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 11
  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                 return;
2404
2405         /* Single TC mode enable XPS */
2406         if (vsi->tc_config.numtc <= 1) {
2407                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2408                         netif_set_xps_queue(ring->netdev,
2409                                             &ring->q_vector->affinity_mask,
2410                                             ring->queue_index);
2411         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2412                 /* Disable XPS to allow selection based on TC */
2413                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2414                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2415                 free_cpumask_var(mask);
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                 kfree(pf->irq_pile);
3835                 pf->irq_pile = NULL;
3836         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3837                 pci_disable_msi(pf->pdev);
3838         }
3839         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3840 }
3841
3842 /**
3843  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3844  * @pf: board private structure
3845  *
3846  * We go through and clear interrupt specific resources and reset the structure
3847  * to pre-load conditions
3848  **/
3849 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3850 {
3851         int i;
3852
3853         i40e_stop_misc_vector(pf);
3854         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3855                 synchronize_irq(pf->msix_entries[0].vector);
3856                 free_irq(pf->msix_entries[0].vector, pf);
3857         }
3858
3859         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3860         for (i = 0; i < pf->num_alloc_vsi; i++)
3861                 if (pf->vsi[i])
3862                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3863         i40e_reset_interrupt_capability(pf);
3864 }
3865
3866 /**
3867  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3868  * @vsi: the VSI being configured
3869  **/
3870 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3871 {
3872         int q_idx;
3873
3874         if (!vsi->netdev)
3875                 return;
3876
3877         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3878                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3879 }
3880
3881 /**
3882  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3883  * @vsi: the VSI being configured
3884  **/
3885 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3886 {
3887         int q_idx;
3888
3889         if (!vsi->netdev)
3890                 return;
3891
3892         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3893                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3894 }
3895
3896 /**
3897  * i40e_vsi_close - Shut down a VSI
3898  * @vsi: the vsi to be quelled
3899  **/
3900 static void i40e_vsi_close(struct i40e_vsi *vsi)
3901 {
3902         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3903                 i40e_down(vsi);
3904         i40e_vsi_free_irq(vsi);
3905         i40e_vsi_free_tx_resources(vsi);
3906         i40e_vsi_free_rx_resources(vsi);
3907 }
3908
3909 /**
3910  * i40e_quiesce_vsi - Pause a given VSI
3911  * @vsi: the VSI being paused
3912  **/
3913 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3914 {
3915         if (test_bit(__I40E_DOWN, &vsi->state))
3916                 return;
3917
3918         /* No need to disable FCoE VSI when Tx suspended */
3919         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
3920             vsi->type == I40E_VSI_FCOE) {
3921                 dev_dbg(&vsi->back->pdev->dev,
3922                         "%s: VSI seid %d skipping FCoE VSI disable\n",
3923                          __func__, vsi->seid);
3924                 return;
3925         }
3926
3927         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3928         if (vsi->netdev && netif_running(vsi->netdev)) {
3929                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3930         } else {
3931                 i40e_vsi_close(vsi);
3932         }
3933 }
3934
3935 /**
3936  * i40e_unquiesce_vsi - Resume a given VSI
3937  * @vsi: the VSI being resumed
3938  **/
3939 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3940 {
3941         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3942                 return;
3943
3944         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3945         if (vsi->netdev && netif_running(vsi->netdev))
3946                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3947         else
3948                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
3949 }
3950
3951 /**
3952  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3953  * @pf: the PF
3954  **/
3955 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3956 {
3957         int v;
3958
3959         for (v = 0; v < pf->num_alloc_vsi; v++) {
3960                 if (pf->vsi[v])
3961                         i40e_quiesce_vsi(pf->vsi[v]);
3962         }
3963 }
3964
3965 /**
3966  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3967  * @pf: the PF
3968  **/
3969 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3970 {
3971         int v;
3972
3973         for (v = 0; v < pf->num_alloc_vsi; v++) {
3974                 if (pf->vsi[v])
3975                         i40e_unquiesce_vsi(pf->vsi[v]);
3976         }
3977 }
3978
3979 #ifdef CONFIG_I40E_DCB
3980 /**
3981  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
3982  * @vsi: the VSI being configured
3983  *
3984  * This function waits for the given VSI's Tx queues to be disabled.
3985  **/
3986 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
3987 {
3988         struct i40e_pf *pf = vsi->back;
3989         int i, pf_q, ret;
3990
3991         pf_q = vsi->base_queue;
3992         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3993                 /* Check and wait for the disable status of the queue */
3994                 ret = i40e_pf_txq_wait(pf, pf_q, false);
3995                 if (ret) {
3996                         dev_info(&pf->pdev->dev,
3997                                  "%s: VSI seid %d Tx ring %d disable timeout\n",
3998                                  __func__, vsi->seid, pf_q);
3999                         return ret;
4000                 }
4001         }
4002
4003         return 0;
4004 }
4005
4006 /**
4007  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4008  * @pf: the PF
4009  *
4010  * This function waits for the Tx queues to be in disabled state for all the
4011  * VSIs that are managed by this PF.
4012  **/
4013 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4014 {
4015         int v, ret = 0;
4016
4017         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4018                 /* No need to wait for FCoE VSI queues */
4019                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4020                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4021                         if (ret)
4022                                 break;
4023                 }
4024         }
4025
4026         return ret;
4027 }
4028
4029 #endif
4030 /**
4031  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4032  * @pf: pointer to pf
4033  *
4034  * Get TC map for ISCSI PF type that will include iSCSI TC
4035  * and LAN TC.
4036  **/
4037 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4038 {
4039         struct i40e_dcb_app_priority_table app;
4040         struct i40e_hw *hw = &pf->hw;
4041         u8 enabled_tc = 1; /* TC0 is always enabled */
4042         u8 tc, i;
4043         /* Get the iSCSI APP TLV */
4044         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4045
4046         for (i = 0; i < dcbcfg->numapps; i++) {
4047                 app = dcbcfg->app[i];
4048                 if (app.selector == I40E_APP_SEL_TCPIP &&
4049                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4050                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4051                         enabled_tc |= (1 << tc);
4052                         break;
4053                 }
4054         }
4055
4056         return enabled_tc;
4057 }
4058
4059 /**
4060  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4061  * @dcbcfg: the corresponding DCBx configuration structure
4062  *
4063  * Return the number of TCs from given DCBx configuration
4064  **/
4065 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4066 {
4067         u8 num_tc = 0;
4068         int i;
4069
4070         /* Scan the ETS Config Priority Table to find
4071          * traffic class enabled for a given priority
4072          * and use the traffic class index to get the
4073          * number of traffic classes enabled
4074          */
4075         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4076                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4077                         num_tc = dcbcfg->etscfg.prioritytable[i];
4078         }
4079
4080         /* Traffic class index starts from zero so
4081          * increment to return the actual count
4082          */
4083         return num_tc + 1;
4084 }
4085
4086 /**
4087  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4088  * @dcbcfg: the corresponding DCBx configuration structure
4089  *
4090  * Query the current DCB configuration and return the number of
4091  * traffic classes enabled from the given DCBX config
4092  **/
4093 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4094 {
4095         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4096         u8 enabled_tc = 1;
4097         u8 i;
4098
4099         for (i = 0; i < num_tc; i++)
4100                 enabled_tc |= 1 << i;
4101
4102         return enabled_tc;
4103 }
4104
4105 /**
4106  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4107  * @pf: PF being queried
4108  *
4109  * Return number of traffic classes enabled for the given PF
4110  **/
4111 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4112 {
4113         struct i40e_hw *hw = &pf->hw;
4114         u8 i, enabled_tc;
4115         u8 num_tc = 0;
4116         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4117
4118         /* If DCB is not enabled then always in single TC */
4119         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4120                 return 1;
4121
4122         /* SFP mode will be enabled for all TCs on port */
4123         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4124                 return i40e_dcb_get_num_tc(dcbcfg);
4125
4126         /* MFP mode return count of enabled TCs for this PF */
4127         if (pf->hw.func_caps.iscsi)
4128                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4129         else
4130                 return 1; /* Only TC0 */
4131
4132         /* At least have TC0 */
4133         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4134         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4135                 if (enabled_tc & (1 << i))
4136                         num_tc++;
4137         }
4138         return num_tc;
4139 }
4140
4141 /**
4142  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4143  * @pf: PF being queried
4144  *
4145  * Return a bitmap for first enabled traffic class for this PF.
4146  **/
4147 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4148 {
4149         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4150         u8 i = 0;
4151
4152         if (!enabled_tc)
4153                 return 0x1; /* TC0 */
4154
4155         /* Find the first enabled TC */
4156         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4157                 if (enabled_tc & (1 << i))
4158                         break;
4159         }
4160
4161         return 1 << i;
4162 }
4163
4164 /**
4165  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4166  * @pf: PF being queried
4167  *
4168  * Return a bitmap for enabled traffic classes for this PF.
4169  **/
4170 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4171 {
4172         /* If DCB is not enabled for this PF then just return default TC */
4173         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4174                 return i40e_pf_get_default_tc(pf);
4175
4176         /* SFP mode we want PF to be enabled for all TCs */
4177         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4178                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4179
4180         /* MFP enabled and iSCSI PF type */
4181         if (pf->hw.func_caps.iscsi)
4182                 return i40e_get_iscsi_tc_map(pf);
4183         else
4184                 return i40e_pf_get_default_tc(pf);
4185 }
4186
4187 /**
4188  * i40e_vsi_get_bw_info - Query VSI BW Information
4189  * @vsi: the VSI being queried
4190  *
4191  * Returns 0 on success, negative value on failure
4192  **/
4193 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4194 {
4195         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4196         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4197         struct i40e_pf *pf = vsi->back;
4198         struct i40e_hw *hw = &pf->hw;
4199         i40e_status aq_ret;
4200         u32 tc_bw_max;
4201         int i;
4202
4203         /* Get the VSI level BW configuration */
4204         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4205         if (aq_ret) {
4206                 dev_info(&pf->pdev->dev,
4207                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
4208                          aq_ret, pf->hw.aq.asq_last_status);
4209                 return -EINVAL;
4210         }
4211
4212         /* Get the VSI level BW configuration per TC */
4213         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4214                                                   NULL);
4215         if (aq_ret) {
4216                 dev_info(&pf->pdev->dev,
4217                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
4218                          aq_ret, pf->hw.aq.asq_last_status);
4219                 return -EINVAL;
4220         }
4221
4222         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4223                 dev_info(&pf->pdev->dev,
4224                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4225                          bw_config.tc_valid_bits,
4226                          bw_ets_config.tc_valid_bits);
4227                 /* Still continuing */
4228         }
4229
4230         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4231         vsi->bw_max_quanta = bw_config.max_bw;
4232         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4233                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4234         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4235                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4236                 vsi->bw_ets_limit_credits[i] =
4237                                         le16_to_cpu(bw_ets_config.credits[i]);
4238                 /* 3 bits out of 4 for each TC */
4239                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4240         }
4241
4242         return 0;
4243 }
4244
4245 /**
4246  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4247  * @vsi: the VSI being configured
4248  * @enabled_tc: TC bitmap
4249  * @bw_credits: BW shared credits per TC
4250  *
4251  * Returns 0 on success, negative value on failure
4252  **/
4253 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4254                                        u8 *bw_share)
4255 {
4256         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4257         i40e_status aq_ret;
4258         int i;
4259
4260         bw_data.tc_valid_bits = enabled_tc;
4261         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4262                 bw_data.tc_bw_credits[i] = bw_share[i];
4263
4264         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4265                                           NULL);
4266         if (aq_ret) {
4267                 dev_info(&vsi->back->pdev->dev,
4268                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4269                          vsi->back->hw.aq.asq_last_status);
4270                 return -EINVAL;
4271         }
4272
4273         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4274                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4275
4276         return 0;
4277 }
4278
4279 /**
4280  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4281  * @vsi: the VSI being configured
4282  * @enabled_tc: TC map to be enabled
4283  *
4284  **/
4285 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4286 {
4287         struct net_device *netdev = vsi->netdev;
4288         struct i40e_pf *pf = vsi->back;
4289         struct i40e_hw *hw = &pf->hw;
4290         u8 netdev_tc = 0;
4291         int i;
4292         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4293
4294         if (!netdev)
4295                 return;
4296
4297         if (!enabled_tc) {
4298                 netdev_reset_tc(netdev);
4299                 return;
4300         }
4301
4302         /* Set up actual enabled TCs on the VSI */
4303         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4304                 return;
4305
4306         /* set per TC queues for the VSI */
4307         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4308                 /* Only set TC queues for enabled tcs
4309                  *
4310                  * e.g. For a VSI that has TC0 and TC3 enabled the
4311                  * enabled_tc bitmap would be 0x00001001; the driver
4312                  * will set the numtc for netdev as 2 that will be
4313                  * referenced by the netdev layer as TC 0 and 1.
4314                  */
4315                 if (vsi->tc_config.enabled_tc & (1 << i))
4316                         netdev_set_tc_queue(netdev,
4317                                         vsi->tc_config.tc_info[i].netdev_tc,
4318                                         vsi->tc_config.tc_info[i].qcount,
4319                                         vsi->tc_config.tc_info[i].qoffset);
4320         }
4321
4322         /* Assign UP2TC map for the VSI */
4323         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4324                 /* Get the actual TC# for the UP */
4325                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4326                 /* Get the mapped netdev TC# for the UP */
4327                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4328                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4329         }
4330 }
4331
4332 /**
4333  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4334  * @vsi: the VSI being configured
4335  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4336  **/
4337 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4338                                       struct i40e_vsi_context *ctxt)
4339 {
4340         /* copy just the sections touched not the entire info
4341          * since not all sections are valid as returned by
4342          * update vsi params
4343          */
4344         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4345         memcpy(&vsi->info.queue_mapping,
4346                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4347         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4348                sizeof(vsi->info.tc_mapping));
4349 }
4350
4351 /**
4352  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4353  * @vsi: VSI to be configured
4354  * @enabled_tc: TC bitmap
4355  *
4356  * This configures a particular VSI for TCs that are mapped to the
4357  * given TC bitmap. It uses default bandwidth share for TCs across
4358  * VSIs to configure TC for a particular VSI.
4359  *
4360  * NOTE:
4361  * It is expected that the VSI queues have been quisced before calling
4362  * this function.
4363  **/
4364 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4365 {
4366         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4367         struct i40e_vsi_context ctxt;
4368         int ret = 0;
4369         int i;
4370
4371         /* Check if enabled_tc is same as existing or new TCs */
4372         if (vsi->tc_config.enabled_tc == enabled_tc)
4373                 return ret;
4374
4375         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4376         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4377                 if (enabled_tc & (1 << i))
4378                         bw_share[i] = 1;
4379         }
4380
4381         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4382         if (ret) {
4383                 dev_info(&vsi->back->pdev->dev,
4384                          "Failed configuring TC map %d for VSI %d\n",
4385                          enabled_tc, vsi->seid);
4386                 goto out;
4387         }
4388
4389         /* Update Queue Pairs Mapping for currently enabled UPs */
4390         ctxt.seid = vsi->seid;
4391         ctxt.pf_num = vsi->back->hw.pf_id;
4392         ctxt.vf_num = 0;
4393         ctxt.uplink_seid = vsi->uplink_seid;
4394         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
4395         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4396
4397         /* Update the VSI after updating the VSI queue-mapping information */
4398         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4399         if (ret) {
4400                 dev_info(&vsi->back->pdev->dev,
4401                          "update vsi failed, aq_err=%d\n",
4402                          vsi->back->hw.aq.asq_last_status);
4403                 goto out;
4404         }
4405         /* update the local VSI info with updated queue map */
4406         i40e_vsi_update_queue_map(vsi, &ctxt);
4407         vsi->info.valid_sections = 0;
4408
4409         /* Update current VSI BW information */
4410         ret = i40e_vsi_get_bw_info(vsi);
4411         if (ret) {
4412                 dev_info(&vsi->back->pdev->dev,
4413                          "Failed updating vsi bw info, aq_err=%d\n",
4414                          vsi->back->hw.aq.asq_last_status);
4415                 goto out;
4416         }
4417
4418         /* Update the netdev TC setup */
4419         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4420 out:
4421         return ret;
4422 }
4423
4424 /**
4425  * i40e_veb_config_tc - Configure TCs for given VEB
4426  * @veb: given VEB
4427  * @enabled_tc: TC bitmap
4428  *
4429  * Configures given TC bitmap for VEB (switching) element
4430  **/
4431 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4432 {
4433         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4434         struct i40e_pf *pf = veb->pf;
4435         int ret = 0;
4436         int i;
4437
4438         /* No TCs or already enabled TCs just return */
4439         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4440                 return ret;
4441
4442         bw_data.tc_valid_bits = enabled_tc;
4443         /* bw_data.absolute_credits is not set (relative) */
4444
4445         /* Enable ETS TCs with equal BW Share for now */
4446         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4447                 if (enabled_tc & (1 << i))
4448                         bw_data.tc_bw_share_credits[i] = 1;
4449         }
4450
4451         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4452                                                    &bw_data, NULL);
4453         if (ret) {
4454                 dev_info(&pf->pdev->dev,
4455                          "veb bw config failed, aq_err=%d\n",
4456                          pf->hw.aq.asq_last_status);
4457                 goto out;
4458         }
4459
4460         /* Update the BW information */
4461         ret = i40e_veb_get_bw_info(veb);
4462         if (ret) {
4463                 dev_info(&pf->pdev->dev,
4464                          "Failed getting veb bw config, aq_err=%d\n",
4465                          pf->hw.aq.asq_last_status);
4466         }
4467
4468 out:
4469         return ret;
4470 }
4471
4472 #ifdef CONFIG_I40E_DCB
4473 /**
4474  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4475  * @pf: PF struct
4476  *
4477  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4478  * the caller would've quiesce all the VSIs before calling
4479  * this function
4480  **/
4481 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4482 {
4483         u8 tc_map = 0;
4484         int ret;
4485         u8 v;
4486
4487         /* Enable the TCs available on PF to all VEBs */
4488         tc_map = i40e_pf_get_tc_map(pf);
4489         for (v = 0; v < I40E_MAX_VEB; v++) {
4490                 if (!pf->veb[v])
4491                         continue;
4492                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4493                 if (ret) {
4494                         dev_info(&pf->pdev->dev,
4495                                  "Failed configuring TC for VEB seid=%d\n",
4496                                  pf->veb[v]->seid);
4497                         /* Will try to configure as many components */
4498                 }
4499         }
4500
4501         /* Update each VSI */
4502         for (v = 0; v < pf->num_alloc_vsi; v++) {
4503                 if (!pf->vsi[v])
4504                         continue;
4505
4506                 /* - Enable all TCs for the LAN VSI
4507 #ifdef I40E_FCOE
4508                  * - For FCoE VSI only enable the TC configured
4509                  *   as per the APP TLV
4510 #endif
4511                  * - For all others keep them at TC0 for now
4512                  */
4513                 if (v == pf->lan_vsi)
4514                         tc_map = i40e_pf_get_tc_map(pf);
4515                 else
4516                         tc_map = i40e_pf_get_default_tc(pf);
4517 #ifdef I40E_FCOE
4518                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4519                         tc_map = i40e_get_fcoe_tc_map(pf);
4520 #endif /* #ifdef I40E_FCOE */
4521
4522                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4523                 if (ret) {
4524                         dev_info(&pf->pdev->dev,
4525                                  "Failed configuring TC for VSI seid=%d\n",
4526                                  pf->vsi[v]->seid);
4527                         /* Will try to configure as many components */
4528                 } else {
4529                         /* Re-configure VSI vectors based on updated TC map */
4530                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4531                         if (pf->vsi[v]->netdev)
4532                                 i40e_dcbnl_set_all(pf->vsi[v]);
4533                 }
4534         }
4535 }
4536
4537 /**
4538  * i40e_resume_port_tx - Resume port Tx
4539  * @pf: PF struct
4540  *
4541  * Resume a port's Tx and issue a PF reset in case of failure to
4542  * resume.
4543  **/
4544 static int i40e_resume_port_tx(struct i40e_pf *pf)
4545 {
4546         struct i40e_hw *hw = &pf->hw;
4547         int ret;
4548
4549         ret = i40e_aq_resume_port_tx(hw, NULL);
4550         if (ret) {
4551                 dev_info(&pf->pdev->dev,
4552                          "AQ command Resume Port Tx failed = %d\n",
4553                           pf->hw.aq.asq_last_status);
4554                 /* Schedule PF reset to recover */
4555                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4556                 i40e_service_event_schedule(pf);
4557         }
4558
4559         return ret;
4560 }
4561
4562 /**
4563  * i40e_init_pf_dcb - Initialize DCB configuration
4564  * @pf: PF being configured
4565  *
4566  * Query the current DCB configuration and cache it
4567  * in the hardware structure
4568  **/
4569 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4570 {
4571         struct i40e_hw *hw = &pf->hw;
4572         int err = 0;
4573
4574         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4575         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4576             (pf->hw.aq.fw_maj_ver < 4))
4577                 goto out;
4578
4579         /* Get the initial DCB configuration */
4580         err = i40e_init_dcb(hw);
4581         if (!err) {
4582                 /* Device/Function is not DCBX capable */
4583                 if ((!hw->func_caps.dcb) ||
4584                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4585                         dev_info(&pf->pdev->dev,
4586                                  "DCBX offload is not supported or is disabled for this PF.\n");
4587
4588                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4589                                 goto out;
4590
4591                 } else {
4592                         /* When status is not DISABLED then DCBX in FW */
4593                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4594                                        DCB_CAP_DCBX_VER_IEEE;
4595
4596                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4597                         /* Enable DCB tagging only when more than one TC */
4598                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4599                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4600                         dev_dbg(&pf->pdev->dev,
4601                                 "DCBX offload is supported for this PF.\n");
4602                 }
4603         } else {
4604                 dev_info(&pf->pdev->dev,
4605                          "AQ Querying DCB configuration failed: aq_err %d\n",
4606                          pf->hw.aq.asq_last_status);
4607         }
4608
4609 out:
4610         return err;
4611 }
4612 #endif /* CONFIG_I40E_DCB */
4613 #define SPEED_SIZE 14
4614 #define FC_SIZE 8
4615 /**
4616  * i40e_print_link_message - print link up or down
4617  * @vsi: the VSI for which link needs a message
4618  */
4619 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4620 {
4621         char speed[SPEED_SIZE] = "Unknown";
4622         char fc[FC_SIZE] = "RX/TX";
4623
4624         if (!isup) {
4625                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4626                 return;
4627         }
4628
4629         /* Warn user if link speed on NPAR enabled partition is not at
4630          * least 10GB
4631          */
4632         if (vsi->back->hw.func_caps.npar_enable &&
4633             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4634              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4635                 netdev_warn(vsi->netdev,
4636                             "The partition detected link speed that is less than 10Gbps\n");
4637
4638         switch (vsi->back->hw.phy.link_info.link_speed) {
4639         case I40E_LINK_SPEED_40GB:
4640                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4641                 break;
4642         case I40E_LINK_SPEED_10GB:
4643                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4644                 break;
4645         case I40E_LINK_SPEED_1GB:
4646                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4647                 break;
4648         case I40E_LINK_SPEED_100MB:
4649                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4650                 break;
4651         default:
4652                 break;
4653         }
4654
4655         switch (vsi->back->hw.fc.current_mode) {
4656         case I40E_FC_FULL:
4657                 strlcpy(fc, "RX/TX", FC_SIZE);
4658                 break;
4659         case I40E_FC_TX_PAUSE:
4660                 strlcpy(fc, "TX", FC_SIZE);
4661                 break;
4662         case I40E_FC_RX_PAUSE:
4663                 strlcpy(fc, "RX", FC_SIZE);
4664                 break;
4665         default:
4666                 strlcpy(fc, "None", FC_SIZE);
4667                 break;
4668         }
4669
4670         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4671                     speed, fc);
4672 }
4673
4674 /**
4675  * i40e_up_complete - Finish the last steps of bringing up a connection
4676  * @vsi: the VSI being configured
4677  **/
4678 static int i40e_up_complete(struct i40e_vsi *vsi)
4679 {
4680         struct i40e_pf *pf = vsi->back;
4681         int err;
4682
4683         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4684                 i40e_vsi_configure_msix(vsi);
4685         else
4686                 i40e_configure_msi_and_legacy(vsi);
4687
4688         /* start rings */
4689         err = i40e_vsi_control_rings(vsi, true);
4690         if (err)
4691                 return err;
4692
4693         clear_bit(__I40E_DOWN, &vsi->state);
4694         i40e_napi_enable_all(vsi);
4695         i40e_vsi_enable_irq(vsi);
4696
4697         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4698             (vsi->netdev)) {
4699                 i40e_print_link_message(vsi, true);
4700                 netif_tx_start_all_queues(vsi->netdev);
4701                 netif_carrier_on(vsi->netdev);
4702         } else if (vsi->netdev) {
4703                 i40e_print_link_message(vsi, false);
4704                 /* need to check for qualified module here*/
4705                 if ((pf->hw.phy.link_info.link_info &
4706                         I40E_AQ_MEDIA_AVAILABLE) &&
4707                     (!(pf->hw.phy.link_info.an_info &
4708                         I40E_AQ_QUALIFIED_MODULE)))
4709                         netdev_err(vsi->netdev,
4710                                    "the driver failed to link because an unqualified module was detected.");
4711         }
4712
4713         /* replay FDIR SB filters */
4714         if (vsi->type == I40E_VSI_FDIR) {
4715                 /* reset fd counters */
4716                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4717                 if (pf->fd_tcp_rule > 0) {
4718                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4719                         dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4720                         pf->fd_tcp_rule = 0;
4721                 }
4722                 i40e_fdir_filter_restore(vsi);
4723         }
4724         i40e_service_event_schedule(pf);
4725
4726         return 0;
4727 }
4728
4729 /**
4730  * i40e_vsi_reinit_locked - Reset the VSI
4731  * @vsi: the VSI being configured
4732  *
4733  * Rebuild the ring structs after some configuration
4734  * has changed, e.g. MTU size.
4735  **/
4736 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4737 {
4738         struct i40e_pf *pf = vsi->back;
4739
4740         WARN_ON(in_interrupt());
4741         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4742                 usleep_range(1000, 2000);
4743         i40e_down(vsi);
4744
4745         /* Give a VF some time to respond to the reset.  The
4746          * two second wait is based upon the watchdog cycle in
4747          * the VF driver.
4748          */
4749         if (vsi->type == I40E_VSI_SRIOV)
4750                 msleep(2000);
4751         i40e_up(vsi);
4752         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4753 }
4754
4755 /**
4756  * i40e_up - Bring the connection back up after being down
4757  * @vsi: the VSI being configured
4758  **/
4759 int i40e_up(struct i40e_vsi *vsi)
4760 {
4761         int err;
4762
4763         err = i40e_vsi_configure(vsi);
4764         if (!err)
4765                 err = i40e_up_complete(vsi);
4766
4767         return err;
4768 }
4769
4770 /**
4771  * i40e_down - Shutdown the connection processing
4772  * @vsi: the VSI being stopped
4773  **/
4774 void i40e_down(struct i40e_vsi *vsi)
4775 {
4776         int i;
4777
4778         /* It is assumed that the caller of this function
4779          * sets the vsi->state __I40E_DOWN bit.
4780          */
4781         if (vsi->netdev) {
4782                 netif_carrier_off(vsi->netdev);
4783                 netif_tx_disable(vsi->netdev);
4784         }
4785         i40e_vsi_disable_irq(vsi);
4786         i40e_vsi_control_rings(vsi, false);
4787         i40e_napi_disable_all(vsi);
4788
4789         for (i = 0; i < vsi->num_queue_pairs; i++) {
4790                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4791                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4792         }
4793 }
4794
4795 /**
4796  * i40e_setup_tc - configure multiple traffic classes
4797  * @netdev: net device to configure
4798  * @tc: number of traffic classes to enable
4799  **/
4800 #ifdef I40E_FCOE
4801 int i40e_setup_tc(struct net_device *netdev, u8 tc)
4802 #else
4803 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4804 #endif
4805 {
4806         struct i40e_netdev_priv *np = netdev_priv(netdev);
4807         struct i40e_vsi *vsi = np->vsi;
4808         struct i40e_pf *pf = vsi->back;
4809         u8 enabled_tc = 0;
4810         int ret = -EINVAL;
4811         int i;
4812
4813         /* Check if DCB enabled to continue */
4814         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4815                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4816                 goto exit;
4817         }
4818
4819         /* Check if MFP enabled */
4820         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4821                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4822                 goto exit;
4823         }
4824
4825         /* Check whether tc count is within enabled limit */
4826         if (tc > i40e_pf_get_num_tc(pf)) {
4827                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4828                 goto exit;
4829         }
4830
4831         /* Generate TC map for number of tc requested */
4832         for (i = 0; i < tc; i++)
4833                 enabled_tc |= (1 << i);
4834
4835         /* Requesting same TC configuration as already enabled */
4836         if (enabled_tc == vsi->tc_config.enabled_tc)
4837                 return 0;
4838
4839         /* Quiesce VSI queues */
4840         i40e_quiesce_vsi(vsi);
4841
4842         /* Configure VSI for enabled TCs */
4843         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4844         if (ret) {
4845                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4846                             vsi->seid);
4847                 goto exit;
4848         }
4849
4850         /* Unquiesce VSI */
4851         i40e_unquiesce_vsi(vsi);
4852
4853 exit:
4854         return ret;
4855 }
4856
4857 /**
4858  * i40e_open - Called when a network interface is made active
4859  * @netdev: network interface device structure
4860  *
4861  * The open entry point is called when a network interface is made
4862  * active by the system (IFF_UP).  At this point all resources needed
4863  * for transmit and receive operations are allocated, the interrupt
4864  * handler is registered with the OS, the netdev watchdog subtask is
4865  * enabled, and the stack is notified that the interface is ready.
4866  *
4867  * Returns 0 on success, negative value on failure
4868  **/
4869 int i40e_open(struct net_device *netdev)
4870 {
4871         struct i40e_netdev_priv *np = netdev_priv(netdev);
4872         struct i40e_vsi *vsi = np->vsi;
4873         struct i40e_pf *pf = vsi->back;
4874         int err;
4875
4876         /* disallow open during test or if eeprom is broken */
4877         if (test_bit(__I40E_TESTING, &pf->state) ||
4878             test_bit(__I40E_BAD_EEPROM, &pf->state))
4879                 return -EBUSY;
4880
4881         netif_carrier_off(netdev);
4882
4883         err = i40e_vsi_open(vsi);
4884         if (err)
4885                 return err;
4886
4887         /* configure global TSO hardware offload settings */
4888         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4889                                                        TCP_FLAG_FIN) >> 16);
4890         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4891                                                        TCP_FLAG_FIN |
4892                                                        TCP_FLAG_CWR) >> 16);
4893         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4894
4895 #ifdef CONFIG_I40E_VXLAN
4896         vxlan_get_rx_port(netdev);
4897 #endif
4898
4899         return 0;
4900 }
4901
4902 /**
4903  * i40e_vsi_open -
4904  * @vsi: the VSI to open
4905  *
4906  * Finish initialization of the VSI.
4907  *
4908  * Returns 0 on success, negative value on failure
4909  **/
4910 int i40e_vsi_open(struct i40e_vsi *vsi)
4911 {
4912         struct i40e_pf *pf = vsi->back;
4913         char int_name[I40E_INT_NAME_STR_LEN];
4914         int err;
4915
4916         /* allocate descriptors */
4917         err = i40e_vsi_setup_tx_resources(vsi);
4918         if (err)
4919                 goto err_setup_tx;
4920         err = i40e_vsi_setup_rx_resources(vsi);
4921         if (err)
4922                 goto err_setup_rx;
4923
4924         err = i40e_vsi_configure(vsi);
4925         if (err)
4926                 goto err_setup_rx;
4927
4928         if (vsi->netdev) {
4929                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4930                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4931                 err = i40e_vsi_request_irq(vsi, int_name);
4932                 if (err)
4933                         goto err_setup_rx;
4934
4935                 /* Notify the stack of the actual queue counts. */
4936                 err = netif_set_real_num_tx_queues(vsi->netdev,
4937                                                    vsi->num_queue_pairs);
4938                 if (err)
4939                         goto err_set_queues;
4940
4941                 err = netif_set_real_num_rx_queues(vsi->netdev,
4942                                                    vsi->num_queue_pairs);
4943                 if (err)
4944                         goto err_set_queues;
4945
4946         } else if (vsi->type == I40E_VSI_FDIR) {
4947                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
4948                          dev_driver_string(&pf->pdev->dev),
4949                          dev_name(&pf->pdev->dev));
4950                 err = i40e_vsi_request_irq(vsi, int_name);
4951
4952         } else {
4953                 err = -EINVAL;
4954                 goto err_setup_rx;
4955         }
4956
4957         err = i40e_up_complete(vsi);
4958         if (err)
4959                 goto err_up_complete;
4960
4961         return 0;
4962
4963 err_up_complete:
4964         i40e_down(vsi);
4965 err_set_queues:
4966         i40e_vsi_free_irq(vsi);
4967 err_setup_rx:
4968         i40e_vsi_free_rx_resources(vsi);
4969 err_setup_tx:
4970         i40e_vsi_free_tx_resources(vsi);
4971         if (vsi == pf->vsi[pf->lan_vsi])
4972                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4973
4974         return err;
4975 }
4976
4977 /**
4978  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4979  * @pf: Pointer to pf
4980  *
4981  * This function destroys the hlist where all the Flow Director
4982  * filters were saved.
4983  **/
4984 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4985 {
4986         struct i40e_fdir_filter *filter;
4987         struct hlist_node *node2;
4988
4989         hlist_for_each_entry_safe(filter, node2,
4990                                   &pf->fdir_filter_list, fdir_node) {
4991                 hlist_del(&filter->fdir_node);
4992                 kfree(filter);
4993         }
4994         pf->fdir_pf_active_filters = 0;
4995 }
4996
4997 /**
4998  * i40e_close - Disables a network interface
4999  * @netdev: network interface device structure
5000  *
5001  * The close entry point is called when an interface is de-activated
5002  * by the OS.  The hardware is still under the driver's control, but
5003  * this netdev interface is disabled.
5004  *
5005  * Returns 0, this is not allowed to fail
5006  **/
5007 #ifdef I40E_FCOE
5008 int i40e_close(struct net_device *netdev)
5009 #else
5010 static int i40e_close(struct net_device *netdev)
5011 #endif
5012 {
5013         struct i40e_netdev_priv *np = netdev_priv(netdev);
5014         struct i40e_vsi *vsi = np->vsi;
5015
5016         i40e_vsi_close(vsi);
5017
5018         return 0;
5019 }
5020
5021 /**
5022  * i40e_do_reset - Start a PF or Core Reset sequence
5023  * @pf: board private structure
5024  * @reset_flags: which reset is requested
5025  *
5026  * The essential difference in resets is that the PF Reset
5027  * doesn't clear the packet buffers, doesn't reset the PE
5028  * firmware, and doesn't bother the other PFs on the chip.
5029  **/
5030 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5031 {
5032         u32 val;
5033
5034         WARN_ON(in_interrupt());
5035
5036         if (i40e_check_asq_alive(&pf->hw))
5037                 i40e_vc_notify_reset(pf);
5038
5039         /* do the biggest reset indicated */
5040         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
5041
5042                 /* Request a Global Reset
5043                  *
5044                  * This will start the chip's countdown to the actual full
5045                  * chip reset event, and a warning interrupt to be sent
5046                  * to all PFs, including the requestor.  Our handler
5047                  * for the warning interrupt will deal with the shutdown
5048                  * and recovery of the switch setup.
5049                  */
5050                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5051                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5052                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5053                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5054
5055         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
5056
5057                 /* Request a Core Reset
5058                  *
5059                  * Same as Global Reset, except does *not* include the MAC/PHY
5060                  */
5061                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5062                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5063                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5064                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5065                 i40e_flush(&pf->hw);
5066
5067         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
5068
5069                 /* Request a PF Reset
5070                  *
5071                  * Resets only the PF-specific registers
5072                  *
5073                  * This goes directly to the tear-down and rebuild of
5074                  * the switch, since we need to do all the recovery as
5075                  * for the Core Reset.
5076                  */
5077                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5078                 i40e_handle_reset_warning(pf);
5079
5080         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
5081                 int v;
5082
5083                 /* Find the VSI(s) that requested a re-init */
5084                 dev_info(&pf->pdev->dev,
5085                          "VSI reinit requested\n");
5086                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5087                         struct i40e_vsi *vsi = pf->vsi[v];
5088                         if (vsi != NULL &&
5089                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5090                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5091                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5092                         }
5093                 }
5094
5095                 /* no further action needed, so return now */
5096                 return;
5097         } else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
5098                 int v;
5099
5100                 /* Find the VSI(s) that needs to be brought down */
5101                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5102                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5103                         struct i40e_vsi *vsi = pf->vsi[v];
5104                         if (vsi != NULL &&
5105                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5106                                 set_bit(__I40E_DOWN, &vsi->state);
5107                                 i40e_down(vsi);
5108                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5109                         }
5110                 }
5111
5112                 /* no further action needed, so return now */
5113                 return;
5114         } else {
5115                 dev_info(&pf->pdev->dev,
5116                          "bad reset request 0x%08x\n", reset_flags);
5117                 return;
5118         }
5119 }
5120
5121 #ifdef CONFIG_I40E_DCB
5122 /**
5123  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5124  * @pf: board private structure
5125  * @old_cfg: current DCB config
5126  * @new_cfg: new DCB config
5127  **/
5128 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5129                             struct i40e_dcbx_config *old_cfg,
5130                             struct i40e_dcbx_config *new_cfg)
5131 {
5132         bool need_reconfig = false;
5133
5134         /* Check if ETS configuration has changed */
5135         if (memcmp(&new_cfg->etscfg,
5136                    &old_cfg->etscfg,
5137                    sizeof(new_cfg->etscfg))) {
5138                 /* If Priority Table has changed reconfig is needed */
5139                 if (memcmp(&new_cfg->etscfg.prioritytable,
5140                            &old_cfg->etscfg.prioritytable,
5141                            sizeof(new_cfg->etscfg.prioritytable))) {
5142                         need_reconfig = true;
5143                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5144                 }
5145
5146                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5147                            &old_cfg->etscfg.tcbwtable,
5148                            sizeof(new_cfg->etscfg.tcbwtable)))
5149                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5150
5151                 if (memcmp(&new_cfg->etscfg.tsatable,
5152                            &old_cfg->etscfg.tsatable,
5153                            sizeof(new_cfg->etscfg.tsatable)))
5154                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5155         }
5156
5157         /* Check if PFC configuration has changed */
5158         if (memcmp(&new_cfg->pfc,
5159                    &old_cfg->pfc,
5160                    sizeof(new_cfg->pfc))) {
5161                 need_reconfig = true;
5162                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5163         }
5164
5165         /* Check if APP Table has changed */
5166         if (memcmp(&new_cfg->app,
5167                    &old_cfg->app,
5168                    sizeof(new_cfg->app))) {
5169                 need_reconfig = true;
5170                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5171         }
5172
5173         dev_dbg(&pf->pdev->dev, "%s: need_reconfig=%d\n", __func__,
5174                 need_reconfig);
5175         return need_reconfig;
5176 }
5177
5178 /**
5179  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5180  * @pf: board private structure
5181  * @e: event info posted on ARQ
5182  **/
5183 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5184                                   struct i40e_arq_event_info *e)
5185 {
5186         struct i40e_aqc_lldp_get_mib *mib =
5187                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5188         struct i40e_hw *hw = &pf->hw;
5189         struct i40e_dcbx_config tmp_dcbx_cfg;
5190         bool need_reconfig = false;
5191         int ret = 0;
5192         u8 type;
5193
5194         /* Not DCB capable or capability disabled */
5195         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5196                 return ret;
5197
5198         /* Ignore if event is not for Nearest Bridge */
5199         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5200                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5201         dev_dbg(&pf->pdev->dev,
5202                 "%s: LLDP event mib bridge type 0x%x\n", __func__, type);
5203         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5204                 return ret;
5205
5206         /* Check MIB Type and return if event for Remote MIB update */
5207         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5208         dev_dbg(&pf->pdev->dev,
5209                 "%s: LLDP event mib type %s\n", __func__,
5210                 type ? "remote" : "local");
5211         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5212                 /* Update the remote cached instance and return */
5213                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5214                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5215                                 &hw->remote_dcbx_config);
5216                 goto exit;
5217         }
5218
5219         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
5220         /* Store the old configuration */
5221         memcpy(&tmp_dcbx_cfg, &hw->local_dcbx_config, sizeof(tmp_dcbx_cfg));
5222
5223         /* Reset the old DCBx configuration data */
5224         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5225         /* Get updated DCBX data from firmware */
5226         ret = i40e_get_dcb_config(&pf->hw);
5227         if (ret) {
5228                 dev_info(&pf->pdev->dev, "Failed querying DCB configuration data from firmware.\n");
5229                 goto exit;
5230         }
5231
5232         /* No change detected in DCBX configs */
5233         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5234                     sizeof(tmp_dcbx_cfg))) {
5235                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5236                 goto exit;
5237         }
5238
5239         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5240                                                &hw->local_dcbx_config);
5241
5242         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5243
5244         if (!need_reconfig)
5245                 goto exit;
5246
5247         /* Enable DCB tagging only when more than one TC */
5248         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5249                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5250         else
5251                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5252
5253         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5254         /* Reconfiguration needed quiesce all VSIs */
5255         i40e_pf_quiesce_all_vsi(pf);
5256
5257         /* Changes in configuration update VEB/VSI */
5258         i40e_dcb_reconfigure(pf);
5259
5260         ret = i40e_resume_port_tx(pf);
5261
5262         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5263         /* In case of error no point in resuming VSIs */
5264         if (ret)
5265                 goto exit;
5266
5267         /* Wait for the PF's Tx queues to be disabled */
5268         ret = i40e_pf_wait_txq_disabled(pf);
5269         if (ret) {
5270                 /* Schedule PF reset to recover */
5271                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5272                 i40e_service_event_schedule(pf);
5273         } else {
5274                 i40e_pf_unquiesce_all_vsi(pf);
5275         }
5276
5277 exit:
5278         return ret;
5279 }
5280 #endif /* CONFIG_I40E_DCB */
5281
5282 /**
5283  * i40e_do_reset_safe - Protected reset path for userland calls.
5284  * @pf: board private structure
5285  * @reset_flags: which reset is requested
5286  *
5287  **/
5288 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5289 {
5290         rtnl_lock();
5291         i40e_do_reset(pf, reset_flags);
5292         rtnl_unlock();
5293 }
5294
5295 /**
5296  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5297  * @pf: board private structure
5298  * @e: event info posted on ARQ
5299  *
5300  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5301  * and VF queues
5302  **/
5303 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5304                                            struct i40e_arq_event_info *e)
5305 {
5306         struct i40e_aqc_lan_overflow *data =
5307                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5308         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5309         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5310         struct i40e_hw *hw = &pf->hw;
5311         struct i40e_vf *vf;
5312         u16 vf_id;
5313
5314         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5315                 queue, qtx_ctl);
5316
5317         /* Queue belongs to VF, find the VF and issue VF reset */
5318         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5319             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5320                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5321                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5322                 vf_id -= hw->func_caps.vf_base_id;
5323                 vf = &pf->vf[vf_id];
5324                 i40e_vc_notify_vf_reset(vf);
5325                 /* Allow VF to process pending reset notification */
5326                 msleep(20);
5327                 i40e_reset_vf(vf, false);
5328         }
5329 }
5330
5331 /**
5332  * i40e_service_event_complete - Finish up the service event
5333  * @pf: board private structure
5334  **/
5335 static void i40e_service_event_complete(struct i40e_pf *pf)
5336 {
5337         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5338
5339         /* flush memory to make sure state is correct before next watchog */
5340         smp_mb__before_atomic();
5341         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5342 }
5343
5344 /**
5345  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5346  * @pf: board private structure
5347  **/
5348 int i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5349 {
5350         int val, fcnt_prog;
5351
5352         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5353         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5354         return fcnt_prog;
5355 }
5356
5357 /**
5358  * i40e_get_current_fd_count - Get the count of total FD filters programmed
5359  * @pf: board private structure
5360  **/
5361 int i40e_get_current_fd_count(struct i40e_pf *pf)
5362 {
5363         int val, fcnt_prog;
5364         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5365         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5366                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5367                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5368         return fcnt_prog;
5369 }
5370
5371 /**
5372  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5373  * @pf: board private structure
5374  **/
5375 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5376 {
5377         u32 fcnt_prog, fcnt_avail;
5378
5379         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5380                 return;
5381
5382         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5383          * to re-enable
5384          */
5385         fcnt_prog = i40e_get_cur_guaranteed_fd_count(pf);
5386         fcnt_avail = pf->fdir_pf_filter_count;
5387         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5388             (pf->fd_add_err == 0) ||
5389             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5390                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5391                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5392                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5393                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5394                 }
5395         }
5396         /* Wait for some more space to be available to turn on ATR */
5397         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5398                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5399                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5400                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5401                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5402                 }
5403         }
5404 }
5405
5406 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5407 /**
5408  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5409  * @pf: board private structure
5410  **/
5411 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5412 {
5413         int flush_wait_retry = 50;
5414         int reg;
5415
5416         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5417                 return;
5418
5419         if (time_after(jiffies, pf->fd_flush_timestamp +
5420                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5421                 set_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5422                 pf->fd_flush_timestamp = jiffies;
5423                 pf->auto_disable_flags |= I40E_FLAG_FD_SB_ENABLED;
5424                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5425                 /* flush all filters */
5426                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5427                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5428                 i40e_flush(&pf->hw);
5429                 pf->fd_flush_cnt++;
5430                 pf->fd_add_err = 0;
5431                 do {
5432                         /* Check FD flush status every 5-6msec */
5433                         usleep_range(5000, 6000);
5434                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5435                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5436                                 break;
5437                 } while (flush_wait_retry--);
5438                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5439                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5440                 } else {
5441                         /* replay sideband filters */
5442                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5443
5444                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5445                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5446                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5447                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5448                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5449                 }
5450         }
5451 }
5452
5453 /**
5454  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5455  * @pf: board private structure
5456  **/
5457 int i40e_get_current_atr_cnt(struct i40e_pf *pf)
5458 {
5459         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5460 }
5461
5462 /* We can see up to 256 filter programming desc in transit if the filters are
5463  * being applied really fast; before we see the first
5464  * filter miss error on Rx queue 0. Accumulating enough error messages before
5465  * reacting will make sure we don't cause flush too often.
5466  */
5467 #define I40E_MAX_FD_PROGRAM_ERROR 256
5468
5469 /**
5470  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5471  * @pf: board private structure
5472  **/
5473 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5474 {
5475
5476         /* if interface is down do nothing */
5477         if (test_bit(__I40E_DOWN, &pf->state))
5478                 return;
5479
5480         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5481                 return;
5482
5483         if ((pf->fd_add_err >= I40E_MAX_FD_PROGRAM_ERROR) &&
5484             (i40e_get_current_atr_cnt(pf) >= pf->fd_atr_cnt) &&
5485             (i40e_get_current_atr_cnt(pf) > pf->fdir_pf_filter_count))
5486                 i40e_fdir_flush_and_replay(pf);
5487
5488         i40e_fdir_check_and_reenable(pf);
5489
5490 }
5491
5492 /**
5493  * i40e_vsi_link_event - notify VSI of a link event
5494  * @vsi: vsi to be notified
5495  * @link_up: link up or down
5496  **/
5497 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5498 {
5499         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5500                 return;
5501
5502         switch (vsi->type) {
5503         case I40E_VSI_MAIN:
5504 #ifdef I40E_FCOE
5505         case I40E_VSI_FCOE:
5506 #endif
5507                 if (!vsi->netdev || !vsi->netdev_registered)
5508                         break;
5509
5510                 if (link_up) {
5511                         netif_carrier_on(vsi->netdev);
5512                         netif_tx_wake_all_queues(vsi->netdev);
5513                 } else {
5514                         netif_carrier_off(vsi->netdev);
5515                         netif_tx_stop_all_queues(vsi->netdev);
5516                 }
5517                 break;
5518
5519         case I40E_VSI_SRIOV:
5520         case I40E_VSI_VMDQ2:
5521         case I40E_VSI_CTRL:
5522         case I40E_VSI_MIRROR:
5523         default:
5524                 /* there is no notification for other VSIs */
5525                 break;
5526         }
5527 }
5528
5529 /**
5530  * i40e_veb_link_event - notify elements on the veb of a link event
5531  * @veb: veb to be notified
5532  * @link_up: link up or down
5533  **/
5534 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5535 {
5536         struct i40e_pf *pf;
5537         int i;
5538
5539         if (!veb || !veb->pf)
5540                 return;
5541         pf = veb->pf;
5542
5543         /* depth first... */
5544         for (i = 0; i < I40E_MAX_VEB; i++)
5545                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5546                         i40e_veb_link_event(pf->veb[i], link_up);
5547
5548         /* ... now the local VSIs */
5549         for (i = 0; i < pf->num_alloc_vsi; i++)
5550                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5551                         i40e_vsi_link_event(pf->vsi[i], link_up);
5552 }
5553
5554 /**
5555  * i40e_link_event - Update netif_carrier status
5556  * @pf: board private structure
5557  **/
5558 static void i40e_link_event(struct i40e_pf *pf)
5559 {
5560         bool new_link, old_link;
5561         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5562         u8 new_link_speed, old_link_speed;
5563
5564         /* set this to force the get_link_status call to refresh state */
5565         pf->hw.phy.get_link_info = true;
5566
5567         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5568         new_link = i40e_get_link_status(&pf->hw);
5569         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5570         new_link_speed = pf->hw.phy.link_info.link_speed;
5571
5572         if (new_link == old_link &&
5573             new_link_speed == old_link_speed &&
5574             (test_bit(__I40E_DOWN, &vsi->state) ||
5575              new_link == netif_carrier_ok(vsi->netdev)))
5576                 return;
5577
5578         if (!test_bit(__I40E_DOWN, &vsi->state))
5579                 i40e_print_link_message(vsi, new_link);
5580
5581         /* Notify the base of the switch tree connected to
5582          * the link.  Floating VEBs are not notified.
5583          */
5584         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5585                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5586         else
5587                 i40e_vsi_link_event(vsi, new_link);
5588
5589         if (pf->vf)
5590                 i40e_vc_notify_link_state(pf);
5591
5592         if (pf->flags & I40E_FLAG_PTP)
5593                 i40e_ptp_set_increment(pf);
5594 }
5595
5596 /**
5597  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5598  * @pf: board private structure
5599  *
5600  * Set the per-queue flags to request a check for stuck queues in the irq
5601  * clean functions, then force interrupts to be sure the irq clean is called.
5602  **/
5603 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5604 {
5605         int i, v;
5606
5607         /* If we're down or resetting, just bail */
5608         if (test_bit(__I40E_DOWN, &pf->state) ||
5609             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5610                 return;
5611
5612         /* for each VSI/netdev
5613          *     for each Tx queue
5614          *         set the check flag
5615          *     for each q_vector
5616          *         force an interrupt
5617          */
5618         for (v = 0; v < pf->num_alloc_vsi; v++) {
5619                 struct i40e_vsi *vsi = pf->vsi[v];
5620                 int armed = 0;
5621
5622                 if (!pf->vsi[v] ||
5623                     test_bit(__I40E_DOWN, &vsi->state) ||
5624                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5625                         continue;
5626
5627                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5628                         set_check_for_tx_hang(vsi->tx_rings[i]);
5629                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5630                                      &vsi->tx_rings[i]->state))
5631                                 armed++;
5632                 }
5633
5634                 if (armed) {
5635                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5636                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5637                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5638                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
5639                                       I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
5640                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
5641                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
5642                         } else {
5643                                 u16 vec = vsi->base_vector - 1;
5644                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5645                                       I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK |
5646                                       I40E_PFINT_DYN_CTLN_ITR_INDX_MASK |
5647                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_ENA_MASK |
5648                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK);
5649                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5650                                         wr32(&vsi->back->hw,
5651                                              I40E_PFINT_DYN_CTLN(vec), val);
5652                         }
5653                         i40e_flush(&vsi->back->hw);
5654                 }
5655         }
5656 }
5657
5658 /**
5659  * i40e_watchdog_subtask - periodic checks not using event driven response
5660  * @pf: board private structure
5661  **/
5662 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5663 {
5664         int i;
5665
5666         /* if interface is down do nothing */
5667         if (test_bit(__I40E_DOWN, &pf->state) ||
5668             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5669                 return;
5670
5671         /* make sure we don't do these things too often */
5672         if (time_before(jiffies, (pf->service_timer_previous +
5673                                   pf->service_timer_period)))
5674                 return;
5675         pf->service_timer_previous = jiffies;
5676
5677         i40e_check_hang_subtask(pf);
5678         i40e_link_event(pf);
5679
5680         /* Update the stats for active netdevs so the network stack
5681          * can look at updated numbers whenever it cares to
5682          */
5683         for (i = 0; i < pf->num_alloc_vsi; i++)
5684                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5685                         i40e_update_stats(pf->vsi[i]);
5686
5687         /* Update the stats for the active switching components */
5688         for (i = 0; i < I40E_MAX_VEB; i++)
5689                 if (pf->veb[i])
5690                         i40e_update_veb_stats(pf->veb[i]);
5691
5692         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5693 }
5694
5695 /**
5696  * i40e_reset_subtask - Set up for resetting the device and driver
5697  * @pf: board private structure
5698  **/
5699 static void i40e_reset_subtask(struct i40e_pf *pf)
5700 {
5701         u32 reset_flags = 0;
5702
5703         rtnl_lock();
5704         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5705                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5706                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5707         }
5708         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5709                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5710                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5711         }
5712         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5713                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5714                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5715         }
5716         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5717                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5718                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5719         }
5720         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5721                 reset_flags |= (1 << __I40E_DOWN_REQUESTED);
5722                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5723         }
5724
5725         /* If there's a recovery already waiting, it takes
5726          * precedence before starting a new reset sequence.
5727          */
5728         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5729                 i40e_handle_reset_warning(pf);
5730                 goto unlock;
5731         }
5732
5733         /* If we're already down or resetting, just bail */
5734         if (reset_flags &&
5735             !test_bit(__I40E_DOWN, &pf->state) &&
5736             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5737                 i40e_do_reset(pf, reset_flags);
5738
5739 unlock:
5740         rtnl_unlock();
5741 }
5742
5743 /**
5744  * i40e_handle_link_event - Handle link event
5745  * @pf: board private structure
5746  * @e: event info posted on ARQ
5747  **/
5748 static void i40e_handle_link_event(struct i40e_pf *pf,
5749                                    struct i40e_arq_event_info *e)
5750 {
5751         struct i40e_hw *hw = &pf->hw;
5752         struct i40e_aqc_get_link_status *status =
5753                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5754         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
5755
5756         /* save off old link status information */
5757         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
5758                sizeof(pf->hw.phy.link_info_old));
5759
5760         /* Do a new status request to re-enable LSE reporting
5761          * and load new status information into the hw struct
5762          * This completely ignores any state information
5763          * in the ARQ event info, instead choosing to always
5764          * issue the AQ update link status command.
5765          */
5766         i40e_link_event(pf);
5767
5768         /* check for unqualified module, if link is down */
5769         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5770             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5771             (!(status->link_info & I40E_AQ_LINK_UP)))
5772                 dev_err(&pf->pdev->dev,
5773                         "The driver failed to link because an unqualified module was detected.\n");
5774 }
5775
5776 /**
5777  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5778  * @pf: board private structure
5779  **/
5780 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5781 {
5782         struct i40e_arq_event_info event;
5783         struct i40e_hw *hw = &pf->hw;
5784         u16 pending, i = 0;
5785         i40e_status ret;
5786         u16 opcode;
5787         u32 oldval;
5788         u32 val;
5789
5790         /* Do not run clean AQ when PF reset fails */
5791         if (test_bit(__I40E_RESET_FAILED, &pf->state))
5792                 return;
5793
5794         /* check for error indications */
5795         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5796         oldval = val;
5797         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5798                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5799                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5800         }
5801         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5802                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5803                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5804         }
5805         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5806                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5807                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5808         }
5809         if (oldval != val)
5810                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5811
5812         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5813         oldval = val;
5814         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5815                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5816                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5817         }
5818         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5819                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5820                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5821         }
5822         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5823                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5824                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5825         }
5826         if (oldval != val)
5827                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5828
5829         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
5830         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
5831         if (!event.msg_buf)
5832                 return;
5833
5834         do {
5835                 ret = i40e_clean_arq_element(hw, &event, &pending);
5836                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
5837                         break;
5838                 else if (ret) {
5839                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5840                         break;
5841                 }
5842
5843                 opcode = le16_to_cpu(event.desc.opcode);
5844                 switch (opcode) {
5845
5846                 case i40e_aqc_opc_get_link_status:
5847                         i40e_handle_link_event(pf, &event);
5848                         break;
5849                 case i40e_aqc_opc_send_msg_to_pf:
5850                         ret = i40e_vc_process_vf_msg(pf,
5851                                         le16_to_cpu(event.desc.retval),
5852                                         le32_to_cpu(event.desc.cookie_high),
5853                                         le32_to_cpu(event.desc.cookie_low),
5854                                         event.msg_buf,
5855                                         event.msg_len);
5856                         break;
5857                 case i40e_aqc_opc_lldp_update_mib:
5858                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5859 #ifdef CONFIG_I40E_DCB
5860                         rtnl_lock();
5861                         ret = i40e_handle_lldp_event(pf, &event);
5862                         rtnl_unlock();
5863 #endif /* CONFIG_I40E_DCB */
5864                         break;
5865                 case i40e_aqc_opc_event_lan_overflow:
5866                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5867                         i40e_handle_lan_overflow_event(pf, &event);
5868                         break;
5869                 case i40e_aqc_opc_send_msg_to_peer:
5870                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5871                         break;
5872                 default:
5873                         dev_info(&pf->pdev->dev,
5874                                  "ARQ Error: Unknown event 0x%04x received\n",
5875                                  opcode);
5876                         break;
5877                 }
5878         } while (pending && (i++ < pf->adminq_work_limit));
5879
5880         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5881         /* re-enable Admin queue interrupt cause */
5882         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5883         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5884         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5885         i40e_flush(hw);
5886
5887         kfree(event.msg_buf);
5888 }
5889
5890 /**
5891  * i40e_verify_eeprom - make sure eeprom is good to use
5892  * @pf: board private structure
5893  **/
5894 static void i40e_verify_eeprom(struct i40e_pf *pf)
5895 {
5896         int err;
5897
5898         err = i40e_diag_eeprom_test(&pf->hw);
5899         if (err) {
5900                 /* retry in case of garbage read */
5901                 err = i40e_diag_eeprom_test(&pf->hw);
5902                 if (err) {
5903                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5904                                  err);
5905                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5906                 }
5907         }
5908
5909         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5910                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5911                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5912         }
5913 }
5914
5915 /**
5916  * i40e_config_bridge_mode - Configure the HW bridge mode
5917  * @veb: pointer to the bridge instance
5918  *
5919  * Configure the loop back mode for the LAN VSI that is downlink to the
5920  * specified HW bridge instance. It is expected this function is called
5921  * when a new HW bridge is instantiated.
5922  **/
5923 static void i40e_config_bridge_mode(struct i40e_veb *veb)
5924 {
5925         struct i40e_pf *pf = veb->pf;
5926
5927         dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
5928                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
5929         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
5930                 i40e_disable_pf_switch_lb(pf);
5931         else
5932                 i40e_enable_pf_switch_lb(pf);
5933 }
5934
5935 /**
5936  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5937  * @veb: pointer to the VEB instance
5938  *
5939  * This is a recursive function that first builds the attached VSIs then
5940  * recurses in to build the next layer of VEB.  We track the connections
5941  * through our own index numbers because the seid's from the HW could
5942  * change across the reset.
5943  **/
5944 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5945 {
5946         struct i40e_vsi *ctl_vsi = NULL;
5947         struct i40e_pf *pf = veb->pf;
5948         int v, veb_idx;
5949         int ret;
5950
5951         /* build VSI that owns this VEB, temporarily attached to base VEB */
5952         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
5953                 if (pf->vsi[v] &&
5954                     pf->vsi[v]->veb_idx == veb->idx &&
5955                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5956                         ctl_vsi = pf->vsi[v];
5957                         break;
5958                 }
5959         }
5960         if (!ctl_vsi) {
5961                 dev_info(&pf->pdev->dev,
5962                          "missing owner VSI for veb_idx %d\n", veb->idx);
5963                 ret = -ENOENT;
5964                 goto end_reconstitute;
5965         }
5966         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5967                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5968         ret = i40e_add_vsi(ctl_vsi);
5969         if (ret) {
5970                 dev_info(&pf->pdev->dev,
5971                          "rebuild of owner VSI failed: %d\n", ret);
5972                 goto end_reconstitute;
5973         }
5974         i40e_vsi_reset_stats(ctl_vsi);
5975
5976         /* create the VEB in the switch and move the VSI onto the VEB */
5977         ret = i40e_add_veb(veb, ctl_vsi);
5978         if (ret)
5979                 goto end_reconstitute;
5980
5981         i40e_config_bridge_mode(veb);
5982
5983         /* create the remaining VSIs attached to this VEB */
5984         for (v = 0; v < pf->num_alloc_vsi; v++) {
5985                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5986                         continue;
5987
5988                 if (pf->vsi[v]->veb_idx == veb->idx) {
5989                         struct i40e_vsi *vsi = pf->vsi[v];
5990                         vsi->uplink_seid = veb->seid;
5991                         ret = i40e_add_vsi(vsi);
5992                         if (ret) {
5993                                 dev_info(&pf->pdev->dev,
5994                                          "rebuild of vsi_idx %d failed: %d\n",
5995                                          v, ret);
5996                                 goto end_reconstitute;
5997                         }
5998                         i40e_vsi_reset_stats(vsi);
5999                 }
6000         }
6001
6002         /* create any VEBs attached to this VEB - RECURSION */
6003         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6004                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6005                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6006                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6007                         if (ret)
6008                                 break;
6009                 }
6010         }
6011
6012 end_reconstitute:
6013         return ret;
6014 }
6015
6016 /**
6017  * i40e_get_capabilities - get info about the HW
6018  * @pf: the PF struct
6019  **/
6020 static int i40e_get_capabilities(struct i40e_pf *pf)
6021 {
6022         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6023         u16 data_size;
6024         int buf_len;
6025         int err;
6026
6027         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6028         do {
6029                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6030                 if (!cap_buf)
6031                         return -ENOMEM;
6032
6033                 /* this loads the data into the hw struct for us */
6034                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6035                                             &data_size,
6036                                             i40e_aqc_opc_list_func_capabilities,
6037                                             NULL);
6038                 /* data loaded, buffer no longer needed */
6039                 kfree(cap_buf);
6040
6041                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6042                         /* retry with a larger buffer */
6043                         buf_len = data_size;
6044                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6045                         dev_info(&pf->pdev->dev,
6046                                  "capability discovery failed: aq=%d\n",
6047                                  pf->hw.aq.asq_last_status);
6048                         return -ENODEV;
6049                 }
6050         } while (err);
6051
6052         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6053             (pf->hw.aq.fw_maj_ver < 2)) {
6054                 pf->hw.func_caps.num_msix_vectors++;
6055                 pf->hw.func_caps.num_msix_vectors_vf++;
6056         }
6057
6058         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6059                 dev_info(&pf->pdev->dev,
6060                          "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",
6061                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6062                          pf->hw.func_caps.num_msix_vectors,
6063                          pf->hw.func_caps.num_msix_vectors_vf,
6064                          pf->hw.func_caps.fd_filters_guaranteed,
6065                          pf->hw.func_caps.fd_filters_best_effort,
6066                          pf->hw.func_caps.num_tx_qp,
6067                          pf->hw.func_caps.num_vsis);
6068
6069 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6070                        + pf->hw.func_caps.num_vfs)
6071         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6072                 dev_info(&pf->pdev->dev,
6073                          "got num_vsis %d, setting num_vsis to %d\n",
6074                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6075                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6076         }
6077
6078         return 0;
6079 }
6080
6081 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6082
6083 /**
6084  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6085  * @pf: board private structure
6086  **/
6087 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6088 {
6089         struct i40e_vsi *vsi;
6090         int i;
6091
6092         /* quick workaround for an NVM issue that leaves a critical register
6093          * uninitialized
6094          */
6095         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6096                 static const u32 hkey[] = {
6097                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6098                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6099                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6100                         0x95b3a76d};
6101
6102                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6103                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6104         }
6105
6106         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6107                 return;
6108
6109         /* find existing VSI and see if it needs configuring */
6110         vsi = NULL;
6111         for (i = 0; i < pf->num_alloc_vsi; i++) {
6112                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6113                         vsi = pf->vsi[i];
6114                         break;
6115                 }
6116         }
6117
6118         /* create a new VSI if none exists */
6119         if (!vsi) {
6120                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6121                                      pf->vsi[pf->lan_vsi]->seid, 0);
6122                 if (!vsi) {
6123                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6124                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6125                         return;
6126                 }
6127         }
6128
6129         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6130 }
6131
6132 /**
6133  * i40e_fdir_teardown - release the Flow Director resources
6134  * @pf: board private structure
6135  **/
6136 static void i40e_fdir_teardown(struct i40e_pf *pf)
6137 {
6138         int i;
6139
6140         i40e_fdir_filter_exit(pf);
6141         for (i = 0; i < pf->num_alloc_vsi; i++) {
6142                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6143                         i40e_vsi_release(pf->vsi[i]);
6144                         break;
6145                 }
6146         }
6147 }
6148
6149 /**
6150  * i40e_prep_for_reset - prep for the core to reset
6151  * @pf: board private structure
6152  *
6153  * Close up the VFs and other things in prep for pf Reset.
6154   **/
6155 static void i40e_prep_for_reset(struct i40e_pf *pf)
6156 {
6157         struct i40e_hw *hw = &pf->hw;
6158         i40e_status ret = 0;
6159         u32 v;
6160
6161         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6162         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6163                 return;
6164
6165         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6166
6167         /* quiesce the VSIs and their queues that are not already DOWN */
6168         i40e_pf_quiesce_all_vsi(pf);
6169
6170         for (v = 0; v < pf->num_alloc_vsi; v++) {
6171                 if (pf->vsi[v])
6172                         pf->vsi[v]->seid = 0;
6173         }
6174
6175         i40e_shutdown_adminq(&pf->hw);
6176
6177         /* call shutdown HMC */
6178         if (hw->hmc.hmc_obj) {
6179                 ret = i40e_shutdown_lan_hmc(hw);
6180                 if (ret)
6181                         dev_warn(&pf->pdev->dev,
6182                                  "shutdown_lan_hmc failed: %d\n", ret);
6183         }
6184 }
6185
6186 /**
6187  * i40e_send_version - update firmware with driver version
6188  * @pf: PF struct
6189  */
6190 static void i40e_send_version(struct i40e_pf *pf)
6191 {
6192         struct i40e_driver_version dv;
6193
6194         dv.major_version = DRV_VERSION_MAJOR;
6195         dv.minor_version = DRV_VERSION_MINOR;
6196         dv.build_version = DRV_VERSION_BUILD;
6197         dv.subbuild_version = 0;
6198         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6199         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6200 }
6201
6202 /**
6203  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6204  * @pf: board private structure
6205  * @reinit: if the Main VSI needs to re-initialized.
6206  **/
6207 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6208 {
6209         struct i40e_hw *hw = &pf->hw;
6210         u8 set_fc_aq_fail = 0;
6211         i40e_status ret;
6212         u32 v;
6213
6214         /* Now we wait for GRST to settle out.
6215          * We don't have to delete the VEBs or VSIs from the hw switch
6216          * because the reset will make them disappear.
6217          */
6218         ret = i40e_pf_reset(hw);
6219         if (ret) {
6220                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6221                 set_bit(__I40E_RESET_FAILED, &pf->state);
6222                 goto clear_recovery;
6223         }
6224         pf->pfr_count++;
6225
6226         if (test_bit(__I40E_DOWN, &pf->state))
6227                 goto clear_recovery;
6228         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6229
6230         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6231         ret = i40e_init_adminq(&pf->hw);
6232         if (ret) {
6233                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
6234                 goto clear_recovery;
6235         }
6236
6237         /* re-verify the eeprom if we just had an EMP reset */
6238         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6239                 i40e_verify_eeprom(pf);
6240
6241         i40e_clear_pxe_mode(hw);
6242         ret = i40e_get_capabilities(pf);
6243         if (ret) {
6244                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
6245                          ret);
6246                 goto end_core_reset;
6247         }
6248
6249         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6250                                 hw->func_caps.num_rx_qp,
6251                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6252         if (ret) {
6253                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6254                 goto end_core_reset;
6255         }
6256         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6257         if (ret) {
6258                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6259                 goto end_core_reset;
6260         }
6261
6262 #ifdef CONFIG_I40E_DCB
6263         ret = i40e_init_pf_dcb(pf);
6264         if (ret) {
6265                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6266                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6267                 /* Continue without DCB enabled */
6268         }
6269 #endif /* CONFIG_I40E_DCB */
6270 #ifdef I40E_FCOE
6271         ret = i40e_init_pf_fcoe(pf);
6272         if (ret)
6273                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6274
6275 #endif
6276         /* do basic switch setup */
6277         ret = i40e_setup_pf_switch(pf, reinit);
6278         if (ret)
6279                 goto end_core_reset;
6280
6281         /* driver is only interested in link up/down and module qualification
6282          * reports from firmware
6283          */
6284         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6285                                        I40E_AQ_EVENT_LINK_UPDOWN |
6286                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6287         if (ret)
6288                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", ret);
6289
6290         /* make sure our flow control settings are restored */
6291         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6292         if (ret)
6293                 dev_info(&pf->pdev->dev, "set fc fail, aq_err %d\n", ret);
6294
6295         /* Rebuild the VSIs and VEBs that existed before reset.
6296          * They are still in our local switch element arrays, so only
6297          * need to rebuild the switch model in the HW.
6298          *
6299          * If there were VEBs but the reconstitution failed, we'll try
6300          * try to recover minimal use by getting the basic PF VSI working.
6301          */
6302         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6303                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6304                 /* find the one VEB connected to the MAC, and find orphans */
6305                 for (v = 0; v < I40E_MAX_VEB; v++) {
6306                         if (!pf->veb[v])
6307                                 continue;
6308
6309                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6310                             pf->veb[v]->uplink_seid == 0) {
6311                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6312
6313                                 if (!ret)
6314                                         continue;
6315
6316                                 /* If Main VEB failed, we're in deep doodoo,
6317                                  * so give up rebuilding the switch and set up
6318                                  * for minimal rebuild of PF VSI.
6319                                  * If orphan failed, we'll report the error
6320                                  * but try to keep going.
6321                                  */
6322                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6323                                         dev_info(&pf->pdev->dev,
6324                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6325                                                  ret);
6326                                         pf->vsi[pf->lan_vsi]->uplink_seid
6327                                                                 = pf->mac_seid;
6328                                         break;
6329                                 } else if (pf->veb[v]->uplink_seid == 0) {
6330                                         dev_info(&pf->pdev->dev,
6331                                                  "rebuild of orphan VEB failed: %d\n",
6332                                                  ret);
6333                                 }
6334                         }
6335                 }
6336         }
6337
6338         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6339                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6340                 /* no VEB, so rebuild only the Main VSI */
6341                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6342                 if (ret) {
6343                         dev_info(&pf->pdev->dev,
6344                                  "rebuild of Main VSI failed: %d\n", ret);
6345                         goto end_core_reset;
6346                 }
6347         }
6348
6349         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6350             (pf->hw.aq.fw_maj_ver < 4)) {
6351                 msleep(75);
6352                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6353                 if (ret)
6354                         dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
6355                                  pf->hw.aq.asq_last_status);
6356         }
6357         /* reinit the misc interrupt */
6358         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6359                 ret = i40e_setup_misc_vector(pf);
6360
6361         /* restart the VSIs that were rebuilt and running before the reset */
6362         i40e_pf_unquiesce_all_vsi(pf);
6363
6364         if (pf->num_alloc_vfs) {
6365                 for (v = 0; v < pf->num_alloc_vfs; v++)
6366                         i40e_reset_vf(&pf->vf[v], true);
6367         }
6368
6369         /* tell the firmware that we're starting */
6370         i40e_send_version(pf);
6371
6372 end_core_reset:
6373         clear_bit(__I40E_RESET_FAILED, &pf->state);
6374 clear_recovery:
6375         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6376 }
6377
6378 /**
6379  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
6380  * @pf: board private structure
6381  *
6382  * Close up the VFs and other things in prep for a Core Reset,
6383  * then get ready to rebuild the world.
6384  **/
6385 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6386 {
6387         i40e_prep_for_reset(pf);
6388         i40e_reset_and_rebuild(pf, false);
6389 }
6390
6391 /**
6392  * i40e_handle_mdd_event
6393  * @pf: pointer to the pf structure
6394  *
6395  * Called from the MDD irq handler to identify possibly malicious vfs
6396  **/
6397 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6398 {
6399         struct i40e_hw *hw = &pf->hw;
6400         bool mdd_detected = false;
6401         bool pf_mdd_detected = false;
6402         struct i40e_vf *vf;
6403         u32 reg;
6404         int i;
6405
6406         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6407                 return;
6408
6409         /* find what triggered the MDD event */
6410         reg = rd32(hw, I40E_GL_MDET_TX);
6411         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6412                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6413                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6414                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6415                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6416                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6417                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6418                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6419                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6420                                 pf->hw.func_caps.base_queue;
6421                 if (netif_msg_tx_err(pf))
6422                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d pf number 0x%02x vf number 0x%02x\n",
6423                                  event, queue, pf_num, vf_num);
6424                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6425                 mdd_detected = true;
6426         }
6427         reg = rd32(hw, I40E_GL_MDET_RX);
6428         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6429                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6430                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6431                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6432                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6433                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6434                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6435                                 pf->hw.func_caps.base_queue;
6436                 if (netif_msg_rx_err(pf))
6437                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6438                                  event, queue, func);
6439                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6440                 mdd_detected = true;
6441         }
6442
6443         if (mdd_detected) {
6444                 reg = rd32(hw, I40E_PF_MDET_TX);
6445                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6446                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6447                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6448                         pf_mdd_detected = true;
6449                 }
6450                 reg = rd32(hw, I40E_PF_MDET_RX);
6451                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6452                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6453                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6454                         pf_mdd_detected = true;
6455                 }
6456                 /* Queue belongs to the PF, initiate a reset */
6457                 if (pf_mdd_detected) {
6458                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6459                         i40e_service_event_schedule(pf);
6460                 }
6461         }
6462
6463         /* see if one of the VFs needs its hand slapped */
6464         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6465                 vf = &(pf->vf[i]);
6466                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6467                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6468                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6469                         vf->num_mdd_events++;
6470                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6471                                  i);
6472                 }
6473
6474                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6475                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6476                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6477                         vf->num_mdd_events++;
6478                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6479                                  i);
6480                 }
6481
6482                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6483                         dev_info(&pf->pdev->dev,
6484                                  "Too many MDD events on VF %d, disabled\n", i);
6485                         dev_info(&pf->pdev->dev,
6486                                  "Use PF Control I/F to re-enable the VF\n");
6487                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6488                 }
6489         }
6490
6491         /* re-enable mdd interrupt cause */
6492         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6493         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6494         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6495         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6496         i40e_flush(hw);
6497 }
6498
6499 #ifdef CONFIG_I40E_VXLAN
6500 /**
6501  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6502  * @pf: board private structure
6503  **/
6504 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6505 {
6506         struct i40e_hw *hw = &pf->hw;
6507         i40e_status ret;
6508         u8 filter_index;
6509         __be16 port;
6510         int i;
6511
6512         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6513                 return;
6514
6515         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6516
6517         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6518                 if (pf->pending_vxlan_bitmap & (1 << i)) {
6519                         pf->pending_vxlan_bitmap &= ~(1 << i);
6520                         port = pf->vxlan_ports[i];
6521                         ret = port ?
6522                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
6523                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6524                                                      &filter_index, NULL)
6525                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
6526
6527                         if (ret) {
6528                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
6529                                          port ? "adding" : "deleting",
6530                                          ntohs(port), port ? i : i);
6531
6532                                 pf->vxlan_ports[i] = 0;
6533                         } else {
6534                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
6535                                          port ? "Added" : "Deleted",
6536                                          ntohs(port), port ? i : filter_index);
6537                         }
6538                 }
6539         }
6540 }
6541
6542 #endif
6543 /**
6544  * i40e_service_task - Run the driver's async subtasks
6545  * @work: pointer to work_struct containing our data
6546  **/
6547 static void i40e_service_task(struct work_struct *work)
6548 {
6549         struct i40e_pf *pf = container_of(work,
6550                                           struct i40e_pf,
6551                                           service_task);
6552         unsigned long start_time = jiffies;
6553
6554         /* don't bother with service tasks if a reset is in progress */
6555         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6556                 i40e_service_event_complete(pf);
6557                 return;
6558         }
6559
6560         i40e_reset_subtask(pf);
6561         i40e_handle_mdd_event(pf);
6562         i40e_vc_process_vflr_event(pf);
6563         i40e_watchdog_subtask(pf);
6564         i40e_fdir_reinit_subtask(pf);
6565         i40e_sync_filters_subtask(pf);
6566 #ifdef CONFIG_I40E_VXLAN
6567         i40e_sync_vxlan_filters_subtask(pf);
6568 #endif
6569         i40e_clean_adminq_subtask(pf);
6570
6571         i40e_service_event_complete(pf);
6572
6573         /* If the tasks have taken longer than one timer cycle or there
6574          * is more work to be done, reschedule the service task now
6575          * rather than wait for the timer to tick again.
6576          */
6577         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6578             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6579             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6580             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6581                 i40e_service_event_schedule(pf);
6582 }
6583
6584 /**
6585  * i40e_service_timer - timer callback
6586  * @data: pointer to PF struct
6587  **/
6588 static void i40e_service_timer(unsigned long data)
6589 {
6590         struct i40e_pf *pf = (struct i40e_pf *)data;
6591
6592         mod_timer(&pf->service_timer,
6593                   round_jiffies(jiffies + pf->service_timer_period));
6594         i40e_service_event_schedule(pf);
6595 }
6596
6597 /**
6598  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6599  * @vsi: the VSI being configured
6600  **/
6601 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6602 {
6603         struct i40e_pf *pf = vsi->back;
6604
6605         switch (vsi->type) {
6606         case I40E_VSI_MAIN:
6607                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6608                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6609                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6610                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6611                         vsi->num_q_vectors = pf->num_lan_msix;
6612                 else
6613                         vsi->num_q_vectors = 1;
6614
6615                 break;
6616
6617         case I40E_VSI_FDIR:
6618                 vsi->alloc_queue_pairs = 1;
6619                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6620                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6621                 vsi->num_q_vectors = 1;
6622                 break;
6623
6624         case I40E_VSI_VMDQ2:
6625                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6626                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6627                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6628                 vsi->num_q_vectors = pf->num_vmdq_msix;
6629                 break;
6630
6631         case I40E_VSI_SRIOV:
6632                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6633                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6634                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6635                 break;
6636
6637 #ifdef I40E_FCOE
6638         case I40E_VSI_FCOE:
6639                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6640                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6641                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6642                 vsi->num_q_vectors = pf->num_fcoe_msix;
6643                 break;
6644
6645 #endif /* I40E_FCOE */
6646         default:
6647                 WARN_ON(1);
6648                 return -ENODATA;
6649         }
6650
6651         return 0;
6652 }
6653
6654 /**
6655  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6656  * @type: VSI pointer
6657  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6658  *
6659  * On error: returns error code (negative)
6660  * On success: returns 0
6661  **/
6662 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6663 {
6664         int size;
6665         int ret = 0;
6666
6667         /* allocate memory for both Tx and Rx ring pointers */
6668         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6669         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6670         if (!vsi->tx_rings)
6671                 return -ENOMEM;
6672         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6673
6674         if (alloc_qvectors) {
6675                 /* allocate memory for q_vector pointers */
6676                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6677                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6678                 if (!vsi->q_vectors) {
6679                         ret = -ENOMEM;
6680                         goto err_vectors;
6681                 }
6682         }
6683         return ret;
6684
6685 err_vectors:
6686         kfree(vsi->tx_rings);
6687         return ret;
6688 }
6689
6690 /**
6691  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6692  * @pf: board private structure
6693  * @type: type of VSI
6694  *
6695  * On error: returns error code (negative)
6696  * On success: returns vsi index in PF (positive)
6697  **/
6698 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6699 {
6700         int ret = -ENODEV;
6701         struct i40e_vsi *vsi;
6702         int vsi_idx;
6703         int i;
6704
6705         /* Need to protect the allocation of the VSIs at the PF level */
6706         mutex_lock(&pf->switch_mutex);
6707
6708         /* VSI list may be fragmented if VSI creation/destruction has
6709          * been happening.  We can afford to do a quick scan to look
6710          * for any free VSIs in the list.
6711          *
6712          * find next empty vsi slot, looping back around if necessary
6713          */
6714         i = pf->next_vsi;
6715         while (i < pf->num_alloc_vsi && pf->vsi[i])
6716                 i++;
6717         if (i >= pf->num_alloc_vsi) {
6718                 i = 0;
6719                 while (i < pf->next_vsi && pf->vsi[i])
6720                         i++;
6721         }
6722
6723         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6724                 vsi_idx = i;             /* Found one! */
6725         } else {
6726                 ret = -ENODEV;
6727                 goto unlock_pf;  /* out of VSI slots! */
6728         }
6729         pf->next_vsi = ++i;
6730
6731         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6732         if (!vsi) {
6733                 ret = -ENOMEM;
6734                 goto unlock_pf;
6735         }
6736         vsi->type = type;
6737         vsi->back = pf;
6738         set_bit(__I40E_DOWN, &vsi->state);
6739         vsi->flags = 0;
6740         vsi->idx = vsi_idx;
6741         vsi->rx_itr_setting = pf->rx_itr_default;
6742         vsi->tx_itr_setting = pf->tx_itr_default;
6743         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
6744                                 pf->rss_table_size : 64;
6745         vsi->netdev_registered = false;
6746         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6747         INIT_LIST_HEAD(&vsi->mac_filter_list);
6748         vsi->irqs_ready = false;
6749
6750         ret = i40e_set_num_rings_in_vsi(vsi);
6751         if (ret)
6752                 goto err_rings;
6753
6754         ret = i40e_vsi_alloc_arrays(vsi, true);
6755         if (ret)
6756                 goto err_rings;
6757
6758         /* Setup default MSIX irq handler for VSI */
6759         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6760
6761         pf->vsi[vsi_idx] = vsi;
6762         ret = vsi_idx;
6763         goto unlock_pf;
6764
6765 err_rings:
6766         pf->next_vsi = i - 1;
6767         kfree(vsi);
6768 unlock_pf:
6769         mutex_unlock(&pf->switch_mutex);
6770         return ret;
6771 }
6772
6773 /**
6774  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6775  * @type: VSI pointer
6776  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6777  *
6778  * On error: returns error code (negative)
6779  * On success: returns 0
6780  **/
6781 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6782 {
6783         /* free the ring and vector containers */
6784         if (free_qvectors) {
6785                 kfree(vsi->q_vectors);
6786                 vsi->q_vectors = NULL;
6787         }
6788         kfree(vsi->tx_rings);
6789         vsi->tx_rings = NULL;
6790         vsi->rx_rings = NULL;
6791 }
6792
6793 /**
6794  * i40e_vsi_clear - Deallocate the VSI provided
6795  * @vsi: the VSI being un-configured
6796  **/
6797 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6798 {
6799         struct i40e_pf *pf;
6800
6801         if (!vsi)
6802                 return 0;
6803
6804         if (!vsi->back)
6805                 goto free_vsi;
6806         pf = vsi->back;
6807
6808         mutex_lock(&pf->switch_mutex);
6809         if (!pf->vsi[vsi->idx]) {
6810                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6811                         vsi->idx, vsi->idx, vsi, vsi->type);
6812                 goto unlock_vsi;
6813         }
6814
6815         if (pf->vsi[vsi->idx] != vsi) {
6816                 dev_err(&pf->pdev->dev,
6817                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6818                         pf->vsi[vsi->idx]->idx,
6819                         pf->vsi[vsi->idx],
6820                         pf->vsi[vsi->idx]->type,
6821                         vsi->idx, vsi, vsi->type);
6822                 goto unlock_vsi;
6823         }
6824
6825         /* updates the pf for this cleared vsi */
6826         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6827         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6828
6829         i40e_vsi_free_arrays(vsi, true);
6830
6831         pf->vsi[vsi->idx] = NULL;
6832         if (vsi->idx < pf->next_vsi)
6833                 pf->next_vsi = vsi->idx;
6834
6835 unlock_vsi:
6836         mutex_unlock(&pf->switch_mutex);
6837 free_vsi:
6838         kfree(vsi);
6839
6840         return 0;
6841 }
6842
6843 /**
6844  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6845  * @vsi: the VSI being cleaned
6846  **/
6847 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6848 {
6849         int i;
6850
6851         if (vsi->tx_rings && vsi->tx_rings[0]) {
6852                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6853                         kfree_rcu(vsi->tx_rings[i], rcu);
6854                         vsi->tx_rings[i] = NULL;
6855                         vsi->rx_rings[i] = NULL;
6856                 }
6857         }
6858 }
6859
6860 /**
6861  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6862  * @vsi: the VSI being configured
6863  **/
6864 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6865 {
6866         struct i40e_ring *tx_ring, *rx_ring;
6867         struct i40e_pf *pf = vsi->back;
6868         int i;
6869
6870         /* Set basic values in the rings to be used later during open() */
6871         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6872                 /* allocate space for both Tx and Rx in one shot */
6873                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6874                 if (!tx_ring)
6875                         goto err_out;
6876
6877                 tx_ring->queue_index = i;
6878                 tx_ring->reg_idx = vsi->base_queue + i;
6879                 tx_ring->ring_active = false;
6880                 tx_ring->vsi = vsi;
6881                 tx_ring->netdev = vsi->netdev;
6882                 tx_ring->dev = &pf->pdev->dev;
6883                 tx_ring->count = vsi->num_desc;
6884                 tx_ring->size = 0;
6885                 tx_ring->dcb_tc = 0;
6886                 vsi->tx_rings[i] = tx_ring;
6887
6888                 rx_ring = &tx_ring[1];
6889                 rx_ring->queue_index = i;
6890                 rx_ring->reg_idx = vsi->base_queue + i;
6891                 rx_ring->ring_active = false;
6892                 rx_ring->vsi = vsi;
6893                 rx_ring->netdev = vsi->netdev;
6894                 rx_ring->dev = &pf->pdev->dev;
6895                 rx_ring->count = vsi->num_desc;
6896                 rx_ring->size = 0;
6897                 rx_ring->dcb_tc = 0;
6898                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6899                         set_ring_16byte_desc_enabled(rx_ring);
6900                 else
6901                         clear_ring_16byte_desc_enabled(rx_ring);
6902                 vsi->rx_rings[i] = rx_ring;
6903         }
6904
6905         return 0;
6906
6907 err_out:
6908         i40e_vsi_clear_rings(vsi);
6909         return -ENOMEM;
6910 }
6911
6912 /**
6913  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6914  * @pf: board private structure
6915  * @vectors: the number of MSI-X vectors to request
6916  *
6917  * Returns the number of vectors reserved, or error
6918  **/
6919 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6920 {
6921         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6922                                         I40E_MIN_MSIX, vectors);
6923         if (vectors < 0) {
6924                 dev_info(&pf->pdev->dev,
6925                          "MSI-X vector reservation failed: %d\n", vectors);
6926                 vectors = 0;
6927         }
6928
6929         return vectors;
6930 }
6931
6932 /**
6933  * i40e_init_msix - Setup the MSIX capability
6934  * @pf: board private structure
6935  *
6936  * Work with the OS to set up the MSIX vectors needed.
6937  *
6938  * Returns the number of vectors reserved or negative on failure
6939  **/
6940 static int i40e_init_msix(struct i40e_pf *pf)
6941 {
6942         struct i40e_hw *hw = &pf->hw;
6943         int other_vecs = 0;
6944         int v_budget, i;
6945         int v_actual;
6946
6947         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6948                 return -ENODEV;
6949
6950         /* The number of vectors we'll request will be comprised of:
6951          *   - Add 1 for "other" cause for Admin Queue events, etc.
6952          *   - The number of LAN queue pairs
6953          *      - Queues being used for RSS.
6954          *              We don't need as many as max_rss_size vectors.
6955          *              use rss_size instead in the calculation since that
6956          *              is governed by number of cpus in the system.
6957          *      - assumes symmetric Tx/Rx pairing
6958          *   - The number of VMDq pairs
6959 #ifdef I40E_FCOE
6960          *   - The number of FCOE qps.
6961 #endif
6962          * Once we count this up, try the request.
6963          *
6964          * If we can't get what we want, we'll simplify to nearly nothing
6965          * and try again.  If that still fails, we punt.
6966          */
6967         pf->num_lan_msix = min_t(int, num_online_cpus(),
6968                                  hw->func_caps.num_msix_vectors);
6969         pf->num_vmdq_msix = pf->num_vmdq_qps;
6970         other_vecs = 1;
6971         other_vecs += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6972         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6973                 other_vecs++;
6974
6975         /* Scale down if necessary, and the rings will share vectors */
6976         pf->num_lan_msix = min_t(int, pf->num_lan_msix,
6977                         (hw->func_caps.num_msix_vectors - other_vecs));
6978         v_budget = pf->num_lan_msix + other_vecs;
6979
6980 #ifdef I40E_FCOE
6981         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6982                 pf->num_fcoe_msix = pf->num_fcoe_qps;
6983                 v_budget += pf->num_fcoe_msix;
6984         }
6985 #endif
6986
6987         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6988                                    GFP_KERNEL);
6989         if (!pf->msix_entries)
6990                 return -ENOMEM;
6991
6992         for (i = 0; i < v_budget; i++)
6993                 pf->msix_entries[i].entry = i;
6994         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
6995
6996         if (v_actual != v_budget) {
6997                 /* If we have limited resources, we will start with no vectors
6998                  * for the special features and then allocate vectors to some
6999                  * of these features based on the policy and at the end disable
7000                  * the features that did not get any vectors.
7001                  */
7002 #ifdef I40E_FCOE
7003                 pf->num_fcoe_qps = 0;
7004                 pf->num_fcoe_msix = 0;
7005 #endif
7006                 pf->num_vmdq_msix = 0;
7007         }
7008
7009         if (v_actual < I40E_MIN_MSIX) {
7010                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7011                 kfree(pf->msix_entries);
7012                 pf->msix_entries = NULL;
7013                 return -ENODEV;
7014
7015         } else if (v_actual == I40E_MIN_MSIX) {
7016                 /* Adjust for minimal MSIX use */
7017                 pf->num_vmdq_vsis = 0;
7018                 pf->num_vmdq_qps = 0;
7019                 pf->num_lan_qps = 1;
7020                 pf->num_lan_msix = 1;
7021
7022         } else if (v_actual != v_budget) {
7023                 int vec;
7024
7025                 /* reserve the misc vector */
7026                 vec = v_actual - 1;
7027
7028                 /* Scale vector usage down */
7029                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7030                 pf->num_vmdq_vsis = 1;
7031
7032                 /* partition out the remaining vectors */
7033                 switch (vec) {
7034                 case 2:
7035                         pf->num_lan_msix = 1;
7036                         break;
7037                 case 3:
7038 #ifdef I40E_FCOE
7039                         /* give one vector to FCoE */
7040                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7041                                 pf->num_lan_msix = 1;
7042                                 pf->num_fcoe_msix = 1;
7043                         }
7044 #else
7045                         pf->num_lan_msix = 2;
7046 #endif
7047                         break;
7048                 default:
7049 #ifdef I40E_FCOE
7050                         /* give one vector to FCoE */
7051                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7052                                 pf->num_fcoe_msix = 1;
7053                                 vec--;
7054                         }
7055 #endif
7056                         pf->num_lan_msix = min_t(int, (vec / 2),
7057                                                  pf->num_lan_qps);
7058                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
7059                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7060                         break;
7061                 }
7062         }
7063
7064         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7065             (pf->num_vmdq_msix == 0)) {
7066                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7067                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7068         }
7069 #ifdef I40E_FCOE
7070
7071         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7072                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7073                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7074         }
7075 #endif
7076         return v_actual;
7077 }
7078
7079 /**
7080  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7081  * @vsi: the VSI being configured
7082  * @v_idx: index of the vector in the vsi struct
7083  *
7084  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7085  **/
7086 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7087 {
7088         struct i40e_q_vector *q_vector;
7089
7090         /* allocate q_vector */
7091         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7092         if (!q_vector)
7093                 return -ENOMEM;
7094
7095         q_vector->vsi = vsi;
7096         q_vector->v_idx = v_idx;
7097         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7098         if (vsi->netdev)
7099                 netif_napi_add(vsi->netdev, &q_vector->napi,
7100                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7101
7102         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7103         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7104
7105         /* tie q_vector and vsi together */
7106         vsi->q_vectors[v_idx] = q_vector;
7107
7108         return 0;
7109 }
7110
7111 /**
7112  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7113  * @vsi: the VSI being configured
7114  *
7115  * We allocate one q_vector per queue interrupt.  If allocation fails we
7116  * return -ENOMEM.
7117  **/
7118 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7119 {
7120         struct i40e_pf *pf = vsi->back;
7121         int v_idx, num_q_vectors;
7122         int err;
7123
7124         /* if not MSIX, give the one vector only to the LAN VSI */
7125         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7126                 num_q_vectors = vsi->num_q_vectors;
7127         else if (vsi == pf->vsi[pf->lan_vsi])
7128                 num_q_vectors = 1;
7129         else
7130                 return -EINVAL;
7131
7132         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7133                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7134                 if (err)
7135                         goto err_out;
7136         }
7137
7138         return 0;
7139
7140 err_out:
7141         while (v_idx--)
7142                 i40e_free_q_vector(vsi, v_idx);
7143
7144         return err;
7145 }
7146
7147 /**
7148  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7149  * @pf: board private structure to initialize
7150  **/
7151 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
7152 {
7153         int vectors = 0;
7154         ssize_t size;
7155
7156         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7157                 vectors = i40e_init_msix(pf);
7158                 if (vectors < 0) {
7159                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7160 #ifdef I40E_FCOE
7161                                        I40E_FLAG_FCOE_ENABLED   |
7162 #endif
7163                                        I40E_FLAG_RSS_ENABLED    |
7164                                        I40E_FLAG_DCB_CAPABLE    |
7165                                        I40E_FLAG_SRIOV_ENABLED  |
7166                                        I40E_FLAG_FD_SB_ENABLED  |
7167                                        I40E_FLAG_FD_ATR_ENABLED |
7168                                        I40E_FLAG_VMDQ_ENABLED);
7169
7170                         /* rework the queue expectations without MSIX */
7171                         i40e_determine_queue_usage(pf);
7172                 }
7173         }
7174
7175         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7176             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7177                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7178                 vectors = pci_enable_msi(pf->pdev);
7179                 if (vectors < 0) {
7180                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7181                                  vectors);
7182                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7183                 }
7184                 vectors = 1;  /* one MSI or Legacy vector */
7185         }
7186
7187         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7188                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7189
7190         /* set up vector assignment tracking */
7191         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7192         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7193         pf->irq_pile->num_entries = vectors;
7194         pf->irq_pile->search_hint = 0;
7195
7196         /* track first vector for misc interrupts */
7197         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7198 }
7199
7200 /**
7201  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7202  * @pf: board private structure
7203  *
7204  * This sets up the handler for MSIX 0, which is used to manage the
7205  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7206  * when in MSI or Legacy interrupt mode.
7207  **/
7208 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7209 {
7210         struct i40e_hw *hw = &pf->hw;
7211         int err = 0;
7212
7213         /* Only request the irq if this is the first time through, and
7214          * not when we're rebuilding after a Reset
7215          */
7216         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7217                 err = request_irq(pf->msix_entries[0].vector,
7218                                   i40e_intr, 0, pf->int_name, pf);
7219                 if (err) {
7220                         dev_info(&pf->pdev->dev,
7221                                  "request_irq for %s failed: %d\n",
7222                                  pf->int_name, err);
7223                         return -EFAULT;
7224                 }
7225         }
7226
7227         i40e_enable_misc_int_causes(pf);
7228
7229         /* associate no queues to the misc vector */
7230         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7231         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7232
7233         i40e_flush(hw);
7234
7235         i40e_irq_dynamic_enable_icr0(pf);
7236
7237         return err;
7238 }
7239
7240 /**
7241  * i40e_config_rss - Prepare for RSS if used
7242  * @pf: board private structure
7243  **/
7244 static int i40e_config_rss(struct i40e_pf *pf)
7245 {
7246         u32 rss_key[I40E_PFQF_HKEY_MAX_INDEX + 1];
7247         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7248         struct i40e_hw *hw = &pf->hw;
7249         u32 lut = 0;
7250         int i, j;
7251         u64 hena;
7252         u32 reg_val;
7253
7254         netdev_rss_key_fill(rss_key, sizeof(rss_key));
7255         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7256                 wr32(hw, I40E_PFQF_HKEY(i), rss_key[i]);
7257
7258         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7259         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7260                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7261         hena |= I40E_DEFAULT_RSS_HENA;
7262         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7263         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7264
7265         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7266
7267         /* Check capability and Set table size and register per hw expectation*/
7268         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7269         if (hw->func_caps.rss_table_size == 512) {
7270                 reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7271                 pf->rss_table_size = 512;
7272         } else {
7273                 pf->rss_table_size = 128;
7274                 reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7275         }
7276         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7277
7278         /* Populate the LUT with max no. of queues in round robin fashion */
7279         for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
7280
7281                 /* The assumption is that lan qp count will be the highest
7282                  * qp count for any PF VSI that needs RSS.
7283                  * If multiple VSIs need RSS support, all the qp counts
7284                  * for those VSIs should be a power of 2 for RSS to work.
7285                  * If LAN VSI is the only consumer for RSS then this requirement
7286                  * is not necessary.
7287                  */
7288                 if (j == vsi->rss_size)
7289                         j = 0;
7290                 /* lut = 4-byte sliding window of 4 lut entries */
7291                 lut = (lut << 8) | (j &
7292                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
7293                 /* On i = 3, we have 4 entries in lut; write to the register */
7294                 if ((i & 3) == 3)
7295                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
7296         }
7297         i40e_flush(hw);
7298
7299         return 0;
7300 }
7301
7302 /**
7303  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7304  * @pf: board private structure
7305  * @queue_count: the requested queue count for rss.
7306  *
7307  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7308  * count which may be different from the requested queue count.
7309  **/
7310 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7311 {
7312         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7313         int new_rss_size;
7314
7315         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7316                 return 0;
7317
7318         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7319
7320         if (queue_count != vsi->num_queue_pairs) {
7321                 vsi->req_queue_pairs = queue_count;
7322                 i40e_prep_for_reset(pf);
7323
7324                 pf->rss_size = new_rss_size;
7325
7326                 i40e_reset_and_rebuild(pf, true);
7327                 i40e_config_rss(pf);
7328         }
7329         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7330         return pf->rss_size;
7331 }
7332
7333 /**
7334  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7335  * @pf: board private structure
7336  **/
7337 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7338 {
7339         i40e_status status;
7340         bool min_valid, max_valid;
7341         u32 max_bw, min_bw;
7342
7343         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7344                                            &min_valid, &max_valid);
7345
7346         if (!status) {
7347                 if (min_valid)
7348                         pf->npar_min_bw = min_bw;
7349                 if (max_valid)
7350                         pf->npar_max_bw = max_bw;
7351         }
7352
7353         return status;
7354 }
7355
7356 /**
7357  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7358  * @pf: board private structure
7359  **/
7360 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7361 {
7362         struct i40e_aqc_configure_partition_bw_data bw_data;
7363         i40e_status status;
7364
7365         /* Set the valid bit for this pf */
7366         bw_data.pf_valid_bits = cpu_to_le16(1 << pf->hw.pf_id);
7367         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7368         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7369
7370         /* Set the new bandwidths */
7371         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7372
7373         return status;
7374 }
7375
7376 /**
7377  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7378  * @pf: board private structure
7379  **/
7380 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7381 {
7382         /* Commit temporary BW setting to permanent NVM image */
7383         enum i40e_admin_queue_err last_aq_status;
7384         i40e_status ret;
7385         u16 nvm_word;
7386
7387         if (pf->hw.partition_id != 1) {
7388                 dev_info(&pf->pdev->dev,
7389                          "Commit BW only works on partition 1! This is partition %d",
7390                          pf->hw.partition_id);
7391                 ret = I40E_NOT_SUPPORTED;
7392                 goto bw_commit_out;
7393         }
7394
7395         /* Acquire NVM for read access */
7396         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7397         last_aq_status = pf->hw.aq.asq_last_status;
7398         if (ret) {
7399                 dev_info(&pf->pdev->dev,
7400                          "Cannot acquire NVM for read access, err %d: aq_err %d\n",
7401                          ret, last_aq_status);
7402                 goto bw_commit_out;
7403         }
7404
7405         /* Read word 0x10 of NVM - SW compatibility word 1 */
7406         ret = i40e_aq_read_nvm(&pf->hw,
7407                                I40E_SR_NVM_CONTROL_WORD,
7408                                0x10, sizeof(nvm_word), &nvm_word,
7409                                false, NULL);
7410         /* Save off last admin queue command status before releasing
7411          * the NVM
7412          */
7413         last_aq_status = pf->hw.aq.asq_last_status;
7414         i40e_release_nvm(&pf->hw);
7415         if (ret) {
7416                 dev_info(&pf->pdev->dev, "NVM read error, err %d aq_err %d\n",
7417                          ret, last_aq_status);
7418                 goto bw_commit_out;
7419         }
7420
7421         /* Wait a bit for NVM release to complete */
7422         msleep(50);
7423
7424         /* Acquire NVM for write access */
7425         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7426         last_aq_status = pf->hw.aq.asq_last_status;
7427         if (ret) {
7428                 dev_info(&pf->pdev->dev,
7429                          "Cannot acquire NVM for write access, err %d: aq_err %d\n",
7430                          ret, last_aq_status);
7431                 goto bw_commit_out;
7432         }
7433         /* Write it back out unchanged to initiate update NVM,
7434          * which will force a write of the shadow (alt) RAM to
7435          * the NVM - thus storing the bandwidth values permanently.
7436          */
7437         ret = i40e_aq_update_nvm(&pf->hw,
7438                                  I40E_SR_NVM_CONTROL_WORD,
7439                                  0x10, sizeof(nvm_word),
7440                                  &nvm_word, true, NULL);
7441         /* Save off last admin queue command status before releasing
7442          * the NVM
7443          */
7444         last_aq_status = pf->hw.aq.asq_last_status;
7445         i40e_release_nvm(&pf->hw);
7446         if (ret)
7447                 dev_info(&pf->pdev->dev,
7448                          "BW settings NOT SAVED, err %d aq_err %d\n",
7449                          ret, last_aq_status);
7450 bw_commit_out:
7451
7452         return ret;
7453 }
7454
7455 /**
7456  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7457  * @pf: board private structure to initialize
7458  *
7459  * i40e_sw_init initializes the Adapter private data structure.
7460  * Fields are initialized based on PCI device information and
7461  * OS network device settings (MTU size).
7462  **/
7463 static int i40e_sw_init(struct i40e_pf *pf)
7464 {
7465         int err = 0;
7466         int size;
7467
7468         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7469                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7470         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7471         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7472                 if (I40E_DEBUG_USER & debug)
7473                         pf->hw.debug_mask = debug;
7474                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7475                                                 I40E_DEFAULT_MSG_ENABLE);
7476         }
7477
7478         /* Set default capability flags */
7479         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7480                     I40E_FLAG_MSI_ENABLED     |
7481                     I40E_FLAG_MSIX_ENABLED;
7482
7483         if (iommu_present(&pci_bus_type))
7484                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7485         else
7486                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7487
7488         /* Set default ITR */
7489         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7490         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7491
7492         /* Depending on PF configurations, it is possible that the RSS
7493          * maximum might end up larger than the available queues
7494          */
7495         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
7496         pf->rss_size = 1;
7497         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7498         pf->rss_size_max = min_t(int, pf->rss_size_max,
7499                                  pf->hw.func_caps.num_tx_qp);
7500         if (pf->hw.func_caps.rss) {
7501                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7502                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7503         }
7504
7505         /* MFP mode enabled */
7506         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
7507                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7508                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7509                 if (i40e_get_npar_bw_setting(pf))
7510                         dev_warn(&pf->pdev->dev,
7511                                  "Could not get NPAR bw settings\n");
7512                 else
7513                         dev_info(&pf->pdev->dev,
7514                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7515                                  pf->npar_min_bw, pf->npar_max_bw);
7516         }
7517
7518         /* FW/NVM is not yet fixed in this regard */
7519         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7520             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7521                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7522                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7523                 /* Setup a counter for fd_atr per pf */
7524                 pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
7525                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7526                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7527                         /* Setup a counter for fd_sb per pf */
7528                         pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
7529                 } else {
7530                         dev_info(&pf->pdev->dev,
7531                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7532                 }
7533                 pf->fdir_pf_filter_count =
7534                                  pf->hw.func_caps.fd_filters_guaranteed;
7535                 pf->hw.fdir_shared_filter_count =
7536                                  pf->hw.func_caps.fd_filters_best_effort;
7537         }
7538
7539         if (pf->hw.func_caps.vmdq) {
7540                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7541                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7542                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
7543         }
7544
7545 #ifdef I40E_FCOE
7546         err = i40e_init_pf_fcoe(pf);
7547         if (err)
7548                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7549
7550 #endif /* I40E_FCOE */
7551 #ifdef CONFIG_PCI_IOV
7552         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7553                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7554                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7555                 pf->num_req_vfs = min_t(int,
7556                                         pf->hw.func_caps.num_vfs,
7557                                         I40E_MAX_VF_COUNT);
7558         }
7559 #endif /* CONFIG_PCI_IOV */
7560         pf->eeprom_version = 0xDEAD;
7561         pf->lan_veb = I40E_NO_VEB;
7562         pf->lan_vsi = I40E_NO_VSI;
7563
7564         /* set up queue assignment tracking */
7565         size = sizeof(struct i40e_lump_tracking)
7566                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7567         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7568         if (!pf->qp_pile) {
7569                 err = -ENOMEM;
7570                 goto sw_init_done;
7571         }
7572         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7573         pf->qp_pile->search_hint = 0;
7574
7575         pf->tx_timeout_recovery_level = 1;
7576
7577         mutex_init(&pf->switch_mutex);
7578
7579         /* If NPAR is enabled nudge the Tx scheduler */
7580         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
7581                 i40e_set_npar_bw_setting(pf);
7582
7583 sw_init_done:
7584         return err;
7585 }
7586
7587 /**
7588  * i40e_set_ntuple - set the ntuple feature flag and take action
7589  * @pf: board private structure to initialize
7590  * @features: the feature set that the stack is suggesting
7591  *
7592  * returns a bool to indicate if reset needs to happen
7593  **/
7594 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7595 {
7596         bool need_reset = false;
7597
7598         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7599          * the state changed, we need to reset.
7600          */
7601         if (features & NETIF_F_NTUPLE) {
7602                 /* Enable filters and mark for reset */
7603                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7604                         need_reset = true;
7605                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7606         } else {
7607                 /* turn off filters, mark for reset and clear SW filter list */
7608                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7609                         need_reset = true;
7610                         i40e_fdir_filter_exit(pf);
7611                 }
7612                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7613                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7614                 /* reset fd counters */
7615                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7616                 pf->fdir_pf_active_filters = 0;
7617                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7618                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7619                 /* if ATR was auto disabled it can be re-enabled. */
7620                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
7621                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
7622                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
7623         }
7624         return need_reset;
7625 }
7626
7627 /**
7628  * i40e_set_features - set the netdev feature flags
7629  * @netdev: ptr to the netdev being adjusted
7630  * @features: the feature set that the stack is suggesting
7631  **/
7632 static int i40e_set_features(struct net_device *netdev,
7633                              netdev_features_t features)
7634 {
7635         struct i40e_netdev_priv *np = netdev_priv(netdev);
7636         struct i40e_vsi *vsi = np->vsi;
7637         struct i40e_pf *pf = vsi->back;
7638         bool need_reset;
7639
7640         if (features & NETIF_F_HW_VLAN_CTAG_RX)
7641                 i40e_vlan_stripping_enable(vsi);
7642         else
7643                 i40e_vlan_stripping_disable(vsi);
7644
7645         need_reset = i40e_set_ntuple(pf, features);
7646
7647         if (need_reset)
7648                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7649
7650         return 0;
7651 }
7652
7653 #ifdef CONFIG_I40E_VXLAN
7654 /**
7655  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
7656  * @pf: board private structure
7657  * @port: The UDP port to look up
7658  *
7659  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
7660  **/
7661 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
7662 {
7663         u8 i;
7664
7665         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7666                 if (pf->vxlan_ports[i] == port)
7667                         return i;
7668         }
7669
7670         return i;
7671 }
7672
7673 /**
7674  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
7675  * @netdev: This physical port's netdev
7676  * @sa_family: Socket Family that VXLAN is notifying us about
7677  * @port: New UDP port number that VXLAN started listening to
7678  **/
7679 static void i40e_add_vxlan_port(struct net_device *netdev,
7680                                 sa_family_t sa_family, __be16 port)
7681 {
7682         struct i40e_netdev_priv *np = netdev_priv(netdev);
7683         struct i40e_vsi *vsi = np->vsi;
7684         struct i40e_pf *pf = vsi->back;
7685         u8 next_idx;
7686         u8 idx;
7687
7688         if (sa_family == AF_INET6)
7689                 return;
7690
7691         idx = i40e_get_vxlan_port_idx(pf, port);
7692
7693         /* Check if port already exists */
7694         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7695                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
7696                 return;
7697         }
7698
7699         /* Now check if there is space to add the new port */
7700         next_idx = i40e_get_vxlan_port_idx(pf, 0);
7701
7702         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7703                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
7704                             ntohs(port));
7705                 return;
7706         }
7707
7708         /* New port: add it and mark its index in the bitmap */
7709         pf->vxlan_ports[next_idx] = port;
7710         pf->pending_vxlan_bitmap |= (1 << next_idx);
7711
7712         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7713 }
7714
7715 /**
7716  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
7717  * @netdev: This physical port's netdev
7718  * @sa_family: Socket Family that VXLAN is notifying us about
7719  * @port: UDP port number that VXLAN stopped listening to
7720  **/
7721 static void i40e_del_vxlan_port(struct net_device *netdev,
7722                                 sa_family_t sa_family, __be16 port)
7723 {
7724         struct i40e_netdev_priv *np = netdev_priv(netdev);
7725         struct i40e_vsi *vsi = np->vsi;
7726         struct i40e_pf *pf = vsi->back;
7727         u8 idx;
7728
7729         if (sa_family == AF_INET6)
7730                 return;
7731
7732         idx = i40e_get_vxlan_port_idx(pf, port);
7733
7734         /* Check if port already exists */
7735         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7736                 /* if port exists, set it to 0 (mark for deletion)
7737                  * and make it pending
7738                  */
7739                 pf->vxlan_ports[idx] = 0;
7740
7741                 pf->pending_vxlan_bitmap |= (1 << idx);
7742
7743                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7744         } else {
7745                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
7746                             ntohs(port));
7747         }
7748 }
7749
7750 #endif
7751 static int i40e_get_phys_port_id(struct net_device *netdev,
7752                                  struct netdev_phys_item_id *ppid)
7753 {
7754         struct i40e_netdev_priv *np = netdev_priv(netdev);
7755         struct i40e_pf *pf = np->vsi->back;
7756         struct i40e_hw *hw = &pf->hw;
7757
7758         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
7759                 return -EOPNOTSUPP;
7760
7761         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
7762         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
7763
7764         return 0;
7765 }
7766
7767 /**
7768  * i40e_ndo_fdb_add - add an entry to the hardware database
7769  * @ndm: the input from the stack
7770  * @tb: pointer to array of nladdr (unused)
7771  * @dev: the net device pointer
7772  * @addr: the MAC address entry being added
7773  * @flags: instructions from stack about fdb operation
7774  */
7775 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
7776                             struct net_device *dev,
7777                             const unsigned char *addr, u16 vid,
7778                             u16 flags)
7779 {
7780         struct i40e_netdev_priv *np = netdev_priv(dev);
7781         struct i40e_pf *pf = np->vsi->back;
7782         int err = 0;
7783
7784         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
7785                 return -EOPNOTSUPP;
7786
7787         if (vid) {
7788                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
7789                 return -EINVAL;
7790         }
7791
7792         /* Hardware does not support aging addresses so if a
7793          * ndm_state is given only allow permanent addresses
7794          */
7795         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
7796                 netdev_info(dev, "FDB only supports static addresses\n");
7797                 return -EINVAL;
7798         }
7799
7800         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
7801                 err = dev_uc_add_excl(dev, addr);
7802         else if (is_multicast_ether_addr(addr))
7803                 err = dev_mc_add_excl(dev, addr);
7804         else
7805                 err = -EINVAL;
7806
7807         /* Only return duplicate errors if NLM_F_EXCL is set */
7808         if (err == -EEXIST && !(flags & NLM_F_EXCL))
7809                 err = 0;
7810
7811         return err;
7812 }
7813
7814 #ifdef HAVE_BRIDGE_ATTRIBS
7815 /**
7816  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
7817  * @dev: the netdev being configured
7818  * @nlh: RTNL message
7819  *
7820  * Inserts a new hardware bridge if not already created and
7821  * enables the bridging mode requested (VEB or VEPA). If the
7822  * hardware bridge has already been inserted and the request
7823  * is to change the mode then that requires a PF reset to
7824  * allow rebuild of the components with required hardware
7825  * bridge mode enabled.
7826  **/
7827 static int i40e_ndo_bridge_setlink(struct net_device *dev,
7828                                    struct nlmsghdr *nlh)
7829 {
7830         struct i40e_netdev_priv *np = netdev_priv(dev);
7831         struct i40e_vsi *vsi = np->vsi;
7832         struct i40e_pf *pf = vsi->back;
7833         struct i40e_veb *veb = NULL;
7834         struct nlattr *attr, *br_spec;
7835         int i, rem;
7836
7837         /* Only for PF VSI for now */
7838         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
7839                 return -EOPNOTSUPP;
7840
7841         /* Find the HW bridge for PF VSI */
7842         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7843                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7844                         veb = pf->veb[i];
7845         }
7846
7847         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
7848
7849         nla_for_each_nested(attr, br_spec, rem) {
7850                 __u16 mode;
7851
7852                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
7853                         continue;
7854
7855                 mode = nla_get_u16(attr);
7856                 if ((mode != BRIDGE_MODE_VEPA) &&
7857                     (mode != BRIDGE_MODE_VEB))
7858                         return -EINVAL;
7859
7860                 /* Insert a new HW bridge */
7861                 if (!veb) {
7862                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
7863                                              vsi->tc_config.enabled_tc);
7864                         if (veb) {
7865                                 veb->bridge_mode = mode;
7866                                 i40e_config_bridge_mode(veb);
7867                         } else {
7868                                 /* No Bridge HW offload available */
7869                                 return -ENOENT;
7870                         }
7871                         break;
7872                 } else if (mode != veb->bridge_mode) {
7873                         /* Existing HW bridge but different mode needs reset */
7874                         veb->bridge_mode = mode;
7875                         i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7876                         break;
7877                 }
7878         }
7879
7880         return 0;
7881 }
7882
7883 /**
7884  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
7885  * @skb: skb buff
7886  * @pid: process id
7887  * @seq: RTNL message seq #
7888  * @dev: the netdev being configured
7889  * @filter_mask: unused
7890  *
7891  * Return the mode in which the hardware bridge is operating in
7892  * i.e VEB or VEPA.
7893  **/
7894 #ifdef HAVE_BRIDGE_FILTER
7895 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
7896                                    struct net_device *dev,
7897                                    u32 __always_unused filter_mask)
7898 #else
7899 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
7900                                    struct net_device *dev)
7901 #endif /* HAVE_BRIDGE_FILTER */
7902 {
7903         struct i40e_netdev_priv *np = netdev_priv(dev);
7904         struct i40e_vsi *vsi = np->vsi;
7905         struct i40e_pf *pf = vsi->back;
7906         struct i40e_veb *veb = NULL;
7907         int i;
7908
7909         /* Only for PF VSI for now */
7910         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
7911                 return -EOPNOTSUPP;
7912
7913         /* Find the HW bridge for the PF VSI */
7914         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7915                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7916                         veb = pf->veb[i];
7917         }
7918
7919         if (!veb)
7920                 return 0;
7921
7922         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode);
7923 }
7924 #endif /* HAVE_BRIDGE_ATTRIBS */
7925
7926 static const struct net_device_ops i40e_netdev_ops = {
7927         .ndo_open               = i40e_open,
7928         .ndo_stop               = i40e_close,
7929         .ndo_start_xmit         = i40e_lan_xmit_frame,
7930         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
7931         .ndo_set_rx_mode        = i40e_set_rx_mode,
7932         .ndo_validate_addr      = eth_validate_addr,
7933         .ndo_set_mac_address    = i40e_set_mac,
7934         .ndo_change_mtu         = i40e_change_mtu,
7935         .ndo_do_ioctl           = i40e_ioctl,
7936         .ndo_tx_timeout         = i40e_tx_timeout,
7937         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
7938         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
7939 #ifdef CONFIG_NET_POLL_CONTROLLER
7940         .ndo_poll_controller    = i40e_netpoll,
7941 #endif
7942         .ndo_setup_tc           = i40e_setup_tc,
7943 #ifdef I40E_FCOE
7944         .ndo_fcoe_enable        = i40e_fcoe_enable,
7945         .ndo_fcoe_disable       = i40e_fcoe_disable,
7946 #endif
7947         .ndo_set_features       = i40e_set_features,
7948         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
7949         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
7950         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
7951         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
7952         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
7953         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
7954 #ifdef CONFIG_I40E_VXLAN
7955         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
7956         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
7957 #endif
7958         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
7959         .ndo_fdb_add            = i40e_ndo_fdb_add,
7960 #ifdef HAVE_BRIDGE_ATTRIBS
7961         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
7962         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
7963 #endif /* HAVE_BRIDGE_ATTRIBS */
7964 };
7965
7966 /**
7967  * i40e_config_netdev - Setup the netdev flags
7968  * @vsi: the VSI being configured
7969  *
7970  * Returns 0 on success, negative value on failure
7971  **/
7972 static int i40e_config_netdev(struct i40e_vsi *vsi)
7973 {
7974         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
7975         struct i40e_pf *pf = vsi->back;
7976         struct i40e_hw *hw = &pf->hw;
7977         struct i40e_netdev_priv *np;
7978         struct net_device *netdev;
7979         u8 mac_addr[ETH_ALEN];
7980         int etherdev_size;
7981
7982         etherdev_size = sizeof(struct i40e_netdev_priv);
7983         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
7984         if (!netdev)
7985                 return -ENOMEM;
7986
7987         vsi->netdev = netdev;
7988         np = netdev_priv(netdev);
7989         np->vsi = vsi;
7990
7991         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
7992                                   NETIF_F_GSO_UDP_TUNNEL |
7993                                   NETIF_F_TSO;
7994
7995         netdev->features = NETIF_F_SG                  |
7996                            NETIF_F_IP_CSUM             |
7997                            NETIF_F_SCTP_CSUM           |
7998                            NETIF_F_HIGHDMA             |
7999                            NETIF_F_GSO_UDP_TUNNEL      |
8000                            NETIF_F_HW_VLAN_CTAG_TX     |
8001                            NETIF_F_HW_VLAN_CTAG_RX     |
8002                            NETIF_F_HW_VLAN_CTAG_FILTER |
8003                            NETIF_F_IPV6_CSUM           |
8004                            NETIF_F_TSO                 |
8005                            NETIF_F_TSO_ECN             |
8006                            NETIF_F_TSO6                |
8007                            NETIF_F_RXCSUM              |
8008                            NETIF_F_RXHASH              |
8009                            0;
8010
8011         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8012                 netdev->features |= NETIF_F_NTUPLE;
8013
8014         /* copy netdev features into list of user selectable features */
8015         netdev->hw_features |= netdev->features;
8016
8017         if (vsi->type == I40E_VSI_MAIN) {
8018                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8019                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8020                 /* The following steps are necessary to prevent reception
8021                  * of tagged packets - some older NVM configurations load a
8022                  * default a MAC-VLAN filter that accepts any tagged packet
8023                  * which must be replaced by a normal filter.
8024                  */
8025                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
8026                         i40e_add_filter(vsi, mac_addr,
8027                                         I40E_VLAN_ANY, false, true);
8028         } else {
8029                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8030                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8031                          pf->vsi[pf->lan_vsi]->netdev->name);
8032                 random_ether_addr(mac_addr);
8033                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8034         }
8035         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8036
8037         ether_addr_copy(netdev->dev_addr, mac_addr);
8038         ether_addr_copy(netdev->perm_addr, mac_addr);
8039         /* vlan gets same features (except vlan offload)
8040          * after any tweaks for specific VSI types
8041          */
8042         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8043                                                      NETIF_F_HW_VLAN_CTAG_RX |
8044                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8045         netdev->priv_flags |= IFF_UNICAST_FLT;
8046         netdev->priv_flags |= IFF_SUPP_NOFCS;
8047         /* Setup netdev TC information */
8048         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8049
8050         netdev->netdev_ops = &i40e_netdev_ops;
8051         netdev->watchdog_timeo = 5 * HZ;
8052         i40e_set_ethtool_ops(netdev);
8053 #ifdef I40E_FCOE
8054         i40e_fcoe_config_netdev(netdev, vsi);
8055 #endif
8056
8057         return 0;
8058 }
8059
8060 /**
8061  * i40e_vsi_delete - Delete a VSI from the switch
8062  * @vsi: the VSI being removed
8063  *
8064  * Returns 0 on success, negative value on failure
8065  **/
8066 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8067 {
8068         /* remove default VSI is not allowed */
8069         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8070                 return;
8071
8072         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8073 }
8074
8075 /**
8076  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8077  * @vsi: the VSI being queried
8078  *
8079  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8080  **/
8081 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8082 {
8083         struct i40e_veb *veb;
8084         struct i40e_pf *pf = vsi->back;
8085
8086         /* Uplink is not a bridge so default to VEB */
8087         if (vsi->veb_idx == I40E_NO_VEB)
8088                 return 1;
8089
8090         veb = pf->veb[vsi->veb_idx];
8091         /* Uplink is a bridge in VEPA mode */
8092         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8093                 return 0;
8094
8095         /* Uplink is a bridge in VEB mode */
8096         return 1;
8097 }
8098
8099 /**
8100  * i40e_add_vsi - Add a VSI to the switch
8101  * @vsi: the VSI being configured
8102  *
8103  * This initializes a VSI context depending on the VSI type to be added and
8104  * passes it down to the add_vsi aq command.
8105  **/
8106 static int i40e_add_vsi(struct i40e_vsi *vsi)
8107 {
8108         int ret = -ENODEV;
8109         struct i40e_mac_filter *f, *ftmp;
8110         struct i40e_pf *pf = vsi->back;
8111         struct i40e_hw *hw = &pf->hw;
8112         struct i40e_vsi_context ctxt;
8113         u8 enabled_tc = 0x1; /* TC0 enabled */
8114         int f_count = 0;
8115
8116         memset(&ctxt, 0, sizeof(ctxt));
8117         switch (vsi->type) {
8118         case I40E_VSI_MAIN:
8119                 /* The PF's main VSI is already setup as part of the
8120                  * device initialization, so we'll not bother with
8121                  * the add_vsi call, but we will retrieve the current
8122                  * VSI context.
8123                  */
8124                 ctxt.seid = pf->main_vsi_seid;
8125                 ctxt.pf_num = pf->hw.pf_id;
8126                 ctxt.vf_num = 0;
8127                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8128                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8129                 if (ret) {
8130                         dev_info(&pf->pdev->dev,
8131                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
8132                                  ret, pf->hw.aq.asq_last_status);
8133                         return -ENOENT;
8134                 }
8135                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
8136                 vsi->info.valid_sections = 0;
8137
8138                 vsi->seid = ctxt.seid;
8139                 vsi->id = ctxt.vsi_number;
8140
8141                 enabled_tc = i40e_pf_get_tc_map(pf);
8142
8143                 /* MFP mode setup queue map and update VSI */
8144                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8145                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8146                         memset(&ctxt, 0, sizeof(ctxt));
8147                         ctxt.seid = pf->main_vsi_seid;
8148                         ctxt.pf_num = pf->hw.pf_id;
8149                         ctxt.vf_num = 0;
8150                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8151                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8152                         if (ret) {
8153                                 dev_info(&pf->pdev->dev,
8154                                          "update vsi failed, aq_err=%d\n",
8155                                          pf->hw.aq.asq_last_status);
8156                                 ret = -ENOENT;
8157                                 goto err;
8158                         }
8159                         /* update the local VSI info queue map */
8160                         i40e_vsi_update_queue_map(vsi, &ctxt);
8161                         vsi->info.valid_sections = 0;
8162                 } else {
8163                         /* Default/Main VSI is only enabled for TC0
8164                          * reconfigure it to enable all TCs that are
8165                          * available on the port in SFP mode.
8166                          * For MFP case the iSCSI PF would use this
8167                          * flow to enable LAN+iSCSI TC.
8168                          */
8169                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8170                         if (ret) {
8171                                 dev_info(&pf->pdev->dev,
8172                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
8173                                          enabled_tc, ret,
8174                                          pf->hw.aq.asq_last_status);
8175                                 ret = -ENOENT;
8176                         }
8177                 }
8178                 break;
8179
8180         case I40E_VSI_FDIR:
8181                 ctxt.pf_num = hw->pf_id;
8182                 ctxt.vf_num = 0;
8183                 ctxt.uplink_seid = vsi->uplink_seid;
8184                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8185                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8186                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8187                         ctxt.info.valid_sections |=
8188                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8189                         ctxt.info.switch_id =
8190                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8191                 }
8192                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8193                 break;
8194
8195         case I40E_VSI_VMDQ2:
8196                 ctxt.pf_num = hw->pf_id;
8197                 ctxt.vf_num = 0;
8198                 ctxt.uplink_seid = vsi->uplink_seid;
8199                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8200                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8201
8202                 /* This VSI is connected to VEB so the switch_id
8203                  * should be set to zero by default.
8204                  */
8205                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8206                         ctxt.info.valid_sections |=
8207                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8208                         ctxt.info.switch_id =
8209                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8210                 }
8211
8212                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8213                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8214                 break;
8215
8216         case I40E_VSI_SRIOV:
8217                 ctxt.pf_num = hw->pf_id;
8218                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8219                 ctxt.uplink_seid = vsi->uplink_seid;
8220                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8221                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8222
8223                 /* This VSI is connected to VEB so the switch_id
8224                  * should be set to zero by default.
8225                  */
8226                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8227                         ctxt.info.valid_sections |=
8228                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8229                         ctxt.info.switch_id =
8230                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8231                 }
8232
8233                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8234                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8235                 if (pf->vf[vsi->vf_id].spoofchk) {
8236                         ctxt.info.valid_sections |=
8237                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8238                         ctxt.info.sec_flags |=
8239                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8240                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8241                 }
8242                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8243                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8244                 break;
8245
8246 #ifdef I40E_FCOE
8247         case I40E_VSI_FCOE:
8248                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8249                 if (ret) {
8250                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8251                         return ret;
8252                 }
8253                 break;
8254
8255 #endif /* I40E_FCOE */
8256         default:
8257                 return -ENODEV;
8258         }
8259
8260         if (vsi->type != I40E_VSI_MAIN) {
8261                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8262                 if (ret) {
8263                         dev_info(&vsi->back->pdev->dev,
8264                                  "add vsi failed, aq_err=%d\n",
8265                                  vsi->back->hw.aq.asq_last_status);
8266                         ret = -ENOENT;
8267                         goto err;
8268                 }
8269                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
8270                 vsi->info.valid_sections = 0;
8271                 vsi->seid = ctxt.seid;
8272                 vsi->id = ctxt.vsi_number;
8273         }
8274
8275         /* If macvlan filters already exist, force them to get loaded */
8276         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8277                 f->changed = true;
8278                 f_count++;
8279
8280                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8281                         struct i40e_aqc_remove_macvlan_element_data element;
8282
8283                         memset(&element, 0, sizeof(element));
8284                         ether_addr_copy(element.mac_addr, f->macaddr);
8285                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8286                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8287                                                      &element, 1, NULL);
8288                         if (ret) {
8289                                 /* some older FW has a different default */
8290                                 element.flags |=
8291                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8292                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8293                                                        &element, 1, NULL);
8294                         }
8295
8296                         i40e_aq_mac_address_write(hw,
8297                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8298                                                   f->macaddr, NULL);
8299                 }
8300         }
8301         if (f_count) {
8302                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8303                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8304         }
8305
8306         /* Update VSI BW information */
8307         ret = i40e_vsi_get_bw_info(vsi);
8308         if (ret) {
8309                 dev_info(&pf->pdev->dev,
8310                          "couldn't get vsi bw info, err %d, aq_err %d\n",
8311                          ret, pf->hw.aq.asq_last_status);
8312                 /* VSI is already added so not tearing that up */
8313                 ret = 0;
8314         }
8315
8316 err:
8317         return ret;
8318 }
8319
8320 /**
8321  * i40e_vsi_release - Delete a VSI and free its resources
8322  * @vsi: the VSI being removed
8323  *
8324  * Returns 0 on success or < 0 on error
8325  **/
8326 int i40e_vsi_release(struct i40e_vsi *vsi)
8327 {
8328         struct i40e_mac_filter *f, *ftmp;
8329         struct i40e_veb *veb = NULL;
8330         struct i40e_pf *pf;
8331         u16 uplink_seid;
8332         int i, n;
8333
8334         pf = vsi->back;
8335
8336         /* release of a VEB-owner or last VSI is not allowed */
8337         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8338                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8339                          vsi->seid, vsi->uplink_seid);
8340                 return -ENODEV;
8341         }
8342         if (vsi == pf->vsi[pf->lan_vsi] &&
8343             !test_bit(__I40E_DOWN, &pf->state)) {
8344                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8345                 return -ENODEV;
8346         }
8347
8348         uplink_seid = vsi->uplink_seid;
8349         if (vsi->type != I40E_VSI_SRIOV) {
8350                 if (vsi->netdev_registered) {
8351                         vsi->netdev_registered = false;
8352                         if (vsi->netdev) {
8353                                 /* results in a call to i40e_close() */
8354                                 unregister_netdev(vsi->netdev);
8355                         }
8356                 } else {
8357                         i40e_vsi_close(vsi);
8358                 }
8359                 i40e_vsi_disable_irq(vsi);
8360         }
8361
8362         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8363                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8364                                 f->is_vf, f->is_netdev);
8365         i40e_sync_vsi_filters(vsi);
8366
8367         i40e_vsi_delete(vsi);
8368         i40e_vsi_free_q_vectors(vsi);
8369         if (vsi->netdev) {
8370                 free_netdev(vsi->netdev);
8371                 vsi->netdev = NULL;
8372         }
8373         i40e_vsi_clear_rings(vsi);
8374         i40e_vsi_clear(vsi);
8375
8376         /* If this was the last thing on the VEB, except for the
8377          * controlling VSI, remove the VEB, which puts the controlling
8378          * VSI onto the next level down in the switch.
8379          *
8380          * Well, okay, there's one more exception here: don't remove
8381          * the orphan VEBs yet.  We'll wait for an explicit remove request
8382          * from up the network stack.
8383          */
8384         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8385                 if (pf->vsi[i] &&
8386                     pf->vsi[i]->uplink_seid == uplink_seid &&
8387                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8388                         n++;      /* count the VSIs */
8389                 }
8390         }
8391         for (i = 0; i < I40E_MAX_VEB; i++) {
8392                 if (!pf->veb[i])
8393                         continue;
8394                 if (pf->veb[i]->uplink_seid == uplink_seid)
8395                         n++;     /* count the VEBs */
8396                 if (pf->veb[i]->seid == uplink_seid)
8397                         veb = pf->veb[i];
8398         }
8399         if (n == 0 && veb && veb->uplink_seid != 0)
8400                 i40e_veb_release(veb);
8401
8402         return 0;
8403 }
8404
8405 /**
8406  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8407  * @vsi: ptr to the VSI
8408  *
8409  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8410  * corresponding SW VSI structure and initializes num_queue_pairs for the
8411  * newly allocated VSI.
8412  *
8413  * Returns 0 on success or negative on failure
8414  **/
8415 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8416 {
8417         int ret = -ENOENT;
8418         struct i40e_pf *pf = vsi->back;
8419
8420         if (vsi->q_vectors[0]) {
8421                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8422                          vsi->seid);
8423                 return -EEXIST;
8424         }
8425
8426         if (vsi->base_vector) {
8427                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8428                          vsi->seid, vsi->base_vector);
8429                 return -EEXIST;
8430         }
8431
8432         ret = i40e_vsi_alloc_q_vectors(vsi);
8433         if (ret) {
8434                 dev_info(&pf->pdev->dev,
8435                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8436                          vsi->num_q_vectors, vsi->seid, ret);
8437                 vsi->num_q_vectors = 0;
8438                 goto vector_setup_out;
8439         }
8440
8441         if (vsi->num_q_vectors)
8442                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8443                                                  vsi->num_q_vectors, vsi->idx);
8444         if (vsi->base_vector < 0) {
8445                 dev_info(&pf->pdev->dev,
8446                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8447                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8448                 i40e_vsi_free_q_vectors(vsi);
8449                 ret = -ENOENT;
8450                 goto vector_setup_out;
8451         }
8452
8453 vector_setup_out:
8454         return ret;
8455 }
8456
8457 /**
8458  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8459  * @vsi: pointer to the vsi.
8460  *
8461  * This re-allocates a vsi's queue resources.
8462  *
8463  * Returns pointer to the successfully allocated and configured VSI sw struct
8464  * on success, otherwise returns NULL on failure.
8465  **/
8466 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8467 {
8468         struct i40e_pf *pf = vsi->back;
8469         u8 enabled_tc;
8470         int ret;
8471
8472         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8473         i40e_vsi_clear_rings(vsi);
8474
8475         i40e_vsi_free_arrays(vsi, false);
8476         i40e_set_num_rings_in_vsi(vsi);
8477         ret = i40e_vsi_alloc_arrays(vsi, false);
8478         if (ret)
8479                 goto err_vsi;
8480
8481         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8482         if (ret < 0) {
8483                 dev_info(&pf->pdev->dev,
8484                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8485                          vsi->alloc_queue_pairs, vsi->seid, ret);
8486                 goto err_vsi;
8487         }
8488         vsi->base_queue = ret;
8489
8490         /* Update the FW view of the VSI. Force a reset of TC and queue
8491          * layout configurations.
8492          */
8493         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8494         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8495         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8496         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8497
8498         /* assign it some queues */
8499         ret = i40e_alloc_rings(vsi);
8500         if (ret)
8501                 goto err_rings;
8502
8503         /* map all of the rings to the q_vectors */
8504         i40e_vsi_map_rings_to_vectors(vsi);
8505         return vsi;
8506
8507 err_rings:
8508         i40e_vsi_free_q_vectors(vsi);
8509         if (vsi->netdev_registered) {
8510                 vsi->netdev_registered = false;
8511                 unregister_netdev(vsi->netdev);
8512                 free_netdev(vsi->netdev);
8513                 vsi->netdev = NULL;
8514         }
8515         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8516 err_vsi:
8517         i40e_vsi_clear(vsi);
8518         return NULL;
8519 }
8520
8521 /**
8522  * i40e_vsi_setup - Set up a VSI by a given type
8523  * @pf: board private structure
8524  * @type: VSI type
8525  * @uplink_seid: the switch element to link to
8526  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8527  *
8528  * This allocates the sw VSI structure and its queue resources, then add a VSI
8529  * to the identified VEB.
8530  *
8531  * Returns pointer to the successfully allocated and configure VSI sw struct on
8532  * success, otherwise returns NULL on failure.
8533  **/
8534 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8535                                 u16 uplink_seid, u32 param1)
8536 {
8537         struct i40e_vsi *vsi = NULL;
8538         struct i40e_veb *veb = NULL;
8539         int ret, i;
8540         int v_idx;
8541
8542         /* The requested uplink_seid must be either
8543          *     - the PF's port seid
8544          *              no VEB is needed because this is the PF
8545          *              or this is a Flow Director special case VSI
8546          *     - seid of an existing VEB
8547          *     - seid of a VSI that owns an existing VEB
8548          *     - seid of a VSI that doesn't own a VEB
8549          *              a new VEB is created and the VSI becomes the owner
8550          *     - seid of the PF VSI, which is what creates the first VEB
8551          *              this is a special case of the previous
8552          *
8553          * Find which uplink_seid we were given and create a new VEB if needed
8554          */
8555         for (i = 0; i < I40E_MAX_VEB; i++) {
8556                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8557                         veb = pf->veb[i];
8558                         break;
8559                 }
8560         }
8561
8562         if (!veb && uplink_seid != pf->mac_seid) {
8563
8564                 for (i = 0; i < pf->num_alloc_vsi; i++) {
8565                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8566                                 vsi = pf->vsi[i];
8567                                 break;
8568                         }
8569                 }
8570                 if (!vsi) {
8571                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8572                                  uplink_seid);
8573                         return NULL;
8574                 }
8575
8576                 if (vsi->uplink_seid == pf->mac_seid)
8577                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8578                                              vsi->tc_config.enabled_tc);
8579                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8580                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8581                                              vsi->tc_config.enabled_tc);
8582                 if (veb) {
8583                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
8584                                 dev_info(&vsi->back->pdev->dev,
8585                                          "%s: New VSI creation error, uplink seid of LAN VSI expected.\n",
8586                                          __func__);
8587                                 return NULL;
8588                         }
8589                         i40e_config_bridge_mode(veb);
8590                 }
8591                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8592                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8593                                 veb = pf->veb[i];
8594                 }
8595                 if (!veb) {
8596                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
8597                         return NULL;
8598                 }
8599
8600                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8601                 uplink_seid = veb->seid;
8602         }
8603
8604         /* get vsi sw struct */
8605         v_idx = i40e_vsi_mem_alloc(pf, type);
8606         if (v_idx < 0)
8607                 goto err_alloc;
8608         vsi = pf->vsi[v_idx];
8609         if (!vsi)
8610                 goto err_alloc;
8611         vsi->type = type;
8612         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
8613
8614         if (type == I40E_VSI_MAIN)
8615                 pf->lan_vsi = v_idx;
8616         else if (type == I40E_VSI_SRIOV)
8617                 vsi->vf_id = param1;
8618         /* assign it some queues */
8619         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
8620                                 vsi->idx);
8621         if (ret < 0) {
8622                 dev_info(&pf->pdev->dev,
8623                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8624                          vsi->alloc_queue_pairs, vsi->seid, ret);
8625                 goto err_vsi;
8626         }
8627         vsi->base_queue = ret;
8628
8629         /* get a VSI from the hardware */
8630         vsi->uplink_seid = uplink_seid;
8631         ret = i40e_add_vsi(vsi);
8632         if (ret)
8633                 goto err_vsi;
8634
8635         switch (vsi->type) {
8636         /* setup the netdev if needed */
8637         case I40E_VSI_MAIN:
8638         case I40E_VSI_VMDQ2:
8639         case I40E_VSI_FCOE:
8640                 ret = i40e_config_netdev(vsi);
8641                 if (ret)
8642                         goto err_netdev;
8643                 ret = register_netdev(vsi->netdev);
8644                 if (ret)
8645                         goto err_netdev;
8646                 vsi->netdev_registered = true;
8647                 netif_carrier_off(vsi->netdev);
8648 #ifdef CONFIG_I40E_DCB
8649                 /* Setup DCB netlink interface */
8650                 i40e_dcbnl_setup(vsi);
8651 #endif /* CONFIG_I40E_DCB */
8652                 /* fall through */
8653
8654         case I40E_VSI_FDIR:
8655                 /* set up vectors and rings if needed */
8656                 ret = i40e_vsi_setup_vectors(vsi);
8657                 if (ret)
8658                         goto err_msix;
8659
8660                 ret = i40e_alloc_rings(vsi);
8661                 if (ret)
8662                         goto err_rings;
8663
8664                 /* map all of the rings to the q_vectors */
8665                 i40e_vsi_map_rings_to_vectors(vsi);
8666
8667                 i40e_vsi_reset_stats(vsi);
8668                 break;
8669
8670         default:
8671                 /* no netdev or rings for the other VSI types */
8672                 break;
8673         }
8674
8675         return vsi;
8676
8677 err_rings:
8678         i40e_vsi_free_q_vectors(vsi);
8679 err_msix:
8680         if (vsi->netdev_registered) {
8681                 vsi->netdev_registered = false;
8682                 unregister_netdev(vsi->netdev);
8683                 free_netdev(vsi->netdev);
8684                 vsi->netdev = NULL;
8685         }
8686 err_netdev:
8687         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8688 err_vsi:
8689         i40e_vsi_clear(vsi);
8690 err_alloc:
8691         return NULL;
8692 }
8693
8694 /**
8695  * i40e_veb_get_bw_info - Query VEB BW information
8696  * @veb: the veb to query
8697  *
8698  * Query the Tx scheduler BW configuration data for given VEB
8699  **/
8700 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
8701 {
8702         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
8703         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
8704         struct i40e_pf *pf = veb->pf;
8705         struct i40e_hw *hw = &pf->hw;
8706         u32 tc_bw_max;
8707         int ret = 0;
8708         int i;
8709
8710         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
8711                                                   &bw_data, NULL);
8712         if (ret) {
8713                 dev_info(&pf->pdev->dev,
8714                          "query veb bw config failed, aq_err=%d\n",
8715                          hw->aq.asq_last_status);
8716                 goto out;
8717         }
8718
8719         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
8720                                                    &ets_data, NULL);
8721         if (ret) {
8722                 dev_info(&pf->pdev->dev,
8723                          "query veb bw ets config failed, aq_err=%d\n",
8724                          hw->aq.asq_last_status);
8725                 goto out;
8726         }
8727
8728         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
8729         veb->bw_max_quanta = ets_data.tc_bw_max;
8730         veb->is_abs_credits = bw_data.absolute_credits_enable;
8731         veb->enabled_tc = ets_data.tc_valid_bits;
8732         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
8733                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
8734         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
8735                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
8736                 veb->bw_tc_limit_credits[i] =
8737                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
8738                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
8739         }
8740
8741 out:
8742         return ret;
8743 }
8744
8745 /**
8746  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
8747  * @pf: board private structure
8748  *
8749  * On error: returns error code (negative)
8750  * On success: returns vsi index in PF (positive)
8751  **/
8752 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
8753 {
8754         int ret = -ENOENT;
8755         struct i40e_veb *veb;
8756         int i;
8757
8758         /* Need to protect the allocation of switch elements at the PF level */
8759         mutex_lock(&pf->switch_mutex);
8760
8761         /* VEB list may be fragmented if VEB creation/destruction has
8762          * been happening.  We can afford to do a quick scan to look
8763          * for any free slots in the list.
8764          *
8765          * find next empty veb slot, looping back around if necessary
8766          */
8767         i = 0;
8768         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
8769                 i++;
8770         if (i >= I40E_MAX_VEB) {
8771                 ret = -ENOMEM;
8772                 goto err_alloc_veb;  /* out of VEB slots! */
8773         }
8774
8775         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
8776         if (!veb) {
8777                 ret = -ENOMEM;
8778                 goto err_alloc_veb;
8779         }
8780         veb->pf = pf;
8781         veb->idx = i;
8782         veb->enabled_tc = 1;
8783
8784         pf->veb[i] = veb;
8785         ret = i;
8786 err_alloc_veb:
8787         mutex_unlock(&pf->switch_mutex);
8788         return ret;
8789 }
8790
8791 /**
8792  * i40e_switch_branch_release - Delete a branch of the switch tree
8793  * @branch: where to start deleting
8794  *
8795  * This uses recursion to find the tips of the branch to be
8796  * removed, deleting until we get back to and can delete this VEB.
8797  **/
8798 static void i40e_switch_branch_release(struct i40e_veb *branch)
8799 {
8800         struct i40e_pf *pf = branch->pf;
8801         u16 branch_seid = branch->seid;
8802         u16 veb_idx = branch->idx;
8803         int i;
8804
8805         /* release any VEBs on this VEB - RECURSION */
8806         for (i = 0; i < I40E_MAX_VEB; i++) {
8807                 if (!pf->veb[i])
8808                         continue;
8809                 if (pf->veb[i]->uplink_seid == branch->seid)
8810                         i40e_switch_branch_release(pf->veb[i]);
8811         }
8812
8813         /* Release the VSIs on this VEB, but not the owner VSI.
8814          *
8815          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
8816          *       the VEB itself, so don't use (*branch) after this loop.
8817          */
8818         for (i = 0; i < pf->num_alloc_vsi; i++) {
8819                 if (!pf->vsi[i])
8820                         continue;
8821                 if (pf->vsi[i]->uplink_seid == branch_seid &&
8822                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8823                         i40e_vsi_release(pf->vsi[i]);
8824                 }
8825         }
8826
8827         /* There's one corner case where the VEB might not have been
8828          * removed, so double check it here and remove it if needed.
8829          * This case happens if the veb was created from the debugfs
8830          * commands and no VSIs were added to it.
8831          */
8832         if (pf->veb[veb_idx])
8833                 i40e_veb_release(pf->veb[veb_idx]);
8834 }
8835
8836 /**
8837  * i40e_veb_clear - remove veb struct
8838  * @veb: the veb to remove
8839  **/
8840 static void i40e_veb_clear(struct i40e_veb *veb)
8841 {
8842         if (!veb)
8843                 return;
8844
8845         if (veb->pf) {
8846                 struct i40e_pf *pf = veb->pf;
8847
8848                 mutex_lock(&pf->switch_mutex);
8849                 if (pf->veb[veb->idx] == veb)
8850                         pf->veb[veb->idx] = NULL;
8851                 mutex_unlock(&pf->switch_mutex);
8852         }
8853
8854         kfree(veb);
8855 }
8856
8857 /**
8858  * i40e_veb_release - Delete a VEB and free its resources
8859  * @veb: the VEB being removed
8860  **/
8861 void i40e_veb_release(struct i40e_veb *veb)
8862 {
8863         struct i40e_vsi *vsi = NULL;
8864         struct i40e_pf *pf;
8865         int i, n = 0;
8866
8867         pf = veb->pf;
8868
8869         /* find the remaining VSI and check for extras */
8870         for (i = 0; i < pf->num_alloc_vsi; i++) {
8871                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
8872                         n++;
8873                         vsi = pf->vsi[i];
8874                 }
8875         }
8876         if (n != 1) {
8877                 dev_info(&pf->pdev->dev,
8878                          "can't remove VEB %d with %d VSIs left\n",
8879                          veb->seid, n);
8880                 return;
8881         }
8882
8883         /* move the remaining VSI to uplink veb */
8884         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
8885         if (veb->uplink_seid) {
8886                 vsi->uplink_seid = veb->uplink_seid;
8887                 if (veb->uplink_seid == pf->mac_seid)
8888                         vsi->veb_idx = I40E_NO_VEB;
8889                 else
8890                         vsi->veb_idx = veb->veb_idx;
8891         } else {
8892                 /* floating VEB */
8893                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
8894                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
8895         }
8896
8897         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
8898         i40e_veb_clear(veb);
8899 }
8900
8901 /**
8902  * i40e_add_veb - create the VEB in the switch
8903  * @veb: the VEB to be instantiated
8904  * @vsi: the controlling VSI
8905  **/
8906 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
8907 {
8908         bool is_default = false;
8909         bool is_cloud = false;
8910         int ret;
8911
8912         /* get a VEB from the hardware */
8913         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
8914                               veb->enabled_tc, is_default,
8915                               is_cloud, &veb->seid, NULL);
8916         if (ret) {
8917                 dev_info(&veb->pf->pdev->dev,
8918                          "couldn't add VEB, err %d, aq_err %d\n",
8919                          ret, veb->pf->hw.aq.asq_last_status);
8920                 return -EPERM;
8921         }
8922
8923         /* get statistics counter */
8924         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
8925                                          &veb->stats_idx, NULL, NULL, NULL);
8926         if (ret) {
8927                 dev_info(&veb->pf->pdev->dev,
8928                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
8929                          ret, veb->pf->hw.aq.asq_last_status);
8930                 return -EPERM;
8931         }
8932         ret = i40e_veb_get_bw_info(veb);
8933         if (ret) {
8934                 dev_info(&veb->pf->pdev->dev,
8935                          "couldn't get VEB bw info, err %d, aq_err %d\n",
8936                          ret, veb->pf->hw.aq.asq_last_status);
8937                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
8938                 return -ENOENT;
8939         }
8940
8941         vsi->uplink_seid = veb->seid;
8942         vsi->veb_idx = veb->idx;
8943         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8944
8945         return 0;
8946 }
8947
8948 /**
8949  * i40e_veb_setup - Set up a VEB
8950  * @pf: board private structure
8951  * @flags: VEB setup flags
8952  * @uplink_seid: the switch element to link to
8953  * @vsi_seid: the initial VSI seid
8954  * @enabled_tc: Enabled TC bit-map
8955  *
8956  * This allocates the sw VEB structure and links it into the switch
8957  * It is possible and legal for this to be a duplicate of an already
8958  * existing VEB.  It is also possible for both uplink and vsi seids
8959  * to be zero, in order to create a floating VEB.
8960  *
8961  * Returns pointer to the successfully allocated VEB sw struct on
8962  * success, otherwise returns NULL on failure.
8963  **/
8964 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
8965                                 u16 uplink_seid, u16 vsi_seid,
8966                                 u8 enabled_tc)
8967 {
8968         struct i40e_veb *veb, *uplink_veb = NULL;
8969         int vsi_idx, veb_idx;
8970         int ret;
8971
8972         /* if one seid is 0, the other must be 0 to create a floating relay */
8973         if ((uplink_seid == 0 || vsi_seid == 0) &&
8974             (uplink_seid + vsi_seid != 0)) {
8975                 dev_info(&pf->pdev->dev,
8976                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
8977                          uplink_seid, vsi_seid);
8978                 return NULL;
8979         }
8980
8981         /* make sure there is such a vsi and uplink */
8982         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
8983                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
8984                         break;
8985         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
8986                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
8987                          vsi_seid);
8988                 return NULL;
8989         }
8990
8991         if (uplink_seid && uplink_seid != pf->mac_seid) {
8992                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
8993                         if (pf->veb[veb_idx] &&
8994                             pf->veb[veb_idx]->seid == uplink_seid) {
8995                                 uplink_veb = pf->veb[veb_idx];
8996                                 break;
8997                         }
8998                 }
8999                 if (!uplink_veb) {
9000                         dev_info(&pf->pdev->dev,
9001                                  "uplink seid %d not found\n", uplink_seid);
9002                         return NULL;
9003                 }
9004         }
9005
9006         /* get veb sw struct */
9007         veb_idx = i40e_veb_mem_alloc(pf);
9008         if (veb_idx < 0)
9009                 goto err_alloc;
9010         veb = pf->veb[veb_idx];
9011         veb->flags = flags;
9012         veb->uplink_seid = uplink_seid;
9013         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9014         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9015
9016         /* create the VEB in the switch */
9017         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9018         if (ret)
9019                 goto err_veb;
9020         if (vsi_idx == pf->lan_vsi)
9021                 pf->lan_veb = veb->idx;
9022
9023         return veb;
9024
9025 err_veb:
9026         i40e_veb_clear(veb);
9027 err_alloc:
9028         return NULL;
9029 }
9030
9031 /**
9032  * i40e_setup_pf_switch_element - set pf vars based on switch type
9033  * @pf: board private structure
9034  * @ele: element we are building info from
9035  * @num_reported: total number of elements
9036  * @printconfig: should we print the contents
9037  *
9038  * helper function to assist in extracting a few useful SEID values.
9039  **/
9040 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9041                                 struct i40e_aqc_switch_config_element_resp *ele,
9042                                 u16 num_reported, bool printconfig)
9043 {
9044         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9045         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9046         u8 element_type = ele->element_type;
9047         u16 seid = le16_to_cpu(ele->seid);
9048
9049         if (printconfig)
9050                 dev_info(&pf->pdev->dev,
9051                          "type=%d seid=%d uplink=%d downlink=%d\n",
9052                          element_type, seid, uplink_seid, downlink_seid);
9053
9054         switch (element_type) {
9055         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9056                 pf->mac_seid = seid;
9057                 break;
9058         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9059                 /* Main VEB? */
9060                 if (uplink_seid != pf->mac_seid)
9061                         break;
9062                 if (pf->lan_veb == I40E_NO_VEB) {
9063                         int v;
9064
9065                         /* find existing or else empty VEB */
9066                         for (v = 0; v < I40E_MAX_VEB; v++) {
9067                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9068                                         pf->lan_veb = v;
9069                                         break;
9070                                 }
9071                         }
9072                         if (pf->lan_veb == I40E_NO_VEB) {
9073                                 v = i40e_veb_mem_alloc(pf);
9074                                 if (v < 0)
9075                                         break;
9076                                 pf->lan_veb = v;
9077                         }
9078                 }
9079
9080                 pf->veb[pf->lan_veb]->seid = seid;
9081                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9082                 pf->veb[pf->lan_veb]->pf = pf;
9083                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9084                 break;
9085         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9086                 if (num_reported != 1)
9087                         break;
9088                 /* This is immediately after a reset so we can assume this is
9089                  * the PF's VSI
9090                  */
9091                 pf->mac_seid = uplink_seid;
9092                 pf->pf_seid = downlink_seid;
9093                 pf->main_vsi_seid = seid;
9094                 if (printconfig)
9095                         dev_info(&pf->pdev->dev,
9096                                  "pf_seid=%d main_vsi_seid=%d\n",
9097                                  pf->pf_seid, pf->main_vsi_seid);
9098                 break;
9099         case I40E_SWITCH_ELEMENT_TYPE_PF:
9100         case I40E_SWITCH_ELEMENT_TYPE_VF:
9101         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9102         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9103         case I40E_SWITCH_ELEMENT_TYPE_PE:
9104         case I40E_SWITCH_ELEMENT_TYPE_PA:
9105                 /* ignore these for now */
9106                 break;
9107         default:
9108                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9109                          element_type, seid);
9110                 break;
9111         }
9112 }
9113
9114 /**
9115  * i40e_fetch_switch_configuration - Get switch config from firmware
9116  * @pf: board private structure
9117  * @printconfig: should we print the contents
9118  *
9119  * Get the current switch configuration from the device and
9120  * extract a few useful SEID values.
9121  **/
9122 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9123 {
9124         struct i40e_aqc_get_switch_config_resp *sw_config;
9125         u16 next_seid = 0;
9126         int ret = 0;
9127         u8 *aq_buf;
9128         int i;
9129
9130         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9131         if (!aq_buf)
9132                 return -ENOMEM;
9133
9134         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9135         do {
9136                 u16 num_reported, num_total;
9137
9138                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9139                                                 I40E_AQ_LARGE_BUF,
9140                                                 &next_seid, NULL);
9141                 if (ret) {
9142                         dev_info(&pf->pdev->dev,
9143                                  "get switch config failed %d aq_err=%x\n",
9144                                  ret, pf->hw.aq.asq_last_status);
9145                         kfree(aq_buf);
9146                         return -ENOENT;
9147                 }
9148
9149                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9150                 num_total = le16_to_cpu(sw_config->header.num_total);
9151
9152                 if (printconfig)
9153                         dev_info(&pf->pdev->dev,
9154                                  "header: %d reported %d total\n",
9155                                  num_reported, num_total);
9156
9157                 for (i = 0; i < num_reported; i++) {
9158                         struct i40e_aqc_switch_config_element_resp *ele =
9159                                 &sw_config->element[i];
9160
9161                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9162                                                      printconfig);
9163                 }
9164         } while (next_seid != 0);
9165
9166         kfree(aq_buf);
9167         return ret;
9168 }
9169
9170 /**
9171  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9172  * @pf: board private structure
9173  * @reinit: if the Main VSI needs to re-initialized.
9174  *
9175  * Returns 0 on success, negative value on failure
9176  **/
9177 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9178 {
9179         int ret;
9180
9181         /* find out what's out there already */
9182         ret = i40e_fetch_switch_configuration(pf, false);
9183         if (ret) {
9184                 dev_info(&pf->pdev->dev,
9185                          "couldn't fetch switch config, err %d, aq_err %d\n",
9186                          ret, pf->hw.aq.asq_last_status);
9187                 return ret;
9188         }
9189         i40e_pf_reset_stats(pf);
9190
9191         /* first time setup */
9192         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9193                 struct i40e_vsi *vsi = NULL;
9194                 u16 uplink_seid;
9195
9196                 /* Set up the PF VSI associated with the PF's main VSI
9197                  * that is already in the HW switch
9198                  */
9199                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9200                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9201                 else
9202                         uplink_seid = pf->mac_seid;
9203                 if (pf->lan_vsi == I40E_NO_VSI)
9204                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9205                 else if (reinit)
9206                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9207                 if (!vsi) {
9208                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9209                         i40e_fdir_teardown(pf);
9210                         return -EAGAIN;
9211                 }
9212         } else {
9213                 /* force a reset of TC and queue layout configurations */
9214                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9215                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9216                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9217                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9218         }
9219         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9220
9221         i40e_fdir_sb_setup(pf);
9222
9223         /* Setup static PF queue filter control settings */
9224         ret = i40e_setup_pf_filter_control(pf);
9225         if (ret) {
9226                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9227                          ret);
9228                 /* Failure here should not stop continuing other steps */
9229         }
9230
9231         /* enable RSS in the HW, even for only one queue, as the stack can use
9232          * the hash
9233          */
9234         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9235                 i40e_config_rss(pf);
9236
9237         /* fill in link information and enable LSE reporting */
9238         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9239         i40e_link_event(pf);
9240
9241         /* Initialize user-specific link properties */
9242         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9243                                   I40E_AQ_AN_COMPLETED) ? true : false);
9244
9245         i40e_ptp_init(pf);
9246
9247         return ret;
9248 }
9249
9250 /**
9251  * i40e_determine_queue_usage - Work out queue distribution
9252  * @pf: board private structure
9253  **/
9254 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9255 {
9256         int queues_left;
9257
9258         pf->num_lan_qps = 0;
9259 #ifdef I40E_FCOE
9260         pf->num_fcoe_qps = 0;
9261 #endif
9262
9263         /* Find the max queues to be put into basic use.  We'll always be
9264          * using TC0, whether or not DCB is running, and TC0 will get the
9265          * big RSS set.
9266          */
9267         queues_left = pf->hw.func_caps.num_tx_qp;
9268
9269         if ((queues_left == 1) ||
9270             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9271                 /* one qp for PF, no queues for anything else */
9272                 queues_left = 0;
9273                 pf->rss_size = pf->num_lan_qps = 1;
9274
9275                 /* make sure all the fancies are disabled */
9276                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9277 #ifdef I40E_FCOE
9278                                I40E_FLAG_FCOE_ENABLED   |
9279 #endif
9280                                I40E_FLAG_FD_SB_ENABLED  |
9281                                I40E_FLAG_FD_ATR_ENABLED |
9282                                I40E_FLAG_DCB_CAPABLE    |
9283                                I40E_FLAG_SRIOV_ENABLED  |
9284                                I40E_FLAG_VMDQ_ENABLED);
9285         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
9286                                   I40E_FLAG_FD_SB_ENABLED |
9287                                   I40E_FLAG_FD_ATR_ENABLED |
9288                                   I40E_FLAG_DCB_CAPABLE))) {
9289                 /* one qp for PF */
9290                 pf->rss_size = pf->num_lan_qps = 1;
9291                 queues_left -= pf->num_lan_qps;
9292
9293                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9294 #ifdef I40E_FCOE
9295                                I40E_FLAG_FCOE_ENABLED   |
9296 #endif
9297                                I40E_FLAG_FD_SB_ENABLED  |
9298                                I40E_FLAG_FD_ATR_ENABLED |
9299                                I40E_FLAG_DCB_ENABLED    |
9300                                I40E_FLAG_VMDQ_ENABLED);
9301         } else {
9302                 /* Not enough queues for all TCs */
9303                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9304                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9305                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9306                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
9307                 }
9308                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
9309                                         num_online_cpus());
9310                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
9311                                         pf->hw.func_caps.num_tx_qp);
9312
9313                 queues_left -= pf->num_lan_qps;
9314         }
9315
9316 #ifdef I40E_FCOE
9317         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
9318                 if (I40E_DEFAULT_FCOE <= queues_left) {
9319                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
9320                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
9321                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
9322                 } else {
9323                         pf->num_fcoe_qps = 0;
9324                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
9325                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9326                 }
9327
9328                 queues_left -= pf->num_fcoe_qps;
9329         }
9330
9331 #endif
9332         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9333                 if (queues_left > 1) {
9334                         queues_left -= 1; /* save 1 queue for FD */
9335                 } else {
9336                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9337                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9338                 }
9339         }
9340
9341         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9342             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9343                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9344                                         (queues_left / pf->num_vf_qps));
9345                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9346         }
9347
9348         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9349             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9350                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9351                                           (queues_left / pf->num_vmdq_qps));
9352                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9353         }
9354
9355         pf->queues_left = queues_left;
9356 #ifdef I40E_FCOE
9357         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9358 #endif
9359 }
9360
9361 /**
9362  * i40e_setup_pf_filter_control - Setup PF static filter control
9363  * @pf: PF to be setup
9364  *
9365  * i40e_setup_pf_filter_control sets up a pf's initial filter control
9366  * settings. If PE/FCoE are enabled then it will also set the per PF
9367  * based filter sizes required for them. It also enables Flow director,
9368  * ethertype and macvlan type filter settings for the pf.
9369  *
9370  * Returns 0 on success, negative on failure
9371  **/
9372 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9373 {
9374         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9375
9376         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9377
9378         /* Flow Director is enabled */
9379         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9380                 settings->enable_fdir = true;
9381
9382         /* Ethtype and MACVLAN filters enabled for PF */
9383         settings->enable_ethtype = true;
9384         settings->enable_macvlan = true;
9385
9386         if (i40e_set_filter_control(&pf->hw, settings))
9387                 return -ENOENT;
9388
9389         return 0;
9390 }
9391
9392 #define INFO_STRING_LEN 255
9393 static void i40e_print_features(struct i40e_pf *pf)
9394 {
9395         struct i40e_hw *hw = &pf->hw;
9396         char *buf, *string;
9397
9398         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9399         if (!string) {
9400                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9401                 return;
9402         }
9403
9404         buf = string;
9405
9406         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9407 #ifdef CONFIG_PCI_IOV
9408         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9409 #endif
9410         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9411                        pf->hw.func_caps.num_vsis,
9412                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9413                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9414
9415         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9416                 buf += sprintf(buf, "RSS ");
9417         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9418                 buf += sprintf(buf, "FD_ATR ");
9419         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9420                 buf += sprintf(buf, "FD_SB ");
9421                 buf += sprintf(buf, "NTUPLE ");
9422         }
9423         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9424                 buf += sprintf(buf, "DCB ");
9425         if (pf->flags & I40E_FLAG_PTP)
9426                 buf += sprintf(buf, "PTP ");
9427 #ifdef I40E_FCOE
9428         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9429                 buf += sprintf(buf, "FCOE ");
9430 #endif
9431
9432         BUG_ON(buf > (string + INFO_STRING_LEN));
9433         dev_info(&pf->pdev->dev, "%s\n", string);
9434         kfree(string);
9435 }
9436
9437 /**
9438  * i40e_probe - Device initialization routine
9439  * @pdev: PCI device information struct
9440  * @ent: entry in i40e_pci_tbl
9441  *
9442  * i40e_probe initializes a pf identified by a pci_dev structure.
9443  * The OS initialization, configuring of the pf private structure,
9444  * and a hardware reset occur.
9445  *
9446  * Returns 0 on success, negative on failure
9447  **/
9448 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9449 {
9450         struct i40e_aq_get_phy_abilities_resp abilities;
9451         unsigned long ioremap_len;
9452         struct i40e_pf *pf;
9453         struct i40e_hw *hw;
9454         static u16 pfs_found;
9455         u16 link_status;
9456         int err = 0;
9457         u32 len;
9458         u32 i;
9459
9460         err = pci_enable_device_mem(pdev);
9461         if (err)
9462                 return err;
9463
9464         /* set up for high or low dma */
9465         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9466         if (err) {
9467                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9468                 if (err) {
9469                         dev_err(&pdev->dev,
9470                                 "DMA configuration failed: 0x%x\n", err);
9471                         goto err_dma;
9472                 }
9473         }
9474
9475         /* set up pci connections */
9476         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9477                                            IORESOURCE_MEM), i40e_driver_name);
9478         if (err) {
9479                 dev_info(&pdev->dev,
9480                          "pci_request_selected_regions failed %d\n", err);
9481                 goto err_pci_reg;
9482         }
9483
9484         pci_enable_pcie_error_reporting(pdev);
9485         pci_set_master(pdev);
9486
9487         /* Now that we have a PCI connection, we need to do the
9488          * low level device setup.  This is primarily setting up
9489          * the Admin Queue structures and then querying for the
9490          * device's current profile information.
9491          */
9492         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9493         if (!pf) {
9494                 err = -ENOMEM;
9495                 goto err_pf_alloc;
9496         }
9497         pf->next_vsi = 0;
9498         pf->pdev = pdev;
9499         set_bit(__I40E_DOWN, &pf->state);
9500
9501         hw = &pf->hw;
9502         hw->back = pf;
9503
9504         ioremap_len = min_t(unsigned long, pci_resource_len(pdev, 0),
9505                             I40E_MAX_CSR_SPACE);
9506
9507         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), ioremap_len);
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         i40e_verify_eeprom(pf);
9586
9587         /* Rev 0 hardware was never productized */
9588         if (hw->revision_id < 1)
9589                 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");
9590
9591         i40e_clear_pxe_mode(hw);
9592         err = i40e_get_capabilities(pf);
9593         if (err)
9594                 goto err_adminq_setup;
9595
9596         err = i40e_sw_init(pf);
9597         if (err) {
9598                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
9599                 goto err_sw_init;
9600         }
9601
9602         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
9603                                 hw->func_caps.num_rx_qp,
9604                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
9605         if (err) {
9606                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
9607                 goto err_init_lan_hmc;
9608         }
9609
9610         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
9611         if (err) {
9612                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
9613                 err = -ENOENT;
9614                 goto err_configure_lan_hmc;
9615         }
9616
9617         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
9618          * Ignore error return codes because if it was already disabled via
9619          * hardware settings this will fail
9620          */
9621         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
9622             (pf->hw.aq.fw_maj_ver < 4)) {
9623                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
9624                 i40e_aq_stop_lldp(hw, true, NULL);
9625         }
9626
9627         i40e_get_mac_addr(hw, hw->mac.addr);
9628         if (!is_valid_ether_addr(hw->mac.addr)) {
9629                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
9630                 err = -EIO;
9631                 goto err_mac_addr;
9632         }
9633         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
9634         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
9635         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
9636         if (is_valid_ether_addr(hw->mac.port_addr))
9637                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
9638 #ifdef I40E_FCOE
9639         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
9640         if (err)
9641                 dev_info(&pdev->dev,
9642                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
9643         if (!is_valid_ether_addr(hw->mac.san_addr)) {
9644                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
9645                          hw->mac.san_addr);
9646                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
9647         }
9648         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
9649 #endif /* I40E_FCOE */
9650
9651         pci_set_drvdata(pdev, pf);
9652         pci_save_state(pdev);
9653 #ifdef CONFIG_I40E_DCB
9654         err = i40e_init_pf_dcb(pf);
9655         if (err) {
9656                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
9657                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9658                 /* Continue without DCB enabled */
9659         }
9660 #endif /* CONFIG_I40E_DCB */
9661
9662         /* set up periodic task facility */
9663         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
9664         pf->service_timer_period = HZ;
9665
9666         INIT_WORK(&pf->service_task, i40e_service_task);
9667         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
9668         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
9669         pf->link_check_timeout = jiffies;
9670
9671         /* WoL defaults to disabled */
9672         pf->wol_en = false;
9673         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
9674
9675         /* set up the main switch operations */
9676         i40e_determine_queue_usage(pf);
9677         i40e_init_interrupt_scheme(pf);
9678
9679         /* The number of VSIs reported by the FW is the minimum guaranteed
9680          * to us; HW supports far more and we share the remaining pool with
9681          * the other PFs. We allocate space for more than the guarantee with
9682          * the understanding that we might not get them all later.
9683          */
9684         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
9685                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
9686         else
9687                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
9688
9689         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
9690         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
9691         pf->vsi = kzalloc(len, GFP_KERNEL);
9692         if (!pf->vsi) {
9693                 err = -ENOMEM;
9694                 goto err_switch_setup;
9695         }
9696
9697         err = i40e_setup_pf_switch(pf, false);
9698         if (err) {
9699                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
9700                 goto err_vsis;
9701         }
9702         /* if FDIR VSI was set up, start it now */
9703         for (i = 0; i < pf->num_alloc_vsi; i++) {
9704                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
9705                         i40e_vsi_open(pf->vsi[i]);
9706                         break;
9707                 }
9708         }
9709
9710         /* driver is only interested in link up/down and module qualification
9711          * reports from firmware
9712          */
9713         err = i40e_aq_set_phy_int_mask(&pf->hw,
9714                                        I40E_AQ_EVENT_LINK_UPDOWN |
9715                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
9716         if (err)
9717                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", err);
9718
9719         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
9720             (pf->hw.aq.fw_maj_ver < 4)) {
9721                 msleep(75);
9722                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
9723                 if (err)
9724                         dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
9725                                  pf->hw.aq.asq_last_status);
9726         }
9727         /* The main driver is (mostly) up and happy. We need to set this state
9728          * before setting up the misc vector or we get a race and the vector
9729          * ends up disabled forever.
9730          */
9731         clear_bit(__I40E_DOWN, &pf->state);
9732
9733         /* In case of MSIX we are going to setup the misc vector right here
9734          * to handle admin queue events etc. In case of legacy and MSI
9735          * the misc functionality and queue processing is combined in
9736          * the same vector and that gets setup at open.
9737          */
9738         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9739                 err = i40e_setup_misc_vector(pf);
9740                 if (err) {
9741                         dev_info(&pdev->dev,
9742                                  "setup of misc vector failed: %d\n", err);
9743                         goto err_vsis;
9744                 }
9745         }
9746
9747 #ifdef CONFIG_PCI_IOV
9748         /* prep for VF support */
9749         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9750             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
9751             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
9752                 u32 val;
9753
9754                 /* disable link interrupts for VFs */
9755                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
9756                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
9757                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
9758                 i40e_flush(hw);
9759
9760                 if (pci_num_vf(pdev)) {
9761                         dev_info(&pdev->dev,
9762                                  "Active VFs found, allocating resources.\n");
9763                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
9764                         if (err)
9765                                 dev_info(&pdev->dev,
9766                                          "Error %d allocating resources for existing VFs\n",
9767                                          err);
9768                 }
9769         }
9770 #endif /* CONFIG_PCI_IOV */
9771
9772         pfs_found++;
9773
9774         i40e_dbg_pf_init(pf);
9775
9776         /* tell the firmware that we're starting */
9777         i40e_send_version(pf);
9778
9779         /* since everything's happy, start the service_task timer */
9780         mod_timer(&pf->service_timer,
9781                   round_jiffies(jiffies + pf->service_timer_period));
9782
9783 #ifdef I40E_FCOE
9784         /* create FCoE interface */
9785         i40e_fcoe_vsi_setup(pf);
9786
9787 #endif
9788         /* Get the negotiated link width and speed from PCI config space */
9789         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
9790
9791         i40e_set_pci_config_data(hw, link_status);
9792
9793         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
9794                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
9795                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
9796                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
9797                  "Unknown"),
9798                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
9799                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
9800                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
9801                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
9802                  "Unknown"));
9803
9804         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
9805             hw->bus.speed < i40e_bus_speed_8000) {
9806                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
9807                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
9808         }
9809
9810         /* get the requested speeds from the fw */
9811         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
9812         if (err)
9813                 dev_info(&pf->pdev->dev, "get phy abilities failed, aq_err %d, advertised speed settings may not be correct\n",
9814                          err);
9815         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
9816
9817         /* print a string summarizing features */
9818         i40e_print_features(pf);
9819
9820         return 0;
9821
9822         /* Unwind what we've done if something failed in the setup */
9823 err_vsis:
9824         set_bit(__I40E_DOWN, &pf->state);
9825         i40e_clear_interrupt_scheme(pf);
9826         kfree(pf->vsi);
9827 err_switch_setup:
9828         i40e_reset_interrupt_capability(pf);
9829         del_timer_sync(&pf->service_timer);
9830 err_mac_addr:
9831 err_configure_lan_hmc:
9832         (void)i40e_shutdown_lan_hmc(hw);
9833 err_init_lan_hmc:
9834         kfree(pf->qp_pile);
9835 err_sw_init:
9836 err_adminq_setup:
9837         (void)i40e_shutdown_adminq(hw);
9838 err_pf_reset:
9839         iounmap(hw->hw_addr);
9840 err_ioremap:
9841         kfree(pf);
9842 err_pf_alloc:
9843         pci_disable_pcie_error_reporting(pdev);
9844         pci_release_selected_regions(pdev,
9845                                      pci_select_bars(pdev, IORESOURCE_MEM));
9846 err_pci_reg:
9847 err_dma:
9848         pci_disable_device(pdev);
9849         return err;
9850 }
9851
9852 /**
9853  * i40e_remove - Device removal routine
9854  * @pdev: PCI device information struct
9855  *
9856  * i40e_remove is called by the PCI subsystem to alert the driver
9857  * that is should release a PCI device.  This could be caused by a
9858  * Hot-Plug event, or because the driver is going to be removed from
9859  * memory.
9860  **/
9861 static void i40e_remove(struct pci_dev *pdev)
9862 {
9863         struct i40e_pf *pf = pci_get_drvdata(pdev);
9864         i40e_status ret_code;
9865         int i;
9866
9867         i40e_dbg_pf_exit(pf);
9868
9869         i40e_ptp_stop(pf);
9870
9871         /* no more scheduling of any task */
9872         set_bit(__I40E_DOWN, &pf->state);
9873         del_timer_sync(&pf->service_timer);
9874         cancel_work_sync(&pf->service_task);
9875         i40e_fdir_teardown(pf);
9876
9877         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
9878                 i40e_free_vfs(pf);
9879                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
9880         }
9881
9882         i40e_fdir_teardown(pf);
9883
9884         /* If there is a switch structure or any orphans, remove them.
9885          * This will leave only the PF's VSI remaining.
9886          */
9887         for (i = 0; i < I40E_MAX_VEB; i++) {
9888                 if (!pf->veb[i])
9889                         continue;
9890
9891                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
9892                     pf->veb[i]->uplink_seid == 0)
9893                         i40e_switch_branch_release(pf->veb[i]);
9894         }
9895
9896         /* Now we can shutdown the PF's VSI, just before we kill
9897          * adminq and hmc.
9898          */
9899         if (pf->vsi[pf->lan_vsi])
9900                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
9901
9902         /* shutdown and destroy the HMC */
9903         if (pf->hw.hmc.hmc_obj) {
9904                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
9905                 if (ret_code)
9906                         dev_warn(&pdev->dev,
9907                                  "Failed to destroy the HMC resources: %d\n",
9908                                  ret_code);
9909         }
9910
9911         /* shutdown the adminq */
9912         ret_code = i40e_shutdown_adminq(&pf->hw);
9913         if (ret_code)
9914                 dev_warn(&pdev->dev,
9915                          "Failed to destroy the Admin Queue resources: %d\n",
9916                          ret_code);
9917
9918         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
9919         i40e_clear_interrupt_scheme(pf);
9920         for (i = 0; i < pf->num_alloc_vsi; i++) {
9921                 if (pf->vsi[i]) {
9922                         i40e_vsi_clear_rings(pf->vsi[i]);
9923                         i40e_vsi_clear(pf->vsi[i]);
9924                         pf->vsi[i] = NULL;
9925                 }
9926         }
9927
9928         for (i = 0; i < I40E_MAX_VEB; i++) {
9929                 kfree(pf->veb[i]);
9930                 pf->veb[i] = NULL;
9931         }
9932
9933         kfree(pf->qp_pile);
9934         kfree(pf->vsi);
9935
9936         iounmap(pf->hw.hw_addr);
9937         kfree(pf);
9938         pci_release_selected_regions(pdev,
9939                                      pci_select_bars(pdev, IORESOURCE_MEM));
9940
9941         pci_disable_pcie_error_reporting(pdev);
9942         pci_disable_device(pdev);
9943 }
9944
9945 /**
9946  * i40e_pci_error_detected - warning that something funky happened in PCI land
9947  * @pdev: PCI device information struct
9948  *
9949  * Called to warn that something happened and the error handling steps
9950  * are in progress.  Allows the driver to quiesce things, be ready for
9951  * remediation.
9952  **/
9953 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
9954                                                 enum pci_channel_state error)
9955 {
9956         struct i40e_pf *pf = pci_get_drvdata(pdev);
9957
9958         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
9959
9960         /* shutdown all operations */
9961         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
9962                 rtnl_lock();
9963                 i40e_prep_for_reset(pf);
9964                 rtnl_unlock();
9965         }
9966
9967         /* Request a slot reset */
9968         return PCI_ERS_RESULT_NEED_RESET;
9969 }
9970
9971 /**
9972  * i40e_pci_error_slot_reset - a PCI slot reset just happened
9973  * @pdev: PCI device information struct
9974  *
9975  * Called to find if the driver can work with the device now that
9976  * the pci slot has been reset.  If a basic connection seems good
9977  * (registers are readable and have sane content) then return a
9978  * happy little PCI_ERS_RESULT_xxx.
9979  **/
9980 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
9981 {
9982         struct i40e_pf *pf = pci_get_drvdata(pdev);
9983         pci_ers_result_t result;
9984         int err;
9985         u32 reg;
9986
9987         dev_info(&pdev->dev, "%s\n", __func__);
9988         if (pci_enable_device_mem(pdev)) {
9989                 dev_info(&pdev->dev,
9990                          "Cannot re-enable PCI device after reset.\n");
9991                 result = PCI_ERS_RESULT_DISCONNECT;
9992         } else {
9993                 pci_set_master(pdev);
9994                 pci_restore_state(pdev);
9995                 pci_save_state(pdev);
9996                 pci_wake_from_d3(pdev, false);
9997
9998                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
9999                 if (reg == 0)
10000                         result = PCI_ERS_RESULT_RECOVERED;
10001                 else
10002                         result = PCI_ERS_RESULT_DISCONNECT;
10003         }
10004
10005         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10006         if (err) {
10007                 dev_info(&pdev->dev,
10008                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10009                          err);
10010                 /* non-fatal, continue */
10011         }
10012
10013         return result;
10014 }
10015
10016 /**
10017  * i40e_pci_error_resume - restart operations after PCI error recovery
10018  * @pdev: PCI device information struct
10019  *
10020  * Called to allow the driver to bring things back up after PCI error
10021  * and/or reset recovery has finished.
10022  **/
10023 static void i40e_pci_error_resume(struct pci_dev *pdev)
10024 {
10025         struct i40e_pf *pf = pci_get_drvdata(pdev);
10026
10027         dev_info(&pdev->dev, "%s\n", __func__);
10028         if (test_bit(__I40E_SUSPENDED, &pf->state))
10029                 return;
10030
10031         rtnl_lock();
10032         i40e_handle_reset_warning(pf);
10033         rtnl_lock();
10034 }
10035
10036 /**
10037  * i40e_shutdown - PCI callback for shutting down
10038  * @pdev: PCI device information struct
10039  **/
10040 static void i40e_shutdown(struct pci_dev *pdev)
10041 {
10042         struct i40e_pf *pf = pci_get_drvdata(pdev);
10043         struct i40e_hw *hw = &pf->hw;
10044
10045         set_bit(__I40E_SUSPENDED, &pf->state);
10046         set_bit(__I40E_DOWN, &pf->state);
10047         rtnl_lock();
10048         i40e_prep_for_reset(pf);
10049         rtnl_unlock();
10050
10051         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10052         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10053
10054         i40e_clear_interrupt_scheme(pf);
10055
10056         if (system_state == SYSTEM_POWER_OFF) {
10057                 pci_wake_from_d3(pdev, pf->wol_en);
10058                 pci_set_power_state(pdev, PCI_D3hot);
10059         }
10060 }
10061
10062 #ifdef CONFIG_PM
10063 /**
10064  * i40e_suspend - PCI callback for moving to D3
10065  * @pdev: PCI device information struct
10066  **/
10067 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10068 {
10069         struct i40e_pf *pf = pci_get_drvdata(pdev);
10070         struct i40e_hw *hw = &pf->hw;
10071
10072         set_bit(__I40E_SUSPENDED, &pf->state);
10073         set_bit(__I40E_DOWN, &pf->state);
10074         del_timer_sync(&pf->service_timer);
10075         cancel_work_sync(&pf->service_task);
10076         rtnl_lock();
10077         i40e_prep_for_reset(pf);
10078         rtnl_unlock();
10079
10080         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10081         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10082
10083         pci_wake_from_d3(pdev, pf->wol_en);
10084         pci_set_power_state(pdev, PCI_D3hot);
10085
10086         return 0;
10087 }
10088
10089 /**
10090  * i40e_resume - PCI callback for waking up from D3
10091  * @pdev: PCI device information struct
10092  **/
10093 static int i40e_resume(struct pci_dev *pdev)
10094 {
10095         struct i40e_pf *pf = pci_get_drvdata(pdev);
10096         u32 err;
10097
10098         pci_set_power_state(pdev, PCI_D0);
10099         pci_restore_state(pdev);
10100         /* pci_restore_state() clears dev->state_saves, so
10101          * call pci_save_state() again to restore it.
10102          */
10103         pci_save_state(pdev);
10104
10105         err = pci_enable_device_mem(pdev);
10106         if (err) {
10107                 dev_err(&pdev->dev,
10108                         "%s: Cannot enable PCI device from suspend\n",
10109                         __func__);
10110                 return err;
10111         }
10112         pci_set_master(pdev);
10113
10114         /* no wakeup events while running */
10115         pci_wake_from_d3(pdev, false);
10116
10117         /* handling the reset will rebuild the device state */
10118         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10119                 clear_bit(__I40E_DOWN, &pf->state);
10120                 rtnl_lock();
10121                 i40e_reset_and_rebuild(pf, false);
10122                 rtnl_unlock();
10123         }
10124
10125         return 0;
10126 }
10127
10128 #endif
10129 static const struct pci_error_handlers i40e_err_handler = {
10130         .error_detected = i40e_pci_error_detected,
10131         .slot_reset = i40e_pci_error_slot_reset,
10132         .resume = i40e_pci_error_resume,
10133 };
10134
10135 static struct pci_driver i40e_driver = {
10136         .name     = i40e_driver_name,
10137         .id_table = i40e_pci_tbl,
10138         .probe    = i40e_probe,
10139         .remove   = i40e_remove,
10140 #ifdef CONFIG_PM
10141         .suspend  = i40e_suspend,
10142         .resume   = i40e_resume,
10143 #endif
10144         .shutdown = i40e_shutdown,
10145         .err_handler = &i40e_err_handler,
10146         .sriov_configure = i40e_pci_sriov_configure,
10147 };
10148
10149 /**
10150  * i40e_init_module - Driver registration routine
10151  *
10152  * i40e_init_module is the first routine called when the driver is
10153  * loaded. All it does is register with the PCI subsystem.
10154  **/
10155 static int __init i40e_init_module(void)
10156 {
10157         pr_info("%s: %s - version %s\n", i40e_driver_name,
10158                 i40e_driver_string, i40e_driver_version_str);
10159         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10160
10161 #if IS_ENABLED(CONFIG_I40E_CONFIGFS_FS)
10162         i40e_configfs_init();
10163 #endif /* CONFIG_I40E_CONFIGFS_FS */
10164         i40e_dbg_init();
10165         return pci_register_driver(&i40e_driver);
10166 }
10167 module_init(i40e_init_module);
10168
10169 /**
10170  * i40e_exit_module - Driver exit cleanup routine
10171  *
10172  * i40e_exit_module is called just before the driver is removed
10173  * from memory.
10174  **/
10175 static void __exit i40e_exit_module(void)
10176 {
10177         pci_unregister_driver(&i40e_driver);
10178         i40e_dbg_exit();
10179 #if IS_ENABLED(CONFIG_I40E_CONFIGFS_FS)
10180         i40e_configfs_exit();
10181 #endif /* CONFIG_I40E_CONFIGFS_FS */
10182 }
10183 module_exit(i40e_exit_module);