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 12
  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 next higher power-of-2 of num 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 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5349 {
5350         u32 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 total FD filters programmed for this PF
5359  * @pf: board private structure
5360  **/
5361 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5362 {
5363         u32 val, fcnt_prog;
5364
5365         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5366         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5367                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5368                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5369         return fcnt_prog;
5370 }
5371
5372 /**
5373  * i40e_get_global_fd_count - Get total FD filters programmed on device
5374  * @pf: board private structure
5375  **/
5376 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5377 {
5378         u32 val, fcnt_prog;
5379
5380         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5381         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5382                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5383                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5384         return fcnt_prog;
5385 }
5386
5387 /**
5388  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5389  * @pf: board private structure
5390  **/
5391 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5392 {
5393         u32 fcnt_prog, fcnt_avail;
5394
5395         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5396                 return;
5397
5398         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5399          * to re-enable
5400          */
5401         fcnt_prog = i40e_get_global_fd_count(pf);
5402         fcnt_avail = pf->fdir_pf_filter_count;
5403         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5404             (pf->fd_add_err == 0) ||
5405             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5406                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5407                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5408                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5409                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5410                 }
5411         }
5412         /* Wait for some more space to be available to turn on ATR */
5413         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5414                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5415                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5416                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5417                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5418                 }
5419         }
5420 }
5421
5422 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5423 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5424 /**
5425  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5426  * @pf: board private structure
5427  **/
5428 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5429 {
5430         unsigned long min_flush_time;
5431         int flush_wait_retry = 50;
5432         bool disable_atr = false;
5433         int fd_room;
5434         int reg;
5435
5436         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5437                 return;
5438
5439         if (time_after(jiffies, pf->fd_flush_timestamp +
5440                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5441                 /* If the flush is happening too quick and we have mostly
5442                  * SB rules we should not re-enable ATR for some time.
5443                  */
5444                 min_flush_time = pf->fd_flush_timestamp
5445                                 + (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5446                 fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5447
5448                 if (!(time_after(jiffies, min_flush_time)) &&
5449                     (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5450                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5451                         disable_atr = true;
5452                 }
5453
5454                 pf->fd_flush_timestamp = jiffies;
5455                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5456                 /* flush all filters */
5457                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5458                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5459                 i40e_flush(&pf->hw);
5460                 pf->fd_flush_cnt++;
5461                 pf->fd_add_err = 0;
5462                 do {
5463                         /* Check FD flush status every 5-6msec */
5464                         usleep_range(5000, 6000);
5465                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5466                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5467                                 break;
5468                 } while (flush_wait_retry--);
5469                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5470                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5471                 } else {
5472                         /* replay sideband filters */
5473                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5474                         if (!disable_atr)
5475                                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5476                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5477                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5478                 }
5479         }
5480 }
5481
5482 /**
5483  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5484  * @pf: board private structure
5485  **/
5486 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5487 {
5488         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5489 }
5490
5491 /* We can see up to 256 filter programming desc in transit if the filters are
5492  * being applied really fast; before we see the first
5493  * filter miss error on Rx queue 0. Accumulating enough error messages before
5494  * reacting will make sure we don't cause flush too often.
5495  */
5496 #define I40E_MAX_FD_PROGRAM_ERROR 256
5497
5498 /**
5499  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5500  * @pf: board private structure
5501  **/
5502 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5503 {
5504
5505         /* if interface is down do nothing */
5506         if (test_bit(__I40E_DOWN, &pf->state))
5507                 return;
5508
5509         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5510                 return;
5511
5512         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5513                 i40e_fdir_flush_and_replay(pf);
5514
5515         i40e_fdir_check_and_reenable(pf);
5516
5517 }
5518
5519 /**
5520  * i40e_vsi_link_event - notify VSI of a link event
5521  * @vsi: vsi to be notified
5522  * @link_up: link up or down
5523  **/
5524 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5525 {
5526         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5527                 return;
5528
5529         switch (vsi->type) {
5530         case I40E_VSI_MAIN:
5531 #ifdef I40E_FCOE
5532         case I40E_VSI_FCOE:
5533 #endif
5534                 if (!vsi->netdev || !vsi->netdev_registered)
5535                         break;
5536
5537                 if (link_up) {
5538                         netif_carrier_on(vsi->netdev);
5539                         netif_tx_wake_all_queues(vsi->netdev);
5540                 } else {
5541                         netif_carrier_off(vsi->netdev);
5542                         netif_tx_stop_all_queues(vsi->netdev);
5543                 }
5544                 break;
5545
5546         case I40E_VSI_SRIOV:
5547         case I40E_VSI_VMDQ2:
5548         case I40E_VSI_CTRL:
5549         case I40E_VSI_MIRROR:
5550         default:
5551                 /* there is no notification for other VSIs */
5552                 break;
5553         }
5554 }
5555
5556 /**
5557  * i40e_veb_link_event - notify elements on the veb of a link event
5558  * @veb: veb to be notified
5559  * @link_up: link up or down
5560  **/
5561 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5562 {
5563         struct i40e_pf *pf;
5564         int i;
5565
5566         if (!veb || !veb->pf)
5567                 return;
5568         pf = veb->pf;
5569
5570         /* depth first... */
5571         for (i = 0; i < I40E_MAX_VEB; i++)
5572                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5573                         i40e_veb_link_event(pf->veb[i], link_up);
5574
5575         /* ... now the local VSIs */
5576         for (i = 0; i < pf->num_alloc_vsi; i++)
5577                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5578                         i40e_vsi_link_event(pf->vsi[i], link_up);
5579 }
5580
5581 /**
5582  * i40e_link_event - Update netif_carrier status
5583  * @pf: board private structure
5584  **/
5585 static void i40e_link_event(struct i40e_pf *pf)
5586 {
5587         bool new_link, old_link;
5588         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5589         u8 new_link_speed, old_link_speed;
5590
5591         /* set this to force the get_link_status call to refresh state */
5592         pf->hw.phy.get_link_info = true;
5593
5594         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5595         new_link = i40e_get_link_status(&pf->hw);
5596         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5597         new_link_speed = pf->hw.phy.link_info.link_speed;
5598
5599         if (new_link == old_link &&
5600             new_link_speed == old_link_speed &&
5601             (test_bit(__I40E_DOWN, &vsi->state) ||
5602              new_link == netif_carrier_ok(vsi->netdev)))
5603                 return;
5604
5605         if (!test_bit(__I40E_DOWN, &vsi->state))
5606                 i40e_print_link_message(vsi, new_link);
5607
5608         /* Notify the base of the switch tree connected to
5609          * the link.  Floating VEBs are not notified.
5610          */
5611         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5612                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5613         else
5614                 i40e_vsi_link_event(vsi, new_link);
5615
5616         if (pf->vf)
5617                 i40e_vc_notify_link_state(pf);
5618
5619         if (pf->flags & I40E_FLAG_PTP)
5620                 i40e_ptp_set_increment(pf);
5621 }
5622
5623 /**
5624  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5625  * @pf: board private structure
5626  *
5627  * Set the per-queue flags to request a check for stuck queues in the irq
5628  * clean functions, then force interrupts to be sure the irq clean is called.
5629  **/
5630 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5631 {
5632         int i, v;
5633
5634         /* If we're down or resetting, just bail */
5635         if (test_bit(__I40E_DOWN, &pf->state) ||
5636             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5637                 return;
5638
5639         /* for each VSI/netdev
5640          *     for each Tx queue
5641          *         set the check flag
5642          *     for each q_vector
5643          *         force an interrupt
5644          */
5645         for (v = 0; v < pf->num_alloc_vsi; v++) {
5646                 struct i40e_vsi *vsi = pf->vsi[v];
5647                 int armed = 0;
5648
5649                 if (!pf->vsi[v] ||
5650                     test_bit(__I40E_DOWN, &vsi->state) ||
5651                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5652                         continue;
5653
5654                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5655                         set_check_for_tx_hang(vsi->tx_rings[i]);
5656                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5657                                      &vsi->tx_rings[i]->state))
5658                                 armed++;
5659                 }
5660
5661                 if (armed) {
5662                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5663                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5664                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5665                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
5666                                       I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
5667                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
5668                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
5669                         } else {
5670                                 u16 vec = vsi->base_vector - 1;
5671                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5672                                       I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK |
5673                                       I40E_PFINT_DYN_CTLN_ITR_INDX_MASK |
5674                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_ENA_MASK |
5675                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK);
5676                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5677                                         wr32(&vsi->back->hw,
5678                                              I40E_PFINT_DYN_CTLN(vec), val);
5679                         }
5680                         i40e_flush(&vsi->back->hw);
5681                 }
5682         }
5683 }
5684
5685 /**
5686  * i40e_watchdog_subtask - periodic checks not using event driven response
5687  * @pf: board private structure
5688  **/
5689 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5690 {
5691         int i;
5692
5693         /* if interface is down do nothing */
5694         if (test_bit(__I40E_DOWN, &pf->state) ||
5695             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5696                 return;
5697
5698         /* make sure we don't do these things too often */
5699         if (time_before(jiffies, (pf->service_timer_previous +
5700                                   pf->service_timer_period)))
5701                 return;
5702         pf->service_timer_previous = jiffies;
5703
5704         i40e_check_hang_subtask(pf);
5705         i40e_link_event(pf);
5706
5707         /* Update the stats for active netdevs so the network stack
5708          * can look at updated numbers whenever it cares to
5709          */
5710         for (i = 0; i < pf->num_alloc_vsi; i++)
5711                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5712                         i40e_update_stats(pf->vsi[i]);
5713
5714         /* Update the stats for the active switching components */
5715         for (i = 0; i < I40E_MAX_VEB; i++)
5716                 if (pf->veb[i])
5717                         i40e_update_veb_stats(pf->veb[i]);
5718
5719         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5720 }
5721
5722 /**
5723  * i40e_reset_subtask - Set up for resetting the device and driver
5724  * @pf: board private structure
5725  **/
5726 static void i40e_reset_subtask(struct i40e_pf *pf)
5727 {
5728         u32 reset_flags = 0;
5729
5730         rtnl_lock();
5731         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5732                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5733                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5734         }
5735         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5736                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5737                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5738         }
5739         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5740                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5741                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5742         }
5743         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5744                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5745                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5746         }
5747         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5748                 reset_flags |= (1 << __I40E_DOWN_REQUESTED);
5749                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5750         }
5751
5752         /* If there's a recovery already waiting, it takes
5753          * precedence before starting a new reset sequence.
5754          */
5755         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5756                 i40e_handle_reset_warning(pf);
5757                 goto unlock;
5758         }
5759
5760         /* If we're already down or resetting, just bail */
5761         if (reset_flags &&
5762             !test_bit(__I40E_DOWN, &pf->state) &&
5763             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5764                 i40e_do_reset(pf, reset_flags);
5765
5766 unlock:
5767         rtnl_unlock();
5768 }
5769
5770 /**
5771  * i40e_handle_link_event - Handle link event
5772  * @pf: board private structure
5773  * @e: event info posted on ARQ
5774  **/
5775 static void i40e_handle_link_event(struct i40e_pf *pf,
5776                                    struct i40e_arq_event_info *e)
5777 {
5778         struct i40e_hw *hw = &pf->hw;
5779         struct i40e_aqc_get_link_status *status =
5780                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5781         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
5782
5783         /* save off old link status information */
5784         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
5785                sizeof(pf->hw.phy.link_info_old));
5786
5787         /* Do a new status request to re-enable LSE reporting
5788          * and load new status information into the hw struct
5789          * This completely ignores any state information
5790          * in the ARQ event info, instead choosing to always
5791          * issue the AQ update link status command.
5792          */
5793         i40e_link_event(pf);
5794
5795         /* check for unqualified module, if link is down */
5796         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5797             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5798             (!(status->link_info & I40E_AQ_LINK_UP)))
5799                 dev_err(&pf->pdev->dev,
5800                         "The driver failed to link because an unqualified module was detected.\n");
5801 }
5802
5803 /**
5804  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5805  * @pf: board private structure
5806  **/
5807 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5808 {
5809         struct i40e_arq_event_info event;
5810         struct i40e_hw *hw = &pf->hw;
5811         u16 pending, i = 0;
5812         i40e_status ret;
5813         u16 opcode;
5814         u32 oldval;
5815         u32 val;
5816
5817         /* Do not run clean AQ when PF reset fails */
5818         if (test_bit(__I40E_RESET_FAILED, &pf->state))
5819                 return;
5820
5821         /* check for error indications */
5822         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5823         oldval = val;
5824         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5825                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5826                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5827         }
5828         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5829                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5830                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5831         }
5832         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5833                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5834                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5835         }
5836         if (oldval != val)
5837                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5838
5839         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5840         oldval = val;
5841         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5842                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5843                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5844         }
5845         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5846                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5847                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5848         }
5849         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5850                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5851                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5852         }
5853         if (oldval != val)
5854                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5855
5856         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
5857         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
5858         if (!event.msg_buf)
5859                 return;
5860
5861         do {
5862                 ret = i40e_clean_arq_element(hw, &event, &pending);
5863                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
5864                         break;
5865                 else if (ret) {
5866                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5867                         break;
5868                 }
5869
5870                 opcode = le16_to_cpu(event.desc.opcode);
5871                 switch (opcode) {
5872
5873                 case i40e_aqc_opc_get_link_status:
5874                         i40e_handle_link_event(pf, &event);
5875                         break;
5876                 case i40e_aqc_opc_send_msg_to_pf:
5877                         ret = i40e_vc_process_vf_msg(pf,
5878                                         le16_to_cpu(event.desc.retval),
5879                                         le32_to_cpu(event.desc.cookie_high),
5880                                         le32_to_cpu(event.desc.cookie_low),
5881                                         event.msg_buf,
5882                                         event.msg_len);
5883                         break;
5884                 case i40e_aqc_opc_lldp_update_mib:
5885                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5886 #ifdef CONFIG_I40E_DCB
5887                         rtnl_lock();
5888                         ret = i40e_handle_lldp_event(pf, &event);
5889                         rtnl_unlock();
5890 #endif /* CONFIG_I40E_DCB */
5891                         break;
5892                 case i40e_aqc_opc_event_lan_overflow:
5893                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5894                         i40e_handle_lan_overflow_event(pf, &event);
5895                         break;
5896                 case i40e_aqc_opc_send_msg_to_peer:
5897                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5898                         break;
5899                 default:
5900                         dev_info(&pf->pdev->dev,
5901                                  "ARQ Error: Unknown event 0x%04x received\n",
5902                                  opcode);
5903                         break;
5904                 }
5905         } while (pending && (i++ < pf->adminq_work_limit));
5906
5907         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5908         /* re-enable Admin queue interrupt cause */
5909         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5910         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5911         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5912         i40e_flush(hw);
5913
5914         kfree(event.msg_buf);
5915 }
5916
5917 /**
5918  * i40e_verify_eeprom - make sure eeprom is good to use
5919  * @pf: board private structure
5920  **/
5921 static void i40e_verify_eeprom(struct i40e_pf *pf)
5922 {
5923         int err;
5924
5925         err = i40e_diag_eeprom_test(&pf->hw);
5926         if (err) {
5927                 /* retry in case of garbage read */
5928                 err = i40e_diag_eeprom_test(&pf->hw);
5929                 if (err) {
5930                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5931                                  err);
5932                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5933                 }
5934         }
5935
5936         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5937                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5938                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5939         }
5940 }
5941
5942 /**
5943  * i40e_enable_pf_switch_lb
5944  * @pf: pointer to the PF structure
5945  *
5946  * enable switch loop back or die - no point in a return value
5947  **/
5948 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
5949 {
5950         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5951         struct i40e_vsi_context ctxt;
5952         int aq_ret;
5953
5954         ctxt.seid = pf->main_vsi_seid;
5955         ctxt.pf_num = pf->hw.pf_id;
5956         ctxt.vf_num = 0;
5957         aq_ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
5958         if (aq_ret) {
5959                 dev_info(&pf->pdev->dev,
5960                          "%s couldn't get PF vsi config, err %d, aq_err %d\n",
5961                          __func__, aq_ret, pf->hw.aq.asq_last_status);
5962                 return;
5963         }
5964         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
5965         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
5966         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
5967
5968         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
5969         if (aq_ret) {
5970                 dev_info(&pf->pdev->dev,
5971                          "%s: update vsi switch failed, aq_err=%d\n",
5972                          __func__, vsi->back->hw.aq.asq_last_status);
5973         }
5974 }
5975
5976 /**
5977  * i40e_disable_pf_switch_lb
5978  * @pf: pointer to the PF structure
5979  *
5980  * disable switch loop back or die - no point in a return value
5981  **/
5982 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
5983 {
5984         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5985         struct i40e_vsi_context ctxt;
5986         int aq_ret;
5987
5988         ctxt.seid = pf->main_vsi_seid;
5989         ctxt.pf_num = pf->hw.pf_id;
5990         ctxt.vf_num = 0;
5991         aq_ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
5992         if (aq_ret) {
5993                 dev_info(&pf->pdev->dev,
5994                          "%s couldn't get PF vsi config, err %d, aq_err %d\n",
5995                          __func__, aq_ret, pf->hw.aq.asq_last_status);
5996                 return;
5997         }
5998         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
5999         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6000         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6001
6002         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6003         if (aq_ret) {
6004                 dev_info(&pf->pdev->dev,
6005                          "%s: update vsi switch failed, aq_err=%d\n",
6006                          __func__, vsi->back->hw.aq.asq_last_status);
6007         }
6008 }
6009
6010 /**
6011  * i40e_config_bridge_mode - Configure the HW bridge mode
6012  * @veb: pointer to the bridge instance
6013  *
6014  * Configure the loop back mode for the LAN VSI that is downlink to the
6015  * specified HW bridge instance. It is expected this function is called
6016  * when a new HW bridge is instantiated.
6017  **/
6018 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6019 {
6020         struct i40e_pf *pf = veb->pf;
6021
6022         dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6023                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6024         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6025                 i40e_disable_pf_switch_lb(pf);
6026         else
6027                 i40e_enable_pf_switch_lb(pf);
6028 }
6029
6030 /**
6031  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6032  * @veb: pointer to the VEB instance
6033  *
6034  * This is a recursive function that first builds the attached VSIs then
6035  * recurses in to build the next layer of VEB.  We track the connections
6036  * through our own index numbers because the seid's from the HW could
6037  * change across the reset.
6038  **/
6039 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6040 {
6041         struct i40e_vsi *ctl_vsi = NULL;
6042         struct i40e_pf *pf = veb->pf;
6043         int v, veb_idx;
6044         int ret;
6045
6046         /* build VSI that owns this VEB, temporarily attached to base VEB */
6047         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6048                 if (pf->vsi[v] &&
6049                     pf->vsi[v]->veb_idx == veb->idx &&
6050                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6051                         ctl_vsi = pf->vsi[v];
6052                         break;
6053                 }
6054         }
6055         if (!ctl_vsi) {
6056                 dev_info(&pf->pdev->dev,
6057                          "missing owner VSI for veb_idx %d\n", veb->idx);
6058                 ret = -ENOENT;
6059                 goto end_reconstitute;
6060         }
6061         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6062                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6063         ret = i40e_add_vsi(ctl_vsi);
6064         if (ret) {
6065                 dev_info(&pf->pdev->dev,
6066                          "rebuild of owner VSI failed: %d\n", ret);
6067                 goto end_reconstitute;
6068         }
6069         i40e_vsi_reset_stats(ctl_vsi);
6070
6071         /* create the VEB in the switch and move the VSI onto the VEB */
6072         ret = i40e_add_veb(veb, ctl_vsi);
6073         if (ret)
6074                 goto end_reconstitute;
6075
6076         i40e_config_bridge_mode(veb);
6077
6078         /* create the remaining VSIs attached to this VEB */
6079         for (v = 0; v < pf->num_alloc_vsi; v++) {
6080                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6081                         continue;
6082
6083                 if (pf->vsi[v]->veb_idx == veb->idx) {
6084                         struct i40e_vsi *vsi = pf->vsi[v];
6085                         vsi->uplink_seid = veb->seid;
6086                         ret = i40e_add_vsi(vsi);
6087                         if (ret) {
6088                                 dev_info(&pf->pdev->dev,
6089                                          "rebuild of vsi_idx %d failed: %d\n",
6090                                          v, ret);
6091                                 goto end_reconstitute;
6092                         }
6093                         i40e_vsi_reset_stats(vsi);
6094                 }
6095         }
6096
6097         /* create any VEBs attached to this VEB - RECURSION */
6098         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6099                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6100                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6101                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6102                         if (ret)
6103                                 break;
6104                 }
6105         }
6106
6107 end_reconstitute:
6108         return ret;
6109 }
6110
6111 /**
6112  * i40e_get_capabilities - get info about the HW
6113  * @pf: the PF struct
6114  **/
6115 static int i40e_get_capabilities(struct i40e_pf *pf)
6116 {
6117         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6118         u16 data_size;
6119         int buf_len;
6120         int err;
6121
6122         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6123         do {
6124                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6125                 if (!cap_buf)
6126                         return -ENOMEM;
6127
6128                 /* this loads the data into the hw struct for us */
6129                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6130                                             &data_size,
6131                                             i40e_aqc_opc_list_func_capabilities,
6132                                             NULL);
6133                 /* data loaded, buffer no longer needed */
6134                 kfree(cap_buf);
6135
6136                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6137                         /* retry with a larger buffer */
6138                         buf_len = data_size;
6139                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6140                         dev_info(&pf->pdev->dev,
6141                                  "capability discovery failed: aq=%d\n",
6142                                  pf->hw.aq.asq_last_status);
6143                         return -ENODEV;
6144                 }
6145         } while (err);
6146
6147         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6148             (pf->hw.aq.fw_maj_ver < 2)) {
6149                 pf->hw.func_caps.num_msix_vectors++;
6150                 pf->hw.func_caps.num_msix_vectors_vf++;
6151         }
6152
6153         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6154                 dev_info(&pf->pdev->dev,
6155                          "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",
6156                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6157                          pf->hw.func_caps.num_msix_vectors,
6158                          pf->hw.func_caps.num_msix_vectors_vf,
6159                          pf->hw.func_caps.fd_filters_guaranteed,
6160                          pf->hw.func_caps.fd_filters_best_effort,
6161                          pf->hw.func_caps.num_tx_qp,
6162                          pf->hw.func_caps.num_vsis);
6163
6164 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6165                        + pf->hw.func_caps.num_vfs)
6166         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6167                 dev_info(&pf->pdev->dev,
6168                          "got num_vsis %d, setting num_vsis to %d\n",
6169                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6170                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6171         }
6172
6173         return 0;
6174 }
6175
6176 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6177
6178 /**
6179  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6180  * @pf: board private structure
6181  **/
6182 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6183 {
6184         struct i40e_vsi *vsi;
6185         int i;
6186
6187         /* quick workaround for an NVM issue that leaves a critical register
6188          * uninitialized
6189          */
6190         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6191                 static const u32 hkey[] = {
6192                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6193                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6194                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6195                         0x95b3a76d};
6196
6197                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6198                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6199         }
6200
6201         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6202                 return;
6203
6204         /* find existing VSI and see if it needs configuring */
6205         vsi = NULL;
6206         for (i = 0; i < pf->num_alloc_vsi; i++) {
6207                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6208                         vsi = pf->vsi[i];
6209                         break;
6210                 }
6211         }
6212
6213         /* create a new VSI if none exists */
6214         if (!vsi) {
6215                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6216                                      pf->vsi[pf->lan_vsi]->seid, 0);
6217                 if (!vsi) {
6218                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6219                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6220                         return;
6221                 }
6222         }
6223
6224         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6225 }
6226
6227 /**
6228  * i40e_fdir_teardown - release the Flow Director resources
6229  * @pf: board private structure
6230  **/
6231 static void i40e_fdir_teardown(struct i40e_pf *pf)
6232 {
6233         int i;
6234
6235         i40e_fdir_filter_exit(pf);
6236         for (i = 0; i < pf->num_alloc_vsi; i++) {
6237                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6238                         i40e_vsi_release(pf->vsi[i]);
6239                         break;
6240                 }
6241         }
6242 }
6243
6244 /**
6245  * i40e_prep_for_reset - prep for the core to reset
6246  * @pf: board private structure
6247  *
6248  * Close up the VFs and other things in prep for PF Reset.
6249   **/
6250 static void i40e_prep_for_reset(struct i40e_pf *pf)
6251 {
6252         struct i40e_hw *hw = &pf->hw;
6253         i40e_status ret = 0;
6254         u32 v;
6255
6256         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6257         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6258                 return;
6259
6260         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6261
6262         /* quiesce the VSIs and their queues that are not already DOWN */
6263         i40e_pf_quiesce_all_vsi(pf);
6264
6265         for (v = 0; v < pf->num_alloc_vsi; v++) {
6266                 if (pf->vsi[v])
6267                         pf->vsi[v]->seid = 0;
6268         }
6269
6270         i40e_shutdown_adminq(&pf->hw);
6271
6272         /* call shutdown HMC */
6273         if (hw->hmc.hmc_obj) {
6274                 ret = i40e_shutdown_lan_hmc(hw);
6275                 if (ret)
6276                         dev_warn(&pf->pdev->dev,
6277                                  "shutdown_lan_hmc failed: %d\n", ret);
6278         }
6279 }
6280
6281 /**
6282  * i40e_send_version - update firmware with driver version
6283  * @pf: PF struct
6284  */
6285 static void i40e_send_version(struct i40e_pf *pf)
6286 {
6287         struct i40e_driver_version dv;
6288
6289         dv.major_version = DRV_VERSION_MAJOR;
6290         dv.minor_version = DRV_VERSION_MINOR;
6291         dv.build_version = DRV_VERSION_BUILD;
6292         dv.subbuild_version = 0;
6293         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6294         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6295 }
6296
6297 /**
6298  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6299  * @pf: board private structure
6300  * @reinit: if the Main VSI needs to re-initialized.
6301  **/
6302 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6303 {
6304         struct i40e_hw *hw = &pf->hw;
6305         u8 set_fc_aq_fail = 0;
6306         i40e_status ret;
6307         u32 v;
6308
6309         /* Now we wait for GRST to settle out.
6310          * We don't have to delete the VEBs or VSIs from the hw switch
6311          * because the reset will make them disappear.
6312          */
6313         ret = i40e_pf_reset(hw);
6314         if (ret) {
6315                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6316                 set_bit(__I40E_RESET_FAILED, &pf->state);
6317                 goto clear_recovery;
6318         }
6319         pf->pfr_count++;
6320
6321         if (test_bit(__I40E_DOWN, &pf->state))
6322                 goto clear_recovery;
6323         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6324
6325         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6326         ret = i40e_init_adminq(&pf->hw);
6327         if (ret) {
6328                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
6329                 goto clear_recovery;
6330         }
6331
6332         /* re-verify the eeprom if we just had an EMP reset */
6333         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6334                 i40e_verify_eeprom(pf);
6335
6336         i40e_clear_pxe_mode(hw);
6337         ret = i40e_get_capabilities(pf);
6338         if (ret) {
6339                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
6340                          ret);
6341                 goto end_core_reset;
6342         }
6343
6344         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6345                                 hw->func_caps.num_rx_qp,
6346                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6347         if (ret) {
6348                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6349                 goto end_core_reset;
6350         }
6351         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6352         if (ret) {
6353                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6354                 goto end_core_reset;
6355         }
6356
6357 #ifdef CONFIG_I40E_DCB
6358         ret = i40e_init_pf_dcb(pf);
6359         if (ret) {
6360                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6361                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6362                 /* Continue without DCB enabled */
6363         }
6364 #endif /* CONFIG_I40E_DCB */
6365 #ifdef I40E_FCOE
6366         ret = i40e_init_pf_fcoe(pf);
6367         if (ret)
6368                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6369
6370 #endif
6371         /* do basic switch setup */
6372         ret = i40e_setup_pf_switch(pf, reinit);
6373         if (ret)
6374                 goto end_core_reset;
6375
6376         /* driver is only interested in link up/down and module qualification
6377          * reports from firmware
6378          */
6379         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6380                                        I40E_AQ_EVENT_LINK_UPDOWN |
6381                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6382         if (ret)
6383                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", ret);
6384
6385         /* make sure our flow control settings are restored */
6386         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6387         if (ret)
6388                 dev_info(&pf->pdev->dev, "set fc fail, aq_err %d\n", ret);
6389
6390         /* Rebuild the VSIs and VEBs that existed before reset.
6391          * They are still in our local switch element arrays, so only
6392          * need to rebuild the switch model in the HW.
6393          *
6394          * If there were VEBs but the reconstitution failed, we'll try
6395          * try to recover minimal use by getting the basic PF VSI working.
6396          */
6397         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6398                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6399                 /* find the one VEB connected to the MAC, and find orphans */
6400                 for (v = 0; v < I40E_MAX_VEB; v++) {
6401                         if (!pf->veb[v])
6402                                 continue;
6403
6404                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6405                             pf->veb[v]->uplink_seid == 0) {
6406                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6407
6408                                 if (!ret)
6409                                         continue;
6410
6411                                 /* If Main VEB failed, we're in deep doodoo,
6412                                  * so give up rebuilding the switch and set up
6413                                  * for minimal rebuild of PF VSI.
6414                                  * If orphan failed, we'll report the error
6415                                  * but try to keep going.
6416                                  */
6417                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6418                                         dev_info(&pf->pdev->dev,
6419                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6420                                                  ret);
6421                                         pf->vsi[pf->lan_vsi]->uplink_seid
6422                                                                 = pf->mac_seid;
6423                                         break;
6424                                 } else if (pf->veb[v]->uplink_seid == 0) {
6425                                         dev_info(&pf->pdev->dev,
6426                                                  "rebuild of orphan VEB failed: %d\n",
6427                                                  ret);
6428                                 }
6429                         }
6430                 }
6431         }
6432
6433         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6434                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6435                 /* no VEB, so rebuild only the Main VSI */
6436                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6437                 if (ret) {
6438                         dev_info(&pf->pdev->dev,
6439                                  "rebuild of Main VSI failed: %d\n", ret);
6440                         goto end_core_reset;
6441                 }
6442         }
6443
6444         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6445             (pf->hw.aq.fw_maj_ver < 4)) {
6446                 msleep(75);
6447                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6448                 if (ret)
6449                         dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
6450                                  pf->hw.aq.asq_last_status);
6451         }
6452         /* reinit the misc interrupt */
6453         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6454                 ret = i40e_setup_misc_vector(pf);
6455
6456         /* restart the VSIs that were rebuilt and running before the reset */
6457         i40e_pf_unquiesce_all_vsi(pf);
6458
6459         if (pf->num_alloc_vfs) {
6460                 for (v = 0; v < pf->num_alloc_vfs; v++)
6461                         i40e_reset_vf(&pf->vf[v], true);
6462         }
6463
6464         /* tell the firmware that we're starting */
6465         i40e_send_version(pf);
6466
6467 end_core_reset:
6468         clear_bit(__I40E_RESET_FAILED, &pf->state);
6469 clear_recovery:
6470         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6471 }
6472
6473 /**
6474  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6475  * @pf: board private structure
6476  *
6477  * Close up the VFs and other things in prep for a Core Reset,
6478  * then get ready to rebuild the world.
6479  **/
6480 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6481 {
6482         i40e_prep_for_reset(pf);
6483         i40e_reset_and_rebuild(pf, false);
6484 }
6485
6486 /**
6487  * i40e_handle_mdd_event
6488  * @pf: pointer to the PF structure
6489  *
6490  * Called from the MDD irq handler to identify possibly malicious vfs
6491  **/
6492 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6493 {
6494         struct i40e_hw *hw = &pf->hw;
6495         bool mdd_detected = false;
6496         bool pf_mdd_detected = false;
6497         struct i40e_vf *vf;
6498         u32 reg;
6499         int i;
6500
6501         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6502                 return;
6503
6504         /* find what triggered the MDD event */
6505         reg = rd32(hw, I40E_GL_MDET_TX);
6506         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6507                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6508                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6509                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6510                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6511                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6512                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6513                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6514                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6515                                 pf->hw.func_caps.base_queue;
6516                 if (netif_msg_tx_err(pf))
6517                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6518                                  event, queue, pf_num, vf_num);
6519                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6520                 mdd_detected = true;
6521         }
6522         reg = rd32(hw, I40E_GL_MDET_RX);
6523         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6524                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6525                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6526                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6527                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6528                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6529                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6530                                 pf->hw.func_caps.base_queue;
6531                 if (netif_msg_rx_err(pf))
6532                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6533                                  event, queue, func);
6534                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6535                 mdd_detected = true;
6536         }
6537
6538         if (mdd_detected) {
6539                 reg = rd32(hw, I40E_PF_MDET_TX);
6540                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6541                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6542                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6543                         pf_mdd_detected = true;
6544                 }
6545                 reg = rd32(hw, I40E_PF_MDET_RX);
6546                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6547                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6548                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6549                         pf_mdd_detected = true;
6550                 }
6551                 /* Queue belongs to the PF, initiate a reset */
6552                 if (pf_mdd_detected) {
6553                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6554                         i40e_service_event_schedule(pf);
6555                 }
6556         }
6557
6558         /* see if one of the VFs needs its hand slapped */
6559         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6560                 vf = &(pf->vf[i]);
6561                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6562                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6563                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6564                         vf->num_mdd_events++;
6565                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6566                                  i);
6567                 }
6568
6569                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6570                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6571                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6572                         vf->num_mdd_events++;
6573                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6574                                  i);
6575                 }
6576
6577                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6578                         dev_info(&pf->pdev->dev,
6579                                  "Too many MDD events on VF %d, disabled\n", i);
6580                         dev_info(&pf->pdev->dev,
6581                                  "Use PF Control I/F to re-enable the VF\n");
6582                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6583                 }
6584         }
6585
6586         /* re-enable mdd interrupt cause */
6587         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6588         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6589         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6590         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6591         i40e_flush(hw);
6592 }
6593
6594 #ifdef CONFIG_I40E_VXLAN
6595 /**
6596  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6597  * @pf: board private structure
6598  **/
6599 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6600 {
6601         struct i40e_hw *hw = &pf->hw;
6602         i40e_status ret;
6603         u8 filter_index;
6604         __be16 port;
6605         int i;
6606
6607         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6608                 return;
6609
6610         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6611
6612         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6613                 if (pf->pending_vxlan_bitmap & (1 << i)) {
6614                         pf->pending_vxlan_bitmap &= ~(1 << i);
6615                         port = pf->vxlan_ports[i];
6616                         ret = port ?
6617                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
6618                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6619                                                      &filter_index, NULL)
6620                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
6621
6622                         if (ret) {
6623                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
6624                                          port ? "adding" : "deleting",
6625                                          ntohs(port), port ? i : i);
6626
6627                                 pf->vxlan_ports[i] = 0;
6628                         } else {
6629                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
6630                                          port ? "Added" : "Deleted",
6631                                          ntohs(port), port ? i : filter_index);
6632                         }
6633                 }
6634         }
6635 }
6636
6637 #endif
6638 /**
6639  * i40e_service_task - Run the driver's async subtasks
6640  * @work: pointer to work_struct containing our data
6641  **/
6642 static void i40e_service_task(struct work_struct *work)
6643 {
6644         struct i40e_pf *pf = container_of(work,
6645                                           struct i40e_pf,
6646                                           service_task);
6647         unsigned long start_time = jiffies;
6648
6649         /* don't bother with service tasks if a reset is in progress */
6650         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6651                 i40e_service_event_complete(pf);
6652                 return;
6653         }
6654
6655         i40e_reset_subtask(pf);
6656         i40e_handle_mdd_event(pf);
6657         i40e_vc_process_vflr_event(pf);
6658         i40e_watchdog_subtask(pf);
6659         i40e_fdir_reinit_subtask(pf);
6660         i40e_sync_filters_subtask(pf);
6661 #ifdef CONFIG_I40E_VXLAN
6662         i40e_sync_vxlan_filters_subtask(pf);
6663 #endif
6664         i40e_clean_adminq_subtask(pf);
6665
6666         i40e_service_event_complete(pf);
6667
6668         /* If the tasks have taken longer than one timer cycle or there
6669          * is more work to be done, reschedule the service task now
6670          * rather than wait for the timer to tick again.
6671          */
6672         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6673             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6674             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6675             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6676                 i40e_service_event_schedule(pf);
6677 }
6678
6679 /**
6680  * i40e_service_timer - timer callback
6681  * @data: pointer to PF struct
6682  **/
6683 static void i40e_service_timer(unsigned long data)
6684 {
6685         struct i40e_pf *pf = (struct i40e_pf *)data;
6686
6687         mod_timer(&pf->service_timer,
6688                   round_jiffies(jiffies + pf->service_timer_period));
6689         i40e_service_event_schedule(pf);
6690 }
6691
6692 /**
6693  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6694  * @vsi: the VSI being configured
6695  **/
6696 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6697 {
6698         struct i40e_pf *pf = vsi->back;
6699
6700         switch (vsi->type) {
6701         case I40E_VSI_MAIN:
6702                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6703                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6704                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6705                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6706                         vsi->num_q_vectors = pf->num_lan_msix;
6707                 else
6708                         vsi->num_q_vectors = 1;
6709
6710                 break;
6711
6712         case I40E_VSI_FDIR:
6713                 vsi->alloc_queue_pairs = 1;
6714                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6715                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6716                 vsi->num_q_vectors = 1;
6717                 break;
6718
6719         case I40E_VSI_VMDQ2:
6720                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6721                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6722                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6723                 vsi->num_q_vectors = pf->num_vmdq_msix;
6724                 break;
6725
6726         case I40E_VSI_SRIOV:
6727                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6728                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6729                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6730                 break;
6731
6732 #ifdef I40E_FCOE
6733         case I40E_VSI_FCOE:
6734                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6735                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6736                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6737                 vsi->num_q_vectors = pf->num_fcoe_msix;
6738                 break;
6739
6740 #endif /* I40E_FCOE */
6741         default:
6742                 WARN_ON(1);
6743                 return -ENODATA;
6744         }
6745
6746         return 0;
6747 }
6748
6749 /**
6750  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6751  * @type: VSI pointer
6752  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6753  *
6754  * On error: returns error code (negative)
6755  * On success: returns 0
6756  **/
6757 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6758 {
6759         int size;
6760         int ret = 0;
6761
6762         /* allocate memory for both Tx and Rx ring pointers */
6763         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6764         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6765         if (!vsi->tx_rings)
6766                 return -ENOMEM;
6767         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6768
6769         if (alloc_qvectors) {
6770                 /* allocate memory for q_vector pointers */
6771                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6772                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6773                 if (!vsi->q_vectors) {
6774                         ret = -ENOMEM;
6775                         goto err_vectors;
6776                 }
6777         }
6778         return ret;
6779
6780 err_vectors:
6781         kfree(vsi->tx_rings);
6782         return ret;
6783 }
6784
6785 /**
6786  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6787  * @pf: board private structure
6788  * @type: type of VSI
6789  *
6790  * On error: returns error code (negative)
6791  * On success: returns vsi index in PF (positive)
6792  **/
6793 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6794 {
6795         int ret = -ENODEV;
6796         struct i40e_vsi *vsi;
6797         int vsi_idx;
6798         int i;
6799
6800         /* Need to protect the allocation of the VSIs at the PF level */
6801         mutex_lock(&pf->switch_mutex);
6802
6803         /* VSI list may be fragmented if VSI creation/destruction has
6804          * been happening.  We can afford to do a quick scan to look
6805          * for any free VSIs in the list.
6806          *
6807          * find next empty vsi slot, looping back around if necessary
6808          */
6809         i = pf->next_vsi;
6810         while (i < pf->num_alloc_vsi && pf->vsi[i])
6811                 i++;
6812         if (i >= pf->num_alloc_vsi) {
6813                 i = 0;
6814                 while (i < pf->next_vsi && pf->vsi[i])
6815                         i++;
6816         }
6817
6818         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6819                 vsi_idx = i;             /* Found one! */
6820         } else {
6821                 ret = -ENODEV;
6822                 goto unlock_pf;  /* out of VSI slots! */
6823         }
6824         pf->next_vsi = ++i;
6825
6826         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6827         if (!vsi) {
6828                 ret = -ENOMEM;
6829                 goto unlock_pf;
6830         }
6831         vsi->type = type;
6832         vsi->back = pf;
6833         set_bit(__I40E_DOWN, &vsi->state);
6834         vsi->flags = 0;
6835         vsi->idx = vsi_idx;
6836         vsi->rx_itr_setting = pf->rx_itr_default;
6837         vsi->tx_itr_setting = pf->tx_itr_default;
6838         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
6839                                 pf->rss_table_size : 64;
6840         vsi->netdev_registered = false;
6841         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6842         INIT_LIST_HEAD(&vsi->mac_filter_list);
6843         vsi->irqs_ready = false;
6844
6845         ret = i40e_set_num_rings_in_vsi(vsi);
6846         if (ret)
6847                 goto err_rings;
6848
6849         ret = i40e_vsi_alloc_arrays(vsi, true);
6850         if (ret)
6851                 goto err_rings;
6852
6853         /* Setup default MSIX irq handler for VSI */
6854         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6855
6856         pf->vsi[vsi_idx] = vsi;
6857         ret = vsi_idx;
6858         goto unlock_pf;
6859
6860 err_rings:
6861         pf->next_vsi = i - 1;
6862         kfree(vsi);
6863 unlock_pf:
6864         mutex_unlock(&pf->switch_mutex);
6865         return ret;
6866 }
6867
6868 /**
6869  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6870  * @type: VSI pointer
6871  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6872  *
6873  * On error: returns error code (negative)
6874  * On success: returns 0
6875  **/
6876 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6877 {
6878         /* free the ring and vector containers */
6879         if (free_qvectors) {
6880                 kfree(vsi->q_vectors);
6881                 vsi->q_vectors = NULL;
6882         }
6883         kfree(vsi->tx_rings);
6884         vsi->tx_rings = NULL;
6885         vsi->rx_rings = NULL;
6886 }
6887
6888 /**
6889  * i40e_vsi_clear - Deallocate the VSI provided
6890  * @vsi: the VSI being un-configured
6891  **/
6892 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6893 {
6894         struct i40e_pf *pf;
6895
6896         if (!vsi)
6897                 return 0;
6898
6899         if (!vsi->back)
6900                 goto free_vsi;
6901         pf = vsi->back;
6902
6903         mutex_lock(&pf->switch_mutex);
6904         if (!pf->vsi[vsi->idx]) {
6905                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6906                         vsi->idx, vsi->idx, vsi, vsi->type);
6907                 goto unlock_vsi;
6908         }
6909
6910         if (pf->vsi[vsi->idx] != vsi) {
6911                 dev_err(&pf->pdev->dev,
6912                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6913                         pf->vsi[vsi->idx]->idx,
6914                         pf->vsi[vsi->idx],
6915                         pf->vsi[vsi->idx]->type,
6916                         vsi->idx, vsi, vsi->type);
6917                 goto unlock_vsi;
6918         }
6919
6920         /* updates the PF for this cleared vsi */
6921         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6922         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6923
6924         i40e_vsi_free_arrays(vsi, true);
6925
6926         pf->vsi[vsi->idx] = NULL;
6927         if (vsi->idx < pf->next_vsi)
6928                 pf->next_vsi = vsi->idx;
6929
6930 unlock_vsi:
6931         mutex_unlock(&pf->switch_mutex);
6932 free_vsi:
6933         kfree(vsi);
6934
6935         return 0;
6936 }
6937
6938 /**
6939  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6940  * @vsi: the VSI being cleaned
6941  **/
6942 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6943 {
6944         int i;
6945
6946         if (vsi->tx_rings && vsi->tx_rings[0]) {
6947                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6948                         kfree_rcu(vsi->tx_rings[i], rcu);
6949                         vsi->tx_rings[i] = NULL;
6950                         vsi->rx_rings[i] = NULL;
6951                 }
6952         }
6953 }
6954
6955 /**
6956  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6957  * @vsi: the VSI being configured
6958  **/
6959 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6960 {
6961         struct i40e_ring *tx_ring, *rx_ring;
6962         struct i40e_pf *pf = vsi->back;
6963         int i;
6964
6965         /* Set basic values in the rings to be used later during open() */
6966         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6967                 /* allocate space for both Tx and Rx in one shot */
6968                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6969                 if (!tx_ring)
6970                         goto err_out;
6971
6972                 tx_ring->queue_index = i;
6973                 tx_ring->reg_idx = vsi->base_queue + i;
6974                 tx_ring->ring_active = false;
6975                 tx_ring->vsi = vsi;
6976                 tx_ring->netdev = vsi->netdev;
6977                 tx_ring->dev = &pf->pdev->dev;
6978                 tx_ring->count = vsi->num_desc;
6979                 tx_ring->size = 0;
6980                 tx_ring->dcb_tc = 0;
6981                 vsi->tx_rings[i] = tx_ring;
6982
6983                 rx_ring = &tx_ring[1];
6984                 rx_ring->queue_index = i;
6985                 rx_ring->reg_idx = vsi->base_queue + i;
6986                 rx_ring->ring_active = false;
6987                 rx_ring->vsi = vsi;
6988                 rx_ring->netdev = vsi->netdev;
6989                 rx_ring->dev = &pf->pdev->dev;
6990                 rx_ring->count = vsi->num_desc;
6991                 rx_ring->size = 0;
6992                 rx_ring->dcb_tc = 0;
6993                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6994                         set_ring_16byte_desc_enabled(rx_ring);
6995                 else
6996                         clear_ring_16byte_desc_enabled(rx_ring);
6997                 vsi->rx_rings[i] = rx_ring;
6998         }
6999
7000         return 0;
7001
7002 err_out:
7003         i40e_vsi_clear_rings(vsi);
7004         return -ENOMEM;
7005 }
7006
7007 /**
7008  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7009  * @pf: board private structure
7010  * @vectors: the number of MSI-X vectors to request
7011  *
7012  * Returns the number of vectors reserved, or error
7013  **/
7014 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7015 {
7016         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7017                                         I40E_MIN_MSIX, vectors);
7018         if (vectors < 0) {
7019                 dev_info(&pf->pdev->dev,
7020                          "MSI-X vector reservation failed: %d\n", vectors);
7021                 vectors = 0;
7022         }
7023
7024         return vectors;
7025 }
7026
7027 /**
7028  * i40e_init_msix - Setup the MSIX capability
7029  * @pf: board private structure
7030  *
7031  * Work with the OS to set up the MSIX vectors needed.
7032  *
7033  * Returns the number of vectors reserved or negative on failure
7034  **/
7035 static int i40e_init_msix(struct i40e_pf *pf)
7036 {
7037         struct i40e_hw *hw = &pf->hw;
7038         int vectors_left;
7039         int v_budget, i;
7040         int v_actual;
7041
7042         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7043                 return -ENODEV;
7044
7045         /* The number of vectors we'll request will be comprised of:
7046          *   - Add 1 for "other" cause for Admin Queue events, etc.
7047          *   - The number of LAN queue pairs
7048          *      - Queues being used for RSS.
7049          *              We don't need as many as max_rss_size vectors.
7050          *              use rss_size instead in the calculation since that
7051          *              is governed by number of cpus in the system.
7052          *      - assumes symmetric Tx/Rx pairing
7053          *   - The number of VMDq pairs
7054 #ifdef I40E_FCOE
7055          *   - The number of FCOE qps.
7056 #endif
7057          * Once we count this up, try the request.
7058          *
7059          * If we can't get what we want, we'll simplify to nearly nothing
7060          * and try again.  If that still fails, we punt.
7061          */
7062         vectors_left = hw->func_caps.num_msix_vectors;
7063         v_budget = 0;
7064
7065         /* reserve one vector for miscellaneous handler */
7066         if (vectors_left) {
7067                 v_budget++;
7068                 vectors_left--;
7069         }
7070
7071         /* reserve vectors for the main PF traffic queues */
7072         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7073         vectors_left -= pf->num_lan_msix;
7074         v_budget += pf->num_lan_msix;
7075
7076         /* reserve one vector for sideband flow director */
7077         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7078                 if (vectors_left) {
7079                         v_budget++;
7080                         vectors_left--;
7081                 } else {
7082                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7083                 }
7084         }
7085
7086 #ifdef I40E_FCOE
7087         /* can we reserve enough for FCoE? */
7088         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7089                 if (!vectors_left)
7090                         pf->num_fcoe_msix = 0;
7091                 else if (vectors_left >= pf->num_fcoe_qps)
7092                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7093                 else
7094                         pf->num_fcoe_msix = 1;
7095                 v_budget += pf->num_fcoe_msix;
7096                 vectors_left -= pf->num_fcoe_msix;
7097         }
7098
7099 #endif
7100         /* any vectors left over go for VMDq support */
7101         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7102                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7103                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7104
7105                 /* if we're short on vectors for what's desired, we limit
7106                  * the queues per vmdq.  If this is still more than are
7107                  * available, the user will need to change the number of
7108                  * queues/vectors used by the PF later with the ethtool
7109                  * channels command
7110                  */
7111                 if (vmdq_vecs < vmdq_vecs_wanted)
7112                         pf->num_vmdq_qps = 1;
7113                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7114
7115                 v_budget += vmdq_vecs;
7116                 vectors_left -= vmdq_vecs;
7117         }
7118
7119         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7120                                    GFP_KERNEL);
7121         if (!pf->msix_entries)
7122                 return -ENOMEM;
7123
7124         for (i = 0; i < v_budget; i++)
7125                 pf->msix_entries[i].entry = i;
7126         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7127
7128         if (v_actual != v_budget) {
7129                 /* If we have limited resources, we will start with no vectors
7130                  * for the special features and then allocate vectors to some
7131                  * of these features based on the policy and at the end disable
7132                  * the features that did not get any vectors.
7133                  */
7134 #ifdef I40E_FCOE
7135                 pf->num_fcoe_qps = 0;
7136                 pf->num_fcoe_msix = 0;
7137 #endif
7138                 pf->num_vmdq_msix = 0;
7139         }
7140
7141         if (v_actual < I40E_MIN_MSIX) {
7142                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7143                 kfree(pf->msix_entries);
7144                 pf->msix_entries = NULL;
7145                 return -ENODEV;
7146
7147         } else if (v_actual == I40E_MIN_MSIX) {
7148                 /* Adjust for minimal MSIX use */
7149                 pf->num_vmdq_vsis = 0;
7150                 pf->num_vmdq_qps = 0;
7151                 pf->num_lan_qps = 1;
7152                 pf->num_lan_msix = 1;
7153
7154         } else if (v_actual != v_budget) {
7155                 int vec;
7156
7157                 /* reserve the misc vector */
7158                 vec = v_actual - 1;
7159
7160                 /* Scale vector usage down */
7161                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7162                 pf->num_vmdq_vsis = 1;
7163                 pf->num_vmdq_qps = 1;
7164                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7165
7166                 /* partition out the remaining vectors */
7167                 switch (vec) {
7168                 case 2:
7169                         pf->num_lan_msix = 1;
7170                         break;
7171                 case 3:
7172 #ifdef I40E_FCOE
7173                         /* give one vector to FCoE */
7174                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7175                                 pf->num_lan_msix = 1;
7176                                 pf->num_fcoe_msix = 1;
7177                         }
7178 #else
7179                         pf->num_lan_msix = 2;
7180 #endif
7181                         break;
7182                 default:
7183 #ifdef I40E_FCOE
7184                         /* give one vector to FCoE */
7185                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7186                                 pf->num_fcoe_msix = 1;
7187                                 vec--;
7188                         }
7189 #endif
7190                         /* give the rest to the PF */
7191                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7192                         break;
7193                 }
7194         }
7195
7196         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7197             (pf->num_vmdq_msix == 0)) {
7198                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7199                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7200         }
7201 #ifdef I40E_FCOE
7202
7203         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7204                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7205                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7206         }
7207 #endif
7208         return v_actual;
7209 }
7210
7211 /**
7212  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7213  * @vsi: the VSI being configured
7214  * @v_idx: index of the vector in the vsi struct
7215  *
7216  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7217  **/
7218 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7219 {
7220         struct i40e_q_vector *q_vector;
7221
7222         /* allocate q_vector */
7223         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7224         if (!q_vector)
7225                 return -ENOMEM;
7226
7227         q_vector->vsi = vsi;
7228         q_vector->v_idx = v_idx;
7229         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7230         if (vsi->netdev)
7231                 netif_napi_add(vsi->netdev, &q_vector->napi,
7232                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7233
7234         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7235         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7236
7237         /* tie q_vector and vsi together */
7238         vsi->q_vectors[v_idx] = q_vector;
7239
7240         return 0;
7241 }
7242
7243 /**
7244  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7245  * @vsi: the VSI being configured
7246  *
7247  * We allocate one q_vector per queue interrupt.  If allocation fails we
7248  * return -ENOMEM.
7249  **/
7250 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7251 {
7252         struct i40e_pf *pf = vsi->back;
7253         int v_idx, num_q_vectors;
7254         int err;
7255
7256         /* if not MSIX, give the one vector only to the LAN VSI */
7257         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7258                 num_q_vectors = vsi->num_q_vectors;
7259         else if (vsi == pf->vsi[pf->lan_vsi])
7260                 num_q_vectors = 1;
7261         else
7262                 return -EINVAL;
7263
7264         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7265                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7266                 if (err)
7267                         goto err_out;
7268         }
7269
7270         return 0;
7271
7272 err_out:
7273         while (v_idx--)
7274                 i40e_free_q_vector(vsi, v_idx);
7275
7276         return err;
7277 }
7278
7279 /**
7280  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7281  * @pf: board private structure to initialize
7282  **/
7283 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
7284 {
7285         int vectors = 0;
7286         ssize_t size;
7287
7288         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7289                 vectors = i40e_init_msix(pf);
7290                 if (vectors < 0) {
7291                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7292 #ifdef I40E_FCOE
7293                                        I40E_FLAG_FCOE_ENABLED   |
7294 #endif
7295                                        I40E_FLAG_RSS_ENABLED    |
7296                                        I40E_FLAG_DCB_CAPABLE    |
7297                                        I40E_FLAG_SRIOV_ENABLED  |
7298                                        I40E_FLAG_FD_SB_ENABLED  |
7299                                        I40E_FLAG_FD_ATR_ENABLED |
7300                                        I40E_FLAG_VMDQ_ENABLED);
7301
7302                         /* rework the queue expectations without MSIX */
7303                         i40e_determine_queue_usage(pf);
7304                 }
7305         }
7306
7307         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7308             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7309                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7310                 vectors = pci_enable_msi(pf->pdev);
7311                 if (vectors < 0) {
7312                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7313                                  vectors);
7314                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7315                 }
7316                 vectors = 1;  /* one MSI or Legacy vector */
7317         }
7318
7319         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7320                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7321
7322         /* set up vector assignment tracking */
7323         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7324         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7325         pf->irq_pile->num_entries = vectors;
7326         pf->irq_pile->search_hint = 0;
7327
7328         /* track first vector for misc interrupts */
7329         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7330 }
7331
7332 /**
7333  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7334  * @pf: board private structure
7335  *
7336  * This sets up the handler for MSIX 0, which is used to manage the
7337  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7338  * when in MSI or Legacy interrupt mode.
7339  **/
7340 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7341 {
7342         struct i40e_hw *hw = &pf->hw;
7343         int err = 0;
7344
7345         /* Only request the irq if this is the first time through, and
7346          * not when we're rebuilding after a Reset
7347          */
7348         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7349                 err = request_irq(pf->msix_entries[0].vector,
7350                                   i40e_intr, 0, pf->int_name, pf);
7351                 if (err) {
7352                         dev_info(&pf->pdev->dev,
7353                                  "request_irq for %s failed: %d\n",
7354                                  pf->int_name, err);
7355                         return -EFAULT;
7356                 }
7357         }
7358
7359         i40e_enable_misc_int_causes(pf);
7360
7361         /* associate no queues to the misc vector */
7362         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7363         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7364
7365         i40e_flush(hw);
7366
7367         i40e_irq_dynamic_enable_icr0(pf);
7368
7369         return err;
7370 }
7371
7372 /**
7373  * i40e_config_rss - Prepare for RSS if used
7374  * @pf: board private structure
7375  **/
7376 static int i40e_config_rss(struct i40e_pf *pf)
7377 {
7378         u32 rss_key[I40E_PFQF_HKEY_MAX_INDEX + 1];
7379         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7380         struct i40e_hw *hw = &pf->hw;
7381         u32 lut = 0;
7382         int i, j;
7383         u64 hena;
7384         u32 reg_val;
7385
7386         netdev_rss_key_fill(rss_key, sizeof(rss_key));
7387         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7388                 wr32(hw, I40E_PFQF_HKEY(i), rss_key[i]);
7389
7390         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7391         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7392                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7393         hena |= I40E_DEFAULT_RSS_HENA;
7394         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7395         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7396
7397         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7398
7399         /* Check capability and Set table size and register per hw expectation*/
7400         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7401         if (pf->rss_table_size == 512)
7402                 reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7403         else
7404                 reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7405         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7406
7407         /* Populate the LUT with max no. of queues in round robin fashion */
7408         for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
7409
7410                 /* The assumption is that lan qp count will be the highest
7411                  * qp count for any PF VSI that needs RSS.
7412                  * If multiple VSIs need RSS support, all the qp counts
7413                  * for those VSIs should be a power of 2 for RSS to work.
7414                  * If LAN VSI is the only consumer for RSS then this requirement
7415                  * is not necessary.
7416                  */
7417                 if (j == vsi->rss_size)
7418                         j = 0;
7419                 /* lut = 4-byte sliding window of 4 lut entries */
7420                 lut = (lut << 8) | (j &
7421                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
7422                 /* On i = 3, we have 4 entries in lut; write to the register */
7423                 if ((i & 3) == 3)
7424                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
7425         }
7426         i40e_flush(hw);
7427
7428         return 0;
7429 }
7430
7431 /**
7432  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7433  * @pf: board private structure
7434  * @queue_count: the requested queue count for rss.
7435  *
7436  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7437  * count which may be different from the requested queue count.
7438  **/
7439 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7440 {
7441         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7442         int new_rss_size;
7443
7444         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7445                 return 0;
7446
7447         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7448
7449         if (queue_count != vsi->num_queue_pairs) {
7450                 vsi->req_queue_pairs = queue_count;
7451                 i40e_prep_for_reset(pf);
7452
7453                 pf->rss_size = new_rss_size;
7454
7455                 i40e_reset_and_rebuild(pf, true);
7456                 i40e_config_rss(pf);
7457         }
7458         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7459         return pf->rss_size;
7460 }
7461
7462 /**
7463  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7464  * @pf: board private structure
7465  **/
7466 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7467 {
7468         i40e_status status;
7469         bool min_valid, max_valid;
7470         u32 max_bw, min_bw;
7471
7472         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7473                                            &min_valid, &max_valid);
7474
7475         if (!status) {
7476                 if (min_valid)
7477                         pf->npar_min_bw = min_bw;
7478                 if (max_valid)
7479                         pf->npar_max_bw = max_bw;
7480         }
7481
7482         return status;
7483 }
7484
7485 /**
7486  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7487  * @pf: board private structure
7488  **/
7489 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7490 {
7491         struct i40e_aqc_configure_partition_bw_data bw_data;
7492         i40e_status status;
7493
7494         /* Set the valid bit for this PF */
7495         bw_data.pf_valid_bits = cpu_to_le16(1 << pf->hw.pf_id);
7496         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7497         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7498
7499         /* Set the new bandwidths */
7500         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7501
7502         return status;
7503 }
7504
7505 /**
7506  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7507  * @pf: board private structure
7508  **/
7509 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7510 {
7511         /* Commit temporary BW setting to permanent NVM image */
7512         enum i40e_admin_queue_err last_aq_status;
7513         i40e_status ret;
7514         u16 nvm_word;
7515
7516         if (pf->hw.partition_id != 1) {
7517                 dev_info(&pf->pdev->dev,
7518                          "Commit BW only works on partition 1! This is partition %d",
7519                          pf->hw.partition_id);
7520                 ret = I40E_NOT_SUPPORTED;
7521                 goto bw_commit_out;
7522         }
7523
7524         /* Acquire NVM for read access */
7525         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7526         last_aq_status = pf->hw.aq.asq_last_status;
7527         if (ret) {
7528                 dev_info(&pf->pdev->dev,
7529                          "Cannot acquire NVM for read access, err %d: aq_err %d\n",
7530                          ret, last_aq_status);
7531                 goto bw_commit_out;
7532         }
7533
7534         /* Read word 0x10 of NVM - SW compatibility word 1 */
7535         ret = i40e_aq_read_nvm(&pf->hw,
7536                                I40E_SR_NVM_CONTROL_WORD,
7537                                0x10, sizeof(nvm_word), &nvm_word,
7538                                false, NULL);
7539         /* Save off last admin queue command status before releasing
7540          * the NVM
7541          */
7542         last_aq_status = pf->hw.aq.asq_last_status;
7543         i40e_release_nvm(&pf->hw);
7544         if (ret) {
7545                 dev_info(&pf->pdev->dev, "NVM read error, err %d aq_err %d\n",
7546                          ret, last_aq_status);
7547                 goto bw_commit_out;
7548         }
7549
7550         /* Wait a bit for NVM release to complete */
7551         msleep(50);
7552
7553         /* Acquire NVM for write access */
7554         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7555         last_aq_status = pf->hw.aq.asq_last_status;
7556         if (ret) {
7557                 dev_info(&pf->pdev->dev,
7558                          "Cannot acquire NVM for write access, err %d: aq_err %d\n",
7559                          ret, last_aq_status);
7560                 goto bw_commit_out;
7561         }
7562         /* Write it back out unchanged to initiate update NVM,
7563          * which will force a write of the shadow (alt) RAM to
7564          * the NVM - thus storing the bandwidth values permanently.
7565          */
7566         ret = i40e_aq_update_nvm(&pf->hw,
7567                                  I40E_SR_NVM_CONTROL_WORD,
7568                                  0x10, sizeof(nvm_word),
7569                                  &nvm_word, true, NULL);
7570         /* Save off last admin queue command status before releasing
7571          * the NVM
7572          */
7573         last_aq_status = pf->hw.aq.asq_last_status;
7574         i40e_release_nvm(&pf->hw);
7575         if (ret)
7576                 dev_info(&pf->pdev->dev,
7577                          "BW settings NOT SAVED, err %d aq_err %d\n",
7578                          ret, last_aq_status);
7579 bw_commit_out:
7580
7581         return ret;
7582 }
7583
7584 /**
7585  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7586  * @pf: board private structure to initialize
7587  *
7588  * i40e_sw_init initializes the Adapter private data structure.
7589  * Fields are initialized based on PCI device information and
7590  * OS network device settings (MTU size).
7591  **/
7592 static int i40e_sw_init(struct i40e_pf *pf)
7593 {
7594         int err = 0;
7595         int size;
7596
7597         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7598                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7599         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7600         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7601                 if (I40E_DEBUG_USER & debug)
7602                         pf->hw.debug_mask = debug;
7603                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7604                                                 I40E_DEFAULT_MSG_ENABLE);
7605         }
7606
7607         /* Set default capability flags */
7608         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7609                     I40E_FLAG_MSI_ENABLED     |
7610                     I40E_FLAG_MSIX_ENABLED;
7611
7612         if (iommu_present(&pci_bus_type))
7613                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7614         else
7615                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7616
7617         /* Set default ITR */
7618         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7619         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7620
7621         /* Depending on PF configurations, it is possible that the RSS
7622          * maximum might end up larger than the available queues
7623          */
7624         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
7625         pf->rss_size = 1;
7626         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7627         pf->rss_size_max = min_t(int, pf->rss_size_max,
7628                                  pf->hw.func_caps.num_tx_qp);
7629         if (pf->hw.func_caps.rss) {
7630                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7631                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7632         }
7633
7634         /* MFP mode enabled */
7635         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
7636                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7637                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7638                 if (i40e_get_npar_bw_setting(pf))
7639                         dev_warn(&pf->pdev->dev,
7640                                  "Could not get NPAR bw settings\n");
7641                 else
7642                         dev_info(&pf->pdev->dev,
7643                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7644                                  pf->npar_min_bw, pf->npar_max_bw);
7645         }
7646
7647         /* FW/NVM is not yet fixed in this regard */
7648         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7649             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7650                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7651                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7652                 /* Setup a counter for fd_atr per PF */
7653                 pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
7654                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7655                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7656                         /* Setup a counter for fd_sb per PF */
7657                         pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
7658                 } else {
7659                         dev_info(&pf->pdev->dev,
7660                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7661                 }
7662                 pf->fdir_pf_filter_count =
7663                                  pf->hw.func_caps.fd_filters_guaranteed;
7664                 pf->hw.fdir_shared_filter_count =
7665                                  pf->hw.func_caps.fd_filters_best_effort;
7666         }
7667
7668         if (pf->hw.func_caps.vmdq) {
7669                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7670                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7671                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
7672         }
7673
7674 #ifdef I40E_FCOE
7675         err = i40e_init_pf_fcoe(pf);
7676         if (err)
7677                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7678
7679 #endif /* I40E_FCOE */
7680 #ifdef CONFIG_PCI_IOV
7681         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7682                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7683                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7684                 pf->num_req_vfs = min_t(int,
7685                                         pf->hw.func_caps.num_vfs,
7686                                         I40E_MAX_VF_COUNT);
7687         }
7688 #endif /* CONFIG_PCI_IOV */
7689         pf->eeprom_version = 0xDEAD;
7690         pf->lan_veb = I40E_NO_VEB;
7691         pf->lan_vsi = I40E_NO_VSI;
7692
7693         /* set up queue assignment tracking */
7694         size = sizeof(struct i40e_lump_tracking)
7695                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7696         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7697         if (!pf->qp_pile) {
7698                 err = -ENOMEM;
7699                 goto sw_init_done;
7700         }
7701         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7702         pf->qp_pile->search_hint = 0;
7703
7704         pf->tx_timeout_recovery_level = 1;
7705
7706         mutex_init(&pf->switch_mutex);
7707
7708         /* If NPAR is enabled nudge the Tx scheduler */
7709         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
7710                 i40e_set_npar_bw_setting(pf);
7711
7712 sw_init_done:
7713         return err;
7714 }
7715
7716 /**
7717  * i40e_set_ntuple - set the ntuple feature flag and take action
7718  * @pf: board private structure to initialize
7719  * @features: the feature set that the stack is suggesting
7720  *
7721  * returns a bool to indicate if reset needs to happen
7722  **/
7723 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7724 {
7725         bool need_reset = false;
7726
7727         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7728          * the state changed, we need to reset.
7729          */
7730         if (features & NETIF_F_NTUPLE) {
7731                 /* Enable filters and mark for reset */
7732                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7733                         need_reset = true;
7734                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7735         } else {
7736                 /* turn off filters, mark for reset and clear SW filter list */
7737                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7738                         need_reset = true;
7739                         i40e_fdir_filter_exit(pf);
7740                 }
7741                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7742                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7743                 /* reset fd counters */
7744                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7745                 pf->fdir_pf_active_filters = 0;
7746                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7747                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7748                 /* if ATR was auto disabled it can be re-enabled. */
7749                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
7750                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
7751                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
7752         }
7753         return need_reset;
7754 }
7755
7756 /**
7757  * i40e_set_features - set the netdev feature flags
7758  * @netdev: ptr to the netdev being adjusted
7759  * @features: the feature set that the stack is suggesting
7760  **/
7761 static int i40e_set_features(struct net_device *netdev,
7762                              netdev_features_t features)
7763 {
7764         struct i40e_netdev_priv *np = netdev_priv(netdev);
7765         struct i40e_vsi *vsi = np->vsi;
7766         struct i40e_pf *pf = vsi->back;
7767         bool need_reset;
7768
7769         if (features & NETIF_F_HW_VLAN_CTAG_RX)
7770                 i40e_vlan_stripping_enable(vsi);
7771         else
7772                 i40e_vlan_stripping_disable(vsi);
7773
7774         need_reset = i40e_set_ntuple(pf, features);
7775
7776         if (need_reset)
7777                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7778
7779         return 0;
7780 }
7781
7782 #ifdef CONFIG_I40E_VXLAN
7783 /**
7784  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
7785  * @pf: board private structure
7786  * @port: The UDP port to look up
7787  *
7788  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
7789  **/
7790 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
7791 {
7792         u8 i;
7793
7794         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7795                 if (pf->vxlan_ports[i] == port)
7796                         return i;
7797         }
7798
7799         return i;
7800 }
7801
7802 /**
7803  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
7804  * @netdev: This physical port's netdev
7805  * @sa_family: Socket Family that VXLAN is notifying us about
7806  * @port: New UDP port number that VXLAN started listening to
7807  **/
7808 static void i40e_add_vxlan_port(struct net_device *netdev,
7809                                 sa_family_t sa_family, __be16 port)
7810 {
7811         struct i40e_netdev_priv *np = netdev_priv(netdev);
7812         struct i40e_vsi *vsi = np->vsi;
7813         struct i40e_pf *pf = vsi->back;
7814         u8 next_idx;
7815         u8 idx;
7816
7817         if (sa_family == AF_INET6)
7818                 return;
7819
7820         idx = i40e_get_vxlan_port_idx(pf, port);
7821
7822         /* Check if port already exists */
7823         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7824                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
7825                 return;
7826         }
7827
7828         /* Now check if there is space to add the new port */
7829         next_idx = i40e_get_vxlan_port_idx(pf, 0);
7830
7831         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7832                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
7833                             ntohs(port));
7834                 return;
7835         }
7836
7837         /* New port: add it and mark its index in the bitmap */
7838         pf->vxlan_ports[next_idx] = port;
7839         pf->pending_vxlan_bitmap |= (1 << next_idx);
7840
7841         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7842 }
7843
7844 /**
7845  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
7846  * @netdev: This physical port's netdev
7847  * @sa_family: Socket Family that VXLAN is notifying us about
7848  * @port: UDP port number that VXLAN stopped listening to
7849  **/
7850 static void i40e_del_vxlan_port(struct net_device *netdev,
7851                                 sa_family_t sa_family, __be16 port)
7852 {
7853         struct i40e_netdev_priv *np = netdev_priv(netdev);
7854         struct i40e_vsi *vsi = np->vsi;
7855         struct i40e_pf *pf = vsi->back;
7856         u8 idx;
7857
7858         if (sa_family == AF_INET6)
7859                 return;
7860
7861         idx = i40e_get_vxlan_port_idx(pf, port);
7862
7863         /* Check if port already exists */
7864         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7865                 /* if port exists, set it to 0 (mark for deletion)
7866                  * and make it pending
7867                  */
7868                 pf->vxlan_ports[idx] = 0;
7869
7870                 pf->pending_vxlan_bitmap |= (1 << idx);
7871
7872                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7873         } else {
7874                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
7875                             ntohs(port));
7876         }
7877 }
7878
7879 #endif
7880 static int i40e_get_phys_port_id(struct net_device *netdev,
7881                                  struct netdev_phys_item_id *ppid)
7882 {
7883         struct i40e_netdev_priv *np = netdev_priv(netdev);
7884         struct i40e_pf *pf = np->vsi->back;
7885         struct i40e_hw *hw = &pf->hw;
7886
7887         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
7888                 return -EOPNOTSUPP;
7889
7890         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
7891         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
7892
7893         return 0;
7894 }
7895
7896 /**
7897  * i40e_ndo_fdb_add - add an entry to the hardware database
7898  * @ndm: the input from the stack
7899  * @tb: pointer to array of nladdr (unused)
7900  * @dev: the net device pointer
7901  * @addr: the MAC address entry being added
7902  * @flags: instructions from stack about fdb operation
7903  */
7904 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
7905                             struct net_device *dev,
7906                             const unsigned char *addr, u16 vid,
7907                             u16 flags)
7908 {
7909         struct i40e_netdev_priv *np = netdev_priv(dev);
7910         struct i40e_pf *pf = np->vsi->back;
7911         int err = 0;
7912
7913         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
7914                 return -EOPNOTSUPP;
7915
7916         if (vid) {
7917                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
7918                 return -EINVAL;
7919         }
7920
7921         /* Hardware does not support aging addresses so if a
7922          * ndm_state is given only allow permanent addresses
7923          */
7924         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
7925                 netdev_info(dev, "FDB only supports static addresses\n");
7926                 return -EINVAL;
7927         }
7928
7929         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
7930                 err = dev_uc_add_excl(dev, addr);
7931         else if (is_multicast_ether_addr(addr))
7932                 err = dev_mc_add_excl(dev, addr);
7933         else
7934                 err = -EINVAL;
7935
7936         /* Only return duplicate errors if NLM_F_EXCL is set */
7937         if (err == -EEXIST && !(flags & NLM_F_EXCL))
7938                 err = 0;
7939
7940         return err;
7941 }
7942
7943 #ifdef HAVE_BRIDGE_ATTRIBS
7944 /**
7945  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
7946  * @dev: the netdev being configured
7947  * @nlh: RTNL message
7948  *
7949  * Inserts a new hardware bridge if not already created and
7950  * enables the bridging mode requested (VEB or VEPA). If the
7951  * hardware bridge has already been inserted and the request
7952  * is to change the mode then that requires a PF reset to
7953  * allow rebuild of the components with required hardware
7954  * bridge mode enabled.
7955  **/
7956 static int i40e_ndo_bridge_setlink(struct net_device *dev,
7957                                    struct nlmsghdr *nlh)
7958 {
7959         struct i40e_netdev_priv *np = netdev_priv(dev);
7960         struct i40e_vsi *vsi = np->vsi;
7961         struct i40e_pf *pf = vsi->back;
7962         struct i40e_veb *veb = NULL;
7963         struct nlattr *attr, *br_spec;
7964         int i, rem;
7965
7966         /* Only for PF VSI for now */
7967         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
7968                 return -EOPNOTSUPP;
7969
7970         /* Find the HW bridge for PF VSI */
7971         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7972                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7973                         veb = pf->veb[i];
7974         }
7975
7976         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
7977
7978         nla_for_each_nested(attr, br_spec, rem) {
7979                 __u16 mode;
7980
7981                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
7982                         continue;
7983
7984                 mode = nla_get_u16(attr);
7985                 if ((mode != BRIDGE_MODE_VEPA) &&
7986                     (mode != BRIDGE_MODE_VEB))
7987                         return -EINVAL;
7988
7989                 /* Insert a new HW bridge */
7990                 if (!veb) {
7991                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
7992                                              vsi->tc_config.enabled_tc);
7993                         if (veb) {
7994                                 veb->bridge_mode = mode;
7995                                 i40e_config_bridge_mode(veb);
7996                         } else {
7997                                 /* No Bridge HW offload available */
7998                                 return -ENOENT;
7999                         }
8000                         break;
8001                 } else if (mode != veb->bridge_mode) {
8002                         /* Existing HW bridge but different mode needs reset */
8003                         veb->bridge_mode = mode;
8004                         i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
8005                         break;
8006                 }
8007         }
8008
8009         return 0;
8010 }
8011
8012 /**
8013  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8014  * @skb: skb buff
8015  * @pid: process id
8016  * @seq: RTNL message seq #
8017  * @dev: the netdev being configured
8018  * @filter_mask: unused
8019  *
8020  * Return the mode in which the hardware bridge is operating in
8021  * i.e VEB or VEPA.
8022  **/
8023 #ifdef HAVE_BRIDGE_FILTER
8024 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8025                                    struct net_device *dev,
8026                                    u32 __always_unused filter_mask)
8027 #else
8028 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8029                                    struct net_device *dev)
8030 #endif /* HAVE_BRIDGE_FILTER */
8031 {
8032         struct i40e_netdev_priv *np = netdev_priv(dev);
8033         struct i40e_vsi *vsi = np->vsi;
8034         struct i40e_pf *pf = vsi->back;
8035         struct i40e_veb *veb = NULL;
8036         int i;
8037
8038         /* Only for PF VSI for now */
8039         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8040                 return -EOPNOTSUPP;
8041
8042         /* Find the HW bridge for the PF VSI */
8043         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8044                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8045                         veb = pf->veb[i];
8046         }
8047
8048         if (!veb)
8049                 return 0;
8050
8051         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode);
8052 }
8053 #endif /* HAVE_BRIDGE_ATTRIBS */
8054
8055 static const struct net_device_ops i40e_netdev_ops = {
8056         .ndo_open               = i40e_open,
8057         .ndo_stop               = i40e_close,
8058         .ndo_start_xmit         = i40e_lan_xmit_frame,
8059         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8060         .ndo_set_rx_mode        = i40e_set_rx_mode,
8061         .ndo_validate_addr      = eth_validate_addr,
8062         .ndo_set_mac_address    = i40e_set_mac,
8063         .ndo_change_mtu         = i40e_change_mtu,
8064         .ndo_do_ioctl           = i40e_ioctl,
8065         .ndo_tx_timeout         = i40e_tx_timeout,
8066         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8067         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8068 #ifdef CONFIG_NET_POLL_CONTROLLER
8069         .ndo_poll_controller    = i40e_netpoll,
8070 #endif
8071         .ndo_setup_tc           = i40e_setup_tc,
8072 #ifdef I40E_FCOE
8073         .ndo_fcoe_enable        = i40e_fcoe_enable,
8074         .ndo_fcoe_disable       = i40e_fcoe_disable,
8075 #endif
8076         .ndo_set_features       = i40e_set_features,
8077         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8078         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8079         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8080         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8081         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8082         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8083 #ifdef CONFIG_I40E_VXLAN
8084         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8085         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8086 #endif
8087         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8088         .ndo_fdb_add            = i40e_ndo_fdb_add,
8089 #ifdef HAVE_BRIDGE_ATTRIBS
8090         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8091         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8092 #endif /* HAVE_BRIDGE_ATTRIBS */
8093 };
8094
8095 /**
8096  * i40e_config_netdev - Setup the netdev flags
8097  * @vsi: the VSI being configured
8098  *
8099  * Returns 0 on success, negative value on failure
8100  **/
8101 static int i40e_config_netdev(struct i40e_vsi *vsi)
8102 {
8103         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8104         struct i40e_pf *pf = vsi->back;
8105         struct i40e_hw *hw = &pf->hw;
8106         struct i40e_netdev_priv *np;
8107         struct net_device *netdev;
8108         u8 mac_addr[ETH_ALEN];
8109         int etherdev_size;
8110
8111         etherdev_size = sizeof(struct i40e_netdev_priv);
8112         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8113         if (!netdev)
8114                 return -ENOMEM;
8115
8116         vsi->netdev = netdev;
8117         np = netdev_priv(netdev);
8118         np->vsi = vsi;
8119
8120         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8121                                   NETIF_F_GSO_UDP_TUNNEL |
8122                                   NETIF_F_TSO;
8123
8124         netdev->features = NETIF_F_SG                  |
8125                            NETIF_F_IP_CSUM             |
8126                            NETIF_F_SCTP_CSUM           |
8127                            NETIF_F_HIGHDMA             |
8128                            NETIF_F_GSO_UDP_TUNNEL      |
8129                            NETIF_F_HW_VLAN_CTAG_TX     |
8130                            NETIF_F_HW_VLAN_CTAG_RX     |
8131                            NETIF_F_HW_VLAN_CTAG_FILTER |
8132                            NETIF_F_IPV6_CSUM           |
8133                            NETIF_F_TSO                 |
8134                            NETIF_F_TSO_ECN             |
8135                            NETIF_F_TSO6                |
8136                            NETIF_F_RXCSUM              |
8137                            NETIF_F_RXHASH              |
8138                            0;
8139
8140         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8141                 netdev->features |= NETIF_F_NTUPLE;
8142
8143         /* copy netdev features into list of user selectable features */
8144         netdev->hw_features |= netdev->features;
8145
8146         if (vsi->type == I40E_VSI_MAIN) {
8147                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8148                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8149                 /* The following steps are necessary to prevent reception
8150                  * of tagged packets - some older NVM configurations load a
8151                  * default a MAC-VLAN filter that accepts any tagged packet
8152                  * which must be replaced by a normal filter.
8153                  */
8154                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
8155                         i40e_add_filter(vsi, mac_addr,
8156                                         I40E_VLAN_ANY, false, true);
8157         } else {
8158                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8159                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8160                          pf->vsi[pf->lan_vsi]->netdev->name);
8161                 random_ether_addr(mac_addr);
8162                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8163         }
8164         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8165
8166         ether_addr_copy(netdev->dev_addr, mac_addr);
8167         ether_addr_copy(netdev->perm_addr, mac_addr);
8168         /* vlan gets same features (except vlan offload)
8169          * after any tweaks for specific VSI types
8170          */
8171         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8172                                                      NETIF_F_HW_VLAN_CTAG_RX |
8173                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8174         netdev->priv_flags |= IFF_UNICAST_FLT;
8175         netdev->priv_flags |= IFF_SUPP_NOFCS;
8176         /* Setup netdev TC information */
8177         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8178
8179         netdev->netdev_ops = &i40e_netdev_ops;
8180         netdev->watchdog_timeo = 5 * HZ;
8181         i40e_set_ethtool_ops(netdev);
8182 #ifdef I40E_FCOE
8183         i40e_fcoe_config_netdev(netdev, vsi);
8184 #endif
8185
8186         return 0;
8187 }
8188
8189 /**
8190  * i40e_vsi_delete - Delete a VSI from the switch
8191  * @vsi: the VSI being removed
8192  *
8193  * Returns 0 on success, negative value on failure
8194  **/
8195 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8196 {
8197         /* remove default VSI is not allowed */
8198         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8199                 return;
8200
8201         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8202 }
8203
8204 /**
8205  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8206  * @vsi: the VSI being queried
8207  *
8208  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8209  **/
8210 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8211 {
8212         struct i40e_veb *veb;
8213         struct i40e_pf *pf = vsi->back;
8214
8215         /* Uplink is not a bridge so default to VEB */
8216         if (vsi->veb_idx == I40E_NO_VEB)
8217                 return 1;
8218
8219         veb = pf->veb[vsi->veb_idx];
8220         /* Uplink is a bridge in VEPA mode */
8221         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8222                 return 0;
8223
8224         /* Uplink is a bridge in VEB mode */
8225         return 1;
8226 }
8227
8228 /**
8229  * i40e_add_vsi - Add a VSI to the switch
8230  * @vsi: the VSI being configured
8231  *
8232  * This initializes a VSI context depending on the VSI type to be added and
8233  * passes it down to the add_vsi aq command.
8234  **/
8235 static int i40e_add_vsi(struct i40e_vsi *vsi)
8236 {
8237         int ret = -ENODEV;
8238         struct i40e_mac_filter *f, *ftmp;
8239         struct i40e_pf *pf = vsi->back;
8240         struct i40e_hw *hw = &pf->hw;
8241         struct i40e_vsi_context ctxt;
8242         u8 enabled_tc = 0x1; /* TC0 enabled */
8243         int f_count = 0;
8244
8245         memset(&ctxt, 0, sizeof(ctxt));
8246         switch (vsi->type) {
8247         case I40E_VSI_MAIN:
8248                 /* The PF's main VSI is already setup as part of the
8249                  * device initialization, so we'll not bother with
8250                  * the add_vsi call, but we will retrieve the current
8251                  * VSI context.
8252                  */
8253                 ctxt.seid = pf->main_vsi_seid;
8254                 ctxt.pf_num = pf->hw.pf_id;
8255                 ctxt.vf_num = 0;
8256                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8257                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8258                 if (ret) {
8259                         dev_info(&pf->pdev->dev,
8260                                  "couldn't get PF vsi config, err %d, aq_err %d\n",
8261                                  ret, pf->hw.aq.asq_last_status);
8262                         return -ENOENT;
8263                 }
8264                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
8265                 vsi->info.valid_sections = 0;
8266
8267                 vsi->seid = ctxt.seid;
8268                 vsi->id = ctxt.vsi_number;
8269
8270                 enabled_tc = i40e_pf_get_tc_map(pf);
8271
8272                 /* MFP mode setup queue map and update VSI */
8273                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8274                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8275                         memset(&ctxt, 0, sizeof(ctxt));
8276                         ctxt.seid = pf->main_vsi_seid;
8277                         ctxt.pf_num = pf->hw.pf_id;
8278                         ctxt.vf_num = 0;
8279                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8280                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8281                         if (ret) {
8282                                 dev_info(&pf->pdev->dev,
8283                                          "update vsi failed, aq_err=%d\n",
8284                                          pf->hw.aq.asq_last_status);
8285                                 ret = -ENOENT;
8286                                 goto err;
8287                         }
8288                         /* update the local VSI info queue map */
8289                         i40e_vsi_update_queue_map(vsi, &ctxt);
8290                         vsi->info.valid_sections = 0;
8291                 } else {
8292                         /* Default/Main VSI is only enabled for TC0
8293                          * reconfigure it to enable all TCs that are
8294                          * available on the port in SFP mode.
8295                          * For MFP case the iSCSI PF would use this
8296                          * flow to enable LAN+iSCSI TC.
8297                          */
8298                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8299                         if (ret) {
8300                                 dev_info(&pf->pdev->dev,
8301                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
8302                                          enabled_tc, ret,
8303                                          pf->hw.aq.asq_last_status);
8304                                 ret = -ENOENT;
8305                         }
8306                 }
8307                 break;
8308
8309         case I40E_VSI_FDIR:
8310                 ctxt.pf_num = hw->pf_id;
8311                 ctxt.vf_num = 0;
8312                 ctxt.uplink_seid = vsi->uplink_seid;
8313                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8314                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8315                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8316                         ctxt.info.valid_sections |=
8317                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8318                         ctxt.info.switch_id =
8319                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8320                 }
8321                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8322                 break;
8323
8324         case I40E_VSI_VMDQ2:
8325                 ctxt.pf_num = hw->pf_id;
8326                 ctxt.vf_num = 0;
8327                 ctxt.uplink_seid = vsi->uplink_seid;
8328                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8329                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8330
8331                 /* This VSI is connected to VEB so the switch_id
8332                  * should be set to zero by default.
8333                  */
8334                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8335                         ctxt.info.valid_sections |=
8336                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8337                         ctxt.info.switch_id =
8338                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8339                 }
8340
8341                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8342                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8343                 break;
8344
8345         case I40E_VSI_SRIOV:
8346                 ctxt.pf_num = hw->pf_id;
8347                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8348                 ctxt.uplink_seid = vsi->uplink_seid;
8349                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8350                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8351
8352                 /* This VSI is connected to VEB so the switch_id
8353                  * should be set to zero by default.
8354                  */
8355                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8356                         ctxt.info.valid_sections |=
8357                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8358                         ctxt.info.switch_id =
8359                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8360                 }
8361
8362                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8363                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8364                 if (pf->vf[vsi->vf_id].spoofchk) {
8365                         ctxt.info.valid_sections |=
8366                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8367                         ctxt.info.sec_flags |=
8368                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8369                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8370                 }
8371                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8372                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8373                 break;
8374
8375 #ifdef I40E_FCOE
8376         case I40E_VSI_FCOE:
8377                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8378                 if (ret) {
8379                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8380                         return ret;
8381                 }
8382                 break;
8383
8384 #endif /* I40E_FCOE */
8385         default:
8386                 return -ENODEV;
8387         }
8388
8389         if (vsi->type != I40E_VSI_MAIN) {
8390                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8391                 if (ret) {
8392                         dev_info(&vsi->back->pdev->dev,
8393                                  "add vsi failed, aq_err=%d\n",
8394                                  vsi->back->hw.aq.asq_last_status);
8395                         ret = -ENOENT;
8396                         goto err;
8397                 }
8398                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
8399                 vsi->info.valid_sections = 0;
8400                 vsi->seid = ctxt.seid;
8401                 vsi->id = ctxt.vsi_number;
8402         }
8403
8404         /* If macvlan filters already exist, force them to get loaded */
8405         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8406                 f->changed = true;
8407                 f_count++;
8408
8409                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8410                         struct i40e_aqc_remove_macvlan_element_data element;
8411
8412                         memset(&element, 0, sizeof(element));
8413                         ether_addr_copy(element.mac_addr, f->macaddr);
8414                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8415                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8416                                                      &element, 1, NULL);
8417                         if (ret) {
8418                                 /* some older FW has a different default */
8419                                 element.flags |=
8420                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8421                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8422                                                        &element, 1, NULL);
8423                         }
8424
8425                         i40e_aq_mac_address_write(hw,
8426                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8427                                                   f->macaddr, NULL);
8428                 }
8429         }
8430         if (f_count) {
8431                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8432                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8433         }
8434
8435         /* Update VSI BW information */
8436         ret = i40e_vsi_get_bw_info(vsi);
8437         if (ret) {
8438                 dev_info(&pf->pdev->dev,
8439                          "couldn't get vsi bw info, err %d, aq_err %d\n",
8440                          ret, pf->hw.aq.asq_last_status);
8441                 /* VSI is already added so not tearing that up */
8442                 ret = 0;
8443         }
8444
8445 err:
8446         return ret;
8447 }
8448
8449 /**
8450  * i40e_vsi_release - Delete a VSI and free its resources
8451  * @vsi: the VSI being removed
8452  *
8453  * Returns 0 on success or < 0 on error
8454  **/
8455 int i40e_vsi_release(struct i40e_vsi *vsi)
8456 {
8457         struct i40e_mac_filter *f, *ftmp;
8458         struct i40e_veb *veb = NULL;
8459         struct i40e_pf *pf;
8460         u16 uplink_seid;
8461         int i, n;
8462
8463         pf = vsi->back;
8464
8465         /* release of a VEB-owner or last VSI is not allowed */
8466         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8467                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8468                          vsi->seid, vsi->uplink_seid);
8469                 return -ENODEV;
8470         }
8471         if (vsi == pf->vsi[pf->lan_vsi] &&
8472             !test_bit(__I40E_DOWN, &pf->state)) {
8473                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8474                 return -ENODEV;
8475         }
8476
8477         uplink_seid = vsi->uplink_seid;
8478         if (vsi->type != I40E_VSI_SRIOV) {
8479                 if (vsi->netdev_registered) {
8480                         vsi->netdev_registered = false;
8481                         if (vsi->netdev) {
8482                                 /* results in a call to i40e_close() */
8483                                 unregister_netdev(vsi->netdev);
8484                         }
8485                 } else {
8486                         i40e_vsi_close(vsi);
8487                 }
8488                 i40e_vsi_disable_irq(vsi);
8489         }
8490
8491         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8492                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8493                                 f->is_vf, f->is_netdev);
8494         i40e_sync_vsi_filters(vsi);
8495
8496         i40e_vsi_delete(vsi);
8497         i40e_vsi_free_q_vectors(vsi);
8498         if (vsi->netdev) {
8499                 free_netdev(vsi->netdev);
8500                 vsi->netdev = NULL;
8501         }
8502         i40e_vsi_clear_rings(vsi);
8503         i40e_vsi_clear(vsi);
8504
8505         /* If this was the last thing on the VEB, except for the
8506          * controlling VSI, remove the VEB, which puts the controlling
8507          * VSI onto the next level down in the switch.
8508          *
8509          * Well, okay, there's one more exception here: don't remove
8510          * the orphan VEBs yet.  We'll wait for an explicit remove request
8511          * from up the network stack.
8512          */
8513         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8514                 if (pf->vsi[i] &&
8515                     pf->vsi[i]->uplink_seid == uplink_seid &&
8516                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8517                         n++;      /* count the VSIs */
8518                 }
8519         }
8520         for (i = 0; i < I40E_MAX_VEB; i++) {
8521                 if (!pf->veb[i])
8522                         continue;
8523                 if (pf->veb[i]->uplink_seid == uplink_seid)
8524                         n++;     /* count the VEBs */
8525                 if (pf->veb[i]->seid == uplink_seid)
8526                         veb = pf->veb[i];
8527         }
8528         if (n == 0 && veb && veb->uplink_seid != 0)
8529                 i40e_veb_release(veb);
8530
8531         return 0;
8532 }
8533
8534 /**
8535  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8536  * @vsi: ptr to the VSI
8537  *
8538  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8539  * corresponding SW VSI structure and initializes num_queue_pairs for the
8540  * newly allocated VSI.
8541  *
8542  * Returns 0 on success or negative on failure
8543  **/
8544 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8545 {
8546         int ret = -ENOENT;
8547         struct i40e_pf *pf = vsi->back;
8548
8549         if (vsi->q_vectors[0]) {
8550                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8551                          vsi->seid);
8552                 return -EEXIST;
8553         }
8554
8555         if (vsi->base_vector) {
8556                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8557                          vsi->seid, vsi->base_vector);
8558                 return -EEXIST;
8559         }
8560
8561         ret = i40e_vsi_alloc_q_vectors(vsi);
8562         if (ret) {
8563                 dev_info(&pf->pdev->dev,
8564                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8565                          vsi->num_q_vectors, vsi->seid, ret);
8566                 vsi->num_q_vectors = 0;
8567                 goto vector_setup_out;
8568         }
8569
8570         if (vsi->num_q_vectors)
8571                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8572                                                  vsi->num_q_vectors, vsi->idx);
8573         if (vsi->base_vector < 0) {
8574                 dev_info(&pf->pdev->dev,
8575                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8576                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8577                 i40e_vsi_free_q_vectors(vsi);
8578                 ret = -ENOENT;
8579                 goto vector_setup_out;
8580         }
8581
8582 vector_setup_out:
8583         return ret;
8584 }
8585
8586 /**
8587  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8588  * @vsi: pointer to the vsi.
8589  *
8590  * This re-allocates a vsi's queue resources.
8591  *
8592  * Returns pointer to the successfully allocated and configured VSI sw struct
8593  * on success, otherwise returns NULL on failure.
8594  **/
8595 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8596 {
8597         struct i40e_pf *pf = vsi->back;
8598         u8 enabled_tc;
8599         int ret;
8600
8601         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8602         i40e_vsi_clear_rings(vsi);
8603
8604         i40e_vsi_free_arrays(vsi, false);
8605         i40e_set_num_rings_in_vsi(vsi);
8606         ret = i40e_vsi_alloc_arrays(vsi, false);
8607         if (ret)
8608                 goto err_vsi;
8609
8610         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8611         if (ret < 0) {
8612                 dev_info(&pf->pdev->dev,
8613                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8614                          vsi->alloc_queue_pairs, vsi->seid, ret);
8615                 goto err_vsi;
8616         }
8617         vsi->base_queue = ret;
8618
8619         /* Update the FW view of the VSI. Force a reset of TC and queue
8620          * layout configurations.
8621          */
8622         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8623         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8624         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8625         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8626
8627         /* assign it some queues */
8628         ret = i40e_alloc_rings(vsi);
8629         if (ret)
8630                 goto err_rings;
8631
8632         /* map all of the rings to the q_vectors */
8633         i40e_vsi_map_rings_to_vectors(vsi);
8634         return vsi;
8635
8636 err_rings:
8637         i40e_vsi_free_q_vectors(vsi);
8638         if (vsi->netdev_registered) {
8639                 vsi->netdev_registered = false;
8640                 unregister_netdev(vsi->netdev);
8641                 free_netdev(vsi->netdev);
8642                 vsi->netdev = NULL;
8643         }
8644         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8645 err_vsi:
8646         i40e_vsi_clear(vsi);
8647         return NULL;
8648 }
8649
8650 /**
8651  * i40e_vsi_setup - Set up a VSI by a given type
8652  * @pf: board private structure
8653  * @type: VSI type
8654  * @uplink_seid: the switch element to link to
8655  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8656  *
8657  * This allocates the sw VSI structure and its queue resources, then add a VSI
8658  * to the identified VEB.
8659  *
8660  * Returns pointer to the successfully allocated and configure VSI sw struct on
8661  * success, otherwise returns NULL on failure.
8662  **/
8663 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8664                                 u16 uplink_seid, u32 param1)
8665 {
8666         struct i40e_vsi *vsi = NULL;
8667         struct i40e_veb *veb = NULL;
8668         int ret, i;
8669         int v_idx;
8670
8671         /* The requested uplink_seid must be either
8672          *     - the PF's port seid
8673          *              no VEB is needed because this is the PF
8674          *              or this is a Flow Director special case VSI
8675          *     - seid of an existing VEB
8676          *     - seid of a VSI that owns an existing VEB
8677          *     - seid of a VSI that doesn't own a VEB
8678          *              a new VEB is created and the VSI becomes the owner
8679          *     - seid of the PF VSI, which is what creates the first VEB
8680          *              this is a special case of the previous
8681          *
8682          * Find which uplink_seid we were given and create a new VEB if needed
8683          */
8684         for (i = 0; i < I40E_MAX_VEB; i++) {
8685                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8686                         veb = pf->veb[i];
8687                         break;
8688                 }
8689         }
8690
8691         if (!veb && uplink_seid != pf->mac_seid) {
8692
8693                 for (i = 0; i < pf->num_alloc_vsi; i++) {
8694                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8695                                 vsi = pf->vsi[i];
8696                                 break;
8697                         }
8698                 }
8699                 if (!vsi) {
8700                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8701                                  uplink_seid);
8702                         return NULL;
8703                 }
8704
8705                 if (vsi->uplink_seid == pf->mac_seid)
8706                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8707                                              vsi->tc_config.enabled_tc);
8708                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8709                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8710                                              vsi->tc_config.enabled_tc);
8711                 if (veb) {
8712                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
8713                                 dev_info(&vsi->back->pdev->dev,
8714                                          "%s: New VSI creation error, uplink seid of LAN VSI expected.\n",
8715                                          __func__);
8716                                 return NULL;
8717                         }
8718                         i40e_config_bridge_mode(veb);
8719                 }
8720                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8721                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8722                                 veb = pf->veb[i];
8723                 }
8724                 if (!veb) {
8725                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
8726                         return NULL;
8727                 }
8728
8729                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8730                 uplink_seid = veb->seid;
8731         }
8732
8733         /* get vsi sw struct */
8734         v_idx = i40e_vsi_mem_alloc(pf, type);
8735         if (v_idx < 0)
8736                 goto err_alloc;
8737         vsi = pf->vsi[v_idx];
8738         if (!vsi)
8739                 goto err_alloc;
8740         vsi->type = type;
8741         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
8742
8743         if (type == I40E_VSI_MAIN)
8744                 pf->lan_vsi = v_idx;
8745         else if (type == I40E_VSI_SRIOV)
8746                 vsi->vf_id = param1;
8747         /* assign it some queues */
8748         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
8749                                 vsi->idx);
8750         if (ret < 0) {
8751                 dev_info(&pf->pdev->dev,
8752                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8753                          vsi->alloc_queue_pairs, vsi->seid, ret);
8754                 goto err_vsi;
8755         }
8756         vsi->base_queue = ret;
8757
8758         /* get a VSI from the hardware */
8759         vsi->uplink_seid = uplink_seid;
8760         ret = i40e_add_vsi(vsi);
8761         if (ret)
8762                 goto err_vsi;
8763
8764         switch (vsi->type) {
8765         /* setup the netdev if needed */
8766         case I40E_VSI_MAIN:
8767         case I40E_VSI_VMDQ2:
8768         case I40E_VSI_FCOE:
8769                 ret = i40e_config_netdev(vsi);
8770                 if (ret)
8771                         goto err_netdev;
8772                 ret = register_netdev(vsi->netdev);
8773                 if (ret)
8774                         goto err_netdev;
8775                 vsi->netdev_registered = true;
8776                 netif_carrier_off(vsi->netdev);
8777 #ifdef CONFIG_I40E_DCB
8778                 /* Setup DCB netlink interface */
8779                 i40e_dcbnl_setup(vsi);
8780 #endif /* CONFIG_I40E_DCB */
8781                 /* fall through */
8782
8783         case I40E_VSI_FDIR:
8784                 /* set up vectors and rings if needed */
8785                 ret = i40e_vsi_setup_vectors(vsi);
8786                 if (ret)
8787                         goto err_msix;
8788
8789                 ret = i40e_alloc_rings(vsi);
8790                 if (ret)
8791                         goto err_rings;
8792
8793                 /* map all of the rings to the q_vectors */
8794                 i40e_vsi_map_rings_to_vectors(vsi);
8795
8796                 i40e_vsi_reset_stats(vsi);
8797                 break;
8798
8799         default:
8800                 /* no netdev or rings for the other VSI types */
8801                 break;
8802         }
8803
8804         return vsi;
8805
8806 err_rings:
8807         i40e_vsi_free_q_vectors(vsi);
8808 err_msix:
8809         if (vsi->netdev_registered) {
8810                 vsi->netdev_registered = false;
8811                 unregister_netdev(vsi->netdev);
8812                 free_netdev(vsi->netdev);
8813                 vsi->netdev = NULL;
8814         }
8815 err_netdev:
8816         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8817 err_vsi:
8818         i40e_vsi_clear(vsi);
8819 err_alloc:
8820         return NULL;
8821 }
8822
8823 /**
8824  * i40e_veb_get_bw_info - Query VEB BW information
8825  * @veb: the veb to query
8826  *
8827  * Query the Tx scheduler BW configuration data for given VEB
8828  **/
8829 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
8830 {
8831         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
8832         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
8833         struct i40e_pf *pf = veb->pf;
8834         struct i40e_hw *hw = &pf->hw;
8835         u32 tc_bw_max;
8836         int ret = 0;
8837         int i;
8838
8839         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
8840                                                   &bw_data, NULL);
8841         if (ret) {
8842                 dev_info(&pf->pdev->dev,
8843                          "query veb bw config failed, aq_err=%d\n",
8844                          hw->aq.asq_last_status);
8845                 goto out;
8846         }
8847
8848         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
8849                                                    &ets_data, NULL);
8850         if (ret) {
8851                 dev_info(&pf->pdev->dev,
8852                          "query veb bw ets config failed, aq_err=%d\n",
8853                          hw->aq.asq_last_status);
8854                 goto out;
8855         }
8856
8857         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
8858         veb->bw_max_quanta = ets_data.tc_bw_max;
8859         veb->is_abs_credits = bw_data.absolute_credits_enable;
8860         veb->enabled_tc = ets_data.tc_valid_bits;
8861         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
8862                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
8863         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
8864                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
8865                 veb->bw_tc_limit_credits[i] =
8866                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
8867                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
8868         }
8869
8870 out:
8871         return ret;
8872 }
8873
8874 /**
8875  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
8876  * @pf: board private structure
8877  *
8878  * On error: returns error code (negative)
8879  * On success: returns vsi index in PF (positive)
8880  **/
8881 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
8882 {
8883         int ret = -ENOENT;
8884         struct i40e_veb *veb;
8885         int i;
8886
8887         /* Need to protect the allocation of switch elements at the PF level */
8888         mutex_lock(&pf->switch_mutex);
8889
8890         /* VEB list may be fragmented if VEB creation/destruction has
8891          * been happening.  We can afford to do a quick scan to look
8892          * for any free slots in the list.
8893          *
8894          * find next empty veb slot, looping back around if necessary
8895          */
8896         i = 0;
8897         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
8898                 i++;
8899         if (i >= I40E_MAX_VEB) {
8900                 ret = -ENOMEM;
8901                 goto err_alloc_veb;  /* out of VEB slots! */
8902         }
8903
8904         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
8905         if (!veb) {
8906                 ret = -ENOMEM;
8907                 goto err_alloc_veb;
8908         }
8909         veb->pf = pf;
8910         veb->idx = i;
8911         veb->enabled_tc = 1;
8912
8913         pf->veb[i] = veb;
8914         ret = i;
8915 err_alloc_veb:
8916         mutex_unlock(&pf->switch_mutex);
8917         return ret;
8918 }
8919
8920 /**
8921  * i40e_switch_branch_release - Delete a branch of the switch tree
8922  * @branch: where to start deleting
8923  *
8924  * This uses recursion to find the tips of the branch to be
8925  * removed, deleting until we get back to and can delete this VEB.
8926  **/
8927 static void i40e_switch_branch_release(struct i40e_veb *branch)
8928 {
8929         struct i40e_pf *pf = branch->pf;
8930         u16 branch_seid = branch->seid;
8931         u16 veb_idx = branch->idx;
8932         int i;
8933
8934         /* release any VEBs on this VEB - RECURSION */
8935         for (i = 0; i < I40E_MAX_VEB; i++) {
8936                 if (!pf->veb[i])
8937                         continue;
8938                 if (pf->veb[i]->uplink_seid == branch->seid)
8939                         i40e_switch_branch_release(pf->veb[i]);
8940         }
8941
8942         /* Release the VSIs on this VEB, but not the owner VSI.
8943          *
8944          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
8945          *       the VEB itself, so don't use (*branch) after this loop.
8946          */
8947         for (i = 0; i < pf->num_alloc_vsi; i++) {
8948                 if (!pf->vsi[i])
8949                         continue;
8950                 if (pf->vsi[i]->uplink_seid == branch_seid &&
8951                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8952                         i40e_vsi_release(pf->vsi[i]);
8953                 }
8954         }
8955
8956         /* There's one corner case where the VEB might not have been
8957          * removed, so double check it here and remove it if needed.
8958          * This case happens if the veb was created from the debugfs
8959          * commands and no VSIs were added to it.
8960          */
8961         if (pf->veb[veb_idx])
8962                 i40e_veb_release(pf->veb[veb_idx]);
8963 }
8964
8965 /**
8966  * i40e_veb_clear - remove veb struct
8967  * @veb: the veb to remove
8968  **/
8969 static void i40e_veb_clear(struct i40e_veb *veb)
8970 {
8971         if (!veb)
8972                 return;
8973
8974         if (veb->pf) {
8975                 struct i40e_pf *pf = veb->pf;
8976
8977                 mutex_lock(&pf->switch_mutex);
8978                 if (pf->veb[veb->idx] == veb)
8979                         pf->veb[veb->idx] = NULL;
8980                 mutex_unlock(&pf->switch_mutex);
8981         }
8982
8983         kfree(veb);
8984 }
8985
8986 /**
8987  * i40e_veb_release - Delete a VEB and free its resources
8988  * @veb: the VEB being removed
8989  **/
8990 void i40e_veb_release(struct i40e_veb *veb)
8991 {
8992         struct i40e_vsi *vsi = NULL;
8993         struct i40e_pf *pf;
8994         int i, n = 0;
8995
8996         pf = veb->pf;
8997
8998         /* find the remaining VSI and check for extras */
8999         for (i = 0; i < pf->num_alloc_vsi; i++) {
9000                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9001                         n++;
9002                         vsi = pf->vsi[i];
9003                 }
9004         }
9005         if (n != 1) {
9006                 dev_info(&pf->pdev->dev,
9007                          "can't remove VEB %d with %d VSIs left\n",
9008                          veb->seid, n);
9009                 return;
9010         }
9011
9012         /* move the remaining VSI to uplink veb */
9013         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9014         if (veb->uplink_seid) {
9015                 vsi->uplink_seid = veb->uplink_seid;
9016                 if (veb->uplink_seid == pf->mac_seid)
9017                         vsi->veb_idx = I40E_NO_VEB;
9018                 else
9019                         vsi->veb_idx = veb->veb_idx;
9020         } else {
9021                 /* floating VEB */
9022                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9023                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9024         }
9025
9026         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9027         i40e_veb_clear(veb);
9028 }
9029
9030 /**
9031  * i40e_add_veb - create the VEB in the switch
9032  * @veb: the VEB to be instantiated
9033  * @vsi: the controlling VSI
9034  **/
9035 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9036 {
9037         bool is_default = false;
9038         bool is_cloud = false;
9039         int ret;
9040
9041         /* get a VEB from the hardware */
9042         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
9043                               veb->enabled_tc, is_default,
9044                               is_cloud, &veb->seid, NULL);
9045         if (ret) {
9046                 dev_info(&veb->pf->pdev->dev,
9047                          "couldn't add VEB, err %d, aq_err %d\n",
9048                          ret, veb->pf->hw.aq.asq_last_status);
9049                 return -EPERM;
9050         }
9051
9052         /* get statistics counter */
9053         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
9054                                          &veb->stats_idx, NULL, NULL, NULL);
9055         if (ret) {
9056                 dev_info(&veb->pf->pdev->dev,
9057                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
9058                          ret, veb->pf->hw.aq.asq_last_status);
9059                 return -EPERM;
9060         }
9061         ret = i40e_veb_get_bw_info(veb);
9062         if (ret) {
9063                 dev_info(&veb->pf->pdev->dev,
9064                          "couldn't get VEB bw info, err %d, aq_err %d\n",
9065                          ret, veb->pf->hw.aq.asq_last_status);
9066                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
9067                 return -ENOENT;
9068         }
9069
9070         vsi->uplink_seid = veb->seid;
9071         vsi->veb_idx = veb->idx;
9072         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9073
9074         return 0;
9075 }
9076
9077 /**
9078  * i40e_veb_setup - Set up a VEB
9079  * @pf: board private structure
9080  * @flags: VEB setup flags
9081  * @uplink_seid: the switch element to link to
9082  * @vsi_seid: the initial VSI seid
9083  * @enabled_tc: Enabled TC bit-map
9084  *
9085  * This allocates the sw VEB structure and links it into the switch
9086  * It is possible and legal for this to be a duplicate of an already
9087  * existing VEB.  It is also possible for both uplink and vsi seids
9088  * to be zero, in order to create a floating VEB.
9089  *
9090  * Returns pointer to the successfully allocated VEB sw struct on
9091  * success, otherwise returns NULL on failure.
9092  **/
9093 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9094                                 u16 uplink_seid, u16 vsi_seid,
9095                                 u8 enabled_tc)
9096 {
9097         struct i40e_veb *veb, *uplink_veb = NULL;
9098         int vsi_idx, veb_idx;
9099         int ret;
9100
9101         /* if one seid is 0, the other must be 0 to create a floating relay */
9102         if ((uplink_seid == 0 || vsi_seid == 0) &&
9103             (uplink_seid + vsi_seid != 0)) {
9104                 dev_info(&pf->pdev->dev,
9105                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9106                          uplink_seid, vsi_seid);
9107                 return NULL;
9108         }
9109
9110         /* make sure there is such a vsi and uplink */
9111         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9112                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9113                         break;
9114         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9115                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9116                          vsi_seid);
9117                 return NULL;
9118         }
9119
9120         if (uplink_seid && uplink_seid != pf->mac_seid) {
9121                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9122                         if (pf->veb[veb_idx] &&
9123                             pf->veb[veb_idx]->seid == uplink_seid) {
9124                                 uplink_veb = pf->veb[veb_idx];
9125                                 break;
9126                         }
9127                 }
9128                 if (!uplink_veb) {
9129                         dev_info(&pf->pdev->dev,
9130                                  "uplink seid %d not found\n", uplink_seid);
9131                         return NULL;
9132                 }
9133         }
9134
9135         /* get veb sw struct */
9136         veb_idx = i40e_veb_mem_alloc(pf);
9137         if (veb_idx < 0)
9138                 goto err_alloc;
9139         veb = pf->veb[veb_idx];
9140         veb->flags = flags;
9141         veb->uplink_seid = uplink_seid;
9142         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9143         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9144
9145         /* create the VEB in the switch */
9146         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9147         if (ret)
9148                 goto err_veb;
9149         if (vsi_idx == pf->lan_vsi)
9150                 pf->lan_veb = veb->idx;
9151
9152         return veb;
9153
9154 err_veb:
9155         i40e_veb_clear(veb);
9156 err_alloc:
9157         return NULL;
9158 }
9159
9160 /**
9161  * i40e_setup_pf_switch_element - set PF vars based on switch type
9162  * @pf: board private structure
9163  * @ele: element we are building info from
9164  * @num_reported: total number of elements
9165  * @printconfig: should we print the contents
9166  *
9167  * helper function to assist in extracting a few useful SEID values.
9168  **/
9169 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9170                                 struct i40e_aqc_switch_config_element_resp *ele,
9171                                 u16 num_reported, bool printconfig)
9172 {
9173         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9174         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9175         u8 element_type = ele->element_type;
9176         u16 seid = le16_to_cpu(ele->seid);
9177
9178         if (printconfig)
9179                 dev_info(&pf->pdev->dev,
9180                          "type=%d seid=%d uplink=%d downlink=%d\n",
9181                          element_type, seid, uplink_seid, downlink_seid);
9182
9183         switch (element_type) {
9184         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9185                 pf->mac_seid = seid;
9186                 break;
9187         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9188                 /* Main VEB? */
9189                 if (uplink_seid != pf->mac_seid)
9190                         break;
9191                 if (pf->lan_veb == I40E_NO_VEB) {
9192                         int v;
9193
9194                         /* find existing or else empty VEB */
9195                         for (v = 0; v < I40E_MAX_VEB; v++) {
9196                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9197                                         pf->lan_veb = v;
9198                                         break;
9199                                 }
9200                         }
9201                         if (pf->lan_veb == I40E_NO_VEB) {
9202                                 v = i40e_veb_mem_alloc(pf);
9203                                 if (v < 0)
9204                                         break;
9205                                 pf->lan_veb = v;
9206                         }
9207                 }
9208
9209                 pf->veb[pf->lan_veb]->seid = seid;
9210                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9211                 pf->veb[pf->lan_veb]->pf = pf;
9212                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9213                 break;
9214         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9215                 if (num_reported != 1)
9216                         break;
9217                 /* This is immediately after a reset so we can assume this is
9218                  * the PF's VSI
9219                  */
9220                 pf->mac_seid = uplink_seid;
9221                 pf->pf_seid = downlink_seid;
9222                 pf->main_vsi_seid = seid;
9223                 if (printconfig)
9224                         dev_info(&pf->pdev->dev,
9225                                  "pf_seid=%d main_vsi_seid=%d\n",
9226                                  pf->pf_seid, pf->main_vsi_seid);
9227                 break;
9228         case I40E_SWITCH_ELEMENT_TYPE_PF:
9229         case I40E_SWITCH_ELEMENT_TYPE_VF:
9230         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9231         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9232         case I40E_SWITCH_ELEMENT_TYPE_PE:
9233         case I40E_SWITCH_ELEMENT_TYPE_PA:
9234                 /* ignore these for now */
9235                 break;
9236         default:
9237                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9238                          element_type, seid);
9239                 break;
9240         }
9241 }
9242
9243 /**
9244  * i40e_fetch_switch_configuration - Get switch config from firmware
9245  * @pf: board private structure
9246  * @printconfig: should we print the contents
9247  *
9248  * Get the current switch configuration from the device and
9249  * extract a few useful SEID values.
9250  **/
9251 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9252 {
9253         struct i40e_aqc_get_switch_config_resp *sw_config;
9254         u16 next_seid = 0;
9255         int ret = 0;
9256         u8 *aq_buf;
9257         int i;
9258
9259         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9260         if (!aq_buf)
9261                 return -ENOMEM;
9262
9263         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9264         do {
9265                 u16 num_reported, num_total;
9266
9267                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9268                                                 I40E_AQ_LARGE_BUF,
9269                                                 &next_seid, NULL);
9270                 if (ret) {
9271                         dev_info(&pf->pdev->dev,
9272                                  "get switch config failed %d aq_err=%x\n",
9273                                  ret, pf->hw.aq.asq_last_status);
9274                         kfree(aq_buf);
9275                         return -ENOENT;
9276                 }
9277
9278                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9279                 num_total = le16_to_cpu(sw_config->header.num_total);
9280
9281                 if (printconfig)
9282                         dev_info(&pf->pdev->dev,
9283                                  "header: %d reported %d total\n",
9284                                  num_reported, num_total);
9285
9286                 for (i = 0; i < num_reported; i++) {
9287                         struct i40e_aqc_switch_config_element_resp *ele =
9288                                 &sw_config->element[i];
9289
9290                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9291                                                      printconfig);
9292                 }
9293         } while (next_seid != 0);
9294
9295         kfree(aq_buf);
9296         return ret;
9297 }
9298
9299 /**
9300  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9301  * @pf: board private structure
9302  * @reinit: if the Main VSI needs to re-initialized.
9303  *
9304  * Returns 0 on success, negative value on failure
9305  **/
9306 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9307 {
9308         int ret;
9309
9310         /* find out what's out there already */
9311         ret = i40e_fetch_switch_configuration(pf, false);
9312         if (ret) {
9313                 dev_info(&pf->pdev->dev,
9314                          "couldn't fetch switch config, err %d, aq_err %d\n",
9315                          ret, pf->hw.aq.asq_last_status);
9316                 return ret;
9317         }
9318         i40e_pf_reset_stats(pf);
9319
9320         /* first time setup */
9321         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9322                 struct i40e_vsi *vsi = NULL;
9323                 u16 uplink_seid;
9324
9325                 /* Set up the PF VSI associated with the PF's main VSI
9326                  * that is already in the HW switch
9327                  */
9328                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9329                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9330                 else
9331                         uplink_seid = pf->mac_seid;
9332                 if (pf->lan_vsi == I40E_NO_VSI)
9333                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9334                 else if (reinit)
9335                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9336                 if (!vsi) {
9337                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9338                         i40e_fdir_teardown(pf);
9339                         return -EAGAIN;
9340                 }
9341         } else {
9342                 /* force a reset of TC and queue layout configurations */
9343                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9344                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9345                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9346                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9347         }
9348         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9349
9350         i40e_fdir_sb_setup(pf);
9351
9352         /* Setup static PF queue filter control settings */
9353         ret = i40e_setup_pf_filter_control(pf);
9354         if (ret) {
9355                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9356                          ret);
9357                 /* Failure here should not stop continuing other steps */
9358         }
9359
9360         /* enable RSS in the HW, even for only one queue, as the stack can use
9361          * the hash
9362          */
9363         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9364                 i40e_config_rss(pf);
9365
9366         /* fill in link information and enable LSE reporting */
9367         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9368         i40e_link_event(pf);
9369
9370         /* Initialize user-specific link properties */
9371         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9372                                   I40E_AQ_AN_COMPLETED) ? true : false);
9373
9374         i40e_ptp_init(pf);
9375
9376         return ret;
9377 }
9378
9379 /**
9380  * i40e_determine_queue_usage - Work out queue distribution
9381  * @pf: board private structure
9382  **/
9383 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9384 {
9385         int queues_left;
9386
9387         pf->num_lan_qps = 0;
9388 #ifdef I40E_FCOE
9389         pf->num_fcoe_qps = 0;
9390 #endif
9391
9392         /* Find the max queues to be put into basic use.  We'll always be
9393          * using TC0, whether or not DCB is running, and TC0 will get the
9394          * big RSS set.
9395          */
9396         queues_left = pf->hw.func_caps.num_tx_qp;
9397
9398         if ((queues_left == 1) ||
9399             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9400                 /* one qp for PF, no queues for anything else */
9401                 queues_left = 0;
9402                 pf->rss_size = pf->num_lan_qps = 1;
9403
9404                 /* make sure all the fancies are disabled */
9405                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9406 #ifdef I40E_FCOE
9407                                I40E_FLAG_FCOE_ENABLED   |
9408 #endif
9409                                I40E_FLAG_FD_SB_ENABLED  |
9410                                I40E_FLAG_FD_ATR_ENABLED |
9411                                I40E_FLAG_DCB_CAPABLE    |
9412                                I40E_FLAG_SRIOV_ENABLED  |
9413                                I40E_FLAG_VMDQ_ENABLED);
9414         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
9415                                   I40E_FLAG_FD_SB_ENABLED |
9416                                   I40E_FLAG_FD_ATR_ENABLED |
9417                                   I40E_FLAG_DCB_CAPABLE))) {
9418                 /* one qp for PF */
9419                 pf->rss_size = pf->num_lan_qps = 1;
9420                 queues_left -= pf->num_lan_qps;
9421
9422                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9423 #ifdef I40E_FCOE
9424                                I40E_FLAG_FCOE_ENABLED   |
9425 #endif
9426                                I40E_FLAG_FD_SB_ENABLED  |
9427                                I40E_FLAG_FD_ATR_ENABLED |
9428                                I40E_FLAG_DCB_ENABLED    |
9429                                I40E_FLAG_VMDQ_ENABLED);
9430         } else {
9431                 /* Not enough queues for all TCs */
9432                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9433                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9434                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9435                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
9436                 }
9437                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
9438                                         num_online_cpus());
9439                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
9440                                         pf->hw.func_caps.num_tx_qp);
9441
9442                 queues_left -= pf->num_lan_qps;
9443         }
9444
9445 #ifdef I40E_FCOE
9446         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
9447                 if (I40E_DEFAULT_FCOE <= queues_left) {
9448                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
9449                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
9450                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
9451                 } else {
9452                         pf->num_fcoe_qps = 0;
9453                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
9454                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9455                 }
9456
9457                 queues_left -= pf->num_fcoe_qps;
9458         }
9459
9460 #endif
9461         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9462                 if (queues_left > 1) {
9463                         queues_left -= 1; /* save 1 queue for FD */
9464                 } else {
9465                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9466                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9467                 }
9468         }
9469
9470         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9471             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9472                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9473                                         (queues_left / pf->num_vf_qps));
9474                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9475         }
9476
9477         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9478             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9479                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9480                                           (queues_left / pf->num_vmdq_qps));
9481                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9482         }
9483
9484         pf->queues_left = queues_left;
9485 #ifdef I40E_FCOE
9486         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9487 #endif
9488 }
9489
9490 /**
9491  * i40e_setup_pf_filter_control - Setup PF static filter control
9492  * @pf: PF to be setup
9493  *
9494  * i40e_setup_pf_filter_control sets up a PF's initial filter control
9495  * settings. If PE/FCoE are enabled then it will also set the per PF
9496  * based filter sizes required for them. It also enables Flow director,
9497  * ethertype and macvlan type filter settings for the pf.
9498  *
9499  * Returns 0 on success, negative on failure
9500  **/
9501 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9502 {
9503         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9504
9505         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9506
9507         /* Flow Director is enabled */
9508         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9509                 settings->enable_fdir = true;
9510
9511         /* Ethtype and MACVLAN filters enabled for PF */
9512         settings->enable_ethtype = true;
9513         settings->enable_macvlan = true;
9514
9515         if (i40e_set_filter_control(&pf->hw, settings))
9516                 return -ENOENT;
9517
9518         return 0;
9519 }
9520
9521 #define INFO_STRING_LEN 255
9522 static void i40e_print_features(struct i40e_pf *pf)
9523 {
9524         struct i40e_hw *hw = &pf->hw;
9525         char *buf, *string;
9526
9527         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9528         if (!string) {
9529                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9530                 return;
9531         }
9532
9533         buf = string;
9534
9535         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9536 #ifdef CONFIG_PCI_IOV
9537         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9538 #endif
9539         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9540                        pf->hw.func_caps.num_vsis,
9541                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9542                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9543
9544         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9545                 buf += sprintf(buf, "RSS ");
9546         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9547                 buf += sprintf(buf, "FD_ATR ");
9548         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9549                 buf += sprintf(buf, "FD_SB ");
9550                 buf += sprintf(buf, "NTUPLE ");
9551         }
9552         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9553                 buf += sprintf(buf, "DCB ");
9554         if (pf->flags & I40E_FLAG_PTP)
9555                 buf += sprintf(buf, "PTP ");
9556 #ifdef I40E_FCOE
9557         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9558                 buf += sprintf(buf, "FCOE ");
9559 #endif
9560
9561         BUG_ON(buf > (string + INFO_STRING_LEN));
9562         dev_info(&pf->pdev->dev, "%s\n", string);
9563         kfree(string);
9564 }
9565
9566 /**
9567  * i40e_probe - Device initialization routine
9568  * @pdev: PCI device information struct
9569  * @ent: entry in i40e_pci_tbl
9570  *
9571  * i40e_probe initializes a PF identified by a pci_dev structure.
9572  * The OS initialization, configuring of the PF private structure,
9573  * and a hardware reset occur.
9574  *
9575  * Returns 0 on success, negative on failure
9576  **/
9577 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9578 {
9579         struct i40e_aq_get_phy_abilities_resp abilities;
9580         unsigned long ioremap_len;
9581         struct i40e_pf *pf;
9582         struct i40e_hw *hw;
9583         static u16 pfs_found;
9584         u16 link_status;
9585         int err = 0;
9586         u32 len;
9587         u32 i;
9588
9589         err = pci_enable_device_mem(pdev);
9590         if (err)
9591                 return err;
9592
9593         /* set up for high or low dma */
9594         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9595         if (err) {
9596                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9597                 if (err) {
9598                         dev_err(&pdev->dev,
9599                                 "DMA configuration failed: 0x%x\n", err);
9600                         goto err_dma;
9601                 }
9602         }
9603
9604         /* set up pci connections */
9605         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9606                                            IORESOURCE_MEM), i40e_driver_name);
9607         if (err) {
9608                 dev_info(&pdev->dev,
9609                          "pci_request_selected_regions failed %d\n", err);
9610                 goto err_pci_reg;
9611         }
9612
9613         pci_enable_pcie_error_reporting(pdev);
9614         pci_set_master(pdev);
9615
9616         /* Now that we have a PCI connection, we need to do the
9617          * low level device setup.  This is primarily setting up
9618          * the Admin Queue structures and then querying for the
9619          * device's current profile information.
9620          */
9621         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9622         if (!pf) {
9623                 err = -ENOMEM;
9624                 goto err_pf_alloc;
9625         }
9626         pf->next_vsi = 0;
9627         pf->pdev = pdev;
9628         set_bit(__I40E_DOWN, &pf->state);
9629
9630         hw = &pf->hw;
9631         hw->back = pf;
9632
9633         ioremap_len = min_t(unsigned long, pci_resource_len(pdev, 0),
9634                             I40E_MAX_CSR_SPACE);
9635
9636         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), ioremap_len);
9637         if (!hw->hw_addr) {
9638                 err = -EIO;
9639                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9640                          (unsigned int)pci_resource_start(pdev, 0),
9641                          (unsigned int)pci_resource_len(pdev, 0), err);
9642                 goto err_ioremap;
9643         }
9644         hw->vendor_id = pdev->vendor;
9645         hw->device_id = pdev->device;
9646         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
9647         hw->subsystem_vendor_id = pdev->subsystem_vendor;
9648         hw->subsystem_device_id = pdev->subsystem_device;
9649         hw->bus.device = PCI_SLOT(pdev->devfn);
9650         hw->bus.func = PCI_FUNC(pdev->devfn);
9651         pf->instance = pfs_found;
9652
9653         if (debug != -1) {
9654                 pf->msg_enable = pf->hw.debug_mask;
9655                 pf->msg_enable = debug;
9656         }
9657
9658         /* do a special CORER for clearing PXE mode once at init */
9659         if (hw->revision_id == 0 &&
9660             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
9661                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
9662                 i40e_flush(hw);
9663                 msleep(200);
9664                 pf->corer_count++;
9665
9666                 i40e_clear_pxe_mode(hw);
9667         }
9668
9669         /* Reset here to make sure all is clean and to define PF 'n' */
9670         i40e_clear_hw(hw);
9671         err = i40e_pf_reset(hw);
9672         if (err) {
9673                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
9674                 goto err_pf_reset;
9675         }
9676         pf->pfr_count++;
9677
9678         hw->aq.num_arq_entries = I40E_AQ_LEN;
9679         hw->aq.num_asq_entries = I40E_AQ_LEN;
9680         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9681         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9682         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
9683
9684         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
9685                  "%s-%s:misc",
9686                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
9687
9688         err = i40e_init_shared_code(hw);
9689         if (err) {
9690                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
9691                 goto err_pf_reset;
9692         }
9693
9694         /* set up a default setting for link flow control */
9695         pf->hw.fc.requested_mode = I40E_FC_NONE;
9696
9697         err = i40e_init_adminq(hw);
9698         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
9699         if (err) {
9700                 dev_info(&pdev->dev,
9701                          "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");
9702                 goto err_pf_reset;
9703         }
9704
9705         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
9706             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
9707                 dev_info(&pdev->dev,
9708                          "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");
9709         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
9710                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
9711                 dev_info(&pdev->dev,
9712                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
9713
9714         i40e_verify_eeprom(pf);
9715
9716         /* Rev 0 hardware was never productized */
9717         if (hw->revision_id < 1)
9718                 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");
9719
9720         i40e_clear_pxe_mode(hw);
9721         err = i40e_get_capabilities(pf);
9722         if (err)
9723                 goto err_adminq_setup;
9724
9725         err = i40e_sw_init(pf);
9726         if (err) {
9727                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
9728                 goto err_sw_init;
9729         }
9730
9731         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
9732                                 hw->func_caps.num_rx_qp,
9733                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
9734         if (err) {
9735                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
9736                 goto err_init_lan_hmc;
9737         }
9738
9739         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
9740         if (err) {
9741                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
9742                 err = -ENOENT;
9743                 goto err_configure_lan_hmc;
9744         }
9745
9746         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
9747          * Ignore error return codes because if it was already disabled via
9748          * hardware settings this will fail
9749          */
9750         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
9751             (pf->hw.aq.fw_maj_ver < 4)) {
9752                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
9753                 i40e_aq_stop_lldp(hw, true, NULL);
9754         }
9755
9756         i40e_get_mac_addr(hw, hw->mac.addr);
9757         if (!is_valid_ether_addr(hw->mac.addr)) {
9758                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
9759                 err = -EIO;
9760                 goto err_mac_addr;
9761         }
9762         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
9763         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
9764         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
9765         if (is_valid_ether_addr(hw->mac.port_addr))
9766                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
9767 #ifdef I40E_FCOE
9768         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
9769         if (err)
9770                 dev_info(&pdev->dev,
9771                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
9772         if (!is_valid_ether_addr(hw->mac.san_addr)) {
9773                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
9774                          hw->mac.san_addr);
9775                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
9776         }
9777         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
9778 #endif /* I40E_FCOE */
9779
9780         pci_set_drvdata(pdev, pf);
9781         pci_save_state(pdev);
9782 #ifdef CONFIG_I40E_DCB
9783         err = i40e_init_pf_dcb(pf);
9784         if (err) {
9785                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
9786                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9787                 /* Continue without DCB enabled */
9788         }
9789 #endif /* CONFIG_I40E_DCB */
9790
9791         /* set up periodic task facility */
9792         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
9793         pf->service_timer_period = HZ;
9794
9795         INIT_WORK(&pf->service_task, i40e_service_task);
9796         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
9797         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
9798         pf->link_check_timeout = jiffies;
9799
9800         /* WoL defaults to disabled */
9801         pf->wol_en = false;
9802         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
9803
9804         /* set up the main switch operations */
9805         i40e_determine_queue_usage(pf);
9806         i40e_init_interrupt_scheme(pf);
9807
9808         /* The number of VSIs reported by the FW is the minimum guaranteed
9809          * to us; HW supports far more and we share the remaining pool with
9810          * the other PFs. We allocate space for more than the guarantee with
9811          * the understanding that we might not get them all later.
9812          */
9813         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
9814                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
9815         else
9816                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
9817
9818         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
9819         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
9820         pf->vsi = kzalloc(len, GFP_KERNEL);
9821         if (!pf->vsi) {
9822                 err = -ENOMEM;
9823                 goto err_switch_setup;
9824         }
9825
9826         err = i40e_setup_pf_switch(pf, false);
9827         if (err) {
9828                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
9829                 goto err_vsis;
9830         }
9831         /* if FDIR VSI was set up, start it now */
9832         for (i = 0; i < pf->num_alloc_vsi; i++) {
9833                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
9834                         i40e_vsi_open(pf->vsi[i]);
9835                         break;
9836                 }
9837         }
9838
9839         /* driver is only interested in link up/down and module qualification
9840          * reports from firmware
9841          */
9842         err = i40e_aq_set_phy_int_mask(&pf->hw,
9843                                        I40E_AQ_EVENT_LINK_UPDOWN |
9844                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
9845         if (err)
9846                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", err);
9847
9848         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
9849             (pf->hw.aq.fw_maj_ver < 4)) {
9850                 msleep(75);
9851                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
9852                 if (err)
9853                         dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
9854                                  pf->hw.aq.asq_last_status);
9855         }
9856         /* The main driver is (mostly) up and happy. We need to set this state
9857          * before setting up the misc vector or we get a race and the vector
9858          * ends up disabled forever.
9859          */
9860         clear_bit(__I40E_DOWN, &pf->state);
9861
9862         /* In case of MSIX we are going to setup the misc vector right here
9863          * to handle admin queue events etc. In case of legacy and MSI
9864          * the misc functionality and queue processing is combined in
9865          * the same vector and that gets setup at open.
9866          */
9867         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9868                 err = i40e_setup_misc_vector(pf);
9869                 if (err) {
9870                         dev_info(&pdev->dev,
9871                                  "setup of misc vector failed: %d\n", err);
9872                         goto err_vsis;
9873                 }
9874         }
9875
9876 #ifdef CONFIG_PCI_IOV
9877         /* prep for VF support */
9878         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9879             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
9880             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
9881                 u32 val;
9882
9883                 /* disable link interrupts for VFs */
9884                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
9885                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
9886                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
9887                 i40e_flush(hw);
9888
9889                 if (pci_num_vf(pdev)) {
9890                         dev_info(&pdev->dev,
9891                                  "Active VFs found, allocating resources.\n");
9892                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
9893                         if (err)
9894                                 dev_info(&pdev->dev,
9895                                          "Error %d allocating resources for existing VFs\n",
9896                                          err);
9897                 }
9898         }
9899 #endif /* CONFIG_PCI_IOV */
9900
9901         pfs_found++;
9902
9903         i40e_dbg_pf_init(pf);
9904
9905         /* tell the firmware that we're starting */
9906         i40e_send_version(pf);
9907
9908         /* since everything's happy, start the service_task timer */
9909         mod_timer(&pf->service_timer,
9910                   round_jiffies(jiffies + pf->service_timer_period));
9911
9912 #ifdef I40E_FCOE
9913         /* create FCoE interface */
9914         i40e_fcoe_vsi_setup(pf);
9915
9916 #endif
9917         /* Get the negotiated link width and speed from PCI config space */
9918         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
9919
9920         i40e_set_pci_config_data(hw, link_status);
9921
9922         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
9923                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
9924                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
9925                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
9926                  "Unknown"),
9927                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
9928                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
9929                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
9930                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
9931                  "Unknown"));
9932
9933         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
9934             hw->bus.speed < i40e_bus_speed_8000) {
9935                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
9936                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
9937         }
9938
9939         /* get the requested speeds from the fw */
9940         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
9941         if (err)
9942                 dev_info(&pf->pdev->dev, "get phy abilities failed, aq_err %d, advertised speed settings may not be correct\n",
9943                          err);
9944         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
9945
9946         /* print a string summarizing features */
9947         i40e_print_features(pf);
9948
9949         return 0;
9950
9951         /* Unwind what we've done if something failed in the setup */
9952 err_vsis:
9953         set_bit(__I40E_DOWN, &pf->state);
9954         i40e_clear_interrupt_scheme(pf);
9955         kfree(pf->vsi);
9956 err_switch_setup:
9957         i40e_reset_interrupt_capability(pf);
9958         del_timer_sync(&pf->service_timer);
9959 err_mac_addr:
9960 err_configure_lan_hmc:
9961         (void)i40e_shutdown_lan_hmc(hw);
9962 err_init_lan_hmc:
9963         kfree(pf->qp_pile);
9964 err_sw_init:
9965 err_adminq_setup:
9966         (void)i40e_shutdown_adminq(hw);
9967 err_pf_reset:
9968         iounmap(hw->hw_addr);
9969 err_ioremap:
9970         kfree(pf);
9971 err_pf_alloc:
9972         pci_disable_pcie_error_reporting(pdev);
9973         pci_release_selected_regions(pdev,
9974                                      pci_select_bars(pdev, IORESOURCE_MEM));
9975 err_pci_reg:
9976 err_dma:
9977         pci_disable_device(pdev);
9978         return err;
9979 }
9980
9981 /**
9982  * i40e_remove - Device removal routine
9983  * @pdev: PCI device information struct
9984  *
9985  * i40e_remove is called by the PCI subsystem to alert the driver
9986  * that is should release a PCI device.  This could be caused by a
9987  * Hot-Plug event, or because the driver is going to be removed from
9988  * memory.
9989  **/
9990 static void i40e_remove(struct pci_dev *pdev)
9991 {
9992         struct i40e_pf *pf = pci_get_drvdata(pdev);
9993         i40e_status ret_code;
9994         int i;
9995
9996         i40e_dbg_pf_exit(pf);
9997
9998         i40e_ptp_stop(pf);
9999
10000         /* no more scheduling of any task */
10001         set_bit(__I40E_DOWN, &pf->state);
10002         del_timer_sync(&pf->service_timer);
10003         cancel_work_sync(&pf->service_task);
10004         i40e_fdir_teardown(pf);
10005
10006         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10007                 i40e_free_vfs(pf);
10008                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10009         }
10010
10011         i40e_fdir_teardown(pf);
10012
10013         /* If there is a switch structure or any orphans, remove them.
10014          * This will leave only the PF's VSI remaining.
10015          */
10016         for (i = 0; i < I40E_MAX_VEB; i++) {
10017                 if (!pf->veb[i])
10018                         continue;
10019
10020                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10021                     pf->veb[i]->uplink_seid == 0)
10022                         i40e_switch_branch_release(pf->veb[i]);
10023         }
10024
10025         /* Now we can shutdown the PF's VSI, just before we kill
10026          * adminq and hmc.
10027          */
10028         if (pf->vsi[pf->lan_vsi])
10029                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10030
10031         /* shutdown and destroy the HMC */
10032         if (pf->hw.hmc.hmc_obj) {
10033                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10034                 if (ret_code)
10035                         dev_warn(&pdev->dev,
10036                                  "Failed to destroy the HMC resources: %d\n",
10037                                  ret_code);
10038         }
10039
10040         /* shutdown the adminq */
10041         ret_code = i40e_shutdown_adminq(&pf->hw);
10042         if (ret_code)
10043                 dev_warn(&pdev->dev,
10044                          "Failed to destroy the Admin Queue resources: %d\n",
10045                          ret_code);
10046
10047         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10048         i40e_clear_interrupt_scheme(pf);
10049         for (i = 0; i < pf->num_alloc_vsi; i++) {
10050                 if (pf->vsi[i]) {
10051                         i40e_vsi_clear_rings(pf->vsi[i]);
10052                         i40e_vsi_clear(pf->vsi[i]);
10053                         pf->vsi[i] = NULL;
10054                 }
10055         }
10056
10057         for (i = 0; i < I40E_MAX_VEB; i++) {
10058                 kfree(pf->veb[i]);
10059                 pf->veb[i] = NULL;
10060         }
10061
10062         kfree(pf->qp_pile);
10063         kfree(pf->vsi);
10064
10065         iounmap(pf->hw.hw_addr);
10066         kfree(pf);
10067         pci_release_selected_regions(pdev,
10068                                      pci_select_bars(pdev, IORESOURCE_MEM));
10069
10070         pci_disable_pcie_error_reporting(pdev);
10071         pci_disable_device(pdev);
10072 }
10073
10074 /**
10075  * i40e_pci_error_detected - warning that something funky happened in PCI land
10076  * @pdev: PCI device information struct
10077  *
10078  * Called to warn that something happened and the error handling steps
10079  * are in progress.  Allows the driver to quiesce things, be ready for
10080  * remediation.
10081  **/
10082 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10083                                                 enum pci_channel_state error)
10084 {
10085         struct i40e_pf *pf = pci_get_drvdata(pdev);
10086
10087         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10088
10089         /* shutdown all operations */
10090         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10091                 rtnl_lock();
10092                 i40e_prep_for_reset(pf);
10093                 rtnl_unlock();
10094         }
10095
10096         /* Request a slot reset */
10097         return PCI_ERS_RESULT_NEED_RESET;
10098 }
10099
10100 /**
10101  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10102  * @pdev: PCI device information struct
10103  *
10104  * Called to find if the driver can work with the device now that
10105  * the pci slot has been reset.  If a basic connection seems good
10106  * (registers are readable and have sane content) then return a
10107  * happy little PCI_ERS_RESULT_xxx.
10108  **/
10109 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10110 {
10111         struct i40e_pf *pf = pci_get_drvdata(pdev);
10112         pci_ers_result_t result;
10113         int err;
10114         u32 reg;
10115
10116         dev_info(&pdev->dev, "%s\n", __func__);
10117         if (pci_enable_device_mem(pdev)) {
10118                 dev_info(&pdev->dev,
10119                          "Cannot re-enable PCI device after reset.\n");
10120                 result = PCI_ERS_RESULT_DISCONNECT;
10121         } else {
10122                 pci_set_master(pdev);
10123                 pci_restore_state(pdev);
10124                 pci_save_state(pdev);
10125                 pci_wake_from_d3(pdev, false);
10126
10127                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10128                 if (reg == 0)
10129                         result = PCI_ERS_RESULT_RECOVERED;
10130                 else
10131                         result = PCI_ERS_RESULT_DISCONNECT;
10132         }
10133
10134         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10135         if (err) {
10136                 dev_info(&pdev->dev,
10137                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10138                          err);
10139                 /* non-fatal, continue */
10140         }
10141
10142         return result;
10143 }
10144
10145 /**
10146  * i40e_pci_error_resume - restart operations after PCI error recovery
10147  * @pdev: PCI device information struct
10148  *
10149  * Called to allow the driver to bring things back up after PCI error
10150  * and/or reset recovery has finished.
10151  **/
10152 static void i40e_pci_error_resume(struct pci_dev *pdev)
10153 {
10154         struct i40e_pf *pf = pci_get_drvdata(pdev);
10155
10156         dev_info(&pdev->dev, "%s\n", __func__);
10157         if (test_bit(__I40E_SUSPENDED, &pf->state))
10158                 return;
10159
10160         rtnl_lock();
10161         i40e_handle_reset_warning(pf);
10162         rtnl_lock();
10163 }
10164
10165 /**
10166  * i40e_shutdown - PCI callback for shutting down
10167  * @pdev: PCI device information struct
10168  **/
10169 static void i40e_shutdown(struct pci_dev *pdev)
10170 {
10171         struct i40e_pf *pf = pci_get_drvdata(pdev);
10172         struct i40e_hw *hw = &pf->hw;
10173
10174         set_bit(__I40E_SUSPENDED, &pf->state);
10175         set_bit(__I40E_DOWN, &pf->state);
10176         rtnl_lock();
10177         i40e_prep_for_reset(pf);
10178         rtnl_unlock();
10179
10180         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10181         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10182
10183         i40e_clear_interrupt_scheme(pf);
10184
10185         if (system_state == SYSTEM_POWER_OFF) {
10186                 pci_wake_from_d3(pdev, pf->wol_en);
10187                 pci_set_power_state(pdev, PCI_D3hot);
10188         }
10189 }
10190
10191 #ifdef CONFIG_PM
10192 /**
10193  * i40e_suspend - PCI callback for moving to D3
10194  * @pdev: PCI device information struct
10195  **/
10196 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10197 {
10198         struct i40e_pf *pf = pci_get_drvdata(pdev);
10199         struct i40e_hw *hw = &pf->hw;
10200
10201         set_bit(__I40E_SUSPENDED, &pf->state);
10202         set_bit(__I40E_DOWN, &pf->state);
10203         del_timer_sync(&pf->service_timer);
10204         cancel_work_sync(&pf->service_task);
10205         rtnl_lock();
10206         i40e_prep_for_reset(pf);
10207         rtnl_unlock();
10208
10209         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10210         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10211
10212         pci_wake_from_d3(pdev, pf->wol_en);
10213         pci_set_power_state(pdev, PCI_D3hot);
10214
10215         return 0;
10216 }
10217
10218 /**
10219  * i40e_resume - PCI callback for waking up from D3
10220  * @pdev: PCI device information struct
10221  **/
10222 static int i40e_resume(struct pci_dev *pdev)
10223 {
10224         struct i40e_pf *pf = pci_get_drvdata(pdev);
10225         u32 err;
10226
10227         pci_set_power_state(pdev, PCI_D0);
10228         pci_restore_state(pdev);
10229         /* pci_restore_state() clears dev->state_saves, so
10230          * call pci_save_state() again to restore it.
10231          */
10232         pci_save_state(pdev);
10233
10234         err = pci_enable_device_mem(pdev);
10235         if (err) {
10236                 dev_err(&pdev->dev,
10237                         "%s: Cannot enable PCI device from suspend\n",
10238                         __func__);
10239                 return err;
10240         }
10241         pci_set_master(pdev);
10242
10243         /* no wakeup events while running */
10244         pci_wake_from_d3(pdev, false);
10245
10246         /* handling the reset will rebuild the device state */
10247         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10248                 clear_bit(__I40E_DOWN, &pf->state);
10249                 rtnl_lock();
10250                 i40e_reset_and_rebuild(pf, false);
10251                 rtnl_unlock();
10252         }
10253
10254         return 0;
10255 }
10256
10257 #endif
10258 static const struct pci_error_handlers i40e_err_handler = {
10259         .error_detected = i40e_pci_error_detected,
10260         .slot_reset = i40e_pci_error_slot_reset,
10261         .resume = i40e_pci_error_resume,
10262 };
10263
10264 static struct pci_driver i40e_driver = {
10265         .name     = i40e_driver_name,
10266         .id_table = i40e_pci_tbl,
10267         .probe    = i40e_probe,
10268         .remove   = i40e_remove,
10269 #ifdef CONFIG_PM
10270         .suspend  = i40e_suspend,
10271         .resume   = i40e_resume,
10272 #endif
10273         .shutdown = i40e_shutdown,
10274         .err_handler = &i40e_err_handler,
10275         .sriov_configure = i40e_pci_sriov_configure,
10276 };
10277
10278 /**
10279  * i40e_init_module - Driver registration routine
10280  *
10281  * i40e_init_module is the first routine called when the driver is
10282  * loaded. All it does is register with the PCI subsystem.
10283  **/
10284 static int __init i40e_init_module(void)
10285 {
10286         pr_info("%s: %s - version %s\n", i40e_driver_name,
10287                 i40e_driver_string, i40e_driver_version_str);
10288         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10289
10290         i40e_dbg_init();
10291         return pci_register_driver(&i40e_driver);
10292 }
10293 module_init(i40e_init_module);
10294
10295 /**
10296  * i40e_exit_module - Driver exit cleanup routine
10297  *
10298  * i40e_exit_module is called just before the driver is removed
10299  * from memory.
10300  **/
10301 static void __exit i40e_exit_module(void)
10302 {
10303         pci_unregister_driver(&i40e_driver);
10304         i40e_dbg_exit();
10305 }
10306 module_exit(i40e_exit_module);