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 1
  42 #define DRV_VERSION_BUILD 23
  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_configure_tx_ring - Configure a transmit ring context and rest
2386  * @ring: The Tx ring to configure
2387  *
2388  * Configure the Tx descriptor ring in the HMC context.
2389  **/
2390 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2391 {
2392         struct i40e_vsi *vsi = ring->vsi;
2393         u16 pf_q = vsi->base_queue + ring->queue_index;
2394         struct i40e_hw *hw = &vsi->back->hw;
2395         struct i40e_hmc_obj_txq tx_ctx;
2396         i40e_status err = 0;
2397         u32 qtx_ctl = 0;
2398
2399         /* some ATR related tx ring init */
2400         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2401                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2402                 ring->atr_count = 0;
2403         } else {
2404                 ring->atr_sample_rate = 0;
2405         }
2406
2407         /* initialize XPS */
2408         if (ring->q_vector && ring->netdev &&
2409             vsi->tc_config.numtc <= 1 &&
2410             !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2411                 netif_set_xps_queue(ring->netdev,
2412                                     &ring->q_vector->affinity_mask,
2413                                     ring->queue_index);
2414
2415         /* clear the context structure first */
2416         memset(&tx_ctx, 0, sizeof(tx_ctx));
2417
2418         tx_ctx.new_context = 1;
2419         tx_ctx.base = (ring->dma / 128);
2420         tx_ctx.qlen = ring->count;
2421         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2422                                                I40E_FLAG_FD_ATR_ENABLED));
2423 #ifdef I40E_FCOE
2424         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2425 #endif
2426         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2427         /* FDIR VSI tx ring can still use RS bit and writebacks */
2428         if (vsi->type != I40E_VSI_FDIR)
2429                 tx_ctx.head_wb_ena = 1;
2430         tx_ctx.head_wb_addr = ring->dma +
2431                               (ring->count * sizeof(struct i40e_tx_desc));
2432
2433         /* As part of VSI creation/update, FW allocates certain
2434          * Tx arbitration queue sets for each TC enabled for
2435          * the VSI. The FW returns the handles to these queue
2436          * sets as part of the response buffer to Add VSI,
2437          * Update VSI, etc. AQ commands. It is expected that
2438          * these queue set handles be associated with the Tx
2439          * queues by the driver as part of the TX queue context
2440          * initialization. This has to be done regardless of
2441          * DCB as by default everything is mapped to TC0.
2442          */
2443         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2444         tx_ctx.rdylist_act = 0;
2445
2446         /* clear the context in the HMC */
2447         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2448         if (err) {
2449                 dev_info(&vsi->back->pdev->dev,
2450                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2451                          ring->queue_index, pf_q, err);
2452                 return -ENOMEM;
2453         }
2454
2455         /* set the context in the HMC */
2456         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2457         if (err) {
2458                 dev_info(&vsi->back->pdev->dev,
2459                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2460                          ring->queue_index, pf_q, err);
2461                 return -ENOMEM;
2462         }
2463
2464         /* Now associate this queue with this PCI function */
2465         if (vsi->type == I40E_VSI_VMDQ2) {
2466                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2467                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2468                            I40E_QTX_CTL_VFVM_INDX_MASK;
2469         } else {
2470                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2471         }
2472
2473         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2474                     I40E_QTX_CTL_PF_INDX_MASK);
2475         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2476         i40e_flush(hw);
2477
2478         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2479
2480         /* cache tail off for easier writes later */
2481         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2482
2483         return 0;
2484 }
2485
2486 /**
2487  * i40e_configure_rx_ring - Configure a receive ring context
2488  * @ring: The Rx ring to configure
2489  *
2490  * Configure the Rx descriptor ring in the HMC context.
2491  **/
2492 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2493 {
2494         struct i40e_vsi *vsi = ring->vsi;
2495         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2496         u16 pf_q = vsi->base_queue + ring->queue_index;
2497         struct i40e_hw *hw = &vsi->back->hw;
2498         struct i40e_hmc_obj_rxq rx_ctx;
2499         i40e_status err = 0;
2500
2501         ring->state = 0;
2502
2503         /* clear the context structure first */
2504         memset(&rx_ctx, 0, sizeof(rx_ctx));
2505
2506         ring->rx_buf_len = vsi->rx_buf_len;
2507         ring->rx_hdr_len = vsi->rx_hdr_len;
2508
2509         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2510         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2511
2512         rx_ctx.base = (ring->dma / 128);
2513         rx_ctx.qlen = ring->count;
2514
2515         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2516                 set_ring_16byte_desc_enabled(ring);
2517                 rx_ctx.dsize = 0;
2518         } else {
2519                 rx_ctx.dsize = 1;
2520         }
2521
2522         rx_ctx.dtype = vsi->dtype;
2523         if (vsi->dtype) {
2524                 set_ring_ps_enabled(ring);
2525                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2526                                   I40E_RX_SPLIT_IP      |
2527                                   I40E_RX_SPLIT_TCP_UDP |
2528                                   I40E_RX_SPLIT_SCTP;
2529         } else {
2530                 rx_ctx.hsplit_0 = 0;
2531         }
2532
2533         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2534                                   (chain_len * ring->rx_buf_len));
2535         if (hw->revision_id == 0)
2536                 rx_ctx.lrxqthresh = 0;
2537         else
2538                 rx_ctx.lrxqthresh = 2;
2539         rx_ctx.crcstrip = 1;
2540         rx_ctx.l2tsel = 1;
2541         rx_ctx.showiv = 1;
2542 #ifdef I40E_FCOE
2543         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2544 #endif
2545         /* set the prefena field to 1 because the manual says to */
2546         rx_ctx.prefena = 1;
2547
2548         /* clear the context in the HMC */
2549         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2550         if (err) {
2551                 dev_info(&vsi->back->pdev->dev,
2552                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2553                          ring->queue_index, pf_q, err);
2554                 return -ENOMEM;
2555         }
2556
2557         /* set the context in the HMC */
2558         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2559         if (err) {
2560                 dev_info(&vsi->back->pdev->dev,
2561                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2562                          ring->queue_index, pf_q, err);
2563                 return -ENOMEM;
2564         }
2565
2566         /* cache tail for quicker writes, and clear the reg before use */
2567         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2568         writel(0, ring->tail);
2569
2570         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2571
2572         return 0;
2573 }
2574
2575 /**
2576  * i40e_vsi_configure_tx - Configure the VSI for Tx
2577  * @vsi: VSI structure describing this set of rings and resources
2578  *
2579  * Configure the Tx VSI for operation.
2580  **/
2581 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2582 {
2583         int err = 0;
2584         u16 i;
2585
2586         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2587                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2588
2589         return err;
2590 }
2591
2592 /**
2593  * i40e_vsi_configure_rx - Configure the VSI for Rx
2594  * @vsi: the VSI being configured
2595  *
2596  * Configure the Rx VSI for operation.
2597  **/
2598 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2599 {
2600         int err = 0;
2601         u16 i;
2602
2603         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2604                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2605                                + ETH_FCS_LEN + VLAN_HLEN;
2606         else
2607                 vsi->max_frame = I40E_RXBUFFER_2048;
2608
2609         /* figure out correct receive buffer length */
2610         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2611                                     I40E_FLAG_RX_PS_ENABLED)) {
2612         case I40E_FLAG_RX_1BUF_ENABLED:
2613                 vsi->rx_hdr_len = 0;
2614                 vsi->rx_buf_len = vsi->max_frame;
2615                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2616                 break;
2617         case I40E_FLAG_RX_PS_ENABLED:
2618                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2619                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2620                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2621                 break;
2622         default:
2623                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2624                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2625                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2626                 break;
2627         }
2628
2629 #ifdef I40E_FCOE
2630         /* setup rx buffer for FCoE */
2631         if ((vsi->type == I40E_VSI_FCOE) &&
2632             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2633                 vsi->rx_hdr_len = 0;
2634                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2635                 vsi->max_frame = I40E_RXBUFFER_3072;
2636                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2637         }
2638
2639 #endif /* I40E_FCOE */
2640         /* round up for the chip's needs */
2641         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2642                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2643         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2644                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2645
2646         /* set up individual rings */
2647         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2648                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2649
2650         return err;
2651 }
2652
2653 /**
2654  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2655  * @vsi: ptr to the VSI
2656  **/
2657 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2658 {
2659         struct i40e_ring *tx_ring, *rx_ring;
2660         u16 qoffset, qcount;
2661         int i, n;
2662
2663         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2664                 return;
2665
2666         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2667                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2668                         continue;
2669
2670                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2671                 qcount = vsi->tc_config.tc_info[n].qcount;
2672                 for (i = qoffset; i < (qoffset + qcount); i++) {
2673                         rx_ring = vsi->rx_rings[i];
2674                         tx_ring = vsi->tx_rings[i];
2675                         rx_ring->dcb_tc = n;
2676                         tx_ring->dcb_tc = n;
2677                 }
2678         }
2679 }
2680
2681 /**
2682  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2683  * @vsi: ptr to the VSI
2684  **/
2685 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2686 {
2687         if (vsi->netdev)
2688                 i40e_set_rx_mode(vsi->netdev);
2689 }
2690
2691 /**
2692  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2693  * @vsi: Pointer to the targeted VSI
2694  *
2695  * This function replays the hlist on the hw where all the SB Flow Director
2696  * filters were saved.
2697  **/
2698 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2699 {
2700         struct i40e_fdir_filter *filter;
2701         struct i40e_pf *pf = vsi->back;
2702         struct hlist_node *node;
2703
2704         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2705                 return;
2706
2707         hlist_for_each_entry_safe(filter, node,
2708                                   &pf->fdir_filter_list, fdir_node) {
2709                 i40e_add_del_fdir(vsi, filter, true);
2710         }
2711 }
2712
2713 /**
2714  * i40e_vsi_configure - Set up the VSI for action
2715  * @vsi: the VSI being configured
2716  **/
2717 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2718 {
2719         int err;
2720
2721         i40e_set_vsi_rx_mode(vsi);
2722         i40e_restore_vlan(vsi);
2723         i40e_vsi_config_dcb_rings(vsi);
2724         err = i40e_vsi_configure_tx(vsi);
2725         if (!err)
2726                 err = i40e_vsi_configure_rx(vsi);
2727
2728         return err;
2729 }
2730
2731 /**
2732  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2733  * @vsi: the VSI being configured
2734  **/
2735 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2736 {
2737         struct i40e_pf *pf = vsi->back;
2738         struct i40e_q_vector *q_vector;
2739         struct i40e_hw *hw = &pf->hw;
2740         u16 vector;
2741         int i, q;
2742         u32 val;
2743         u32 qp;
2744
2745         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2746          * and PFINT_LNKLSTn registers, e.g.:
2747          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2748          */
2749         qp = vsi->base_queue;
2750         vector = vsi->base_vector;
2751         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2752                 q_vector = vsi->q_vectors[i];
2753                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2754                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2755                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2756                      q_vector->rx.itr);
2757                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2758                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2759                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2760                      q_vector->tx.itr);
2761
2762                 /* Linked list for the queuepairs assigned to this vector */
2763                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2764                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2765                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2766                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2767                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2768                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2769                               (I40E_QUEUE_TYPE_TX
2770                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2771
2772                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2773
2774                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2775                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2776                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2777                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2778                               (I40E_QUEUE_TYPE_RX
2779                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2780
2781                         /* Terminate the linked list */
2782                         if (q == (q_vector->num_ringpairs - 1))
2783                                 val |= (I40E_QUEUE_END_OF_LIST
2784                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2785
2786                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2787                         qp++;
2788                 }
2789         }
2790
2791         i40e_flush(hw);
2792 }
2793
2794 /**
2795  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2796  * @hw: ptr to the hardware info
2797  **/
2798 static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
2799 {
2800         u32 val;
2801
2802         /* clear things first */
2803         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2804         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2805
2806         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2807               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2808               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2809               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2810               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2811               I40E_PFINT_ICR0_ENA_TIMESYNC_MASK      |
2812               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2813               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2814               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2815
2816         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2817
2818         /* SW_ITR_IDX = 0, but don't change INTENA */
2819         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2820                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2821
2822         /* OTHER_ITR_IDX = 0 */
2823         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2824 }
2825
2826 /**
2827  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2828  * @vsi: the VSI being configured
2829  **/
2830 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2831 {
2832         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2833         struct i40e_pf *pf = vsi->back;
2834         struct i40e_hw *hw = &pf->hw;
2835         u32 val;
2836
2837         /* set the ITR configuration */
2838         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2839         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2840         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2841         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2842         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2843         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2844
2845         i40e_enable_misc_int_causes(hw);
2846
2847         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2848         wr32(hw, I40E_PFINT_LNKLST0, 0);
2849
2850         /* Associate the queue pair to the vector and enable the queue int */
2851         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2852               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2853               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2854
2855         wr32(hw, I40E_QINT_RQCTL(0), val);
2856
2857         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2858               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2859               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2860
2861         wr32(hw, I40E_QINT_TQCTL(0), val);
2862         i40e_flush(hw);
2863 }
2864
2865 /**
2866  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2867  * @pf: board private structure
2868  **/
2869 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2870 {
2871         struct i40e_hw *hw = &pf->hw;
2872
2873         wr32(hw, I40E_PFINT_DYN_CTL0,
2874              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2875         i40e_flush(hw);
2876 }
2877
2878 /**
2879  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2880  * @pf: board private structure
2881  **/
2882 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2883 {
2884         struct i40e_hw *hw = &pf->hw;
2885         u32 val;
2886
2887         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2888               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2889               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2890
2891         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2892         i40e_flush(hw);
2893 }
2894
2895 /**
2896  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2897  * @vsi: pointer to a vsi
2898  * @vector: enable a particular Hw Interrupt vector
2899  **/
2900 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2901 {
2902         struct i40e_pf *pf = vsi->back;
2903         struct i40e_hw *hw = &pf->hw;
2904         u32 val;
2905
2906         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2907               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2908               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2909         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2910         /* skip the flush */
2911 }
2912
2913 /**
2914  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
2915  * @vsi: pointer to a vsi
2916  * @vector: enable a particular Hw Interrupt vector
2917  **/
2918 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
2919 {
2920         struct i40e_pf *pf = vsi->back;
2921         struct i40e_hw *hw = &pf->hw;
2922         u32 val;
2923
2924         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
2925         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2926         i40e_flush(hw);
2927 }
2928
2929 /**
2930  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2931  * @irq: interrupt number
2932  * @data: pointer to a q_vector
2933  **/
2934 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2935 {
2936         struct i40e_q_vector *q_vector = data;
2937
2938         if (!q_vector->tx.ring && !q_vector->rx.ring)
2939                 return IRQ_HANDLED;
2940
2941         napi_schedule(&q_vector->napi);
2942
2943         return IRQ_HANDLED;
2944 }
2945
2946 /**
2947  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2948  * @vsi: the VSI being configured
2949  * @basename: name for the vector
2950  *
2951  * Allocates MSI-X vectors and requests interrupts from the kernel.
2952  **/
2953 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2954 {
2955         int q_vectors = vsi->num_q_vectors;
2956         struct i40e_pf *pf = vsi->back;
2957         int base = vsi->base_vector;
2958         int rx_int_idx = 0;
2959         int tx_int_idx = 0;
2960         int vector, err;
2961
2962         for (vector = 0; vector < q_vectors; vector++) {
2963                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2964
2965                 if (q_vector->tx.ring && q_vector->rx.ring) {
2966                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2967                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2968                         tx_int_idx++;
2969                 } else if (q_vector->rx.ring) {
2970                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2971                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
2972                 } else if (q_vector->tx.ring) {
2973                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2974                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
2975                 } else {
2976                         /* skip this unused q_vector */
2977                         continue;
2978                 }
2979                 err = request_irq(pf->msix_entries[base + vector].vector,
2980                                   vsi->irq_handler,
2981                                   0,
2982                                   q_vector->name,
2983                                   q_vector);
2984                 if (err) {
2985                         dev_info(&pf->pdev->dev,
2986                                  "%s: request_irq failed, error: %d\n",
2987                                  __func__, err);
2988                         goto free_queue_irqs;
2989                 }
2990                 /* assign the mask for this irq */
2991                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2992                                       &q_vector->affinity_mask);
2993         }
2994
2995         vsi->irqs_ready = true;
2996         return 0;
2997
2998 free_queue_irqs:
2999         while (vector) {
3000                 vector--;
3001                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3002                                       NULL);
3003                 free_irq(pf->msix_entries[base + vector].vector,
3004                          &(vsi->q_vectors[vector]));
3005         }
3006         return err;
3007 }
3008
3009 /**
3010  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3011  * @vsi: the VSI being un-configured
3012  **/
3013 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3014 {
3015         struct i40e_pf *pf = vsi->back;
3016         struct i40e_hw *hw = &pf->hw;
3017         int base = vsi->base_vector;
3018         int i;
3019
3020         for (i = 0; i < vsi->num_queue_pairs; i++) {
3021                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3022                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3023         }
3024
3025         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3026                 for (i = vsi->base_vector;
3027                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3028                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3029
3030                 i40e_flush(hw);
3031                 for (i = 0; i < vsi->num_q_vectors; i++)
3032                         synchronize_irq(pf->msix_entries[i + base].vector);
3033         } else {
3034                 /* Legacy and MSI mode - this stops all interrupt handling */
3035                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3036                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3037                 i40e_flush(hw);
3038                 synchronize_irq(pf->pdev->irq);
3039         }
3040 }
3041
3042 /**
3043  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3044  * @vsi: the VSI being configured
3045  **/
3046 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3047 {
3048         struct i40e_pf *pf = vsi->back;
3049         int i;
3050
3051         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3052                 for (i = vsi->base_vector;
3053                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3054                         i40e_irq_dynamic_enable(vsi, i);
3055         } else {
3056                 i40e_irq_dynamic_enable_icr0(pf);
3057         }
3058
3059         i40e_flush(&pf->hw);
3060         return 0;
3061 }
3062
3063 /**
3064  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3065  * @pf: board private structure
3066  **/
3067 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3068 {
3069         /* Disable ICR 0 */
3070         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3071         i40e_flush(&pf->hw);
3072 }
3073
3074 /**
3075  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3076  * @irq: interrupt number
3077  * @data: pointer to a q_vector
3078  *
3079  * This is the handler used for all MSI/Legacy interrupts, and deals
3080  * with both queue and non-queue interrupts.  This is also used in
3081  * MSIX mode to handle the non-queue interrupts.
3082  **/
3083 static irqreturn_t i40e_intr(int irq, void *data)
3084 {
3085         struct i40e_pf *pf = (struct i40e_pf *)data;
3086         struct i40e_hw *hw = &pf->hw;
3087         irqreturn_t ret = IRQ_NONE;
3088         u32 icr0, icr0_remaining;
3089         u32 val, ena_mask;
3090
3091         icr0 = rd32(hw, I40E_PFINT_ICR0);
3092         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3093
3094         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3095         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3096                 goto enable_intr;
3097
3098         /* if interrupt but no bits showing, must be SWINT */
3099         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3100             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3101                 pf->sw_int_count++;
3102
3103         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3104         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3105
3106                 /* temporarily disable queue cause for NAPI processing */
3107                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3108                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3109                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3110
3111                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3112                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3113                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3114
3115                 if (!test_bit(__I40E_DOWN, &pf->state))
3116                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3117         }
3118
3119         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3120                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3121                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3122         }
3123
3124         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3125                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3126                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3127         }
3128
3129         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3130                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3131                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3132         }
3133
3134         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3135                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3136                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3137                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3138                 val = rd32(hw, I40E_GLGEN_RSTAT);
3139                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3140                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3141                 if (val == I40E_RESET_CORER) {
3142                         pf->corer_count++;
3143                 } else if (val == I40E_RESET_GLOBR) {
3144                         pf->globr_count++;
3145                 } else if (val == I40E_RESET_EMPR) {
3146                         pf->empr_count++;
3147                         set_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
3148                 }
3149         }
3150
3151         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3152                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3153                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3154         }
3155
3156         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3157                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3158
3159                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3160                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3161                         i40e_ptp_tx_hwtstamp(pf);
3162                 }
3163         }
3164
3165         /* If a critical error is pending we have no choice but to reset the
3166          * device.
3167          * Report and mask out any remaining unexpected interrupts.
3168          */
3169         icr0_remaining = icr0 & ena_mask;
3170         if (icr0_remaining) {
3171                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3172                          icr0_remaining);
3173                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3174                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3175                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3176                         dev_info(&pf->pdev->dev, "device will be reset\n");
3177                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3178                         i40e_service_event_schedule(pf);
3179                 }
3180                 ena_mask &= ~icr0_remaining;
3181         }
3182         ret = IRQ_HANDLED;
3183
3184 enable_intr:
3185         /* re-enable interrupt causes */
3186         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3187         if (!test_bit(__I40E_DOWN, &pf->state)) {
3188                 i40e_service_event_schedule(pf);
3189                 i40e_irq_dynamic_enable_icr0(pf);
3190         }
3191
3192         return ret;
3193 }
3194
3195 /**
3196  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3197  * @tx_ring:  tx ring to clean
3198  * @budget:   how many cleans we're allowed
3199  *
3200  * Returns true if there's any budget left (e.g. the clean is finished)
3201  **/
3202 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3203 {
3204         struct i40e_vsi *vsi = tx_ring->vsi;
3205         u16 i = tx_ring->next_to_clean;
3206         struct i40e_tx_buffer *tx_buf;
3207         struct i40e_tx_desc *tx_desc;
3208
3209         tx_buf = &tx_ring->tx_bi[i];
3210         tx_desc = I40E_TX_DESC(tx_ring, i);
3211         i -= tx_ring->count;
3212
3213         do {
3214                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3215
3216                 /* if next_to_watch is not set then there is no work pending */
3217                 if (!eop_desc)
3218                         break;
3219
3220                 /* prevent any other reads prior to eop_desc */
3221                 read_barrier_depends();
3222
3223                 /* if the descriptor isn't done, no work yet to do */
3224                 if (!(eop_desc->cmd_type_offset_bsz &
3225                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3226                         break;
3227
3228                 /* clear next_to_watch to prevent false hangs */
3229                 tx_buf->next_to_watch = NULL;
3230
3231                 tx_desc->buffer_addr = 0;
3232                 tx_desc->cmd_type_offset_bsz = 0;
3233                 /* move past filter desc */
3234                 tx_buf++;
3235                 tx_desc++;
3236                 i++;
3237                 if (unlikely(!i)) {
3238                         i -= tx_ring->count;
3239                         tx_buf = tx_ring->tx_bi;
3240                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3241                 }
3242                 /* unmap skb header data */
3243                 dma_unmap_single(tx_ring->dev,
3244                                  dma_unmap_addr(tx_buf, dma),
3245                                  dma_unmap_len(tx_buf, len),
3246                                  DMA_TO_DEVICE);
3247                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3248                         kfree(tx_buf->raw_buf);
3249
3250                 tx_buf->raw_buf = NULL;
3251                 tx_buf->tx_flags = 0;
3252                 tx_buf->next_to_watch = NULL;
3253                 dma_unmap_len_set(tx_buf, len, 0);
3254                 tx_desc->buffer_addr = 0;
3255                 tx_desc->cmd_type_offset_bsz = 0;
3256
3257                 /* move us past the eop_desc for start of next FD desc */
3258                 tx_buf++;
3259                 tx_desc++;
3260                 i++;
3261                 if (unlikely(!i)) {
3262                         i -= tx_ring->count;
3263                         tx_buf = tx_ring->tx_bi;
3264                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3265                 }
3266
3267                 /* update budget accounting */
3268                 budget--;
3269         } while (likely(budget));
3270
3271         i += tx_ring->count;
3272         tx_ring->next_to_clean = i;
3273
3274         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3275                 i40e_irq_dynamic_enable(vsi,
3276                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3277         }
3278         return budget > 0;
3279 }
3280
3281 /**
3282  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3283  * @irq: interrupt number
3284  * @data: pointer to a q_vector
3285  **/
3286 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3287 {
3288         struct i40e_q_vector *q_vector = data;
3289         struct i40e_vsi *vsi;
3290
3291         if (!q_vector->tx.ring)
3292                 return IRQ_HANDLED;
3293
3294         vsi = q_vector->tx.ring->vsi;
3295         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3296
3297         return IRQ_HANDLED;
3298 }
3299
3300 /**
3301  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3302  * @vsi: the VSI being configured
3303  * @v_idx: vector index
3304  * @qp_idx: queue pair index
3305  **/
3306 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3307 {
3308         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3309         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3310         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3311
3312         tx_ring->q_vector = q_vector;
3313         tx_ring->next = q_vector->tx.ring;
3314         q_vector->tx.ring = tx_ring;
3315         q_vector->tx.count++;
3316
3317         rx_ring->q_vector = q_vector;
3318         rx_ring->next = q_vector->rx.ring;
3319         q_vector->rx.ring = rx_ring;
3320         q_vector->rx.count++;
3321 }
3322
3323 /**
3324  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3325  * @vsi: the VSI being configured
3326  *
3327  * This function maps descriptor rings to the queue-specific vectors
3328  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3329  * one vector per queue pair, but on a constrained vector budget, we
3330  * group the queue pairs as "efficiently" as possible.
3331  **/
3332 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3333 {
3334         int qp_remaining = vsi->num_queue_pairs;
3335         int q_vectors = vsi->num_q_vectors;
3336         int num_ringpairs;
3337         int v_start = 0;
3338         int qp_idx = 0;
3339
3340         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3341          * group them so there are multiple queues per vector.
3342          * It is also important to go through all the vectors available to be
3343          * sure that if we don't use all the vectors, that the remaining vectors
3344          * are cleared. This is especially important when decreasing the
3345          * number of queues in use.
3346          */
3347         for (; v_start < q_vectors; v_start++) {
3348                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3349
3350                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3351
3352                 q_vector->num_ringpairs = num_ringpairs;
3353
3354                 q_vector->rx.count = 0;
3355                 q_vector->tx.count = 0;
3356                 q_vector->rx.ring = NULL;
3357                 q_vector->tx.ring = NULL;
3358
3359                 while (num_ringpairs--) {
3360                         map_vector_to_qp(vsi, v_start, qp_idx);
3361                         qp_idx++;
3362                         qp_remaining--;
3363                 }
3364         }
3365 }
3366
3367 /**
3368  * i40e_vsi_request_irq - Request IRQ from the OS
3369  * @vsi: the VSI being configured
3370  * @basename: name for the vector
3371  **/
3372 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3373 {
3374         struct i40e_pf *pf = vsi->back;
3375         int err;
3376
3377         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3378                 err = i40e_vsi_request_irq_msix(vsi, basename);
3379         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3380                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3381                                   pf->misc_int_name, pf);
3382         else
3383                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3384                                   pf->misc_int_name, pf);
3385
3386         if (err)
3387                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3388
3389         return err;
3390 }
3391
3392 #ifdef CONFIG_NET_POLL_CONTROLLER
3393 /**
3394  * i40e_netpoll - A Polling 'interrupt'handler
3395  * @netdev: network interface device structure
3396  *
3397  * This is used by netconsole to send skbs without having to re-enable
3398  * interrupts.  It's not called while the normal interrupt routine is executing.
3399  **/
3400 #ifdef I40E_FCOE
3401 void i40e_netpoll(struct net_device *netdev)
3402 #else
3403 static void i40e_netpoll(struct net_device *netdev)
3404 #endif
3405 {
3406         struct i40e_netdev_priv *np = netdev_priv(netdev);
3407         struct i40e_vsi *vsi = np->vsi;
3408         struct i40e_pf *pf = vsi->back;
3409         int i;
3410
3411         /* if interface is down do nothing */
3412         if (test_bit(__I40E_DOWN, &vsi->state))
3413                 return;
3414
3415         pf->flags |= I40E_FLAG_IN_NETPOLL;
3416         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3417                 for (i = 0; i < vsi->num_q_vectors; i++)
3418                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3419         } else {
3420                 i40e_intr(pf->pdev->irq, netdev);
3421         }
3422         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3423 }
3424 #endif
3425
3426 /**
3427  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3428  * @pf: the PF being configured
3429  * @pf_q: the PF queue
3430  * @enable: enable or disable state of the queue
3431  *
3432  * This routine will wait for the given Tx queue of the PF to reach the
3433  * enabled or disabled state.
3434  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3435  * multiple retries; else will return 0 in case of success.
3436  **/
3437 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3438 {
3439         int i;
3440         u32 tx_reg;
3441
3442         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3443                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3444                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3445                         break;
3446
3447                 usleep_range(10, 20);
3448         }
3449         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3450                 return -ETIMEDOUT;
3451
3452         return 0;
3453 }
3454
3455 /**
3456  * i40e_vsi_control_tx - Start or stop a VSI's rings
3457  * @vsi: the VSI being configured
3458  * @enable: start or stop the rings
3459  **/
3460 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3461 {
3462         struct i40e_pf *pf = vsi->back;
3463         struct i40e_hw *hw = &pf->hw;
3464         int i, j, pf_q, ret = 0;
3465         u32 tx_reg;
3466
3467         pf_q = vsi->base_queue;
3468         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3469
3470                 /* warn the TX unit of coming changes */
3471                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3472                 if (!enable)
3473                         usleep_range(10, 20);
3474
3475                 for (j = 0; j < 50; j++) {
3476                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3477                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3478                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3479                                 break;
3480                         usleep_range(1000, 2000);
3481                 }
3482                 /* Skip if the queue is already in the requested state */
3483                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3484                         continue;
3485
3486                 /* turn on/off the queue */
3487                 if (enable) {
3488                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3489                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3490                 } else {
3491                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3492                 }
3493
3494                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3495
3496                 /* wait for the change to finish */
3497                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3498                 if (ret) {
3499                         dev_info(&pf->pdev->dev,
3500                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3501                                  __func__, vsi->seid, pf_q,
3502                                  (enable ? "en" : "dis"));
3503                         break;
3504                 }
3505         }
3506
3507         if (hw->revision_id == 0)
3508                 mdelay(50);
3509         return ret;
3510 }
3511
3512 /**
3513  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3514  * @pf: the PF being configured
3515  * @pf_q: the PF queue
3516  * @enable: enable or disable state of the queue
3517  *
3518  * This routine will wait for the given Rx queue of the PF to reach the
3519  * enabled or disabled state.
3520  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3521  * multiple retries; else will return 0 in case of success.
3522  **/
3523 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3524 {
3525         int i;
3526         u32 rx_reg;
3527
3528         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3529                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3530                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3531                         break;
3532
3533                 usleep_range(10, 20);
3534         }
3535         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3536                 return -ETIMEDOUT;
3537
3538         return 0;
3539 }
3540
3541 /**
3542  * i40e_vsi_control_rx - Start or stop a VSI's rings
3543  * @vsi: the VSI being configured
3544  * @enable: start or stop the rings
3545  **/
3546 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3547 {
3548         struct i40e_pf *pf = vsi->back;
3549         struct i40e_hw *hw = &pf->hw;
3550         int i, j, pf_q, ret = 0;
3551         u32 rx_reg;
3552
3553         pf_q = vsi->base_queue;
3554         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3555                 for (j = 0; j < 50; j++) {
3556                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3557                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3558                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3559                                 break;
3560                         usleep_range(1000, 2000);
3561                 }
3562
3563                 /* Skip if the queue is already in the requested state */
3564                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3565                         continue;
3566
3567                 /* turn on/off the queue */
3568                 if (enable)
3569                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3570                 else
3571                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3572                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3573
3574                 /* wait for the change to finish */
3575                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3576                 if (ret) {
3577                         dev_info(&pf->pdev->dev,
3578                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3579                                  __func__, vsi->seid, pf_q,
3580                                  (enable ? "en" : "dis"));
3581                         break;
3582                 }
3583         }
3584
3585         return ret;
3586 }
3587
3588 /**
3589  * i40e_vsi_control_rings - Start or stop a VSI's rings
3590  * @vsi: the VSI being configured
3591  * @enable: start or stop the rings
3592  **/
3593 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3594 {
3595         int ret = 0;
3596
3597         /* do rx first for enable and last for disable */
3598         if (request) {
3599                 ret = i40e_vsi_control_rx(vsi, request);
3600                 if (ret)
3601                         return ret;
3602                 ret = i40e_vsi_control_tx(vsi, request);
3603         } else {
3604                 /* Ignore return value, we need to shutdown whatever we can */
3605                 i40e_vsi_control_tx(vsi, request);
3606                 i40e_vsi_control_rx(vsi, request);
3607         }
3608
3609         return ret;
3610 }
3611
3612 /**
3613  * i40e_vsi_free_irq - Free the irq association with the OS
3614  * @vsi: the VSI being configured
3615  **/
3616 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3617 {
3618         struct i40e_pf *pf = vsi->back;
3619         struct i40e_hw *hw = &pf->hw;
3620         int base = vsi->base_vector;
3621         u32 val, qp;
3622         int i;
3623
3624         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3625                 if (!vsi->q_vectors)
3626                         return;
3627
3628                 if (!vsi->irqs_ready)
3629                         return;
3630
3631                 vsi->irqs_ready = false;
3632                 for (i = 0; i < vsi->num_q_vectors; i++) {
3633                         u16 vector = i + base;
3634
3635                         /* free only the irqs that were actually requested */
3636                         if (!vsi->q_vectors[i] ||
3637                             !vsi->q_vectors[i]->num_ringpairs)
3638                                 continue;
3639
3640                         /* clear the affinity_mask in the IRQ descriptor */
3641                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3642                                               NULL);
3643                         free_irq(pf->msix_entries[vector].vector,
3644                                  vsi->q_vectors[i]);
3645
3646                         /* Tear down the interrupt queue link list
3647                          *
3648                          * We know that they come in pairs and always
3649                          * the Rx first, then the Tx.  To clear the
3650                          * link list, stick the EOL value into the
3651                          * next_q field of the registers.
3652                          */
3653                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3654                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3655                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3656                         val |= I40E_QUEUE_END_OF_LIST
3657                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3658                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3659
3660                         while (qp != I40E_QUEUE_END_OF_LIST) {
3661                                 u32 next;
3662
3663                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3664
3665                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3666                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3667                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3668                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3669
3670                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3671                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3672
3673                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3674
3675                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3676
3677                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3678                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3679
3680                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3681                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3682                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3683                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3684
3685                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3686                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3687
3688                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3689                                 qp = next;
3690                         }
3691                 }
3692         } else {
3693                 free_irq(pf->pdev->irq, pf);
3694
3695                 val = rd32(hw, I40E_PFINT_LNKLST0);
3696                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3697                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3698                 val |= I40E_QUEUE_END_OF_LIST
3699                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3700                 wr32(hw, I40E_PFINT_LNKLST0, val);
3701
3702                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3703                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3704                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3705                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3706                          I40E_QINT_RQCTL_INTEVENT_MASK);
3707
3708                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3709                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3710
3711                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3712
3713                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3714
3715                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3716                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3717                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3718                          I40E_QINT_TQCTL_INTEVENT_MASK);
3719
3720                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3721                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3722
3723                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3724         }
3725 }
3726
3727 /**
3728  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3729  * @vsi: the VSI being configured
3730  * @v_idx: Index of vector to be freed
3731  *
3732  * This function frees the memory allocated to the q_vector.  In addition if
3733  * NAPI is enabled it will delete any references to the NAPI struct prior
3734  * to freeing the q_vector.
3735  **/
3736 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3737 {
3738         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3739         struct i40e_ring *ring;
3740
3741         if (!q_vector)
3742                 return;
3743
3744         /* disassociate q_vector from rings */
3745         i40e_for_each_ring(ring, q_vector->tx)
3746                 ring->q_vector = NULL;
3747
3748         i40e_for_each_ring(ring, q_vector->rx)
3749                 ring->q_vector = NULL;
3750
3751         /* only VSI w/ an associated netdev is set up w/ NAPI */
3752         if (vsi->netdev)
3753                 netif_napi_del(&q_vector->napi);
3754
3755         vsi->q_vectors[v_idx] = NULL;
3756
3757         kfree_rcu(q_vector, rcu);
3758 }
3759
3760 /**
3761  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3762  * @vsi: the VSI being un-configured
3763  *
3764  * This frees the memory allocated to the q_vectors and
3765  * deletes references to the NAPI struct.
3766  **/
3767 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3768 {
3769         int v_idx;
3770
3771         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3772                 i40e_free_q_vector(vsi, v_idx);
3773 }
3774
3775 /**
3776  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3777  * @pf: board private structure
3778  **/
3779 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3780 {
3781         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3782         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3783                 pci_disable_msix(pf->pdev);
3784                 kfree(pf->msix_entries);
3785                 pf->msix_entries = NULL;
3786         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3787                 pci_disable_msi(pf->pdev);
3788         }
3789         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3790 }
3791
3792 /**
3793  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3794  * @pf: board private structure
3795  *
3796  * We go through and clear interrupt specific resources and reset the structure
3797  * to pre-load conditions
3798  **/
3799 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3800 {
3801         int i;
3802
3803         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3804         for (i = 0; i < pf->num_alloc_vsi; i++)
3805                 if (pf->vsi[i])
3806                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3807         i40e_reset_interrupt_capability(pf);
3808 }
3809
3810 /**
3811  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3812  * @vsi: the VSI being configured
3813  **/
3814 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3815 {
3816         int q_idx;
3817
3818         if (!vsi->netdev)
3819                 return;
3820
3821         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3822                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3823 }
3824
3825 /**
3826  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3827  * @vsi: the VSI being configured
3828  **/
3829 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3830 {
3831         int q_idx;
3832
3833         if (!vsi->netdev)
3834                 return;
3835
3836         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3837                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3838 }
3839
3840 /**
3841  * i40e_vsi_close - Shut down a VSI
3842  * @vsi: the vsi to be quelled
3843  **/
3844 static void i40e_vsi_close(struct i40e_vsi *vsi)
3845 {
3846         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3847                 i40e_down(vsi);
3848         i40e_vsi_free_irq(vsi);
3849         i40e_vsi_free_tx_resources(vsi);
3850         i40e_vsi_free_rx_resources(vsi);
3851 }
3852
3853 /**
3854  * i40e_quiesce_vsi - Pause a given VSI
3855  * @vsi: the VSI being paused
3856  **/
3857 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3858 {
3859         if (test_bit(__I40E_DOWN, &vsi->state))
3860                 return;
3861
3862         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3863         if (vsi->netdev && netif_running(vsi->netdev)) {
3864                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3865         } else {
3866                 i40e_vsi_close(vsi);
3867         }
3868 }
3869
3870 /**
3871  * i40e_unquiesce_vsi - Resume a given VSI
3872  * @vsi: the VSI being resumed
3873  **/
3874 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3875 {
3876         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3877                 return;
3878
3879         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3880         if (vsi->netdev && netif_running(vsi->netdev))
3881                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3882         else
3883                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
3884 }
3885
3886 /**
3887  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3888  * @pf: the PF
3889  **/
3890 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3891 {
3892         int v;
3893
3894         for (v = 0; v < pf->num_alloc_vsi; v++) {
3895                 if (pf->vsi[v])
3896                         i40e_quiesce_vsi(pf->vsi[v]);
3897         }
3898 }
3899
3900 /**
3901  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3902  * @pf: the PF
3903  **/
3904 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3905 {
3906         int v;
3907
3908         for (v = 0; v < pf->num_alloc_vsi; v++) {
3909                 if (pf->vsi[v])
3910                         i40e_unquiesce_vsi(pf->vsi[v]);
3911         }
3912 }
3913
3914 /**
3915  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
3916  * @dcbcfg: the corresponding DCBx configuration structure
3917  *
3918  * Return the number of TCs from given DCBx configuration
3919  **/
3920 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
3921 {
3922         u8 num_tc = 0;
3923         int i;
3924
3925         /* Scan the ETS Config Priority Table to find
3926          * traffic class enabled for a given priority
3927          * and use the traffic class index to get the
3928          * number of traffic classes enabled
3929          */
3930         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3931                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
3932                         num_tc = dcbcfg->etscfg.prioritytable[i];
3933         }
3934
3935         /* Traffic class index starts from zero so
3936          * increment to return the actual count
3937          */
3938         return num_tc + 1;
3939 }
3940
3941 /**
3942  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
3943  * @dcbcfg: the corresponding DCBx configuration structure
3944  *
3945  * Query the current DCB configuration and return the number of
3946  * traffic classes enabled from the given DCBX config
3947  **/
3948 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
3949 {
3950         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
3951         u8 enabled_tc = 1;
3952         u8 i;
3953
3954         for (i = 0; i < num_tc; i++)
3955                 enabled_tc |= 1 << i;
3956
3957         return enabled_tc;
3958 }
3959
3960 /**
3961  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
3962  * @pf: PF being queried
3963  *
3964  * Return number of traffic classes enabled for the given PF
3965  **/
3966 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
3967 {
3968         struct i40e_hw *hw = &pf->hw;
3969         u8 i, enabled_tc;
3970         u8 num_tc = 0;
3971         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3972
3973         /* If DCB is not enabled then always in single TC */
3974         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3975                 return 1;
3976
3977         /* MFP mode return count of enabled TCs for this PF */
3978         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3979                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3980                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3981                         if (enabled_tc & (1 << i))
3982                                 num_tc++;
3983                 }
3984                 return num_tc;
3985         }
3986
3987         /* SFP mode will be enabled for all TCs on port */
3988         return i40e_dcb_get_num_tc(dcbcfg);
3989 }
3990
3991 /**
3992  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
3993  * @pf: PF being queried
3994  *
3995  * Return a bitmap for first enabled traffic class for this PF.
3996  **/
3997 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
3998 {
3999         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4000         u8 i = 0;
4001
4002         if (!enabled_tc)
4003                 return 0x1; /* TC0 */
4004
4005         /* Find the first enabled TC */
4006         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4007                 if (enabled_tc & (1 << i))
4008                         break;
4009         }
4010
4011         return 1 << i;
4012 }
4013
4014 /**
4015  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4016  * @pf: PF being queried
4017  *
4018  * Return a bitmap for enabled traffic classes for this PF.
4019  **/
4020 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4021 {
4022         /* If DCB is not enabled for this PF then just return default TC */
4023         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4024                 return i40e_pf_get_default_tc(pf);
4025
4026         /* MFP mode will have enabled TCs set by FW */
4027         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4028                 return pf->hw.func_caps.enabled_tcmap;
4029
4030         /* SFP mode we want PF to be enabled for all TCs */
4031         return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4032 }
4033
4034 /**
4035  * i40e_vsi_get_bw_info - Query VSI BW Information
4036  * @vsi: the VSI being queried
4037  *
4038  * Returns 0 on success, negative value on failure
4039  **/
4040 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4041 {
4042         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4043         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4044         struct i40e_pf *pf = vsi->back;
4045         struct i40e_hw *hw = &pf->hw;
4046         i40e_status aq_ret;
4047         u32 tc_bw_max;
4048         int i;
4049
4050         /* Get the VSI level BW configuration */
4051         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4052         if (aq_ret) {
4053                 dev_info(&pf->pdev->dev,
4054                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
4055                          aq_ret, pf->hw.aq.asq_last_status);
4056                 return -EINVAL;
4057         }
4058
4059         /* Get the VSI level BW configuration per TC */
4060         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4061                                                   NULL);
4062         if (aq_ret) {
4063                 dev_info(&pf->pdev->dev,
4064                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
4065                          aq_ret, pf->hw.aq.asq_last_status);
4066                 return -EINVAL;
4067         }
4068
4069         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4070                 dev_info(&pf->pdev->dev,
4071                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4072                          bw_config.tc_valid_bits,
4073                          bw_ets_config.tc_valid_bits);
4074                 /* Still continuing */
4075         }
4076
4077         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4078         vsi->bw_max_quanta = bw_config.max_bw;
4079         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4080                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4081         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4082                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4083                 vsi->bw_ets_limit_credits[i] =
4084                                         le16_to_cpu(bw_ets_config.credits[i]);
4085                 /* 3 bits out of 4 for each TC */
4086                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4087         }
4088
4089         return 0;
4090 }
4091
4092 /**
4093  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4094  * @vsi: the VSI being configured
4095  * @enabled_tc: TC bitmap
4096  * @bw_credits: BW shared credits per TC
4097  *
4098  * Returns 0 on success, negative value on failure
4099  **/
4100 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4101                                        u8 *bw_share)
4102 {
4103         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4104         i40e_status aq_ret;
4105         int i;
4106
4107         bw_data.tc_valid_bits = enabled_tc;
4108         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4109                 bw_data.tc_bw_credits[i] = bw_share[i];
4110
4111         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4112                                           NULL);
4113         if (aq_ret) {
4114                 dev_info(&vsi->back->pdev->dev,
4115                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4116                          vsi->back->hw.aq.asq_last_status);
4117                 return -EINVAL;
4118         }
4119
4120         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4121                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4122
4123         return 0;
4124 }
4125
4126 /**
4127  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4128  * @vsi: the VSI being configured
4129  * @enabled_tc: TC map to be enabled
4130  *
4131  **/
4132 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4133 {
4134         struct net_device *netdev = vsi->netdev;
4135         struct i40e_pf *pf = vsi->back;
4136         struct i40e_hw *hw = &pf->hw;
4137         u8 netdev_tc = 0;
4138         int i;
4139         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4140
4141         if (!netdev)
4142                 return;
4143
4144         if (!enabled_tc) {
4145                 netdev_reset_tc(netdev);
4146                 return;
4147         }
4148
4149         /* Set up actual enabled TCs on the VSI */
4150         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4151                 return;
4152
4153         /* set per TC queues for the VSI */
4154         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4155                 /* Only set TC queues for enabled tcs
4156                  *
4157                  * e.g. For a VSI that has TC0 and TC3 enabled the
4158                  * enabled_tc bitmap would be 0x00001001; the driver
4159                  * will set the numtc for netdev as 2 that will be
4160                  * referenced by the netdev layer as TC 0 and 1.
4161                  */
4162                 if (vsi->tc_config.enabled_tc & (1 << i))
4163                         netdev_set_tc_queue(netdev,
4164                                         vsi->tc_config.tc_info[i].netdev_tc,
4165                                         vsi->tc_config.tc_info[i].qcount,
4166                                         vsi->tc_config.tc_info[i].qoffset);
4167         }
4168
4169         /* Assign UP2TC map for the VSI */
4170         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4171                 /* Get the actual TC# for the UP */
4172                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4173                 /* Get the mapped netdev TC# for the UP */
4174                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4175                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4176         }
4177 }
4178
4179 /**
4180  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4181  * @vsi: the VSI being configured
4182  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4183  **/
4184 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4185                                       struct i40e_vsi_context *ctxt)
4186 {
4187         /* copy just the sections touched not the entire info
4188          * since not all sections are valid as returned by
4189          * update vsi params
4190          */
4191         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4192         memcpy(&vsi->info.queue_mapping,
4193                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4194         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4195                sizeof(vsi->info.tc_mapping));
4196 }
4197
4198 /**
4199  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4200  * @vsi: VSI to be configured
4201  * @enabled_tc: TC bitmap
4202  *
4203  * This configures a particular VSI for TCs that are mapped to the
4204  * given TC bitmap. It uses default bandwidth share for TCs across
4205  * VSIs to configure TC for a particular VSI.
4206  *
4207  * NOTE:
4208  * It is expected that the VSI queues have been quisced before calling
4209  * this function.
4210  **/
4211 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4212 {
4213         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4214         struct i40e_vsi_context ctxt;
4215         int ret = 0;
4216         int i;
4217
4218         /* Check if enabled_tc is same as existing or new TCs */
4219         if (vsi->tc_config.enabled_tc == enabled_tc)
4220                 return ret;
4221
4222         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4223         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4224                 if (enabled_tc & (1 << i))
4225                         bw_share[i] = 1;
4226         }
4227
4228         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4229         if (ret) {
4230                 dev_info(&vsi->back->pdev->dev,
4231                          "Failed configuring TC map %d for VSI %d\n",
4232                          enabled_tc, vsi->seid);
4233                 goto out;
4234         }
4235
4236         /* Update Queue Pairs Mapping for currently enabled UPs */
4237         ctxt.seid = vsi->seid;
4238         ctxt.pf_num = vsi->back->hw.pf_id;
4239         ctxt.vf_num = 0;
4240         ctxt.uplink_seid = vsi->uplink_seid;
4241         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
4242         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4243
4244         /* Update the VSI after updating the VSI queue-mapping information */
4245         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4246         if (ret) {
4247                 dev_info(&vsi->back->pdev->dev,
4248                          "update vsi failed, aq_err=%d\n",
4249                          vsi->back->hw.aq.asq_last_status);
4250                 goto out;
4251         }
4252         /* update the local VSI info with updated queue map */
4253         i40e_vsi_update_queue_map(vsi, &ctxt);
4254         vsi->info.valid_sections = 0;
4255
4256         /* Update current VSI BW information */
4257         ret = i40e_vsi_get_bw_info(vsi);
4258         if (ret) {
4259                 dev_info(&vsi->back->pdev->dev,
4260                          "Failed updating vsi bw info, aq_err=%d\n",
4261                          vsi->back->hw.aq.asq_last_status);
4262                 goto out;
4263         }
4264
4265         /* Update the netdev TC setup */
4266         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4267 out:
4268         return ret;
4269 }
4270
4271 /**
4272  * i40e_veb_config_tc - Configure TCs for given VEB
4273  * @veb: given VEB
4274  * @enabled_tc: TC bitmap
4275  *
4276  * Configures given TC bitmap for VEB (switching) element
4277  **/
4278 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4279 {
4280         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4281         struct i40e_pf *pf = veb->pf;
4282         int ret = 0;
4283         int i;
4284
4285         /* No TCs or already enabled TCs just return */
4286         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4287                 return ret;
4288
4289         bw_data.tc_valid_bits = enabled_tc;
4290         /* bw_data.absolute_credits is not set (relative) */
4291
4292         /* Enable ETS TCs with equal BW Share for now */
4293         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4294                 if (enabled_tc & (1 << i))
4295                         bw_data.tc_bw_share_credits[i] = 1;
4296         }
4297
4298         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4299                                                    &bw_data, NULL);
4300         if (ret) {
4301                 dev_info(&pf->pdev->dev,
4302                          "veb bw config failed, aq_err=%d\n",
4303                          pf->hw.aq.asq_last_status);
4304                 goto out;
4305         }
4306
4307         /* Update the BW information */
4308         ret = i40e_veb_get_bw_info(veb);
4309         if (ret) {
4310                 dev_info(&pf->pdev->dev,
4311                          "Failed getting veb bw config, aq_err=%d\n",
4312                          pf->hw.aq.asq_last_status);
4313         }
4314
4315 out:
4316         return ret;
4317 }
4318
4319 #ifdef CONFIG_I40E_DCB
4320 /**
4321  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4322  * @pf: PF struct
4323  *
4324  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4325  * the caller would've quiesce all the VSIs before calling
4326  * this function
4327  **/
4328 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4329 {
4330         u8 tc_map = 0;
4331         int ret;
4332         u8 v;
4333
4334         /* Enable the TCs available on PF to all VEBs */
4335         tc_map = i40e_pf_get_tc_map(pf);
4336         for (v = 0; v < I40E_MAX_VEB; v++) {
4337                 if (!pf->veb[v])
4338                         continue;
4339                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4340                 if (ret) {
4341                         dev_info(&pf->pdev->dev,
4342                                  "Failed configuring TC for VEB seid=%d\n",
4343                                  pf->veb[v]->seid);
4344                         /* Will try to configure as many components */
4345                 }
4346         }
4347
4348         /* Update each VSI */
4349         for (v = 0; v < pf->num_alloc_vsi; v++) {
4350                 if (!pf->vsi[v])
4351                         continue;
4352
4353                 /* - Enable all TCs for the LAN VSI
4354 #ifdef I40E_FCOE
4355                  * - For FCoE VSI only enable the TC configured
4356                  *   as per the APP TLV
4357 #endif
4358                  * - For all others keep them at TC0 for now
4359                  */
4360                 if (v == pf->lan_vsi)
4361                         tc_map = i40e_pf_get_tc_map(pf);
4362                 else
4363                         tc_map = i40e_pf_get_default_tc(pf);
4364 #ifdef I40E_FCOE
4365                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4366                         tc_map = i40e_get_fcoe_tc_map(pf);
4367 #endif /* #ifdef I40E_FCOE */
4368
4369                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4370                 if (ret) {
4371                         dev_info(&pf->pdev->dev,
4372                                  "Failed configuring TC for VSI seid=%d\n",
4373                                  pf->vsi[v]->seid);
4374                         /* Will try to configure as many components */
4375                 } else {
4376                         /* Re-configure VSI vectors based on updated TC map */
4377                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4378                         if (pf->vsi[v]->netdev)
4379                                 i40e_dcbnl_set_all(pf->vsi[v]);
4380                 }
4381         }
4382 }
4383
4384 /**
4385  * i40e_resume_port_tx - Resume port Tx
4386  * @pf: PF struct
4387  *
4388  * Resume a port's Tx and issue a PF reset in case of failure to
4389  * resume.
4390  **/
4391 static int i40e_resume_port_tx(struct i40e_pf *pf)
4392 {
4393         struct i40e_hw *hw = &pf->hw;
4394         int ret;
4395
4396         ret = i40e_aq_resume_port_tx(hw, NULL);
4397         if (ret) {
4398                 dev_info(&pf->pdev->dev,
4399                          "AQ command Resume Port Tx failed = %d\n",
4400                           pf->hw.aq.asq_last_status);
4401                 /* Schedule PF reset to recover */
4402                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4403                 i40e_service_event_schedule(pf);
4404         }
4405
4406         return ret;
4407 }
4408
4409 /**
4410  * i40e_init_pf_dcb - Initialize DCB configuration
4411  * @pf: PF being configured
4412  *
4413  * Query the current DCB configuration and cache it
4414  * in the hardware structure
4415  **/
4416 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4417 {
4418         struct i40e_hw *hw = &pf->hw;
4419         int err = 0;
4420
4421         if (pf->hw.func_caps.npar_enable)
4422                 goto out;
4423
4424         /* Get the initial DCB configuration */
4425         err = i40e_init_dcb(hw);
4426         if (!err) {
4427                 /* Device/Function is not DCBX capable */
4428                 if ((!hw->func_caps.dcb) ||
4429                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4430                         dev_info(&pf->pdev->dev,
4431                                  "DCBX offload is not supported or is disabled for this PF.\n");
4432
4433                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4434                                 goto out;
4435
4436                 } else {
4437                         /* When status is not DISABLED then DCBX in FW */
4438                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4439                                        DCB_CAP_DCBX_VER_IEEE;
4440
4441                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4442                         /* Enable DCB tagging only when more than one TC */
4443                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4444                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4445                         dev_dbg(&pf->pdev->dev,
4446                                 "DCBX offload is supported for this PF.\n");
4447                 }
4448         } else {
4449                 dev_info(&pf->pdev->dev, "AQ Querying DCB configuration failed: %d\n",
4450                          pf->hw.aq.asq_last_status);
4451         }
4452
4453 out:
4454         return err;
4455 }
4456 #endif /* CONFIG_I40E_DCB */
4457 #define SPEED_SIZE 14
4458 #define FC_SIZE 8
4459 /**
4460  * i40e_print_link_message - print link up or down
4461  * @vsi: the VSI for which link needs a message
4462  */
4463 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4464 {
4465         char speed[SPEED_SIZE] = "Unknown";
4466         char fc[FC_SIZE] = "RX/TX";
4467
4468         if (!isup) {
4469                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4470                 return;
4471         }
4472
4473         switch (vsi->back->hw.phy.link_info.link_speed) {
4474         case I40E_LINK_SPEED_40GB:
4475                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4476                 break;
4477         case I40E_LINK_SPEED_10GB:
4478                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4479                 break;
4480         case I40E_LINK_SPEED_1GB:
4481                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4482                 break;
4483         case I40E_LINK_SPEED_100MB:
4484                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4485                 break;
4486         default:
4487                 break;
4488         }
4489
4490         switch (vsi->back->hw.fc.current_mode) {
4491         case I40E_FC_FULL:
4492                 strlcpy(fc, "RX/TX", FC_SIZE);
4493                 break;
4494         case I40E_FC_TX_PAUSE:
4495                 strlcpy(fc, "TX", FC_SIZE);
4496                 break;
4497         case I40E_FC_RX_PAUSE:
4498                 strlcpy(fc, "RX", FC_SIZE);
4499                 break;
4500         default:
4501                 strlcpy(fc, "None", FC_SIZE);
4502                 break;
4503         }
4504
4505         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4506                     speed, fc);
4507 }
4508
4509 /**
4510  * i40e_up_complete - Finish the last steps of bringing up a connection
4511  * @vsi: the VSI being configured
4512  **/
4513 static int i40e_up_complete(struct i40e_vsi *vsi)
4514 {
4515         struct i40e_pf *pf = vsi->back;
4516         int err;
4517
4518         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4519                 i40e_vsi_configure_msix(vsi);
4520         else
4521                 i40e_configure_msi_and_legacy(vsi);
4522
4523         /* start rings */
4524         err = i40e_vsi_control_rings(vsi, true);
4525         if (err)
4526                 return err;
4527
4528         clear_bit(__I40E_DOWN, &vsi->state);
4529         i40e_napi_enable_all(vsi);
4530         i40e_vsi_enable_irq(vsi);
4531
4532         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4533             (vsi->netdev)) {
4534                 i40e_print_link_message(vsi, true);
4535                 netif_tx_start_all_queues(vsi->netdev);
4536                 netif_carrier_on(vsi->netdev);
4537         } else if (vsi->netdev) {
4538                 i40e_print_link_message(vsi, false);
4539                 /* need to check for qualified module here*/
4540                 if ((pf->hw.phy.link_info.link_info &
4541                         I40E_AQ_MEDIA_AVAILABLE) &&
4542                     (!(pf->hw.phy.link_info.an_info &
4543                         I40E_AQ_QUALIFIED_MODULE)))
4544                         netdev_err(vsi->netdev,
4545                                    "the driver failed to link because an unqualified module was detected.");
4546         }
4547
4548         /* replay FDIR SB filters */
4549         if (vsi->type == I40E_VSI_FDIR) {
4550                 /* reset fd counters */
4551                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4552                 if (pf->fd_tcp_rule > 0) {
4553                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4554                         dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4555                         pf->fd_tcp_rule = 0;
4556                 }
4557                 i40e_fdir_filter_restore(vsi);
4558         }
4559         i40e_service_event_schedule(pf);
4560
4561         return 0;
4562 }
4563
4564 /**
4565  * i40e_vsi_reinit_locked - Reset the VSI
4566  * @vsi: the VSI being configured
4567  *
4568  * Rebuild the ring structs after some configuration
4569  * has changed, e.g. MTU size.
4570  **/
4571 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4572 {
4573         struct i40e_pf *pf = vsi->back;
4574
4575         WARN_ON(in_interrupt());
4576         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4577                 usleep_range(1000, 2000);
4578         i40e_down(vsi);
4579
4580         /* Give a VF some time to respond to the reset.  The
4581          * two second wait is based upon the watchdog cycle in
4582          * the VF driver.
4583          */
4584         if (vsi->type == I40E_VSI_SRIOV)
4585                 msleep(2000);
4586         i40e_up(vsi);
4587         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4588 }
4589
4590 /**
4591  * i40e_up - Bring the connection back up after being down
4592  * @vsi: the VSI being configured
4593  **/
4594 int i40e_up(struct i40e_vsi *vsi)
4595 {
4596         int err;
4597
4598         err = i40e_vsi_configure(vsi);
4599         if (!err)
4600                 err = i40e_up_complete(vsi);
4601
4602         return err;
4603 }
4604
4605 /**
4606  * i40e_down - Shutdown the connection processing
4607  * @vsi: the VSI being stopped
4608  **/
4609 void i40e_down(struct i40e_vsi *vsi)
4610 {
4611         int i;
4612
4613         /* It is assumed that the caller of this function
4614          * sets the vsi->state __I40E_DOWN bit.
4615          */
4616         if (vsi->netdev) {
4617                 netif_carrier_off(vsi->netdev);
4618                 netif_tx_disable(vsi->netdev);
4619         }
4620         i40e_vsi_disable_irq(vsi);
4621         i40e_vsi_control_rings(vsi, false);
4622         i40e_napi_disable_all(vsi);
4623
4624         for (i = 0; i < vsi->num_queue_pairs; i++) {
4625                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4626                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4627         }
4628 }
4629
4630 /**
4631  * i40e_setup_tc - configure multiple traffic classes
4632  * @netdev: net device to configure
4633  * @tc: number of traffic classes to enable
4634  **/
4635 #ifdef I40E_FCOE
4636 int i40e_setup_tc(struct net_device *netdev, u8 tc)
4637 #else
4638 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4639 #endif
4640 {
4641         struct i40e_netdev_priv *np = netdev_priv(netdev);
4642         struct i40e_vsi *vsi = np->vsi;
4643         struct i40e_pf *pf = vsi->back;
4644         u8 enabled_tc = 0;
4645         int ret = -EINVAL;
4646         int i;
4647
4648         /* Check if DCB enabled to continue */
4649         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4650                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4651                 goto exit;
4652         }
4653
4654         /* Check if MFP enabled */
4655         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4656                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4657                 goto exit;
4658         }
4659
4660         /* Check whether tc count is within enabled limit */
4661         if (tc > i40e_pf_get_num_tc(pf)) {
4662                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4663                 goto exit;
4664         }
4665
4666         /* Generate TC map for number of tc requested */
4667         for (i = 0; i < tc; i++)
4668                 enabled_tc |= (1 << i);
4669
4670         /* Requesting same TC configuration as already enabled */
4671         if (enabled_tc == vsi->tc_config.enabled_tc)
4672                 return 0;
4673
4674         /* Quiesce VSI queues */
4675         i40e_quiesce_vsi(vsi);
4676
4677         /* Configure VSI for enabled TCs */
4678         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4679         if (ret) {
4680                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4681                             vsi->seid);
4682                 goto exit;
4683         }
4684
4685         /* Unquiesce VSI */
4686         i40e_unquiesce_vsi(vsi);
4687
4688 exit:
4689         return ret;
4690 }
4691
4692 /**
4693  * i40e_open - Called when a network interface is made active
4694  * @netdev: network interface device structure
4695  *
4696  * The open entry point is called when a network interface is made
4697  * active by the system (IFF_UP).  At this point all resources needed
4698  * for transmit and receive operations are allocated, the interrupt
4699  * handler is registered with the OS, the netdev watchdog subtask is
4700  * enabled, and the stack is notified that the interface is ready.
4701  *
4702  * Returns 0 on success, negative value on failure
4703  **/
4704 #ifdef I40E_FCOE
4705 int i40e_open(struct net_device *netdev)
4706 #else
4707 static int i40e_open(struct net_device *netdev)
4708 #endif
4709 {
4710         struct i40e_netdev_priv *np = netdev_priv(netdev);
4711         struct i40e_vsi *vsi = np->vsi;
4712         struct i40e_pf *pf = vsi->back;
4713         int err;
4714
4715         /* disallow open during test or if eeprom is broken */
4716         if (test_bit(__I40E_TESTING, &pf->state) ||
4717             test_bit(__I40E_BAD_EEPROM, &pf->state))
4718                 return -EBUSY;
4719
4720         netif_carrier_off(netdev);
4721
4722         err = i40e_vsi_open(vsi);
4723         if (err)
4724                 return err;
4725
4726         /* configure global TSO hardware offload settings */
4727         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4728                                                        TCP_FLAG_FIN) >> 16);
4729         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4730                                                        TCP_FLAG_FIN |
4731                                                        TCP_FLAG_CWR) >> 16);
4732         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4733
4734 #ifdef CONFIG_I40E_VXLAN
4735         vxlan_get_rx_port(netdev);
4736 #endif
4737
4738         return 0;
4739 }
4740
4741 /**
4742  * i40e_vsi_open -
4743  * @vsi: the VSI to open
4744  *
4745  * Finish initialization of the VSI.
4746  *
4747  * Returns 0 on success, negative value on failure
4748  **/
4749 int i40e_vsi_open(struct i40e_vsi *vsi)
4750 {
4751         struct i40e_pf *pf = vsi->back;
4752         char int_name[IFNAMSIZ];
4753         int err;
4754
4755         /* allocate descriptors */
4756         err = i40e_vsi_setup_tx_resources(vsi);
4757         if (err)
4758                 goto err_setup_tx;
4759         err = i40e_vsi_setup_rx_resources(vsi);
4760         if (err)
4761                 goto err_setup_rx;
4762
4763         err = i40e_vsi_configure(vsi);
4764         if (err)
4765                 goto err_setup_rx;
4766
4767         if (vsi->netdev) {
4768                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4769                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4770                 err = i40e_vsi_request_irq(vsi, int_name);
4771                 if (err)
4772                         goto err_setup_rx;
4773
4774                 /* Notify the stack of the actual queue counts. */
4775                 err = netif_set_real_num_tx_queues(vsi->netdev,
4776                                                    vsi->num_queue_pairs);
4777                 if (err)
4778                         goto err_set_queues;
4779
4780                 err = netif_set_real_num_rx_queues(vsi->netdev,
4781                                                    vsi->num_queue_pairs);
4782                 if (err)
4783                         goto err_set_queues;
4784
4785         } else if (vsi->type == I40E_VSI_FDIR) {
4786                 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
4787                          dev_driver_string(&pf->pdev->dev));
4788                 err = i40e_vsi_request_irq(vsi, int_name);
4789         } else {
4790                 err = -EINVAL;
4791                 goto err_setup_rx;
4792         }
4793
4794         err = i40e_up_complete(vsi);
4795         if (err)
4796                 goto err_up_complete;
4797
4798         return 0;
4799
4800 err_up_complete:
4801         i40e_down(vsi);
4802 err_set_queues:
4803         i40e_vsi_free_irq(vsi);
4804 err_setup_rx:
4805         i40e_vsi_free_rx_resources(vsi);
4806 err_setup_tx:
4807         i40e_vsi_free_tx_resources(vsi);
4808         if (vsi == pf->vsi[pf->lan_vsi])
4809                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4810
4811         return err;
4812 }
4813
4814 /**
4815  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4816  * @pf: Pointer to pf
4817  *
4818  * This function destroys the hlist where all the Flow Director
4819  * filters were saved.
4820  **/
4821 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4822 {
4823         struct i40e_fdir_filter *filter;
4824         struct hlist_node *node2;
4825
4826         hlist_for_each_entry_safe(filter, node2,
4827                                   &pf->fdir_filter_list, fdir_node) {
4828                 hlist_del(&filter->fdir_node);
4829                 kfree(filter);
4830         }
4831         pf->fdir_pf_active_filters = 0;
4832 }
4833
4834 /**
4835  * i40e_close - Disables a network interface
4836  * @netdev: network interface device structure
4837  *
4838  * The close entry point is called when an interface is de-activated
4839  * by the OS.  The hardware is still under the driver's control, but
4840  * this netdev interface is disabled.
4841  *
4842  * Returns 0, this is not allowed to fail
4843  **/
4844 #ifdef I40E_FCOE
4845 int i40e_close(struct net_device *netdev)
4846 #else
4847 static int i40e_close(struct net_device *netdev)
4848 #endif
4849 {
4850         struct i40e_netdev_priv *np = netdev_priv(netdev);
4851         struct i40e_vsi *vsi = np->vsi;
4852
4853         i40e_vsi_close(vsi);
4854
4855         return 0;
4856 }
4857
4858 /**
4859  * i40e_do_reset - Start a PF or Core Reset sequence
4860  * @pf: board private structure
4861  * @reset_flags: which reset is requested
4862  *
4863  * The essential difference in resets is that the PF Reset
4864  * doesn't clear the packet buffers, doesn't reset the PE
4865  * firmware, and doesn't bother the other PFs on the chip.
4866  **/
4867 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
4868 {
4869         u32 val;
4870
4871         WARN_ON(in_interrupt());
4872
4873         if (i40e_check_asq_alive(&pf->hw))
4874                 i40e_vc_notify_reset(pf);
4875
4876         /* do the biggest reset indicated */
4877         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
4878
4879                 /* Request a Global Reset
4880                  *
4881                  * This will start the chip's countdown to the actual full
4882                  * chip reset event, and a warning interrupt to be sent
4883                  * to all PFs, including the requestor.  Our handler
4884                  * for the warning interrupt will deal with the shutdown
4885                  * and recovery of the switch setup.
4886                  */
4887                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
4888                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4889                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
4890                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4891
4892         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
4893
4894                 /* Request a Core Reset
4895                  *
4896                  * Same as Global Reset, except does *not* include the MAC/PHY
4897                  */
4898                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
4899                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4900                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
4901                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4902                 i40e_flush(&pf->hw);
4903
4904         } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
4905
4906                 /* Request a Firmware Reset
4907                  *
4908                  * Same as Global reset, plus restarting the
4909                  * embedded firmware engine.
4910                  */
4911                 /* enable EMP Reset */
4912                 val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
4913                 val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
4914                 wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
4915
4916                 /* force the reset */
4917                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4918                 val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
4919                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4920                 i40e_flush(&pf->hw);
4921
4922         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
4923
4924                 /* Request a PF Reset
4925                  *
4926                  * Resets only the PF-specific registers
4927                  *
4928                  * This goes directly to the tear-down and rebuild of
4929                  * the switch, since we need to do all the recovery as
4930                  * for the Core Reset.
4931                  */
4932                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
4933                 i40e_handle_reset_warning(pf);
4934
4935         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
4936                 int v;
4937
4938                 /* Find the VSI(s) that requested a re-init */
4939                 dev_info(&pf->pdev->dev,
4940                          "VSI reinit requested\n");
4941                 for (v = 0; v < pf->num_alloc_vsi; v++) {
4942                         struct i40e_vsi *vsi = pf->vsi[v];
4943                         if (vsi != NULL &&
4944                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
4945                                 i40e_vsi_reinit_locked(pf->vsi[v]);
4946                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
4947                         }
4948                 }
4949
4950                 /* no further action needed, so return now */
4951                 return;
4952         } else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
4953                 int v;
4954
4955                 /* Find the VSI(s) that needs to be brought down */
4956                 dev_info(&pf->pdev->dev, "VSI down requested\n");
4957                 for (v = 0; v < pf->num_alloc_vsi; v++) {
4958                         struct i40e_vsi *vsi = pf->vsi[v];
4959                         if (vsi != NULL &&
4960                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
4961                                 set_bit(__I40E_DOWN, &vsi->state);
4962                                 i40e_down(vsi);
4963                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
4964                         }
4965                 }
4966
4967                 /* no further action needed, so return now */
4968                 return;
4969         } else {
4970                 dev_info(&pf->pdev->dev,
4971                          "bad reset request 0x%08x\n", reset_flags);
4972                 return;
4973         }
4974 }
4975
4976 #ifdef CONFIG_I40E_DCB
4977 /**
4978  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
4979  * @pf: board private structure
4980  * @old_cfg: current DCB config
4981  * @new_cfg: new DCB config
4982  **/
4983 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
4984                             struct i40e_dcbx_config *old_cfg,
4985                             struct i40e_dcbx_config *new_cfg)
4986 {
4987         bool need_reconfig = false;
4988
4989         /* Check if ETS configuration has changed */
4990         if (memcmp(&new_cfg->etscfg,
4991                    &old_cfg->etscfg,
4992                    sizeof(new_cfg->etscfg))) {
4993                 /* If Priority Table has changed reconfig is needed */
4994                 if (memcmp(&new_cfg->etscfg.prioritytable,
4995                            &old_cfg->etscfg.prioritytable,
4996                            sizeof(new_cfg->etscfg.prioritytable))) {
4997                         need_reconfig = true;
4998                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
4999                 }
5000
5001                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5002                            &old_cfg->etscfg.tcbwtable,
5003                            sizeof(new_cfg->etscfg.tcbwtable)))
5004                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5005
5006                 if (memcmp(&new_cfg->etscfg.tsatable,
5007                            &old_cfg->etscfg.tsatable,
5008                            sizeof(new_cfg->etscfg.tsatable)))
5009                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5010         }
5011
5012         /* Check if PFC configuration has changed */
5013         if (memcmp(&new_cfg->pfc,
5014                    &old_cfg->pfc,
5015                    sizeof(new_cfg->pfc))) {
5016                 need_reconfig = true;
5017                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5018         }
5019
5020         /* Check if APP Table has changed */
5021         if (memcmp(&new_cfg->app,
5022                    &old_cfg->app,
5023                    sizeof(new_cfg->app))) {
5024                 need_reconfig = true;
5025                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5026         }
5027
5028         dev_dbg(&pf->pdev->dev, "%s: need_reconfig=%d\n", __func__,
5029                 need_reconfig);
5030         return need_reconfig;
5031 }
5032
5033 /**
5034  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5035  * @pf: board private structure
5036  * @e: event info posted on ARQ
5037  **/
5038 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5039                                   struct i40e_arq_event_info *e)
5040 {
5041         struct i40e_aqc_lldp_get_mib *mib =
5042                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5043         struct i40e_hw *hw = &pf->hw;
5044         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
5045         struct i40e_dcbx_config tmp_dcbx_cfg;
5046         bool need_reconfig = false;
5047         int ret = 0;
5048         u8 type;
5049
5050         /* Not DCB capable or capability disabled */
5051         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5052                 return ret;
5053
5054         /* Ignore if event is not for Nearest Bridge */
5055         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5056                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5057         dev_dbg(&pf->pdev->dev,
5058                 "%s: LLDP event mib bridge type 0x%x\n", __func__, type);
5059         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5060                 return ret;
5061
5062         /* Check MIB Type and return if event for Remote MIB update */
5063         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5064         dev_dbg(&pf->pdev->dev,
5065                 "%s: LLDP event mib type %s\n", __func__,
5066                 type ? "remote" : "local");
5067         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5068                 /* Update the remote cached instance and return */
5069                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5070                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5071                                 &hw->remote_dcbx_config);
5072                 goto exit;
5073         }
5074
5075         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
5076         /* Store the old configuration */
5077         tmp_dcbx_cfg = *dcbx_cfg;
5078
5079         /* Get updated DCBX data from firmware */
5080         ret = i40e_get_dcb_config(&pf->hw);
5081         if (ret) {
5082                 dev_info(&pf->pdev->dev, "Failed querying DCB configuration data from firmware.\n");
5083                 goto exit;
5084         }
5085
5086         /* No change detected in DCBX configs */
5087         if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
5088                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5089                 goto exit;
5090         }
5091
5092         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg, dcbx_cfg);
5093
5094         i40e_dcbnl_flush_apps(pf, dcbx_cfg);
5095
5096         if (!need_reconfig)
5097                 goto exit;
5098
5099         /* Enable DCB tagging only when more than one TC */
5100         if (i40e_dcb_get_num_tc(dcbx_cfg) > 1)
5101                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5102         else
5103                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5104
5105         /* Reconfiguration needed quiesce all VSIs */
5106         i40e_pf_quiesce_all_vsi(pf);
5107
5108         /* Changes in configuration update VEB/VSI */
5109         i40e_dcb_reconfigure(pf);
5110
5111         ret = i40e_resume_port_tx(pf);
5112
5113         /* In case of error no point in resuming VSIs */
5114         if (!ret)
5115                 i40e_pf_unquiesce_all_vsi(pf);
5116 exit:
5117         return ret;
5118 }
5119 #endif /* CONFIG_I40E_DCB */
5120
5121 /**
5122  * i40e_do_reset_safe - Protected reset path for userland calls.
5123  * @pf: board private structure
5124  * @reset_flags: which reset is requested
5125  *
5126  **/
5127 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5128 {
5129         rtnl_lock();
5130         i40e_do_reset(pf, reset_flags);
5131         rtnl_unlock();
5132 }
5133
5134 /**
5135  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5136  * @pf: board private structure
5137  * @e: event info posted on ARQ
5138  *
5139  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5140  * and VF queues
5141  **/
5142 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5143                                            struct i40e_arq_event_info *e)
5144 {
5145         struct i40e_aqc_lan_overflow *data =
5146                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5147         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5148         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5149         struct i40e_hw *hw = &pf->hw;
5150         struct i40e_vf *vf;
5151         u16 vf_id;
5152
5153         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5154                 queue, qtx_ctl);
5155
5156         /* Queue belongs to VF, find the VF and issue VF reset */
5157         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5158             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5159                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5160                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5161                 vf_id -= hw->func_caps.vf_base_id;
5162                 vf = &pf->vf[vf_id];
5163                 i40e_vc_notify_vf_reset(vf);
5164                 /* Allow VF to process pending reset notification */
5165                 msleep(20);
5166                 i40e_reset_vf(vf, false);
5167         }
5168 }
5169
5170 /**
5171  * i40e_service_event_complete - Finish up the service event
5172  * @pf: board private structure
5173  **/
5174 static void i40e_service_event_complete(struct i40e_pf *pf)
5175 {
5176         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5177
5178         /* flush memory to make sure state is correct before next watchog */
5179         smp_mb__before_atomic();
5180         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5181 }
5182
5183 /**
5184  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5185  * @pf: board private structure
5186  **/
5187 int i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5188 {
5189         int val, fcnt_prog;
5190
5191         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5192         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5193         return fcnt_prog;
5194 }
5195
5196 /**
5197  * i40e_get_current_fd_count - Get the count of total FD filters programmed
5198  * @pf: board private structure
5199  **/
5200 int i40e_get_current_fd_count(struct i40e_pf *pf)
5201 {
5202         int val, fcnt_prog;
5203         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5204         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5205                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5206                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5207         return fcnt_prog;
5208 }
5209
5210 /**
5211  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5212  * @pf: board private structure
5213  **/
5214 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5215 {
5216         u32 fcnt_prog, fcnt_avail;
5217
5218         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5219                 return;
5220
5221         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5222          * to re-enable
5223          */
5224         fcnt_prog = i40e_get_cur_guaranteed_fd_count(pf);
5225         fcnt_avail = pf->fdir_pf_filter_count;
5226         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5227             (pf->fd_add_err == 0) ||
5228             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5229                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5230                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5231                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5232                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5233                 }
5234         }
5235         /* Wait for some more space to be available to turn on ATR */
5236         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5237                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5238                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5239                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5240                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5241                 }
5242         }
5243 }
5244
5245 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5246 /**
5247  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5248  * @pf: board private structure
5249  **/
5250 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5251 {
5252         int flush_wait_retry = 50;
5253         int reg;
5254
5255         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5256                 return;
5257
5258         if (time_after(jiffies, pf->fd_flush_timestamp +
5259                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5260                 set_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5261                 pf->fd_flush_timestamp = jiffies;
5262                 pf->auto_disable_flags |= I40E_FLAG_FD_SB_ENABLED;
5263                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5264                 /* flush all filters */
5265                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5266                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5267                 i40e_flush(&pf->hw);
5268                 pf->fd_flush_cnt++;
5269                 pf->fd_add_err = 0;
5270                 do {
5271                         /* Check FD flush status every 5-6msec */
5272                         usleep_range(5000, 6000);
5273                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5274                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5275                                 break;
5276                 } while (flush_wait_retry--);
5277                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5278                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5279                 } else {
5280                         /* replay sideband filters */
5281                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5282
5283                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5284                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5285                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5286                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5287                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5288                 }
5289         }
5290 }
5291
5292 /**
5293  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5294  * @pf: board private structure
5295  **/
5296 int i40e_get_current_atr_cnt(struct i40e_pf *pf)
5297 {
5298         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5299 }
5300
5301 /* We can see up to 256 filter programming desc in transit if the filters are
5302  * being applied really fast; before we see the first
5303  * filter miss error on Rx queue 0. Accumulating enough error messages before
5304  * reacting will make sure we don't cause flush too often.
5305  */
5306 #define I40E_MAX_FD_PROGRAM_ERROR 256
5307
5308 /**
5309  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5310  * @pf: board private structure
5311  **/
5312 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5313 {
5314
5315         /* if interface is down do nothing */
5316         if (test_bit(__I40E_DOWN, &pf->state))
5317                 return;
5318
5319         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5320                 return;
5321
5322         if ((pf->fd_add_err >= I40E_MAX_FD_PROGRAM_ERROR) &&
5323             (i40e_get_current_atr_cnt(pf) >= pf->fd_atr_cnt) &&
5324             (i40e_get_current_atr_cnt(pf) > pf->fdir_pf_filter_count))
5325                 i40e_fdir_flush_and_replay(pf);
5326
5327         i40e_fdir_check_and_reenable(pf);
5328
5329 }
5330
5331 /**
5332  * i40e_vsi_link_event - notify VSI of a link event
5333  * @vsi: vsi to be notified
5334  * @link_up: link up or down
5335  **/
5336 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5337 {
5338         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5339                 return;
5340
5341         switch (vsi->type) {
5342         case I40E_VSI_MAIN:
5343 #ifdef I40E_FCOE
5344         case I40E_VSI_FCOE:
5345 #endif
5346                 if (!vsi->netdev || !vsi->netdev_registered)
5347                         break;
5348
5349                 if (link_up) {
5350                         netif_carrier_on(vsi->netdev);
5351                         netif_tx_wake_all_queues(vsi->netdev);
5352                 } else {
5353                         netif_carrier_off(vsi->netdev);
5354                         netif_tx_stop_all_queues(vsi->netdev);
5355                 }
5356                 break;
5357
5358         case I40E_VSI_SRIOV:
5359                 break;
5360
5361         case I40E_VSI_VMDQ2:
5362         case I40E_VSI_CTRL:
5363         case I40E_VSI_MIRROR:
5364         default:
5365                 /* there is no notification for other VSIs */
5366                 break;
5367         }
5368 }
5369
5370 /**
5371  * i40e_veb_link_event - notify elements on the veb of a link event
5372  * @veb: veb to be notified
5373  * @link_up: link up or down
5374  **/
5375 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5376 {
5377         struct i40e_pf *pf;
5378         int i;
5379
5380         if (!veb || !veb->pf)
5381                 return;
5382         pf = veb->pf;
5383
5384         /* depth first... */
5385         for (i = 0; i < I40E_MAX_VEB; i++)
5386                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5387                         i40e_veb_link_event(pf->veb[i], link_up);
5388
5389         /* ... now the local VSIs */
5390         for (i = 0; i < pf->num_alloc_vsi; i++)
5391                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5392                         i40e_vsi_link_event(pf->vsi[i], link_up);
5393 }
5394
5395 /**
5396  * i40e_link_event - Update netif_carrier status
5397  * @pf: board private structure
5398  **/
5399 static void i40e_link_event(struct i40e_pf *pf)
5400 {
5401         bool new_link, old_link;
5402         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5403
5404         /* set this to force the get_link_status call to refresh state */
5405         pf->hw.phy.get_link_info = true;
5406
5407         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5408         new_link = i40e_get_link_status(&pf->hw);
5409
5410         if (new_link == old_link &&
5411             (test_bit(__I40E_DOWN, &vsi->state) ||
5412              new_link == netif_carrier_ok(vsi->netdev)))
5413                 return;
5414
5415         if (!test_bit(__I40E_DOWN, &vsi->state))
5416                 i40e_print_link_message(vsi, new_link);
5417
5418         /* Notify the base of the switch tree connected to
5419          * the link.  Floating VEBs are not notified.
5420          */
5421         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5422                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5423         else
5424                 i40e_vsi_link_event(vsi, new_link);
5425
5426         if (pf->vf)
5427                 i40e_vc_notify_link_state(pf);
5428
5429         if (pf->flags & I40E_FLAG_PTP)
5430                 i40e_ptp_set_increment(pf);
5431 }
5432
5433 /**
5434  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5435  * @pf: board private structure
5436  *
5437  * Set the per-queue flags to request a check for stuck queues in the irq
5438  * clean functions, then force interrupts to be sure the irq clean is called.
5439  **/
5440 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5441 {
5442         int i, v;
5443
5444         /* If we're down or resetting, just bail */
5445         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
5446                 return;
5447
5448         /* for each VSI/netdev
5449          *     for each Tx queue
5450          *         set the check flag
5451          *     for each q_vector
5452          *         force an interrupt
5453          */
5454         for (v = 0; v < pf->num_alloc_vsi; v++) {
5455                 struct i40e_vsi *vsi = pf->vsi[v];
5456                 int armed = 0;
5457
5458                 if (!pf->vsi[v] ||
5459                     test_bit(__I40E_DOWN, &vsi->state) ||
5460                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5461                         continue;
5462
5463                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5464                         set_check_for_tx_hang(vsi->tx_rings[i]);
5465                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5466                                      &vsi->tx_rings[i]->state))
5467                                 armed++;
5468                 }
5469
5470                 if (armed) {
5471                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5472                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5473                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5474                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
5475                         } else {
5476                                 u16 vec = vsi->base_vector - 1;
5477                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5478                                            I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
5479                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5480                                         wr32(&vsi->back->hw,
5481                                              I40E_PFINT_DYN_CTLN(vec), val);
5482                         }
5483                         i40e_flush(&vsi->back->hw);
5484                 }
5485         }
5486 }
5487
5488 /**
5489  * i40e_watchdog_subtask - periodic checks not using event driven response
5490  * @pf: board private structure
5491  **/
5492 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5493 {
5494         int i;
5495
5496         /* if interface is down do nothing */
5497         if (test_bit(__I40E_DOWN, &pf->state) ||
5498             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5499                 return;
5500
5501         /* make sure we don't do these things too often */
5502         if (time_before(jiffies, (pf->service_timer_previous +
5503                                   pf->service_timer_period)))
5504                 return;
5505         pf->service_timer_previous = jiffies;
5506
5507         i40e_check_hang_subtask(pf);
5508         i40e_link_event(pf);
5509
5510         /* Update the stats for active netdevs so the network stack
5511          * can look at updated numbers whenever it cares to
5512          */
5513         for (i = 0; i < pf->num_alloc_vsi; i++)
5514                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5515                         i40e_update_stats(pf->vsi[i]);
5516
5517         /* Update the stats for the active switching components */
5518         for (i = 0; i < I40E_MAX_VEB; i++)
5519                 if (pf->veb[i])
5520                         i40e_update_veb_stats(pf->veb[i]);
5521
5522         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5523 }
5524
5525 /**
5526  * i40e_reset_subtask - Set up for resetting the device and driver
5527  * @pf: board private structure
5528  **/
5529 static void i40e_reset_subtask(struct i40e_pf *pf)
5530 {
5531         u32 reset_flags = 0;
5532
5533         rtnl_lock();
5534         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5535                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5536                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5537         }
5538         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5539                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5540                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5541         }
5542         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5543                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5544                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5545         }
5546         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5547                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5548                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5549         }
5550         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5551                 reset_flags |= (1 << __I40E_DOWN_REQUESTED);
5552                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5553         }
5554
5555         /* If there's a recovery already waiting, it takes
5556          * precedence before starting a new reset sequence.
5557          */
5558         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5559                 i40e_handle_reset_warning(pf);
5560                 goto unlock;
5561         }
5562
5563         /* If we're already down or resetting, just bail */
5564         if (reset_flags &&
5565             !test_bit(__I40E_DOWN, &pf->state) &&
5566             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5567                 i40e_do_reset(pf, reset_flags);
5568
5569 unlock:
5570         rtnl_unlock();
5571 }
5572
5573 /**
5574  * i40e_handle_link_event - Handle link event
5575  * @pf: board private structure
5576  * @e: event info posted on ARQ
5577  **/
5578 static void i40e_handle_link_event(struct i40e_pf *pf,
5579                                    struct i40e_arq_event_info *e)
5580 {
5581         struct i40e_hw *hw = &pf->hw;
5582         struct i40e_aqc_get_link_status *status =
5583                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5584         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
5585
5586         /* save off old link status information */
5587         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
5588                sizeof(pf->hw.phy.link_info_old));
5589
5590         /* Do a new status request to re-enable LSE reporting
5591          * and load new status information into the hw struct
5592          * This completely ignores any state information
5593          * in the ARQ event info, instead choosing to always
5594          * issue the AQ update link status command.
5595          */
5596         i40e_link_event(pf);
5597
5598         /* check for unqualified module, if link is down */
5599         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5600             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5601             (!(status->link_info & I40E_AQ_LINK_UP)))
5602                 dev_err(&pf->pdev->dev,
5603                         "The driver failed to link because an unqualified module was detected.\n");
5604 }
5605
5606 /**
5607  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5608  * @pf: board private structure
5609  **/
5610 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5611 {
5612         struct i40e_arq_event_info event;
5613         struct i40e_hw *hw = &pf->hw;
5614         u16 pending, i = 0;
5615         i40e_status ret;
5616         u16 opcode;
5617         u32 oldval;
5618         u32 val;
5619
5620         /* Do not run clean AQ when PF reset fails */
5621         if (test_bit(__I40E_RESET_FAILED, &pf->state))
5622                 return;
5623
5624         /* check for error indications */
5625         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5626         oldval = val;
5627         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5628                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5629                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5630         }
5631         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5632                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5633                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5634         }
5635         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5636                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5637                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5638         }
5639         if (oldval != val)
5640                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5641
5642         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5643         oldval = val;
5644         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5645                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5646                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5647         }
5648         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5649                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5650                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5651         }
5652         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5653                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5654                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5655         }
5656         if (oldval != val)
5657                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5658
5659         event.msg_size = I40E_MAX_AQ_BUF_SIZE;
5660         event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
5661         if (!event.msg_buf)
5662                 return;
5663
5664         do {
5665                 event.msg_size = I40E_MAX_AQ_BUF_SIZE; /* reinit each time */
5666                 ret = i40e_clean_arq_element(hw, &event, &pending);
5667                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
5668                         break;
5669                 else if (ret) {
5670                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5671                         break;
5672                 }
5673
5674                 opcode = le16_to_cpu(event.desc.opcode);
5675                 switch (opcode) {
5676
5677                 case i40e_aqc_opc_get_link_status:
5678                         i40e_handle_link_event(pf, &event);
5679                         break;
5680                 case i40e_aqc_opc_send_msg_to_pf:
5681                         ret = i40e_vc_process_vf_msg(pf,
5682                                         le16_to_cpu(event.desc.retval),
5683                                         le32_to_cpu(event.desc.cookie_high),
5684                                         le32_to_cpu(event.desc.cookie_low),
5685                                         event.msg_buf,
5686                                         event.msg_size);
5687                         break;
5688                 case i40e_aqc_opc_lldp_update_mib:
5689                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5690 #ifdef CONFIG_I40E_DCB
5691                         rtnl_lock();
5692                         ret = i40e_handle_lldp_event(pf, &event);
5693                         rtnl_unlock();
5694 #endif /* CONFIG_I40E_DCB */
5695                         break;
5696                 case i40e_aqc_opc_event_lan_overflow:
5697                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5698                         i40e_handle_lan_overflow_event(pf, &event);
5699                         break;
5700                 case i40e_aqc_opc_send_msg_to_peer:
5701                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5702                         break;
5703                 default:
5704                         dev_info(&pf->pdev->dev,
5705                                  "ARQ Error: Unknown event 0x%04x received\n",
5706                                  opcode);
5707                         break;
5708                 }
5709         } while (pending && (i++ < pf->adminq_work_limit));
5710
5711         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5712         /* re-enable Admin queue interrupt cause */
5713         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5714         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5715         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5716         i40e_flush(hw);
5717
5718         kfree(event.msg_buf);
5719 }
5720
5721 /**
5722  * i40e_verify_eeprom - make sure eeprom is good to use
5723  * @pf: board private structure
5724  **/
5725 static void i40e_verify_eeprom(struct i40e_pf *pf)
5726 {
5727         int err;
5728
5729         err = i40e_diag_eeprom_test(&pf->hw);
5730         if (err) {
5731                 /* retry in case of garbage read */
5732                 err = i40e_diag_eeprom_test(&pf->hw);
5733                 if (err) {
5734                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5735                                  err);
5736                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5737                 }
5738         }
5739
5740         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5741                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5742                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5743         }
5744 }
5745
5746 /**
5747  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5748  * @veb: pointer to the VEB instance
5749  *
5750  * This is a recursive function that first builds the attached VSIs then
5751  * recurses in to build the next layer of VEB.  We track the connections
5752  * through our own index numbers because the seid's from the HW could
5753  * change across the reset.
5754  **/
5755 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5756 {
5757         struct i40e_vsi *ctl_vsi = NULL;
5758         struct i40e_pf *pf = veb->pf;
5759         int v, veb_idx;
5760         int ret;
5761
5762         /* build VSI that owns this VEB, temporarily attached to base VEB */
5763         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
5764                 if (pf->vsi[v] &&
5765                     pf->vsi[v]->veb_idx == veb->idx &&
5766                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5767                         ctl_vsi = pf->vsi[v];
5768                         break;
5769                 }
5770         }
5771         if (!ctl_vsi) {
5772                 dev_info(&pf->pdev->dev,
5773                          "missing owner VSI for veb_idx %d\n", veb->idx);
5774                 ret = -ENOENT;
5775                 goto end_reconstitute;
5776         }
5777         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5778                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5779         ret = i40e_add_vsi(ctl_vsi);
5780         if (ret) {
5781                 dev_info(&pf->pdev->dev,
5782                          "rebuild of owner VSI failed: %d\n", ret);
5783                 goto end_reconstitute;
5784         }
5785         i40e_vsi_reset_stats(ctl_vsi);
5786
5787         /* create the VEB in the switch and move the VSI onto the VEB */
5788         ret = i40e_add_veb(veb, ctl_vsi);
5789         if (ret)
5790                 goto end_reconstitute;
5791
5792         /* create the remaining VSIs attached to this VEB */
5793         for (v = 0; v < pf->num_alloc_vsi; v++) {
5794                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5795                         continue;
5796
5797                 if (pf->vsi[v]->veb_idx == veb->idx) {
5798                         struct i40e_vsi *vsi = pf->vsi[v];
5799                         vsi->uplink_seid = veb->seid;
5800                         ret = i40e_add_vsi(vsi);
5801                         if (ret) {
5802                                 dev_info(&pf->pdev->dev,
5803                                          "rebuild of vsi_idx %d failed: %d\n",
5804                                          v, ret);
5805                                 goto end_reconstitute;
5806                         }
5807                         i40e_vsi_reset_stats(vsi);
5808                 }
5809         }
5810
5811         /* create any VEBs attached to this VEB - RECURSION */
5812         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5813                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5814                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5815                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5816                         if (ret)
5817                                 break;
5818                 }
5819         }
5820
5821 end_reconstitute:
5822         return ret;
5823 }
5824
5825 /**
5826  * i40e_get_capabilities - get info about the HW
5827  * @pf: the PF struct
5828  **/
5829 static int i40e_get_capabilities(struct i40e_pf *pf)
5830 {
5831         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5832         u16 data_size;
5833         int buf_len;
5834         int err;
5835
5836         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5837         do {
5838                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5839                 if (!cap_buf)
5840                         return -ENOMEM;
5841
5842                 /* this loads the data into the hw struct for us */
5843                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5844                                             &data_size,
5845                                             i40e_aqc_opc_list_func_capabilities,
5846                                             NULL);
5847                 /* data loaded, buffer no longer needed */
5848                 kfree(cap_buf);
5849
5850                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
5851                         /* retry with a larger buffer */
5852                         buf_len = data_size;
5853                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
5854                         dev_info(&pf->pdev->dev,
5855                                  "capability discovery failed: aq=%d\n",
5856                                  pf->hw.aq.asq_last_status);
5857                         return -ENODEV;
5858                 }
5859         } while (err);
5860
5861         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
5862             (pf->hw.aq.fw_maj_ver < 2)) {
5863                 pf->hw.func_caps.num_msix_vectors++;
5864                 pf->hw.func_caps.num_msix_vectors_vf++;
5865         }
5866
5867         if (pf->hw.debug_mask & I40E_DEBUG_USER)
5868                 dev_info(&pf->pdev->dev,
5869                          "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",
5870                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
5871                          pf->hw.func_caps.num_msix_vectors,
5872                          pf->hw.func_caps.num_msix_vectors_vf,
5873                          pf->hw.func_caps.fd_filters_guaranteed,
5874                          pf->hw.func_caps.fd_filters_best_effort,
5875                          pf->hw.func_caps.num_tx_qp,
5876                          pf->hw.func_caps.num_vsis);
5877
5878 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
5879                        + pf->hw.func_caps.num_vfs)
5880         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
5881                 dev_info(&pf->pdev->dev,
5882                          "got num_vsis %d, setting num_vsis to %d\n",
5883                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
5884                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
5885         }
5886
5887         return 0;
5888 }
5889
5890 static int i40e_vsi_clear(struct i40e_vsi *vsi);
5891
5892 /**
5893  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
5894  * @pf: board private structure
5895  **/
5896 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
5897 {
5898         struct i40e_vsi *vsi;
5899         int i;
5900
5901         /* quick workaround for an NVM issue that leaves a critical register
5902          * uninitialized
5903          */
5904         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
5905                 static const u32 hkey[] = {
5906                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
5907                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
5908                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
5909                         0x95b3a76d};
5910
5911                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
5912                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
5913         }
5914
5915         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
5916                 return;
5917
5918         /* find existing VSI and see if it needs configuring */
5919         vsi = NULL;
5920         for (i = 0; i < pf->num_alloc_vsi; i++) {
5921                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5922                         vsi = pf->vsi[i];
5923                         break;
5924                 }
5925         }
5926
5927         /* create a new VSI if none exists */
5928         if (!vsi) {
5929                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
5930                                      pf->vsi[pf->lan_vsi]->seid, 0);
5931                 if (!vsi) {
5932                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
5933                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
5934                         return;
5935                 }
5936         }
5937
5938         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
5939 }
5940
5941 /**
5942  * i40e_fdir_teardown - release the Flow Director resources
5943  * @pf: board private structure
5944  **/
5945 static void i40e_fdir_teardown(struct i40e_pf *pf)
5946 {
5947         int i;
5948
5949         i40e_fdir_filter_exit(pf);
5950         for (i = 0; i < pf->num_alloc_vsi; i++) {
5951                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5952                         i40e_vsi_release(pf->vsi[i]);
5953                         break;
5954                 }
5955         }
5956 }
5957
5958 /**
5959  * i40e_prep_for_reset - prep for the core to reset
5960  * @pf: board private structure
5961  *
5962  * Close up the VFs and other things in prep for pf Reset.
5963   **/
5964 static void i40e_prep_for_reset(struct i40e_pf *pf)
5965 {
5966         struct i40e_hw *hw = &pf->hw;
5967         i40e_status ret = 0;
5968         u32 v;
5969
5970         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
5971         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
5972                 return;
5973
5974         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
5975
5976         /* quiesce the VSIs and their queues that are not already DOWN */
5977         i40e_pf_quiesce_all_vsi(pf);
5978
5979         for (v = 0; v < pf->num_alloc_vsi; v++) {
5980                 if (pf->vsi[v])
5981                         pf->vsi[v]->seid = 0;
5982         }
5983
5984         i40e_shutdown_adminq(&pf->hw);
5985
5986         /* call shutdown HMC */
5987         if (hw->hmc.hmc_obj) {
5988                 ret = i40e_shutdown_lan_hmc(hw);
5989                 if (ret)
5990                         dev_warn(&pf->pdev->dev,
5991                                  "shutdown_lan_hmc failed: %d\n", ret);
5992         }
5993 }
5994
5995 /**
5996  * i40e_send_version - update firmware with driver version
5997  * @pf: PF struct
5998  */
5999 static void i40e_send_version(struct i40e_pf *pf)
6000 {
6001         struct i40e_driver_version dv;
6002
6003         dv.major_version = DRV_VERSION_MAJOR;
6004         dv.minor_version = DRV_VERSION_MINOR;
6005         dv.build_version = DRV_VERSION_BUILD;
6006         dv.subbuild_version = 0;
6007         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6008         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6009 }
6010
6011 /**
6012  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6013  * @pf: board private structure
6014  * @reinit: if the Main VSI needs to re-initialized.
6015  **/
6016 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6017 {
6018         struct i40e_hw *hw = &pf->hw;
6019         u8 set_fc_aq_fail = 0;
6020         i40e_status ret;
6021         u32 v;
6022
6023         /* Now we wait for GRST to settle out.
6024          * We don't have to delete the VEBs or VSIs from the hw switch
6025          * because the reset will make them disappear.
6026          */
6027         ret = i40e_pf_reset(hw);
6028         if (ret) {
6029                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6030                 set_bit(__I40E_RESET_FAILED, &pf->state);
6031                 goto clear_recovery;
6032         }
6033         pf->pfr_count++;
6034
6035         if (test_bit(__I40E_DOWN, &pf->state))
6036                 goto clear_recovery;
6037         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6038
6039         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6040         ret = i40e_init_adminq(&pf->hw);
6041         if (ret) {
6042                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
6043                 goto clear_recovery;
6044         }
6045
6046         /* re-verify the eeprom if we just had an EMP reset */
6047         if (test_bit(__I40E_EMP_RESET_REQUESTED, &pf->state)) {
6048                 clear_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
6049                 i40e_verify_eeprom(pf);
6050         }
6051
6052         i40e_clear_pxe_mode(hw);
6053         ret = i40e_get_capabilities(pf);
6054         if (ret) {
6055                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
6056                          ret);
6057                 goto end_core_reset;
6058         }
6059
6060         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6061                                 hw->func_caps.num_rx_qp,
6062                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6063         if (ret) {
6064                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6065                 goto end_core_reset;
6066         }
6067         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6068         if (ret) {
6069                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6070                 goto end_core_reset;
6071         }
6072
6073 #ifdef CONFIG_I40E_DCB
6074         ret = i40e_init_pf_dcb(pf);
6075         if (ret) {
6076                 dev_info(&pf->pdev->dev, "init_pf_dcb failed: %d\n", ret);
6077                 goto end_core_reset;
6078         }
6079 #endif /* CONFIG_I40E_DCB */
6080 #ifdef I40E_FCOE
6081         ret = i40e_init_pf_fcoe(pf);
6082         if (ret)
6083                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6084
6085 #endif
6086         /* do basic switch setup */
6087         ret = i40e_setup_pf_switch(pf, reinit);
6088         if (ret)
6089                 goto end_core_reset;
6090
6091         /* driver is only interested in link up/down and module qualification
6092          * reports from firmware
6093          */
6094         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6095                                        I40E_AQ_EVENT_LINK_UPDOWN |
6096                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6097         if (ret)
6098                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", ret);
6099
6100         /* make sure our flow control settings are restored */
6101         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6102         if (ret)
6103                 dev_info(&pf->pdev->dev, "set fc fail, aq_err %d\n", ret);
6104
6105         /* Rebuild the VSIs and VEBs that existed before reset.
6106          * They are still in our local switch element arrays, so only
6107          * need to rebuild the switch model in the HW.
6108          *
6109          * If there were VEBs but the reconstitution failed, we'll try
6110          * try to recover minimal use by getting the basic PF VSI working.
6111          */
6112         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6113                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6114                 /* find the one VEB connected to the MAC, and find orphans */
6115                 for (v = 0; v < I40E_MAX_VEB; v++) {
6116                         if (!pf->veb[v])
6117                                 continue;
6118
6119                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6120                             pf->veb[v]->uplink_seid == 0) {
6121                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6122
6123                                 if (!ret)
6124                                         continue;
6125
6126                                 /* If Main VEB failed, we're in deep doodoo,
6127                                  * so give up rebuilding the switch and set up
6128                                  * for minimal rebuild of PF VSI.
6129                                  * If orphan failed, we'll report the error
6130                                  * but try to keep going.
6131                                  */
6132                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6133                                         dev_info(&pf->pdev->dev,
6134                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6135                                                  ret);
6136                                         pf->vsi[pf->lan_vsi]->uplink_seid
6137                                                                 = pf->mac_seid;
6138                                         break;
6139                                 } else if (pf->veb[v]->uplink_seid == 0) {
6140                                         dev_info(&pf->pdev->dev,
6141                                                  "rebuild of orphan VEB failed: %d\n",
6142                                                  ret);
6143                                 }
6144                         }
6145                 }
6146         }
6147
6148         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6149                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6150                 /* no VEB, so rebuild only the Main VSI */
6151                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6152                 if (ret) {
6153                         dev_info(&pf->pdev->dev,
6154                                  "rebuild of Main VSI failed: %d\n", ret);
6155                         goto end_core_reset;
6156                 }
6157         }
6158
6159         msleep(75);
6160         ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6161         if (ret) {
6162                 dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
6163                          pf->hw.aq.asq_last_status);
6164         }
6165
6166         /* reinit the misc interrupt */
6167         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6168                 ret = i40e_setup_misc_vector(pf);
6169
6170         /* restart the VSIs that were rebuilt and running before the reset */
6171         i40e_pf_unquiesce_all_vsi(pf);
6172
6173         if (pf->num_alloc_vfs) {
6174                 for (v = 0; v < pf->num_alloc_vfs; v++)
6175                         i40e_reset_vf(&pf->vf[v], true);
6176         }
6177
6178         /* tell the firmware that we're starting */
6179         i40e_send_version(pf);
6180
6181 end_core_reset:
6182         clear_bit(__I40E_RESET_FAILED, &pf->state);
6183 clear_recovery:
6184         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6185 }
6186
6187 /**
6188  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
6189  * @pf: board private structure
6190  *
6191  * Close up the VFs and other things in prep for a Core Reset,
6192  * then get ready to rebuild the world.
6193  **/
6194 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6195 {
6196         i40e_prep_for_reset(pf);
6197         i40e_reset_and_rebuild(pf, false);
6198 }
6199
6200 /**
6201  * i40e_handle_mdd_event
6202  * @pf: pointer to the pf structure
6203  *
6204  * Called from the MDD irq handler to identify possibly malicious vfs
6205  **/
6206 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6207 {
6208         struct i40e_hw *hw = &pf->hw;
6209         bool mdd_detected = false;
6210         bool pf_mdd_detected = false;
6211         struct i40e_vf *vf;
6212         u32 reg;
6213         int i;
6214
6215         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6216                 return;
6217
6218         /* find what triggered the MDD event */
6219         reg = rd32(hw, I40E_GL_MDET_TX);
6220         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6221                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6222                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6223                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6224                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6225                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6226                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6227                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6228                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6229                                 pf->hw.func_caps.base_queue;
6230                 if (netif_msg_tx_err(pf))
6231                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d pf number 0x%02x vf number 0x%02x\n",
6232                                  event, queue, pf_num, vf_num);
6233                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6234                 mdd_detected = true;
6235         }
6236         reg = rd32(hw, I40E_GL_MDET_RX);
6237         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6238                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6239                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6240                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6241                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6242                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6243                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6244                                 pf->hw.func_caps.base_queue;
6245                 if (netif_msg_rx_err(pf))
6246                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6247                                  event, queue, func);
6248                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6249                 mdd_detected = true;
6250         }
6251
6252         if (mdd_detected) {
6253                 reg = rd32(hw, I40E_PF_MDET_TX);
6254                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6255                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6256                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6257                         pf_mdd_detected = true;
6258                 }
6259                 reg = rd32(hw, I40E_PF_MDET_RX);
6260                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6261                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6262                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6263                         pf_mdd_detected = true;
6264                 }
6265                 /* Queue belongs to the PF, initiate a reset */
6266                 if (pf_mdd_detected) {
6267                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6268                         i40e_service_event_schedule(pf);
6269                 }
6270         }
6271
6272         /* see if one of the VFs needs its hand slapped */
6273         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6274                 vf = &(pf->vf[i]);
6275                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6276                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6277                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6278                         vf->num_mdd_events++;
6279                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6280                                  i);
6281                 }
6282
6283                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6284                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6285                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6286                         vf->num_mdd_events++;
6287                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6288                                  i);
6289                 }
6290
6291                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6292                         dev_info(&pf->pdev->dev,
6293                                  "Too many MDD events on VF %d, disabled\n", i);
6294                         dev_info(&pf->pdev->dev,
6295                                  "Use PF Control I/F to re-enable the VF\n");
6296                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6297                 }
6298         }
6299
6300         /* re-enable mdd interrupt cause */
6301         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6302         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6303         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6304         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6305         i40e_flush(hw);
6306 }
6307
6308 #ifdef CONFIG_I40E_VXLAN
6309 /**
6310  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6311  * @pf: board private structure
6312  **/
6313 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6314 {
6315         struct i40e_hw *hw = &pf->hw;
6316         i40e_status ret;
6317         u8 filter_index;
6318         __be16 port;
6319         int i;
6320
6321         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6322                 return;
6323
6324         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6325
6326         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6327                 if (pf->pending_vxlan_bitmap & (1 << i)) {
6328                         pf->pending_vxlan_bitmap &= ~(1 << i);
6329                         port = pf->vxlan_ports[i];
6330                         ret = port ?
6331                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
6332                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6333                                                      &filter_index, NULL)
6334                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
6335
6336                         if (ret) {
6337                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
6338                                          port ? "adding" : "deleting",
6339                                          ntohs(port), port ? i : i);
6340
6341                                 pf->vxlan_ports[i] = 0;
6342                         } else {
6343                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
6344                                          port ? "Added" : "Deleted",
6345                                          ntohs(port), port ? i : filter_index);
6346                         }
6347                 }
6348         }
6349 }
6350
6351 #endif
6352 /**
6353  * i40e_service_task - Run the driver's async subtasks
6354  * @work: pointer to work_struct containing our data
6355  **/
6356 static void i40e_service_task(struct work_struct *work)
6357 {
6358         struct i40e_pf *pf = container_of(work,
6359                                           struct i40e_pf,
6360                                           service_task);
6361         unsigned long start_time = jiffies;
6362
6363         /* don't bother with service tasks if a reset is in progress */
6364         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6365                 i40e_service_event_complete(pf);
6366                 return;
6367         }
6368
6369         i40e_reset_subtask(pf);
6370         i40e_handle_mdd_event(pf);
6371         i40e_vc_process_vflr_event(pf);
6372         i40e_watchdog_subtask(pf);
6373         i40e_fdir_reinit_subtask(pf);
6374         i40e_sync_filters_subtask(pf);
6375 #ifdef CONFIG_I40E_VXLAN
6376         i40e_sync_vxlan_filters_subtask(pf);
6377 #endif
6378         i40e_clean_adminq_subtask(pf);
6379
6380         i40e_service_event_complete(pf);
6381
6382         /* If the tasks have taken longer than one timer cycle or there
6383          * is more work to be done, reschedule the service task now
6384          * rather than wait for the timer to tick again.
6385          */
6386         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6387             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6388             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6389             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6390                 i40e_service_event_schedule(pf);
6391 }
6392
6393 /**
6394  * i40e_service_timer - timer callback
6395  * @data: pointer to PF struct
6396  **/
6397 static void i40e_service_timer(unsigned long data)
6398 {
6399         struct i40e_pf *pf = (struct i40e_pf *)data;
6400
6401         mod_timer(&pf->service_timer,
6402                   round_jiffies(jiffies + pf->service_timer_period));
6403         i40e_service_event_schedule(pf);
6404 }
6405
6406 /**
6407  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6408  * @vsi: the VSI being configured
6409  **/
6410 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6411 {
6412         struct i40e_pf *pf = vsi->back;
6413
6414         switch (vsi->type) {
6415         case I40E_VSI_MAIN:
6416                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6417                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6418                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6419                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6420                         vsi->num_q_vectors = pf->num_lan_msix;
6421                 else
6422                         vsi->num_q_vectors = 1;
6423
6424                 break;
6425
6426         case I40E_VSI_FDIR:
6427                 vsi->alloc_queue_pairs = 1;
6428                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6429                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6430                 vsi->num_q_vectors = 1;
6431                 break;
6432
6433         case I40E_VSI_VMDQ2:
6434                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6435                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6436                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6437                 vsi->num_q_vectors = pf->num_vmdq_msix;
6438                 break;
6439
6440         case I40E_VSI_SRIOV:
6441                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6442                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6443                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6444                 break;
6445
6446 #ifdef I40E_FCOE
6447         case I40E_VSI_FCOE:
6448                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6449                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6450                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6451                 vsi->num_q_vectors = pf->num_fcoe_msix;
6452                 break;
6453
6454 #endif /* I40E_FCOE */
6455         default:
6456                 WARN_ON(1);
6457                 return -ENODATA;
6458         }
6459
6460         return 0;
6461 }
6462
6463 /**
6464  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6465  * @type: VSI pointer
6466  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6467  *
6468  * On error: returns error code (negative)
6469  * On success: returns 0
6470  **/
6471 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6472 {
6473         int size;
6474         int ret = 0;
6475
6476         /* allocate memory for both Tx and Rx ring pointers */
6477         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6478         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6479         if (!vsi->tx_rings)
6480                 return -ENOMEM;
6481         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6482
6483         if (alloc_qvectors) {
6484                 /* allocate memory for q_vector pointers */
6485                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6486                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6487                 if (!vsi->q_vectors) {
6488                         ret = -ENOMEM;
6489                         goto err_vectors;
6490                 }
6491         }
6492         return ret;
6493
6494 err_vectors:
6495         kfree(vsi->tx_rings);
6496         return ret;
6497 }
6498
6499 /**
6500  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6501  * @pf: board private structure
6502  * @type: type of VSI
6503  *
6504  * On error: returns error code (negative)
6505  * On success: returns vsi index in PF (positive)
6506  **/
6507 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6508 {
6509         int ret = -ENODEV;
6510         struct i40e_vsi *vsi;
6511         int vsi_idx;
6512         int i;
6513
6514         /* Need to protect the allocation of the VSIs at the PF level */
6515         mutex_lock(&pf->switch_mutex);
6516
6517         /* VSI list may be fragmented if VSI creation/destruction has
6518          * been happening.  We can afford to do a quick scan to look
6519          * for any free VSIs in the list.
6520          *
6521          * find next empty vsi slot, looping back around if necessary
6522          */
6523         i = pf->next_vsi;
6524         while (i < pf->num_alloc_vsi && pf->vsi[i])
6525                 i++;
6526         if (i >= pf->num_alloc_vsi) {
6527                 i = 0;
6528                 while (i < pf->next_vsi && pf->vsi[i])
6529                         i++;
6530         }
6531
6532         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6533                 vsi_idx = i;             /* Found one! */
6534         } else {
6535                 ret = -ENODEV;
6536                 goto unlock_pf;  /* out of VSI slots! */
6537         }
6538         pf->next_vsi = ++i;
6539
6540         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6541         if (!vsi) {
6542                 ret = -ENOMEM;
6543                 goto unlock_pf;
6544         }
6545         vsi->type = type;
6546         vsi->back = pf;
6547         set_bit(__I40E_DOWN, &vsi->state);
6548         vsi->flags = 0;
6549         vsi->idx = vsi_idx;
6550         vsi->rx_itr_setting = pf->rx_itr_default;
6551         vsi->tx_itr_setting = pf->tx_itr_default;
6552         vsi->netdev_registered = false;
6553         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6554         INIT_LIST_HEAD(&vsi->mac_filter_list);
6555         vsi->irqs_ready = false;
6556
6557         ret = i40e_set_num_rings_in_vsi(vsi);
6558         if (ret)
6559                 goto err_rings;
6560
6561         ret = i40e_vsi_alloc_arrays(vsi, true);
6562         if (ret)
6563                 goto err_rings;
6564
6565         /* Setup default MSIX irq handler for VSI */
6566         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6567
6568         pf->vsi[vsi_idx] = vsi;
6569         ret = vsi_idx;
6570         goto unlock_pf;
6571
6572 err_rings:
6573         pf->next_vsi = i - 1;
6574         kfree(vsi);
6575 unlock_pf:
6576         mutex_unlock(&pf->switch_mutex);
6577         return ret;
6578 }
6579
6580 /**
6581  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6582  * @type: VSI pointer
6583  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6584  *
6585  * On error: returns error code (negative)
6586  * On success: returns 0
6587  **/
6588 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6589 {
6590         /* free the ring and vector containers */
6591         if (free_qvectors) {
6592                 kfree(vsi->q_vectors);
6593                 vsi->q_vectors = NULL;
6594         }
6595         kfree(vsi->tx_rings);
6596         vsi->tx_rings = NULL;
6597         vsi->rx_rings = NULL;
6598 }
6599
6600 /**
6601  * i40e_vsi_clear - Deallocate the VSI provided
6602  * @vsi: the VSI being un-configured
6603  **/
6604 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6605 {
6606         struct i40e_pf *pf;
6607
6608         if (!vsi)
6609                 return 0;
6610
6611         if (!vsi->back)
6612                 goto free_vsi;
6613         pf = vsi->back;
6614
6615         mutex_lock(&pf->switch_mutex);
6616         if (!pf->vsi[vsi->idx]) {
6617                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6618                         vsi->idx, vsi->idx, vsi, vsi->type);
6619                 goto unlock_vsi;
6620         }
6621
6622         if (pf->vsi[vsi->idx] != vsi) {
6623                 dev_err(&pf->pdev->dev,
6624                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6625                         pf->vsi[vsi->idx]->idx,
6626                         pf->vsi[vsi->idx],
6627                         pf->vsi[vsi->idx]->type,
6628                         vsi->idx, vsi, vsi->type);
6629                 goto unlock_vsi;
6630         }
6631
6632         /* updates the pf for this cleared vsi */
6633         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6634         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6635
6636         i40e_vsi_free_arrays(vsi, true);
6637
6638         pf->vsi[vsi->idx] = NULL;
6639         if (vsi->idx < pf->next_vsi)
6640                 pf->next_vsi = vsi->idx;
6641
6642 unlock_vsi:
6643         mutex_unlock(&pf->switch_mutex);
6644 free_vsi:
6645         kfree(vsi);
6646
6647         return 0;
6648 }
6649
6650 /**
6651  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6652  * @vsi: the VSI being cleaned
6653  **/
6654 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6655 {
6656         int i;
6657
6658         if (vsi->tx_rings && vsi->tx_rings[0]) {
6659                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6660                         kfree_rcu(vsi->tx_rings[i], rcu);
6661                         vsi->tx_rings[i] = NULL;
6662                         vsi->rx_rings[i] = NULL;
6663                 }
6664         }
6665 }
6666
6667 /**
6668  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6669  * @vsi: the VSI being configured
6670  **/
6671 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6672 {
6673         struct i40e_ring *tx_ring, *rx_ring;
6674         struct i40e_pf *pf = vsi->back;
6675         int i;
6676
6677         /* Set basic values in the rings to be used later during open() */
6678         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6679                 /* allocate space for both Tx and Rx in one shot */
6680                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6681                 if (!tx_ring)
6682                         goto err_out;
6683
6684                 tx_ring->queue_index = i;
6685                 tx_ring->reg_idx = vsi->base_queue + i;
6686                 tx_ring->ring_active = false;
6687                 tx_ring->vsi = vsi;
6688                 tx_ring->netdev = vsi->netdev;
6689                 tx_ring->dev = &pf->pdev->dev;
6690                 tx_ring->count = vsi->num_desc;
6691                 tx_ring->size = 0;
6692                 tx_ring->dcb_tc = 0;
6693                 vsi->tx_rings[i] = tx_ring;
6694
6695                 rx_ring = &tx_ring[1];
6696                 rx_ring->queue_index = i;
6697                 rx_ring->reg_idx = vsi->base_queue + i;
6698                 rx_ring->ring_active = false;
6699                 rx_ring->vsi = vsi;
6700                 rx_ring->netdev = vsi->netdev;
6701                 rx_ring->dev = &pf->pdev->dev;
6702                 rx_ring->count = vsi->num_desc;
6703                 rx_ring->size = 0;
6704                 rx_ring->dcb_tc = 0;
6705                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6706                         set_ring_16byte_desc_enabled(rx_ring);
6707                 else
6708                         clear_ring_16byte_desc_enabled(rx_ring);
6709                 vsi->rx_rings[i] = rx_ring;
6710         }
6711
6712         return 0;
6713
6714 err_out:
6715         i40e_vsi_clear_rings(vsi);
6716         return -ENOMEM;
6717 }
6718
6719 /**
6720  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6721  * @pf: board private structure
6722  * @vectors: the number of MSI-X vectors to request
6723  *
6724  * Returns the number of vectors reserved, or error
6725  **/
6726 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6727 {
6728         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6729                                         I40E_MIN_MSIX, vectors);
6730         if (vectors < 0) {
6731                 dev_info(&pf->pdev->dev,
6732                          "MSI-X vector reservation failed: %d\n", vectors);
6733                 vectors = 0;
6734         }
6735
6736         return vectors;
6737 }
6738
6739 /**
6740  * i40e_init_msix - Setup the MSIX capability
6741  * @pf: board private structure
6742  *
6743  * Work with the OS to set up the MSIX vectors needed.
6744  *
6745  * Returns 0 on success, negative on failure
6746  **/
6747 static int i40e_init_msix(struct i40e_pf *pf)
6748 {
6749         i40e_status err = 0;
6750         struct i40e_hw *hw = &pf->hw;
6751         int other_vecs = 0;
6752         int v_budget, i;
6753         int vec;
6754
6755         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6756                 return -ENODEV;
6757
6758         /* The number of vectors we'll request will be comprised of:
6759          *   - Add 1 for "other" cause for Admin Queue events, etc.
6760          *   - The number of LAN queue pairs
6761          *      - Queues being used for RSS.
6762          *              We don't need as many as max_rss_size vectors.
6763          *              use rss_size instead in the calculation since that
6764          *              is governed by number of cpus in the system.
6765          *      - assumes symmetric Tx/Rx pairing
6766          *   - The number of VMDq pairs
6767 #ifdef I40E_FCOE
6768          *   - The number of FCOE qps.
6769 #endif
6770          * Once we count this up, try the request.
6771          *
6772          * If we can't get what we want, we'll simplify to nearly nothing
6773          * and try again.  If that still fails, we punt.
6774          */
6775         pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
6776         pf->num_vmdq_msix = pf->num_vmdq_qps;
6777         other_vecs = 1;
6778         other_vecs += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6779         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6780                 other_vecs++;
6781
6782 #ifdef I40E_FCOE
6783         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6784                 pf->num_fcoe_msix = pf->num_fcoe_qps;
6785                 v_budget += pf->num_fcoe_msix;
6786         }
6787
6788 #endif
6789         /* Scale down if necessary, and the rings will share vectors */
6790         pf->num_lan_msix = min_t(int, pf->num_lan_msix,
6791                         (hw->func_caps.num_msix_vectors - other_vecs));
6792         v_budget = pf->num_lan_msix + other_vecs;
6793
6794         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6795                                    GFP_KERNEL);
6796         if (!pf->msix_entries)
6797                 return -ENOMEM;
6798
6799         for (i = 0; i < v_budget; i++)
6800                 pf->msix_entries[i].entry = i;
6801         vec = i40e_reserve_msix_vectors(pf, v_budget);
6802
6803         if (vec != v_budget) {
6804                 /* If we have limited resources, we will start with no vectors
6805                  * for the special features and then allocate vectors to some
6806                  * of these features based on the policy and at the end disable
6807                  * the features that did not get any vectors.
6808                  */
6809 #ifdef I40E_FCOE
6810                 pf->num_fcoe_qps = 0;
6811                 pf->num_fcoe_msix = 0;
6812 #endif
6813                 pf->num_vmdq_msix = 0;
6814         }
6815
6816         if (vec < I40E_MIN_MSIX) {
6817                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6818                 kfree(pf->msix_entries);
6819                 pf->msix_entries = NULL;
6820                 return -ENODEV;
6821
6822         } else if (vec == I40E_MIN_MSIX) {
6823                 /* Adjust for minimal MSIX use */
6824                 pf->num_vmdq_vsis = 0;
6825                 pf->num_vmdq_qps = 0;
6826                 pf->num_lan_qps = 1;
6827                 pf->num_lan_msix = 1;
6828
6829         } else if (vec != v_budget) {
6830                 /* reserve the misc vector */
6831                 vec--;
6832
6833                 /* Scale vector usage down */
6834                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
6835                 pf->num_vmdq_vsis = 1;
6836
6837                 /* partition out the remaining vectors */
6838                 switch (vec) {
6839                 case 2:
6840                         pf->num_lan_msix = 1;
6841                         break;
6842                 case 3:
6843 #ifdef I40E_FCOE
6844                         /* give one vector to FCoE */
6845                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6846                                 pf->num_lan_msix = 1;
6847                                 pf->num_fcoe_msix = 1;
6848                         }
6849 #else
6850                         pf->num_lan_msix = 2;
6851 #endif
6852                         break;
6853                 default:
6854 #ifdef I40E_FCOE
6855                         /* give one vector to FCoE */
6856                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6857                                 pf->num_fcoe_msix = 1;
6858                                 vec--;
6859                         }
6860 #endif
6861                         pf->num_lan_msix = min_t(int, (vec / 2),
6862                                                  pf->num_lan_qps);
6863                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
6864                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
6865                         break;
6866                 }
6867         }
6868
6869         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
6870             (pf->num_vmdq_msix == 0)) {
6871                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
6872                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
6873         }
6874 #ifdef I40E_FCOE
6875
6876         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
6877                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
6878                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
6879         }
6880 #endif
6881         return err;
6882 }
6883
6884 /**
6885  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
6886  * @vsi: the VSI being configured
6887  * @v_idx: index of the vector in the vsi struct
6888  *
6889  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
6890  **/
6891 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
6892 {
6893         struct i40e_q_vector *q_vector;
6894
6895         /* allocate q_vector */
6896         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
6897         if (!q_vector)
6898                 return -ENOMEM;
6899
6900         q_vector->vsi = vsi;
6901         q_vector->v_idx = v_idx;
6902         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
6903         if (vsi->netdev)
6904                 netif_napi_add(vsi->netdev, &q_vector->napi,
6905                                i40e_napi_poll, NAPI_POLL_WEIGHT);
6906
6907         q_vector->rx.latency_range = I40E_LOW_LATENCY;
6908         q_vector->tx.latency_range = I40E_LOW_LATENCY;
6909
6910         /* tie q_vector and vsi together */
6911         vsi->q_vectors[v_idx] = q_vector;
6912
6913         return 0;
6914 }
6915
6916 /**
6917  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
6918  * @vsi: the VSI being configured
6919  *
6920  * We allocate one q_vector per queue interrupt.  If allocation fails we
6921  * return -ENOMEM.
6922  **/
6923 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
6924 {
6925         struct i40e_pf *pf = vsi->back;
6926         int v_idx, num_q_vectors;
6927         int err;
6928
6929         /* if not MSIX, give the one vector only to the LAN VSI */
6930         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6931                 num_q_vectors = vsi->num_q_vectors;
6932         else if (vsi == pf->vsi[pf->lan_vsi])
6933                 num_q_vectors = 1;
6934         else
6935                 return -EINVAL;
6936
6937         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
6938                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
6939                 if (err)
6940                         goto err_out;
6941         }
6942
6943         return 0;
6944
6945 err_out:
6946         while (v_idx--)
6947                 i40e_free_q_vector(vsi, v_idx);
6948
6949         return err;
6950 }
6951
6952 /**
6953  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
6954  * @pf: board private structure to initialize
6955  **/
6956 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
6957 {
6958         int err = 0;
6959
6960         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
6961                 err = i40e_init_msix(pf);
6962                 if (err) {
6963                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
6964 #ifdef I40E_FCOE
6965                                        I40E_FLAG_FCOE_ENABLED   |
6966 #endif
6967                                        I40E_FLAG_RSS_ENABLED    |
6968                                        I40E_FLAG_DCB_CAPABLE    |
6969                                        I40E_FLAG_SRIOV_ENABLED  |
6970                                        I40E_FLAG_FD_SB_ENABLED  |
6971                                        I40E_FLAG_FD_ATR_ENABLED |
6972                                        I40E_FLAG_VMDQ_ENABLED);
6973
6974                         /* rework the queue expectations without MSIX */
6975                         i40e_determine_queue_usage(pf);
6976                 }
6977         }
6978
6979         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
6980             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
6981                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
6982                 err = pci_enable_msi(pf->pdev);
6983                 if (err) {
6984                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
6985                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
6986                 }
6987         }
6988
6989         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
6990                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
6991
6992         /* track first vector for misc interrupts */
6993         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
6994 }
6995
6996 /**
6997  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
6998  * @pf: board private structure
6999  *
7000  * This sets up the handler for MSIX 0, which is used to manage the
7001  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7002  * when in MSI or Legacy interrupt mode.
7003  **/
7004 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7005 {
7006         struct i40e_hw *hw = &pf->hw;
7007         int err = 0;
7008
7009         /* Only request the irq if this is the first time through, and
7010          * not when we're rebuilding after a Reset
7011          */
7012         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7013                 err = request_irq(pf->msix_entries[0].vector,
7014                                   i40e_intr, 0, pf->misc_int_name, pf);
7015                 if (err) {
7016                         dev_info(&pf->pdev->dev,
7017                                  "request_irq for %s failed: %d\n",
7018                                  pf->misc_int_name, err);
7019                         return -EFAULT;
7020                 }
7021         }
7022
7023         i40e_enable_misc_int_causes(hw);
7024
7025         /* associate no queues to the misc vector */
7026         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7027         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7028
7029         i40e_flush(hw);
7030
7031         i40e_irq_dynamic_enable_icr0(pf);
7032
7033         return err;
7034 }
7035
7036 /**
7037  * i40e_config_rss - Prepare for RSS if used
7038  * @pf: board private structure
7039  **/
7040 static int i40e_config_rss(struct i40e_pf *pf)
7041 {
7042         u32 rss_key[I40E_PFQF_HKEY_MAX_INDEX + 1];
7043         struct i40e_hw *hw = &pf->hw;
7044         u32 lut = 0;
7045         int i, j;
7046         u64 hena;
7047         u32 reg_val;
7048
7049         netdev_rss_key_fill(rss_key, sizeof(rss_key));
7050         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7051                 wr32(hw, I40E_PFQF_HKEY(i), rss_key[i]);
7052
7053         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7054         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7055                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7056         hena |= I40E_DEFAULT_RSS_HENA;
7057         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7058         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7059
7060         /* Check capability and Set table size and register per hw expectation*/
7061         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7062         if (hw->func_caps.rss_table_size == 512) {
7063                 reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7064                 pf->rss_table_size = 512;
7065         } else {
7066                 pf->rss_table_size = 128;
7067                 reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7068         }
7069         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7070
7071         /* Populate the LUT with max no. of queues in round robin fashion */
7072         for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
7073
7074                 /* The assumption is that lan qp count will be the highest
7075                  * qp count for any PF VSI that needs RSS.
7076                  * If multiple VSIs need RSS support, all the qp counts
7077                  * for those VSIs should be a power of 2 for RSS to work.
7078                  * If LAN VSI is the only consumer for RSS then this requirement
7079                  * is not necessary.
7080                  */
7081                 if (j == pf->rss_size)
7082                         j = 0;
7083                 /* lut = 4-byte sliding window of 4 lut entries */
7084                 lut = (lut << 8) | (j &
7085                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
7086                 /* On i = 3, we have 4 entries in lut; write to the register */
7087                 if ((i & 3) == 3)
7088                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
7089         }
7090         i40e_flush(hw);
7091
7092         return 0;
7093 }
7094
7095 /**
7096  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7097  * @pf: board private structure
7098  * @queue_count: the requested queue count for rss.
7099  *
7100  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7101  * count which may be different from the requested queue count.
7102  **/
7103 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7104 {
7105         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7106                 return 0;
7107
7108         queue_count = min_t(int, queue_count, pf->rss_size_max);
7109
7110         if (queue_count != pf->rss_size) {
7111                 i40e_prep_for_reset(pf);
7112
7113                 pf->rss_size = queue_count;
7114
7115                 i40e_reset_and_rebuild(pf, true);
7116                 i40e_config_rss(pf);
7117         }
7118         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7119         return pf->rss_size;
7120 }
7121
7122 /**
7123  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7124  * @pf: board private structure to initialize
7125  *
7126  * i40e_sw_init initializes the Adapter private data structure.
7127  * Fields are initialized based on PCI device information and
7128  * OS network device settings (MTU size).
7129  **/
7130 static int i40e_sw_init(struct i40e_pf *pf)
7131 {
7132         int err = 0;
7133         int size;
7134
7135         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7136                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7137         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7138         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7139                 if (I40E_DEBUG_USER & debug)
7140                         pf->hw.debug_mask = debug;
7141                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7142                                                 I40E_DEFAULT_MSG_ENABLE);
7143         }
7144
7145         /* Set default capability flags */
7146         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7147                     I40E_FLAG_MSI_ENABLED     |
7148                     I40E_FLAG_MSIX_ENABLED    |
7149                     I40E_FLAG_RX_1BUF_ENABLED;
7150
7151         /* Set default ITR */
7152         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7153         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7154
7155         /* Depending on PF configurations, it is possible that the RSS
7156          * maximum might end up larger than the available queues
7157          */
7158         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
7159         pf->rss_size = 1;
7160         pf->rss_size_max = min_t(int, pf->rss_size_max,
7161                                  pf->hw.func_caps.num_tx_qp);
7162         if (pf->hw.func_caps.rss) {
7163                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7164                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7165         }
7166
7167         /* MFP mode enabled */
7168         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
7169                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7170                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7171         }
7172
7173         /* FW/NVM is not yet fixed in this regard */
7174         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7175             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7176                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7177                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7178                 /* Setup a counter for fd_atr per pf */
7179                 pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
7180                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7181                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7182                         /* Setup a counter for fd_sb per pf */
7183                         pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
7184                 } else {
7185                         dev_info(&pf->pdev->dev,
7186                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7187                 }
7188                 pf->fdir_pf_filter_count =
7189                                  pf->hw.func_caps.fd_filters_guaranteed;
7190                 pf->hw.fdir_shared_filter_count =
7191                                  pf->hw.func_caps.fd_filters_best_effort;
7192         }
7193
7194         if (pf->hw.func_caps.vmdq) {
7195                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7196                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7197                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
7198         }
7199
7200 #ifdef I40E_FCOE
7201         err = i40e_init_pf_fcoe(pf);
7202         if (err)
7203                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7204
7205 #endif /* I40E_FCOE */
7206 #ifdef CONFIG_PCI_IOV
7207         if (pf->hw.func_caps.num_vfs) {
7208                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7209                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7210                 pf->num_req_vfs = min_t(int,
7211                                         pf->hw.func_caps.num_vfs,
7212                                         I40E_MAX_VF_COUNT);
7213         }
7214 #endif /* CONFIG_PCI_IOV */
7215         pf->eeprom_version = 0xDEAD;
7216         pf->lan_veb = I40E_NO_VEB;
7217         pf->lan_vsi = I40E_NO_VSI;
7218
7219         /* set up queue assignment tracking */
7220         size = sizeof(struct i40e_lump_tracking)
7221                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7222         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7223         if (!pf->qp_pile) {
7224                 err = -ENOMEM;
7225                 goto sw_init_done;
7226         }
7227         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7228         pf->qp_pile->search_hint = 0;
7229
7230         /* set up vector assignment tracking */
7231         size = sizeof(struct i40e_lump_tracking)
7232                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
7233         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7234         if (!pf->irq_pile) {
7235                 kfree(pf->qp_pile);
7236                 err = -ENOMEM;
7237                 goto sw_init_done;
7238         }
7239         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
7240         pf->irq_pile->search_hint = 0;
7241
7242         pf->tx_timeout_recovery_level = 1;
7243
7244         mutex_init(&pf->switch_mutex);
7245
7246 sw_init_done:
7247         return err;
7248 }
7249
7250 /**
7251  * i40e_set_ntuple - set the ntuple feature flag and take action
7252  * @pf: board private structure to initialize
7253  * @features: the feature set that the stack is suggesting
7254  *
7255  * returns a bool to indicate if reset needs to happen
7256  **/
7257 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7258 {
7259         bool need_reset = false;
7260
7261         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7262          * the state changed, we need to reset.
7263          */
7264         if (features & NETIF_F_NTUPLE) {
7265                 /* Enable filters and mark for reset */
7266                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7267                         need_reset = true;
7268                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7269         } else {
7270                 /* turn off filters, mark for reset and clear SW filter list */
7271                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7272                         need_reset = true;
7273                         i40e_fdir_filter_exit(pf);
7274                 }
7275                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7276                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7277                 /* reset fd counters */
7278                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7279                 pf->fdir_pf_active_filters = 0;
7280                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7281                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7282                 /* if ATR was auto disabled it can be re-enabled. */
7283                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
7284                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
7285                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
7286         }
7287         return need_reset;
7288 }
7289
7290 /**
7291  * i40e_set_features - set the netdev feature flags
7292  * @netdev: ptr to the netdev being adjusted
7293  * @features: the feature set that the stack is suggesting
7294  **/
7295 static int i40e_set_features(struct net_device *netdev,
7296                              netdev_features_t features)
7297 {
7298         struct i40e_netdev_priv *np = netdev_priv(netdev);
7299         struct i40e_vsi *vsi = np->vsi;
7300         struct i40e_pf *pf = vsi->back;
7301         bool need_reset;
7302
7303         if (features & NETIF_F_HW_VLAN_CTAG_RX)
7304                 i40e_vlan_stripping_enable(vsi);
7305         else
7306                 i40e_vlan_stripping_disable(vsi);
7307
7308         need_reset = i40e_set_ntuple(pf, features);
7309
7310         if (need_reset)
7311                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7312
7313         return 0;
7314 }
7315
7316 #ifdef CONFIG_I40E_VXLAN
7317 /**
7318  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
7319  * @pf: board private structure
7320  * @port: The UDP port to look up
7321  *
7322  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
7323  **/
7324 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
7325 {
7326         u8 i;
7327
7328         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7329                 if (pf->vxlan_ports[i] == port)
7330                         return i;
7331         }
7332
7333         return i;
7334 }
7335
7336 /**
7337  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
7338  * @netdev: This physical port's netdev
7339  * @sa_family: Socket Family that VXLAN is notifying us about
7340  * @port: New UDP port number that VXLAN started listening to
7341  **/
7342 static void i40e_add_vxlan_port(struct net_device *netdev,
7343                                 sa_family_t sa_family, __be16 port)
7344 {
7345         struct i40e_netdev_priv *np = netdev_priv(netdev);
7346         struct i40e_vsi *vsi = np->vsi;
7347         struct i40e_pf *pf = vsi->back;
7348         u8 next_idx;
7349         u8 idx;
7350
7351         if (sa_family == AF_INET6)
7352                 return;
7353
7354         idx = i40e_get_vxlan_port_idx(pf, port);
7355
7356         /* Check if port already exists */
7357         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7358                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
7359                 return;
7360         }
7361
7362         /* Now check if there is space to add the new port */
7363         next_idx = i40e_get_vxlan_port_idx(pf, 0);
7364
7365         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7366                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
7367                             ntohs(port));
7368                 return;
7369         }
7370
7371         /* New port: add it and mark its index in the bitmap */
7372         pf->vxlan_ports[next_idx] = port;
7373         pf->pending_vxlan_bitmap |= (1 << next_idx);
7374
7375         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7376 }
7377
7378 /**
7379  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
7380  * @netdev: This physical port's netdev
7381  * @sa_family: Socket Family that VXLAN is notifying us about
7382  * @port: UDP port number that VXLAN stopped listening to
7383  **/
7384 static void i40e_del_vxlan_port(struct net_device *netdev,
7385                                 sa_family_t sa_family, __be16 port)
7386 {
7387         struct i40e_netdev_priv *np = netdev_priv(netdev);
7388         struct i40e_vsi *vsi = np->vsi;
7389         struct i40e_pf *pf = vsi->back;
7390         u8 idx;
7391
7392         if (sa_family == AF_INET6)
7393                 return;
7394
7395         idx = i40e_get_vxlan_port_idx(pf, port);
7396
7397         /* Check if port already exists */
7398         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7399                 /* if port exists, set it to 0 (mark for deletion)
7400                  * and make it pending
7401                  */
7402                 pf->vxlan_ports[idx] = 0;
7403
7404                 pf->pending_vxlan_bitmap |= (1 << idx);
7405
7406                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7407         } else {
7408                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
7409                             ntohs(port));
7410         }
7411 }
7412
7413 #endif
7414 static int i40e_get_phys_port_id(struct net_device *netdev,
7415                                  struct netdev_phys_port_id *ppid)
7416 {
7417         struct i40e_netdev_priv *np = netdev_priv(netdev);
7418         struct i40e_pf *pf = np->vsi->back;
7419         struct i40e_hw *hw = &pf->hw;
7420
7421         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
7422                 return -EOPNOTSUPP;
7423
7424         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
7425         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
7426
7427         return 0;
7428 }
7429
7430 #ifdef HAVE_FDB_OPS
7431 #ifdef USE_CONST_DEV_UC_CHAR
7432 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
7433                             struct net_device *dev,
7434                             const unsigned char *addr,
7435                             u16 flags)
7436 #else
7437 static int i40e_ndo_fdb_add(struct ndmsg *ndm,
7438                             struct net_device *dev,
7439                             unsigned char *addr,
7440                             u16 flags)
7441 #endif
7442 {
7443         struct i40e_netdev_priv *np = netdev_priv(dev);
7444         struct i40e_pf *pf = np->vsi->back;
7445         int err = 0;
7446
7447         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
7448                 return -EOPNOTSUPP;
7449
7450         /* Hardware does not support aging addresses so if a
7451          * ndm_state is given only allow permanent addresses
7452          */
7453         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
7454                 netdev_info(dev, "FDB only supports static addresses\n");
7455                 return -EINVAL;
7456         }
7457
7458         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
7459                 err = dev_uc_add_excl(dev, addr);
7460         else if (is_multicast_ether_addr(addr))
7461                 err = dev_mc_add_excl(dev, addr);
7462         else
7463                 err = -EINVAL;
7464
7465         /* Only return duplicate errors if NLM_F_EXCL is set */
7466         if (err == -EEXIST && !(flags & NLM_F_EXCL))
7467                 err = 0;
7468
7469         return err;
7470 }
7471
7472 #ifndef USE_DEFAULT_FDB_DEL_DUMP
7473 #ifdef USE_CONST_DEV_UC_CHAR
7474 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
7475                             struct net_device *dev,
7476                             const unsigned char *addr)
7477 #else
7478 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
7479                             struct net_device *dev,
7480                             unsigned char *addr)
7481 #endif
7482 {
7483         struct i40e_netdev_priv *np = netdev_priv(dev);
7484         struct i40e_pf *pf = np->vsi->back;
7485         int err = -EOPNOTSUPP;
7486
7487         if (ndm->ndm_state & NUD_PERMANENT) {
7488                 netdev_info(dev, "FDB only supports static addresses\n");
7489                 return -EINVAL;
7490         }
7491
7492         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
7493                 if (is_unicast_ether_addr(addr))
7494                         err = dev_uc_del(dev, addr);
7495                 else if (is_multicast_ether_addr(addr))
7496                         err = dev_mc_del(dev, addr);
7497                 else
7498                         err = -EINVAL;
7499         }
7500
7501         return err;
7502 }
7503
7504 static int i40e_ndo_fdb_dump(struct sk_buff *skb,
7505                              struct netlink_callback *cb,
7506                              struct net_device *dev,
7507                              struct net_device *filter_dev,
7508                              int idx)
7509 {
7510         struct i40e_netdev_priv *np = netdev_priv(dev);
7511         struct i40e_pf *pf = np->vsi->back;
7512
7513         if (pf->flags & I40E_FLAG_SRIOV_ENABLED)
7514                 idx = ndo_dflt_fdb_dump(skb, cb, dev, filter_dev, idx);
7515
7516         return idx;
7517 }
7518
7519 #endif /* USE_DEFAULT_FDB_DEL_DUMP */
7520 #endif /* HAVE_FDB_OPS */
7521 static const struct net_device_ops i40e_netdev_ops = {
7522         .ndo_open               = i40e_open,
7523         .ndo_stop               = i40e_close,
7524         .ndo_start_xmit         = i40e_lan_xmit_frame,
7525         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
7526         .ndo_set_rx_mode        = i40e_set_rx_mode,
7527         .ndo_validate_addr      = eth_validate_addr,
7528         .ndo_set_mac_address    = i40e_set_mac,
7529         .ndo_change_mtu         = i40e_change_mtu,
7530         .ndo_do_ioctl           = i40e_ioctl,
7531         .ndo_tx_timeout         = i40e_tx_timeout,
7532         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
7533         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
7534 #ifdef CONFIG_NET_POLL_CONTROLLER
7535         .ndo_poll_controller    = i40e_netpoll,
7536 #endif
7537         .ndo_setup_tc           = i40e_setup_tc,
7538 #ifdef I40E_FCOE
7539         .ndo_fcoe_enable        = i40e_fcoe_enable,
7540         .ndo_fcoe_disable       = i40e_fcoe_disable,
7541 #endif
7542         .ndo_set_features       = i40e_set_features,
7543         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
7544         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
7545         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
7546         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
7547         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
7548         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
7549 #ifdef CONFIG_I40E_VXLAN
7550         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
7551         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
7552 #endif
7553         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
7554 #ifdef HAVE_FDB_OPS
7555         .ndo_fdb_add            = i40e_ndo_fdb_add,
7556 #ifndef USE_DEFAULT_FDB_DEL_DUMP
7557         .ndo_fdb_del            = i40e_ndo_fdb_del,
7558         .ndo_fdb_dump           = i40e_ndo_fdb_dump,
7559 #endif
7560 #endif
7561 };
7562
7563 /**
7564  * i40e_config_netdev - Setup the netdev flags
7565  * @vsi: the VSI being configured
7566  *
7567  * Returns 0 on success, negative value on failure
7568  **/
7569 static int i40e_config_netdev(struct i40e_vsi *vsi)
7570 {
7571         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
7572         struct i40e_pf *pf = vsi->back;
7573         struct i40e_hw *hw = &pf->hw;
7574         struct i40e_netdev_priv *np;
7575         struct net_device *netdev;
7576         u8 mac_addr[ETH_ALEN];
7577         int etherdev_size;
7578
7579         etherdev_size = sizeof(struct i40e_netdev_priv);
7580         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
7581         if (!netdev)
7582                 return -ENOMEM;
7583
7584         vsi->netdev = netdev;
7585         np = netdev_priv(netdev);
7586         np->vsi = vsi;
7587
7588         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
7589                                   NETIF_F_GSO_UDP_TUNNEL |
7590                                   NETIF_F_TSO;
7591
7592         netdev->features = NETIF_F_SG                  |
7593                            NETIF_F_IP_CSUM             |
7594                            NETIF_F_SCTP_CSUM           |
7595                            NETIF_F_HIGHDMA             |
7596                            NETIF_F_GSO_UDP_TUNNEL      |
7597                            NETIF_F_HW_VLAN_CTAG_TX     |
7598                            NETIF_F_HW_VLAN_CTAG_RX     |
7599                            NETIF_F_HW_VLAN_CTAG_FILTER |
7600                            NETIF_F_IPV6_CSUM           |
7601                            NETIF_F_TSO                 |
7602                            NETIF_F_TSO_ECN             |
7603                            NETIF_F_TSO6                |
7604                            NETIF_F_RXCSUM              |
7605                            NETIF_F_RXHASH              |
7606                            0;
7607
7608         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
7609                 netdev->features |= NETIF_F_NTUPLE;
7610
7611         /* copy netdev features into list of user selectable features */
7612         netdev->hw_features |= netdev->features;
7613
7614         if (vsi->type == I40E_VSI_MAIN) {
7615                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
7616                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
7617                 /* The following steps are necessary to prevent reception
7618                  * of tagged packets - some older NVM configurations load a
7619                  * default a MAC-VLAN filter that accepts any tagged packet
7620                  * which must be replaced by a normal filter.
7621                  */
7622                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
7623                         i40e_add_filter(vsi, mac_addr,
7624                                         I40E_VLAN_ANY, false, true);
7625         } else {
7626                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
7627                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
7628                          pf->vsi[pf->lan_vsi]->netdev->name);
7629                 random_ether_addr(mac_addr);
7630                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
7631         }
7632         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
7633
7634         ether_addr_copy(netdev->dev_addr, mac_addr);
7635         ether_addr_copy(netdev->perm_addr, mac_addr);
7636         /* vlan gets same features (except vlan offload)
7637          * after any tweaks for specific VSI types
7638          */
7639         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
7640                                                      NETIF_F_HW_VLAN_CTAG_RX |
7641                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
7642         netdev->priv_flags |= IFF_UNICAST_FLT;
7643         netdev->priv_flags |= IFF_SUPP_NOFCS;
7644         /* Setup netdev TC information */
7645         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
7646
7647         netdev->netdev_ops = &i40e_netdev_ops;
7648         netdev->watchdog_timeo = 5 * HZ;
7649         i40e_set_ethtool_ops(netdev);
7650 #ifdef I40E_FCOE
7651         i40e_fcoe_config_netdev(netdev, vsi);
7652 #endif
7653
7654         return 0;
7655 }
7656
7657 /**
7658  * i40e_vsi_delete - Delete a VSI from the switch
7659  * @vsi: the VSI being removed
7660  *
7661  * Returns 0 on success, negative value on failure
7662  **/
7663 static void i40e_vsi_delete(struct i40e_vsi *vsi)
7664 {
7665         /* remove default VSI is not allowed */
7666         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
7667                 return;
7668
7669         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
7670 }
7671
7672 /**
7673  * i40e_add_vsi - Add a VSI to the switch
7674  * @vsi: the VSI being configured
7675  *
7676  * This initializes a VSI context depending on the VSI type to be added and
7677  * passes it down to the add_vsi aq command.
7678  **/
7679 static int i40e_add_vsi(struct i40e_vsi *vsi)
7680 {
7681         int ret = -ENODEV;
7682         struct i40e_mac_filter *f, *ftmp;
7683         struct i40e_pf *pf = vsi->back;
7684         struct i40e_hw *hw = &pf->hw;
7685         struct i40e_vsi_context ctxt;
7686         u8 enabled_tc = 0x1; /* TC0 enabled */
7687         int f_count = 0;
7688
7689         memset(&ctxt, 0, sizeof(ctxt));
7690         switch (vsi->type) {
7691         case I40E_VSI_MAIN:
7692                 /* The PF's main VSI is already setup as part of the
7693                  * device initialization, so we'll not bother with
7694                  * the add_vsi call, but we will retrieve the current
7695                  * VSI context.
7696                  */
7697                 ctxt.seid = pf->main_vsi_seid;
7698                 ctxt.pf_num = pf->hw.pf_id;
7699                 ctxt.vf_num = 0;
7700                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
7701                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7702                 if (ret) {
7703                         dev_info(&pf->pdev->dev,
7704                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
7705                                  ret, pf->hw.aq.asq_last_status);
7706                         return -ENOENT;
7707                 }
7708                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7709                 vsi->info.valid_sections = 0;
7710
7711                 vsi->seid = ctxt.seid;
7712                 vsi->id = ctxt.vsi_number;
7713
7714                 enabled_tc = i40e_pf_get_tc_map(pf);
7715
7716                 /* MFP mode setup queue map and update VSI */
7717                 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
7718                         memset(&ctxt, 0, sizeof(ctxt));
7719                         ctxt.seid = pf->main_vsi_seid;
7720                         ctxt.pf_num = pf->hw.pf_id;
7721                         ctxt.vf_num = 0;
7722                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
7723                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
7724                         if (ret) {
7725                                 dev_info(&pf->pdev->dev,
7726                                          "update vsi failed, aq_err=%d\n",
7727                                          pf->hw.aq.asq_last_status);
7728                                 ret = -ENOENT;
7729                                 goto err;
7730                         }
7731                         /* update the local VSI info queue map */
7732                         i40e_vsi_update_queue_map(vsi, &ctxt);
7733                         vsi->info.valid_sections = 0;
7734                 } else {
7735                         /* Default/Main VSI is only enabled for TC0
7736                          * reconfigure it to enable all TCs that are
7737                          * available on the port in SFP mode.
7738                          */
7739                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
7740                         if (ret) {
7741                                 dev_info(&pf->pdev->dev,
7742                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
7743                                          enabled_tc, ret,
7744                                          pf->hw.aq.asq_last_status);
7745                                 ret = -ENOENT;
7746                         }
7747                 }
7748                 break;
7749
7750         case I40E_VSI_FDIR:
7751                 ctxt.pf_num = hw->pf_id;
7752                 ctxt.vf_num = 0;
7753                 ctxt.uplink_seid = vsi->uplink_seid;
7754                 ctxt.connection_type = 0x1;     /* regular data port */
7755                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7756                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7757                 break;
7758
7759         case I40E_VSI_VMDQ2:
7760                 ctxt.pf_num = hw->pf_id;
7761                 ctxt.vf_num = 0;
7762                 ctxt.uplink_seid = vsi->uplink_seid;
7763                 ctxt.connection_type = 0x1;     /* regular data port */
7764                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
7765
7766                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7767
7768                 /* This VSI is connected to VEB so the switch_id
7769                  * should be set to zero by default.
7770                  */
7771                 ctxt.info.switch_id = 0;
7772                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7773
7774                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7775                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7776                 break;
7777
7778         case I40E_VSI_SRIOV:
7779                 ctxt.pf_num = hw->pf_id;
7780                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
7781                 ctxt.uplink_seid = vsi->uplink_seid;
7782                 ctxt.connection_type = 0x1;     /* regular data port */
7783                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
7784
7785                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7786
7787                 /* This VSI is connected to VEB so the switch_id
7788                  * should be set to zero by default.
7789                  */
7790                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7791
7792                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
7793                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
7794                 if (pf->vf[vsi->vf_id].spoofchk) {
7795                         ctxt.info.valid_sections |=
7796                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
7797                         ctxt.info.sec_flags |=
7798                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
7799                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
7800                 }
7801                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7802                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7803                 break;
7804
7805 #ifdef I40E_FCOE
7806         case I40E_VSI_FCOE:
7807                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
7808                 if (ret) {
7809                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
7810                         return ret;
7811                 }
7812                 break;
7813
7814 #endif /* I40E_FCOE */
7815         default:
7816                 return -ENODEV;
7817         }
7818
7819         if (vsi->type != I40E_VSI_MAIN) {
7820                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
7821                 if (ret) {
7822                         dev_info(&vsi->back->pdev->dev,
7823                                  "add vsi failed, aq_err=%d\n",
7824                                  vsi->back->hw.aq.asq_last_status);
7825                         ret = -ENOENT;
7826                         goto err;
7827                 }
7828                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7829                 vsi->info.valid_sections = 0;
7830                 vsi->seid = ctxt.seid;
7831                 vsi->id = ctxt.vsi_number;
7832         }
7833
7834         /* If macvlan filters already exist, force them to get loaded */
7835         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
7836                 f->changed = true;
7837                 f_count++;
7838
7839                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
7840                         struct i40e_aqc_remove_macvlan_element_data element;
7841
7842                         memset(&element, 0, sizeof(element));
7843                         ether_addr_copy(element.mac_addr, f->macaddr);
7844                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
7845                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
7846                                                      &element, 1, NULL);
7847                         if (ret) {
7848                                 /* some older FW has a different default */
7849                                 element.flags |=
7850                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
7851                                 i40e_aq_remove_macvlan(hw, vsi->seid,
7852                                                        &element, 1, NULL);
7853                         }
7854
7855                         i40e_aq_mac_address_write(hw,
7856                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
7857                                                   f->macaddr, NULL);
7858                 }
7859         }
7860         if (f_count) {
7861                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
7862                 pf->flags |= I40E_FLAG_FILTER_SYNC;
7863         }
7864
7865         /* Update VSI BW information */
7866         ret = i40e_vsi_get_bw_info(vsi);
7867         if (ret) {
7868                 dev_info(&pf->pdev->dev,
7869                          "couldn't get vsi bw info, err %d, aq_err %d\n",
7870                          ret, pf->hw.aq.asq_last_status);
7871                 /* VSI is already added so not tearing that up */
7872                 ret = 0;
7873         }
7874
7875 err:
7876         return ret;
7877 }
7878
7879 /**
7880  * i40e_vsi_release - Delete a VSI and free its resources
7881  * @vsi: the VSI being removed
7882  *
7883  * Returns 0 on success or < 0 on error
7884  **/
7885 int i40e_vsi_release(struct i40e_vsi *vsi)
7886 {
7887         struct i40e_mac_filter *f, *ftmp;
7888         struct i40e_veb *veb = NULL;
7889         struct i40e_pf *pf;
7890         u16 uplink_seid;
7891         int i, n;
7892
7893         pf = vsi->back;
7894
7895         /* release of a VEB-owner or last VSI is not allowed */
7896         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
7897                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
7898                          vsi->seid, vsi->uplink_seid);
7899                 return -ENODEV;
7900         }
7901         if (vsi == pf->vsi[pf->lan_vsi] &&
7902             !test_bit(__I40E_DOWN, &pf->state)) {
7903                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
7904                 return -ENODEV;
7905         }
7906
7907         uplink_seid = vsi->uplink_seid;
7908         if (vsi->type != I40E_VSI_SRIOV) {
7909                 if (vsi->netdev_registered) {
7910                         vsi->netdev_registered = false;
7911                         if (vsi->netdev) {
7912                                 /* results in a call to i40e_close() */
7913                                 unregister_netdev(vsi->netdev);
7914                         }
7915                 } else {
7916                         i40e_vsi_close(vsi);
7917                 }
7918                 i40e_vsi_disable_irq(vsi);
7919         }
7920
7921         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
7922                 i40e_del_filter(vsi, f->macaddr, f->vlan,
7923                                 f->is_vf, f->is_netdev);
7924         i40e_sync_vsi_filters(vsi);
7925
7926         i40e_vsi_delete(vsi);
7927         i40e_vsi_free_q_vectors(vsi);
7928         if (vsi->netdev) {
7929                 free_netdev(vsi->netdev);
7930                 vsi->netdev = NULL;
7931         }
7932         i40e_vsi_clear_rings(vsi);
7933         i40e_vsi_clear(vsi);
7934
7935         /* If this was the last thing on the VEB, except for the
7936          * controlling VSI, remove the VEB, which puts the controlling
7937          * VSI onto the next level down in the switch.
7938          *
7939          * Well, okay, there's one more exception here: don't remove
7940          * the orphan VEBs yet.  We'll wait for an explicit remove request
7941          * from up the network stack.
7942          */
7943         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
7944                 if (pf->vsi[i] &&
7945                     pf->vsi[i]->uplink_seid == uplink_seid &&
7946                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7947                         n++;      /* count the VSIs */
7948                 }
7949         }
7950         for (i = 0; i < I40E_MAX_VEB; i++) {
7951                 if (!pf->veb[i])
7952                         continue;
7953                 if (pf->veb[i]->uplink_seid == uplink_seid)
7954                         n++;     /* count the VEBs */
7955                 if (pf->veb[i]->seid == uplink_seid)
7956                         veb = pf->veb[i];
7957         }
7958         if (n == 0 && veb && veb->uplink_seid != 0)
7959                 i40e_veb_release(veb);
7960
7961         return 0;
7962 }
7963
7964 /**
7965  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
7966  * @vsi: ptr to the VSI
7967  *
7968  * This should only be called after i40e_vsi_mem_alloc() which allocates the
7969  * corresponding SW VSI structure and initializes num_queue_pairs for the
7970  * newly allocated VSI.
7971  *
7972  * Returns 0 on success or negative on failure
7973  **/
7974 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
7975 {
7976         int ret = -ENOENT;
7977         struct i40e_pf *pf = vsi->back;
7978
7979         if (vsi->q_vectors[0]) {
7980                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
7981                          vsi->seid);
7982                 return -EEXIST;
7983         }
7984
7985         if (vsi->base_vector) {
7986                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
7987                          vsi->seid, vsi->base_vector);
7988                 return -EEXIST;
7989         }
7990
7991         ret = i40e_vsi_alloc_q_vectors(vsi);
7992         if (ret) {
7993                 dev_info(&pf->pdev->dev,
7994                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
7995                          vsi->num_q_vectors, vsi->seid, ret);
7996                 vsi->num_q_vectors = 0;
7997                 goto vector_setup_out;
7998         }
7999
8000         if (vsi->num_q_vectors)
8001                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8002                                                  vsi->num_q_vectors, vsi->idx);
8003         if (vsi->base_vector < 0) {
8004                 dev_info(&pf->pdev->dev,
8005                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8006                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8007                 i40e_vsi_free_q_vectors(vsi);
8008                 ret = -ENOENT;
8009                 goto vector_setup_out;
8010         }
8011
8012 vector_setup_out:
8013         return ret;
8014 }
8015
8016 /**
8017  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8018  * @vsi: pointer to the vsi.
8019  *
8020  * This re-allocates a vsi's queue resources.
8021  *
8022  * Returns pointer to the successfully allocated and configured VSI sw struct
8023  * on success, otherwise returns NULL on failure.
8024  **/
8025 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8026 {
8027         struct i40e_pf *pf = vsi->back;
8028         u8 enabled_tc;
8029         int ret;
8030
8031         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8032         i40e_vsi_clear_rings(vsi);
8033
8034         i40e_vsi_free_arrays(vsi, false);
8035         i40e_set_num_rings_in_vsi(vsi);
8036         ret = i40e_vsi_alloc_arrays(vsi, false);
8037         if (ret)
8038                 goto err_vsi;
8039
8040         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8041         if (ret < 0) {
8042                 dev_info(&pf->pdev->dev,
8043                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8044                          vsi->alloc_queue_pairs, vsi->seid, ret);
8045                 goto err_vsi;
8046         }
8047         vsi->base_queue = ret;
8048
8049         /* Update the FW view of the VSI. Force a reset of TC and queue
8050          * layout configurations.
8051          */
8052         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8053         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8054         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8055         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8056
8057         /* assign it some queues */
8058         ret = i40e_alloc_rings(vsi);
8059         if (ret)
8060                 goto err_rings;
8061
8062         /* map all of the rings to the q_vectors */
8063         i40e_vsi_map_rings_to_vectors(vsi);
8064         return vsi;
8065
8066 err_rings:
8067         i40e_vsi_free_q_vectors(vsi);
8068         if (vsi->netdev_registered) {
8069                 vsi->netdev_registered = false;
8070                 unregister_netdev(vsi->netdev);
8071                 free_netdev(vsi->netdev);
8072                 vsi->netdev = NULL;
8073         }
8074         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8075 err_vsi:
8076         i40e_vsi_clear(vsi);
8077         return NULL;
8078 }
8079
8080 /**
8081  * i40e_vsi_setup - Set up a VSI by a given type
8082  * @pf: board private structure
8083  * @type: VSI type
8084  * @uplink_seid: the switch element to link to
8085  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8086  *
8087  * This allocates the sw VSI structure and its queue resources, then add a VSI
8088  * to the identified VEB.
8089  *
8090  * Returns pointer to the successfully allocated and configure VSI sw struct on
8091  * success, otherwise returns NULL on failure.
8092  **/
8093 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8094                                 u16 uplink_seid, u32 param1)
8095 {
8096         struct i40e_vsi *vsi = NULL;
8097         struct i40e_veb *veb = NULL;
8098         int ret, i;
8099         int v_idx;
8100
8101         /* The requested uplink_seid must be either
8102          *     - the PF's port seid
8103          *              no VEB is needed because this is the PF
8104          *              or this is a Flow Director special case VSI
8105          *     - seid of an existing VEB
8106          *     - seid of a VSI that owns an existing VEB
8107          *     - seid of a VSI that doesn't own a VEB
8108          *              a new VEB is created and the VSI becomes the owner
8109          *     - seid of the PF VSI, which is what creates the first VEB
8110          *              this is a special case of the previous
8111          *
8112          * Find which uplink_seid we were given and create a new VEB if needed
8113          */
8114         for (i = 0; i < I40E_MAX_VEB; i++) {
8115                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8116                         veb = pf->veb[i];
8117                         break;
8118                 }
8119         }
8120
8121         if (!veb && uplink_seid != pf->mac_seid) {
8122
8123                 for (i = 0; i < pf->num_alloc_vsi; i++) {
8124                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8125                                 vsi = pf->vsi[i];
8126                                 break;
8127                         }
8128                 }
8129                 if (!vsi) {
8130                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8131                                  uplink_seid);
8132                         return NULL;
8133                 }
8134
8135                 if (vsi->uplink_seid == pf->mac_seid)
8136                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8137                                              vsi->tc_config.enabled_tc);
8138                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8139                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8140                                              vsi->tc_config.enabled_tc);
8141
8142                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8143                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8144                                 veb = pf->veb[i];
8145                 }
8146                 if (!veb) {
8147                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
8148                         return NULL;
8149                 }
8150
8151                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8152                 uplink_seid = veb->seid;
8153         }
8154
8155         /* get vsi sw struct */
8156         v_idx = i40e_vsi_mem_alloc(pf, type);
8157         if (v_idx < 0)
8158                 goto err_alloc;
8159         vsi = pf->vsi[v_idx];
8160         if (!vsi)
8161                 goto err_alloc;
8162         vsi->type = type;
8163         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
8164
8165         if (type == I40E_VSI_MAIN)
8166                 pf->lan_vsi = v_idx;
8167         else if (type == I40E_VSI_SRIOV)
8168                 vsi->vf_id = param1;
8169         /* assign it some queues */
8170         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
8171                                 vsi->idx);
8172         if (ret < 0) {
8173                 dev_info(&pf->pdev->dev,
8174                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8175                          vsi->alloc_queue_pairs, vsi->seid, ret);
8176                 goto err_vsi;
8177         }
8178         vsi->base_queue = ret;
8179
8180         /* get a VSI from the hardware */
8181         vsi->uplink_seid = uplink_seid;
8182         ret = i40e_add_vsi(vsi);
8183         if (ret)
8184                 goto err_vsi;
8185
8186         switch (vsi->type) {
8187         /* setup the netdev if needed */
8188         case I40E_VSI_MAIN:
8189         case I40E_VSI_VMDQ2:
8190         case I40E_VSI_FCOE:
8191                 ret = i40e_config_netdev(vsi);
8192                 if (ret)
8193                         goto err_netdev;
8194                 ret = register_netdev(vsi->netdev);
8195                 if (ret)
8196                         goto err_netdev;
8197                 vsi->netdev_registered = true;
8198                 netif_carrier_off(vsi->netdev);
8199 #ifdef CONFIG_I40E_DCB
8200                 /* Setup DCB netlink interface */
8201                 i40e_dcbnl_setup(vsi);
8202 #endif /* CONFIG_I40E_DCB */
8203                 /* fall through */
8204
8205         case I40E_VSI_FDIR:
8206                 /* set up vectors and rings if needed */
8207                 ret = i40e_vsi_setup_vectors(vsi);
8208                 if (ret)
8209                         goto err_msix;
8210
8211                 ret = i40e_alloc_rings(vsi);
8212                 if (ret)
8213                         goto err_rings;
8214
8215                 /* map all of the rings to the q_vectors */
8216                 i40e_vsi_map_rings_to_vectors(vsi);
8217
8218                 i40e_vsi_reset_stats(vsi);
8219                 break;
8220
8221         default:
8222                 /* no netdev or rings for the other VSI types */
8223                 break;
8224         }
8225
8226         return vsi;
8227
8228 err_rings:
8229         i40e_vsi_free_q_vectors(vsi);
8230 err_msix:
8231         if (vsi->netdev_registered) {
8232                 vsi->netdev_registered = false;
8233                 unregister_netdev(vsi->netdev);
8234                 free_netdev(vsi->netdev);
8235                 vsi->netdev = NULL;
8236         }
8237 err_netdev:
8238         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8239 err_vsi:
8240         i40e_vsi_clear(vsi);
8241 err_alloc:
8242         return NULL;
8243 }
8244
8245 /**
8246  * i40e_veb_get_bw_info - Query VEB BW information
8247  * @veb: the veb to query
8248  *
8249  * Query the Tx scheduler BW configuration data for given VEB
8250  **/
8251 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
8252 {
8253         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
8254         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
8255         struct i40e_pf *pf = veb->pf;
8256         struct i40e_hw *hw = &pf->hw;
8257         u32 tc_bw_max;
8258         int ret = 0;
8259         int i;
8260
8261         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
8262                                                   &bw_data, NULL);
8263         if (ret) {
8264                 dev_info(&pf->pdev->dev,
8265                          "query veb bw config failed, aq_err=%d\n",
8266                          hw->aq.asq_last_status);
8267                 goto out;
8268         }
8269
8270         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
8271                                                    &ets_data, NULL);
8272         if (ret) {
8273                 dev_info(&pf->pdev->dev,
8274                          "query veb bw ets config failed, aq_err=%d\n",
8275                          hw->aq.asq_last_status);
8276                 goto out;
8277         }
8278
8279         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
8280         veb->bw_max_quanta = ets_data.tc_bw_max;
8281         veb->is_abs_credits = bw_data.absolute_credits_enable;
8282         veb->enabled_tc = ets_data.tc_valid_bits;
8283         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
8284                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
8285         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
8286                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
8287                 veb->bw_tc_limit_credits[i] =
8288                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
8289                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
8290         }
8291
8292 out:
8293         return ret;
8294 }
8295
8296 /**
8297  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
8298  * @pf: board private structure
8299  *
8300  * On error: returns error code (negative)
8301  * On success: returns vsi index in PF (positive)
8302  **/
8303 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
8304 {
8305         int ret = -ENOENT;
8306         struct i40e_veb *veb;
8307         int i;
8308
8309         /* Need to protect the allocation of switch elements at the PF level */
8310         mutex_lock(&pf->switch_mutex);
8311
8312         /* VEB list may be fragmented if VEB creation/destruction has
8313          * been happening.  We can afford to do a quick scan to look
8314          * for any free slots in the list.
8315          *
8316          * find next empty veb slot, looping back around if necessary
8317          */
8318         i = 0;
8319         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
8320                 i++;
8321         if (i >= I40E_MAX_VEB) {
8322                 ret = -ENOMEM;
8323                 goto err_alloc_veb;  /* out of VEB slots! */
8324         }
8325
8326         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
8327         if (!veb) {
8328                 ret = -ENOMEM;
8329                 goto err_alloc_veb;
8330         }
8331         veb->pf = pf;
8332         veb->idx = i;
8333         veb->enabled_tc = 1;
8334
8335         pf->veb[i] = veb;
8336         ret = i;
8337 err_alloc_veb:
8338         mutex_unlock(&pf->switch_mutex);
8339         return ret;
8340 }
8341
8342 /**
8343  * i40e_switch_branch_release - Delete a branch of the switch tree
8344  * @branch: where to start deleting
8345  *
8346  * This uses recursion to find the tips of the branch to be
8347  * removed, deleting until we get back to and can delete this VEB.
8348  **/
8349 static void i40e_switch_branch_release(struct i40e_veb *branch)
8350 {
8351         struct i40e_pf *pf = branch->pf;
8352         u16 branch_seid = branch->seid;
8353         u16 veb_idx = branch->idx;
8354         int i;
8355
8356         /* release any VEBs on this VEB - RECURSION */
8357         for (i = 0; i < I40E_MAX_VEB; i++) {
8358                 if (!pf->veb[i])
8359                         continue;
8360                 if (pf->veb[i]->uplink_seid == branch->seid)
8361                         i40e_switch_branch_release(pf->veb[i]);
8362         }
8363
8364         /* Release the VSIs on this VEB, but not the owner VSI.
8365          *
8366          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
8367          *       the VEB itself, so don't use (*branch) after this loop.
8368          */
8369         for (i = 0; i < pf->num_alloc_vsi; i++) {
8370                 if (!pf->vsi[i])
8371                         continue;
8372                 if (pf->vsi[i]->uplink_seid == branch_seid &&
8373                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8374                         i40e_vsi_release(pf->vsi[i]);
8375                 }
8376         }
8377
8378         /* There's one corner case where the VEB might not have been
8379          * removed, so double check it here and remove it if needed.
8380          * This case happens if the veb was created from the debugfs
8381          * commands and no VSIs were added to it.
8382          */
8383         if (pf->veb[veb_idx])
8384                 i40e_veb_release(pf->veb[veb_idx]);
8385 }
8386
8387 /**
8388  * i40e_veb_clear - remove veb struct
8389  * @veb: the veb to remove
8390  **/
8391 static void i40e_veb_clear(struct i40e_veb *veb)
8392 {
8393         if (!veb)
8394                 return;
8395
8396         if (veb->pf) {
8397                 struct i40e_pf *pf = veb->pf;
8398
8399                 mutex_lock(&pf->switch_mutex);
8400                 if (pf->veb[veb->idx] == veb)
8401                         pf->veb[veb->idx] = NULL;
8402                 mutex_unlock(&pf->switch_mutex);
8403         }
8404
8405         kfree(veb);
8406 }
8407
8408 /**
8409  * i40e_veb_release - Delete a VEB and free its resources
8410  * @veb: the VEB being removed
8411  **/
8412 void i40e_veb_release(struct i40e_veb *veb)
8413 {
8414         struct i40e_vsi *vsi = NULL;
8415         struct i40e_pf *pf;
8416         int i, n = 0;
8417
8418         pf = veb->pf;
8419
8420         /* find the remaining VSI and check for extras */
8421         for (i = 0; i < pf->num_alloc_vsi; i++) {
8422                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
8423                         n++;
8424                         vsi = pf->vsi[i];
8425                 }
8426         }
8427         if (n != 1) {
8428                 dev_info(&pf->pdev->dev,
8429                          "can't remove VEB %d with %d VSIs left\n",
8430                          veb->seid, n);
8431                 return;
8432         }
8433
8434         /* move the remaining VSI to uplink veb */
8435         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
8436         if (veb->uplink_seid) {
8437                 vsi->uplink_seid = veb->uplink_seid;
8438                 if (veb->uplink_seid == pf->mac_seid)
8439                         vsi->veb_idx = I40E_NO_VEB;
8440                 else
8441                         vsi->veb_idx = veb->veb_idx;
8442         } else {
8443                 /* floating VEB */
8444                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
8445                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
8446         }
8447
8448         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
8449         i40e_veb_clear(veb);
8450 }
8451
8452 /**
8453  * i40e_add_veb - create the VEB in the switch
8454  * @veb: the VEB to be instantiated
8455  * @vsi: the controlling VSI
8456  **/
8457 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
8458 {
8459         bool is_default = false;
8460         bool is_cloud = false;
8461         int ret;
8462
8463         /* get a VEB from the hardware */
8464         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
8465                               veb->enabled_tc, is_default,
8466                               is_cloud, &veb->seid, NULL);
8467         if (ret) {
8468                 dev_info(&veb->pf->pdev->dev,
8469                          "couldn't add VEB, err %d, aq_err %d\n",
8470                          ret, veb->pf->hw.aq.asq_last_status);
8471                 return -EPERM;
8472         }
8473
8474         /* get statistics counter */
8475         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
8476                                          &veb->stats_idx, NULL, NULL, NULL);
8477         if (ret) {
8478                 dev_info(&veb->pf->pdev->dev,
8479                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
8480                          ret, veb->pf->hw.aq.asq_last_status);
8481                 return -EPERM;
8482         }
8483         ret = i40e_veb_get_bw_info(veb);
8484         if (ret) {
8485                 dev_info(&veb->pf->pdev->dev,
8486                          "couldn't get VEB bw info, err %d, aq_err %d\n",
8487                          ret, veb->pf->hw.aq.asq_last_status);
8488                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
8489                 return -ENOENT;
8490         }
8491
8492         vsi->uplink_seid = veb->seid;
8493         vsi->veb_idx = veb->idx;
8494         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8495
8496         return 0;
8497 }
8498
8499 /**
8500  * i40e_veb_setup - Set up a VEB
8501  * @pf: board private structure
8502  * @flags: VEB setup flags
8503  * @uplink_seid: the switch element to link to
8504  * @vsi_seid: the initial VSI seid
8505  * @enabled_tc: Enabled TC bit-map
8506  *
8507  * This allocates the sw VEB structure and links it into the switch
8508  * It is possible and legal for this to be a duplicate of an already
8509  * existing VEB.  It is also possible for both uplink and vsi seids
8510  * to be zero, in order to create a floating VEB.
8511  *
8512  * Returns pointer to the successfully allocated VEB sw struct on
8513  * success, otherwise returns NULL on failure.
8514  **/
8515 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
8516                                 u16 uplink_seid, u16 vsi_seid,
8517                                 u8 enabled_tc)
8518 {
8519         struct i40e_veb *veb, *uplink_veb = NULL;
8520         int vsi_idx, veb_idx;
8521         int ret;
8522
8523         /* if one seid is 0, the other must be 0 to create a floating relay */
8524         if ((uplink_seid == 0 || vsi_seid == 0) &&
8525             (uplink_seid + vsi_seid != 0)) {
8526                 dev_info(&pf->pdev->dev,
8527                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
8528                          uplink_seid, vsi_seid);
8529                 return NULL;
8530         }
8531
8532         /* make sure there is such a vsi and uplink */
8533         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
8534                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
8535                         break;
8536         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
8537                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
8538                          vsi_seid);
8539                 return NULL;
8540         }
8541
8542         if (uplink_seid && uplink_seid != pf->mac_seid) {
8543                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
8544                         if (pf->veb[veb_idx] &&
8545                             pf->veb[veb_idx]->seid == uplink_seid) {
8546                                 uplink_veb = pf->veb[veb_idx];
8547                                 break;
8548                         }
8549                 }
8550                 if (!uplink_veb) {
8551                         dev_info(&pf->pdev->dev,
8552                                  "uplink seid %d not found\n", uplink_seid);
8553                         return NULL;
8554                 }
8555         }
8556
8557         /* get veb sw struct */
8558         veb_idx = i40e_veb_mem_alloc(pf);
8559         if (veb_idx < 0)
8560                 goto err_alloc;
8561         veb = pf->veb[veb_idx];
8562         veb->flags = flags;
8563         veb->uplink_seid = uplink_seid;
8564         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
8565         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
8566
8567         /* create the VEB in the switch */
8568         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
8569         if (ret)
8570                 goto err_veb;
8571         if (vsi_idx == pf->lan_vsi)
8572                 pf->lan_veb = veb->idx;
8573
8574         return veb;
8575
8576 err_veb:
8577         i40e_veb_clear(veb);
8578 err_alloc:
8579         return NULL;
8580 }
8581
8582 /**
8583  * i40e_setup_pf_switch_element - set pf vars based on switch type
8584  * @pf: board private structure
8585  * @ele: element we are building info from
8586  * @num_reported: total number of elements
8587  * @printconfig: should we print the contents
8588  *
8589  * helper function to assist in extracting a few useful SEID values.
8590  **/
8591 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
8592                                 struct i40e_aqc_switch_config_element_resp *ele,
8593                                 u16 num_reported, bool printconfig)
8594 {
8595         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
8596         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
8597         u8 element_type = ele->element_type;
8598         u16 seid = le16_to_cpu(ele->seid);
8599
8600         if (printconfig)
8601                 dev_info(&pf->pdev->dev,
8602                          "type=%d seid=%d uplink=%d downlink=%d\n",
8603                          element_type, seid, uplink_seid, downlink_seid);
8604
8605         switch (element_type) {
8606         case I40E_SWITCH_ELEMENT_TYPE_MAC:
8607                 pf->mac_seid = seid;
8608                 break;
8609         case I40E_SWITCH_ELEMENT_TYPE_VEB:
8610                 /* Main VEB? */
8611                 if (uplink_seid != pf->mac_seid)
8612                         break;
8613                 if (pf->lan_veb == I40E_NO_VEB) {
8614                         int v;
8615
8616                         /* find existing or else empty VEB */
8617                         for (v = 0; v < I40E_MAX_VEB; v++) {
8618                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
8619                                         pf->lan_veb = v;
8620                                         break;
8621                                 }
8622                         }
8623                         if (pf->lan_veb == I40E_NO_VEB) {
8624                                 v = i40e_veb_mem_alloc(pf);
8625                                 if (v < 0)
8626                                         break;
8627                                 pf->lan_veb = v;
8628                         }
8629                 }
8630
8631                 pf->veb[pf->lan_veb]->seid = seid;
8632                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
8633                 pf->veb[pf->lan_veb]->pf = pf;
8634                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
8635                 break;
8636         case I40E_SWITCH_ELEMENT_TYPE_VSI:
8637                 if (num_reported != 1)
8638                         break;
8639                 /* This is immediately after a reset so we can assume this is
8640                  * the PF's VSI
8641                  */
8642                 pf->mac_seid = uplink_seid;
8643                 pf->pf_seid = downlink_seid;
8644                 pf->main_vsi_seid = seid;
8645                 if (printconfig)
8646                         dev_info(&pf->pdev->dev,
8647                                  "pf_seid=%d main_vsi_seid=%d\n",
8648                                  pf->pf_seid, pf->main_vsi_seid);
8649                 break;
8650         case I40E_SWITCH_ELEMENT_TYPE_PF:
8651         case I40E_SWITCH_ELEMENT_TYPE_VF:
8652         case I40E_SWITCH_ELEMENT_TYPE_EMP:
8653         case I40E_SWITCH_ELEMENT_TYPE_BMC:
8654         case I40E_SWITCH_ELEMENT_TYPE_PE:
8655         case I40E_SWITCH_ELEMENT_TYPE_PA:
8656                 /* ignore these for now */
8657                 break;
8658         default:
8659                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
8660                          element_type, seid);
8661                 break;
8662         }
8663 }
8664
8665 /**
8666  * i40e_fetch_switch_configuration - Get switch config from firmware
8667  * @pf: board private structure
8668  * @printconfig: should we print the contents
8669  *
8670  * Get the current switch configuration from the device and
8671  * extract a few useful SEID values.
8672  **/
8673 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
8674 {
8675         struct i40e_aqc_get_switch_config_resp *sw_config;
8676         u16 next_seid = 0;
8677         int ret = 0;
8678         u8 *aq_buf;
8679         int i;
8680
8681         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
8682         if (!aq_buf)
8683                 return -ENOMEM;
8684
8685         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
8686         do {
8687                 u16 num_reported, num_total;
8688
8689                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
8690                                                 I40E_AQ_LARGE_BUF,
8691                                                 &next_seid, NULL);
8692                 if (ret) {
8693                         dev_info(&pf->pdev->dev,
8694                                  "get switch config failed %d aq_err=%x\n",
8695                                  ret, pf->hw.aq.asq_last_status);
8696                         kfree(aq_buf);
8697                         return -ENOENT;
8698                 }
8699
8700                 num_reported = le16_to_cpu(sw_config->header.num_reported);
8701                 num_total = le16_to_cpu(sw_config->header.num_total);
8702
8703                 if (printconfig)
8704                         dev_info(&pf->pdev->dev,
8705                                  "header: %d reported %d total\n",
8706                                  num_reported, num_total);
8707
8708                 for (i = 0; i < num_reported; i++) {
8709                         struct i40e_aqc_switch_config_element_resp *ele =
8710                                 &sw_config->element[i];
8711
8712                         i40e_setup_pf_switch_element(pf, ele, num_reported,
8713                                                      printconfig);
8714                 }
8715         } while (next_seid != 0);
8716
8717         kfree(aq_buf);
8718         return ret;
8719 }
8720
8721 /**
8722  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
8723  * @pf: board private structure
8724  * @reinit: if the Main VSI needs to re-initialized.
8725  *
8726  * Returns 0 on success, negative value on failure
8727  **/
8728 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
8729 {
8730         int ret;
8731
8732         /* find out what's out there already */
8733         ret = i40e_fetch_switch_configuration(pf, false);
8734         if (ret) {
8735                 dev_info(&pf->pdev->dev,
8736                          "couldn't fetch switch config, err %d, aq_err %d\n",
8737                          ret, pf->hw.aq.asq_last_status);
8738                 return ret;
8739         }
8740         i40e_pf_reset_stats(pf);
8741
8742         /* first time setup */
8743         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
8744                 struct i40e_vsi *vsi = NULL;
8745                 u16 uplink_seid;
8746
8747                 /* Set up the PF VSI associated with the PF's main VSI
8748                  * that is already in the HW switch
8749                  */
8750                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
8751                         uplink_seid = pf->veb[pf->lan_veb]->seid;
8752                 else
8753                         uplink_seid = pf->mac_seid;
8754                 if (pf->lan_vsi == I40E_NO_VSI)
8755                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
8756                 else if (reinit)
8757                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
8758                 if (!vsi) {
8759                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
8760                         i40e_fdir_teardown(pf);
8761                         return -EAGAIN;
8762                 }
8763         } else {
8764                 /* force a reset of TC and queue layout configurations */
8765                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8766                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8767                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8768                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8769         }
8770         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
8771
8772         i40e_fdir_sb_setup(pf);
8773
8774         /* Setup static PF queue filter control settings */
8775         ret = i40e_setup_pf_filter_control(pf);
8776         if (ret) {
8777                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
8778                          ret);
8779                 /* Failure here should not stop continuing other steps */
8780         }
8781
8782         /* enable RSS in the HW, even for only one queue, as the stack can use
8783          * the hash
8784          */
8785         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
8786                 i40e_config_rss(pf);
8787
8788         /* fill in link information and enable LSE reporting */
8789         i40e_update_link_info(&pf->hw, true);
8790         i40e_link_event(pf);
8791
8792         /* Initialize user-specific link properties */
8793         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8794                                   I40E_AQ_AN_COMPLETED) ? true : false);
8795
8796         /* fill in link information and enable LSE reporting */
8797         i40e_update_link_info(&pf->hw, true);
8798         i40e_link_event(pf);
8799
8800         /* Initialize user-specific link properties */
8801         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8802                                   I40E_AQ_AN_COMPLETED) ? true : false);
8803
8804         i40e_ptp_init(pf);
8805
8806         return ret;
8807 }
8808
8809 /**
8810  * i40e_determine_queue_usage - Work out queue distribution
8811  * @pf: board private structure
8812  **/
8813 static void i40e_determine_queue_usage(struct i40e_pf *pf)
8814 {
8815         int queues_left;
8816
8817         pf->num_lan_qps = 0;
8818 #ifdef I40E_FCOE
8819         pf->num_fcoe_qps = 0;
8820 #endif
8821
8822         /* Find the max queues to be put into basic use.  We'll always be
8823          * using TC0, whether or not DCB is running, and TC0 will get the
8824          * big RSS set.
8825          */
8826         queues_left = pf->hw.func_caps.num_tx_qp;
8827
8828         if ((queues_left == 1) ||
8829             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
8830                 /* one qp for PF, no queues for anything else */
8831                 queues_left = 0;
8832                 pf->rss_size = pf->num_lan_qps = 1;
8833
8834                 /* make sure all the fancies are disabled */
8835                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8836 #ifdef I40E_FCOE
8837                                I40E_FLAG_FCOE_ENABLED   |
8838 #endif
8839                                I40E_FLAG_FD_SB_ENABLED  |
8840                                I40E_FLAG_FD_ATR_ENABLED |
8841                                I40E_FLAG_DCB_CAPABLE    |
8842                                I40E_FLAG_SRIOV_ENABLED  |
8843                                I40E_FLAG_VMDQ_ENABLED);
8844         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
8845                                   I40E_FLAG_FD_SB_ENABLED |
8846                                   I40E_FLAG_FD_ATR_ENABLED |
8847                                   I40E_FLAG_DCB_CAPABLE))) {
8848                 /* one qp for PF */
8849                 pf->rss_size = pf->num_lan_qps = 1;
8850                 queues_left -= pf->num_lan_qps;
8851
8852                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8853 #ifdef I40E_FCOE
8854                                I40E_FLAG_FCOE_ENABLED   |
8855 #endif
8856                                I40E_FLAG_FD_SB_ENABLED  |
8857                                I40E_FLAG_FD_ATR_ENABLED |
8858                                I40E_FLAG_DCB_ENABLED    |
8859                                I40E_FLAG_VMDQ_ENABLED);
8860         } else {
8861                 /* Not enough queues for all TCs */
8862                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
8863                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
8864                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
8865                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
8866                 }
8867                 pf->num_lan_qps = pf->rss_size_max;
8868                 queues_left -= pf->num_lan_qps;
8869         }
8870
8871 #ifdef I40E_FCOE
8872         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
8873                 if (I40E_DEFAULT_FCOE <= queues_left) {
8874                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
8875                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
8876                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
8877                 } else {
8878                         pf->num_fcoe_qps = 0;
8879                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
8880                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
8881                 }
8882
8883                 queues_left -= pf->num_fcoe_qps;
8884         }
8885
8886 #endif
8887         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8888                 if (queues_left > 1) {
8889                         queues_left -= 1; /* save 1 queue for FD */
8890                 } else {
8891                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8892                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
8893                 }
8894         }
8895
8896         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8897             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
8898                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
8899                                         (queues_left / pf->num_vf_qps));
8900                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
8901         }
8902
8903         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
8904             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
8905                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
8906                                           (queues_left / pf->num_vmdq_qps));
8907                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
8908         }
8909
8910         pf->queues_left = queues_left;
8911 #ifdef I40E_FCOE
8912         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
8913 #endif
8914 }
8915
8916 /**
8917  * i40e_setup_pf_filter_control - Setup PF static filter control
8918  * @pf: PF to be setup
8919  *
8920  * i40e_setup_pf_filter_control sets up a pf's initial filter control
8921  * settings. If PE/FCoE are enabled then it will also set the per PF
8922  * based filter sizes required for them. It also enables Flow director,
8923  * ethertype and macvlan type filter settings for the pf.
8924  *
8925  * Returns 0 on success, negative on failure
8926  **/
8927 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
8928 {
8929         struct i40e_filter_control_settings *settings = &pf->filter_settings;
8930
8931         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
8932
8933         /* Flow Director is enabled */
8934         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
8935                 settings->enable_fdir = true;
8936
8937         /* Ethtype and MACVLAN filters enabled for PF */
8938         settings->enable_ethtype = true;
8939         settings->enable_macvlan = true;
8940
8941         if (i40e_set_filter_control(&pf->hw, settings))
8942                 return -ENOENT;
8943
8944         return 0;
8945 }
8946
8947 #define INFO_STRING_LEN 255
8948 static void i40e_print_features(struct i40e_pf *pf)
8949 {
8950         struct i40e_hw *hw = &pf->hw;
8951         char *buf, *string;
8952
8953         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
8954         if (!string) {
8955                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
8956                 return;
8957         }
8958
8959         buf = string;
8960
8961         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
8962 #ifdef CONFIG_PCI_IOV
8963         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
8964 #endif
8965         buf += sprintf(buf, "VSIs: %d QP: %d ", pf->hw.func_caps.num_vsis,
8966                        pf->vsi[pf->lan_vsi]->num_queue_pairs);
8967
8968         if (pf->flags & I40E_FLAG_RSS_ENABLED)
8969                 buf += sprintf(buf, "RSS ");
8970         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
8971                 buf += sprintf(buf, "FD_ATR ");
8972         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8973                 buf += sprintf(buf, "FD_SB ");
8974                 buf += sprintf(buf, "NTUPLE ");
8975         }
8976         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
8977                 buf += sprintf(buf, "DCB ");
8978         if (pf->flags & I40E_FLAG_PTP)
8979                 buf += sprintf(buf, "PTP ");
8980 #ifdef I40E_FCOE
8981         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
8982                 buf += sprintf(buf, "FCOE ");
8983 #endif
8984
8985         BUG_ON(buf > (string + INFO_STRING_LEN));
8986         dev_info(&pf->pdev->dev, "%s\n", string);
8987         kfree(string);
8988 }
8989
8990 /**
8991  * i40e_probe - Device initialization routine
8992  * @pdev: PCI device information struct
8993  * @ent: entry in i40e_pci_tbl
8994  *
8995  * i40e_probe initializes a pf identified by a pci_dev structure.
8996  * The OS initialization, configuring of the pf private structure,
8997  * and a hardware reset occur.
8998  *
8999  * Returns 0 on success, negative on failure
9000  **/
9001 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9002 {
9003         struct i40e_pf *pf;
9004         struct i40e_hw *hw;
9005         static u16 pfs_found;
9006         u16 link_status;
9007         int err = 0;
9008         u32 len;
9009         u32 i;
9010
9011         err = pci_enable_device_mem(pdev);
9012         if (err)
9013                 return err;
9014
9015         /* set up for high or low dma */
9016         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9017         if (err) {
9018                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9019                 if (err) {
9020                         dev_err(&pdev->dev,
9021                                 "DMA configuration failed: 0x%x\n", err);
9022                         goto err_dma;
9023                 }
9024         }
9025
9026         /* set up pci connections */
9027         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9028                                            IORESOURCE_MEM), i40e_driver_name);
9029         if (err) {
9030                 dev_info(&pdev->dev,
9031                          "pci_request_selected_regions failed %d\n", err);
9032                 goto err_pci_reg;
9033         }
9034
9035         pci_enable_pcie_error_reporting(pdev);
9036         pci_set_master(pdev);
9037
9038         /* Now that we have a PCI connection, we need to do the
9039          * low level device setup.  This is primarily setting up
9040          * the Admin Queue structures and then querying for the
9041          * device's current profile information.
9042          */
9043         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9044         if (!pf) {
9045                 err = -ENOMEM;
9046                 goto err_pf_alloc;
9047         }
9048         pf->next_vsi = 0;
9049         pf->pdev = pdev;
9050         set_bit(__I40E_DOWN, &pf->state);
9051
9052         hw = &pf->hw;
9053         hw->back = pf;
9054         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
9055                               pci_resource_len(pdev, 0));
9056         if (!hw->hw_addr) {
9057                 err = -EIO;
9058                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9059                          (unsigned int)pci_resource_start(pdev, 0),
9060                          (unsigned int)pci_resource_len(pdev, 0), err);
9061                 goto err_ioremap;
9062         }
9063         hw->vendor_id = pdev->vendor;
9064         hw->device_id = pdev->device;
9065         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
9066         hw->subsystem_vendor_id = pdev->subsystem_vendor;
9067         hw->subsystem_device_id = pdev->subsystem_device;
9068         hw->bus.device = PCI_SLOT(pdev->devfn);
9069         hw->bus.func = PCI_FUNC(pdev->devfn);
9070         pf->instance = pfs_found;
9071
9072         if (debug != -1) {
9073                 pf->msg_enable = pf->hw.debug_mask;
9074                 pf->msg_enable = debug;
9075         }
9076
9077         /* do a special CORER for clearing PXE mode once at init */
9078         if (hw->revision_id == 0 &&
9079             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
9080                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
9081                 i40e_flush(hw);
9082                 msleep(200);
9083                 pf->corer_count++;
9084
9085                 i40e_clear_pxe_mode(hw);
9086         }
9087
9088         /* Reset here to make sure all is clean and to define PF 'n' */
9089         i40e_clear_hw(hw);
9090         err = i40e_pf_reset(hw);
9091         if (err) {
9092                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
9093                 goto err_pf_reset;
9094         }
9095         pf->pfr_count++;
9096
9097         hw->aq.num_arq_entries = I40E_AQ_LEN;
9098         hw->aq.num_asq_entries = I40E_AQ_LEN;
9099         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9100         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9101         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
9102         snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
9103                  "%s-pf%d:misc",
9104                  dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
9105
9106         err = i40e_init_shared_code(hw);
9107         if (err) {
9108                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
9109                 goto err_pf_reset;
9110         }
9111
9112         /* set up a default setting for link flow control */
9113         pf->hw.fc.requested_mode = I40E_FC_NONE;
9114
9115         err = i40e_init_adminq(hw);
9116         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
9117         if (err) {
9118                 dev_info(&pdev->dev,
9119                          "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");
9120                 goto err_pf_reset;
9121         }
9122
9123         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
9124             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
9125                 dev_info(&pdev->dev,
9126                          "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");
9127         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
9128                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
9129                 dev_info(&pdev->dev,
9130                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
9131
9132
9133         i40e_verify_eeprom(pf);
9134
9135         /* Rev 0 hardware was never productized */
9136         if (hw->revision_id < 1)
9137                 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");
9138
9139         i40e_clear_pxe_mode(hw);
9140         err = i40e_get_capabilities(pf);
9141         if (err)
9142                 goto err_adminq_setup;
9143
9144         err = i40e_sw_init(pf);
9145         if (err) {
9146                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
9147                 goto err_sw_init;
9148         }
9149
9150         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
9151                                 hw->func_caps.num_rx_qp,
9152                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
9153         if (err) {
9154                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
9155                 goto err_init_lan_hmc;
9156         }
9157
9158         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
9159         if (err) {
9160                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
9161                 err = -ENOENT;
9162                 goto err_configure_lan_hmc;
9163         }
9164
9165         i40e_get_mac_addr(hw, hw->mac.addr);
9166         if (!is_valid_ether_addr(hw->mac.addr)) {
9167                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
9168                 err = -EIO;
9169                 goto err_mac_addr;
9170         }
9171         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
9172         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
9173         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
9174         if (is_valid_ether_addr(hw->mac.port_addr))
9175                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
9176 #ifdef I40E_FCOE
9177         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
9178         if (err)
9179                 dev_info(&pdev->dev,
9180                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
9181         if (!is_valid_ether_addr(hw->mac.san_addr)) {
9182                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
9183                          hw->mac.san_addr);
9184                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
9185         }
9186         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
9187 #endif /* I40E_FCOE */
9188
9189         pci_set_drvdata(pdev, pf);
9190         pci_save_state(pdev);
9191 #ifdef CONFIG_I40E_DCB
9192         err = i40e_init_pf_dcb(pf);
9193         if (err) {
9194                 dev_info(&pdev->dev, "init_pf_dcb failed: %d\n", err);
9195                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9196                 /* Continue without DCB enabled */
9197         }
9198 #endif /* CONFIG_I40E_DCB */
9199
9200         /* set up periodic task facility */
9201         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
9202         pf->service_timer_period = HZ;
9203
9204         INIT_WORK(&pf->service_task, i40e_service_task);
9205         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
9206         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
9207         pf->link_check_timeout = jiffies;
9208
9209         /* WoL defaults to disabled */
9210         pf->wol_en = false;
9211         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
9212
9213         /* set up the main switch operations */
9214         i40e_determine_queue_usage(pf);
9215         i40e_init_interrupt_scheme(pf);
9216
9217         /* The number of VSIs reported by the FW is the minimum guaranteed
9218          * to us; HW supports far more and we share the remaining pool with
9219          * the other PFs. We allocate space for more than the guarantee with
9220          * the understanding that we might not get them all later.
9221          */
9222         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
9223                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
9224         else
9225                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
9226
9227         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
9228         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
9229         pf->vsi = kzalloc(len, GFP_KERNEL);
9230         if (!pf->vsi) {
9231                 err = -ENOMEM;
9232                 goto err_switch_setup;
9233         }
9234
9235         err = i40e_setup_pf_switch(pf, false);
9236         if (err) {
9237                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
9238                 goto err_vsis;
9239         }
9240         /* if FDIR VSI was set up, start it now */
9241         for (i = 0; i < pf->num_alloc_vsi; i++) {
9242                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
9243                         i40e_vsi_open(pf->vsi[i]);
9244                         break;
9245                 }
9246         }
9247
9248         /* driver is only interested in link up/down and module qualification
9249          * reports from firmware
9250          */
9251         err = i40e_aq_set_phy_int_mask(&pf->hw,
9252                                        I40E_AQ_EVENT_LINK_UPDOWN |
9253                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
9254         if (err)
9255                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", err);
9256
9257         msleep(75);
9258         err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
9259         if (err) {
9260                 dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
9261                          pf->hw.aq.asq_last_status);
9262         }
9263
9264         /* The main driver is (mostly) up and happy. We need to set this state
9265          * before setting up the misc vector or we get a race and the vector
9266          * ends up disabled forever.
9267          */
9268         clear_bit(__I40E_DOWN, &pf->state);
9269
9270         /* In case of MSIX we are going to setup the misc vector right here
9271          * to handle admin queue events etc. In case of legacy and MSI
9272          * the misc functionality and queue processing is combined in
9273          * the same vector and that gets setup at open.
9274          */
9275         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9276                 err = i40e_setup_misc_vector(pf);
9277                 if (err) {
9278                         dev_info(&pdev->dev,
9279                                  "setup of misc vector failed: %d\n", err);
9280                         goto err_vsis;
9281                 }
9282         }
9283
9284 #ifdef CONFIG_PCI_IOV
9285         /* prep for VF support */
9286         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9287             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
9288             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
9289                 u32 val;
9290
9291                 /* disable link interrupts for VFs */
9292                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
9293                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
9294                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
9295                 i40e_flush(hw);
9296
9297                 if (pci_num_vf(pdev)) {
9298                         dev_info(&pdev->dev,
9299                                  "Active VFs found, allocating resources.\n");
9300                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
9301                         if (err)
9302                                 dev_info(&pdev->dev,
9303                                          "Error %d allocating resources for existing VFs\n",
9304                                          err);
9305                 }
9306         }
9307 #endif /* CONFIG_PCI_IOV */
9308
9309         pfs_found++;
9310
9311         i40e_dbg_pf_init(pf);
9312
9313         /* tell the firmware that we're starting */
9314         i40e_send_version(pf);
9315
9316         /* since everything's happy, start the service_task timer */
9317         mod_timer(&pf->service_timer,
9318                   round_jiffies(jiffies + pf->service_timer_period));
9319
9320 #ifdef I40E_FCOE
9321         /* create FCoE interface */
9322         i40e_fcoe_vsi_setup(pf);
9323
9324 #endif
9325         /* Get the negotiated link width and speed from PCI config space */
9326         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
9327
9328         i40e_set_pci_config_data(hw, link_status);
9329
9330         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
9331                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
9332                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
9333                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
9334                  "Unknown"),
9335                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
9336                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
9337                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
9338                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
9339                  "Unknown"));
9340
9341         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
9342             hw->bus.speed < i40e_bus_speed_8000) {
9343                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
9344                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
9345         }
9346
9347         /* print a string summarizing features */
9348         i40e_print_features(pf);
9349
9350         return 0;
9351
9352         /* Unwind what we've done if something failed in the setup */
9353 err_vsis:
9354         set_bit(__I40E_DOWN, &pf->state);
9355         i40e_clear_interrupt_scheme(pf);
9356         kfree(pf->vsi);
9357 err_switch_setup:
9358         i40e_reset_interrupt_capability(pf);
9359         del_timer_sync(&pf->service_timer);
9360 err_mac_addr:
9361 err_configure_lan_hmc:
9362         (void)i40e_shutdown_lan_hmc(hw);
9363 err_init_lan_hmc:
9364         kfree(pf->qp_pile);
9365         kfree(pf->irq_pile);
9366 err_sw_init:
9367 err_adminq_setup:
9368         (void)i40e_shutdown_adminq(hw);
9369 err_pf_reset:
9370         iounmap(hw->hw_addr);
9371 err_ioremap:
9372         kfree(pf);
9373 err_pf_alloc:
9374         pci_disable_pcie_error_reporting(pdev);
9375         pci_release_selected_regions(pdev,
9376                                      pci_select_bars(pdev, IORESOURCE_MEM));
9377 err_pci_reg:
9378 err_dma:
9379         pci_disable_device(pdev);
9380         return err;
9381 }
9382
9383 /**
9384  * i40e_remove - Device removal routine
9385  * @pdev: PCI device information struct
9386  *
9387  * i40e_remove is called by the PCI subsystem to alert the driver
9388  * that is should release a PCI device.  This could be caused by a
9389  * Hot-Plug event, or because the driver is going to be removed from
9390  * memory.
9391  **/
9392 static void i40e_remove(struct pci_dev *pdev)
9393 {
9394         struct i40e_pf *pf = pci_get_drvdata(pdev);
9395         i40e_status ret_code;
9396         int i;
9397
9398         i40e_dbg_pf_exit(pf);
9399
9400         i40e_ptp_stop(pf);
9401
9402         /* no more scheduling of any task */
9403         set_bit(__I40E_DOWN, &pf->state);
9404         del_timer_sync(&pf->service_timer);
9405         cancel_work_sync(&pf->service_task);
9406
9407         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
9408                 i40e_free_vfs(pf);
9409                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
9410         }
9411
9412         i40e_fdir_teardown(pf);
9413
9414         /* If there is a switch structure or any orphans, remove them.
9415          * This will leave only the PF's VSI remaining.
9416          */
9417         for (i = 0; i < I40E_MAX_VEB; i++) {
9418                 if (!pf->veb[i])
9419                         continue;
9420
9421                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
9422                     pf->veb[i]->uplink_seid == 0)
9423                         i40e_switch_branch_release(pf->veb[i]);
9424         }
9425
9426         /* Now we can shutdown the PF's VSI, just before we kill
9427          * adminq and hmc.
9428          */
9429         if (pf->vsi[pf->lan_vsi])
9430                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
9431
9432         i40e_stop_misc_vector(pf);
9433         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9434                 synchronize_irq(pf->msix_entries[0].vector);
9435                 free_irq(pf->msix_entries[0].vector, pf);
9436         }
9437
9438         /* shutdown and destroy the HMC */
9439         if (pf->hw.hmc.hmc_obj) {
9440                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
9441                 if (ret_code)
9442                         dev_warn(&pdev->dev,
9443                                  "Failed to destroy the HMC resources: %d\n",
9444                                  ret_code);
9445         }
9446
9447         /* shutdown the adminq */
9448         ret_code = i40e_shutdown_adminq(&pf->hw);
9449         if (ret_code)
9450                 dev_warn(&pdev->dev,
9451                          "Failed to destroy the Admin Queue resources: %d\n",
9452                          ret_code);
9453
9454         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
9455         i40e_clear_interrupt_scheme(pf);
9456         for (i = 0; i < pf->num_alloc_vsi; i++) {
9457                 if (pf->vsi[i]) {
9458                         i40e_vsi_clear_rings(pf->vsi[i]);
9459                         i40e_vsi_clear(pf->vsi[i]);
9460                         pf->vsi[i] = NULL;
9461                 }
9462         }
9463
9464         for (i = 0; i < I40E_MAX_VEB; i++) {
9465                 kfree(pf->veb[i]);
9466                 pf->veb[i] = NULL;
9467         }
9468
9469         kfree(pf->qp_pile);
9470         kfree(pf->irq_pile);
9471         kfree(pf->vsi);
9472
9473         iounmap(pf->hw.hw_addr);
9474         kfree(pf);
9475         pci_release_selected_regions(pdev,
9476                                      pci_select_bars(pdev, IORESOURCE_MEM));
9477
9478         pci_disable_pcie_error_reporting(pdev);
9479         pci_disable_device(pdev);
9480 }
9481
9482 /**
9483  * i40e_pci_error_detected - warning that something funky happened in PCI land
9484  * @pdev: PCI device information struct
9485  *
9486  * Called to warn that something happened and the error handling steps
9487  * are in progress.  Allows the driver to quiesce things, be ready for
9488  * remediation.
9489  **/
9490 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
9491                                                 enum pci_channel_state error)
9492 {
9493         struct i40e_pf *pf = pci_get_drvdata(pdev);
9494
9495         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
9496
9497         /* shutdown all operations */
9498         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
9499                 rtnl_lock();
9500                 i40e_prep_for_reset(pf);
9501                 rtnl_unlock();
9502         }
9503
9504         /* Request a slot reset */
9505         return PCI_ERS_RESULT_NEED_RESET;
9506 }
9507
9508 /**
9509  * i40e_pci_error_slot_reset - a PCI slot reset just happened
9510  * @pdev: PCI device information struct
9511  *
9512  * Called to find if the driver can work with the device now that
9513  * the pci slot has been reset.  If a basic connection seems good
9514  * (registers are readable and have sane content) then return a
9515  * happy little PCI_ERS_RESULT_xxx.
9516  **/
9517 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
9518 {
9519         struct i40e_pf *pf = pci_get_drvdata(pdev);
9520         pci_ers_result_t result;
9521         int err;
9522         u32 reg;
9523
9524         dev_info(&pdev->dev, "%s\n", __func__);
9525         if (pci_enable_device_mem(pdev)) {
9526                 dev_info(&pdev->dev,
9527                          "Cannot re-enable PCI device after reset.\n");
9528                 result = PCI_ERS_RESULT_DISCONNECT;
9529         } else {
9530                 pci_set_master(pdev);
9531                 pci_restore_state(pdev);
9532                 pci_save_state(pdev);
9533                 pci_wake_from_d3(pdev, false);
9534
9535                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
9536                 if (reg == 0)
9537                         result = PCI_ERS_RESULT_RECOVERED;
9538                 else
9539                         result = PCI_ERS_RESULT_DISCONNECT;
9540         }
9541
9542         err = pci_cleanup_aer_uncorrect_error_status(pdev);
9543         if (err) {
9544                 dev_info(&pdev->dev,
9545                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
9546                          err);
9547                 /* non-fatal, continue */
9548         }
9549
9550         return result;
9551 }
9552
9553 /**
9554  * i40e_pci_error_resume - restart operations after PCI error recovery
9555  * @pdev: PCI device information struct
9556  *
9557  * Called to allow the driver to bring things back up after PCI error
9558  * and/or reset recovery has finished.
9559  **/
9560 static void i40e_pci_error_resume(struct pci_dev *pdev)
9561 {
9562         struct i40e_pf *pf = pci_get_drvdata(pdev);
9563
9564         dev_info(&pdev->dev, "%s\n", __func__);
9565         if (test_bit(__I40E_SUSPENDED, &pf->state))
9566                 return;
9567
9568         rtnl_lock();
9569         i40e_handle_reset_warning(pf);
9570         rtnl_lock();
9571 }
9572
9573 /**
9574  * i40e_shutdown - PCI callback for shutting down
9575  * @pdev: PCI device information struct
9576  **/
9577 static void i40e_shutdown(struct pci_dev *pdev)
9578 {
9579         struct i40e_pf *pf = pci_get_drvdata(pdev);
9580         struct i40e_hw *hw = &pf->hw;
9581
9582         set_bit(__I40E_SUSPENDED, &pf->state);
9583         set_bit(__I40E_DOWN, &pf->state);
9584         rtnl_lock();
9585         i40e_prep_for_reset(pf);
9586         rtnl_unlock();
9587
9588         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9589         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9590
9591         if (system_state == SYSTEM_POWER_OFF) {
9592                 pci_wake_from_d3(pdev, pf->wol_en);
9593                 pci_set_power_state(pdev, PCI_D3hot);
9594         }
9595 }
9596
9597 #ifdef CONFIG_PM
9598 /**
9599  * i40e_suspend - PCI callback for moving to D3
9600  * @pdev: PCI device information struct
9601  **/
9602 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
9603 {
9604         struct i40e_pf *pf = pci_get_drvdata(pdev);
9605         struct i40e_hw *hw = &pf->hw;
9606
9607         set_bit(__I40E_SUSPENDED, &pf->state);
9608         set_bit(__I40E_DOWN, &pf->state);
9609         rtnl_lock();
9610         i40e_prep_for_reset(pf);
9611         rtnl_unlock();
9612
9613         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9614         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9615
9616         pci_wake_from_d3(pdev, pf->wol_en);
9617         pci_set_power_state(pdev, PCI_D3hot);
9618
9619         return 0;
9620 }
9621
9622 /**
9623  * i40e_resume - PCI callback for waking up from D3
9624  * @pdev: PCI device information struct
9625  **/
9626 static int i40e_resume(struct pci_dev *pdev)
9627 {
9628         struct i40e_pf *pf = pci_get_drvdata(pdev);
9629         u32 err;
9630
9631         pci_set_power_state(pdev, PCI_D0);
9632         pci_restore_state(pdev);
9633         /* pci_restore_state() clears dev->state_saves, so
9634          * call pci_save_state() again to restore it.
9635          */
9636         pci_save_state(pdev);
9637
9638         err = pci_enable_device_mem(pdev);
9639         if (err) {
9640                 dev_err(&pdev->dev,
9641                         "%s: Cannot enable PCI device from suspend\n",
9642                         __func__);
9643                 return err;
9644         }
9645         pci_set_master(pdev);
9646
9647         /* no wakeup events while running */
9648         pci_wake_from_d3(pdev, false);
9649
9650         /* handling the reset will rebuild the device state */
9651         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
9652                 clear_bit(__I40E_DOWN, &pf->state);
9653                 rtnl_lock();
9654                 i40e_reset_and_rebuild(pf, false);
9655                 rtnl_unlock();
9656         }
9657
9658         return 0;
9659 }
9660
9661 #endif
9662 static const struct pci_error_handlers i40e_err_handler = {
9663         .error_detected = i40e_pci_error_detected,
9664         .slot_reset = i40e_pci_error_slot_reset,
9665         .resume = i40e_pci_error_resume,
9666 };
9667
9668 static struct pci_driver i40e_driver = {
9669         .name     = i40e_driver_name,
9670         .id_table = i40e_pci_tbl,
9671         .probe    = i40e_probe,
9672         .remove   = i40e_remove,
9673 #ifdef CONFIG_PM
9674         .suspend  = i40e_suspend,
9675         .resume   = i40e_resume,
9676 #endif
9677         .shutdown = i40e_shutdown,
9678         .err_handler = &i40e_err_handler,
9679         .sriov_configure = i40e_pci_sriov_configure,
9680 };
9681
9682 /**
9683  * i40e_init_module - Driver registration routine
9684  *
9685  * i40e_init_module is the first routine called when the driver is
9686  * loaded. All it does is register with the PCI subsystem.
9687  **/
9688 static int __init i40e_init_module(void)
9689 {
9690         pr_info("%s: %s - version %s\n", i40e_driver_name,
9691                 i40e_driver_string, i40e_driver_version_str);
9692         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
9693         i40e_dbg_init();
9694         return pci_register_driver(&i40e_driver);
9695 }
9696 module_init(i40e_init_module);
9697
9698 /**
9699  * i40e_exit_module - Driver exit cleanup routine
9700  *
9701  * i40e_exit_module is called just before the driver is removed
9702  * from memory.
9703  **/
9704 static void __exit i40e_exit_module(void)
9705 {
9706         pci_unregister_driver(&i40e_driver);
9707         i40e_dbg_exit();
9708 }
9709 module_exit(i40e_exit_module);