drivers/net/ethernet/intel/i40e/i40e_main.c

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2014 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 6
  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_update32(hw, I40E_GLPRT_TDPC(hw->port),
 923                            pf->stat_offsets_loaded,
 924                            &osd->eth.tx_discards,
 925                            &nsd->eth.tx_discards);
 926
 927         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 928                            I40E_GLPRT_UPRCL(hw->port),
 929                            pf->stat_offsets_loaded,
 930                            &osd->eth.rx_unicast,
 931                            &nsd->eth.rx_unicast);
 932         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 933                            I40E_GLPRT_MPRCL(hw->port),
 934                            pf->stat_offsets_loaded,
 935                            &osd->eth.rx_multicast,
 936                            &nsd->eth.rx_multicast);
 937         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 938                            I40E_GLPRT_BPRCL(hw->port),
 939                            pf->stat_offsets_loaded,
 940                            &osd->eth.rx_broadcast,
 941                            &nsd->eth.rx_broadcast);
 942         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 943                            I40E_GLPRT_UPTCL(hw->port),
 944                            pf->stat_offsets_loaded,
 945                            &osd->eth.tx_unicast,
 946                            &nsd->eth.tx_unicast);
 947         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 948                            I40E_GLPRT_MPTCL(hw->port),
 949                            pf->stat_offsets_loaded,
 950                            &osd->eth.tx_multicast,
 951                            &nsd->eth.tx_multicast);
 952         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 953                            I40E_GLPRT_BPTCL(hw->port),
 954                            pf->stat_offsets_loaded,
 955                            &osd->eth.tx_broadcast,
 956                            &nsd->eth.tx_broadcast);
 957
 958         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 959                            pf->stat_offsets_loaded,
 960                            &osd->tx_dropped_link_down,
 961                            &nsd->tx_dropped_link_down);
 962
 963         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 964                            pf->stat_offsets_loaded,
 965                            &osd->crc_errors, &nsd->crc_errors);
 966
 967         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 968                            pf->stat_offsets_loaded,
 969                            &osd->illegal_bytes, &nsd->illegal_bytes);
 970
 971         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 972                            pf->stat_offsets_loaded,
 973                            &osd->mac_local_faults,
 974                            &nsd->mac_local_faults);
 975         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 976                            pf->stat_offsets_loaded,
 977                            &osd->mac_remote_faults,
 978                            &nsd->mac_remote_faults);
 979
 980         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 981                            pf->stat_offsets_loaded,
 982                            &osd->rx_length_errors,
 983                            &nsd->rx_length_errors);
 984
 985         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 986                            pf->stat_offsets_loaded,
 987                            &osd->link_xon_rx, &nsd->link_xon_rx);
 988         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 989                            pf->stat_offsets_loaded,
 990                            &osd->link_xon_tx, &nsd->link_xon_tx);
 991         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
 992         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 993                            pf->stat_offsets_loaded,
 994                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 995
 996         for (i = 0; i < 8; i++) {
 997                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 998                                    pf->stat_offsets_loaded,
 999                                    &osd->priority_xon_rx[i],
1000                                    &nsd->priority_xon_rx[i]);
1001                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1002                                    pf->stat_offsets_loaded,
1003                                    &osd->priority_xon_tx[i],
1004                                    &nsd->priority_xon_tx[i]);
1005                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1006                                    pf->stat_offsets_loaded,
1007                                    &osd->priority_xoff_tx[i],
1008                                    &nsd->priority_xoff_tx[i]);
1009                 i40e_stat_update32(hw,
1010                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1011                                    pf->stat_offsets_loaded,
1012                                    &osd->priority_xon_2_xoff[i],
1013                                    &nsd->priority_xon_2_xoff[i]);
1014         }
1015
1016         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1017                            I40E_GLPRT_PRC64L(hw->port),
1018                            pf->stat_offsets_loaded,
1019                            &osd->rx_size_64, &nsd->rx_size_64);
1020         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1021                            I40E_GLPRT_PRC127L(hw->port),
1022                            pf->stat_offsets_loaded,
1023                            &osd->rx_size_127, &nsd->rx_size_127);
1024         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1025                            I40E_GLPRT_PRC255L(hw->port),
1026                            pf->stat_offsets_loaded,
1027                            &osd->rx_size_255, &nsd->rx_size_255);
1028         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1029                            I40E_GLPRT_PRC511L(hw->port),
1030                            pf->stat_offsets_loaded,
1031                            &osd->rx_size_511, &nsd->rx_size_511);
1032         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1033                            I40E_GLPRT_PRC1023L(hw->port),
1034                            pf->stat_offsets_loaded,
1035                            &osd->rx_size_1023, &nsd->rx_size_1023);
1036         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1037                            I40E_GLPRT_PRC1522L(hw->port),
1038                            pf->stat_offsets_loaded,
1039                            &osd->rx_size_1522, &nsd->rx_size_1522);
1040         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1041                            I40E_GLPRT_PRC9522L(hw->port),
1042                            pf->stat_offsets_loaded,
1043                            &osd->rx_size_big, &nsd->rx_size_big);
1044
1045         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1046                            I40E_GLPRT_PTC64L(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->tx_size_64, &nsd->tx_size_64);
1049         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1050                            I40E_GLPRT_PTC127L(hw->port),
1051                            pf->stat_offsets_loaded,
1052                            &osd->tx_size_127, &nsd->tx_size_127);
1053         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1054                            I40E_GLPRT_PTC255L(hw->port),
1055                            pf->stat_offsets_loaded,
1056                            &osd->tx_size_255, &nsd->tx_size_255);
1057         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1058                            I40E_GLPRT_PTC511L(hw->port),
1059                            pf->stat_offsets_loaded,
1060                            &osd->tx_size_511, &nsd->tx_size_511);
1061         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1062                            I40E_GLPRT_PTC1023L(hw->port),
1063                            pf->stat_offsets_loaded,
1064                            &osd->tx_size_1023, &nsd->tx_size_1023);
1065         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1066                            I40E_GLPRT_PTC1522L(hw->port),
1067                            pf->stat_offsets_loaded,
1068                            &osd->tx_size_1522, &nsd->tx_size_1522);
1069         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1070                            I40E_GLPRT_PTC9522L(hw->port),
1071                            pf->stat_offsets_loaded,
1072                            &osd->tx_size_big, &nsd->tx_size_big);
1073
1074         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1075                            pf->stat_offsets_loaded,
1076                            &osd->rx_undersize, &nsd->rx_undersize);
1077         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1078                            pf->stat_offsets_loaded,
1079                            &osd->rx_fragments, &nsd->rx_fragments);
1080         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1081                            pf->stat_offsets_loaded,
1082                            &osd->rx_oversize, &nsd->rx_oversize);
1083         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1084                            pf->stat_offsets_loaded,
1085                            &osd->rx_jabber, &nsd->rx_jabber);
1086
1087         /* FDIR stats */
1088         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_atr_cnt_idx),
1089                            pf->stat_offsets_loaded,
1090                            &osd->fd_atr_match, &nsd->fd_atr_match);
1091         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_sb_cnt_idx),
1092                            pf->stat_offsets_loaded,
1093                            &osd->fd_sb_match, &nsd->fd_sb_match);
1094
1095         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1096         nsd->tx_lpi_status =
1097                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1098                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1099         nsd->rx_lpi_status =
1100                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1101                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1102         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1103                            pf->stat_offsets_loaded,
1104                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1105         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1106                            pf->stat_offsets_loaded,
1107                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1108
1109         pf->stat_offsets_loaded = true;
1110 }
1111
1112 /**
1113  * i40e_update_stats - Update the various statistics counters.
1114  * @vsi: the VSI to be updated
1115  *
1116  * Update the various stats for this VSI and its related entities.
1117  **/
1118 void i40e_update_stats(struct i40e_vsi *vsi)
1119 {
1120         struct i40e_pf *pf = vsi->back;
1121
1122         if (vsi == pf->vsi[pf->lan_vsi])
1123                 i40e_update_pf_stats(pf);
1124
1125         i40e_update_vsi_stats(vsi);
1126 #ifdef I40E_FCOE
1127         i40e_update_fcoe_stats(vsi);
1128 #endif
1129 }
1130
1131 /**
1132  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1133  * @vsi: the VSI to be searched
1134  * @macaddr: the MAC address
1135  * @vlan: the vlan
1136  * @is_vf: make sure its a vf filter, else doesn't matter
1137  * @is_netdev: make sure its a netdev filter, else doesn't matter
1138  *
1139  * Returns ptr to the filter object or NULL
1140  **/
1141 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1142                                                 u8 *macaddr, s16 vlan,
1143                                                 bool is_vf, bool is_netdev)
1144 {
1145         struct i40e_mac_filter *f;
1146
1147         if (!vsi || !macaddr)
1148                 return NULL;
1149
1150         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1151                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1152                     (vlan == f->vlan)    &&
1153                     (!is_vf || f->is_vf) &&
1154                     (!is_netdev || f->is_netdev))
1155                         return f;
1156         }
1157         return NULL;
1158 }
1159
1160 /**
1161  * i40e_find_mac - Find a mac addr in the macvlan filters list
1162  * @vsi: the VSI to be searched
1163  * @macaddr: the MAC address we are searching for
1164  * @is_vf: make sure its a vf filter, else doesn't matter
1165  * @is_netdev: make sure its a netdev filter, else doesn't matter
1166  *
1167  * Returns the first filter with the provided MAC address or NULL if
1168  * MAC address was not found
1169  **/
1170 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1171                                       bool is_vf, bool is_netdev)
1172 {
1173         struct i40e_mac_filter *f;
1174
1175         if (!vsi || !macaddr)
1176                 return NULL;
1177
1178         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1179                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1180                     (!is_vf || f->is_vf) &&
1181                     (!is_netdev || f->is_netdev))
1182                         return f;
1183         }
1184         return NULL;
1185 }
1186
1187 /**
1188  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1189  * @vsi: the VSI to be searched
1190  *
1191  * Returns true if VSI is in vlan mode or false otherwise
1192  **/
1193 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1194 {
1195         struct i40e_mac_filter *f;
1196
1197         /* Only -1 for all the filters denotes not in vlan mode
1198          * so we have to go through all the list in order to make sure
1199          */
1200         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1201                 if (f->vlan >= 0)
1202                         return true;
1203         }
1204
1205         return false;
1206 }
1207
1208 /**
1209  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1210  * @vsi: the VSI to be searched
1211  * @macaddr: the mac address to be filtered
1212  * @is_vf: true if it is a vf
1213  * @is_netdev: true if it is a netdev
1214  *
1215  * Goes through all the macvlan filters and adds a
1216  * macvlan filter for each unique vlan that already exists
1217  *
1218  * Returns first filter found on success, else NULL
1219  **/
1220 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1221                                              bool is_vf, bool is_netdev)
1222 {
1223         struct i40e_mac_filter *f;
1224
1225         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1226                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1227                                       is_vf, is_netdev)) {
1228                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1229                                              is_vf, is_netdev))
1230                                 return NULL;
1231                 }
1232         }
1233
1234         return list_first_entry_or_null(&vsi->mac_filter_list,
1235                                         struct i40e_mac_filter, list);
1236 }
1237
1238 /**
1239  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1240  * @vsi: the PF Main VSI - inappropriate for any other VSI
1241  * @macaddr: the MAC address
1242  *
1243  * Some older firmware configurations set up a default promiscuous VLAN
1244  * filter that needs to be removed.
1245  **/
1246 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1247 {
1248         struct i40e_aqc_remove_macvlan_element_data element;
1249         struct i40e_pf *pf = vsi->back;
1250         i40e_status aq_ret;
1251
1252         /* Only appropriate for the PF main VSI */
1253         if (vsi->type != I40E_VSI_MAIN)
1254                 return -EINVAL;
1255
1256         memset(&element, 0, sizeof(element));
1257         ether_addr_copy(element.mac_addr, macaddr);
1258         element.vlan_tag = 0;
1259         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1260                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1261         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1262         if (aq_ret)
1263                 return -ENOENT;
1264
1265         return 0;
1266 }
1267
1268 /**
1269  * i40e_add_filter - Add a mac/vlan filter to the VSI
1270  * @vsi: the VSI to be searched
1271  * @macaddr: the MAC address
1272  * @vlan: the vlan
1273  * @is_vf: make sure its a vf filter, else doesn't matter
1274  * @is_netdev: make sure its a netdev filter, else doesn't matter
1275  *
1276  * Returns ptr to the filter object or NULL when no memory available.
1277  **/
1278 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1279                                         u8 *macaddr, s16 vlan,
1280                                         bool is_vf, bool is_netdev)
1281 {
1282         struct i40e_mac_filter *f;
1283
1284         if (!vsi || !macaddr)
1285                 return NULL;
1286
1287         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1288         if (!f) {
1289                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1290                 if (!f)
1291                         goto add_filter_out;
1292
1293                 ether_addr_copy(f->macaddr, macaddr);
1294                 f->vlan = vlan;
1295                 f->changed = true;
1296
1297                 INIT_LIST_HEAD(&f->list);
1298                 list_add(&f->list, &vsi->mac_filter_list);
1299         }
1300
1301         /* increment counter and add a new flag if needed */
1302         if (is_vf) {
1303                 if (!f->is_vf) {
1304                         f->is_vf = true;
1305                         f->counter++;
1306                 }
1307         } else if (is_netdev) {
1308                 if (!f->is_netdev) {
1309                         f->is_netdev = true;
1310                         f->counter++;
1311                 }
1312         } else {
1313                 f->counter++;
1314         }
1315
1316         /* changed tells sync_filters_subtask to
1317          * push the filter down to the firmware
1318          */
1319         if (f->changed) {
1320                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1321                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1322         }
1323
1324 add_filter_out:
1325         return f;
1326 }
1327
1328 /**
1329  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1330  * @vsi: the VSI to be searched
1331  * @macaddr: the MAC address
1332  * @vlan: the vlan
1333  * @is_vf: make sure it's a vf filter, else doesn't matter
1334  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1335  **/
1336 void i40e_del_filter(struct i40e_vsi *vsi,
1337                      u8 *macaddr, s16 vlan,
1338                      bool is_vf, bool is_netdev)
1339 {
1340         struct i40e_mac_filter *f;
1341
1342         if (!vsi || !macaddr)
1343                 return;
1344
1345         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1346         if (!f || f->counter == 0)
1347                 return;
1348
1349         if (is_vf) {
1350                 if (f->is_vf) {
1351                         f->is_vf = false;
1352                         f->counter--;
1353                 }
1354         } else if (is_netdev) {
1355                 if (f->is_netdev) {
1356                         f->is_netdev = false;
1357                         f->counter--;
1358                 }
1359         } else {
1360                 /* make sure we don't remove a filter in use by vf or netdev */
1361                 int min_f = 0;
1362                 min_f += (f->is_vf ? 1 : 0);
1363                 min_f += (f->is_netdev ? 1 : 0);
1364
1365                 if (f->counter > min_f)
1366                         f->counter--;
1367         }
1368
1369         /* counter == 0 tells sync_filters_subtask to
1370          * remove the filter from the firmware's list
1371          */
1372         if (f->counter == 0) {
1373                 f->changed = true;
1374                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1375                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1376         }
1377 }
1378
1379 /**
1380  * i40e_set_mac - NDO callback to set mac address
1381  * @netdev: network interface device structure
1382  * @p: pointer to an address structure
1383  *
1384  * Returns 0 on success, negative on failure
1385  **/
1386 #ifdef I40E_FCOE
1387 int i40e_set_mac(struct net_device *netdev, void *p)
1388 #else
1389 static int i40e_set_mac(struct net_device *netdev, void *p)
1390 #endif
1391 {
1392         struct i40e_netdev_priv *np = netdev_priv(netdev);
1393         struct i40e_vsi *vsi = np->vsi;
1394         struct i40e_pf *pf = vsi->back;
1395         struct i40e_hw *hw = &pf->hw;
1396         struct sockaddr *addr = p;
1397         struct i40e_mac_filter *f;
1398
1399         if (!is_valid_ether_addr(addr->sa_data))
1400                 return -EADDRNOTAVAIL;
1401
1402         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1403                 netdev_info(netdev, "already using mac address %pM\n",
1404                             addr->sa_data);
1405                 return 0;
1406         }
1407
1408         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1409             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1410                 return -EADDRNOTAVAIL;
1411
1412         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1413                 netdev_info(netdev, "returning to hw mac address %pM\n",
1414                             hw->mac.addr);
1415         else
1416                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1417
1418         if (vsi->type == I40E_VSI_MAIN) {
1419                 i40e_status ret;
1420                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1421                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1422                                                 addr->sa_data, NULL);
1423                 if (ret) {
1424                         netdev_info(netdev,
1425                                     "Addr change for Main VSI failed: %d\n",
1426                                     ret);
1427                         return -EADDRNOTAVAIL;
1428                 }
1429         }
1430
1431         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1432                 struct i40e_aqc_remove_macvlan_element_data element;
1433
1434                 memset(&element, 0, sizeof(element));
1435                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1436                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1437                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1438         } else {
1439                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1440                                 false, false);
1441         }
1442
1443         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1444                 struct i40e_aqc_add_macvlan_element_data element;
1445
1446                 memset(&element, 0, sizeof(element));
1447                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1448                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1449                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1450         } else {
1451                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1452                                     false, false);
1453                 if (f)
1454                         f->is_laa = true;
1455         }
1456
1457         i40e_sync_vsi_filters(vsi);
1458         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1459
1460         return 0;
1461 }
1462
1463 /**
1464  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1465  * @vsi: the VSI being setup
1466  * @ctxt: VSI context structure
1467  * @enabled_tc: Enabled TCs bitmap
1468  * @is_add: True if called before Add VSI
1469  *
1470  * Setup VSI queue mapping for enabled traffic classes.
1471  **/
1472 #ifdef I40E_FCOE
1473 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 #else
1478 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1479                                      struct i40e_vsi_context *ctxt,
1480                                      u8 enabled_tc,
1481                                      bool is_add)
1482 #endif
1483 {
1484         struct i40e_pf *pf = vsi->back;
1485         u16 sections = 0;
1486         u8 netdev_tc = 0;
1487         u16 numtc = 0;
1488         u16 qcount;
1489         u8 offset;
1490         u16 qmap;
1491         int i;
1492         u16 num_tc_qps = 0;
1493
1494         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1495         offset = 0;
1496
1497         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1498                 /* Find numtc from enabled TC bitmap */
1499                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1500                         if (enabled_tc & (1 << i)) /* TC is enabled */
1501                                 numtc++;
1502                 }
1503                 if (!numtc) {
1504                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1505                         numtc = 1;
1506                 }
1507         } else {
1508                 /* At least TC0 is enabled in case of non-DCB case */
1509                 numtc = 1;
1510         }
1511
1512         vsi->tc_config.numtc = numtc;
1513         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1514         /* Number of queues per enabled TC */
1515         num_tc_qps = vsi->alloc_queue_pairs/numtc;
1516         num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
1517
1518         /* Setup queue offset/count for all TCs for given VSI */
1519         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1520                 /* See if the given TC is enabled for the given VSI */
1521                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1522                         int pow, num_qps;
1523
1524                         switch (vsi->type) {
1525                         case I40E_VSI_MAIN:
1526                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1527                                 break;
1528 #ifdef I40E_FCOE
1529                         case I40E_VSI_FCOE:
1530                                 qcount = num_tc_qps;
1531                                 break;
1532 #endif
1533                         case I40E_VSI_FDIR:
1534                         case I40E_VSI_SRIOV:
1535                         case I40E_VSI_VMDQ2:
1536                         default:
1537                                 qcount = num_tc_qps;
1538                                 WARN_ON(i != 0);
1539                                 break;
1540                         }
1541                         vsi->tc_config.tc_info[i].qoffset = offset;
1542                         vsi->tc_config.tc_info[i].qcount = qcount;
1543
1544                         /* find the power-of-2 of the number of queue pairs */
1545                         num_qps = qcount;
1546                         pow = 0;
1547                         while (num_qps && ((1 << pow) < qcount)) {
1548                                 pow++;
1549                                 num_qps >>= 1;
1550                         }
1551
1552                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1553                         qmap =
1554                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1555                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1556
1557                         offset += qcount;
1558                 } else {
1559                         /* TC is not enabled so set the offset to
1560                          * default queue and allocate one queue
1561                          * for the given TC.
1562                          */
1563                         vsi->tc_config.tc_info[i].qoffset = 0;
1564                         vsi->tc_config.tc_info[i].qcount = 1;
1565                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1566
1567                         qmap = 0;
1568                 }
1569                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1570         }
1571
1572         /* Set actual Tx/Rx queue pairs */
1573         vsi->num_queue_pairs = offset;
1574
1575         /* Scheduler section valid can only be set for ADD VSI */
1576         if (is_add) {
1577                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1578
1579                 ctxt->info.up_enable_bits = enabled_tc;
1580         }
1581         if (vsi->type == I40E_VSI_SRIOV) {
1582                 ctxt->info.mapping_flags |=
1583                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1584                 for (i = 0; i < vsi->num_queue_pairs; i++)
1585                         ctxt->info.queue_mapping[i] =
1586                                                cpu_to_le16(vsi->base_queue + i);
1587         } else {
1588                 ctxt->info.mapping_flags |=
1589                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1590                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1591         }
1592         ctxt->info.valid_sections |= cpu_to_le16(sections);
1593 }
1594
1595 /**
1596  * i40e_set_rx_mode - NDO callback to set the netdev filters
1597  * @netdev: network interface device structure
1598  **/
1599 #ifdef I40E_FCOE
1600 void i40e_set_rx_mode(struct net_device *netdev)
1601 #else
1602 static void i40e_set_rx_mode(struct net_device *netdev)
1603 #endif
1604 {
1605         struct i40e_netdev_priv *np = netdev_priv(netdev);
1606         struct i40e_mac_filter *f, *ftmp;
1607         struct i40e_vsi *vsi = np->vsi;
1608         struct netdev_hw_addr *uca;
1609         struct netdev_hw_addr *mca;
1610         struct netdev_hw_addr *ha;
1611
1612         /* add addr if not already in the filter list */
1613         netdev_for_each_uc_addr(uca, netdev) {
1614                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1615                         if (i40e_is_vsi_in_vlan(vsi))
1616                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1617                                                      false, true);
1618                         else
1619                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1620                                                 false, true);
1621                 }
1622         }
1623
1624         netdev_for_each_mc_addr(mca, netdev) {
1625                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1626                         if (i40e_is_vsi_in_vlan(vsi))
1627                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1628                                                      false, true);
1629                         else
1630                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1631                                                 false, true);
1632                 }
1633         }
1634
1635         /* remove filter if not in netdev list */
1636         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1637                 bool found = false;
1638
1639                 if (!f->is_netdev)
1640                         continue;
1641
1642                 if (is_multicast_ether_addr(f->macaddr)) {
1643                         netdev_for_each_mc_addr(mca, netdev) {
1644                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1645                                         found = true;
1646                                         break;
1647                                 }
1648                         }
1649                 } else {
1650                         netdev_for_each_uc_addr(uca, netdev) {
1651                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1652                                         found = true;
1653                                         break;
1654                                 }
1655                         }
1656
1657                         for_each_dev_addr(netdev, ha) {
1658                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1659                                         found = true;
1660                                         break;
1661                                 }
1662                         }
1663                 }
1664                 if (!found)
1665                         i40e_del_filter(
1666                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1667         }
1668
1669         /* check for other flag changes */
1670         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1671                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1672                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1673         }
1674 }
1675
1676 /**
1677  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1678  * @vsi: ptr to the VSI
1679  *
1680  * Push any outstanding VSI filter changes through the AdminQ.
1681  *
1682  * Returns 0 or error value
1683  **/
1684 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1685 {
1686         struct i40e_mac_filter *f, *ftmp;
1687         bool promisc_forced_on = false;
1688         bool add_happened = false;
1689         int filter_list_len = 0;
1690         u32 changed_flags = 0;
1691         i40e_status aq_ret = 0;
1692         struct i40e_pf *pf;
1693         int num_add = 0;
1694         int num_del = 0;
1695         u16 cmd_flags;
1696
1697         /* empty array typed pointers, kcalloc later */
1698         struct i40e_aqc_add_macvlan_element_data *add_list;
1699         struct i40e_aqc_remove_macvlan_element_data *del_list;
1700
1701         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1702                 usleep_range(1000, 2000);
1703         pf = vsi->back;
1704
1705         if (vsi->netdev) {
1706                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1707                 vsi->current_netdev_flags = vsi->netdev->flags;
1708         }
1709
1710         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1711                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1712
1713                 filter_list_len = pf->hw.aq.asq_buf_size /
1714                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1715                 del_list = kcalloc(filter_list_len,
1716                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1717                             GFP_KERNEL);
1718                 if (!del_list)
1719                         return -ENOMEM;
1720
1721                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1722                         if (!f->changed)
1723                                 continue;
1724
1725                         if (f->counter != 0)
1726                                 continue;
1727                         f->changed = false;
1728                         cmd_flags = 0;
1729
1730                         /* add to delete list */
1731                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1732                         del_list[num_del].vlan_tag =
1733                                 cpu_to_le16((u16)(f->vlan ==
1734                                             I40E_VLAN_ANY ? 0 : f->vlan));
1735
1736                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1737                         del_list[num_del].flags = cmd_flags;
1738                         num_del++;
1739
1740                         /* unlink from filter list */
1741                         list_del(&f->list);
1742                         kfree(f);
1743
1744                         /* flush a full buffer */
1745                         if (num_del == filter_list_len) {
1746                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1747                                             vsi->seid, del_list, num_del,
1748                                             NULL);
1749                                 num_del = 0;
1750                                 memset(del_list, 0, sizeof(*del_list));
1751
1752                                 if (aq_ret &&
1753                                     pf->hw.aq.asq_last_status !=
1754                                                               I40E_AQ_RC_ENOENT)
1755                                         dev_info(&pf->pdev->dev,
1756                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1757                                                  aq_ret,
1758                                                  pf->hw.aq.asq_last_status);
1759                         }
1760                 }
1761                 if (num_del) {
1762                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1763                                                      del_list, num_del, NULL);
1764                         num_del = 0;
1765
1766                         if (aq_ret &&
1767                             pf->hw.aq.asq_last_status != I40E_AQ_RC_ENOENT)
1768                                 dev_info(&pf->pdev->dev,
1769                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1770                                          aq_ret, pf->hw.aq.asq_last_status);
1771                 }
1772
1773                 kfree(del_list);
1774                 del_list = NULL;
1775
1776                 /* do all the adds now */
1777                 filter_list_len = pf->hw.aq.asq_buf_size /
1778                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1779                 add_list = kcalloc(filter_list_len,
1780                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1781                                GFP_KERNEL);
1782                 if (!add_list)
1783                         return -ENOMEM;
1784
1785                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1786                         if (!f->changed)
1787                                 continue;
1788
1789                         if (f->counter == 0)
1790                                 continue;
1791                         f->changed = false;
1792                         add_happened = true;
1793                         cmd_flags = 0;
1794
1795                         /* add to add array */
1796                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1797                         add_list[num_add].vlan_tag =
1798                                 cpu_to_le16(
1799                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1800                         add_list[num_add].queue_number = 0;
1801
1802                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1803                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1804                         num_add++;
1805
1806                         /* flush a full buffer */
1807                         if (num_add == filter_list_len) {
1808                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1809                                                              add_list, num_add,
1810                                                              NULL);
1811                                 num_add = 0;
1812
1813                                 if (aq_ret)
1814                                         break;
1815                                 memset(add_list, 0, sizeof(*add_list));
1816                         }
1817                 }
1818                 if (num_add) {
1819                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1820                                                      add_list, num_add, NULL);
1821                         num_add = 0;
1822                 }
1823                 kfree(add_list);
1824                 add_list = NULL;
1825
1826                 if (add_happened && aq_ret &&
1827                     pf->hw.aq.asq_last_status != I40E_AQ_RC_EINVAL) {
1828                         dev_info(&pf->pdev->dev,
1829                                  "add filter failed, err %d, aq_err %d\n",
1830                                  aq_ret, pf->hw.aq.asq_last_status);
1831                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1832                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1833                                       &vsi->state)) {
1834                                 promisc_forced_on = true;
1835                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1836                                         &vsi->state);
1837                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1838                         }
1839                 }
1840         }
1841
1842         /* check for changes in promiscuous modes */
1843         if (changed_flags & IFF_ALLMULTI) {
1844                 bool cur_multipromisc;
1845                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1846                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1847                                                                vsi->seid,
1848                                                                cur_multipromisc,
1849                                                                NULL);
1850                 if (aq_ret)
1851                         dev_info(&pf->pdev->dev,
1852                                  "set multi promisc failed, err %d, aq_err %d\n",
1853                                  aq_ret, pf->hw.aq.asq_last_status);
1854         }
1855         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1856                 bool cur_promisc;
1857                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1858                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1859                                         &vsi->state));
1860                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1861                                                              vsi->seid,
1862                                                              cur_promisc, NULL);
1863                 if (aq_ret)
1864                         dev_info(&pf->pdev->dev,
1865                                  "set uni promisc failed, err %d, aq_err %d\n",
1866                                  aq_ret, pf->hw.aq.asq_last_status);
1867                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1868                                                    vsi->seid,
1869                                                    cur_promisc, NULL);
1870                 if (aq_ret)
1871                         dev_info(&pf->pdev->dev,
1872                                  "set brdcast promisc failed, err %d, aq_err %d\n",
1873                                  aq_ret, pf->hw.aq.asq_last_status);
1874         }
1875
1876         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1877         return 0;
1878 }
1879
1880 /**
1881  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1882  * @pf: board private structure
1883  **/
1884 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1885 {
1886         int v;
1887
1888         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1889                 return;
1890         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1891
1892         for (v = 0; v < pf->num_alloc_vsi; v++) {
1893                 if (pf->vsi[v] &&
1894                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1895                         i40e_sync_vsi_filters(pf->vsi[v]);
1896         }
1897 }
1898
1899 /**
1900  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1901  * @netdev: network interface device structure
1902  * @new_mtu: new value for maximum frame size
1903  *
1904  * Returns 0 on success, negative on failure
1905  **/
1906 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1907 {
1908         struct i40e_netdev_priv *np = netdev_priv(netdev);
1909         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1910         struct i40e_vsi *vsi = np->vsi;
1911
1912         /* MTU < 68 is an error and causes problems on some kernels */
1913         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1914                 return -EINVAL;
1915
1916         netdev_info(netdev, "changing MTU from %d to %d\n",
1917                     netdev->mtu, new_mtu);
1918         netdev->mtu = new_mtu;
1919         if (netif_running(netdev))
1920                 i40e_vsi_reinit_locked(vsi);
1921
1922         return 0;
1923 }
1924
1925 /**
1926  * i40e_ioctl - Access the hwtstamp interface
1927  * @netdev: network interface device structure
1928  * @ifr: interface request data
1929  * @cmd: ioctl command
1930  **/
1931 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1932 {
1933         struct i40e_netdev_priv *np = netdev_priv(netdev);
1934         struct i40e_pf *pf = np->vsi->back;
1935
1936         switch (cmd) {
1937         case SIOCGHWTSTAMP:
1938                 return i40e_ptp_get_ts_config(pf, ifr);
1939         case SIOCSHWTSTAMP:
1940                 return i40e_ptp_set_ts_config(pf, ifr);
1941         default:
1942                 return -EOPNOTSUPP;
1943         }
1944 }
1945
1946 /**
1947  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1948  * @vsi: the vsi being adjusted
1949  **/
1950 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1951 {
1952         struct i40e_vsi_context ctxt;
1953         i40e_status ret;
1954
1955         if ((vsi->info.valid_sections &
1956              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1957             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1958                 return;  /* already enabled */
1959
1960         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1961         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1962                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1963
1964         ctxt.seid = vsi->seid;
1965         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1966         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1967         if (ret) {
1968                 dev_info(&vsi->back->pdev->dev,
1969                          "%s: update vsi failed, aq_err=%d\n",
1970                          __func__, vsi->back->hw.aq.asq_last_status);
1971         }
1972 }
1973
1974 /**
1975  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1976  * @vsi: the vsi being adjusted
1977  **/
1978 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1979 {
1980         struct i40e_vsi_context ctxt;
1981         i40e_status ret;
1982
1983         if ((vsi->info.valid_sections &
1984              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1985             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1986              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1987                 return;  /* already disabled */
1988
1989         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1990         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1991                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1992
1993         ctxt.seid = vsi->seid;
1994         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1995         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1996         if (ret) {
1997                 dev_info(&vsi->back->pdev->dev,
1998                          "%s: update vsi failed, aq_err=%d\n",
1999                          __func__, vsi->back->hw.aq.asq_last_status);
2000         }
2001 }
2002
2003 /**
2004  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2005  * @netdev: network interface to be adjusted
2006  * @features: netdev features to test if VLAN offload is enabled or not
2007  **/
2008 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2009 {
2010         struct i40e_netdev_priv *np = netdev_priv(netdev);
2011         struct i40e_vsi *vsi = np->vsi;
2012
2013         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2014                 i40e_vlan_stripping_enable(vsi);
2015         else
2016                 i40e_vlan_stripping_disable(vsi);
2017 }
2018
2019 /**
2020  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2021  * @vsi: the vsi being configured
2022  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2023  **/
2024 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2025 {
2026         struct i40e_mac_filter *f, *add_f;
2027         bool is_netdev, is_vf;
2028
2029         is_vf = (vsi->type == I40E_VSI_SRIOV);
2030         is_netdev = !!(vsi->netdev);
2031
2032         if (is_netdev) {
2033                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2034                                         is_vf, is_netdev);
2035                 if (!add_f) {
2036                         dev_info(&vsi->back->pdev->dev,
2037                                  "Could not add vlan filter %d for %pM\n",
2038                                  vid, vsi->netdev->dev_addr);
2039                         return -ENOMEM;
2040                 }
2041         }
2042
2043         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2044                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2045                 if (!add_f) {
2046                         dev_info(&vsi->back->pdev->dev,
2047                                  "Could not add vlan filter %d for %pM\n",
2048                                  vid, f->macaddr);
2049                         return -ENOMEM;
2050                 }
2051         }
2052
2053         /* Now if we add a vlan tag, make sure to check if it is the first
2054          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2055          * with 0, so we now accept untagged and specified tagged traffic
2056          * (and not any taged and untagged)
2057          */
2058         if (vid > 0) {
2059                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2060                                                   I40E_VLAN_ANY,
2061                                                   is_vf, is_netdev)) {
2062                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2063                                         I40E_VLAN_ANY, is_vf, is_netdev);
2064                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2065                                                 is_vf, is_netdev);
2066                         if (!add_f) {
2067                                 dev_info(&vsi->back->pdev->dev,
2068                                          "Could not add filter 0 for %pM\n",
2069                                          vsi->netdev->dev_addr);
2070                                 return -ENOMEM;
2071                         }
2072                 }
2073         }
2074
2075         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2076         if (vid > 0 && !vsi->info.pvid) {
2077                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2078                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2079                                              is_vf, is_netdev)) {
2080                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2081                                                 is_vf, is_netdev);
2082                                 add_f = i40e_add_filter(vsi, f->macaddr,
2083                                                         0, is_vf, is_netdev);
2084                                 if (!add_f) {
2085                                         dev_info(&vsi->back->pdev->dev,
2086                                                  "Could not add filter 0 for %pM\n",
2087                                                  f->macaddr);
2088                                         return -ENOMEM;
2089                                 }
2090                         }
2091                 }
2092         }
2093
2094         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2095             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2096                 return 0;
2097
2098         return i40e_sync_vsi_filters(vsi);
2099 }
2100
2101 /**
2102  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2103  * @vsi: the vsi being configured
2104  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2105  *
2106  * Return: 0 on success or negative otherwise
2107  **/
2108 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2109 {
2110         struct net_device *netdev = vsi->netdev;
2111         struct i40e_mac_filter *f, *add_f;
2112         bool is_vf, is_netdev;
2113         int filter_count = 0;
2114
2115         is_vf = (vsi->type == I40E_VSI_SRIOV);
2116         is_netdev = !!(netdev);
2117
2118         if (is_netdev)
2119                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2120
2121         list_for_each_entry(f, &vsi->mac_filter_list, list)
2122                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2123
2124         /* go through all the filters for this VSI and if there is only
2125          * vid == 0 it means there are no other filters, so vid 0 must
2126          * be replaced with -1. This signifies that we should from now
2127          * on accept any traffic (with any tag present, or untagged)
2128          */
2129         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2130                 if (is_netdev) {
2131                         if (f->vlan &&
2132                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2133                                 filter_count++;
2134                 }
2135
2136                 if (f->vlan)
2137                         filter_count++;
2138         }
2139
2140         if (!filter_count && is_netdev) {
2141                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2142                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2143                                     is_vf, is_netdev);
2144                 if (!f) {
2145                         dev_info(&vsi->back->pdev->dev,
2146                                  "Could not add filter %d for %pM\n",
2147                                  I40E_VLAN_ANY, netdev->dev_addr);
2148                         return -ENOMEM;
2149                 }
2150         }
2151
2152         if (!filter_count) {
2153                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2154                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2155                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2156                                             is_vf, is_netdev);
2157                         if (!add_f) {
2158                                 dev_info(&vsi->back->pdev->dev,
2159                                          "Could not add filter %d for %pM\n",
2160                                          I40E_VLAN_ANY, f->macaddr);
2161                                 return -ENOMEM;
2162                         }
2163                 }
2164         }
2165
2166         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2167             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2168                 return 0;
2169
2170         return i40e_sync_vsi_filters(vsi);
2171 }
2172
2173 /**
2174  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2175  * @netdev: network interface to be adjusted
2176  * @vid: vlan id to be added
2177  *
2178  * net_device_ops implementation for adding vlan ids
2179  **/
2180 #ifdef I40E_FCOE
2181 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2182                          __always_unused __be16 proto, u16 vid)
2183 #else
2184 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2185                                 __always_unused __be16 proto, u16 vid)
2186 #endif
2187 {
2188         struct i40e_netdev_priv *np = netdev_priv(netdev);
2189         struct i40e_vsi *vsi = np->vsi;
2190         int ret = 0;
2191
2192         if (vid > 4095)
2193                 return -EINVAL;
2194
2195         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2196
2197         /* If the network stack called us with vid = 0 then
2198          * it is asking to receive priority tagged packets with
2199          * vlan id 0.  Our HW receives them by default when configured
2200          * to receive untagged packets so there is no need to add an
2201          * extra filter for vlan 0 tagged packets.
2202          */
2203         if (vid)
2204                 ret = i40e_vsi_add_vlan(vsi, vid);
2205
2206         if (!ret && (vid < VLAN_N_VID))
2207                 set_bit(vid, vsi->active_vlans);
2208
2209         return ret;
2210 }
2211
2212 /**
2213  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2214  * @netdev: network interface to be adjusted
2215  * @vid: vlan id to be removed
2216  *
2217  * net_device_ops implementation for removing vlan ids
2218  **/
2219 #ifdef I40E_FCOE
2220 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2221                           __always_unused __be16 proto, u16 vid)
2222 #else
2223 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2224                                  __always_unused __be16 proto, u16 vid)
2225 #endif
2226 {
2227         struct i40e_netdev_priv *np = netdev_priv(netdev);
2228         struct i40e_vsi *vsi = np->vsi;
2229
2230         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2231
2232         /* return code is ignored as there is nothing a user
2233          * can do about failure to remove and a log message was
2234          * already printed from the other function
2235          */
2236         i40e_vsi_kill_vlan(vsi, vid);
2237
2238         clear_bit(vid, vsi->active_vlans);
2239
2240         return 0;
2241 }
2242
2243 /**
2244  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2245  * @vsi: the vsi being brought back up
2246  **/
2247 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2248 {
2249         u16 vid;
2250
2251         if (!vsi->netdev)
2252                 return;
2253
2254         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2255
2256         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2257                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2258                                      vid);
2259 }
2260
2261 /**
2262  * i40e_vsi_add_pvid - Add pvid for the VSI
2263  * @vsi: the vsi being adjusted
2264  * @vid: the vlan id to set as a PVID
2265  **/
2266 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2267 {
2268         struct i40e_vsi_context ctxt;
2269         i40e_status aq_ret;
2270
2271         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2272         vsi->info.pvid = cpu_to_le16(vid);
2273         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2274                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2275                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2276
2277         ctxt.seid = vsi->seid;
2278         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2279         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2280         if (aq_ret) {
2281                 dev_info(&vsi->back->pdev->dev,
2282                          "%s: update vsi failed, aq_err=%d\n",
2283                          __func__, vsi->back->hw.aq.asq_last_status);
2284                 return -ENOENT;
2285         }
2286
2287         return 0;
2288 }
2289
2290 /**
2291  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2292  * @vsi: the vsi being adjusted
2293  *
2294  * Just use the vlan_rx_register() service to put it back to normal
2295  **/
2296 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2297 {
2298         i40e_vlan_stripping_disable(vsi);
2299
2300         vsi->info.pvid = 0;
2301 }
2302
2303 /**
2304  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2305  * @vsi: ptr to the VSI
2306  *
2307  * If this function returns with an error, then it's possible one or
2308  * more of the rings is populated (while the rest are not).  It is the
2309  * callers duty to clean those orphaned rings.
2310  *
2311  * Return 0 on success, negative on failure
2312  **/
2313 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2314 {
2315         int i, err = 0;
2316
2317         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2318                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2319
2320         return err;
2321 }
2322
2323 /**
2324  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2325  * @vsi: ptr to the VSI
2326  *
2327  * Free VSI's transmit software resources
2328  **/
2329 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2330 {
2331         int i;
2332
2333         if (!vsi->tx_rings)
2334                 return;
2335
2336         for (i = 0; i < vsi->num_queue_pairs; i++)
2337                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2338                         i40e_free_tx_resources(vsi->tx_rings[i]);
2339 }
2340
2341 /**
2342  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2343  * @vsi: ptr to the VSI
2344  *
2345  * If this function returns with an error, then it's possible one or
2346  * more of the rings is populated (while the rest are not).  It is the
2347  * callers duty to clean those orphaned rings.
2348  *
2349  * Return 0 on success, negative on failure
2350  **/
2351 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2352 {
2353         int i, err = 0;
2354
2355         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2356                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2357 #ifdef I40E_FCOE
2358         i40e_fcoe_setup_ddp_resources(vsi);
2359 #endif
2360         return err;
2361 }
2362
2363 /**
2364  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2365  * @vsi: ptr to the VSI
2366  *
2367  * Free all receive software resources
2368  **/
2369 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2370 {
2371         int i;
2372
2373         if (!vsi->rx_rings)
2374                 return;
2375
2376         for (i = 0; i < vsi->num_queue_pairs; i++)
2377                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2378                         i40e_free_rx_resources(vsi->rx_rings[i]);
2379 #ifdef I40E_FCOE
2380         i40e_fcoe_free_ddp_resources(vsi);
2381 #endif
2382 }
2383
2384 /**
2385  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2386  * @ring: The Tx ring to configure
2387  *
2388  * This enables/disables XPS for a given Tx descriptor ring
2389  * based on the TCs enabled for the VSI that ring belongs to.
2390  **/
2391 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2392 {
2393         struct i40e_vsi *vsi = ring->vsi;
2394         cpumask_var_t mask;
2395
2396         if (ring->q_vector && ring->netdev) {
2397                 /* Single TC mode enable XPS */
2398                 if (vsi->tc_config.numtc <= 1 &&
2399                     !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state)) {
2400                         netif_set_xps_queue(ring->netdev,
2401                                             &ring->q_vector->affinity_mask,
2402                                             ring->queue_index);
2403                 } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2404                         /* Disable XPS to allow selection based on TC */
2405                         bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2406                         netif_set_xps_queue(ring->netdev, mask,
2407                                             ring->queue_index);
2408                         free_cpumask_var(mask);
2409                 }
2410         }
2411 }
2412
2413 /**
2414  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2415  * @ring: The Tx ring to configure
2416  *
2417  * Configure the Tx descriptor ring in the HMC context.
2418  **/
2419 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2420 {
2421         struct i40e_vsi *vsi = ring->vsi;
2422         u16 pf_q = vsi->base_queue + ring->queue_index;
2423         struct i40e_hw *hw = &vsi->back->hw;
2424         struct i40e_hmc_obj_txq tx_ctx;
2425         i40e_status err = 0;
2426         u32 qtx_ctl = 0;
2427
2428         /* some ATR related tx ring init */
2429         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2430                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2431                 ring->atr_count = 0;
2432         } else {
2433                 ring->atr_sample_rate = 0;
2434         }
2435
2436         /* configure XPS */
2437         i40e_config_xps_tx_ring(ring);
2438
2439         /* clear the context structure first */
2440         memset(&tx_ctx, 0, sizeof(tx_ctx));
2441
2442         tx_ctx.new_context = 1;
2443         tx_ctx.base = (ring->dma / 128);
2444         tx_ctx.qlen = ring->count;
2445         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2446                                                I40E_FLAG_FD_ATR_ENABLED));
2447 #ifdef I40E_FCOE
2448         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2449 #endif
2450         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2451         /* FDIR VSI tx ring can still use RS bit and writebacks */
2452         if (vsi->type != I40E_VSI_FDIR)
2453                 tx_ctx.head_wb_ena = 1;
2454         tx_ctx.head_wb_addr = ring->dma +
2455                               (ring->count * sizeof(struct i40e_tx_desc));
2456
2457         /* As part of VSI creation/update, FW allocates certain
2458          * Tx arbitration queue sets for each TC enabled for
2459          * the VSI. The FW returns the handles to these queue
2460          * sets as part of the response buffer to Add VSI,
2461          * Update VSI, etc. AQ commands. It is expected that
2462          * these queue set handles be associated with the Tx
2463          * queues by the driver as part of the TX queue context
2464          * initialization. This has to be done regardless of
2465          * DCB as by default everything is mapped to TC0.
2466          */
2467         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2468         tx_ctx.rdylist_act = 0;
2469
2470         /* clear the context in the HMC */
2471         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2472         if (err) {
2473                 dev_info(&vsi->back->pdev->dev,
2474                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2475                          ring->queue_index, pf_q, err);
2476                 return -ENOMEM;
2477         }
2478
2479         /* set the context in the HMC */
2480         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2481         if (err) {
2482                 dev_info(&vsi->back->pdev->dev,
2483                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2484                          ring->queue_index, pf_q, err);
2485                 return -ENOMEM;
2486         }
2487
2488         /* Now associate this queue with this PCI function */
2489         if (vsi->type == I40E_VSI_VMDQ2) {
2490                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2491                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2492                            I40E_QTX_CTL_VFVM_INDX_MASK;
2493         } else {
2494                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2495         }
2496
2497         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2498                     I40E_QTX_CTL_PF_INDX_MASK);
2499         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2500         i40e_flush(hw);
2501
2502         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2503
2504         /* cache tail off for easier writes later */
2505         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2506
2507         return 0;
2508 }
2509
2510 /**
2511  * i40e_configure_rx_ring - Configure a receive ring context
2512  * @ring: The Rx ring to configure
2513  *
2514  * Configure the Rx descriptor ring in the HMC context.
2515  **/
2516 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2517 {
2518         struct i40e_vsi *vsi = ring->vsi;
2519         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2520         u16 pf_q = vsi->base_queue + ring->queue_index;
2521         struct i40e_hw *hw = &vsi->back->hw;
2522         struct i40e_hmc_obj_rxq rx_ctx;
2523         i40e_status err = 0;
2524
2525         ring->state = 0;
2526
2527         /* clear the context structure first */
2528         memset(&rx_ctx, 0, sizeof(rx_ctx));
2529
2530         ring->rx_buf_len = vsi->rx_buf_len;
2531         ring->rx_hdr_len = vsi->rx_hdr_len;
2532
2533         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2534         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2535
2536         rx_ctx.base = (ring->dma / 128);
2537         rx_ctx.qlen = ring->count;
2538
2539         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2540                 set_ring_16byte_desc_enabled(ring);
2541                 rx_ctx.dsize = 0;
2542         } else {
2543                 rx_ctx.dsize = 1;
2544         }
2545
2546         rx_ctx.dtype = vsi->dtype;
2547         if (vsi->dtype) {
2548                 set_ring_ps_enabled(ring);
2549                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2550                                   I40E_RX_SPLIT_IP      |
2551                                   I40E_RX_SPLIT_TCP_UDP |
2552                                   I40E_RX_SPLIT_SCTP;
2553         } else {
2554                 rx_ctx.hsplit_0 = 0;
2555         }
2556
2557         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2558                                   (chain_len * ring->rx_buf_len));
2559         if (hw->revision_id == 0)
2560                 rx_ctx.lrxqthresh = 0;
2561         else
2562                 rx_ctx.lrxqthresh = 2;
2563         rx_ctx.crcstrip = 1;
2564         rx_ctx.l2tsel = 1;
2565         rx_ctx.showiv = 1;
2566 #ifdef I40E_FCOE
2567         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2568 #endif
2569         /* set the prefena field to 1 because the manual says to */
2570         rx_ctx.prefena = 1;
2571
2572         /* clear the context in the HMC */
2573         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2574         if (err) {
2575                 dev_info(&vsi->back->pdev->dev,
2576                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2577                          ring->queue_index, pf_q, err);
2578                 return -ENOMEM;
2579         }
2580
2581         /* set the context in the HMC */
2582         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2583         if (err) {
2584                 dev_info(&vsi->back->pdev->dev,
2585                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2586                          ring->queue_index, pf_q, err);
2587                 return -ENOMEM;
2588         }
2589
2590         /* cache tail for quicker writes, and clear the reg before use */
2591         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2592         writel(0, ring->tail);
2593
2594         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2595
2596         return 0;
2597 }
2598
2599 /**
2600  * i40e_vsi_configure_tx - Configure the VSI for Tx
2601  * @vsi: VSI structure describing this set of rings and resources
2602  *
2603  * Configure the Tx VSI for operation.
2604  **/
2605 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2606 {
2607         int err = 0;
2608         u16 i;
2609
2610         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2611                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2612
2613         return err;
2614 }
2615
2616 /**
2617  * i40e_vsi_configure_rx - Configure the VSI for Rx
2618  * @vsi: the VSI being configured
2619  *
2620  * Configure the Rx VSI for operation.
2621  **/
2622 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2623 {
2624         int err = 0;
2625         u16 i;
2626
2627         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2628                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2629                                + ETH_FCS_LEN + VLAN_HLEN;
2630         else
2631                 vsi->max_frame = I40E_RXBUFFER_2048;
2632
2633         /* figure out correct receive buffer length */
2634         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2635                                     I40E_FLAG_RX_PS_ENABLED)) {
2636         case I40E_FLAG_RX_1BUF_ENABLED:
2637                 vsi->rx_hdr_len = 0;
2638                 vsi->rx_buf_len = vsi->max_frame;
2639                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2640                 break;
2641         case I40E_FLAG_RX_PS_ENABLED:
2642                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2643                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2644                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2645                 break;
2646         default:
2647                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2648                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2649                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2650                 break;
2651         }
2652
2653 #ifdef I40E_FCOE
2654         /* setup rx buffer for FCoE */
2655         if ((vsi->type == I40E_VSI_FCOE) &&
2656             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2657                 vsi->rx_hdr_len = 0;
2658                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2659                 vsi->max_frame = I40E_RXBUFFER_3072;
2660                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2661         }
2662
2663 #endif /* I40E_FCOE */
2664         /* round up for the chip's needs */
2665         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2666                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2667         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2668                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2669
2670         /* set up individual rings */
2671         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2672                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2673
2674         return err;
2675 }
2676
2677 /**
2678  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2679  * @vsi: ptr to the VSI
2680  **/
2681 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2682 {
2683         struct i40e_ring *tx_ring, *rx_ring;
2684         u16 qoffset, qcount;
2685         int i, n;
2686
2687         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2688                 return;
2689
2690         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2691                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2692                         continue;
2693
2694                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2695                 qcount = vsi->tc_config.tc_info[n].qcount;
2696                 for (i = qoffset; i < (qoffset + qcount); i++) {
2697                         rx_ring = vsi->rx_rings[i];
2698                         tx_ring = vsi->tx_rings[i];
2699                         rx_ring->dcb_tc = n;
2700                         tx_ring->dcb_tc = n;
2701                 }
2702         }
2703 }
2704
2705 /**
2706  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2707  * @vsi: ptr to the VSI
2708  **/
2709 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2710 {
2711         if (vsi->netdev)
2712                 i40e_set_rx_mode(vsi->netdev);
2713 }
2714
2715 /**
2716  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2717  * @vsi: Pointer to the targeted VSI
2718  *
2719  * This function replays the hlist on the hw where all the SB Flow Director
2720  * filters were saved.
2721  **/
2722 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2723 {
2724         struct i40e_fdir_filter *filter;
2725         struct i40e_pf *pf = vsi->back;
2726         struct hlist_node *node;
2727
2728         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2729                 return;
2730
2731         hlist_for_each_entry_safe(filter, node,
2732                                   &pf->fdir_filter_list, fdir_node) {
2733                 i40e_add_del_fdir(vsi, filter, true);
2734         }
2735 }
2736
2737 /**
2738  * i40e_vsi_configure - Set up the VSI for action
2739  * @vsi: the VSI being configured
2740  **/
2741 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2742 {
2743         int err;
2744
2745         i40e_set_vsi_rx_mode(vsi);
2746         i40e_restore_vlan(vsi);
2747         i40e_vsi_config_dcb_rings(vsi);
2748         err = i40e_vsi_configure_tx(vsi);
2749         if (!err)
2750                 err = i40e_vsi_configure_rx(vsi);
2751
2752         return err;
2753 }
2754
2755 /**
2756  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2757  * @vsi: the VSI being configured
2758  **/
2759 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2760 {
2761         struct i40e_pf *pf = vsi->back;
2762         struct i40e_q_vector *q_vector;
2763         struct i40e_hw *hw = &pf->hw;
2764         u16 vector;
2765         int i, q;
2766         u32 val;
2767         u32 qp;
2768
2769         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2770          * and PFINT_LNKLSTn registers, e.g.:
2771          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2772          */
2773         qp = vsi->base_queue;
2774         vector = vsi->base_vector;
2775         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2776                 q_vector = vsi->q_vectors[i];
2777                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2778                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2779                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2780                      q_vector->rx.itr);
2781                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2782                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2783                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2784                      q_vector->tx.itr);
2785
2786                 /* Linked list for the queuepairs assigned to this vector */
2787                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2788                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2789                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2790                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2791                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2792                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2793                               (I40E_QUEUE_TYPE_TX
2794                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2795
2796                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2797
2798                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2799                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2800                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2801                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2802                               (I40E_QUEUE_TYPE_RX
2803                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2804
2805                         /* Terminate the linked list */
2806                         if (q == (q_vector->num_ringpairs - 1))
2807                                 val |= (I40E_QUEUE_END_OF_LIST
2808                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2809
2810                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2811                         qp++;
2812                 }
2813         }
2814
2815         i40e_flush(hw);
2816 }
2817
2818 /**
2819  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2820  * @hw: ptr to the hardware info
2821  **/
2822 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2823 {
2824         struct i40e_hw *hw = &pf->hw;
2825         u32 val;
2826
2827         /* clear things first */
2828         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2829         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2830
2831         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2832               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2833               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2834               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2835               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2836               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2837               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2838               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2839
2840         if (pf->flags & I40E_FLAG_PTP)
2841                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2842
2843         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2844
2845         /* SW_ITR_IDX = 0, but don't change INTENA */
2846         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2847                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2848
2849         /* OTHER_ITR_IDX = 0 */
2850         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2851 }
2852
2853 /**
2854  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2855  * @vsi: the VSI being configured
2856  **/
2857 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2858 {
2859         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2860         struct i40e_pf *pf = vsi->back;
2861         struct i40e_hw *hw = &pf->hw;
2862         u32 val;
2863
2864         /* set the ITR configuration */
2865         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2866         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2867         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2868         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2869         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2870         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2871
2872         i40e_enable_misc_int_causes(pf);
2873
2874         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2875         wr32(hw, I40E_PFINT_LNKLST0, 0);
2876
2877         /* Associate the queue pair to the vector and enable the queue int */
2878         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2879               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2880               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2881
2882         wr32(hw, I40E_QINT_RQCTL(0), val);
2883
2884         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2885               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2886               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2887
2888         wr32(hw, I40E_QINT_TQCTL(0), val);
2889         i40e_flush(hw);
2890 }
2891
2892 /**
2893  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2894  * @pf: board private structure
2895  **/
2896 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2897 {
2898         struct i40e_hw *hw = &pf->hw;
2899
2900         wr32(hw, I40E_PFINT_DYN_CTL0,
2901              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2902         i40e_flush(hw);
2903 }
2904
2905 /**
2906  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2907  * @pf: board private structure
2908  **/
2909 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2910 {
2911         struct i40e_hw *hw = &pf->hw;
2912         u32 val;
2913
2914         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2915               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2916               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2917
2918         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2919         i40e_flush(hw);
2920 }
2921
2922 /**
2923  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2924  * @vsi: pointer to a vsi
2925  * @vector: enable a particular Hw Interrupt vector
2926  **/
2927 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2928 {
2929         struct i40e_pf *pf = vsi->back;
2930         struct i40e_hw *hw = &pf->hw;
2931         u32 val;
2932
2933         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2934               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2935               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2936         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2937         /* skip the flush */
2938 }
2939
2940 /**
2941  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
2942  * @vsi: pointer to a vsi
2943  * @vector: disable a particular Hw Interrupt vector
2944  **/
2945 void i40e_irq_dynamic_disable(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_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
2952         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2953         i40e_flush(hw);
2954 }
2955
2956 /**
2957  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2958  * @irq: interrupt number
2959  * @data: pointer to a q_vector
2960  **/
2961 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2962 {
2963         struct i40e_q_vector *q_vector = data;
2964
2965         if (!q_vector->tx.ring && !q_vector->rx.ring)
2966                 return IRQ_HANDLED;
2967
2968         napi_schedule(&q_vector->napi);
2969
2970         return IRQ_HANDLED;
2971 }
2972
2973 /**
2974  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2975  * @vsi: the VSI being configured
2976  * @basename: name for the vector
2977  *
2978  * Allocates MSI-X vectors and requests interrupts from the kernel.
2979  **/
2980 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2981 {
2982         int q_vectors = vsi->num_q_vectors;
2983         struct i40e_pf *pf = vsi->back;
2984         int base = vsi->base_vector;
2985         int rx_int_idx = 0;
2986         int tx_int_idx = 0;
2987         int vector, err;
2988
2989         for (vector = 0; vector < q_vectors; vector++) {
2990                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2991
2992                 if (q_vector->tx.ring && q_vector->rx.ring) {
2993                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2994                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2995                         tx_int_idx++;
2996                 } else if (q_vector->rx.ring) {
2997                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2998                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
2999                 } else if (q_vector->tx.ring) {
3000                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3001                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3002                 } else {
3003                         /* skip this unused q_vector */
3004                         continue;
3005                 }
3006                 err = request_irq(pf->msix_entries[base + vector].vector,
3007                                   vsi->irq_handler,
3008                                   0,
3009                                   q_vector->name,
3010                                   q_vector);
3011                 if (err) {
3012                         dev_info(&pf->pdev->dev,
3013                                  "%s: request_irq failed, error: %d\n",
3014                                  __func__, err);
3015                         goto free_queue_irqs;
3016                 }
3017                 /* assign the mask for this irq */
3018                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3019                                       &q_vector->affinity_mask);
3020         }
3021
3022         vsi->irqs_ready = true;
3023         return 0;
3024
3025 free_queue_irqs:
3026         while (vector) {
3027                 vector--;
3028                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3029                                       NULL);
3030                 free_irq(pf->msix_entries[base + vector].vector,
3031                          &(vsi->q_vectors[vector]));
3032         }
3033         return err;
3034 }
3035
3036 /**
3037  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3038  * @vsi: the VSI being un-configured
3039  **/
3040 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3041 {
3042         struct i40e_pf *pf = vsi->back;
3043         struct i40e_hw *hw = &pf->hw;
3044         int base = vsi->base_vector;
3045         int i;
3046
3047         for (i = 0; i < vsi->num_queue_pairs; i++) {
3048                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3049                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3050         }
3051
3052         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3053                 for (i = vsi->base_vector;
3054                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3055                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3056
3057                 i40e_flush(hw);
3058                 for (i = 0; i < vsi->num_q_vectors; i++)
3059                         synchronize_irq(pf->msix_entries[i + base].vector);
3060         } else {
3061                 /* Legacy and MSI mode - this stops all interrupt handling */
3062                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3063                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3064                 i40e_flush(hw);
3065                 synchronize_irq(pf->pdev->irq);
3066         }
3067 }
3068
3069 /**
3070  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3071  * @vsi: the VSI being configured
3072  **/
3073 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3074 {
3075         struct i40e_pf *pf = vsi->back;
3076         int i;
3077
3078         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3079                 for (i = vsi->base_vector;
3080                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3081                         i40e_irq_dynamic_enable(vsi, i);
3082         } else {
3083                 i40e_irq_dynamic_enable_icr0(pf);
3084         }
3085
3086         i40e_flush(&pf->hw);
3087         return 0;
3088 }
3089
3090 /**
3091  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3092  * @pf: board private structure
3093  **/
3094 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3095 {
3096         /* Disable ICR 0 */
3097         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3098         i40e_flush(&pf->hw);
3099 }
3100
3101 /**
3102  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3103  * @irq: interrupt number
3104  * @data: pointer to a q_vector
3105  *
3106  * This is the handler used for all MSI/Legacy interrupts, and deals
3107  * with both queue and non-queue interrupts.  This is also used in
3108  * MSIX mode to handle the non-queue interrupts.
3109  **/
3110 static irqreturn_t i40e_intr(int irq, void *data)
3111 {
3112         struct i40e_pf *pf = (struct i40e_pf *)data;
3113         struct i40e_hw *hw = &pf->hw;
3114         irqreturn_t ret = IRQ_NONE;
3115         u32 icr0, icr0_remaining;
3116         u32 val, ena_mask;
3117
3118         icr0 = rd32(hw, I40E_PFINT_ICR0);
3119         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3120
3121         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3122         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3123                 goto enable_intr;
3124
3125         /* if interrupt but no bits showing, must be SWINT */
3126         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3127             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3128                 pf->sw_int_count++;
3129
3130         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3131         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3132
3133                 /* temporarily disable queue cause for NAPI processing */
3134                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3135                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3136                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3137
3138                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3139                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3140                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3141
3142                 if (!test_bit(__I40E_DOWN, &pf->state))
3143                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3144         }
3145
3146         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3147                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3148                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3149         }
3150
3151         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3152                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3153                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3154         }
3155
3156         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3157                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3158                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3159         }
3160
3161         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3162                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3163                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3164                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3165                 val = rd32(hw, I40E_GLGEN_RSTAT);
3166                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3167                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3168                 if (val == I40E_RESET_CORER) {
3169                         pf->corer_count++;
3170                 } else if (val == I40E_RESET_GLOBR) {
3171                         pf->globr_count++;
3172                 } else if (val == I40E_RESET_EMPR) {
3173                         pf->empr_count++;
3174                         set_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
3175                 }
3176         }
3177
3178         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3179                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3180                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3181         }
3182
3183         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3184                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3185
3186                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3187                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3188                         i40e_ptp_tx_hwtstamp(pf);
3189                 }
3190         }
3191
3192         /* If a critical error is pending we have no choice but to reset the
3193          * device.
3194          * Report and mask out any remaining unexpected interrupts.
3195          */
3196         icr0_remaining = icr0 & ena_mask;
3197         if (icr0_remaining) {
3198                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3199                          icr0_remaining);
3200                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3201                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3202                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3203                         dev_info(&pf->pdev->dev, "device will be reset\n");
3204                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3205                         i40e_service_event_schedule(pf);
3206                 }
3207                 ena_mask &= ~icr0_remaining;
3208         }
3209         ret = IRQ_HANDLED;
3210
3211 enable_intr:
3212         /* re-enable interrupt causes */
3213         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3214         if (!test_bit(__I40E_DOWN, &pf->state)) {
3215                 i40e_service_event_schedule(pf);
3216                 i40e_irq_dynamic_enable_icr0(pf);
3217         }
3218
3219         return ret;
3220 }
3221
3222 /**
3223  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3224  * @tx_ring:  tx ring to clean
3225  * @budget:   how many cleans we're allowed
3226  *
3227  * Returns true if there's any budget left (e.g. the clean is finished)
3228  **/
3229 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3230 {
3231         struct i40e_vsi *vsi = tx_ring->vsi;
3232         u16 i = tx_ring->next_to_clean;
3233         struct i40e_tx_buffer *tx_buf;
3234         struct i40e_tx_desc *tx_desc;
3235
3236         tx_buf = &tx_ring->tx_bi[i];
3237         tx_desc = I40E_TX_DESC(tx_ring, i);
3238         i -= tx_ring->count;
3239
3240         do {
3241                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3242
3243                 /* if next_to_watch is not set then there is no work pending */
3244                 if (!eop_desc)
3245                         break;
3246
3247                 /* prevent any other reads prior to eop_desc */
3248                 read_barrier_depends();
3249
3250                 /* if the descriptor isn't done, no work yet to do */
3251                 if (!(eop_desc->cmd_type_offset_bsz &
3252                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3253                         break;
3254
3255                 /* clear next_to_watch to prevent false hangs */
3256                 tx_buf->next_to_watch = NULL;
3257
3258                 tx_desc->buffer_addr = 0;
3259                 tx_desc->cmd_type_offset_bsz = 0;
3260                 /* move past filter desc */
3261                 tx_buf++;
3262                 tx_desc++;
3263                 i++;
3264                 if (unlikely(!i)) {
3265                         i -= tx_ring->count;
3266                         tx_buf = tx_ring->tx_bi;
3267                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3268                 }
3269                 /* unmap skb header data */
3270                 dma_unmap_single(tx_ring->dev,
3271                                  dma_unmap_addr(tx_buf, dma),
3272                                  dma_unmap_len(tx_buf, len),
3273                                  DMA_TO_DEVICE);
3274                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3275                         kfree(tx_buf->raw_buf);
3276
3277                 tx_buf->raw_buf = NULL;
3278                 tx_buf->tx_flags = 0;
3279                 tx_buf->next_to_watch = NULL;
3280                 dma_unmap_len_set(tx_buf, len, 0);
3281                 tx_desc->buffer_addr = 0;
3282                 tx_desc->cmd_type_offset_bsz = 0;
3283
3284                 /* move us past the eop_desc for start of next FD desc */
3285                 tx_buf++;
3286                 tx_desc++;
3287                 i++;
3288                 if (unlikely(!i)) {
3289                         i -= tx_ring->count;
3290                         tx_buf = tx_ring->tx_bi;
3291                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3292                 }
3293
3294                 /* update budget accounting */
3295                 budget--;
3296         } while (likely(budget));
3297
3298         i += tx_ring->count;
3299         tx_ring->next_to_clean = i;
3300
3301         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3302                 i40e_irq_dynamic_enable(vsi,
3303                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3304         }
3305         return budget > 0;
3306 }
3307
3308 /**
3309  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3310  * @irq: interrupt number
3311  * @data: pointer to a q_vector
3312  **/
3313 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3314 {
3315         struct i40e_q_vector *q_vector = data;
3316         struct i40e_vsi *vsi;
3317
3318         if (!q_vector->tx.ring)
3319                 return IRQ_HANDLED;
3320
3321         vsi = q_vector->tx.ring->vsi;
3322         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3323
3324         return IRQ_HANDLED;
3325 }
3326
3327 /**
3328  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3329  * @vsi: the VSI being configured
3330  * @v_idx: vector index
3331  * @qp_idx: queue pair index
3332  **/
3333 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3334 {
3335         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3336         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3337         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3338
3339         tx_ring->q_vector = q_vector;
3340         tx_ring->next = q_vector->tx.ring;
3341         q_vector->tx.ring = tx_ring;
3342         q_vector->tx.count++;
3343
3344         rx_ring->q_vector = q_vector;
3345         rx_ring->next = q_vector->rx.ring;
3346         q_vector->rx.ring = rx_ring;
3347         q_vector->rx.count++;
3348 }
3349
3350 /**
3351  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3352  * @vsi: the VSI being configured
3353  *
3354  * This function maps descriptor rings to the queue-specific vectors
3355  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3356  * one vector per queue pair, but on a constrained vector budget, we
3357  * group the queue pairs as "efficiently" as possible.
3358  **/
3359 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3360 {
3361         int qp_remaining = vsi->num_queue_pairs;
3362         int q_vectors = vsi->num_q_vectors;
3363         int num_ringpairs;
3364         int v_start = 0;
3365         int qp_idx = 0;
3366
3367         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3368          * group them so there are multiple queues per vector.
3369          * It is also important to go through all the vectors available to be
3370          * sure that if we don't use all the vectors, that the remaining vectors
3371          * are cleared. This is especially important when decreasing the
3372          * number of queues in use.
3373          */
3374         for (; v_start < q_vectors; v_start++) {
3375                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3376
3377                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3378
3379                 q_vector->num_ringpairs = num_ringpairs;
3380
3381                 q_vector->rx.count = 0;
3382                 q_vector->tx.count = 0;
3383                 q_vector->rx.ring = NULL;
3384                 q_vector->tx.ring = NULL;
3385
3386                 while (num_ringpairs--) {
3387                         map_vector_to_qp(vsi, v_start, qp_idx);
3388                         qp_idx++;
3389                         qp_remaining--;
3390                 }
3391         }
3392 }
3393
3394 /**
3395  * i40e_vsi_request_irq - Request IRQ from the OS
3396  * @vsi: the VSI being configured
3397  * @basename: name for the vector
3398  **/
3399 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3400 {
3401         struct i40e_pf *pf = vsi->back;
3402         int err;
3403
3404         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3405                 err = i40e_vsi_request_irq_msix(vsi, basename);
3406         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3407                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3408                                   pf->int_name, pf);
3409         else
3410                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3411                                   pf->int_name, pf);
3412
3413         if (err)
3414                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3415
3416         return err;
3417 }
3418
3419 #ifdef CONFIG_NET_POLL_CONTROLLER
3420 /**
3421  * i40e_netpoll - A Polling 'interrupt'handler
3422  * @netdev: network interface device structure
3423  *
3424  * This is used by netconsole to send skbs without having to re-enable
3425  * interrupts.  It's not called while the normal interrupt routine is executing.
3426  **/
3427 #ifdef I40E_FCOE
3428 void i40e_netpoll(struct net_device *netdev)
3429 #else
3430 static void i40e_netpoll(struct net_device *netdev)
3431 #endif
3432 {
3433         struct i40e_netdev_priv *np = netdev_priv(netdev);
3434         struct i40e_vsi *vsi = np->vsi;
3435         struct i40e_pf *pf = vsi->back;
3436         int i;
3437
3438         /* if interface is down do nothing */
3439         if (test_bit(__I40E_DOWN, &vsi->state))
3440                 return;
3441
3442         pf->flags |= I40E_FLAG_IN_NETPOLL;
3443         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3444                 for (i = 0; i < vsi->num_q_vectors; i++)
3445                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3446         } else {
3447                 i40e_intr(pf->pdev->irq, netdev);
3448         }
3449         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3450 }
3451 #endif
3452
3453 /**
3454  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3455  * @pf: the PF being configured
3456  * @pf_q: the PF queue
3457  * @enable: enable or disable state of the queue
3458  *
3459  * This routine will wait for the given Tx queue of the PF to reach the
3460  * enabled or disabled state.
3461  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3462  * multiple retries; else will return 0 in case of success.
3463  **/
3464 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3465 {
3466         int i;
3467         u32 tx_reg;
3468
3469         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3470                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3471                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3472                         break;
3473
3474                 usleep_range(10, 20);
3475         }
3476         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3477                 return -ETIMEDOUT;
3478
3479         return 0;
3480 }
3481
3482 /**
3483  * i40e_vsi_control_tx - Start or stop a VSI's rings
3484  * @vsi: the VSI being configured
3485  * @enable: start or stop the rings
3486  **/
3487 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3488 {
3489         struct i40e_pf *pf = vsi->back;
3490         struct i40e_hw *hw = &pf->hw;
3491         int i, j, pf_q, ret = 0;
3492         u32 tx_reg;
3493
3494         pf_q = vsi->base_queue;
3495         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3496
3497                 /* warn the TX unit of coming changes */
3498                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3499                 if (!enable)
3500                         usleep_range(10, 20);
3501
3502                 for (j = 0; j < 50; j++) {
3503                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3504                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3505                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3506                                 break;
3507                         usleep_range(1000, 2000);
3508                 }
3509                 /* Skip if the queue is already in the requested state */
3510                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3511                         continue;
3512
3513                 /* turn on/off the queue */
3514                 if (enable) {
3515                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3516                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3517                 } else {
3518                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3519                 }
3520
3521                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3522                 /* No waiting for the Tx queue to disable */
3523                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3524                         continue;
3525
3526                 /* wait for the change to finish */
3527                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3528                 if (ret) {
3529                         dev_info(&pf->pdev->dev,
3530                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3531                                  __func__, vsi->seid, pf_q,
3532                                  (enable ? "en" : "dis"));
3533                         break;
3534                 }
3535         }
3536
3537         if (hw->revision_id == 0)
3538                 mdelay(50);
3539         return ret;
3540 }
3541
3542 /**
3543  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3544  * @pf: the PF being configured
3545  * @pf_q: the PF queue
3546  * @enable: enable or disable state of the queue
3547  *
3548  * This routine will wait for the given Rx queue of the PF to reach the
3549  * enabled or disabled state.
3550  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3551  * multiple retries; else will return 0 in case of success.
3552  **/
3553 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3554 {
3555         int i;
3556         u32 rx_reg;
3557
3558         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3559                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3560                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3561                         break;
3562
3563                 usleep_range(10, 20);
3564         }
3565         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3566                 return -ETIMEDOUT;
3567
3568         return 0;
3569 }
3570
3571 /**
3572  * i40e_vsi_control_rx - Start or stop a VSI's rings
3573  * @vsi: the VSI being configured
3574  * @enable: start or stop the rings
3575  **/
3576 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3577 {
3578         struct i40e_pf *pf = vsi->back;
3579         struct i40e_hw *hw = &pf->hw;
3580         int i, j, pf_q, ret = 0;
3581         u32 rx_reg;
3582
3583         pf_q = vsi->base_queue;
3584         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3585                 for (j = 0; j < 50; j++) {
3586                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3587                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3588                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3589                                 break;
3590                         usleep_range(1000, 2000);
3591                 }
3592
3593                 /* Skip if the queue is already in the requested state */
3594                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3595                         continue;
3596
3597                 /* turn on/off the queue */
3598                 if (enable)
3599                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3600                 else
3601                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3602                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3603
3604                 /* wait for the change to finish */
3605                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3606                 if (ret) {
3607                         dev_info(&pf->pdev->dev,
3608                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3609                                  __func__, vsi->seid, pf_q,
3610                                  (enable ? "en" : "dis"));
3611                         break;
3612                 }
3613         }
3614
3615         return ret;
3616 }
3617
3618 /**
3619  * i40e_vsi_control_rings - Start or stop a VSI's rings
3620  * @vsi: the VSI being configured
3621  * @enable: start or stop the rings
3622  **/
3623 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3624 {
3625         int ret = 0;
3626
3627         /* do rx first for enable and last for disable */
3628         if (request) {
3629                 ret = i40e_vsi_control_rx(vsi, request);
3630                 if (ret)
3631                         return ret;
3632                 ret = i40e_vsi_control_tx(vsi, request);
3633         } else {
3634                 /* Ignore return value, we need to shutdown whatever we can */
3635                 i40e_vsi_control_tx(vsi, request);
3636                 i40e_vsi_control_rx(vsi, request);
3637         }
3638
3639         return ret;
3640 }
3641
3642 /**
3643  * i40e_vsi_free_irq - Free the irq association with the OS
3644  * @vsi: the VSI being configured
3645  **/
3646 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3647 {
3648         struct i40e_pf *pf = vsi->back;
3649         struct i40e_hw *hw = &pf->hw;
3650         int base = vsi->base_vector;
3651         u32 val, qp;
3652         int i;
3653
3654         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3655                 if (!vsi->q_vectors)
3656                         return;
3657
3658                 if (!vsi->irqs_ready)
3659                         return;
3660
3661                 vsi->irqs_ready = false;
3662                 for (i = 0; i < vsi->num_q_vectors; i++) {
3663                         u16 vector = i + base;
3664
3665                         /* free only the irqs that were actually requested */
3666                         if (!vsi->q_vectors[i] ||
3667                             !vsi->q_vectors[i]->num_ringpairs)
3668                                 continue;
3669
3670                         /* clear the affinity_mask in the IRQ descriptor */
3671                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3672                                               NULL);
3673                         free_irq(pf->msix_entries[vector].vector,
3674                                  vsi->q_vectors[i]);
3675
3676                         /* Tear down the interrupt queue link list
3677                          *
3678                          * We know that they come in pairs and always
3679                          * the Rx first, then the Tx.  To clear the
3680                          * link list, stick the EOL value into the
3681                          * next_q field of the registers.
3682                          */
3683                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3684                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3685                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3686                         val |= I40E_QUEUE_END_OF_LIST
3687                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3688                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3689
3690                         while (qp != I40E_QUEUE_END_OF_LIST) {
3691                                 u32 next;
3692
3693                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3694
3695                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3696                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3697                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3698                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3699
3700                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3701                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3702
3703                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3704
3705                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3706
3707                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3708                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3709
3710                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3711                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3712                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3713                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3714
3715                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3716                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3717
3718                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3719                                 qp = next;
3720                         }
3721                 }
3722         } else {
3723                 free_irq(pf->pdev->irq, pf);
3724
3725                 val = rd32(hw, I40E_PFINT_LNKLST0);
3726                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3727                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3728                 val |= I40E_QUEUE_END_OF_LIST
3729                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3730                 wr32(hw, I40E_PFINT_LNKLST0, val);
3731
3732                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3733                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3734                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3735                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3736                          I40E_QINT_RQCTL_INTEVENT_MASK);
3737
3738                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3739                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3740
3741                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3742
3743                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3744
3745                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3746                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3747                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3748                          I40E_QINT_TQCTL_INTEVENT_MASK);
3749
3750                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3751                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3752
3753                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3754         }
3755 }
3756
3757 /**
3758  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3759  * @vsi: the VSI being configured
3760  * @v_idx: Index of vector to be freed
3761  *
3762  * This function frees the memory allocated to the q_vector.  In addition if
3763  * NAPI is enabled it will delete any references to the NAPI struct prior
3764  * to freeing the q_vector.
3765  **/
3766 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3767 {
3768         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3769         struct i40e_ring *ring;
3770
3771         if (!q_vector)
3772                 return;
3773
3774         /* disassociate q_vector from rings */
3775         i40e_for_each_ring(ring, q_vector->tx)
3776                 ring->q_vector = NULL;
3777
3778         i40e_for_each_ring(ring, q_vector->rx)
3779                 ring->q_vector = NULL;
3780
3781         /* only VSI w/ an associated netdev is set up w/ NAPI */
3782         if (vsi->netdev)
3783                 netif_napi_del(&q_vector->napi);
3784
3785         vsi->q_vectors[v_idx] = NULL;
3786
3787         kfree_rcu(q_vector, rcu);
3788 }
3789
3790 /**
3791  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3792  * @vsi: the VSI being un-configured
3793  *
3794  * This frees the memory allocated to the q_vectors and
3795  * deletes references to the NAPI struct.
3796  **/
3797 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3798 {
3799         int v_idx;
3800
3801         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3802                 i40e_free_q_vector(vsi, v_idx);
3803 }
3804
3805 /**
3806  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3807  * @pf: board private structure
3808  **/
3809 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3810 {
3811         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3812         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3813                 pci_disable_msix(pf->pdev);
3814                 kfree(pf->msix_entries);
3815                 pf->msix_entries = NULL;
3816         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3817                 pci_disable_msi(pf->pdev);
3818         }
3819         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3820 }
3821
3822 /**
3823  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3824  * @pf: board private structure
3825  *
3826  * We go through and clear interrupt specific resources and reset the structure
3827  * to pre-load conditions
3828  **/
3829 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3830 {
3831         int i;
3832
3833         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3834         for (i = 0; i < pf->num_alloc_vsi; i++)
3835                 if (pf->vsi[i])
3836                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3837         i40e_reset_interrupt_capability(pf);
3838 }
3839
3840 /**
3841  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3842  * @vsi: the VSI being configured
3843  **/
3844 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3845 {
3846         int q_idx;
3847
3848         if (!vsi->netdev)
3849                 return;
3850
3851         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3852                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3853 }
3854
3855 /**
3856  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3857  * @vsi: the VSI being configured
3858  **/
3859 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3860 {
3861         int q_idx;
3862
3863         if (!vsi->netdev)
3864                 return;
3865
3866         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3867                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3868 }
3869
3870 /**
3871  * i40e_vsi_close - Shut down a VSI
3872  * @vsi: the vsi to be quelled
3873  **/
3874 static void i40e_vsi_close(struct i40e_vsi *vsi)
3875 {
3876         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3877                 i40e_down(vsi);
3878         i40e_vsi_free_irq(vsi);
3879         i40e_vsi_free_tx_resources(vsi);
3880         i40e_vsi_free_rx_resources(vsi);
3881 }
3882
3883 /**
3884  * i40e_quiesce_vsi - Pause a given VSI
3885  * @vsi: the VSI being paused
3886  **/
3887 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3888 {
3889         if (test_bit(__I40E_DOWN, &vsi->state))
3890                 return;
3891
3892         /* No need to disable FCoE VSI when Tx suspended */
3893         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
3894             vsi->type == I40E_VSI_FCOE) {
3895                 dev_dbg(&vsi->back->pdev->dev,
3896                         "%s: VSI seid %d skipping FCoE VSI disable\n",
3897                          __func__, vsi->seid);
3898                 return;
3899         }
3900
3901         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3902         if (vsi->netdev && netif_running(vsi->netdev)) {
3903                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3904         } else {
3905                 i40e_vsi_close(vsi);
3906         }
3907 }
3908
3909 /**
3910  * i40e_unquiesce_vsi - Resume a given VSI
3911  * @vsi: the VSI being resumed
3912  **/
3913 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3914 {
3915         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3916                 return;
3917
3918         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3919         if (vsi->netdev && netif_running(vsi->netdev))
3920                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3921         else
3922                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
3923 }
3924
3925 /**
3926  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3927  * @pf: the PF
3928  **/
3929 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3930 {
3931         int v;
3932
3933         for (v = 0; v < pf->num_alloc_vsi; v++) {
3934                 if (pf->vsi[v])
3935                         i40e_quiesce_vsi(pf->vsi[v]);
3936         }
3937 }
3938
3939 /**
3940  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3941  * @pf: the PF
3942  **/
3943 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3944 {
3945         int v;
3946
3947         for (v = 0; v < pf->num_alloc_vsi; v++) {
3948                 if (pf->vsi[v])
3949                         i40e_unquiesce_vsi(pf->vsi[v]);
3950         }
3951 }
3952
3953 #ifdef CONFIG_I40E_DCB
3954 /**
3955  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
3956  * @vsi: the VSI being configured
3957  *
3958  * This function waits for the given VSI's Tx queues to be disabled.
3959  **/
3960 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
3961 {
3962         struct i40e_pf *pf = vsi->back;
3963         int i, pf_q, ret;
3964
3965         pf_q = vsi->base_queue;
3966         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3967                 /* Check and wait for the disable status of the queue */
3968                 ret = i40e_pf_txq_wait(pf, pf_q, false);
3969                 if (ret) {
3970                         dev_info(&pf->pdev->dev,
3971                                  "%s: VSI seid %d Tx ring %d disable timeout\n",
3972                                  __func__, vsi->seid, pf_q);
3973                         return ret;
3974                 }
3975         }
3976
3977         return 0;
3978 }
3979
3980 /**
3981  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
3982  * @pf: the PF
3983  *
3984  * This function waits for the Tx queues to be in disabled state for all the
3985  * VSIs that are managed by this PF.
3986  **/
3987 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
3988 {
3989         int v, ret = 0;
3990
3991         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3992                 /* No need to wait for FCoE VSI queues */
3993                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
3994                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
3995                         if (ret)
3996                                 break;
3997                 }
3998         }
3999
4000         return ret;
4001 }
4002
4003 #endif
4004 /**
4005  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4006  * @pf: pointer to pf
4007  *
4008  * Get TC map for ISCSI PF type that will include iSCSI TC
4009  * and LAN TC.
4010  **/
4011 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4012 {
4013         struct i40e_dcb_app_priority_table app;
4014         struct i40e_hw *hw = &pf->hw;
4015         u8 enabled_tc = 1; /* TC0 is always enabled */
4016         u8 tc, i;
4017         /* Get the iSCSI APP TLV */
4018         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4019
4020         for (i = 0; i < dcbcfg->numapps; i++) {
4021                 app = dcbcfg->app[i];
4022                 if (app.selector == I40E_APP_SEL_TCPIP &&
4023                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4024                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4025                         enabled_tc |= (1 << tc);
4026                         break;
4027                 }
4028         }
4029
4030         return enabled_tc;
4031 }
4032
4033 /**
4034  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4035  * @dcbcfg: the corresponding DCBx configuration structure
4036  *
4037  * Return the number of TCs from given DCBx configuration
4038  **/
4039 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4040 {
4041         u8 num_tc = 0;
4042         int i;
4043
4044         /* Scan the ETS Config Priority Table to find
4045          * traffic class enabled for a given priority
4046          * and use the traffic class index to get the
4047          * number of traffic classes enabled
4048          */
4049         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4050                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4051                         num_tc = dcbcfg->etscfg.prioritytable[i];
4052         }
4053
4054         /* Traffic class index starts from zero so
4055          * increment to return the actual count
4056          */
4057         return num_tc + 1;
4058 }
4059
4060 /**
4061  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4062  * @dcbcfg: the corresponding DCBx configuration structure
4063  *
4064  * Query the current DCB configuration and return the number of
4065  * traffic classes enabled from the given DCBX config
4066  **/
4067 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4068 {
4069         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4070         u8 enabled_tc = 1;
4071         u8 i;
4072
4073         for (i = 0; i < num_tc; i++)
4074                 enabled_tc |= 1 << i;
4075
4076         return enabled_tc;
4077 }
4078
4079 /**
4080  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4081  * @pf: PF being queried
4082  *
4083  * Return number of traffic classes enabled for the given PF
4084  **/
4085 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4086 {
4087         struct i40e_hw *hw = &pf->hw;
4088         u8 i, enabled_tc;
4089         u8 num_tc = 0;
4090         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4091
4092         /* If DCB is not enabled then always in single TC */
4093         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4094                 return 1;
4095
4096         /* SFP mode will be enabled for all TCs on port */
4097         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4098                 return i40e_dcb_get_num_tc(dcbcfg);
4099
4100         /* MFP mode return count of enabled TCs for this PF */
4101         if (pf->hw.func_caps.iscsi)
4102                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4103         else
4104                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4105
4106         /* At least have TC0 */
4107         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4108         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4109                 if (enabled_tc & (1 << i))
4110                         num_tc++;
4111         }
4112         return num_tc;
4113 }
4114
4115 /**
4116  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4117  * @pf: PF being queried
4118  *
4119  * Return a bitmap for first enabled traffic class for this PF.
4120  **/
4121 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4122 {
4123         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4124         u8 i = 0;
4125
4126         if (!enabled_tc)
4127                 return 0x1; /* TC0 */
4128
4129         /* Find the first enabled TC */
4130         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4131                 if (enabled_tc & (1 << i))
4132                         break;
4133         }
4134
4135         return 1 << i;
4136 }
4137
4138 /**
4139  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4140  * @pf: PF being queried
4141  *
4142  * Return a bitmap for enabled traffic classes for this PF.
4143  **/
4144 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4145 {
4146         /* If DCB is not enabled for this PF then just return default TC */
4147         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4148                 return i40e_pf_get_default_tc(pf);
4149
4150         /* SFP mode we want PF to be enabled for all TCs */
4151         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4152                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4153
4154         /* MPF enabled and iSCSI PF type */
4155         if (pf->hw.func_caps.iscsi)
4156                 return i40e_get_iscsi_tc_map(pf);
4157         else
4158                 return pf->hw.func_caps.enabled_tcmap;
4159 }
4160
4161 /**
4162  * i40e_vsi_get_bw_info - Query VSI BW Information
4163  * @vsi: the VSI being queried
4164  *
4165  * Returns 0 on success, negative value on failure
4166  **/
4167 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4168 {
4169         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4170         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4171         struct i40e_pf *pf = vsi->back;
4172         struct i40e_hw *hw = &pf->hw;
4173         i40e_status aq_ret;
4174         u32 tc_bw_max;
4175         int i;
4176
4177         /* Get the VSI level BW configuration */
4178         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4179         if (aq_ret) {
4180                 dev_info(&pf->pdev->dev,
4181                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
4182                          aq_ret, pf->hw.aq.asq_last_status);
4183                 return -EINVAL;
4184         }
4185
4186         /* Get the VSI level BW configuration per TC */
4187         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4188                                                   NULL);
4189         if (aq_ret) {
4190                 dev_info(&pf->pdev->dev,
4191                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
4192                          aq_ret, pf->hw.aq.asq_last_status);
4193                 return -EINVAL;
4194         }
4195
4196         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4197                 dev_info(&pf->pdev->dev,
4198                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4199                          bw_config.tc_valid_bits,
4200                          bw_ets_config.tc_valid_bits);
4201                 /* Still continuing */
4202         }
4203
4204         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4205         vsi->bw_max_quanta = bw_config.max_bw;
4206         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4207                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4208         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4209                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4210                 vsi->bw_ets_limit_credits[i] =
4211                                         le16_to_cpu(bw_ets_config.credits[i]);
4212                 /* 3 bits out of 4 for each TC */
4213                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4214         }
4215
4216         return 0;
4217 }
4218
4219 /**
4220  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4221  * @vsi: the VSI being configured
4222  * @enabled_tc: TC bitmap
4223  * @bw_credits: BW shared credits per TC
4224  *
4225  * Returns 0 on success, negative value on failure
4226  **/
4227 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4228                                        u8 *bw_share)
4229 {
4230         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4231         i40e_status aq_ret;
4232         int i;
4233
4234         bw_data.tc_valid_bits = enabled_tc;
4235         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4236                 bw_data.tc_bw_credits[i] = bw_share[i];
4237
4238         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4239                                           NULL);
4240         if (aq_ret) {
4241                 dev_info(&vsi->back->pdev->dev,
4242                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4243                          vsi->back->hw.aq.asq_last_status);
4244                 return -EINVAL;
4245         }
4246
4247         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4248                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4249
4250         return 0;
4251 }
4252
4253 /**
4254  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4255  * @vsi: the VSI being configured
4256  * @enabled_tc: TC map to be enabled
4257  *
4258  **/
4259 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4260 {
4261         struct net_device *netdev = vsi->netdev;
4262         struct i40e_pf *pf = vsi->back;
4263         struct i40e_hw *hw = &pf->hw;
4264         u8 netdev_tc = 0;
4265         int i;
4266         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4267
4268         if (!netdev)
4269                 return;
4270
4271         if (!enabled_tc) {
4272                 netdev_reset_tc(netdev);
4273                 return;
4274         }
4275
4276         /* Set up actual enabled TCs on the VSI */
4277         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4278                 return;
4279
4280         /* set per TC queues for the VSI */
4281         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4282                 /* Only set TC queues for enabled tcs
4283                  *
4284                  * e.g. For a VSI that has TC0 and TC3 enabled the
4285                  * enabled_tc bitmap would be 0x00001001; the driver
4286                  * will set the numtc for netdev as 2 that will be
4287                  * referenced by the netdev layer as TC 0 and 1.
4288                  */
4289                 if (vsi->tc_config.enabled_tc & (1 << i))
4290                         netdev_set_tc_queue(netdev,
4291                                         vsi->tc_config.tc_info[i].netdev_tc,
4292                                         vsi->tc_config.tc_info[i].qcount,
4293                                         vsi->tc_config.tc_info[i].qoffset);
4294         }
4295
4296         /* Assign UP2TC map for the VSI */
4297         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4298                 /* Get the actual TC# for the UP */
4299                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4300                 /* Get the mapped netdev TC# for the UP */
4301                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4302                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4303         }
4304 }
4305
4306 /**
4307  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4308  * @vsi: the VSI being configured
4309  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4310  **/
4311 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4312                                       struct i40e_vsi_context *ctxt)
4313 {
4314         /* copy just the sections touched not the entire info
4315          * since not all sections are valid as returned by
4316          * update vsi params
4317          */
4318         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4319         memcpy(&vsi->info.queue_mapping,
4320                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4321         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4322                sizeof(vsi->info.tc_mapping));
4323 }
4324
4325 /**
4326  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4327  * @vsi: VSI to be configured
4328  * @enabled_tc: TC bitmap
4329  *
4330  * This configures a particular VSI for TCs that are mapped to the
4331  * given TC bitmap. It uses default bandwidth share for TCs across
4332  * VSIs to configure TC for a particular VSI.
4333  *
4334  * NOTE:
4335  * It is expected that the VSI queues have been quisced before calling
4336  * this function.
4337  **/
4338 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4339 {
4340         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4341         struct i40e_vsi_context ctxt;
4342         int ret = 0;
4343         int i;
4344
4345         /* Check if enabled_tc is same as existing or new TCs */
4346         if (vsi->tc_config.enabled_tc == enabled_tc)
4347                 return ret;
4348
4349         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4350         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4351                 if (enabled_tc & (1 << i))
4352                         bw_share[i] = 1;
4353         }
4354
4355         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4356         if (ret) {
4357                 dev_info(&vsi->back->pdev->dev,
4358                          "Failed configuring TC map %d for VSI %d\n",
4359                          enabled_tc, vsi->seid);
4360                 goto out;
4361         }
4362
4363         /* Update Queue Pairs Mapping for currently enabled UPs */
4364         ctxt.seid = vsi->seid;
4365         ctxt.pf_num = vsi->back->hw.pf_id;
4366         ctxt.vf_num = 0;
4367         ctxt.uplink_seid = vsi->uplink_seid;
4368         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
4369         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4370
4371         /* Update the VSI after updating the VSI queue-mapping information */
4372         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4373         if (ret) {
4374                 dev_info(&vsi->back->pdev->dev,
4375                          "update vsi failed, aq_err=%d\n",
4376                          vsi->back->hw.aq.asq_last_status);
4377                 goto out;
4378         }
4379         /* update the local VSI info with updated queue map */
4380         i40e_vsi_update_queue_map(vsi, &ctxt);
4381         vsi->info.valid_sections = 0;
4382
4383         /* Update current VSI BW information */
4384         ret = i40e_vsi_get_bw_info(vsi);
4385         if (ret) {
4386                 dev_info(&vsi->back->pdev->dev,
4387                          "Failed updating vsi bw info, aq_err=%d\n",
4388                          vsi->back->hw.aq.asq_last_status);
4389                 goto out;
4390         }
4391
4392         /* Update the netdev TC setup */
4393         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4394 out:
4395         return ret;
4396 }
4397
4398 /**
4399  * i40e_veb_config_tc - Configure TCs for given VEB
4400  * @veb: given VEB
4401  * @enabled_tc: TC bitmap
4402  *
4403  * Configures given TC bitmap for VEB (switching) element
4404  **/
4405 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4406 {
4407         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4408         struct i40e_pf *pf = veb->pf;
4409         int ret = 0;
4410         int i;
4411
4412         /* No TCs or already enabled TCs just return */
4413         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4414                 return ret;
4415
4416         bw_data.tc_valid_bits = enabled_tc;
4417         /* bw_data.absolute_credits is not set (relative) */
4418
4419         /* Enable ETS TCs with equal BW Share for now */
4420         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4421                 if (enabled_tc & (1 << i))
4422                         bw_data.tc_bw_share_credits[i] = 1;
4423         }
4424
4425         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4426                                                    &bw_data, NULL);
4427         if (ret) {
4428                 dev_info(&pf->pdev->dev,
4429                          "veb bw config failed, aq_err=%d\n",
4430                          pf->hw.aq.asq_last_status);
4431                 goto out;
4432         }
4433
4434         /* Update the BW information */
4435         ret = i40e_veb_get_bw_info(veb);
4436         if (ret) {
4437                 dev_info(&pf->pdev->dev,
4438                          "Failed getting veb bw config, aq_err=%d\n",
4439                          pf->hw.aq.asq_last_status);
4440         }
4441
4442 out:
4443         return ret;
4444 }
4445
4446 #ifdef CONFIG_I40E_DCB
4447 /**
4448  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4449  * @pf: PF struct
4450  *
4451  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4452  * the caller would've quiesce all the VSIs before calling
4453  * this function
4454  **/
4455 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4456 {
4457         u8 tc_map = 0;
4458         int ret;
4459         u8 v;
4460
4461         /* Enable the TCs available on PF to all VEBs */
4462         tc_map = i40e_pf_get_tc_map(pf);
4463         for (v = 0; v < I40E_MAX_VEB; v++) {
4464                 if (!pf->veb[v])
4465                         continue;
4466                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4467                 if (ret) {
4468                         dev_info(&pf->pdev->dev,
4469                                  "Failed configuring TC for VEB seid=%d\n",
4470                                  pf->veb[v]->seid);
4471                         /* Will try to configure as many components */
4472                 }
4473         }
4474
4475         /* Update each VSI */
4476         for (v = 0; v < pf->num_alloc_vsi; v++) {
4477                 if (!pf->vsi[v])
4478                         continue;
4479
4480                 /* - Enable all TCs for the LAN VSI
4481 #ifdef I40E_FCOE
4482                  * - For FCoE VSI only enable the TC configured
4483                  *   as per the APP TLV
4484 #endif
4485                  * - For all others keep them at TC0 for now
4486                  */
4487                 if (v == pf->lan_vsi)
4488                         tc_map = i40e_pf_get_tc_map(pf);
4489                 else
4490                         tc_map = i40e_pf_get_default_tc(pf);
4491 #ifdef I40E_FCOE
4492                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4493                         tc_map = i40e_get_fcoe_tc_map(pf);
4494 #endif /* #ifdef I40E_FCOE */
4495
4496                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4497                 if (ret) {
4498                         dev_info(&pf->pdev->dev,
4499                                  "Failed configuring TC for VSI seid=%d\n",
4500                                  pf->vsi[v]->seid);
4501                         /* Will try to configure as many components */
4502                 } else {
4503                         /* Re-configure VSI vectors based on updated TC map */
4504                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4505                         if (pf->vsi[v]->netdev)
4506                                 i40e_dcbnl_set_all(pf->vsi[v]);
4507                 }
4508         }
4509 }
4510
4511 /**
4512  * i40e_resume_port_tx - Resume port Tx
4513  * @pf: PF struct
4514  *
4515  * Resume a port's Tx and issue a PF reset in case of failure to
4516  * resume.
4517  **/
4518 static int i40e_resume_port_tx(struct i40e_pf *pf)
4519 {
4520         struct i40e_hw *hw = &pf->hw;
4521         int ret;
4522
4523         ret = i40e_aq_resume_port_tx(hw, NULL);
4524         if (ret) {
4525                 dev_info(&pf->pdev->dev,
4526                          "AQ command Resume Port Tx failed = %d\n",
4527                           pf->hw.aq.asq_last_status);
4528                 /* Schedule PF reset to recover */
4529                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4530                 i40e_service_event_schedule(pf);
4531         }
4532
4533         return ret;
4534 }
4535
4536 /**
4537  * i40e_init_pf_dcb - Initialize DCB configuration
4538  * @pf: PF being configured
4539  *
4540  * Query the current DCB configuration and cache it
4541  * in the hardware structure
4542  **/
4543 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4544 {
4545         struct i40e_hw *hw = &pf->hw;
4546         int err = 0;
4547
4548         /* Get the initial DCB configuration */
4549         err = i40e_init_dcb(hw);
4550         if (!err) {
4551                 /* Device/Function is not DCBX capable */
4552                 if ((!hw->func_caps.dcb) ||
4553                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4554                         dev_info(&pf->pdev->dev,
4555                                  "DCBX offload is not supported or is disabled for this PF.\n");
4556
4557                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4558                                 goto out;
4559
4560                 } else {
4561                         /* When status is not DISABLED then DCBX in FW */
4562                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4563                                        DCB_CAP_DCBX_VER_IEEE;
4564
4565                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4566                         /* Enable DCB tagging only when more than one TC */
4567                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4568                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4569                         dev_dbg(&pf->pdev->dev,
4570                                 "DCBX offload is supported for this PF.\n");
4571                 }
4572         } else {
4573                 dev_info(&pf->pdev->dev,
4574                          "AQ Querying DCB configuration failed: aq_err %d\n",
4575                          pf->hw.aq.asq_last_status);
4576         }
4577
4578 out:
4579         return err;
4580 }
4581 #endif /* CONFIG_I40E_DCB */
4582 #define SPEED_SIZE 14
4583 #define FC_SIZE 8
4584 /**
4585  * i40e_print_link_message - print link up or down
4586  * @vsi: the VSI for which link needs a message
4587  */
4588 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4589 {
4590         char speed[SPEED_SIZE] = "Unknown";
4591         char fc[FC_SIZE] = "RX/TX";
4592
4593         if (!isup) {
4594                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4595                 return;
4596         }
4597
4598         /* Warn user if link speed on NPAR enabled partition is not at
4599          * least 10GB
4600          */
4601         if (vsi->back->hw.func_caps.npar_enable &&
4602             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4603              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4604                 netdev_warn(vsi->netdev,
4605                             "The partition detected link speed that is less than 10Gbps\n");
4606
4607         switch (vsi->back->hw.phy.link_info.link_speed) {
4608         case I40E_LINK_SPEED_40GB:
4609                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4610                 break;
4611         case I40E_LINK_SPEED_10GB:
4612                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4613                 break;
4614         case I40E_LINK_SPEED_1GB:
4615                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4616                 break;
4617         case I40E_LINK_SPEED_100MB:
4618                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4619                 break;
4620         default:
4621                 break;
4622         }
4623
4624         switch (vsi->back->hw.fc.current_mode) {
4625         case I40E_FC_FULL:
4626                 strlcpy(fc, "RX/TX", FC_SIZE);
4627                 break;
4628         case I40E_FC_TX_PAUSE:
4629                 strlcpy(fc, "TX", FC_SIZE);
4630                 break;
4631         case I40E_FC_RX_PAUSE:
4632                 strlcpy(fc, "RX", FC_SIZE);
4633                 break;
4634         default:
4635                 strlcpy(fc, "None", FC_SIZE);
4636                 break;
4637         }
4638
4639         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4640                     speed, fc);
4641 }
4642
4643 /**
4644  * i40e_up_complete - Finish the last steps of bringing up a connection
4645  * @vsi: the VSI being configured
4646  **/
4647 static int i40e_up_complete(struct i40e_vsi *vsi)
4648 {
4649         struct i40e_pf *pf = vsi->back;
4650         int err;
4651
4652         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4653                 i40e_vsi_configure_msix(vsi);
4654         else
4655                 i40e_configure_msi_and_legacy(vsi);
4656
4657         /* start rings */
4658         err = i40e_vsi_control_rings(vsi, true);
4659         if (err)
4660                 return err;
4661
4662         clear_bit(__I40E_DOWN, &vsi->state);
4663         i40e_napi_enable_all(vsi);
4664         i40e_vsi_enable_irq(vsi);
4665
4666         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4667             (vsi->netdev)) {
4668                 i40e_print_link_message(vsi, true);
4669                 netif_tx_start_all_queues(vsi->netdev);
4670                 netif_carrier_on(vsi->netdev);
4671         } else if (vsi->netdev) {
4672                 i40e_print_link_message(vsi, false);
4673                 /* need to check for qualified module here*/
4674                 if ((pf->hw.phy.link_info.link_info &
4675                         I40E_AQ_MEDIA_AVAILABLE) &&
4676                     (!(pf->hw.phy.link_info.an_info &
4677                         I40E_AQ_QUALIFIED_MODULE)))
4678                         netdev_err(vsi->netdev,
4679                                    "the driver failed to link because an unqualified module was detected.");
4680         }
4681
4682         /* replay FDIR SB filters */
4683         if (vsi->type == I40E_VSI_FDIR) {
4684                 /* reset fd counters */
4685                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4686                 if (pf->fd_tcp_rule > 0) {
4687                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4688                         dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4689                         pf->fd_tcp_rule = 0;
4690                 }
4691                 i40e_fdir_filter_restore(vsi);
4692         }
4693         i40e_service_event_schedule(pf);
4694
4695         return 0;
4696 }
4697
4698 /**
4699  * i40e_vsi_reinit_locked - Reset the VSI
4700  * @vsi: the VSI being configured
4701  *
4702  * Rebuild the ring structs after some configuration
4703  * has changed, e.g. MTU size.
4704  **/
4705 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4706 {
4707         struct i40e_pf *pf = vsi->back;
4708
4709         WARN_ON(in_interrupt());
4710         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4711                 usleep_range(1000, 2000);
4712         i40e_down(vsi);
4713
4714         /* Give a VF some time to respond to the reset.  The
4715          * two second wait is based upon the watchdog cycle in
4716          * the VF driver.
4717          */
4718         if (vsi->type == I40E_VSI_SRIOV)
4719                 msleep(2000);
4720         i40e_up(vsi);
4721         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4722 }
4723
4724 /**
4725  * i40e_up - Bring the connection back up after being down
4726  * @vsi: the VSI being configured
4727  **/
4728 int i40e_up(struct i40e_vsi *vsi)
4729 {
4730         int err;
4731
4732         err = i40e_vsi_configure(vsi);
4733         if (!err)
4734                 err = i40e_up_complete(vsi);
4735
4736         return err;
4737 }
4738
4739 /**
4740  * i40e_down - Shutdown the connection processing
4741  * @vsi: the VSI being stopped
4742  **/
4743 void i40e_down(struct i40e_vsi *vsi)
4744 {
4745         int i;
4746
4747         /* It is assumed that the caller of this function
4748          * sets the vsi->state __I40E_DOWN bit.
4749          */
4750         if (vsi->netdev) {
4751                 netif_carrier_off(vsi->netdev);
4752                 netif_tx_disable(vsi->netdev);
4753         }
4754         i40e_vsi_disable_irq(vsi);
4755         i40e_vsi_control_rings(vsi, false);
4756         i40e_napi_disable_all(vsi);
4757
4758         for (i = 0; i < vsi->num_queue_pairs; i++) {
4759                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4760                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4761         }
4762 }
4763
4764 /**
4765  * i40e_setup_tc - configure multiple traffic classes
4766  * @netdev: net device to configure
4767  * @tc: number of traffic classes to enable
4768  **/
4769 #ifdef I40E_FCOE
4770 int i40e_setup_tc(struct net_device *netdev, u8 tc)
4771 #else
4772 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4773 #endif
4774 {
4775         struct i40e_netdev_priv *np = netdev_priv(netdev);
4776         struct i40e_vsi *vsi = np->vsi;
4777         struct i40e_pf *pf = vsi->back;
4778         u8 enabled_tc = 0;
4779         int ret = -EINVAL;
4780         int i;
4781
4782         /* Check if DCB enabled to continue */
4783         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4784                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4785                 goto exit;
4786         }
4787
4788         /* Check if MFP enabled */
4789         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4790                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4791                 goto exit;
4792         }
4793
4794         /* Check whether tc count is within enabled limit */
4795         if (tc > i40e_pf_get_num_tc(pf)) {
4796                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4797                 goto exit;
4798         }
4799
4800         /* Generate TC map for number of tc requested */
4801         for (i = 0; i < tc; i++)
4802                 enabled_tc |= (1 << i);
4803
4804         /* Requesting same TC configuration as already enabled */
4805         if (enabled_tc == vsi->tc_config.enabled_tc)
4806                 return 0;
4807
4808         /* Quiesce VSI queues */
4809         i40e_quiesce_vsi(vsi);
4810
4811         /* Configure VSI for enabled TCs */
4812         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4813         if (ret) {
4814                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4815                             vsi->seid);
4816                 goto exit;
4817         }
4818
4819         /* Unquiesce VSI */
4820         i40e_unquiesce_vsi(vsi);
4821
4822 exit:
4823         return ret;
4824 }
4825
4826 /**
4827  * i40e_open - Called when a network interface is made active
4828  * @netdev: network interface device structure
4829  *
4830  * The open entry point is called when a network interface is made
4831  * active by the system (IFF_UP).  At this point all resources needed
4832  * for transmit and receive operations are allocated, the interrupt
4833  * handler is registered with the OS, the netdev watchdog subtask is
4834  * enabled, and the stack is notified that the interface is ready.
4835  *
4836  * Returns 0 on success, negative value on failure
4837  **/
4838 #ifdef I40E_FCOE
4839 int i40e_open(struct net_device *netdev)
4840 #else
4841 static int i40e_open(struct net_device *netdev)
4842 #endif
4843 {
4844         struct i40e_netdev_priv *np = netdev_priv(netdev);
4845         struct i40e_vsi *vsi = np->vsi;
4846         struct i40e_pf *pf = vsi->back;
4847         int err;
4848
4849         /* disallow open during test or if eeprom is broken */
4850         if (test_bit(__I40E_TESTING, &pf->state) ||
4851             test_bit(__I40E_BAD_EEPROM, &pf->state))
4852                 return -EBUSY;
4853
4854         netif_carrier_off(netdev);
4855
4856         err = i40e_vsi_open(vsi);
4857         if (err)
4858                 return err;
4859
4860         /* configure global TSO hardware offload settings */
4861         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4862                                                        TCP_FLAG_FIN) >> 16);
4863         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4864                                                        TCP_FLAG_FIN |
4865                                                        TCP_FLAG_CWR) >> 16);
4866         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4867
4868 #ifdef CONFIG_I40E_VXLAN
4869         vxlan_get_rx_port(netdev);
4870 #endif
4871
4872         return 0;
4873 }
4874
4875 /**
4876  * i40e_vsi_open -
4877  * @vsi: the VSI to open
4878  *
4879  * Finish initialization of the VSI.
4880  *
4881  * Returns 0 on success, negative value on failure
4882  **/
4883 int i40e_vsi_open(struct i40e_vsi *vsi)
4884 {
4885         struct i40e_pf *pf = vsi->back;
4886         char int_name[I40E_INT_NAME_STR_LEN];
4887         int err;
4888
4889         /* allocate descriptors */
4890         err = i40e_vsi_setup_tx_resources(vsi);
4891         if (err)
4892                 goto err_setup_tx;
4893         err = i40e_vsi_setup_rx_resources(vsi);
4894         if (err)
4895                 goto err_setup_rx;
4896
4897         err = i40e_vsi_configure(vsi);
4898         if (err)
4899                 goto err_setup_rx;
4900
4901         if (vsi->netdev) {
4902                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4903                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4904                 err = i40e_vsi_request_irq(vsi, int_name);
4905                 if (err)
4906                         goto err_setup_rx;
4907
4908                 /* Notify the stack of the actual queue counts. */
4909                 err = netif_set_real_num_tx_queues(vsi->netdev,
4910                                                    vsi->num_queue_pairs);
4911                 if (err)
4912                         goto err_set_queues;
4913
4914                 err = netif_set_real_num_rx_queues(vsi->netdev,
4915                                                    vsi->num_queue_pairs);
4916                 if (err)
4917                         goto err_set_queues;
4918
4919         } else if (vsi->type == I40E_VSI_FDIR) {
4920                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
4921                          dev_driver_string(&pf->pdev->dev),
4922                          dev_name(&pf->pdev->dev));
4923                 err = i40e_vsi_request_irq(vsi, int_name);
4924
4925         } else {
4926                 err = -EINVAL;
4927                 goto err_setup_rx;
4928         }
4929
4930         err = i40e_up_complete(vsi);
4931         if (err)
4932                 goto err_up_complete;
4933
4934         return 0;
4935
4936 err_up_complete:
4937         i40e_down(vsi);
4938 err_set_queues:
4939         i40e_vsi_free_irq(vsi);
4940 err_setup_rx:
4941         i40e_vsi_free_rx_resources(vsi);
4942 err_setup_tx:
4943         i40e_vsi_free_tx_resources(vsi);
4944         if (vsi == pf->vsi[pf->lan_vsi])
4945                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4946
4947         return err;
4948 }
4949
4950 /**
4951  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4952  * @pf: Pointer to pf
4953  *
4954  * This function destroys the hlist where all the Flow Director
4955  * filters were saved.
4956  **/
4957 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4958 {
4959         struct i40e_fdir_filter *filter;
4960         struct hlist_node *node2;
4961
4962         hlist_for_each_entry_safe(filter, node2,
4963                                   &pf->fdir_filter_list, fdir_node) {
4964                 hlist_del(&filter->fdir_node);
4965                 kfree(filter);
4966         }
4967         pf->fdir_pf_active_filters = 0;
4968 }
4969
4970 /**
4971  * i40e_close - Disables a network interface
4972  * @netdev: network interface device structure
4973  *
4974  * The close entry point is called when an interface is de-activated
4975  * by the OS.  The hardware is still under the driver's control, but
4976  * this netdev interface is disabled.
4977  *
4978  * Returns 0, this is not allowed to fail
4979  **/
4980 #ifdef I40E_FCOE
4981 int i40e_close(struct net_device *netdev)
4982 #else
4983 static int i40e_close(struct net_device *netdev)
4984 #endif
4985 {
4986         struct i40e_netdev_priv *np = netdev_priv(netdev);
4987         struct i40e_vsi *vsi = np->vsi;
4988
4989         i40e_vsi_close(vsi);
4990
4991         return 0;
4992 }
4993
4994 /**
4995  * i40e_do_reset - Start a PF or Core Reset sequence
4996  * @pf: board private structure
4997  * @reset_flags: which reset is requested
4998  *
4999  * The essential difference in resets is that the PF Reset
5000  * doesn't clear the packet buffers, doesn't reset the PE
5001  * firmware, and doesn't bother the other PFs on the chip.
5002  **/
5003 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5004 {
5005         u32 val;
5006
5007         WARN_ON(in_interrupt());
5008
5009         if (i40e_check_asq_alive(&pf->hw))
5010                 i40e_vc_notify_reset(pf);
5011
5012         /* do the biggest reset indicated */
5013         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
5014
5015                 /* Request a Global Reset
5016                  *
5017                  * This will start the chip's countdown to the actual full
5018                  * chip reset event, and a warning interrupt to be sent
5019                  * to all PFs, including the requestor.  Our handler
5020                  * for the warning interrupt will deal with the shutdown
5021                  * and recovery of the switch setup.
5022                  */
5023                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5024                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5025                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5026                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5027
5028         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
5029
5030                 /* Request a Core Reset
5031                  *
5032                  * Same as Global Reset, except does *not* include the MAC/PHY
5033                  */
5034                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5035                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5036                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5037                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5038                 i40e_flush(&pf->hw);
5039
5040         } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
5041
5042                 /* Request a Firmware Reset
5043                  *
5044                  * Same as Global reset, plus restarting the
5045                  * embedded firmware engine.
5046                  */
5047                 /* enable EMP Reset */
5048                 val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
5049                 val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
5050                 wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
5051
5052                 /* force the reset */
5053                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5054                 val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
5055                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5056                 i40e_flush(&pf->hw);
5057
5058         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
5059
5060                 /* Request a PF Reset
5061                  *
5062                  * Resets only the PF-specific registers
5063                  *
5064                  * This goes directly to the tear-down and rebuild of
5065                  * the switch, since we need to do all the recovery as
5066                  * for the Core Reset.
5067                  */
5068                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5069                 i40e_handle_reset_warning(pf);
5070
5071         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
5072                 int v;
5073
5074                 /* Find the VSI(s) that requested a re-init */
5075                 dev_info(&pf->pdev->dev,
5076                          "VSI reinit requested\n");
5077                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5078                         struct i40e_vsi *vsi = pf->vsi[v];
5079                         if (vsi != NULL &&
5080                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5081                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5082                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5083                         }
5084                 }
5085
5086                 /* no further action needed, so return now */
5087                 return;
5088         } else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
5089                 int v;
5090
5091                 /* Find the VSI(s) that needs to be brought down */
5092                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5093                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5094                         struct i40e_vsi *vsi = pf->vsi[v];
5095                         if (vsi != NULL &&
5096                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5097                                 set_bit(__I40E_DOWN, &vsi->state);
5098                                 i40e_down(vsi);
5099                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5100                         }
5101                 }
5102
5103                 /* no further action needed, so return now */
5104                 return;
5105         } else {
5106                 dev_info(&pf->pdev->dev,
5107                          "bad reset request 0x%08x\n", reset_flags);
5108                 return;
5109         }
5110 }
5111
5112 #ifdef CONFIG_I40E_DCB
5113 /**
5114  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5115  * @pf: board private structure
5116  * @old_cfg: current DCB config
5117  * @new_cfg: new DCB config
5118  **/
5119 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5120                             struct i40e_dcbx_config *old_cfg,
5121                             struct i40e_dcbx_config *new_cfg)
5122 {
5123         bool need_reconfig = false;
5124
5125         /* Check if ETS configuration has changed */
5126         if (memcmp(&new_cfg->etscfg,
5127                    &old_cfg->etscfg,
5128                    sizeof(new_cfg->etscfg))) {
5129                 /* If Priority Table has changed reconfig is needed */
5130                 if (memcmp(&new_cfg->etscfg.prioritytable,
5131                            &old_cfg->etscfg.prioritytable,
5132                            sizeof(new_cfg->etscfg.prioritytable))) {
5133                         need_reconfig = true;
5134                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5135                 }
5136
5137                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5138                            &old_cfg->etscfg.tcbwtable,
5139                            sizeof(new_cfg->etscfg.tcbwtable)))
5140                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5141
5142                 if (memcmp(&new_cfg->etscfg.tsatable,
5143                            &old_cfg->etscfg.tsatable,
5144                            sizeof(new_cfg->etscfg.tsatable)))
5145                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5146         }
5147
5148         /* Check if PFC configuration has changed */
5149         if (memcmp(&new_cfg->pfc,
5150                    &old_cfg->pfc,
5151                    sizeof(new_cfg->pfc))) {
5152                 need_reconfig = true;
5153                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5154         }
5155
5156         /* Check if APP Table has changed */
5157         if (memcmp(&new_cfg->app,
5158                    &old_cfg->app,
5159                    sizeof(new_cfg->app))) {
5160                 need_reconfig = true;
5161                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5162         }
5163
5164         dev_dbg(&pf->pdev->dev, "%s: need_reconfig=%d\n", __func__,
5165                 need_reconfig);
5166         return need_reconfig;
5167 }
5168
5169 /**
5170  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5171  * @pf: board private structure
5172  * @e: event info posted on ARQ
5173  **/
5174 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5175                                   struct i40e_arq_event_info *e)
5176 {
5177         struct i40e_aqc_lldp_get_mib *mib =
5178                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5179         struct i40e_hw *hw = &pf->hw;
5180         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
5181         struct i40e_dcbx_config tmp_dcbx_cfg;
5182         bool need_reconfig = false;
5183         int ret = 0;
5184         u8 type;
5185
5186         /* Not DCB capable or capability disabled */
5187         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5188                 return ret;
5189
5190         /* Ignore if event is not for Nearest Bridge */
5191         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5192                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5193         dev_dbg(&pf->pdev->dev,
5194                 "%s: LLDP event mib bridge type 0x%x\n", __func__, type);
5195         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5196                 return ret;
5197
5198         /* Check MIB Type and return if event for Remote MIB update */
5199         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5200         dev_dbg(&pf->pdev->dev,
5201                 "%s: LLDP event mib type %s\n", __func__,
5202                 type ? "remote" : "local");
5203         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5204                 /* Update the remote cached instance and return */
5205                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5206                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5207                                 &hw->remote_dcbx_config);
5208                 goto exit;
5209         }
5210
5211         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
5212         /* Store the old configuration */
5213         tmp_dcbx_cfg = *dcbx_cfg;
5214
5215         /* Get updated DCBX data from firmware */
5216         ret = i40e_get_dcb_config(&pf->hw);
5217         if (ret) {
5218                 dev_info(&pf->pdev->dev, "Failed querying DCB configuration data from firmware.\n");
5219                 goto exit;
5220         }
5221
5222         /* No change detected in DCBX configs */
5223         if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
5224                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5225                 goto exit;
5226         }
5227
5228         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg, dcbx_cfg);
5229
5230         i40e_dcbnl_flush_apps(pf, dcbx_cfg);
5231
5232         if (!need_reconfig)
5233                 goto exit;
5234
5235         /* Enable DCB tagging only when more than one TC */
5236         if (i40e_dcb_get_num_tc(dcbx_cfg) > 1)
5237                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5238         else
5239                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5240
5241         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5242         /* Reconfiguration needed quiesce all VSIs */
5243         i40e_pf_quiesce_all_vsi(pf);
5244
5245         /* Changes in configuration update VEB/VSI */
5246         i40e_dcb_reconfigure(pf);
5247
5248         ret = i40e_resume_port_tx(pf);
5249
5250         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5251         /* In case of error no point in resuming VSIs */
5252         if (ret)
5253                 goto exit;
5254
5255         /* Wait for the PF's Tx queues to be disabled */
5256         ret = i40e_pf_wait_txq_disabled(pf);
5257         if (!ret)
5258                 i40e_pf_unquiesce_all_vsi(pf);
5259 exit:
5260         return ret;
5261 }
5262 #endif /* CONFIG_I40E_DCB */
5263
5264 /**
5265  * i40e_do_reset_safe - Protected reset path for userland calls.
5266  * @pf: board private structure
5267  * @reset_flags: which reset is requested
5268  *
5269  **/
5270 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5271 {
5272         rtnl_lock();
5273         i40e_do_reset(pf, reset_flags);
5274         rtnl_unlock();
5275 }
5276
5277 /**
5278  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5279  * @pf: board private structure
5280  * @e: event info posted on ARQ
5281  *
5282  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5283  * and VF queues
5284  **/
5285 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5286                                            struct i40e_arq_event_info *e)
5287 {
5288         struct i40e_aqc_lan_overflow *data =
5289                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5290         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5291         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5292         struct i40e_hw *hw = &pf->hw;
5293         struct i40e_vf *vf;
5294         u16 vf_id;
5295
5296         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5297                 queue, qtx_ctl);
5298
5299         /* Queue belongs to VF, find the VF and issue VF reset */
5300         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5301             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5302                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5303                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5304                 vf_id -= hw->func_caps.vf_base_id;
5305                 vf = &pf->vf[vf_id];
5306                 i40e_vc_notify_vf_reset(vf);
5307                 /* Allow VF to process pending reset notification */
5308                 msleep(20);
5309                 i40e_reset_vf(vf, false);
5310         }
5311 }
5312
5313 /**
5314  * i40e_service_event_complete - Finish up the service event
5315  * @pf: board private structure
5316  **/
5317 static void i40e_service_event_complete(struct i40e_pf *pf)
5318 {
5319         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5320
5321         /* flush memory to make sure state is correct before next watchog */
5322         smp_mb__before_atomic();
5323         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5324 }
5325
5326 /**
5327  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5328  * @pf: board private structure
5329  **/
5330 int i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5331 {
5332         int val, fcnt_prog;
5333
5334         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5335         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5336         return fcnt_prog;
5337 }
5338
5339 /**
5340  * i40e_get_current_fd_count - Get the count of total FD filters programmed
5341  * @pf: board private structure
5342  **/
5343 int i40e_get_current_fd_count(struct i40e_pf *pf)
5344 {
5345         int val, fcnt_prog;
5346         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5347         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5348                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5349                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5350         return fcnt_prog;
5351 }
5352
5353 /**
5354  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5355  * @pf: board private structure
5356  **/
5357 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5358 {
5359         u32 fcnt_prog, fcnt_avail;
5360
5361         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5362                 return;
5363
5364         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5365          * to re-enable
5366          */
5367         fcnt_prog = i40e_get_cur_guaranteed_fd_count(pf);
5368         fcnt_avail = pf->fdir_pf_filter_count;
5369         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5370             (pf->fd_add_err == 0) ||
5371             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5372                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5373                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5374                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5375                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5376                 }
5377         }
5378         /* Wait for some more space to be available to turn on ATR */
5379         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5380                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5381                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5382                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5383                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5384                 }
5385         }
5386 }
5387
5388 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5389 /**
5390  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5391  * @pf: board private structure
5392  **/
5393 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5394 {
5395         int flush_wait_retry = 50;
5396         int reg;
5397
5398         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5399                 return;
5400
5401         if (time_after(jiffies, pf->fd_flush_timestamp +
5402                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5403                 set_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5404                 pf->fd_flush_timestamp = jiffies;
5405                 pf->auto_disable_flags |= I40E_FLAG_FD_SB_ENABLED;
5406                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5407                 /* flush all filters */
5408                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5409                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5410                 i40e_flush(&pf->hw);
5411                 pf->fd_flush_cnt++;
5412                 pf->fd_add_err = 0;
5413                 do {
5414                         /* Check FD flush status every 5-6msec */
5415                         usleep_range(5000, 6000);
5416                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5417                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5418                                 break;
5419                 } while (flush_wait_retry--);
5420                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5421                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5422                 } else {
5423                         /* replay sideband filters */
5424                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5425
5426                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5427                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5428                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5429                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5430                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5431                 }
5432         }
5433 }
5434
5435 /**
5436  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5437  * @pf: board private structure
5438  **/
5439 int i40e_get_current_atr_cnt(struct i40e_pf *pf)
5440 {
5441         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5442 }
5443
5444 /* We can see up to 256 filter programming desc in transit if the filters are
5445  * being applied really fast; before we see the first
5446  * filter miss error on Rx queue 0. Accumulating enough error messages before
5447  * reacting will make sure we don't cause flush too often.
5448  */
5449 #define I40E_MAX_FD_PROGRAM_ERROR 256
5450
5451 /**
5452  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5453  * @pf: board private structure
5454  **/
5455 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5456 {
5457
5458         /* if interface is down do nothing */
5459         if (test_bit(__I40E_DOWN, &pf->state))
5460                 return;
5461
5462         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5463                 return;
5464
5465         if ((pf->fd_add_err >= I40E_MAX_FD_PROGRAM_ERROR) &&
5466             (i40e_get_current_atr_cnt(pf) >= pf->fd_atr_cnt) &&
5467             (i40e_get_current_atr_cnt(pf) > pf->fdir_pf_filter_count))
5468                 i40e_fdir_flush_and_replay(pf);
5469
5470         i40e_fdir_check_and_reenable(pf);
5471
5472 }
5473
5474 /**
5475  * i40e_vsi_link_event - notify VSI of a link event
5476  * @vsi: vsi to be notified
5477  * @link_up: link up or down
5478  **/
5479 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5480 {
5481         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5482                 return;
5483
5484         switch (vsi->type) {
5485         case I40E_VSI_MAIN:
5486 #ifdef I40E_FCOE
5487         case I40E_VSI_FCOE:
5488 #endif
5489                 if (!vsi->netdev || !vsi->netdev_registered)
5490                         break;
5491
5492                 if (link_up) {
5493                         netif_carrier_on(vsi->netdev);
5494                         netif_tx_wake_all_queues(vsi->netdev);
5495                 } else {
5496                         netif_carrier_off(vsi->netdev);
5497                         netif_tx_stop_all_queues(vsi->netdev);
5498                 }
5499                 break;
5500
5501         case I40E_VSI_SRIOV:
5502         case I40E_VSI_VMDQ2:
5503         case I40E_VSI_CTRL:
5504         case I40E_VSI_MIRROR:
5505         default:
5506                 /* there is no notification for other VSIs */
5507                 break;
5508         }
5509 }
5510
5511 /**
5512  * i40e_veb_link_event - notify elements on the veb of a link event
5513  * @veb: veb to be notified
5514  * @link_up: link up or down
5515  **/
5516 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5517 {
5518         struct i40e_pf *pf;
5519         int i;
5520
5521         if (!veb || !veb->pf)
5522                 return;
5523         pf = veb->pf;
5524
5525         /* depth first... */
5526         for (i = 0; i < I40E_MAX_VEB; i++)
5527                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5528                         i40e_veb_link_event(pf->veb[i], link_up);
5529
5530         /* ... now the local VSIs */
5531         for (i = 0; i < pf->num_alloc_vsi; i++)
5532                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5533                         i40e_vsi_link_event(pf->vsi[i], link_up);
5534 }
5535
5536 /**
5537  * i40e_link_event - Update netif_carrier status
5538  * @pf: board private structure
5539  **/
5540 static void i40e_link_event(struct i40e_pf *pf)
5541 {
5542         bool new_link, old_link;
5543         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5544         u8 new_link_speed, old_link_speed;
5545
5546         /* set this to force the get_link_status call to refresh state */
5547         pf->hw.phy.get_link_info = true;
5548
5549         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5550         new_link = i40e_get_link_status(&pf->hw);
5551         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5552         new_link_speed = pf->hw.phy.link_info.link_speed;
5553
5554         if (new_link == old_link &&
5555             new_link_speed == old_link_speed &&
5556             (test_bit(__I40E_DOWN, &vsi->state) ||
5557              new_link == netif_carrier_ok(vsi->netdev)))
5558                 return;
5559
5560         if (!test_bit(__I40E_DOWN, &vsi->state))
5561                 i40e_print_link_message(vsi, new_link);
5562
5563         /* Notify the base of the switch tree connected to
5564          * the link.  Floating VEBs are not notified.
5565          */
5566         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5567                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5568         else
5569                 i40e_vsi_link_event(vsi, new_link);
5570
5571         if (pf->vf)
5572                 i40e_vc_notify_link_state(pf);
5573
5574         if (pf->flags & I40E_FLAG_PTP)
5575                 i40e_ptp_set_increment(pf);
5576 }
5577
5578 /**
5579  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5580  * @pf: board private structure
5581  *
5582  * Set the per-queue flags to request a check for stuck queues in the irq
5583  * clean functions, then force interrupts to be sure the irq clean is called.
5584  **/
5585 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5586 {
5587         int i, v;
5588
5589         /* If we're down or resetting, just bail */
5590         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
5591                 return;
5592
5593         /* for each VSI/netdev
5594          *     for each Tx queue
5595          *         set the check flag
5596          *     for each q_vector
5597          *         force an interrupt
5598          */
5599         for (v = 0; v < pf->num_alloc_vsi; v++) {
5600                 struct i40e_vsi *vsi = pf->vsi[v];
5601                 int armed = 0;
5602
5603                 if (!pf->vsi[v] ||
5604                     test_bit(__I40E_DOWN, &vsi->state) ||
5605                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5606                         continue;
5607
5608                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5609                         set_check_for_tx_hang(vsi->tx_rings[i]);
5610                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5611                                      &vsi->tx_rings[i]->state))
5612                                 armed++;
5613                 }
5614
5615                 if (armed) {
5616                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5617                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5618                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5619                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
5620                                       I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
5621                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
5622                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
5623                         } else {
5624                                 u16 vec = vsi->base_vector - 1;
5625                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5626                                       I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK |
5627                                       I40E_PFINT_DYN_CTLN_ITR_INDX_MASK |
5628                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_ENA_MASK |
5629                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK);
5630                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5631                                         wr32(&vsi->back->hw,
5632                                              I40E_PFINT_DYN_CTLN(vec), val);
5633                         }
5634                         i40e_flush(&vsi->back->hw);
5635                 }
5636         }
5637 }
5638
5639 /**
5640  * i40e_watchdog_subtask - periodic checks not using event driven response
5641  * @pf: board private structure
5642  **/
5643 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5644 {
5645         int i;
5646
5647         /* if interface is down do nothing */
5648         if (test_bit(__I40E_DOWN, &pf->state) ||
5649             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5650                 return;
5651
5652         /* make sure we don't do these things too often */
5653         if (time_before(jiffies, (pf->service_timer_previous +
5654                                   pf->service_timer_period)))
5655                 return;
5656         pf->service_timer_previous = jiffies;
5657
5658         i40e_check_hang_subtask(pf);
5659         i40e_link_event(pf);
5660
5661         /* Update the stats for active netdevs so the network stack
5662          * can look at updated numbers whenever it cares to
5663          */
5664         for (i = 0; i < pf->num_alloc_vsi; i++)
5665                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5666                         i40e_update_stats(pf->vsi[i]);
5667
5668         /* Update the stats for the active switching components */
5669         for (i = 0; i < I40E_MAX_VEB; i++)
5670                 if (pf->veb[i])
5671                         i40e_update_veb_stats(pf->veb[i]);
5672
5673         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5674 }
5675
5676 /**
5677  * i40e_reset_subtask - Set up for resetting the device and driver
5678  * @pf: board private structure
5679  **/
5680 static void i40e_reset_subtask(struct i40e_pf *pf)
5681 {
5682         u32 reset_flags = 0;
5683
5684         rtnl_lock();
5685         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5686                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5687                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5688         }
5689         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5690                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5691                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5692         }
5693         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5694                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5695                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5696         }
5697         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5698                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5699                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5700         }
5701         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5702                 reset_flags |= (1 << __I40E_DOWN_REQUESTED);
5703                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5704         }
5705
5706         /* If there's a recovery already waiting, it takes
5707          * precedence before starting a new reset sequence.
5708          */
5709         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5710                 i40e_handle_reset_warning(pf);
5711                 goto unlock;
5712         }
5713
5714         /* If we're already down or resetting, just bail */
5715         if (reset_flags &&
5716             !test_bit(__I40E_DOWN, &pf->state) &&
5717             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5718                 i40e_do_reset(pf, reset_flags);
5719
5720 unlock:
5721         rtnl_unlock();
5722 }
5723
5724 /**
5725  * i40e_handle_link_event - Handle link event
5726  * @pf: board private structure
5727  * @e: event info posted on ARQ
5728  **/
5729 static void i40e_handle_link_event(struct i40e_pf *pf,
5730                                    struct i40e_arq_event_info *e)
5731 {
5732         struct i40e_hw *hw = &pf->hw;
5733         struct i40e_aqc_get_link_status *status =
5734                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5735         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
5736
5737         /* save off old link status information */
5738         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
5739                sizeof(pf->hw.phy.link_info_old));
5740
5741         /* Do a new status request to re-enable LSE reporting
5742          * and load new status information into the hw struct
5743          * This completely ignores any state information
5744          * in the ARQ event info, instead choosing to always
5745          * issue the AQ update link status command.
5746          */
5747         i40e_link_event(pf);
5748
5749         /* check for unqualified module, if link is down */
5750         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5751             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5752             (!(status->link_info & I40E_AQ_LINK_UP)))
5753                 dev_err(&pf->pdev->dev,
5754                         "The driver failed to link because an unqualified module was detected.\n");
5755 }
5756
5757 /**
5758  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5759  * @pf: board private structure
5760  **/
5761 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5762 {
5763         struct i40e_arq_event_info event;
5764         struct i40e_hw *hw = &pf->hw;
5765         u16 pending, i = 0;
5766         i40e_status ret;
5767         u16 opcode;
5768         u32 oldval;
5769         u32 val;
5770
5771         /* Do not run clean AQ when PF reset fails */
5772         if (test_bit(__I40E_RESET_FAILED, &pf->state))
5773                 return;
5774
5775         /* check for error indications */
5776         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5777         oldval = val;
5778         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5779                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5780                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5781         }
5782         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5783                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5784                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5785         }
5786         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5787                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5788                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5789         }
5790         if (oldval != val)
5791                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5792
5793         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5794         oldval = val;
5795         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5796                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5797                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5798         }
5799         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5800                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5801                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5802         }
5803         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5804                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5805                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5806         }
5807         if (oldval != val)
5808                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5809
5810         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
5811         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
5812         if (!event.msg_buf)
5813                 return;
5814
5815         do {
5816                 ret = i40e_clean_arq_element(hw, &event, &pending);
5817                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
5818                         break;
5819                 else if (ret) {
5820                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5821                         break;
5822                 }
5823
5824                 opcode = le16_to_cpu(event.desc.opcode);
5825                 switch (opcode) {
5826
5827                 case i40e_aqc_opc_get_link_status:
5828                         i40e_handle_link_event(pf, &event);
5829                         break;
5830                 case i40e_aqc_opc_send_msg_to_pf:
5831                         ret = i40e_vc_process_vf_msg(pf,
5832                                         le16_to_cpu(event.desc.retval),
5833                                         le32_to_cpu(event.desc.cookie_high),
5834                                         le32_to_cpu(event.desc.cookie_low),
5835                                         event.msg_buf,
5836                                         event.msg_len);
5837                         break;
5838                 case i40e_aqc_opc_lldp_update_mib:
5839                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5840 #ifdef CONFIG_I40E_DCB
5841                         rtnl_lock();
5842                         ret = i40e_handle_lldp_event(pf, &event);
5843                         rtnl_unlock();
5844 #endif /* CONFIG_I40E_DCB */
5845                         break;
5846                 case i40e_aqc_opc_event_lan_overflow:
5847                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5848                         i40e_handle_lan_overflow_event(pf, &event);
5849                         break;
5850                 case i40e_aqc_opc_send_msg_to_peer:
5851                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5852                         break;
5853                 default:
5854                         dev_info(&pf->pdev->dev,
5855                                  "ARQ Error: Unknown event 0x%04x received\n",
5856                                  opcode);
5857                         break;
5858                 }
5859         } while (pending && (i++ < pf->adminq_work_limit));
5860
5861         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5862         /* re-enable Admin queue interrupt cause */
5863         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5864         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5865         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5866         i40e_flush(hw);
5867
5868         kfree(event.msg_buf);
5869 }
5870
5871 /**
5872  * i40e_verify_eeprom - make sure eeprom is good to use
5873  * @pf: board private structure
5874  **/
5875 static void i40e_verify_eeprom(struct i40e_pf *pf)
5876 {
5877         int err;
5878
5879         err = i40e_diag_eeprom_test(&pf->hw);
5880         if (err) {
5881                 /* retry in case of garbage read */
5882                 err = i40e_diag_eeprom_test(&pf->hw);
5883                 if (err) {
5884                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5885                                  err);
5886                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5887                 }
5888         }
5889
5890         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5891                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5892                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5893         }
5894 }
5895
5896 /**
5897  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5898  * @veb: pointer to the VEB instance
5899  *
5900  * This is a recursive function that first builds the attached VSIs then
5901  * recurses in to build the next layer of VEB.  We track the connections
5902  * through our own index numbers because the seid's from the HW could
5903  * change across the reset.
5904  **/
5905 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5906 {
5907         struct i40e_vsi *ctl_vsi = NULL;
5908         struct i40e_pf *pf = veb->pf;
5909         int v, veb_idx;
5910         int ret;
5911
5912         /* build VSI that owns this VEB, temporarily attached to base VEB */
5913         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
5914                 if (pf->vsi[v] &&
5915                     pf->vsi[v]->veb_idx == veb->idx &&
5916                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5917                         ctl_vsi = pf->vsi[v];
5918                         break;
5919                 }
5920         }
5921         if (!ctl_vsi) {
5922                 dev_info(&pf->pdev->dev,
5923                          "missing owner VSI for veb_idx %d\n", veb->idx);
5924                 ret = -ENOENT;
5925                 goto end_reconstitute;
5926         }
5927         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5928                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5929         ret = i40e_add_vsi(ctl_vsi);
5930         if (ret) {
5931                 dev_info(&pf->pdev->dev,
5932                          "rebuild of owner VSI failed: %d\n", ret);
5933                 goto end_reconstitute;
5934         }
5935         i40e_vsi_reset_stats(ctl_vsi);
5936
5937         /* create the VEB in the switch and move the VSI onto the VEB */
5938         ret = i40e_add_veb(veb, ctl_vsi);
5939         if (ret)
5940                 goto end_reconstitute;
5941
5942         /* Enable LB mode for the main VSI now that it is on a VEB */
5943         i40e_enable_pf_switch_lb(pf);
5944
5945         /* create the remaining VSIs attached to this VEB */
5946         for (v = 0; v < pf->num_alloc_vsi; v++) {
5947                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5948                         continue;
5949
5950                 if (pf->vsi[v]->veb_idx == veb->idx) {
5951                         struct i40e_vsi *vsi = pf->vsi[v];
5952                         vsi->uplink_seid = veb->seid;
5953                         ret = i40e_add_vsi(vsi);
5954                         if (ret) {
5955                                 dev_info(&pf->pdev->dev,
5956                                          "rebuild of vsi_idx %d failed: %d\n",
5957                                          v, ret);
5958                                 goto end_reconstitute;
5959                         }
5960                         i40e_vsi_reset_stats(vsi);
5961                 }
5962         }
5963
5964         /* create any VEBs attached to this VEB - RECURSION */
5965         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5966                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5967                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5968                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5969                         if (ret)
5970                                 break;
5971                 }
5972         }
5973
5974 end_reconstitute:
5975         return ret;
5976 }
5977
5978 /**
5979  * i40e_get_capabilities - get info about the HW
5980  * @pf: the PF struct
5981  **/
5982 static int i40e_get_capabilities(struct i40e_pf *pf)
5983 {
5984         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5985         u16 data_size;
5986         int buf_len;
5987         int err;
5988
5989         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5990         do {
5991                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5992                 if (!cap_buf)
5993                         return -ENOMEM;
5994
5995                 /* this loads the data into the hw struct for us */
5996                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5997                                             &data_size,
5998                                             i40e_aqc_opc_list_func_capabilities,
5999                                             NULL);
6000                 /* data loaded, buffer no longer needed */
6001                 kfree(cap_buf);
6002
6003                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6004                         /* retry with a larger buffer */
6005                         buf_len = data_size;
6006                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6007                         dev_info(&pf->pdev->dev,
6008                                  "capability discovery failed: aq=%d\n",
6009                                  pf->hw.aq.asq_last_status);
6010                         return -ENODEV;
6011                 }
6012         } while (err);
6013
6014         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6015             (pf->hw.aq.fw_maj_ver < 2)) {
6016                 pf->hw.func_caps.num_msix_vectors++;
6017                 pf->hw.func_caps.num_msix_vectors_vf++;
6018         }
6019
6020         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6021                 dev_info(&pf->pdev->dev,
6022                          "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",
6023                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6024                          pf->hw.func_caps.num_msix_vectors,
6025                          pf->hw.func_caps.num_msix_vectors_vf,
6026                          pf->hw.func_caps.fd_filters_guaranteed,
6027                          pf->hw.func_caps.fd_filters_best_effort,
6028                          pf->hw.func_caps.num_tx_qp,
6029                          pf->hw.func_caps.num_vsis);
6030
6031 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6032                        + pf->hw.func_caps.num_vfs)
6033         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6034                 dev_info(&pf->pdev->dev,
6035                          "got num_vsis %d, setting num_vsis to %d\n",
6036                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6037                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6038         }
6039
6040         return 0;
6041 }
6042
6043 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6044
6045 /**
6046  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6047  * @pf: board private structure
6048  **/
6049 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6050 {
6051         struct i40e_vsi *vsi;
6052         int i;
6053
6054         /* quick workaround for an NVM issue that leaves a critical register
6055          * uninitialized
6056          */
6057         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6058                 static const u32 hkey[] = {
6059                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6060                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6061                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6062                         0x95b3a76d};
6063
6064                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6065                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6066         }
6067
6068         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6069                 return;
6070
6071         /* find existing VSI and see if it needs configuring */
6072         vsi = NULL;
6073         for (i = 0; i < pf->num_alloc_vsi; i++) {
6074                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6075                         vsi = pf->vsi[i];
6076                         break;
6077                 }
6078         }
6079
6080         /* create a new VSI if none exists */
6081         if (!vsi) {
6082                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6083                                      pf->vsi[pf->lan_vsi]->seid, 0);
6084                 if (!vsi) {
6085                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6086                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6087                         return;
6088                 }
6089         }
6090
6091         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6092 }
6093
6094 /**
6095  * i40e_fdir_teardown - release the Flow Director resources
6096  * @pf: board private structure
6097  **/
6098 static void i40e_fdir_teardown(struct i40e_pf *pf)
6099 {
6100         int i;
6101
6102         i40e_fdir_filter_exit(pf);
6103         for (i = 0; i < pf->num_alloc_vsi; i++) {
6104                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6105                         i40e_vsi_release(pf->vsi[i]);
6106                         break;
6107                 }
6108         }
6109 }
6110
6111 /**
6112  * i40e_prep_for_reset - prep for the core to reset
6113  * @pf: board private structure
6114  *
6115  * Close up the VFs and other things in prep for pf Reset.
6116   **/
6117 static void i40e_prep_for_reset(struct i40e_pf *pf)
6118 {
6119         struct i40e_hw *hw = &pf->hw;
6120         i40e_status ret = 0;
6121         u32 v;
6122
6123         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6124         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6125                 return;
6126
6127         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6128
6129         /* quiesce the VSIs and their queues that are not already DOWN */
6130         i40e_pf_quiesce_all_vsi(pf);
6131
6132         for (v = 0; v < pf->num_alloc_vsi; v++) {
6133                 if (pf->vsi[v])
6134                         pf->vsi[v]->seid = 0;
6135         }
6136
6137         i40e_shutdown_adminq(&pf->hw);
6138
6139         /* call shutdown HMC */
6140         if (hw->hmc.hmc_obj) {
6141                 ret = i40e_shutdown_lan_hmc(hw);
6142                 if (ret)
6143                         dev_warn(&pf->pdev->dev,
6144                                  "shutdown_lan_hmc failed: %d\n", ret);
6145         }
6146 }
6147
6148 /**
6149  * i40e_send_version - update firmware with driver version
6150  * @pf: PF struct
6151  */
6152 static void i40e_send_version(struct i40e_pf *pf)
6153 {
6154         struct i40e_driver_version dv;
6155
6156         dv.major_version = DRV_VERSION_MAJOR;
6157         dv.minor_version = DRV_VERSION_MINOR;
6158         dv.build_version = DRV_VERSION_BUILD;
6159         dv.subbuild_version = 0;
6160         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6161         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6162 }
6163
6164 /**
6165  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6166  * @pf: board private structure
6167  * @reinit: if the Main VSI needs to re-initialized.
6168  **/
6169 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6170 {
6171         struct i40e_hw *hw = &pf->hw;
6172         u8 set_fc_aq_fail = 0;
6173         i40e_status ret;
6174         u32 v;
6175
6176         /* Now we wait for GRST to settle out.
6177          * We don't have to delete the VEBs or VSIs from the hw switch
6178          * because the reset will make them disappear.
6179          */
6180         ret = i40e_pf_reset(hw);
6181         if (ret) {
6182                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6183                 set_bit(__I40E_RESET_FAILED, &pf->state);
6184                 goto clear_recovery;
6185         }
6186         pf->pfr_count++;
6187
6188         if (test_bit(__I40E_DOWN, &pf->state))
6189                 goto clear_recovery;
6190         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6191
6192         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6193         ret = i40e_init_adminq(&pf->hw);
6194         if (ret) {
6195                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
6196                 goto clear_recovery;
6197         }
6198
6199         /* re-verify the eeprom if we just had an EMP reset */
6200         if (test_bit(__I40E_EMP_RESET_REQUESTED, &pf->state)) {
6201                 clear_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
6202                 i40e_verify_eeprom(pf);
6203         }
6204
6205         i40e_clear_pxe_mode(hw);
6206         ret = i40e_get_capabilities(pf);
6207         if (ret) {
6208                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
6209                          ret);
6210                 goto end_core_reset;
6211         }
6212
6213         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6214                                 hw->func_caps.num_rx_qp,
6215                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6216         if (ret) {
6217                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6218                 goto end_core_reset;
6219         }
6220         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6221         if (ret) {
6222                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6223                 goto end_core_reset;
6224         }
6225
6226 #ifdef CONFIG_I40E_DCB
6227         ret = i40e_init_pf_dcb(pf);
6228         if (ret) {
6229                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6230                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6231                 /* Continue without DCB enabled */
6232         }
6233 #endif /* CONFIG_I40E_DCB */
6234 #ifdef I40E_FCOE
6235         ret = i40e_init_pf_fcoe(pf);
6236         if (ret)
6237                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6238
6239 #endif
6240         /* do basic switch setup */
6241         ret = i40e_setup_pf_switch(pf, reinit);
6242         if (ret)
6243                 goto end_core_reset;
6244
6245         /* driver is only interested in link up/down and module qualification
6246          * reports from firmware
6247          */
6248         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6249                                        I40E_AQ_EVENT_LINK_UPDOWN |
6250                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6251         if (ret)
6252                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", ret);
6253
6254         /* make sure our flow control settings are restored */
6255         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6256         if (ret)
6257                 dev_info(&pf->pdev->dev, "set fc fail, aq_err %d\n", ret);
6258
6259         /* Rebuild the VSIs and VEBs that existed before reset.
6260          * They are still in our local switch element arrays, so only
6261          * need to rebuild the switch model in the HW.
6262          *
6263          * If there were VEBs but the reconstitution failed, we'll try
6264          * try to recover minimal use by getting the basic PF VSI working.
6265          */
6266         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6267                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6268                 /* find the one VEB connected to the MAC, and find orphans */
6269                 for (v = 0; v < I40E_MAX_VEB; v++) {
6270                         if (!pf->veb[v])
6271                                 continue;
6272
6273                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6274                             pf->veb[v]->uplink_seid == 0) {
6275                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6276
6277                                 if (!ret)
6278                                         continue;
6279
6280                                 /* If Main VEB failed, we're in deep doodoo,
6281                                  * so give up rebuilding the switch and set up
6282                                  * for minimal rebuild of PF VSI.
6283                                  * If orphan failed, we'll report the error
6284                                  * but try to keep going.
6285                                  */
6286                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6287                                         dev_info(&pf->pdev->dev,
6288                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6289                                                  ret);
6290                                         pf->vsi[pf->lan_vsi]->uplink_seid
6291                                                                 = pf->mac_seid;
6292                                         break;
6293                                 } else if (pf->veb[v]->uplink_seid == 0) {
6294                                         dev_info(&pf->pdev->dev,
6295                                                  "rebuild of orphan VEB failed: %d\n",
6296                                                  ret);
6297                                 }
6298                         }
6299                 }
6300         }
6301
6302         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6303                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6304                 /* no VEB, so rebuild only the Main VSI */
6305                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6306                 if (ret) {
6307                         dev_info(&pf->pdev->dev,
6308                                  "rebuild of Main VSI failed: %d\n", ret);
6309                         goto end_core_reset;
6310                 }
6311         }
6312
6313         msleep(75);
6314         ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6315         if (ret) {
6316                 dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
6317                          pf->hw.aq.asq_last_status);
6318         }
6319
6320         /* reinit the misc interrupt */
6321         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6322                 ret = i40e_setup_misc_vector(pf);
6323
6324         /* restart the VSIs that were rebuilt and running before the reset */
6325         i40e_pf_unquiesce_all_vsi(pf);
6326
6327         if (pf->num_alloc_vfs) {
6328                 for (v = 0; v < pf->num_alloc_vfs; v++)
6329                         i40e_reset_vf(&pf->vf[v], true);
6330         }
6331
6332         /* tell the firmware that we're starting */
6333         i40e_send_version(pf);
6334
6335 end_core_reset:
6336         clear_bit(__I40E_RESET_FAILED, &pf->state);
6337 clear_recovery:
6338         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6339 }
6340
6341 /**
6342  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
6343  * @pf: board private structure
6344  *
6345  * Close up the VFs and other things in prep for a Core Reset,
6346  * then get ready to rebuild the world.
6347  **/
6348 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6349 {
6350         i40e_prep_for_reset(pf);
6351         i40e_reset_and_rebuild(pf, false);
6352 }
6353
6354 /**
6355  * i40e_handle_mdd_event
6356  * @pf: pointer to the pf structure
6357  *
6358  * Called from the MDD irq handler to identify possibly malicious vfs
6359  **/
6360 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6361 {
6362         struct i40e_hw *hw = &pf->hw;
6363         bool mdd_detected = false;
6364         bool pf_mdd_detected = false;
6365         struct i40e_vf *vf;
6366         u32 reg;
6367         int i;
6368
6369         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6370                 return;
6371
6372         /* find what triggered the MDD event */
6373         reg = rd32(hw, I40E_GL_MDET_TX);
6374         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6375                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6376                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6377                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6378                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6379                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6380                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6381                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6382                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6383                                 pf->hw.func_caps.base_queue;
6384                 if (netif_msg_tx_err(pf))
6385                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d pf number 0x%02x vf number 0x%02x\n",
6386                                  event, queue, pf_num, vf_num);
6387                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6388                 mdd_detected = true;
6389         }
6390         reg = rd32(hw, I40E_GL_MDET_RX);
6391         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6392                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6393                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6394                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6395                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6396                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6397                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6398                                 pf->hw.func_caps.base_queue;
6399                 if (netif_msg_rx_err(pf))
6400                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6401                                  event, queue, func);
6402                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6403                 mdd_detected = true;
6404         }
6405
6406         if (mdd_detected) {
6407                 reg = rd32(hw, I40E_PF_MDET_TX);
6408                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6409                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6410                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6411                         pf_mdd_detected = true;
6412                 }
6413                 reg = rd32(hw, I40E_PF_MDET_RX);
6414                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6415                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6416                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6417                         pf_mdd_detected = true;
6418                 }
6419                 /* Queue belongs to the PF, initiate a reset */
6420                 if (pf_mdd_detected) {
6421                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6422                         i40e_service_event_schedule(pf);
6423                 }
6424         }
6425
6426         /* see if one of the VFs needs its hand slapped */
6427         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6428                 vf = &(pf->vf[i]);
6429                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6430                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6431                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6432                         vf->num_mdd_events++;
6433                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6434                                  i);
6435                 }
6436
6437                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6438                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6439                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6440                         vf->num_mdd_events++;
6441                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6442                                  i);
6443                 }
6444
6445                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6446                         dev_info(&pf->pdev->dev,
6447                                  "Too many MDD events on VF %d, disabled\n", i);
6448                         dev_info(&pf->pdev->dev,
6449                                  "Use PF Control I/F to re-enable the VF\n");
6450                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6451                 }
6452         }
6453
6454         /* re-enable mdd interrupt cause */
6455         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6456         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6457         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6458         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6459         i40e_flush(hw);
6460 }
6461
6462 #ifdef CONFIG_I40E_VXLAN
6463 /**
6464  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6465  * @pf: board private structure
6466  **/
6467 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6468 {
6469         struct i40e_hw *hw = &pf->hw;
6470         i40e_status ret;
6471         u8 filter_index;
6472         __be16 port;
6473         int i;
6474
6475         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6476                 return;
6477
6478         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6479
6480         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6481                 if (pf->pending_vxlan_bitmap & (1 << i)) {
6482                         pf->pending_vxlan_bitmap &= ~(1 << i);
6483                         port = pf->vxlan_ports[i];
6484                         ret = port ?
6485                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
6486                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6487                                                      &filter_index, NULL)
6488                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
6489
6490                         if (ret) {
6491                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
6492                                          port ? "adding" : "deleting",
6493                                          ntohs(port), port ? i : i);
6494
6495                                 pf->vxlan_ports[i] = 0;
6496                         } else {
6497                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
6498                                          port ? "Added" : "Deleted",
6499                                          ntohs(port), port ? i : filter_index);
6500                         }
6501                 }
6502         }
6503 }
6504
6505 #endif
6506 /**
6507  * i40e_service_task - Run the driver's async subtasks
6508  * @work: pointer to work_struct containing our data
6509  **/
6510 static void i40e_service_task(struct work_struct *work)
6511 {
6512         struct i40e_pf *pf = container_of(work,
6513                                           struct i40e_pf,
6514                                           service_task);
6515         unsigned long start_time = jiffies;
6516
6517         /* don't bother with service tasks if a reset is in progress */
6518         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6519                 i40e_service_event_complete(pf);
6520                 return;
6521         }
6522
6523         i40e_reset_subtask(pf);
6524         i40e_handle_mdd_event(pf);
6525         i40e_vc_process_vflr_event(pf);
6526         i40e_watchdog_subtask(pf);
6527         i40e_fdir_reinit_subtask(pf);
6528         i40e_sync_filters_subtask(pf);
6529 #ifdef CONFIG_I40E_VXLAN
6530         i40e_sync_vxlan_filters_subtask(pf);
6531 #endif
6532         i40e_clean_adminq_subtask(pf);
6533
6534         i40e_service_event_complete(pf);
6535
6536         /* If the tasks have taken longer than one timer cycle or there
6537          * is more work to be done, reschedule the service task now
6538          * rather than wait for the timer to tick again.
6539          */
6540         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6541             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6542             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6543             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6544                 i40e_service_event_schedule(pf);
6545 }
6546
6547 /**
6548  * i40e_service_timer - timer callback
6549  * @data: pointer to PF struct
6550  **/
6551 static void i40e_service_timer(unsigned long data)
6552 {
6553         struct i40e_pf *pf = (struct i40e_pf *)data;
6554
6555         mod_timer(&pf->service_timer,
6556                   round_jiffies(jiffies + pf->service_timer_period));
6557         i40e_service_event_schedule(pf);
6558 }
6559
6560 /**
6561  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6562  * @vsi: the VSI being configured
6563  **/
6564 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6565 {
6566         struct i40e_pf *pf = vsi->back;
6567
6568         switch (vsi->type) {
6569         case I40E_VSI_MAIN:
6570                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6571                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6572                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6573                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6574                         vsi->num_q_vectors = pf->num_lan_msix;
6575                 else
6576                         vsi->num_q_vectors = 1;
6577
6578                 break;
6579
6580         case I40E_VSI_FDIR:
6581                 vsi->alloc_queue_pairs = 1;
6582                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6583                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6584                 vsi->num_q_vectors = 1;
6585                 break;
6586
6587         case I40E_VSI_VMDQ2:
6588                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6589                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6590                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6591                 vsi->num_q_vectors = pf->num_vmdq_msix;
6592                 break;
6593
6594         case I40E_VSI_SRIOV:
6595                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6596                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6597                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6598                 break;
6599
6600 #ifdef I40E_FCOE
6601         case I40E_VSI_FCOE:
6602                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6603                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6604                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6605                 vsi->num_q_vectors = pf->num_fcoe_msix;
6606                 break;
6607
6608 #endif /* I40E_FCOE */
6609         default:
6610                 WARN_ON(1);
6611                 return -ENODATA;
6612         }
6613
6614         return 0;
6615 }
6616
6617 /**
6618  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6619  * @type: VSI pointer
6620  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6621  *
6622  * On error: returns error code (negative)
6623  * On success: returns 0
6624  **/
6625 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6626 {
6627         int size;
6628         int ret = 0;
6629
6630         /* allocate memory for both Tx and Rx ring pointers */
6631         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6632         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6633         if (!vsi->tx_rings)
6634                 return -ENOMEM;
6635         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6636
6637         if (alloc_qvectors) {
6638                 /* allocate memory for q_vector pointers */
6639                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6640                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6641                 if (!vsi->q_vectors) {
6642                         ret = -ENOMEM;
6643                         goto err_vectors;
6644                 }
6645         }
6646         return ret;
6647
6648 err_vectors:
6649         kfree(vsi->tx_rings);
6650         return ret;
6651 }
6652
6653 /**
6654  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6655  * @pf: board private structure
6656  * @type: type of VSI
6657  *
6658  * On error: returns error code (negative)
6659  * On success: returns vsi index in PF (positive)
6660  **/
6661 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6662 {
6663         int ret = -ENODEV;
6664         struct i40e_vsi *vsi;
6665         int vsi_idx;
6666         int i;
6667
6668         /* Need to protect the allocation of the VSIs at the PF level */
6669         mutex_lock(&pf->switch_mutex);
6670
6671         /* VSI list may be fragmented if VSI creation/destruction has
6672          * been happening.  We can afford to do a quick scan to look
6673          * for any free VSIs in the list.
6674          *
6675          * find next empty vsi slot, looping back around if necessary
6676          */
6677         i = pf->next_vsi;
6678         while (i < pf->num_alloc_vsi && pf->vsi[i])
6679                 i++;
6680         if (i >= pf->num_alloc_vsi) {
6681                 i = 0;
6682                 while (i < pf->next_vsi && pf->vsi[i])
6683                         i++;
6684         }
6685
6686         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6687                 vsi_idx = i;             /* Found one! */
6688         } else {
6689                 ret = -ENODEV;
6690                 goto unlock_pf;  /* out of VSI slots! */
6691         }
6692         pf->next_vsi = ++i;
6693
6694         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6695         if (!vsi) {
6696                 ret = -ENOMEM;
6697                 goto unlock_pf;
6698         }
6699         vsi->type = type;
6700         vsi->back = pf;
6701         set_bit(__I40E_DOWN, &vsi->state);
6702         vsi->flags = 0;
6703         vsi->idx = vsi_idx;
6704         vsi->rx_itr_setting = pf->rx_itr_default;
6705         vsi->tx_itr_setting = pf->tx_itr_default;
6706         vsi->netdev_registered = false;
6707         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6708         INIT_LIST_HEAD(&vsi->mac_filter_list);
6709         vsi->irqs_ready = false;
6710
6711         ret = i40e_set_num_rings_in_vsi(vsi);
6712         if (ret)
6713                 goto err_rings;
6714
6715         ret = i40e_vsi_alloc_arrays(vsi, true);
6716         if (ret)
6717                 goto err_rings;
6718
6719         /* Setup default MSIX irq handler for VSI */
6720         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6721
6722         pf->vsi[vsi_idx] = vsi;
6723         ret = vsi_idx;
6724         goto unlock_pf;
6725
6726 err_rings:
6727         pf->next_vsi = i - 1;
6728         kfree(vsi);
6729 unlock_pf:
6730         mutex_unlock(&pf->switch_mutex);
6731         return ret;
6732 }
6733
6734 /**
6735  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6736  * @type: VSI pointer
6737  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6738  *
6739  * On error: returns error code (negative)
6740  * On success: returns 0
6741  **/
6742 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6743 {
6744         /* free the ring and vector containers */
6745         if (free_qvectors) {
6746                 kfree(vsi->q_vectors);
6747                 vsi->q_vectors = NULL;
6748         }
6749         kfree(vsi->tx_rings);
6750         vsi->tx_rings = NULL;
6751         vsi->rx_rings = NULL;
6752 }
6753
6754 /**
6755  * i40e_vsi_clear - Deallocate the VSI provided
6756  * @vsi: the VSI being un-configured
6757  **/
6758 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6759 {
6760         struct i40e_pf *pf;
6761
6762         if (!vsi)
6763                 return 0;
6764
6765         if (!vsi->back)
6766                 goto free_vsi;
6767         pf = vsi->back;
6768
6769         mutex_lock(&pf->switch_mutex);
6770         if (!pf->vsi[vsi->idx]) {
6771                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6772                         vsi->idx, vsi->idx, vsi, vsi->type);
6773                 goto unlock_vsi;
6774         }
6775
6776         if (pf->vsi[vsi->idx] != vsi) {
6777                 dev_err(&pf->pdev->dev,
6778                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6779                         pf->vsi[vsi->idx]->idx,
6780                         pf->vsi[vsi->idx],
6781                         pf->vsi[vsi->idx]->type,
6782                         vsi->idx, vsi, vsi->type);
6783                 goto unlock_vsi;
6784         }
6785
6786         /* updates the pf for this cleared vsi */
6787         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6788         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6789
6790         i40e_vsi_free_arrays(vsi, true);
6791
6792         pf->vsi[vsi->idx] = NULL;
6793         if (vsi->idx < pf->next_vsi)
6794                 pf->next_vsi = vsi->idx;
6795
6796 unlock_vsi:
6797         mutex_unlock(&pf->switch_mutex);
6798 free_vsi:
6799         kfree(vsi);
6800
6801         return 0;
6802 }
6803
6804 /**
6805  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6806  * @vsi: the VSI being cleaned
6807  **/
6808 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6809 {
6810         int i;
6811
6812         if (vsi->tx_rings && vsi->tx_rings[0]) {
6813                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6814                         kfree_rcu(vsi->tx_rings[i], rcu);
6815                         vsi->tx_rings[i] = NULL;
6816                         vsi->rx_rings[i] = NULL;
6817                 }
6818         }
6819 }
6820
6821 /**
6822  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6823  * @vsi: the VSI being configured
6824  **/
6825 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6826 {
6827         struct i40e_ring *tx_ring, *rx_ring;
6828         struct i40e_pf *pf = vsi->back;
6829         int i;
6830
6831         /* Set basic values in the rings to be used later during open() */
6832         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6833                 /* allocate space for both Tx and Rx in one shot */
6834                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6835                 if (!tx_ring)
6836                         goto err_out;
6837
6838                 tx_ring->queue_index = i;
6839                 tx_ring->reg_idx = vsi->base_queue + i;
6840                 tx_ring->ring_active = false;
6841                 tx_ring->vsi = vsi;
6842                 tx_ring->netdev = vsi->netdev;
6843                 tx_ring->dev = &pf->pdev->dev;
6844                 tx_ring->count = vsi->num_desc;
6845                 tx_ring->size = 0;
6846                 tx_ring->dcb_tc = 0;
6847                 vsi->tx_rings[i] = tx_ring;
6848
6849                 rx_ring = &tx_ring[1];
6850                 rx_ring->queue_index = i;
6851                 rx_ring->reg_idx = vsi->base_queue + i;
6852                 rx_ring->ring_active = false;
6853                 rx_ring->vsi = vsi;
6854                 rx_ring->netdev = vsi->netdev;
6855                 rx_ring->dev = &pf->pdev->dev;
6856                 rx_ring->count = vsi->num_desc;
6857                 rx_ring->size = 0;
6858                 rx_ring->dcb_tc = 0;
6859                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6860                         set_ring_16byte_desc_enabled(rx_ring);
6861                 else
6862                         clear_ring_16byte_desc_enabled(rx_ring);
6863                 vsi->rx_rings[i] = rx_ring;
6864         }
6865
6866         return 0;
6867
6868 err_out:
6869         i40e_vsi_clear_rings(vsi);
6870         return -ENOMEM;
6871 }
6872
6873 /**
6874  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6875  * @pf: board private structure
6876  * @vectors: the number of MSI-X vectors to request
6877  *
6878  * Returns the number of vectors reserved, or error
6879  **/
6880 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6881 {
6882         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6883                                         I40E_MIN_MSIX, vectors);
6884         if (vectors < 0) {
6885                 dev_info(&pf->pdev->dev,
6886                          "MSI-X vector reservation failed: %d\n", vectors);
6887                 vectors = 0;
6888         }
6889
6890         return vectors;
6891 }
6892
6893 /**
6894  * i40e_init_msix - Setup the MSIX capability
6895  * @pf: board private structure
6896  *
6897  * Work with the OS to set up the MSIX vectors needed.
6898  *
6899  * Returns 0 on success, negative on failure
6900  **/
6901 static int i40e_init_msix(struct i40e_pf *pf)
6902 {
6903         i40e_status err = 0;
6904         struct i40e_hw *hw = &pf->hw;
6905         int other_vecs = 0;
6906         int v_budget, i;
6907         int vec;
6908
6909         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6910                 return -ENODEV;
6911
6912         /* The number of vectors we'll request will be comprised of:
6913          *   - Add 1 for "other" cause for Admin Queue events, etc.
6914          *   - The number of LAN queue pairs
6915          *      - Queues being used for RSS.
6916          *              We don't need as many as max_rss_size vectors.
6917          *              use rss_size instead in the calculation since that
6918          *              is governed by number of cpus in the system.
6919          *      - assumes symmetric Tx/Rx pairing
6920          *   - The number of VMDq pairs
6921 #ifdef I40E_FCOE
6922          *   - The number of FCOE qps.
6923 #endif
6924          * Once we count this up, try the request.
6925          *
6926          * If we can't get what we want, we'll simplify to nearly nothing
6927          * and try again.  If that still fails, we punt.
6928          */
6929         pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
6930         pf->num_vmdq_msix = pf->num_vmdq_qps;
6931         other_vecs = 1;
6932         other_vecs += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6933         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6934                 other_vecs++;
6935
6936         /* Scale down if necessary, and the rings will share vectors */
6937         pf->num_lan_msix = min_t(int, pf->num_lan_msix,
6938                         (hw->func_caps.num_msix_vectors - other_vecs));
6939         v_budget = pf->num_lan_msix + other_vecs;
6940
6941 #ifdef I40E_FCOE
6942         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6943                 pf->num_fcoe_msix = pf->num_fcoe_qps;
6944                 v_budget += pf->num_fcoe_msix;
6945         }
6946 #endif
6947
6948         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6949                                    GFP_KERNEL);
6950         if (!pf->msix_entries)
6951                 return -ENOMEM;
6952
6953         for (i = 0; i < v_budget; i++)
6954                 pf->msix_entries[i].entry = i;
6955         vec = i40e_reserve_msix_vectors(pf, v_budget);
6956
6957         if (vec != v_budget) {
6958                 /* If we have limited resources, we will start with no vectors
6959                  * for the special features and then allocate vectors to some
6960                  * of these features based on the policy and at the end disable
6961                  * the features that did not get any vectors.
6962                  */
6963 #ifdef I40E_FCOE
6964                 pf->num_fcoe_qps = 0;
6965                 pf->num_fcoe_msix = 0;
6966 #endif
6967                 pf->num_vmdq_msix = 0;
6968         }
6969
6970         if (vec < I40E_MIN_MSIX) {
6971                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6972                 kfree(pf->msix_entries);
6973                 pf->msix_entries = NULL;
6974                 return -ENODEV;
6975
6976         } else if (vec == I40E_MIN_MSIX) {
6977                 /* Adjust for minimal MSIX use */
6978                 pf->num_vmdq_vsis = 0;
6979                 pf->num_vmdq_qps = 0;
6980                 pf->num_lan_qps = 1;
6981                 pf->num_lan_msix = 1;
6982
6983         } else if (vec != v_budget) {
6984                 /* reserve the misc vector */
6985                 vec--;
6986
6987                 /* Scale vector usage down */
6988                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
6989                 pf->num_vmdq_vsis = 1;
6990
6991                 /* partition out the remaining vectors */
6992                 switch (vec) {
6993                 case 2:
6994                         pf->num_lan_msix = 1;
6995                         break;
6996                 case 3:
6997 #ifdef I40E_FCOE
6998                         /* give one vector to FCoE */
6999                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7000                                 pf->num_lan_msix = 1;
7001                                 pf->num_fcoe_msix = 1;
7002                         }
7003 #else
7004                         pf->num_lan_msix = 2;
7005 #endif
7006                         break;
7007                 default:
7008 #ifdef I40E_FCOE
7009                         /* give one vector to FCoE */
7010                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7011                                 pf->num_fcoe_msix = 1;
7012                                 vec--;
7013                         }
7014 #endif
7015                         pf->num_lan_msix = min_t(int, (vec / 2),
7016                                                  pf->num_lan_qps);
7017                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
7018                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7019                         break;
7020                 }
7021         }
7022
7023         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7024             (pf->num_vmdq_msix == 0)) {
7025                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7026                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7027         }
7028 #ifdef I40E_FCOE
7029
7030         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7031                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7032                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7033         }
7034 #endif
7035         return err;
7036 }
7037
7038 /**
7039  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7040  * @vsi: the VSI being configured
7041  * @v_idx: index of the vector in the vsi struct
7042  *
7043  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7044  **/
7045 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7046 {
7047         struct i40e_q_vector *q_vector;
7048
7049         /* allocate q_vector */
7050         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7051         if (!q_vector)
7052                 return -ENOMEM;
7053
7054         q_vector->vsi = vsi;
7055         q_vector->v_idx = v_idx;
7056         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7057         if (vsi->netdev)
7058                 netif_napi_add(vsi->netdev, &q_vector->napi,
7059                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7060
7061         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7062         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7063
7064         /* tie q_vector and vsi together */
7065         vsi->q_vectors[v_idx] = q_vector;
7066
7067         return 0;
7068 }
7069
7070 /**
7071  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7072  * @vsi: the VSI being configured
7073  *
7074  * We allocate one q_vector per queue interrupt.  If allocation fails we
7075  * return -ENOMEM.
7076  **/
7077 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7078 {
7079         struct i40e_pf *pf = vsi->back;
7080         int v_idx, num_q_vectors;
7081         int err;
7082
7083         /* if not MSIX, give the one vector only to the LAN VSI */
7084         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7085                 num_q_vectors = vsi->num_q_vectors;
7086         else if (vsi == pf->vsi[pf->lan_vsi])
7087                 num_q_vectors = 1;
7088         else
7089                 return -EINVAL;
7090
7091         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7092                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7093                 if (err)
7094                         goto err_out;
7095         }
7096
7097         return 0;
7098
7099 err_out:
7100         while (v_idx--)
7101                 i40e_free_q_vector(vsi, v_idx);
7102
7103         return err;
7104 }
7105
7106 /**
7107  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7108  * @pf: board private structure to initialize
7109  **/
7110 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
7111 {
7112         int err = 0;
7113
7114         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7115                 err = i40e_init_msix(pf);
7116                 if (err) {
7117                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7118 #ifdef I40E_FCOE
7119                                        I40E_FLAG_FCOE_ENABLED   |
7120 #endif
7121                                        I40E_FLAG_RSS_ENABLED    |
7122                                        I40E_FLAG_DCB_CAPABLE    |
7123                                        I40E_FLAG_SRIOV_ENABLED  |
7124                                        I40E_FLAG_FD_SB_ENABLED  |
7125                                        I40E_FLAG_FD_ATR_ENABLED |
7126                                        I40E_FLAG_VMDQ_ENABLED);
7127
7128                         /* rework the queue expectations without MSIX */
7129                         i40e_determine_queue_usage(pf);
7130                 }
7131         }
7132
7133         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7134             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7135                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7136                 err = pci_enable_msi(pf->pdev);
7137                 if (err) {
7138                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
7139                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7140                 }
7141         }
7142
7143         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7144                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7145
7146         /* track first vector for misc interrupts */
7147         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
7148 }
7149
7150 /**
7151  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7152  * @pf: board private structure
7153  *
7154  * This sets up the handler for MSIX 0, which is used to manage the
7155  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7156  * when in MSI or Legacy interrupt mode.
7157  **/
7158 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7159 {
7160         struct i40e_hw *hw = &pf->hw;
7161         int err = 0;
7162
7163         /* Only request the irq if this is the first time through, and
7164          * not when we're rebuilding after a Reset
7165          */
7166         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7167                 err = request_irq(pf->msix_entries[0].vector,
7168                                   i40e_intr, 0, pf->int_name, pf);
7169                 if (err) {
7170                         dev_info(&pf->pdev->dev,
7171                                  "request_irq for %s failed: %d\n",
7172                                  pf->int_name, err);
7173                         return -EFAULT;
7174                 }
7175         }
7176
7177         i40e_enable_misc_int_causes(pf);
7178
7179         /* associate no queues to the misc vector */
7180         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7181         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7182
7183         i40e_flush(hw);
7184
7185         i40e_irq_dynamic_enable_icr0(pf);
7186
7187         return err;
7188 }
7189
7190 /**
7191  * i40e_config_rss - Prepare for RSS if used
7192  * @pf: board private structure
7193  **/
7194 static int i40e_config_rss(struct i40e_pf *pf)
7195 {
7196         u32 rss_key[I40E_PFQF_HKEY_MAX_INDEX + 1];
7197         struct i40e_hw *hw = &pf->hw;
7198         u32 lut = 0;
7199         int i, j;
7200         u64 hena;
7201         u32 reg_val;
7202
7203         netdev_rss_key_fill(rss_key, sizeof(rss_key));
7204         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7205                 wr32(hw, I40E_PFQF_HKEY(i), rss_key[i]);
7206
7207         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7208         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7209                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7210         hena |= I40E_DEFAULT_RSS_HENA;
7211         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7212         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7213
7214         /* Check capability and Set table size and register per hw expectation*/
7215         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7216         if (hw->func_caps.rss_table_size == 512) {
7217                 reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7218                 pf->rss_table_size = 512;
7219         } else {
7220                 pf->rss_table_size = 128;
7221                 reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7222         }
7223         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7224
7225         /* Populate the LUT with max no. of queues in round robin fashion */
7226         for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
7227
7228                 /* The assumption is that lan qp count will be the highest
7229                  * qp count for any PF VSI that needs RSS.
7230                  * If multiple VSIs need RSS support, all the qp counts
7231                  * for those VSIs should be a power of 2 for RSS to work.
7232                  * If LAN VSI is the only consumer for RSS then this requirement
7233                  * is not necessary.
7234                  */
7235                 if (j == pf->rss_size)
7236                         j = 0;
7237                 /* lut = 4-byte sliding window of 4 lut entries */
7238                 lut = (lut << 8) | (j &
7239                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
7240                 /* On i = 3, we have 4 entries in lut; write to the register */
7241                 if ((i & 3) == 3)
7242                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
7243         }
7244         i40e_flush(hw);
7245
7246         return 0;
7247 }
7248
7249 /**
7250  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7251  * @pf: board private structure
7252  * @queue_count: the requested queue count for rss.
7253  *
7254  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7255  * count which may be different from the requested queue count.
7256  **/
7257 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7258 {
7259         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7260                 return 0;
7261
7262         queue_count = min_t(int, queue_count, pf->rss_size_max);
7263
7264         if (queue_count != pf->rss_size) {
7265                 i40e_prep_for_reset(pf);
7266
7267                 pf->rss_size = queue_count;
7268
7269                 i40e_reset_and_rebuild(pf, true);
7270                 i40e_config_rss(pf);
7271         }
7272         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7273         return pf->rss_size;
7274 }
7275
7276 /**
7277  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7278  * @pf: board private structure to initialize
7279  *
7280  * i40e_sw_init initializes the Adapter private data structure.
7281  * Fields are initialized based on PCI device information and
7282  * OS network device settings (MTU size).
7283  **/
7284 static int i40e_sw_init(struct i40e_pf *pf)
7285 {
7286         int err = 0;
7287         int size;
7288
7289         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7290                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7291         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7292         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7293                 if (I40E_DEBUG_USER & debug)
7294                         pf->hw.debug_mask = debug;
7295                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7296                                                 I40E_DEFAULT_MSG_ENABLE);
7297         }
7298
7299         /* Set default capability flags */
7300         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7301                     I40E_FLAG_MSI_ENABLED     |
7302                     I40E_FLAG_MSIX_ENABLED    |
7303                     I40E_FLAG_RX_1BUF_ENABLED;
7304
7305         /* Set default ITR */
7306         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7307         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7308
7309         /* Depending on PF configurations, it is possible that the RSS
7310          * maximum might end up larger than the available queues
7311          */
7312         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
7313         pf->rss_size = 1;
7314         pf->rss_size_max = min_t(int, pf->rss_size_max,
7315                                  pf->hw.func_caps.num_tx_qp);
7316         if (pf->hw.func_caps.rss) {
7317                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7318                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7319         }
7320
7321         /* MFP mode enabled */
7322         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
7323                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7324                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7325         }
7326
7327         /* FW/NVM is not yet fixed in this regard */
7328         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7329             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7330                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7331                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7332                 /* Setup a counter for fd_atr per pf */
7333                 pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
7334                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7335                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7336                         /* Setup a counter for fd_sb per pf */
7337                         pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
7338                 } else {
7339                         dev_info(&pf->pdev->dev,
7340                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7341                 }
7342                 pf->fdir_pf_filter_count =
7343                                  pf->hw.func_caps.fd_filters_guaranteed;
7344                 pf->hw.fdir_shared_filter_count =
7345                                  pf->hw.func_caps.fd_filters_best_effort;
7346         }
7347
7348         if (pf->hw.func_caps.vmdq) {
7349                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7350                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7351                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
7352         }
7353
7354 #ifdef I40E_FCOE
7355         err = i40e_init_pf_fcoe(pf);
7356         if (err)
7357                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7358
7359 #endif /* I40E_FCOE */
7360 #ifdef CONFIG_PCI_IOV
7361         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7362                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7363                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7364                 pf->num_req_vfs = min_t(int,
7365                                         pf->hw.func_caps.num_vfs,
7366                                         I40E_MAX_VF_COUNT);
7367         }
7368 #endif /* CONFIG_PCI_IOV */
7369         pf->eeprom_version = 0xDEAD;
7370         pf->lan_veb = I40E_NO_VEB;
7371         pf->lan_vsi = I40E_NO_VSI;
7372
7373         /* set up queue assignment tracking */
7374         size = sizeof(struct i40e_lump_tracking)
7375                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7376         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7377         if (!pf->qp_pile) {
7378                 err = -ENOMEM;
7379                 goto sw_init_done;
7380         }
7381         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7382         pf->qp_pile->search_hint = 0;
7383
7384         /* set up vector assignment tracking */
7385         size = sizeof(struct i40e_lump_tracking)
7386                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
7387         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7388         if (!pf->irq_pile) {
7389                 kfree(pf->qp_pile);
7390                 err = -ENOMEM;
7391                 goto sw_init_done;
7392         }
7393         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
7394         pf->irq_pile->search_hint = 0;
7395
7396         pf->tx_timeout_recovery_level = 1;
7397
7398         mutex_init(&pf->switch_mutex);
7399
7400 sw_init_done:
7401         return err;
7402 }
7403
7404 /**
7405  * i40e_set_ntuple - set the ntuple feature flag and take action
7406  * @pf: board private structure to initialize
7407  * @features: the feature set that the stack is suggesting
7408  *
7409  * returns a bool to indicate if reset needs to happen
7410  **/
7411 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7412 {
7413         bool need_reset = false;
7414
7415         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7416          * the state changed, we need to reset.
7417          */
7418         if (features & NETIF_F_NTUPLE) {
7419                 /* Enable filters and mark for reset */
7420                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7421                         need_reset = true;
7422                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7423         } else {
7424                 /* turn off filters, mark for reset and clear SW filter list */
7425                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7426                         need_reset = true;
7427                         i40e_fdir_filter_exit(pf);
7428                 }
7429                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7430                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7431                 /* reset fd counters */
7432                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7433                 pf->fdir_pf_active_filters = 0;
7434                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7435                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7436                 /* if ATR was auto disabled it can be re-enabled. */
7437                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
7438                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
7439                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
7440         }
7441         return need_reset;
7442 }
7443
7444 /**
7445  * i40e_set_features - set the netdev feature flags
7446  * @netdev: ptr to the netdev being adjusted
7447  * @features: the feature set that the stack is suggesting
7448  **/
7449 static int i40e_set_features(struct net_device *netdev,
7450                              netdev_features_t features)
7451 {
7452         struct i40e_netdev_priv *np = netdev_priv(netdev);
7453         struct i40e_vsi *vsi = np->vsi;
7454         struct i40e_pf *pf = vsi->back;
7455         bool need_reset;
7456
7457         if (features & NETIF_F_HW_VLAN_CTAG_RX)
7458                 i40e_vlan_stripping_enable(vsi);
7459         else
7460                 i40e_vlan_stripping_disable(vsi);
7461
7462         need_reset = i40e_set_ntuple(pf, features);
7463
7464         if (need_reset)
7465                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7466
7467         return 0;
7468 }
7469
7470 #ifdef CONFIG_I40E_VXLAN
7471 /**
7472  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
7473  * @pf: board private structure
7474  * @port: The UDP port to look up
7475  *
7476  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
7477  **/
7478 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
7479 {
7480         u8 i;
7481
7482         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7483                 if (pf->vxlan_ports[i] == port)
7484                         return i;
7485         }
7486
7487         return i;
7488 }
7489
7490 /**
7491  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
7492  * @netdev: This physical port's netdev
7493  * @sa_family: Socket Family that VXLAN is notifying us about
7494  * @port: New UDP port number that VXLAN started listening to
7495  **/
7496 static void i40e_add_vxlan_port(struct net_device *netdev,
7497                                 sa_family_t sa_family, __be16 port)
7498 {
7499         struct i40e_netdev_priv *np = netdev_priv(netdev);
7500         struct i40e_vsi *vsi = np->vsi;
7501         struct i40e_pf *pf = vsi->back;
7502         u8 next_idx;
7503         u8 idx;
7504
7505         if (sa_family == AF_INET6)
7506                 return;
7507
7508         idx = i40e_get_vxlan_port_idx(pf, port);
7509
7510         /* Check if port already exists */
7511         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7512                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
7513                 return;
7514         }
7515
7516         /* Now check if there is space to add the new port */
7517         next_idx = i40e_get_vxlan_port_idx(pf, 0);
7518
7519         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7520                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
7521                             ntohs(port));
7522                 return;
7523         }
7524
7525         /* New port: add it and mark its index in the bitmap */
7526         pf->vxlan_ports[next_idx] = port;
7527         pf->pending_vxlan_bitmap |= (1 << next_idx);
7528
7529         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7530 }
7531
7532 /**
7533  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
7534  * @netdev: This physical port's netdev
7535  * @sa_family: Socket Family that VXLAN is notifying us about
7536  * @port: UDP port number that VXLAN stopped listening to
7537  **/
7538 static void i40e_del_vxlan_port(struct net_device *netdev,
7539                                 sa_family_t sa_family, __be16 port)
7540 {
7541         struct i40e_netdev_priv *np = netdev_priv(netdev);
7542         struct i40e_vsi *vsi = np->vsi;
7543         struct i40e_pf *pf = vsi->back;
7544         u8 idx;
7545
7546         if (sa_family == AF_INET6)
7547                 return;
7548
7549         idx = i40e_get_vxlan_port_idx(pf, port);
7550
7551         /* Check if port already exists */
7552         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7553                 /* if port exists, set it to 0 (mark for deletion)
7554                  * and make it pending
7555                  */
7556                 pf->vxlan_ports[idx] = 0;
7557
7558                 pf->pending_vxlan_bitmap |= (1 << idx);
7559
7560                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7561         } else {
7562                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
7563                             ntohs(port));
7564         }
7565 }
7566
7567 #endif
7568 static int i40e_get_phys_port_id(struct net_device *netdev,
7569                                  struct netdev_phys_item_id *ppid)
7570 {
7571         struct i40e_netdev_priv *np = netdev_priv(netdev);
7572         struct i40e_pf *pf = np->vsi->back;
7573         struct i40e_hw *hw = &pf->hw;
7574
7575         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
7576                 return -EOPNOTSUPP;
7577
7578         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
7579         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
7580
7581         return 0;
7582 }
7583
7584 /**
7585  * i40e_ndo_fdb_add - add an entry to the hardware database
7586  * @ndm: the input from the stack
7587  * @tb: pointer to array of nladdr (unused)
7588  * @dev: the net device pointer
7589  * @addr: the MAC address entry being added
7590  * @flags: instructions from stack about fdb operation
7591  */
7592 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
7593                             struct net_device *dev,
7594                             const unsigned char *addr, u16 vid,
7595                             u16 flags)
7596 {
7597         struct i40e_netdev_priv *np = netdev_priv(dev);
7598         struct i40e_pf *pf = np->vsi->back;
7599         int err = 0;
7600
7601         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
7602                 return -EOPNOTSUPP;
7603
7604         if (vid) {
7605                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
7606                 return -EINVAL;
7607         }
7608
7609         /* Hardware does not support aging addresses so if a
7610          * ndm_state is given only allow permanent addresses
7611          */
7612         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
7613                 netdev_info(dev, "FDB only supports static addresses\n");
7614                 return -EINVAL;
7615         }
7616
7617         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
7618                 err = dev_uc_add_excl(dev, addr);
7619         else if (is_multicast_ether_addr(addr))
7620                 err = dev_mc_add_excl(dev, addr);
7621         else
7622                 err = -EINVAL;
7623
7624         /* Only return duplicate errors if NLM_F_EXCL is set */
7625         if (err == -EEXIST && !(flags & NLM_F_EXCL))
7626                 err = 0;
7627
7628         return err;
7629 }
7630
7631 static const struct net_device_ops i40e_netdev_ops = {
7632         .ndo_open               = i40e_open,
7633         .ndo_stop               = i40e_close,
7634         .ndo_start_xmit         = i40e_lan_xmit_frame,
7635         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
7636         .ndo_set_rx_mode        = i40e_set_rx_mode,
7637         .ndo_validate_addr      = eth_validate_addr,
7638         .ndo_set_mac_address    = i40e_set_mac,
7639         .ndo_change_mtu         = i40e_change_mtu,
7640         .ndo_do_ioctl           = i40e_ioctl,
7641         .ndo_tx_timeout         = i40e_tx_timeout,
7642         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
7643         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
7644 #ifdef CONFIG_NET_POLL_CONTROLLER
7645         .ndo_poll_controller    = i40e_netpoll,
7646 #endif
7647         .ndo_setup_tc           = i40e_setup_tc,
7648 #ifdef I40E_FCOE
7649         .ndo_fcoe_enable        = i40e_fcoe_enable,
7650         .ndo_fcoe_disable       = i40e_fcoe_disable,
7651 #endif
7652         .ndo_set_features       = i40e_set_features,
7653         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
7654         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
7655         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
7656         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
7657         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
7658         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
7659 #ifdef CONFIG_I40E_VXLAN
7660         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
7661         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
7662 #endif
7663         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
7664         .ndo_fdb_add            = i40e_ndo_fdb_add,
7665 };
7666
7667 /**
7668  * i40e_config_netdev - Setup the netdev flags
7669  * @vsi: the VSI being configured
7670  *
7671  * Returns 0 on success, negative value on failure
7672  **/
7673 static int i40e_config_netdev(struct i40e_vsi *vsi)
7674 {
7675         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
7676         struct i40e_pf *pf = vsi->back;
7677         struct i40e_hw *hw = &pf->hw;
7678         struct i40e_netdev_priv *np;
7679         struct net_device *netdev;
7680         u8 mac_addr[ETH_ALEN];
7681         int etherdev_size;
7682
7683         etherdev_size = sizeof(struct i40e_netdev_priv);
7684         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
7685         if (!netdev)
7686                 return -ENOMEM;
7687
7688         vsi->netdev = netdev;
7689         np = netdev_priv(netdev);
7690         np->vsi = vsi;
7691
7692         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
7693                                   NETIF_F_GSO_UDP_TUNNEL |
7694                                   NETIF_F_TSO;
7695
7696         netdev->features = NETIF_F_SG                  |
7697                            NETIF_F_IP_CSUM             |
7698                            NETIF_F_SCTP_CSUM           |
7699                            NETIF_F_HIGHDMA             |
7700                            NETIF_F_GSO_UDP_TUNNEL      |
7701                            NETIF_F_HW_VLAN_CTAG_TX     |
7702                            NETIF_F_HW_VLAN_CTAG_RX     |
7703                            NETIF_F_HW_VLAN_CTAG_FILTER |
7704                            NETIF_F_IPV6_CSUM           |
7705                            NETIF_F_TSO                 |
7706                            NETIF_F_TSO_ECN             |
7707                            NETIF_F_TSO6                |
7708                            NETIF_F_RXCSUM              |
7709                            NETIF_F_RXHASH              |
7710                            0;
7711
7712         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
7713                 netdev->features |= NETIF_F_NTUPLE;
7714
7715         /* copy netdev features into list of user selectable features */
7716         netdev->hw_features |= netdev->features;
7717
7718         if (vsi->type == I40E_VSI_MAIN) {
7719                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
7720                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
7721                 /* The following steps are necessary to prevent reception
7722                  * of tagged packets - some older NVM configurations load a
7723                  * default a MAC-VLAN filter that accepts any tagged packet
7724                  * which must be replaced by a normal filter.
7725                  */
7726                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
7727                         i40e_add_filter(vsi, mac_addr,
7728                                         I40E_VLAN_ANY, false, true);
7729         } else {
7730                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
7731                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
7732                          pf->vsi[pf->lan_vsi]->netdev->name);
7733                 random_ether_addr(mac_addr);
7734                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
7735         }
7736         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
7737
7738         ether_addr_copy(netdev->dev_addr, mac_addr);
7739         ether_addr_copy(netdev->perm_addr, mac_addr);
7740         /* vlan gets same features (except vlan offload)
7741          * after any tweaks for specific VSI types
7742          */
7743         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
7744                                                      NETIF_F_HW_VLAN_CTAG_RX |
7745                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
7746         netdev->priv_flags |= IFF_UNICAST_FLT;
7747         netdev->priv_flags |= IFF_SUPP_NOFCS;
7748         /* Setup netdev TC information */
7749         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
7750
7751         netdev->netdev_ops = &i40e_netdev_ops;
7752         netdev->watchdog_timeo = 5 * HZ;
7753         i40e_set_ethtool_ops(netdev);
7754 #ifdef I40E_FCOE
7755         i40e_fcoe_config_netdev(netdev, vsi);
7756 #endif
7757
7758         return 0;
7759 }
7760
7761 /**
7762  * i40e_vsi_delete - Delete a VSI from the switch
7763  * @vsi: the VSI being removed
7764  *
7765  * Returns 0 on success, negative value on failure
7766  **/
7767 static void i40e_vsi_delete(struct i40e_vsi *vsi)
7768 {
7769         /* remove default VSI is not allowed */
7770         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
7771                 return;
7772
7773         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
7774 }
7775
7776 /**
7777  * i40e_add_vsi - Add a VSI to the switch
7778  * @vsi: the VSI being configured
7779  *
7780  * This initializes a VSI context depending on the VSI type to be added and
7781  * passes it down to the add_vsi aq command.
7782  **/
7783 static int i40e_add_vsi(struct i40e_vsi *vsi)
7784 {
7785         int ret = -ENODEV;
7786         struct i40e_mac_filter *f, *ftmp;
7787         struct i40e_pf *pf = vsi->back;
7788         struct i40e_hw *hw = &pf->hw;
7789         struct i40e_vsi_context ctxt;
7790         u8 enabled_tc = 0x1; /* TC0 enabled */
7791         int f_count = 0;
7792
7793         memset(&ctxt, 0, sizeof(ctxt));
7794         switch (vsi->type) {
7795         case I40E_VSI_MAIN:
7796                 /* The PF's main VSI is already setup as part of the
7797                  * device initialization, so we'll not bother with
7798                  * the add_vsi call, but we will retrieve the current
7799                  * VSI context.
7800                  */
7801                 ctxt.seid = pf->main_vsi_seid;
7802                 ctxt.pf_num = pf->hw.pf_id;
7803                 ctxt.vf_num = 0;
7804                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
7805                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7806                 if (ret) {
7807                         dev_info(&pf->pdev->dev,
7808                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
7809                                  ret, pf->hw.aq.asq_last_status);
7810                         return -ENOENT;
7811                 }
7812                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7813                 vsi->info.valid_sections = 0;
7814
7815                 vsi->seid = ctxt.seid;
7816                 vsi->id = ctxt.vsi_number;
7817
7818                 enabled_tc = i40e_pf_get_tc_map(pf);
7819
7820                 /* MFP mode setup queue map and update VSI */
7821                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
7822                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
7823                         memset(&ctxt, 0, sizeof(ctxt));
7824                         ctxt.seid = pf->main_vsi_seid;
7825                         ctxt.pf_num = pf->hw.pf_id;
7826                         ctxt.vf_num = 0;
7827                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
7828                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
7829                         if (ret) {
7830                                 dev_info(&pf->pdev->dev,
7831                                          "update vsi failed, aq_err=%d\n",
7832                                          pf->hw.aq.asq_last_status);
7833                                 ret = -ENOENT;
7834                                 goto err;
7835                         }
7836                         /* update the local VSI info queue map */
7837                         i40e_vsi_update_queue_map(vsi, &ctxt);
7838                         vsi->info.valid_sections = 0;
7839                 } else {
7840                         /* Default/Main VSI is only enabled for TC0
7841                          * reconfigure it to enable all TCs that are
7842                          * available on the port in SFP mode.
7843                          * For MFP case the iSCSI PF would use this
7844                          * flow to enable LAN+iSCSI TC.
7845                          */
7846                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
7847                         if (ret) {
7848                                 dev_info(&pf->pdev->dev,
7849                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
7850                                          enabled_tc, ret,
7851                                          pf->hw.aq.asq_last_status);
7852                                 ret = -ENOENT;
7853                         }
7854                 }
7855                 break;
7856
7857         case I40E_VSI_FDIR:
7858                 ctxt.pf_num = hw->pf_id;
7859                 ctxt.vf_num = 0;
7860                 ctxt.uplink_seid = vsi->uplink_seid;
7861                 ctxt.connection_type = 0x1;     /* regular data port */
7862                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7863                 ctxt.info.valid_sections |=
7864                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7865                 ctxt.info.switch_id =
7866                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7867                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7868                 break;
7869
7870         case I40E_VSI_VMDQ2:
7871                 ctxt.pf_num = hw->pf_id;
7872                 ctxt.vf_num = 0;
7873                 ctxt.uplink_seid = vsi->uplink_seid;
7874                 ctxt.connection_type = 0x1;     /* regular data port */
7875                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
7876
7877                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7878
7879                 /* This VSI is connected to VEB so the switch_id
7880                  * should be set to zero by default.
7881                  */
7882                 ctxt.info.switch_id = 0;
7883                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7884
7885                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7886                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7887                 break;
7888
7889         case I40E_VSI_SRIOV:
7890                 ctxt.pf_num = hw->pf_id;
7891                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
7892                 ctxt.uplink_seid = vsi->uplink_seid;
7893                 ctxt.connection_type = 0x1;     /* regular data port */
7894                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
7895
7896                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7897
7898                 /* This VSI is connected to VEB so the switch_id
7899                  * should be set to zero by default.
7900                  */
7901                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7902
7903                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
7904                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
7905                 if (pf->vf[vsi->vf_id].spoofchk) {
7906                         ctxt.info.valid_sections |=
7907                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
7908                         ctxt.info.sec_flags |=
7909                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
7910                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
7911                 }
7912                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7913                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7914                 break;
7915
7916 #ifdef I40E_FCOE
7917         case I40E_VSI_FCOE:
7918                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
7919                 if (ret) {
7920                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
7921                         return ret;
7922                 }
7923                 break;
7924
7925 #endif /* I40E_FCOE */
7926         default:
7927                 return -ENODEV;
7928         }
7929
7930         if (vsi->type != I40E_VSI_MAIN) {
7931                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
7932                 if (ret) {
7933                         dev_info(&vsi->back->pdev->dev,
7934                                  "add vsi failed, aq_err=%d\n",
7935                                  vsi->back->hw.aq.asq_last_status);
7936                         ret = -ENOENT;
7937                         goto err;
7938                 }
7939                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7940                 vsi->info.valid_sections = 0;
7941                 vsi->seid = ctxt.seid;
7942                 vsi->id = ctxt.vsi_number;
7943         }
7944
7945         /* If macvlan filters already exist, force them to get loaded */
7946         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
7947                 f->changed = true;
7948                 f_count++;
7949
7950                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
7951                         struct i40e_aqc_remove_macvlan_element_data element;
7952
7953                         memset(&element, 0, sizeof(element));
7954                         ether_addr_copy(element.mac_addr, f->macaddr);
7955                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
7956                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
7957                                                      &element, 1, NULL);
7958                         if (ret) {
7959                                 /* some older FW has a different default */
7960                                 element.flags |=
7961                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
7962                                 i40e_aq_remove_macvlan(hw, vsi->seid,
7963                                                        &element, 1, NULL);
7964                         }
7965
7966                         i40e_aq_mac_address_write(hw,
7967                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
7968                                                   f->macaddr, NULL);
7969                 }
7970         }
7971         if (f_count) {
7972                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
7973                 pf->flags |= I40E_FLAG_FILTER_SYNC;
7974         }
7975
7976         /* Update VSI BW information */
7977         ret = i40e_vsi_get_bw_info(vsi);
7978         if (ret) {
7979                 dev_info(&pf->pdev->dev,
7980                          "couldn't get vsi bw info, err %d, aq_err %d\n",
7981                          ret, pf->hw.aq.asq_last_status);
7982                 /* VSI is already added so not tearing that up */
7983                 ret = 0;
7984         }
7985
7986 err:
7987         return ret;
7988 }
7989
7990 /**
7991  * i40e_vsi_release - Delete a VSI and free its resources
7992  * @vsi: the VSI being removed
7993  *
7994  * Returns 0 on success or < 0 on error
7995  **/
7996 int i40e_vsi_release(struct i40e_vsi *vsi)
7997 {
7998         struct i40e_mac_filter *f, *ftmp;
7999         struct i40e_veb *veb = NULL;
8000         struct i40e_pf *pf;
8001         u16 uplink_seid;
8002         int i, n;
8003
8004         pf = vsi->back;
8005
8006         /* release of a VEB-owner or last VSI is not allowed */
8007         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8008                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8009                          vsi->seid, vsi->uplink_seid);
8010                 return -ENODEV;
8011         }
8012         if (vsi == pf->vsi[pf->lan_vsi] &&
8013             !test_bit(__I40E_DOWN, &pf->state)) {
8014                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8015                 return -ENODEV;
8016         }
8017
8018         uplink_seid = vsi->uplink_seid;
8019         if (vsi->type != I40E_VSI_SRIOV) {
8020                 if (vsi->netdev_registered) {
8021                         vsi->netdev_registered = false;
8022                         if (vsi->netdev) {
8023                                 /* results in a call to i40e_close() */
8024                                 unregister_netdev(vsi->netdev);
8025                         }
8026                 } else {
8027                         i40e_vsi_close(vsi);
8028                 }
8029                 i40e_vsi_disable_irq(vsi);
8030         }
8031
8032         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8033                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8034                                 f->is_vf, f->is_netdev);
8035         i40e_sync_vsi_filters(vsi);
8036
8037         i40e_vsi_delete(vsi);
8038         i40e_vsi_free_q_vectors(vsi);
8039         if (vsi->netdev) {
8040                 free_netdev(vsi->netdev);
8041                 vsi->netdev = NULL;
8042         }
8043         i40e_vsi_clear_rings(vsi);
8044         i40e_vsi_clear(vsi);
8045
8046         /* If this was the last thing on the VEB, except for the
8047          * controlling VSI, remove the VEB, which puts the controlling
8048          * VSI onto the next level down in the switch.
8049          *
8050          * Well, okay, there's one more exception here: don't remove
8051          * the orphan VEBs yet.  We'll wait for an explicit remove request
8052          * from up the network stack.
8053          */
8054         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8055                 if (pf->vsi[i] &&
8056                     pf->vsi[i]->uplink_seid == uplink_seid &&
8057                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8058                         n++;      /* count the VSIs */
8059                 }
8060         }
8061         for (i = 0; i < I40E_MAX_VEB; i++) {
8062                 if (!pf->veb[i])
8063                         continue;
8064                 if (pf->veb[i]->uplink_seid == uplink_seid)
8065                         n++;     /* count the VEBs */
8066                 if (pf->veb[i]->seid == uplink_seid)
8067                         veb = pf->veb[i];
8068         }
8069         if (n == 0 && veb && veb->uplink_seid != 0)
8070                 i40e_veb_release(veb);
8071
8072         return 0;
8073 }
8074
8075 /**
8076  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8077  * @vsi: ptr to the VSI
8078  *
8079  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8080  * corresponding SW VSI structure and initializes num_queue_pairs for the
8081  * newly allocated VSI.
8082  *
8083  * Returns 0 on success or negative on failure
8084  **/
8085 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8086 {
8087         int ret = -ENOENT;
8088         struct i40e_pf *pf = vsi->back;
8089
8090         if (vsi->q_vectors[0]) {
8091                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8092                          vsi->seid);
8093                 return -EEXIST;
8094         }
8095
8096         if (vsi->base_vector) {
8097                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8098                          vsi->seid, vsi->base_vector);
8099                 return -EEXIST;
8100         }
8101
8102         ret = i40e_vsi_alloc_q_vectors(vsi);
8103         if (ret) {
8104                 dev_info(&pf->pdev->dev,
8105                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8106                          vsi->num_q_vectors, vsi->seid, ret);
8107                 vsi->num_q_vectors = 0;
8108                 goto vector_setup_out;
8109         }
8110
8111         if (vsi->num_q_vectors)
8112                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8113                                                  vsi->num_q_vectors, vsi->idx);
8114         if (vsi->base_vector < 0) {
8115                 dev_info(&pf->pdev->dev,
8116                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8117                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8118                 i40e_vsi_free_q_vectors(vsi);
8119                 ret = -ENOENT;
8120                 goto vector_setup_out;
8121         }
8122
8123 vector_setup_out:
8124         return ret;
8125 }
8126
8127 /**
8128  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8129  * @vsi: pointer to the vsi.
8130  *
8131  * This re-allocates a vsi's queue resources.
8132  *
8133  * Returns pointer to the successfully allocated and configured VSI sw struct
8134  * on success, otherwise returns NULL on failure.
8135  **/
8136 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8137 {
8138         struct i40e_pf *pf = vsi->back;
8139         u8 enabled_tc;
8140         int ret;
8141
8142         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8143         i40e_vsi_clear_rings(vsi);
8144
8145         i40e_vsi_free_arrays(vsi, false);
8146         i40e_set_num_rings_in_vsi(vsi);
8147         ret = i40e_vsi_alloc_arrays(vsi, false);
8148         if (ret)
8149                 goto err_vsi;
8150
8151         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8152         if (ret < 0) {
8153                 dev_info(&pf->pdev->dev,
8154                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8155                          vsi->alloc_queue_pairs, vsi->seid, ret);
8156                 goto err_vsi;
8157         }
8158         vsi->base_queue = ret;
8159
8160         /* Update the FW view of the VSI. Force a reset of TC and queue
8161          * layout configurations.
8162          */
8163         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8164         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8165         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8166         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8167
8168         /* assign it some queues */
8169         ret = i40e_alloc_rings(vsi);
8170         if (ret)
8171                 goto err_rings;
8172
8173         /* map all of the rings to the q_vectors */
8174         i40e_vsi_map_rings_to_vectors(vsi);
8175         return vsi;
8176
8177 err_rings:
8178         i40e_vsi_free_q_vectors(vsi);
8179         if (vsi->netdev_registered) {
8180                 vsi->netdev_registered = false;
8181                 unregister_netdev(vsi->netdev);
8182                 free_netdev(vsi->netdev);
8183                 vsi->netdev = NULL;
8184         }
8185         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8186 err_vsi:
8187         i40e_vsi_clear(vsi);
8188         return NULL;
8189 }
8190
8191 /**
8192  * i40e_vsi_setup - Set up a VSI by a given type
8193  * @pf: board private structure
8194  * @type: VSI type
8195  * @uplink_seid: the switch element to link to
8196  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8197  *
8198  * This allocates the sw VSI structure and its queue resources, then add a VSI
8199  * to the identified VEB.
8200  *
8201  * Returns pointer to the successfully allocated and configure VSI sw struct on
8202  * success, otherwise returns NULL on failure.
8203  **/
8204 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8205                                 u16 uplink_seid, u32 param1)
8206 {
8207         struct i40e_vsi *vsi = NULL;
8208         struct i40e_veb *veb = NULL;
8209         int ret, i;
8210         int v_idx;
8211
8212         /* The requested uplink_seid must be either
8213          *     - the PF's port seid
8214          *              no VEB is needed because this is the PF
8215          *              or this is a Flow Director special case VSI
8216          *     - seid of an existing VEB
8217          *     - seid of a VSI that owns an existing VEB
8218          *     - seid of a VSI that doesn't own a VEB
8219          *              a new VEB is created and the VSI becomes the owner
8220          *     - seid of the PF VSI, which is what creates the first VEB
8221          *              this is a special case of the previous
8222          *
8223          * Find which uplink_seid we were given and create a new VEB if needed
8224          */
8225         for (i = 0; i < I40E_MAX_VEB; i++) {
8226                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8227                         veb = pf->veb[i];
8228                         break;
8229                 }
8230         }
8231
8232         if (!veb && uplink_seid != pf->mac_seid) {
8233
8234                 for (i = 0; i < pf->num_alloc_vsi; i++) {
8235                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8236                                 vsi = pf->vsi[i];
8237                                 break;
8238                         }
8239                 }
8240                 if (!vsi) {
8241                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8242                                  uplink_seid);
8243                         return NULL;
8244                 }
8245
8246                 if (vsi->uplink_seid == pf->mac_seid)
8247                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8248                                              vsi->tc_config.enabled_tc);
8249                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8250                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8251                                              vsi->tc_config.enabled_tc);
8252                 if (veb) {
8253                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
8254                                 dev_info(&vsi->back->pdev->dev,
8255                                          "%s: New VSI creation error, uplink seid of LAN VSI expected.\n",
8256                                          __func__);
8257                                 return NULL;
8258                         }
8259                         i40e_enable_pf_switch_lb(pf);
8260                 }
8261                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8262                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8263                                 veb = pf->veb[i];
8264                 }
8265                 if (!veb) {
8266                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
8267                         return NULL;
8268                 }
8269
8270                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8271                 uplink_seid = veb->seid;
8272         }
8273
8274         /* get vsi sw struct */
8275         v_idx = i40e_vsi_mem_alloc(pf, type);
8276         if (v_idx < 0)
8277                 goto err_alloc;
8278         vsi = pf->vsi[v_idx];
8279         if (!vsi)
8280                 goto err_alloc;
8281         vsi->type = type;
8282         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
8283
8284         if (type == I40E_VSI_MAIN)
8285                 pf->lan_vsi = v_idx;
8286         else if (type == I40E_VSI_SRIOV)
8287                 vsi->vf_id = param1;
8288         /* assign it some queues */
8289         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
8290                                 vsi->idx);
8291         if (ret < 0) {
8292                 dev_info(&pf->pdev->dev,
8293                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8294                          vsi->alloc_queue_pairs, vsi->seid, ret);
8295                 goto err_vsi;
8296         }
8297         vsi->base_queue = ret;
8298
8299         /* get a VSI from the hardware */
8300         vsi->uplink_seid = uplink_seid;
8301         ret = i40e_add_vsi(vsi);
8302         if (ret)
8303                 goto err_vsi;
8304
8305         switch (vsi->type) {
8306         /* setup the netdev if needed */
8307         case I40E_VSI_MAIN:
8308         case I40E_VSI_VMDQ2:
8309         case I40E_VSI_FCOE:
8310                 ret = i40e_config_netdev(vsi);
8311                 if (ret)
8312                         goto err_netdev;
8313                 ret = register_netdev(vsi->netdev);
8314                 if (ret)
8315                         goto err_netdev;
8316                 vsi->netdev_registered = true;
8317                 netif_carrier_off(vsi->netdev);
8318 #ifdef CONFIG_I40E_DCB
8319                 /* Setup DCB netlink interface */
8320                 i40e_dcbnl_setup(vsi);
8321 #endif /* CONFIG_I40E_DCB */
8322                 /* fall through */
8323
8324         case I40E_VSI_FDIR:
8325                 /* set up vectors and rings if needed */
8326                 ret = i40e_vsi_setup_vectors(vsi);
8327                 if (ret)
8328                         goto err_msix;
8329
8330                 ret = i40e_alloc_rings(vsi);
8331                 if (ret)
8332                         goto err_rings;
8333
8334                 /* map all of the rings to the q_vectors */
8335                 i40e_vsi_map_rings_to_vectors(vsi);
8336
8337                 i40e_vsi_reset_stats(vsi);
8338                 break;
8339
8340         default:
8341                 /* no netdev or rings for the other VSI types */
8342                 break;
8343         }
8344
8345         return vsi;
8346
8347 err_rings:
8348         i40e_vsi_free_q_vectors(vsi);
8349 err_msix:
8350         if (vsi->netdev_registered) {
8351                 vsi->netdev_registered = false;
8352                 unregister_netdev(vsi->netdev);
8353                 free_netdev(vsi->netdev);
8354                 vsi->netdev = NULL;
8355         }
8356 err_netdev:
8357         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8358 err_vsi:
8359         i40e_vsi_clear(vsi);
8360 err_alloc:
8361         return NULL;
8362 }
8363
8364 /**
8365  * i40e_veb_get_bw_info - Query VEB BW information
8366  * @veb: the veb to query
8367  *
8368  * Query the Tx scheduler BW configuration data for given VEB
8369  **/
8370 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
8371 {
8372         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
8373         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
8374         struct i40e_pf *pf = veb->pf;
8375         struct i40e_hw *hw = &pf->hw;
8376         u32 tc_bw_max;
8377         int ret = 0;
8378         int i;
8379
8380         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
8381                                                   &bw_data, NULL);
8382         if (ret) {
8383                 dev_info(&pf->pdev->dev,
8384                          "query veb bw config failed, aq_err=%d\n",
8385                          hw->aq.asq_last_status);
8386                 goto out;
8387         }
8388
8389         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
8390                                                    &ets_data, NULL);
8391         if (ret) {
8392                 dev_info(&pf->pdev->dev,
8393                          "query veb bw ets config failed, aq_err=%d\n",
8394                          hw->aq.asq_last_status);
8395                 goto out;
8396         }
8397
8398         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
8399         veb->bw_max_quanta = ets_data.tc_bw_max;
8400         veb->is_abs_credits = bw_data.absolute_credits_enable;
8401         veb->enabled_tc = ets_data.tc_valid_bits;
8402         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
8403                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
8404         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
8405                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
8406                 veb->bw_tc_limit_credits[i] =
8407                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
8408                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
8409         }
8410
8411 out:
8412         return ret;
8413 }
8414
8415 /**
8416  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
8417  * @pf: board private structure
8418  *
8419  * On error: returns error code (negative)
8420  * On success: returns vsi index in PF (positive)
8421  **/
8422 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
8423 {
8424         int ret = -ENOENT;
8425         struct i40e_veb *veb;
8426         int i;
8427
8428         /* Need to protect the allocation of switch elements at the PF level */
8429         mutex_lock(&pf->switch_mutex);
8430
8431         /* VEB list may be fragmented if VEB creation/destruction has
8432          * been happening.  We can afford to do a quick scan to look
8433          * for any free slots in the list.
8434          *
8435          * find next empty veb slot, looping back around if necessary
8436          */
8437         i = 0;
8438         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
8439                 i++;
8440         if (i >= I40E_MAX_VEB) {
8441                 ret = -ENOMEM;
8442                 goto err_alloc_veb;  /* out of VEB slots! */
8443         }
8444
8445         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
8446         if (!veb) {
8447                 ret = -ENOMEM;
8448                 goto err_alloc_veb;
8449         }
8450         veb->pf = pf;
8451         veb->idx = i;
8452         veb->enabled_tc = 1;
8453
8454         pf->veb[i] = veb;
8455         ret = i;
8456 err_alloc_veb:
8457         mutex_unlock(&pf->switch_mutex);
8458         return ret;
8459 }
8460
8461 /**
8462  * i40e_switch_branch_release - Delete a branch of the switch tree
8463  * @branch: where to start deleting
8464  *
8465  * This uses recursion to find the tips of the branch to be
8466  * removed, deleting until we get back to and can delete this VEB.
8467  **/
8468 static void i40e_switch_branch_release(struct i40e_veb *branch)
8469 {
8470         struct i40e_pf *pf = branch->pf;
8471         u16 branch_seid = branch->seid;
8472         u16 veb_idx = branch->idx;
8473         int i;
8474
8475         /* release any VEBs on this VEB - RECURSION */
8476         for (i = 0; i < I40E_MAX_VEB; i++) {
8477                 if (!pf->veb[i])
8478                         continue;
8479                 if (pf->veb[i]->uplink_seid == branch->seid)
8480                         i40e_switch_branch_release(pf->veb[i]);
8481         }
8482
8483         /* Release the VSIs on this VEB, but not the owner VSI.
8484          *
8485          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
8486          *       the VEB itself, so don't use (*branch) after this loop.
8487          */
8488         for (i = 0; i < pf->num_alloc_vsi; i++) {
8489                 if (!pf->vsi[i])
8490                         continue;
8491                 if (pf->vsi[i]->uplink_seid == branch_seid &&
8492                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8493                         i40e_vsi_release(pf->vsi[i]);
8494                 }
8495         }
8496
8497         /* There's one corner case where the VEB might not have been
8498          * removed, so double check it here and remove it if needed.
8499          * This case happens if the veb was created from the debugfs
8500          * commands and no VSIs were added to it.
8501          */
8502         if (pf->veb[veb_idx])
8503                 i40e_veb_release(pf->veb[veb_idx]);
8504 }
8505
8506 /**
8507  * i40e_veb_clear - remove veb struct
8508  * @veb: the veb to remove
8509  **/
8510 static void i40e_veb_clear(struct i40e_veb *veb)
8511 {
8512         if (!veb)
8513                 return;
8514
8515         if (veb->pf) {
8516                 struct i40e_pf *pf = veb->pf;
8517
8518                 mutex_lock(&pf->switch_mutex);
8519                 if (pf->veb[veb->idx] == veb)
8520                         pf->veb[veb->idx] = NULL;
8521                 mutex_unlock(&pf->switch_mutex);
8522         }
8523
8524         kfree(veb);
8525 }
8526
8527 /**
8528  * i40e_veb_release - Delete a VEB and free its resources
8529  * @veb: the VEB being removed
8530  **/
8531 void i40e_veb_release(struct i40e_veb *veb)
8532 {
8533         struct i40e_vsi *vsi = NULL;
8534         struct i40e_pf *pf;
8535         int i, n = 0;
8536
8537         pf = veb->pf;
8538
8539         /* find the remaining VSI and check for extras */
8540         for (i = 0; i < pf->num_alloc_vsi; i++) {
8541                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
8542                         n++;
8543                         vsi = pf->vsi[i];
8544                 }
8545         }
8546         if (n != 1) {
8547                 dev_info(&pf->pdev->dev,
8548                          "can't remove VEB %d with %d VSIs left\n",
8549                          veb->seid, n);
8550                 return;
8551         }
8552
8553         /* move the remaining VSI to uplink veb */
8554         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
8555         if (veb->uplink_seid) {
8556                 vsi->uplink_seid = veb->uplink_seid;
8557                 if (veb->uplink_seid == pf->mac_seid)
8558                         vsi->veb_idx = I40E_NO_VEB;
8559                 else
8560                         vsi->veb_idx = veb->veb_idx;
8561         } else {
8562                 /* floating VEB */
8563                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
8564                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
8565         }
8566
8567         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
8568         i40e_veb_clear(veb);
8569 }
8570
8571 /**
8572  * i40e_add_veb - create the VEB in the switch
8573  * @veb: the VEB to be instantiated
8574  * @vsi: the controlling VSI
8575  **/
8576 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
8577 {
8578         bool is_default = false;
8579         bool is_cloud = false;
8580         int ret;
8581
8582         /* get a VEB from the hardware */
8583         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
8584                               veb->enabled_tc, is_default,
8585                               is_cloud, &veb->seid, NULL);
8586         if (ret) {
8587                 dev_info(&veb->pf->pdev->dev,
8588                          "couldn't add VEB, err %d, aq_err %d\n",
8589                          ret, veb->pf->hw.aq.asq_last_status);
8590                 return -EPERM;
8591         }
8592
8593         /* get statistics counter */
8594         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
8595                                          &veb->stats_idx, NULL, NULL, NULL);
8596         if (ret) {
8597                 dev_info(&veb->pf->pdev->dev,
8598                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
8599                          ret, veb->pf->hw.aq.asq_last_status);
8600                 return -EPERM;
8601         }
8602         ret = i40e_veb_get_bw_info(veb);
8603         if (ret) {
8604                 dev_info(&veb->pf->pdev->dev,
8605                          "couldn't get VEB bw info, err %d, aq_err %d\n",
8606                          ret, veb->pf->hw.aq.asq_last_status);
8607                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
8608                 return -ENOENT;
8609         }
8610
8611         vsi->uplink_seid = veb->seid;
8612         vsi->veb_idx = veb->idx;
8613         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8614
8615         return 0;
8616 }
8617
8618 /**
8619  * i40e_veb_setup - Set up a VEB
8620  * @pf: board private structure
8621  * @flags: VEB setup flags
8622  * @uplink_seid: the switch element to link to
8623  * @vsi_seid: the initial VSI seid
8624  * @enabled_tc: Enabled TC bit-map
8625  *
8626  * This allocates the sw VEB structure and links it into the switch
8627  * It is possible and legal for this to be a duplicate of an already
8628  * existing VEB.  It is also possible for both uplink and vsi seids
8629  * to be zero, in order to create a floating VEB.
8630  *
8631  * Returns pointer to the successfully allocated VEB sw struct on
8632  * success, otherwise returns NULL on failure.
8633  **/
8634 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
8635                                 u16 uplink_seid, u16 vsi_seid,
8636                                 u8 enabled_tc)
8637 {
8638         struct i40e_veb *veb, *uplink_veb = NULL;
8639         int vsi_idx, veb_idx;
8640         int ret;
8641
8642         /* if one seid is 0, the other must be 0 to create a floating relay */
8643         if ((uplink_seid == 0 || vsi_seid == 0) &&
8644             (uplink_seid + vsi_seid != 0)) {
8645                 dev_info(&pf->pdev->dev,
8646                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
8647                          uplink_seid, vsi_seid);
8648                 return NULL;
8649         }
8650
8651         /* make sure there is such a vsi and uplink */
8652         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
8653                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
8654                         break;
8655         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
8656                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
8657                          vsi_seid);
8658                 return NULL;
8659         }
8660
8661         if (uplink_seid && uplink_seid != pf->mac_seid) {
8662                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
8663                         if (pf->veb[veb_idx] &&
8664                             pf->veb[veb_idx]->seid == uplink_seid) {
8665                                 uplink_veb = pf->veb[veb_idx];
8666                                 break;
8667                         }
8668                 }
8669                 if (!uplink_veb) {
8670                         dev_info(&pf->pdev->dev,
8671                                  "uplink seid %d not found\n", uplink_seid);
8672                         return NULL;
8673                 }
8674         }
8675
8676         /* get veb sw struct */
8677         veb_idx = i40e_veb_mem_alloc(pf);
8678         if (veb_idx < 0)
8679                 goto err_alloc;
8680         veb = pf->veb[veb_idx];
8681         veb->flags = flags;
8682         veb->uplink_seid = uplink_seid;
8683         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
8684         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
8685
8686         /* create the VEB in the switch */
8687         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
8688         if (ret)
8689                 goto err_veb;
8690         if (vsi_idx == pf->lan_vsi)
8691                 pf->lan_veb = veb->idx;
8692
8693         return veb;
8694
8695 err_veb:
8696         i40e_veb_clear(veb);
8697 err_alloc:
8698         return NULL;
8699 }
8700
8701 /**
8702  * i40e_setup_pf_switch_element - set pf vars based on switch type
8703  * @pf: board private structure
8704  * @ele: element we are building info from
8705  * @num_reported: total number of elements
8706  * @printconfig: should we print the contents
8707  *
8708  * helper function to assist in extracting a few useful SEID values.
8709  **/
8710 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
8711                                 struct i40e_aqc_switch_config_element_resp *ele,
8712                                 u16 num_reported, bool printconfig)
8713 {
8714         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
8715         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
8716         u8 element_type = ele->element_type;
8717         u16 seid = le16_to_cpu(ele->seid);
8718
8719         if (printconfig)
8720                 dev_info(&pf->pdev->dev,
8721                          "type=%d seid=%d uplink=%d downlink=%d\n",
8722                          element_type, seid, uplink_seid, downlink_seid);
8723
8724         switch (element_type) {
8725         case I40E_SWITCH_ELEMENT_TYPE_MAC:
8726                 pf->mac_seid = seid;
8727                 break;
8728         case I40E_SWITCH_ELEMENT_TYPE_VEB:
8729                 /* Main VEB? */
8730                 if (uplink_seid != pf->mac_seid)
8731                         break;
8732                 if (pf->lan_veb == I40E_NO_VEB) {
8733                         int v;
8734
8735                         /* find existing or else empty VEB */
8736                         for (v = 0; v < I40E_MAX_VEB; v++) {
8737                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
8738                                         pf->lan_veb = v;
8739                                         break;
8740                                 }
8741                         }
8742                         if (pf->lan_veb == I40E_NO_VEB) {
8743                                 v = i40e_veb_mem_alloc(pf);
8744                                 if (v < 0)
8745                                         break;
8746                                 pf->lan_veb = v;
8747                         }
8748                 }
8749
8750                 pf->veb[pf->lan_veb]->seid = seid;
8751                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
8752                 pf->veb[pf->lan_veb]->pf = pf;
8753                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
8754                 break;
8755         case I40E_SWITCH_ELEMENT_TYPE_VSI:
8756                 if (num_reported != 1)
8757                         break;
8758                 /* This is immediately after a reset so we can assume this is
8759                  * the PF's VSI
8760                  */
8761                 pf->mac_seid = uplink_seid;
8762                 pf->pf_seid = downlink_seid;
8763                 pf->main_vsi_seid = seid;
8764                 if (printconfig)
8765                         dev_info(&pf->pdev->dev,
8766                                  "pf_seid=%d main_vsi_seid=%d\n",
8767                                  pf->pf_seid, pf->main_vsi_seid);
8768                 break;
8769         case I40E_SWITCH_ELEMENT_TYPE_PF:
8770         case I40E_SWITCH_ELEMENT_TYPE_VF:
8771         case I40E_SWITCH_ELEMENT_TYPE_EMP:
8772         case I40E_SWITCH_ELEMENT_TYPE_BMC:
8773         case I40E_SWITCH_ELEMENT_TYPE_PE:
8774         case I40E_SWITCH_ELEMENT_TYPE_PA:
8775                 /* ignore these for now */
8776                 break;
8777         default:
8778                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
8779                          element_type, seid);
8780                 break;
8781         }
8782 }
8783
8784 /**
8785  * i40e_fetch_switch_configuration - Get switch config from firmware
8786  * @pf: board private structure
8787  * @printconfig: should we print the contents
8788  *
8789  * Get the current switch configuration from the device and
8790  * extract a few useful SEID values.
8791  **/
8792 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
8793 {
8794         struct i40e_aqc_get_switch_config_resp *sw_config;
8795         u16 next_seid = 0;
8796         int ret = 0;
8797         u8 *aq_buf;
8798         int i;
8799
8800         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
8801         if (!aq_buf)
8802                 return -ENOMEM;
8803
8804         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
8805         do {
8806                 u16 num_reported, num_total;
8807
8808                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
8809                                                 I40E_AQ_LARGE_BUF,
8810                                                 &next_seid, NULL);
8811                 if (ret) {
8812                         dev_info(&pf->pdev->dev,
8813                                  "get switch config failed %d aq_err=%x\n",
8814                                  ret, pf->hw.aq.asq_last_status);
8815                         kfree(aq_buf);
8816                         return -ENOENT;
8817                 }
8818
8819                 num_reported = le16_to_cpu(sw_config->header.num_reported);
8820                 num_total = le16_to_cpu(sw_config->header.num_total);
8821
8822                 if (printconfig)
8823                         dev_info(&pf->pdev->dev,
8824                                  "header: %d reported %d total\n",
8825                                  num_reported, num_total);
8826
8827                 for (i = 0; i < num_reported; i++) {
8828                         struct i40e_aqc_switch_config_element_resp *ele =
8829                                 &sw_config->element[i];
8830
8831                         i40e_setup_pf_switch_element(pf, ele, num_reported,
8832                                                      printconfig);
8833                 }
8834         } while (next_seid != 0);
8835
8836         kfree(aq_buf);
8837         return ret;
8838 }
8839
8840 /**
8841  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
8842  * @pf: board private structure
8843  * @reinit: if the Main VSI needs to re-initialized.
8844  *
8845  * Returns 0 on success, negative value on failure
8846  **/
8847 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
8848 {
8849         int ret;
8850
8851         /* find out what's out there already */
8852         ret = i40e_fetch_switch_configuration(pf, false);
8853         if (ret) {
8854                 dev_info(&pf->pdev->dev,
8855                          "couldn't fetch switch config, err %d, aq_err %d\n",
8856                          ret, pf->hw.aq.asq_last_status);
8857                 return ret;
8858         }
8859         i40e_pf_reset_stats(pf);
8860
8861         /* first time setup */
8862         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
8863                 struct i40e_vsi *vsi = NULL;
8864                 u16 uplink_seid;
8865
8866                 /* Set up the PF VSI associated with the PF's main VSI
8867                  * that is already in the HW switch
8868                  */
8869                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
8870                         uplink_seid = pf->veb[pf->lan_veb]->seid;
8871                 else
8872                         uplink_seid = pf->mac_seid;
8873                 if (pf->lan_vsi == I40E_NO_VSI)
8874                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
8875                 else if (reinit)
8876                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
8877                 if (!vsi) {
8878                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
8879                         i40e_fdir_teardown(pf);
8880                         return -EAGAIN;
8881                 }
8882         } else {
8883                 /* force a reset of TC and queue layout configurations */
8884                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8885                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8886                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8887                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8888         }
8889         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
8890
8891         i40e_fdir_sb_setup(pf);
8892
8893         /* Setup static PF queue filter control settings */
8894         ret = i40e_setup_pf_filter_control(pf);
8895         if (ret) {
8896                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
8897                          ret);
8898                 /* Failure here should not stop continuing other steps */
8899         }
8900
8901         /* enable RSS in the HW, even for only one queue, as the stack can use
8902          * the hash
8903          */
8904         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
8905                 i40e_config_rss(pf);
8906
8907         /* fill in link information and enable LSE reporting */
8908         i40e_update_link_info(&pf->hw, true);
8909         i40e_link_event(pf);
8910
8911         /* Initialize user-specific link properties */
8912         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8913                                   I40E_AQ_AN_COMPLETED) ? true : false);
8914
8915         /* fill in link information and enable LSE reporting */
8916         i40e_update_link_info(&pf->hw, true);
8917         i40e_link_event(pf);
8918
8919         /* Initialize user-specific link properties */
8920         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8921                                   I40E_AQ_AN_COMPLETED) ? true : false);
8922
8923         i40e_ptp_init(pf);
8924
8925         return ret;
8926 }
8927
8928 /**
8929  * i40e_determine_queue_usage - Work out queue distribution
8930  * @pf: board private structure
8931  **/
8932 static void i40e_determine_queue_usage(struct i40e_pf *pf)
8933 {
8934         int queues_left;
8935
8936         pf->num_lan_qps = 0;
8937 #ifdef I40E_FCOE
8938         pf->num_fcoe_qps = 0;
8939 #endif
8940
8941         /* Find the max queues to be put into basic use.  We'll always be
8942          * using TC0, whether or not DCB is running, and TC0 will get the
8943          * big RSS set.
8944          */
8945         queues_left = pf->hw.func_caps.num_tx_qp;
8946
8947         if ((queues_left == 1) ||
8948             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
8949                 /* one qp for PF, no queues for anything else */
8950                 queues_left = 0;
8951                 pf->rss_size = pf->num_lan_qps = 1;
8952
8953                 /* make sure all the fancies are disabled */
8954                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8955 #ifdef I40E_FCOE
8956                                I40E_FLAG_FCOE_ENABLED   |
8957 #endif
8958                                I40E_FLAG_FD_SB_ENABLED  |
8959                                I40E_FLAG_FD_ATR_ENABLED |
8960                                I40E_FLAG_DCB_CAPABLE    |
8961                                I40E_FLAG_SRIOV_ENABLED  |
8962                                I40E_FLAG_VMDQ_ENABLED);
8963         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
8964                                   I40E_FLAG_FD_SB_ENABLED |
8965                                   I40E_FLAG_FD_ATR_ENABLED |
8966                                   I40E_FLAG_DCB_CAPABLE))) {
8967                 /* one qp for PF */
8968                 pf->rss_size = pf->num_lan_qps = 1;
8969                 queues_left -= pf->num_lan_qps;
8970
8971                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8972 #ifdef I40E_FCOE
8973                                I40E_FLAG_FCOE_ENABLED   |
8974 #endif
8975                                I40E_FLAG_FD_SB_ENABLED  |
8976                                I40E_FLAG_FD_ATR_ENABLED |
8977                                I40E_FLAG_DCB_ENABLED    |
8978                                I40E_FLAG_VMDQ_ENABLED);
8979         } else {
8980                 /* Not enough queues for all TCs */
8981                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
8982                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
8983                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
8984                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
8985                 }
8986                 pf->num_lan_qps = pf->rss_size_max;
8987                 queues_left -= pf->num_lan_qps;
8988         }
8989
8990 #ifdef I40E_FCOE
8991         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
8992                 if (I40E_DEFAULT_FCOE <= queues_left) {
8993                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
8994                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
8995                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
8996                 } else {
8997                         pf->num_fcoe_qps = 0;
8998                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
8999                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9000                 }
9001
9002                 queues_left -= pf->num_fcoe_qps;
9003         }
9004
9005 #endif
9006         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9007                 if (queues_left > 1) {
9008                         queues_left -= 1; /* save 1 queue for FD */
9009                 } else {
9010                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9011                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9012                 }
9013         }
9014
9015         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9016             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9017                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9018                                         (queues_left / pf->num_vf_qps));
9019                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9020         }
9021
9022         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9023             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9024                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9025                                           (queues_left / pf->num_vmdq_qps));
9026                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9027         }
9028
9029         pf->queues_left = queues_left;
9030 #ifdef I40E_FCOE
9031         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9032 #endif
9033 }
9034
9035 /**
9036  * i40e_setup_pf_filter_control - Setup PF static filter control
9037  * @pf: PF to be setup
9038  *
9039  * i40e_setup_pf_filter_control sets up a pf's initial filter control
9040  * settings. If PE/FCoE are enabled then it will also set the per PF
9041  * based filter sizes required for them. It also enables Flow director,
9042  * ethertype and macvlan type filter settings for the pf.
9043  *
9044  * Returns 0 on success, negative on failure
9045  **/
9046 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9047 {
9048         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9049
9050         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9051
9052         /* Flow Director is enabled */
9053         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9054                 settings->enable_fdir = true;
9055
9056         /* Ethtype and MACVLAN filters enabled for PF */
9057         settings->enable_ethtype = true;
9058         settings->enable_macvlan = true;
9059
9060         if (i40e_set_filter_control(&pf->hw, settings))
9061                 return -ENOENT;
9062
9063         return 0;
9064 }
9065
9066 #define INFO_STRING_LEN 255
9067 static void i40e_print_features(struct i40e_pf *pf)
9068 {
9069         struct i40e_hw *hw = &pf->hw;
9070         char *buf, *string;
9071
9072         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9073         if (!string) {
9074                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9075                 return;
9076         }
9077
9078         buf = string;
9079
9080         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9081 #ifdef CONFIG_PCI_IOV
9082         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9083 #endif
9084         buf += sprintf(buf, "VSIs: %d QP: %d ", pf->hw.func_caps.num_vsis,
9085                        pf->vsi[pf->lan_vsi]->num_queue_pairs);
9086
9087         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9088                 buf += sprintf(buf, "RSS ");
9089         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9090                 buf += sprintf(buf, "FD_ATR ");
9091         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9092                 buf += sprintf(buf, "FD_SB ");
9093                 buf += sprintf(buf, "NTUPLE ");
9094         }
9095         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9096                 buf += sprintf(buf, "DCB ");
9097         if (pf->flags & I40E_FLAG_PTP)
9098                 buf += sprintf(buf, "PTP ");
9099 #ifdef I40E_FCOE
9100         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9101                 buf += sprintf(buf, "FCOE ");
9102 #endif
9103
9104         BUG_ON(buf > (string + INFO_STRING_LEN));
9105         dev_info(&pf->pdev->dev, "%s\n", string);
9106         kfree(string);
9107 }
9108
9109 /**
9110  * i40e_probe - Device initialization routine
9111  * @pdev: PCI device information struct
9112  * @ent: entry in i40e_pci_tbl
9113  *
9114  * i40e_probe initializes a pf identified by a pci_dev structure.
9115  * The OS initialization, configuring of the pf private structure,
9116  * and a hardware reset occur.
9117  *
9118  * Returns 0 on success, negative on failure
9119  **/
9120 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9121 {
9122         struct i40e_pf *pf;
9123         struct i40e_hw *hw;
9124         static u16 pfs_found;
9125         u16 link_status;
9126         int err = 0;
9127         u32 len;
9128         u32 i;
9129
9130         err = pci_enable_device_mem(pdev);
9131         if (err)
9132                 return err;
9133
9134         /* set up for high or low dma */
9135         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9136         if (err) {
9137                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9138                 if (err) {
9139                         dev_err(&pdev->dev,
9140                                 "DMA configuration failed: 0x%x\n", err);
9141                         goto err_dma;
9142                 }
9143         }
9144
9145         /* set up pci connections */
9146         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9147                                            IORESOURCE_MEM), i40e_driver_name);
9148         if (err) {
9149                 dev_info(&pdev->dev,
9150                          "pci_request_selected_regions failed %d\n", err);
9151                 goto err_pci_reg;
9152         }
9153
9154         pci_enable_pcie_error_reporting(pdev);
9155         pci_set_master(pdev);
9156
9157         /* Now that we have a PCI connection, we need to do the
9158          * low level device setup.  This is primarily setting up
9159          * the Admin Queue structures and then querying for the
9160          * device's current profile information.
9161          */
9162         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9163         if (!pf) {
9164                 err = -ENOMEM;
9165                 goto err_pf_alloc;
9166         }
9167         pf->next_vsi = 0;
9168         pf->pdev = pdev;
9169         set_bit(__I40E_DOWN, &pf->state);
9170
9171         hw = &pf->hw;
9172         hw->back = pf;
9173         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
9174                               pci_resource_len(pdev, 0));
9175         if (!hw->hw_addr) {
9176                 err = -EIO;
9177                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9178                          (unsigned int)pci_resource_start(pdev, 0),
9179                          (unsigned int)pci_resource_len(pdev, 0), err);
9180                 goto err_ioremap;
9181         }
9182         hw->vendor_id = pdev->vendor;
9183         hw->device_id = pdev->device;
9184         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
9185         hw->subsystem_vendor_id = pdev->subsystem_vendor;
9186         hw->subsystem_device_id = pdev->subsystem_device;
9187         hw->bus.device = PCI_SLOT(pdev->devfn);
9188         hw->bus.func = PCI_FUNC(pdev->devfn);
9189         pf->instance = pfs_found;
9190
9191         if (debug != -1) {
9192                 pf->msg_enable = pf->hw.debug_mask;
9193                 pf->msg_enable = debug;
9194         }
9195
9196         /* do a special CORER for clearing PXE mode once at init */
9197         if (hw->revision_id == 0 &&
9198             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
9199                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
9200                 i40e_flush(hw);
9201                 msleep(200);
9202                 pf->corer_count++;
9203
9204                 i40e_clear_pxe_mode(hw);
9205         }
9206
9207         /* Reset here to make sure all is clean and to define PF 'n' */
9208         i40e_clear_hw(hw);
9209         err = i40e_pf_reset(hw);
9210         if (err) {
9211                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
9212                 goto err_pf_reset;
9213         }
9214         pf->pfr_count++;
9215
9216         hw->aq.num_arq_entries = I40E_AQ_LEN;
9217         hw->aq.num_asq_entries = I40E_AQ_LEN;
9218         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9219         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9220         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
9221
9222         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
9223                  "%s-%s:misc",
9224                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
9225
9226         err = i40e_init_shared_code(hw);
9227         if (err) {
9228                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
9229                 goto err_pf_reset;
9230         }
9231
9232         /* set up a default setting for link flow control */
9233         pf->hw.fc.requested_mode = I40E_FC_NONE;
9234
9235         err = i40e_init_adminq(hw);
9236         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
9237         if (err) {
9238                 dev_info(&pdev->dev,
9239                          "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");
9240                 goto err_pf_reset;
9241         }
9242
9243         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
9244             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
9245                 dev_info(&pdev->dev,
9246                          "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");
9247         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
9248                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
9249                 dev_info(&pdev->dev,
9250                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
9251
9252
9253         i40e_verify_eeprom(pf);
9254
9255         /* Rev 0 hardware was never productized */
9256         if (hw->revision_id < 1)
9257                 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");
9258
9259         i40e_clear_pxe_mode(hw);
9260         err = i40e_get_capabilities(pf);
9261         if (err)
9262                 goto err_adminq_setup;
9263
9264         err = i40e_sw_init(pf);
9265         if (err) {
9266                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
9267                 goto err_sw_init;
9268         }
9269
9270         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
9271                                 hw->func_caps.num_rx_qp,
9272                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
9273         if (err) {
9274                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
9275                 goto err_init_lan_hmc;
9276         }
9277
9278         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
9279         if (err) {
9280                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
9281                 err = -ENOENT;
9282                 goto err_configure_lan_hmc;
9283         }
9284
9285         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
9286          * Ignore error return codes because if it was already disabled via
9287          * hardware settings this will fail
9288          */
9289         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
9290             (pf->hw.aq.fw_maj_ver < 4)) {
9291                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
9292                 i40e_aq_stop_lldp(hw, true, NULL);
9293         }
9294
9295         i40e_get_mac_addr(hw, hw->mac.addr);
9296         if (!is_valid_ether_addr(hw->mac.addr)) {
9297                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
9298                 err = -EIO;
9299                 goto err_mac_addr;
9300         }
9301         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
9302         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
9303         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
9304         if (is_valid_ether_addr(hw->mac.port_addr))
9305                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
9306 #ifdef I40E_FCOE
9307         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
9308         if (err)
9309                 dev_info(&pdev->dev,
9310                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
9311         if (!is_valid_ether_addr(hw->mac.san_addr)) {
9312                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
9313                          hw->mac.san_addr);
9314                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
9315         }
9316         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
9317 #endif /* I40E_FCOE */
9318
9319         pci_set_drvdata(pdev, pf);
9320         pci_save_state(pdev);
9321 #ifdef CONFIG_I40E_DCB
9322         err = i40e_init_pf_dcb(pf);
9323         if (err) {
9324                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
9325                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9326                 /* Continue without DCB enabled */
9327         }
9328 #endif /* CONFIG_I40E_DCB */
9329
9330         /* set up periodic task facility */
9331         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
9332         pf->service_timer_period = HZ;
9333
9334         INIT_WORK(&pf->service_task, i40e_service_task);
9335         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
9336         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
9337         pf->link_check_timeout = jiffies;
9338
9339         /* WoL defaults to disabled */
9340         pf->wol_en = false;
9341         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
9342
9343         /* set up the main switch operations */
9344         i40e_determine_queue_usage(pf);
9345         i40e_init_interrupt_scheme(pf);
9346
9347         /* The number of VSIs reported by the FW is the minimum guaranteed
9348          * to us; HW supports far more and we share the remaining pool with
9349          * the other PFs. We allocate space for more than the guarantee with
9350          * the understanding that we might not get them all later.
9351          */
9352         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
9353                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
9354         else
9355                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
9356
9357         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
9358         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
9359         pf->vsi = kzalloc(len, GFP_KERNEL);
9360         if (!pf->vsi) {
9361                 err = -ENOMEM;
9362                 goto err_switch_setup;
9363         }
9364
9365         err = i40e_setup_pf_switch(pf, false);
9366         if (err) {
9367                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
9368                 goto err_vsis;
9369         }
9370         /* if FDIR VSI was set up, start it now */
9371         for (i = 0; i < pf->num_alloc_vsi; i++) {
9372                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
9373                         i40e_vsi_open(pf->vsi[i]);
9374                         break;
9375                 }
9376         }
9377
9378         /* driver is only interested in link up/down and module qualification
9379          * reports from firmware
9380          */
9381         err = i40e_aq_set_phy_int_mask(&pf->hw,
9382                                        I40E_AQ_EVENT_LINK_UPDOWN |
9383                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
9384         if (err)
9385                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", err);
9386
9387         msleep(75);
9388         err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
9389         if (err) {
9390                 dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
9391                          pf->hw.aq.asq_last_status);
9392         }
9393
9394         /* The main driver is (mostly) up and happy. We need to set this state
9395          * before setting up the misc vector or we get a race and the vector
9396          * ends up disabled forever.
9397          */
9398         clear_bit(__I40E_DOWN, &pf->state);
9399
9400         /* In case of MSIX we are going to setup the misc vector right here
9401          * to handle admin queue events etc. In case of legacy and MSI
9402          * the misc functionality and queue processing is combined in
9403          * the same vector and that gets setup at open.
9404          */
9405         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9406                 err = i40e_setup_misc_vector(pf);
9407                 if (err) {
9408                         dev_info(&pdev->dev,
9409                                  "setup of misc vector failed: %d\n", err);
9410                         goto err_vsis;
9411                 }
9412         }
9413
9414 #ifdef CONFIG_PCI_IOV
9415         /* prep for VF support */
9416         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9417             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
9418             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
9419                 u32 val;
9420
9421                 /* disable link interrupts for VFs */
9422                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
9423                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
9424                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
9425                 i40e_flush(hw);
9426
9427                 if (pci_num_vf(pdev)) {
9428                         dev_info(&pdev->dev,
9429                                  "Active VFs found, allocating resources.\n");
9430                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
9431                         if (err)
9432                                 dev_info(&pdev->dev,
9433                                          "Error %d allocating resources for existing VFs\n",
9434                                          err);
9435                 }
9436         }
9437 #endif /* CONFIG_PCI_IOV */
9438
9439         pfs_found++;
9440
9441         i40e_dbg_pf_init(pf);
9442
9443         /* tell the firmware that we're starting */
9444         i40e_send_version(pf);
9445
9446         /* since everything's happy, start the service_task timer */
9447         mod_timer(&pf->service_timer,
9448                   round_jiffies(jiffies + pf->service_timer_period));
9449
9450 #ifdef I40E_FCOE
9451         /* create FCoE interface */
9452         i40e_fcoe_vsi_setup(pf);
9453
9454 #endif
9455         /* Get the negotiated link width and speed from PCI config space */
9456         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
9457
9458         i40e_set_pci_config_data(hw, link_status);
9459
9460         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
9461                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
9462                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
9463                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
9464                  "Unknown"),
9465                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
9466                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
9467                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
9468                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
9469                  "Unknown"));
9470
9471         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
9472             hw->bus.speed < i40e_bus_speed_8000) {
9473                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
9474                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
9475         }
9476
9477         /* print a string summarizing features */
9478         i40e_print_features(pf);
9479
9480         return 0;
9481
9482         /* Unwind what we've done if something failed in the setup */
9483 err_vsis:
9484         set_bit(__I40E_DOWN, &pf->state);
9485         i40e_clear_interrupt_scheme(pf);
9486         kfree(pf->vsi);
9487 err_switch_setup:
9488         i40e_reset_interrupt_capability(pf);
9489         del_timer_sync(&pf->service_timer);
9490 err_mac_addr:
9491 err_configure_lan_hmc:
9492         (void)i40e_shutdown_lan_hmc(hw);
9493 err_init_lan_hmc:
9494         kfree(pf->qp_pile);
9495         kfree(pf->irq_pile);
9496 err_sw_init:
9497 err_adminq_setup:
9498         (void)i40e_shutdown_adminq(hw);
9499 err_pf_reset:
9500         iounmap(hw->hw_addr);
9501 err_ioremap:
9502         kfree(pf);
9503 err_pf_alloc:
9504         pci_disable_pcie_error_reporting(pdev);
9505         pci_release_selected_regions(pdev,
9506                                      pci_select_bars(pdev, IORESOURCE_MEM));
9507 err_pci_reg:
9508 err_dma:
9509         pci_disable_device(pdev);
9510         return err;
9511 }
9512
9513 /**
9514  * i40e_remove - Device removal routine
9515  * @pdev: PCI device information struct
9516  *
9517  * i40e_remove is called by the PCI subsystem to alert the driver
9518  * that is should release a PCI device.  This could be caused by a
9519  * Hot-Plug event, or because the driver is going to be removed from
9520  * memory.
9521  **/
9522 static void i40e_remove(struct pci_dev *pdev)
9523 {
9524         struct i40e_pf *pf = pci_get_drvdata(pdev);
9525         i40e_status ret_code;
9526         int i;
9527
9528         i40e_dbg_pf_exit(pf);
9529
9530         i40e_ptp_stop(pf);
9531
9532         /* no more scheduling of any task */
9533         set_bit(__I40E_DOWN, &pf->state);
9534         del_timer_sync(&pf->service_timer);
9535         cancel_work_sync(&pf->service_task);
9536
9537         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
9538                 i40e_free_vfs(pf);
9539                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
9540         }
9541
9542         i40e_fdir_teardown(pf);
9543
9544         /* If there is a switch structure or any orphans, remove them.
9545          * This will leave only the PF's VSI remaining.
9546          */
9547         for (i = 0; i < I40E_MAX_VEB; i++) {
9548                 if (!pf->veb[i])
9549                         continue;
9550
9551                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
9552                     pf->veb[i]->uplink_seid == 0)
9553                         i40e_switch_branch_release(pf->veb[i]);
9554         }
9555
9556         /* Now we can shutdown the PF's VSI, just before we kill
9557          * adminq and hmc.
9558          */
9559         if (pf->vsi[pf->lan_vsi])
9560                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
9561
9562         i40e_stop_misc_vector(pf);
9563         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9564                 synchronize_irq(pf->msix_entries[0].vector);
9565                 free_irq(pf->msix_entries[0].vector, pf);
9566         }
9567
9568         /* shutdown and destroy the HMC */
9569         if (pf->hw.hmc.hmc_obj) {
9570                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
9571                 if (ret_code)
9572                         dev_warn(&pdev->dev,
9573                                  "Failed to destroy the HMC resources: %d\n",
9574                                  ret_code);
9575         }
9576
9577         /* shutdown the adminq */
9578         ret_code = i40e_shutdown_adminq(&pf->hw);
9579         if (ret_code)
9580                 dev_warn(&pdev->dev,
9581                          "Failed to destroy the Admin Queue resources: %d\n",
9582                          ret_code);
9583
9584         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
9585         i40e_clear_interrupt_scheme(pf);
9586         for (i = 0; i < pf->num_alloc_vsi; i++) {
9587                 if (pf->vsi[i]) {
9588                         i40e_vsi_clear_rings(pf->vsi[i]);
9589                         i40e_vsi_clear(pf->vsi[i]);
9590                         pf->vsi[i] = NULL;
9591                 }
9592         }
9593
9594         for (i = 0; i < I40E_MAX_VEB; i++) {
9595                 kfree(pf->veb[i]);
9596                 pf->veb[i] = NULL;
9597         }
9598
9599         kfree(pf->qp_pile);
9600         kfree(pf->irq_pile);
9601         kfree(pf->vsi);
9602
9603         iounmap(pf->hw.hw_addr);
9604         kfree(pf);
9605         pci_release_selected_regions(pdev,
9606                                      pci_select_bars(pdev, IORESOURCE_MEM));
9607
9608         pci_disable_pcie_error_reporting(pdev);
9609         pci_disable_device(pdev);
9610 }
9611
9612 /**
9613  * i40e_pci_error_detected - warning that something funky happened in PCI land
9614  * @pdev: PCI device information struct
9615  *
9616  * Called to warn that something happened and the error handling steps
9617  * are in progress.  Allows the driver to quiesce things, be ready for
9618  * remediation.
9619  **/
9620 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
9621                                                 enum pci_channel_state error)
9622 {
9623         struct i40e_pf *pf = pci_get_drvdata(pdev);
9624
9625         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
9626
9627         /* shutdown all operations */
9628         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
9629                 rtnl_lock();
9630                 i40e_prep_for_reset(pf);
9631                 rtnl_unlock();
9632         }
9633
9634         /* Request a slot reset */
9635         return PCI_ERS_RESULT_NEED_RESET;
9636 }
9637
9638 /**
9639  * i40e_pci_error_slot_reset - a PCI slot reset just happened
9640  * @pdev: PCI device information struct
9641  *
9642  * Called to find if the driver can work with the device now that
9643  * the pci slot has been reset.  If a basic connection seems good
9644  * (registers are readable and have sane content) then return a
9645  * happy little PCI_ERS_RESULT_xxx.
9646  **/
9647 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
9648 {
9649         struct i40e_pf *pf = pci_get_drvdata(pdev);
9650         pci_ers_result_t result;
9651         int err;
9652         u32 reg;
9653
9654         dev_info(&pdev->dev, "%s\n", __func__);
9655         if (pci_enable_device_mem(pdev)) {
9656                 dev_info(&pdev->dev,
9657                          "Cannot re-enable PCI device after reset.\n");
9658                 result = PCI_ERS_RESULT_DISCONNECT;
9659         } else {
9660                 pci_set_master(pdev);
9661                 pci_restore_state(pdev);
9662                 pci_save_state(pdev);
9663                 pci_wake_from_d3(pdev, false);
9664
9665                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
9666                 if (reg == 0)
9667                         result = PCI_ERS_RESULT_RECOVERED;
9668                 else
9669                         result = PCI_ERS_RESULT_DISCONNECT;
9670         }
9671
9672         err = pci_cleanup_aer_uncorrect_error_status(pdev);
9673         if (err) {
9674                 dev_info(&pdev->dev,
9675                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
9676                          err);
9677                 /* non-fatal, continue */
9678         }
9679
9680         return result;
9681 }
9682
9683 /**
9684  * i40e_pci_error_resume - restart operations after PCI error recovery
9685  * @pdev: PCI device information struct
9686  *
9687  * Called to allow the driver to bring things back up after PCI error
9688  * and/or reset recovery has finished.
9689  **/
9690 static void i40e_pci_error_resume(struct pci_dev *pdev)
9691 {
9692         struct i40e_pf *pf = pci_get_drvdata(pdev);
9693
9694         dev_info(&pdev->dev, "%s\n", __func__);
9695         if (test_bit(__I40E_SUSPENDED, &pf->state))
9696                 return;
9697
9698         rtnl_lock();
9699         i40e_handle_reset_warning(pf);
9700         rtnl_lock();
9701 }
9702
9703 /**
9704  * i40e_shutdown - PCI callback for shutting down
9705  * @pdev: PCI device information struct
9706  **/
9707 static void i40e_shutdown(struct pci_dev *pdev)
9708 {
9709         struct i40e_pf *pf = pci_get_drvdata(pdev);
9710         struct i40e_hw *hw = &pf->hw;
9711
9712         set_bit(__I40E_SUSPENDED, &pf->state);
9713         set_bit(__I40E_DOWN, &pf->state);
9714         rtnl_lock();
9715         i40e_prep_for_reset(pf);
9716         rtnl_unlock();
9717
9718         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9719         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9720
9721         if (system_state == SYSTEM_POWER_OFF) {
9722                 pci_wake_from_d3(pdev, pf->wol_en);
9723                 pci_set_power_state(pdev, PCI_D3hot);
9724         }
9725 }
9726
9727 #ifdef CONFIG_PM
9728 /**
9729  * i40e_suspend - PCI callback for moving to D3
9730  * @pdev: PCI device information struct
9731  **/
9732 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
9733 {
9734         struct i40e_pf *pf = pci_get_drvdata(pdev);
9735         struct i40e_hw *hw = &pf->hw;
9736
9737         set_bit(__I40E_SUSPENDED, &pf->state);
9738         set_bit(__I40E_DOWN, &pf->state);
9739         del_timer_sync(&pf->service_timer);
9740         cancel_work_sync(&pf->service_task);
9741         rtnl_lock();
9742         i40e_prep_for_reset(pf);
9743         rtnl_unlock();
9744
9745         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9746         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9747
9748         pci_wake_from_d3(pdev, pf->wol_en);
9749         pci_set_power_state(pdev, PCI_D3hot);
9750
9751         return 0;
9752 }
9753
9754 /**
9755  * i40e_resume - PCI callback for waking up from D3
9756  * @pdev: PCI device information struct
9757  **/
9758 static int i40e_resume(struct pci_dev *pdev)
9759 {
9760         struct i40e_pf *pf = pci_get_drvdata(pdev);
9761         u32 err;
9762
9763         pci_set_power_state(pdev, PCI_D0);
9764         pci_restore_state(pdev);
9765         /* pci_restore_state() clears dev->state_saves, so
9766          * call pci_save_state() again to restore it.
9767          */
9768         pci_save_state(pdev);
9769
9770         err = pci_enable_device_mem(pdev);
9771         if (err) {
9772                 dev_err(&pdev->dev,
9773                         "%s: Cannot enable PCI device from suspend\n",
9774                         __func__);
9775                 return err;
9776         }
9777         pci_set_master(pdev);
9778
9779         /* no wakeup events while running */
9780         pci_wake_from_d3(pdev, false);
9781
9782         /* handling the reset will rebuild the device state */
9783         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
9784                 clear_bit(__I40E_DOWN, &pf->state);
9785                 rtnl_lock();
9786                 i40e_reset_and_rebuild(pf, false);
9787                 rtnl_unlock();
9788         }
9789
9790         return 0;
9791 }
9792
9793 #endif
9794 static const struct pci_error_handlers i40e_err_handler = {
9795         .error_detected = i40e_pci_error_detected,
9796         .slot_reset = i40e_pci_error_slot_reset,
9797         .resume = i40e_pci_error_resume,
9798 };
9799
9800 static struct pci_driver i40e_driver = {
9801         .name     = i40e_driver_name,
9802         .id_table = i40e_pci_tbl,
9803         .probe    = i40e_probe,
9804         .remove   = i40e_remove,
9805 #ifdef CONFIG_PM
9806         .suspend  = i40e_suspend,
9807         .resume   = i40e_resume,
9808 #endif
9809         .shutdown = i40e_shutdown,
9810         .err_handler = &i40e_err_handler,
9811         .sriov_configure = i40e_pci_sriov_configure,
9812 };
9813
9814 /**
9815  * i40e_init_module - Driver registration routine
9816  *
9817  * i40e_init_module is the first routine called when the driver is
9818  * loaded. All it does is register with the PCI subsystem.
9819  **/
9820 static int __init i40e_init_module(void)
9821 {
9822         pr_info("%s: %s - version %s\n", i40e_driver_name,
9823                 i40e_driver_string, i40e_driver_version_str);
9824         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
9825         i40e_dbg_init();
9826         return pci_register_driver(&i40e_driver);
9827 }
9828 module_init(i40e_init_module);
9829
9830 /**
9831  * i40e_exit_module - Driver exit cleanup routine
9832  *
9833  * i40e_exit_module is called just before the driver is removed
9834  * from memory.
9835  **/
9836 static void __exit i40e_exit_module(void)
9837 {
9838         pci_unregister_driver(&i40e_driver);
9839         i40e_dbg_exit();
9840 }
9841 module_exit(i40e_exit_module);