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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2015 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 /* Local includes */
  28 #include "i40e.h"
  29 #include "i40e_diag.h"
  30 #ifdef CONFIG_I40E_VXLAN
  31 #include <net/vxlan.h>
  32 #endif
  33
  34 const char i40e_driver_name[] = "i40e";
  35 static const char i40e_driver_string[] =
  36                         "Intel(R) Ethernet Connection XL710 Network Driver";
  37
  38 #define DRV_KERN "-k"
  39
  40 #define DRV_VERSION_MAJOR 1
  41 #define DRV_VERSION_MINOR 2
  42 #define DRV_VERSION_BUILD 9
  43 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  44              __stringify(DRV_VERSION_MINOR) "." \
  45              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  46 const char i40e_driver_version_str[] = DRV_VERSION;
  47 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  48
  49 /* a bit of forward declarations */
  50 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  51 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  52 static int i40e_add_vsi(struct i40e_vsi *vsi);
  53 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  54 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  55 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  56 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  57 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  58 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  59 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  60
  61 /* i40e_pci_tbl - PCI Device ID Table
  62  *
  63  * Last entry must be all 0s
  64  *
  65  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  66  *   Class, Class Mask, private data (not used) }
  67  */
  68 static const struct pci_device_id i40e_pci_tbl[] = {
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  78         /* required last entry */
  79         {0, }
  80 };
  81 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  82
  83 #define I40E_MAX_VF_COUNT 128
  84 static int debug = -1;
  85 module_param(debug, int, 0);
  86 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  87
  88 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  89 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  90 MODULE_LICENSE("GPL");
  91 MODULE_VERSION(DRV_VERSION);
  92
  93 /**
  94  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  95  * @hw:   pointer to the HW structure
  96  * @mem:  ptr to mem struct to fill out
  97  * @size: size of memory requested
  98  * @alignment: what to align the allocation to
  99  **/
 100 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 101                             u64 size, u32 alignment)
 102 {
 103         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 104
 105         mem->size = ALIGN(size, alignment);
 106         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 107                                       &mem->pa, GFP_KERNEL);
 108         if (!mem->va)
 109                 return -ENOMEM;
 110
 111         return 0;
 112 }
 113
 114 /**
 115  * i40e_free_dma_mem_d - OS specific memory free for shared code
 116  * @hw:   pointer to the HW structure
 117  * @mem:  ptr to mem struct to free
 118  **/
 119 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 120 {
 121         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 122
 123         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 124         mem->va = NULL;
 125         mem->pa = 0;
 126         mem->size = 0;
 127
 128         return 0;
 129 }
 130
 131 /**
 132  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 133  * @hw:   pointer to the HW structure
 134  * @mem:  ptr to mem struct to fill out
 135  * @size: size of memory requested
 136  **/
 137 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 138                              u32 size)
 139 {
 140         mem->size = size;
 141         mem->va = kzalloc(size, GFP_KERNEL);
 142
 143         if (!mem->va)
 144                 return -ENOMEM;
 145
 146         return 0;
 147 }
 148
 149 /**
 150  * i40e_free_virt_mem_d - OS specific memory free for shared code
 151  * @hw:   pointer to the HW structure
 152  * @mem:  ptr to mem struct to free
 153  **/
 154 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 155 {
 156         /* it's ok to kfree a NULL pointer */
 157         kfree(mem->va);
 158         mem->va = NULL;
 159         mem->size = 0;
 160
 161         return 0;
 162 }
 163
 164 /**
 165  * i40e_get_lump - find a lump of free generic resource
 166  * @pf: board private structure
 167  * @pile: the pile of resource to search
 168  * @needed: the number of items needed
 169  * @id: an owner id to stick on the items assigned
 170  *
 171  * Returns the base item index of the lump, or negative for error
 172  *
 173  * The search_hint trick and lack of advanced fit-finding only work
 174  * because we're highly likely to have all the same size lump requests.
 175  * Linear search time and any fragmentation should be minimal.
 176  **/
 177 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 178                          u16 needed, u16 id)
 179 {
 180         int ret = -ENOMEM;
 181         int i, j;
 182
 183         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 184                 dev_info(&pf->pdev->dev,
 185                          "param err: pile=%p needed=%d id=0x%04x\n",
 186                          pile, needed, id);
 187                 return -EINVAL;
 188         }
 189
 190         /* start the linear search with an imperfect hint */
 191         i = pile->search_hint;
 192         while (i < pile->num_entries) {
 193                 /* skip already allocated entries */
 194                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 195                         i++;
 196                         continue;
 197                 }
 198
 199                 /* do we have enough in this lump? */
 200                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 201                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 202                                 break;
 203                 }
 204
 205                 if (j == needed) {
 206                         /* there was enough, so assign it to the requestor */
 207                         for (j = 0; j < needed; j++)
 208                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 209                         ret = i;
 210                         pile->search_hint = i + j;
 211                         break;
 212                 } else {
 213                         /* not enough, so skip over it and continue looking */
 214                         i += j;
 215                 }
 216         }
 217
 218         return ret;
 219 }
 220
 221 /**
 222  * i40e_put_lump - return a lump of generic resource
 223  * @pile: the pile of resource to search
 224  * @index: the base item index
 225  * @id: the owner id of the items assigned
 226  *
 227  * Returns the count of items in the lump
 228  **/
 229 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 230 {
 231         int valid_id = (id | I40E_PILE_VALID_BIT);
 232         int count = 0;
 233         int i;
 234
 235         if (!pile || index >= pile->num_entries)
 236                 return -EINVAL;
 237
 238         for (i = index;
 239              i < pile->num_entries && pile->list[i] == valid_id;
 240              i++) {
 241                 pile->list[i] = 0;
 242                 count++;
 243         }
 244
 245         if (count && index < pile->search_hint)
 246                 pile->search_hint = index;
 247
 248         return count;
 249 }
 250
 251 /**
 252  * i40e_service_event_schedule - Schedule the service task to wake up
 253  * @pf: board private structure
 254  *
 255  * If not already scheduled, this puts the task into the work queue
 256  **/
 257 static void i40e_service_event_schedule(struct i40e_pf *pf)
 258 {
 259         if (!test_bit(__I40E_DOWN, &pf->state) &&
 260             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 261             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 262                 schedule_work(&pf->service_task);
 263 }
 264
 265 /**
 266  * i40e_tx_timeout - Respond to a Tx Hang
 267  * @netdev: network interface device structure
 268  *
 269  * If any port has noticed a Tx timeout, it is likely that the whole
 270  * device is munged, not just the one netdev port, so go for the full
 271  * reset.
 272  **/
 273 #ifdef I40E_FCOE
 274 void i40e_tx_timeout(struct net_device *netdev)
 275 #else
 276 static void i40e_tx_timeout(struct net_device *netdev)
 277 #endif
 278 {
 279         struct i40e_netdev_priv *np = netdev_priv(netdev);
 280         struct i40e_vsi *vsi = np->vsi;
 281         struct i40e_pf *pf = vsi->back;
 282
 283         pf->tx_timeout_count++;
 284
 285         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 286                 pf->tx_timeout_recovery_level = 1;
 287         pf->tx_timeout_last_recovery = jiffies;
 288         netdev_info(netdev, "tx_timeout recovery level %d\n",
 289                     pf->tx_timeout_recovery_level);
 290
 291         switch (pf->tx_timeout_recovery_level) {
 292         case 0:
 293                 /* disable and re-enable queues for the VSI */
 294                 if (in_interrupt()) {
 295                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 296                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 297                 } else {
 298                         i40e_vsi_reinit_locked(vsi);
 299                 }
 300                 break;
 301         case 1:
 302                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 303                 break;
 304         case 2:
 305                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 306                 break;
 307         case 3:
 308                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 309                 break;
 310         default:
 311                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 312                 set_bit(__I40E_DOWN_REQUESTED, &pf->state);
 313                 set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
 314                 break;
 315         }
 316         i40e_service_event_schedule(pf);
 317         pf->tx_timeout_recovery_level++;
 318 }
 319
 320 /**
 321  * i40e_release_rx_desc - Store the new tail and head values
 322  * @rx_ring: ring to bump
 323  * @val: new head index
 324  **/
 325 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 326 {
 327         rx_ring->next_to_use = val;
 328
 329         /* Force memory writes to complete before letting h/w
 330          * know there are new descriptors to fetch.  (Only
 331          * applicable for weak-ordered memory model archs,
 332          * such as IA-64).
 333          */
 334         wmb();
 335         writel(val, rx_ring->tail);
 336 }
 337
 338 /**
 339  * i40e_get_vsi_stats_struct - Get System Network Statistics
 340  * @vsi: the VSI we care about
 341  *
 342  * Returns the address of the device statistics structure.
 343  * The statistics are actually updated from the service task.
 344  **/
 345 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 346 {
 347         return &vsi->net_stats;
 348 }
 349
 350 /**
 351  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 352  * @netdev: network interface device structure
 353  *
 354  * Returns the address of the device statistics structure.
 355  * The statistics are actually updated from the service task.
 356  **/
 357 #ifdef I40E_FCOE
 358 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 359                                              struct net_device *netdev,
 360                                              struct rtnl_link_stats64 *stats)
 361 #else
 362 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 363                                              struct net_device *netdev,
 364                                              struct rtnl_link_stats64 *stats)
 365 #endif
 366 {
 367         struct i40e_netdev_priv *np = netdev_priv(netdev);
 368         struct i40e_ring *tx_ring, *rx_ring;
 369         struct i40e_vsi *vsi = np->vsi;
 370         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 371         int i;
 372
 373         if (test_bit(__I40E_DOWN, &vsi->state))
 374                 return stats;
 375
 376         if (!vsi->tx_rings)
 377                 return stats;
 378
 379         rcu_read_lock();
 380         for (i = 0; i < vsi->num_queue_pairs; i++) {
 381                 u64 bytes, packets;
 382                 unsigned int start;
 383
 384                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 385                 if (!tx_ring)
 386                         continue;
 387
 388                 do {
 389                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 390                         packets = tx_ring->stats.packets;
 391                         bytes   = tx_ring->stats.bytes;
 392                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 393
 394                 stats->tx_packets += packets;
 395                 stats->tx_bytes   += bytes;
 396                 rx_ring = &tx_ring[1];
 397
 398                 do {
 399                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 400                         packets = rx_ring->stats.packets;
 401                         bytes   = rx_ring->stats.bytes;
 402                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 403
 404                 stats->rx_packets += packets;
 405                 stats->rx_bytes   += bytes;
 406         }
 407         rcu_read_unlock();
 408
 409         /* following stats updated by i40e_watchdog_subtask() */
 410         stats->multicast        = vsi_stats->multicast;
 411         stats->tx_errors        = vsi_stats->tx_errors;
 412         stats->tx_dropped       = vsi_stats->tx_dropped;
 413         stats->rx_errors        = vsi_stats->rx_errors;
 414         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 415         stats->rx_length_errors = vsi_stats->rx_length_errors;
 416
 417         return stats;
 418 }
 419
 420 /**
 421  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 422  * @vsi: the VSI to have its stats reset
 423  **/
 424 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 425 {
 426         struct rtnl_link_stats64 *ns;
 427         int i;
 428
 429         if (!vsi)
 430                 return;
 431
 432         ns = i40e_get_vsi_stats_struct(vsi);
 433         memset(ns, 0, sizeof(*ns));
 434         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 435         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 436         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 437         if (vsi->rx_rings && vsi->rx_rings[0]) {
 438                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 439                         memset(&vsi->rx_rings[i]->stats, 0 ,
 440                                sizeof(vsi->rx_rings[i]->stats));
 441                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 442                                sizeof(vsi->rx_rings[i]->rx_stats));
 443                         memset(&vsi->tx_rings[i]->stats, 0 ,
 444                                sizeof(vsi->tx_rings[i]->stats));
 445                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 446                                sizeof(vsi->tx_rings[i]->tx_stats));
 447                 }
 448         }
 449         vsi->stat_offsets_loaded = false;
 450 }
 451
 452 /**
 453  * i40e_pf_reset_stats - Reset all of the stats for the given pf
 454  * @pf: the PF to be reset
 455  **/
 456 void i40e_pf_reset_stats(struct i40e_pf *pf)
 457 {
 458         int i;
 459
 460         memset(&pf->stats, 0, sizeof(pf->stats));
 461         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 462         pf->stat_offsets_loaded = false;
 463
 464         for (i = 0; i < I40E_MAX_VEB; i++) {
 465                 if (pf->veb[i]) {
 466                         memset(&pf->veb[i]->stats, 0,
 467                                sizeof(pf->veb[i]->stats));
 468                         memset(&pf->veb[i]->stats_offsets, 0,
 469                                sizeof(pf->veb[i]->stats_offsets));
 470                         pf->veb[i]->stat_offsets_loaded = false;
 471                 }
 472         }
 473 }
 474
 475 /**
 476  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 477  * @hw: ptr to the hardware info
 478  * @hireg: the high 32 bit reg to read
 479  * @loreg: the low 32 bit reg to read
 480  * @offset_loaded: has the initial offset been loaded yet
 481  * @offset: ptr to current offset value
 482  * @stat: ptr to the stat
 483  *
 484  * Since the device stats are not reset at PFReset, they likely will not
 485  * be zeroed when the driver starts.  We'll save the first values read
 486  * and use them as offsets to be subtracted from the raw values in order
 487  * to report stats that count from zero.  In the process, we also manage
 488  * the potential roll-over.
 489  **/
 490 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 491                                bool offset_loaded, u64 *offset, u64 *stat)
 492 {
 493         u64 new_data;
 494
 495         if (hw->device_id == I40E_DEV_ID_QEMU) {
 496                 new_data = rd32(hw, loreg);
 497                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 498         } else {
 499                 new_data = rd64(hw, loreg);
 500         }
 501         if (!offset_loaded)
 502                 *offset = new_data;
 503         if (likely(new_data >= *offset))
 504                 *stat = new_data - *offset;
 505         else
 506                 *stat = (new_data + ((u64)1 << 48)) - *offset;
 507         *stat &= 0xFFFFFFFFFFFFULL;
 508 }
 509
 510 /**
 511  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 512  * @hw: ptr to the hardware info
 513  * @reg: the hw reg to read
 514  * @offset_loaded: has the initial offset been loaded yet
 515  * @offset: ptr to current offset value
 516  * @stat: ptr to the stat
 517  **/
 518 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 519                                bool offset_loaded, u64 *offset, u64 *stat)
 520 {
 521         u32 new_data;
 522
 523         new_data = rd32(hw, reg);
 524         if (!offset_loaded)
 525                 *offset = new_data;
 526         if (likely(new_data >= *offset))
 527                 *stat = (u32)(new_data - *offset);
 528         else
 529                 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
 530 }
 531
 532 /**
 533  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 534  * @vsi: the VSI to be updated
 535  **/
 536 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 537 {
 538         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 539         struct i40e_pf *pf = vsi->back;
 540         struct i40e_hw *hw = &pf->hw;
 541         struct i40e_eth_stats *oes;
 542         struct i40e_eth_stats *es;     /* device's eth stats */
 543
 544         es = &vsi->eth_stats;
 545         oes = &vsi->eth_stats_offsets;
 546
 547         /* Gather up the stats that the hw collects */
 548         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 549                            vsi->stat_offsets_loaded,
 550                            &oes->tx_errors, &es->tx_errors);
 551         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 552                            vsi->stat_offsets_loaded,
 553                            &oes->rx_discards, &es->rx_discards);
 554         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 555                            vsi->stat_offsets_loaded,
 556                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 557         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 558                            vsi->stat_offsets_loaded,
 559                            &oes->tx_errors, &es->tx_errors);
 560
 561         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 562                            I40E_GLV_GORCL(stat_idx),
 563                            vsi->stat_offsets_loaded,
 564                            &oes->rx_bytes, &es->rx_bytes);
 565         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 566                            I40E_GLV_UPRCL(stat_idx),
 567                            vsi->stat_offsets_loaded,
 568                            &oes->rx_unicast, &es->rx_unicast);
 569         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 570                            I40E_GLV_MPRCL(stat_idx),
 571                            vsi->stat_offsets_loaded,
 572                            &oes->rx_multicast, &es->rx_multicast);
 573         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 574                            I40E_GLV_BPRCL(stat_idx),
 575                            vsi->stat_offsets_loaded,
 576                            &oes->rx_broadcast, &es->rx_broadcast);
 577
 578         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 579                            I40E_GLV_GOTCL(stat_idx),
 580                            vsi->stat_offsets_loaded,
 581                            &oes->tx_bytes, &es->tx_bytes);
 582         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 583                            I40E_GLV_UPTCL(stat_idx),
 584                            vsi->stat_offsets_loaded,
 585                            &oes->tx_unicast, &es->tx_unicast);
 586         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 587                            I40E_GLV_MPTCL(stat_idx),
 588                            vsi->stat_offsets_loaded,
 589                            &oes->tx_multicast, &es->tx_multicast);
 590         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 591                            I40E_GLV_BPTCL(stat_idx),
 592                            vsi->stat_offsets_loaded,
 593                            &oes->tx_broadcast, &es->tx_broadcast);
 594         vsi->stat_offsets_loaded = true;
 595 }
 596
 597 /**
 598  * i40e_update_veb_stats - Update Switch component statistics
 599  * @veb: the VEB being updated
 600  **/
 601 static void i40e_update_veb_stats(struct i40e_veb *veb)
 602 {
 603         struct i40e_pf *pf = veb->pf;
 604         struct i40e_hw *hw = &pf->hw;
 605         struct i40e_eth_stats *oes;
 606         struct i40e_eth_stats *es;     /* device's eth stats */
 607         int idx = 0;
 608
 609         idx = veb->stats_idx;
 610         es = &veb->stats;
 611         oes = &veb->stats_offsets;
 612
 613         /* Gather up the stats that the hw collects */
 614         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 615                            veb->stat_offsets_loaded,
 616                            &oes->tx_discards, &es->tx_discards);
 617         if (hw->revision_id > 0)
 618                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 619                                    veb->stat_offsets_loaded,
 620                                    &oes->rx_unknown_protocol,
 621                                    &es->rx_unknown_protocol);
 622         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 623                            veb->stat_offsets_loaded,
 624                            &oes->rx_bytes, &es->rx_bytes);
 625         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 626                            veb->stat_offsets_loaded,
 627                            &oes->rx_unicast, &es->rx_unicast);
 628         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 629                            veb->stat_offsets_loaded,
 630                            &oes->rx_multicast, &es->rx_multicast);
 631         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 632                            veb->stat_offsets_loaded,
 633                            &oes->rx_broadcast, &es->rx_broadcast);
 634
 635         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 636                            veb->stat_offsets_loaded,
 637                            &oes->tx_bytes, &es->tx_bytes);
 638         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 639                            veb->stat_offsets_loaded,
 640                            &oes->tx_unicast, &es->tx_unicast);
 641         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 642                            veb->stat_offsets_loaded,
 643                            &oes->tx_multicast, &es->tx_multicast);
 644         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 645                            veb->stat_offsets_loaded,
 646                            &oes->tx_broadcast, &es->tx_broadcast);
 647         veb->stat_offsets_loaded = true;
 648 }
 649
 650 #ifdef I40E_FCOE
 651 /**
 652  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 653  * @vsi: the VSI that is capable of doing FCoE
 654  **/
 655 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 656 {
 657         struct i40e_pf *pf = vsi->back;
 658         struct i40e_hw *hw = &pf->hw;
 659         struct i40e_fcoe_stats *ofs;
 660         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 661         int idx;
 662
 663         if (vsi->type != I40E_VSI_FCOE)
 664                 return;
 665
 666         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 667         fs = &vsi->fcoe_stats;
 668         ofs = &vsi->fcoe_stats_offsets;
 669
 670         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 671                            vsi->fcoe_stat_offsets_loaded,
 672                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 673         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 674                            vsi->fcoe_stat_offsets_loaded,
 675                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 676         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 677                            vsi->fcoe_stat_offsets_loaded,
 678                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 679         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 680                            vsi->fcoe_stat_offsets_loaded,
 681                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 682         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 683                            vsi->fcoe_stat_offsets_loaded,
 684                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 685         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 686                            vsi->fcoe_stat_offsets_loaded,
 687                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 688         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 689                            vsi->fcoe_stat_offsets_loaded,
 690                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 691         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 692                            vsi->fcoe_stat_offsets_loaded,
 693                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 694
 695         vsi->fcoe_stat_offsets_loaded = true;
 696 }
 697
 698 #endif
 699 /**
 700  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 701  * @pf: the corresponding PF
 702  *
 703  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 704  **/
 705 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 706 {
 707         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 708         struct i40e_hw_port_stats *nsd = &pf->stats;
 709         struct i40e_hw *hw = &pf->hw;
 710         u64 xoff = 0;
 711         u16 i, v;
 712
 713         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 714             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 715                 return;
 716
 717         xoff = nsd->link_xoff_rx;
 718         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 719                            pf->stat_offsets_loaded,
 720                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 721
 722         /* No new LFC xoff rx */
 723         if (!(nsd->link_xoff_rx - xoff))
 724                 return;
 725
 726         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 727         for (v = 0; v < pf->num_alloc_vsi; v++) {
 728                 struct i40e_vsi *vsi = pf->vsi[v];
 729
 730                 if (!vsi || !vsi->tx_rings[0])
 731                         continue;
 732
 733                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 734                         struct i40e_ring *ring = vsi->tx_rings[i];
 735                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 736                 }
 737         }
 738 }
 739
 740 /**
 741  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 742  * @pf: the corresponding PF
 743  *
 744  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 745  **/
 746 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 747 {
 748         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 749         struct i40e_hw_port_stats *nsd = &pf->stats;
 750         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 751         struct i40e_dcbx_config *dcb_cfg;
 752         struct i40e_hw *hw = &pf->hw;
 753         u16 i, v;
 754         u8 tc;
 755
 756         dcb_cfg = &hw->local_dcbx_config;
 757
 758         /* See if DCB enabled with PFC TC */
 759         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 760             !(dcb_cfg->pfc.pfcenable)) {
 761                 i40e_update_link_xoff_rx(pf);
 762                 return;
 763         }
 764
 765         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 766                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 767                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 768                                    pf->stat_offsets_loaded,
 769                                    &osd->priority_xoff_rx[i],
 770                                    &nsd->priority_xoff_rx[i]);
 771
 772                 /* No new PFC xoff rx */
 773                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 774                         continue;
 775                 /* Get the TC for given priority */
 776                 tc = dcb_cfg->etscfg.prioritytable[i];
 777                 xoff[tc] = true;
 778         }
 779
 780         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 781         for (v = 0; v < pf->num_alloc_vsi; v++) {
 782                 struct i40e_vsi *vsi = pf->vsi[v];
 783
 784                 if (!vsi || !vsi->tx_rings[0])
 785                         continue;
 786
 787                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 788                         struct i40e_ring *ring = vsi->tx_rings[i];
 789
 790                         tc = ring->dcb_tc;
 791                         if (xoff[tc])
 792                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 793                                           &ring->state);
 794                 }
 795         }
 796 }
 797
 798 /**
 799  * i40e_update_vsi_stats - Update the vsi statistics counters.
 800  * @vsi: the VSI to be updated
 801  *
 802  * There are a few instances where we store the same stat in a
 803  * couple of different structs.  This is partly because we have
 804  * the netdev stats that need to be filled out, which is slightly
 805  * different from the "eth_stats" defined by the chip and used in
 806  * VF communications.  We sort it out here.
 807  **/
 808 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 809 {
 810         struct i40e_pf *pf = vsi->back;
 811         struct rtnl_link_stats64 *ons;
 812         struct rtnl_link_stats64 *ns;   /* netdev stats */
 813         struct i40e_eth_stats *oes;
 814         struct i40e_eth_stats *es;     /* device's eth stats */
 815         u32 tx_restart, tx_busy;
 816         struct i40e_ring *p;
 817         u32 rx_page, rx_buf;
 818         u64 bytes, packets;
 819         unsigned int start;
 820         u64 rx_p, rx_b;
 821         u64 tx_p, tx_b;
 822         u16 q;
 823
 824         if (test_bit(__I40E_DOWN, &vsi->state) ||
 825             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 826                 return;
 827
 828         ns = i40e_get_vsi_stats_struct(vsi);
 829         ons = &vsi->net_stats_offsets;
 830         es = &vsi->eth_stats;
 831         oes = &vsi->eth_stats_offsets;
 832
 833         /* Gather up the netdev and vsi stats that the driver collects
 834          * on the fly during packet processing
 835          */
 836         rx_b = rx_p = 0;
 837         tx_b = tx_p = 0;
 838         tx_restart = tx_busy = 0;
 839         rx_page = 0;
 840         rx_buf = 0;
 841         rcu_read_lock();
 842         for (q = 0; q < vsi->num_queue_pairs; q++) {
 843                 /* locate Tx ring */
 844                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 845
 846                 do {
 847                         start = u64_stats_fetch_begin_irq(&p->syncp);
 848                         packets = p->stats.packets;
 849                         bytes = p->stats.bytes;
 850                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 851                 tx_b += bytes;
 852                 tx_p += packets;
 853                 tx_restart += p->tx_stats.restart_queue;
 854                 tx_busy += p->tx_stats.tx_busy;
 855
 856                 /* Rx queue is part of the same block as Tx queue */
 857                 p = &p[1];
 858                 do {
 859                         start = u64_stats_fetch_begin_irq(&p->syncp);
 860                         packets = p->stats.packets;
 861                         bytes = p->stats.bytes;
 862                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 863                 rx_b += bytes;
 864                 rx_p += packets;
 865                 rx_buf += p->rx_stats.alloc_buff_failed;
 866                 rx_page += p->rx_stats.alloc_page_failed;
 867         }
 868         rcu_read_unlock();
 869         vsi->tx_restart = tx_restart;
 870         vsi->tx_busy = tx_busy;
 871         vsi->rx_page_failed = rx_page;
 872         vsi->rx_buf_failed = rx_buf;
 873
 874         ns->rx_packets = rx_p;
 875         ns->rx_bytes = rx_b;
 876         ns->tx_packets = tx_p;
 877         ns->tx_bytes = tx_b;
 878
 879         /* update netdev stats from eth stats */
 880         i40e_update_eth_stats(vsi);
 881         ons->tx_errors = oes->tx_errors;
 882         ns->tx_errors = es->tx_errors;
 883         ons->multicast = oes->rx_multicast;
 884         ns->multicast = es->rx_multicast;
 885         ons->rx_dropped = oes->rx_discards;
 886         ns->rx_dropped = es->rx_discards;
 887         ons->tx_dropped = oes->tx_discards;
 888         ns->tx_dropped = es->tx_discards;
 889
 890         /* pull in a couple PF stats if this is the main vsi */
 891         if (vsi == pf->vsi[pf->lan_vsi]) {
 892                 ns->rx_crc_errors = pf->stats.crc_errors;
 893                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 894                 ns->rx_length_errors = pf->stats.rx_length_errors;
 895         }
 896 }
 897
 898 /**
 899  * i40e_update_pf_stats - Update the pf statistics counters.
 900  * @pf: the PF to be updated
 901  **/
 902 static void i40e_update_pf_stats(struct i40e_pf *pf)
 903 {
 904         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 905         struct i40e_hw_port_stats *nsd = &pf->stats;
 906         struct i40e_hw *hw = &pf->hw;
 907         u32 val;
 908         int i;
 909
 910         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 911                            I40E_GLPRT_GORCL(hw->port),
 912                            pf->stat_offsets_loaded,
 913                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 914         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 915                            I40E_GLPRT_GOTCL(hw->port),
 916                            pf->stat_offsets_loaded,
 917                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 918         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 919                            pf->stat_offsets_loaded,
 920                            &osd->eth.rx_discards,
 921                            &nsd->eth.rx_discards);
 922         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 923                            I40E_GLPRT_UPRCL(hw->port),
 924                            pf->stat_offsets_loaded,
 925                            &osd->eth.rx_unicast,
 926                            &nsd->eth.rx_unicast);
 927         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 928                            I40E_GLPRT_MPRCL(hw->port),
 929                            pf->stat_offsets_loaded,
 930                            &osd->eth.rx_multicast,
 931                            &nsd->eth.rx_multicast);
 932         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 933                            I40E_GLPRT_BPRCL(hw->port),
 934                            pf->stat_offsets_loaded,
 935                            &osd->eth.rx_broadcast,
 936                            &nsd->eth.rx_broadcast);
 937         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 938                            I40E_GLPRT_UPTCL(hw->port),
 939                            pf->stat_offsets_loaded,
 940                            &osd->eth.tx_unicast,
 941                            &nsd->eth.tx_unicast);
 942         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 943                            I40E_GLPRT_MPTCL(hw->port),
 944                            pf->stat_offsets_loaded,
 945                            &osd->eth.tx_multicast,
 946                            &nsd->eth.tx_multicast);
 947         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 948                            I40E_GLPRT_BPTCL(hw->port),
 949                            pf->stat_offsets_loaded,
 950                            &osd->eth.tx_broadcast,
 951                            &nsd->eth.tx_broadcast);
 952
 953         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 954                            pf->stat_offsets_loaded,
 955                            &osd->tx_dropped_link_down,
 956                            &nsd->tx_dropped_link_down);
 957
 958         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 959                            pf->stat_offsets_loaded,
 960                            &osd->crc_errors, &nsd->crc_errors);
 961
 962         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 963                            pf->stat_offsets_loaded,
 964                            &osd->illegal_bytes, &nsd->illegal_bytes);
 965
 966         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 967                            pf->stat_offsets_loaded,
 968                            &osd->mac_local_faults,
 969                            &nsd->mac_local_faults);
 970         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 971                            pf->stat_offsets_loaded,
 972                            &osd->mac_remote_faults,
 973                            &nsd->mac_remote_faults);
 974
 975         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 976                            pf->stat_offsets_loaded,
 977                            &osd->rx_length_errors,
 978                            &nsd->rx_length_errors);
 979
 980         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 981                            pf->stat_offsets_loaded,
 982                            &osd->link_xon_rx, &nsd->link_xon_rx);
 983         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 984                            pf->stat_offsets_loaded,
 985                            &osd->link_xon_tx, &nsd->link_xon_tx);
 986         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
 987         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 988                            pf->stat_offsets_loaded,
 989                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 990
 991         for (i = 0; i < 8; i++) {
 992                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 993                                    pf->stat_offsets_loaded,
 994                                    &osd->priority_xon_rx[i],
 995                                    &nsd->priority_xon_rx[i]);
 996                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 997                                    pf->stat_offsets_loaded,
 998                                    &osd->priority_xon_tx[i],
 999                                    &nsd->priority_xon_tx[i]);
1000                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1001                                    pf->stat_offsets_loaded,
1002                                    &osd->priority_xoff_tx[i],
1003                                    &nsd->priority_xoff_tx[i]);
1004                 i40e_stat_update32(hw,
1005                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1006                                    pf->stat_offsets_loaded,
1007                                    &osd->priority_xon_2_xoff[i],
1008                                    &nsd->priority_xon_2_xoff[i]);
1009         }
1010
1011         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1012                            I40E_GLPRT_PRC64L(hw->port),
1013                            pf->stat_offsets_loaded,
1014                            &osd->rx_size_64, &nsd->rx_size_64);
1015         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1016                            I40E_GLPRT_PRC127L(hw->port),
1017                            pf->stat_offsets_loaded,
1018                            &osd->rx_size_127, &nsd->rx_size_127);
1019         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1020                            I40E_GLPRT_PRC255L(hw->port),
1021                            pf->stat_offsets_loaded,
1022                            &osd->rx_size_255, &nsd->rx_size_255);
1023         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1024                            I40E_GLPRT_PRC511L(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->rx_size_511, &nsd->rx_size_511);
1027         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1028                            I40E_GLPRT_PRC1023L(hw->port),
1029                            pf->stat_offsets_loaded,
1030                            &osd->rx_size_1023, &nsd->rx_size_1023);
1031         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1032                            I40E_GLPRT_PRC1522L(hw->port),
1033                            pf->stat_offsets_loaded,
1034                            &osd->rx_size_1522, &nsd->rx_size_1522);
1035         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1036                            I40E_GLPRT_PRC9522L(hw->port),
1037                            pf->stat_offsets_loaded,
1038                            &osd->rx_size_big, &nsd->rx_size_big);
1039
1040         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1041                            I40E_GLPRT_PTC64L(hw->port),
1042                            pf->stat_offsets_loaded,
1043                            &osd->tx_size_64, &nsd->tx_size_64);
1044         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1045                            I40E_GLPRT_PTC127L(hw->port),
1046                            pf->stat_offsets_loaded,
1047                            &osd->tx_size_127, &nsd->tx_size_127);
1048         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1049                            I40E_GLPRT_PTC255L(hw->port),
1050                            pf->stat_offsets_loaded,
1051                            &osd->tx_size_255, &nsd->tx_size_255);
1052         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1053                            I40E_GLPRT_PTC511L(hw->port),
1054                            pf->stat_offsets_loaded,
1055                            &osd->tx_size_511, &nsd->tx_size_511);
1056         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1057                            I40E_GLPRT_PTC1023L(hw->port),
1058                            pf->stat_offsets_loaded,
1059                            &osd->tx_size_1023, &nsd->tx_size_1023);
1060         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1061                            I40E_GLPRT_PTC1522L(hw->port),
1062                            pf->stat_offsets_loaded,
1063                            &osd->tx_size_1522, &nsd->tx_size_1522);
1064         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1065                            I40E_GLPRT_PTC9522L(hw->port),
1066                            pf->stat_offsets_loaded,
1067                            &osd->tx_size_big, &nsd->tx_size_big);
1068
1069         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1070                            pf->stat_offsets_loaded,
1071                            &osd->rx_undersize, &nsd->rx_undersize);
1072         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1073                            pf->stat_offsets_loaded,
1074                            &osd->rx_fragments, &nsd->rx_fragments);
1075         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1076                            pf->stat_offsets_loaded,
1077                            &osd->rx_oversize, &nsd->rx_oversize);
1078         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1079                            pf->stat_offsets_loaded,
1080                            &osd->rx_jabber, &nsd->rx_jabber);
1081
1082         /* FDIR stats */
1083         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_atr_cnt_idx),
1084                            pf->stat_offsets_loaded,
1085                            &osd->fd_atr_match, &nsd->fd_atr_match);
1086         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_sb_cnt_idx),
1087                            pf->stat_offsets_loaded,
1088                            &osd->fd_sb_match, &nsd->fd_sb_match);
1089
1090         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1091         nsd->tx_lpi_status =
1092                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1093                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1094         nsd->rx_lpi_status =
1095                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1096                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1097         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1098                            pf->stat_offsets_loaded,
1099                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1100         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1101                            pf->stat_offsets_loaded,
1102                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1103
1104         pf->stat_offsets_loaded = true;
1105 }
1106
1107 /**
1108  * i40e_update_stats - Update the various statistics counters.
1109  * @vsi: the VSI to be updated
1110  *
1111  * Update the various stats for this VSI and its related entities.
1112  **/
1113 void i40e_update_stats(struct i40e_vsi *vsi)
1114 {
1115         struct i40e_pf *pf = vsi->back;
1116
1117         if (vsi == pf->vsi[pf->lan_vsi])
1118                 i40e_update_pf_stats(pf);
1119
1120         i40e_update_vsi_stats(vsi);
1121 #ifdef I40E_FCOE
1122         i40e_update_fcoe_stats(vsi);
1123 #endif
1124 }
1125
1126 /**
1127  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1128  * @vsi: the VSI to be searched
1129  * @macaddr: the MAC address
1130  * @vlan: the vlan
1131  * @is_vf: make sure its a vf filter, else doesn't matter
1132  * @is_netdev: make sure its a netdev filter, else doesn't matter
1133  *
1134  * Returns ptr to the filter object or NULL
1135  **/
1136 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1137                                                 u8 *macaddr, s16 vlan,
1138                                                 bool is_vf, bool is_netdev)
1139 {
1140         struct i40e_mac_filter *f;
1141
1142         if (!vsi || !macaddr)
1143                 return NULL;
1144
1145         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1146                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1147                     (vlan == f->vlan)    &&
1148                     (!is_vf || f->is_vf) &&
1149                     (!is_netdev || f->is_netdev))
1150                         return f;
1151         }
1152         return NULL;
1153 }
1154
1155 /**
1156  * i40e_find_mac - Find a mac addr in the macvlan filters list
1157  * @vsi: the VSI to be searched
1158  * @macaddr: the MAC address we are searching for
1159  * @is_vf: make sure its a vf filter, else doesn't matter
1160  * @is_netdev: make sure its a netdev filter, else doesn't matter
1161  *
1162  * Returns the first filter with the provided MAC address or NULL if
1163  * MAC address was not found
1164  **/
1165 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1166                                       bool is_vf, bool is_netdev)
1167 {
1168         struct i40e_mac_filter *f;
1169
1170         if (!vsi || !macaddr)
1171                 return NULL;
1172
1173         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1174                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1175                     (!is_vf || f->is_vf) &&
1176                     (!is_netdev || f->is_netdev))
1177                         return f;
1178         }
1179         return NULL;
1180 }
1181
1182 /**
1183  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1184  * @vsi: the VSI to be searched
1185  *
1186  * Returns true if VSI is in vlan mode or false otherwise
1187  **/
1188 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1189 {
1190         struct i40e_mac_filter *f;
1191
1192         /* Only -1 for all the filters denotes not in vlan mode
1193          * so we have to go through all the list in order to make sure
1194          */
1195         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1196                 if (f->vlan >= 0)
1197                         return true;
1198         }
1199
1200         return false;
1201 }
1202
1203 /**
1204  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1205  * @vsi: the VSI to be searched
1206  * @macaddr: the mac address to be filtered
1207  * @is_vf: true if it is a vf
1208  * @is_netdev: true if it is a netdev
1209  *
1210  * Goes through all the macvlan filters and adds a
1211  * macvlan filter for each unique vlan that already exists
1212  *
1213  * Returns first filter found on success, else NULL
1214  **/
1215 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1216                                              bool is_vf, bool is_netdev)
1217 {
1218         struct i40e_mac_filter *f;
1219
1220         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1221                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1222                                       is_vf, is_netdev)) {
1223                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1224                                              is_vf, is_netdev))
1225                                 return NULL;
1226                 }
1227         }
1228
1229         return list_first_entry_or_null(&vsi->mac_filter_list,
1230                                         struct i40e_mac_filter, list);
1231 }
1232
1233 /**
1234  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1235  * @vsi: the PF Main VSI - inappropriate for any other VSI
1236  * @macaddr: the MAC address
1237  *
1238  * Some older firmware configurations set up a default promiscuous VLAN
1239  * filter that needs to be removed.
1240  **/
1241 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1242 {
1243         struct i40e_aqc_remove_macvlan_element_data element;
1244         struct i40e_pf *pf = vsi->back;
1245         i40e_status aq_ret;
1246
1247         /* Only appropriate for the PF main VSI */
1248         if (vsi->type != I40E_VSI_MAIN)
1249                 return -EINVAL;
1250
1251         memset(&element, 0, sizeof(element));
1252         ether_addr_copy(element.mac_addr, macaddr);
1253         element.vlan_tag = 0;
1254         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1255                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1256         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1257         if (aq_ret)
1258                 return -ENOENT;
1259
1260         return 0;
1261 }
1262
1263 /**
1264  * i40e_add_filter - Add a mac/vlan filter to the VSI
1265  * @vsi: the VSI to be searched
1266  * @macaddr: the MAC address
1267  * @vlan: the vlan
1268  * @is_vf: make sure its a vf filter, else doesn't matter
1269  * @is_netdev: make sure its a netdev filter, else doesn't matter
1270  *
1271  * Returns ptr to the filter object or NULL when no memory available.
1272  **/
1273 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1274                                         u8 *macaddr, s16 vlan,
1275                                         bool is_vf, bool is_netdev)
1276 {
1277         struct i40e_mac_filter *f;
1278
1279         if (!vsi || !macaddr)
1280                 return NULL;
1281
1282         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1283         if (!f) {
1284                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1285                 if (!f)
1286                         goto add_filter_out;
1287
1288                 ether_addr_copy(f->macaddr, macaddr);
1289                 f->vlan = vlan;
1290                 f->changed = true;
1291
1292                 INIT_LIST_HEAD(&f->list);
1293                 list_add(&f->list, &vsi->mac_filter_list);
1294         }
1295
1296         /* increment counter and add a new flag if needed */
1297         if (is_vf) {
1298                 if (!f->is_vf) {
1299                         f->is_vf = true;
1300                         f->counter++;
1301                 }
1302         } else if (is_netdev) {
1303                 if (!f->is_netdev) {
1304                         f->is_netdev = true;
1305                         f->counter++;
1306                 }
1307         } else {
1308                 f->counter++;
1309         }
1310
1311         /* changed tells sync_filters_subtask to
1312          * push the filter down to the firmware
1313          */
1314         if (f->changed) {
1315                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1316                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1317         }
1318
1319 add_filter_out:
1320         return f;
1321 }
1322
1323 /**
1324  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1325  * @vsi: the VSI to be searched
1326  * @macaddr: the MAC address
1327  * @vlan: the vlan
1328  * @is_vf: make sure it's a vf filter, else doesn't matter
1329  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1330  **/
1331 void i40e_del_filter(struct i40e_vsi *vsi,
1332                      u8 *macaddr, s16 vlan,
1333                      bool is_vf, bool is_netdev)
1334 {
1335         struct i40e_mac_filter *f;
1336
1337         if (!vsi || !macaddr)
1338                 return;
1339
1340         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1341         if (!f || f->counter == 0)
1342                 return;
1343
1344         if (is_vf) {
1345                 if (f->is_vf) {
1346                         f->is_vf = false;
1347                         f->counter--;
1348                 }
1349         } else if (is_netdev) {
1350                 if (f->is_netdev) {
1351                         f->is_netdev = false;
1352                         f->counter--;
1353                 }
1354         } else {
1355                 /* make sure we don't remove a filter in use by vf or netdev */
1356                 int min_f = 0;
1357                 min_f += (f->is_vf ? 1 : 0);
1358                 min_f += (f->is_netdev ? 1 : 0);
1359
1360                 if (f->counter > min_f)
1361                         f->counter--;
1362         }
1363
1364         /* counter == 0 tells sync_filters_subtask to
1365          * remove the filter from the firmware's list
1366          */
1367         if (f->counter == 0) {
1368                 f->changed = true;
1369                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1370                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1371         }
1372 }
1373
1374 /**
1375  * i40e_set_mac - NDO callback to set mac address
1376  * @netdev: network interface device structure
1377  * @p: pointer to an address structure
1378  *
1379  * Returns 0 on success, negative on failure
1380  **/
1381 #ifdef I40E_FCOE
1382 int i40e_set_mac(struct net_device *netdev, void *p)
1383 #else
1384 static int i40e_set_mac(struct net_device *netdev, void *p)
1385 #endif
1386 {
1387         struct i40e_netdev_priv *np = netdev_priv(netdev);
1388         struct i40e_vsi *vsi = np->vsi;
1389         struct i40e_pf *pf = vsi->back;
1390         struct i40e_hw *hw = &pf->hw;
1391         struct sockaddr *addr = p;
1392         struct i40e_mac_filter *f;
1393
1394         if (!is_valid_ether_addr(addr->sa_data))
1395                 return -EADDRNOTAVAIL;
1396
1397         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1398                 netdev_info(netdev, "already using mac address %pM\n",
1399                             addr->sa_data);
1400                 return 0;
1401         }
1402
1403         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1404             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1405                 return -EADDRNOTAVAIL;
1406
1407         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1408                 netdev_info(netdev, "returning to hw mac address %pM\n",
1409                             hw->mac.addr);
1410         else
1411                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1412
1413         if (vsi->type == I40E_VSI_MAIN) {
1414                 i40e_status ret;
1415                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1416                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1417                                                 addr->sa_data, NULL);
1418                 if (ret) {
1419                         netdev_info(netdev,
1420                                     "Addr change for Main VSI failed: %d\n",
1421                                     ret);
1422                         return -EADDRNOTAVAIL;
1423                 }
1424         }
1425
1426         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1427                 struct i40e_aqc_remove_macvlan_element_data element;
1428
1429                 memset(&element, 0, sizeof(element));
1430                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1431                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1432                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1433         } else {
1434                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1435                                 false, false);
1436         }
1437
1438         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1439                 struct i40e_aqc_add_macvlan_element_data element;
1440
1441                 memset(&element, 0, sizeof(element));
1442                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1443                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1444                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1445         } else {
1446                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1447                                     false, false);
1448                 if (f)
1449                         f->is_laa = true;
1450         }
1451
1452         i40e_sync_vsi_filters(vsi);
1453         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1454
1455         return 0;
1456 }
1457
1458 /**
1459  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1460  * @vsi: the VSI being setup
1461  * @ctxt: VSI context structure
1462  * @enabled_tc: Enabled TCs bitmap
1463  * @is_add: True if called before Add VSI
1464  *
1465  * Setup VSI queue mapping for enabled traffic classes.
1466  **/
1467 #ifdef I40E_FCOE
1468 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1469                               struct i40e_vsi_context *ctxt,
1470                               u8 enabled_tc,
1471                               bool is_add)
1472 #else
1473 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1474                                      struct i40e_vsi_context *ctxt,
1475                                      u8 enabled_tc,
1476                                      bool is_add)
1477 #endif
1478 {
1479         struct i40e_pf *pf = vsi->back;
1480         u16 sections = 0;
1481         u8 netdev_tc = 0;
1482         u16 numtc = 0;
1483         u16 qcount;
1484         u8 offset;
1485         u16 qmap;
1486         int i;
1487         u16 num_tc_qps = 0;
1488
1489         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1490         offset = 0;
1491
1492         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1493                 /* Find numtc from enabled TC bitmap */
1494                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1495                         if (enabled_tc & (1 << i)) /* TC is enabled */
1496                                 numtc++;
1497                 }
1498                 if (!numtc) {
1499                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1500                         numtc = 1;
1501                 }
1502         } else {
1503                 /* At least TC0 is enabled in case of non-DCB case */
1504                 numtc = 1;
1505         }
1506
1507         vsi->tc_config.numtc = numtc;
1508         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1509         /* Number of queues per enabled TC */
1510         num_tc_qps = vsi->alloc_queue_pairs/numtc;
1511         num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
1512
1513         /* Setup queue offset/count for all TCs for given VSI */
1514         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1515                 /* See if the given TC is enabled for the given VSI */
1516                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1517                         int pow, num_qps;
1518
1519                         switch (vsi->type) {
1520                         case I40E_VSI_MAIN:
1521                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1522                                 break;
1523 #ifdef I40E_FCOE
1524                         case I40E_VSI_FCOE:
1525                                 qcount = num_tc_qps;
1526                                 break;
1527 #endif
1528                         case I40E_VSI_FDIR:
1529                         case I40E_VSI_SRIOV:
1530                         case I40E_VSI_VMDQ2:
1531                         default:
1532                                 qcount = num_tc_qps;
1533                                 WARN_ON(i != 0);
1534                                 break;
1535                         }
1536                         vsi->tc_config.tc_info[i].qoffset = offset;
1537                         vsi->tc_config.tc_info[i].qcount = qcount;
1538
1539                         /* find the power-of-2 of the number of queue pairs */
1540                         num_qps = qcount;
1541                         pow = 0;
1542                         while (num_qps && ((1 << pow) < qcount)) {
1543                                 pow++;
1544                                 num_qps >>= 1;
1545                         }
1546
1547                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1548                         qmap =
1549                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1550                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1551
1552                         offset += qcount;
1553                 } else {
1554                         /* TC is not enabled so set the offset to
1555                          * default queue and allocate one queue
1556                          * for the given TC.
1557                          */
1558                         vsi->tc_config.tc_info[i].qoffset = 0;
1559                         vsi->tc_config.tc_info[i].qcount = 1;
1560                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1561
1562                         qmap = 0;
1563                 }
1564                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1565         }
1566
1567         /* Set actual Tx/Rx queue pairs */
1568         vsi->num_queue_pairs = offset;
1569
1570         /* Scheduler section valid can only be set for ADD VSI */
1571         if (is_add) {
1572                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1573
1574                 ctxt->info.up_enable_bits = enabled_tc;
1575         }
1576         if (vsi->type == I40E_VSI_SRIOV) {
1577                 ctxt->info.mapping_flags |=
1578                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1579                 for (i = 0; i < vsi->num_queue_pairs; i++)
1580                         ctxt->info.queue_mapping[i] =
1581                                                cpu_to_le16(vsi->base_queue + i);
1582         } else {
1583                 ctxt->info.mapping_flags |=
1584                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1585                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1586         }
1587         ctxt->info.valid_sections |= cpu_to_le16(sections);
1588 }
1589
1590 /**
1591  * i40e_set_rx_mode - NDO callback to set the netdev filters
1592  * @netdev: network interface device structure
1593  **/
1594 #ifdef I40E_FCOE
1595 void i40e_set_rx_mode(struct net_device *netdev)
1596 #else
1597 static void i40e_set_rx_mode(struct net_device *netdev)
1598 #endif
1599 {
1600         struct i40e_netdev_priv *np = netdev_priv(netdev);
1601         struct i40e_mac_filter *f, *ftmp;
1602         struct i40e_vsi *vsi = np->vsi;
1603         struct netdev_hw_addr *uca;
1604         struct netdev_hw_addr *mca;
1605         struct netdev_hw_addr *ha;
1606
1607         /* add addr if not already in the filter list */
1608         netdev_for_each_uc_addr(uca, netdev) {
1609                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1610                         if (i40e_is_vsi_in_vlan(vsi))
1611                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1612                                                      false, true);
1613                         else
1614                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1615                                                 false, true);
1616                 }
1617         }
1618
1619         netdev_for_each_mc_addr(mca, netdev) {
1620                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1621                         if (i40e_is_vsi_in_vlan(vsi))
1622                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1623                                                      false, true);
1624                         else
1625                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1626                                                 false, true);
1627                 }
1628         }
1629
1630         /* remove filter if not in netdev list */
1631         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1632                 bool found = false;
1633
1634                 if (!f->is_netdev)
1635                         continue;
1636
1637                 if (is_multicast_ether_addr(f->macaddr)) {
1638                         netdev_for_each_mc_addr(mca, netdev) {
1639                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1640                                         found = true;
1641                                         break;
1642                                 }
1643                         }
1644                 } else {
1645                         netdev_for_each_uc_addr(uca, netdev) {
1646                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1647                                         found = true;
1648                                         break;
1649                                 }
1650                         }
1651
1652                         for_each_dev_addr(netdev, ha) {
1653                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1654                                         found = true;
1655                                         break;
1656                                 }
1657                         }
1658                 }
1659                 if (!found)
1660                         i40e_del_filter(
1661                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1662         }
1663
1664         /* check for other flag changes */
1665         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1666                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1667                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1668         }
1669 }
1670
1671 /**
1672  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1673  * @vsi: ptr to the VSI
1674  *
1675  * Push any outstanding VSI filter changes through the AdminQ.
1676  *
1677  * Returns 0 or error value
1678  **/
1679 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1680 {
1681         struct i40e_mac_filter *f, *ftmp;
1682         bool promisc_forced_on = false;
1683         bool add_happened = false;
1684         int filter_list_len = 0;
1685         u32 changed_flags = 0;
1686         i40e_status aq_ret = 0;
1687         struct i40e_pf *pf;
1688         int num_add = 0;
1689         int num_del = 0;
1690         u16 cmd_flags;
1691
1692         /* empty array typed pointers, kcalloc later */
1693         struct i40e_aqc_add_macvlan_element_data *add_list;
1694         struct i40e_aqc_remove_macvlan_element_data *del_list;
1695
1696         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1697                 usleep_range(1000, 2000);
1698         pf = vsi->back;
1699
1700         if (vsi->netdev) {
1701                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1702                 vsi->current_netdev_flags = vsi->netdev->flags;
1703         }
1704
1705         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1706                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1707
1708                 filter_list_len = pf->hw.aq.asq_buf_size /
1709                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1710                 del_list = kcalloc(filter_list_len,
1711                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1712                             GFP_KERNEL);
1713                 if (!del_list)
1714                         return -ENOMEM;
1715
1716                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1717                         if (!f->changed)
1718                                 continue;
1719
1720                         if (f->counter != 0)
1721                                 continue;
1722                         f->changed = false;
1723                         cmd_flags = 0;
1724
1725                         /* add to delete list */
1726                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1727                         del_list[num_del].vlan_tag =
1728                                 cpu_to_le16((u16)(f->vlan ==
1729                                             I40E_VLAN_ANY ? 0 : f->vlan));
1730
1731                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1732                         del_list[num_del].flags = cmd_flags;
1733                         num_del++;
1734
1735                         /* unlink from filter list */
1736                         list_del(&f->list);
1737                         kfree(f);
1738
1739                         /* flush a full buffer */
1740                         if (num_del == filter_list_len) {
1741                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1742                                             vsi->seid, del_list, num_del,
1743                                             NULL);
1744                                 num_del = 0;
1745                                 memset(del_list, 0, sizeof(*del_list));
1746
1747                                 if (aq_ret &&
1748                                     pf->hw.aq.asq_last_status !=
1749                                                               I40E_AQ_RC_ENOENT)
1750                                         dev_info(&pf->pdev->dev,
1751                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1752                                                  aq_ret,
1753                                                  pf->hw.aq.asq_last_status);
1754                         }
1755                 }
1756                 if (num_del) {
1757                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1758                                                      del_list, num_del, NULL);
1759                         num_del = 0;
1760
1761                         if (aq_ret &&
1762                             pf->hw.aq.asq_last_status != I40E_AQ_RC_ENOENT)
1763                                 dev_info(&pf->pdev->dev,
1764                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1765                                          aq_ret, pf->hw.aq.asq_last_status);
1766                 }
1767
1768                 kfree(del_list);
1769                 del_list = NULL;
1770
1771                 /* do all the adds now */
1772                 filter_list_len = pf->hw.aq.asq_buf_size /
1773                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1774                 add_list = kcalloc(filter_list_len,
1775                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1776                                GFP_KERNEL);
1777                 if (!add_list)
1778                         return -ENOMEM;
1779
1780                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1781                         if (!f->changed)
1782                                 continue;
1783
1784                         if (f->counter == 0)
1785                                 continue;
1786                         f->changed = false;
1787                         add_happened = true;
1788                         cmd_flags = 0;
1789
1790                         /* add to add array */
1791                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1792                         add_list[num_add].vlan_tag =
1793                                 cpu_to_le16(
1794                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1795                         add_list[num_add].queue_number = 0;
1796
1797                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1798                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1799                         num_add++;
1800
1801                         /* flush a full buffer */
1802                         if (num_add == filter_list_len) {
1803                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1804                                                              add_list, num_add,
1805                                                              NULL);
1806                                 num_add = 0;
1807
1808                                 if (aq_ret)
1809                                         break;
1810                                 memset(add_list, 0, sizeof(*add_list));
1811                         }
1812                 }
1813                 if (num_add) {
1814                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1815                                                      add_list, num_add, NULL);
1816                         num_add = 0;
1817                 }
1818                 kfree(add_list);
1819                 add_list = NULL;
1820
1821                 if (add_happened && aq_ret &&
1822                     pf->hw.aq.asq_last_status != I40E_AQ_RC_EINVAL) {
1823                         dev_info(&pf->pdev->dev,
1824                                  "add filter failed, err %d, aq_err %d\n",
1825                                  aq_ret, pf->hw.aq.asq_last_status);
1826                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1827                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1828                                       &vsi->state)) {
1829                                 promisc_forced_on = true;
1830                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1831                                         &vsi->state);
1832                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1833                         }
1834                 }
1835         }
1836
1837         /* check for changes in promiscuous modes */
1838         if (changed_flags & IFF_ALLMULTI) {
1839                 bool cur_multipromisc;
1840                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1841                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1842                                                                vsi->seid,
1843                                                                cur_multipromisc,
1844                                                                NULL);
1845                 if (aq_ret)
1846                         dev_info(&pf->pdev->dev,
1847                                  "set multi promisc failed, err %d, aq_err %d\n",
1848                                  aq_ret, pf->hw.aq.asq_last_status);
1849         }
1850         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1851                 bool cur_promisc;
1852                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1853                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1854                                         &vsi->state));
1855                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1856                                                              vsi->seid,
1857                                                              cur_promisc, NULL);
1858                 if (aq_ret)
1859                         dev_info(&pf->pdev->dev,
1860                                  "set uni promisc failed, err %d, aq_err %d\n",
1861                                  aq_ret, pf->hw.aq.asq_last_status);
1862                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1863                                                    vsi->seid,
1864                                                    cur_promisc, NULL);
1865                 if (aq_ret)
1866                         dev_info(&pf->pdev->dev,
1867                                  "set brdcast promisc failed, err %d, aq_err %d\n",
1868                                  aq_ret, pf->hw.aq.asq_last_status);
1869         }
1870
1871         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1872         return 0;
1873 }
1874
1875 /**
1876  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1877  * @pf: board private structure
1878  **/
1879 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1880 {
1881         int v;
1882
1883         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1884                 return;
1885         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1886
1887         for (v = 0; v < pf->num_alloc_vsi; v++) {
1888                 if (pf->vsi[v] &&
1889                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1890                         i40e_sync_vsi_filters(pf->vsi[v]);
1891         }
1892 }
1893
1894 /**
1895  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1896  * @netdev: network interface device structure
1897  * @new_mtu: new value for maximum frame size
1898  *
1899  * Returns 0 on success, negative on failure
1900  **/
1901 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1902 {
1903         struct i40e_netdev_priv *np = netdev_priv(netdev);
1904         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1905         struct i40e_vsi *vsi = np->vsi;
1906
1907         /* MTU < 68 is an error and causes problems on some kernels */
1908         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1909                 return -EINVAL;
1910
1911         netdev_info(netdev, "changing MTU from %d to %d\n",
1912                     netdev->mtu, new_mtu);
1913         netdev->mtu = new_mtu;
1914         if (netif_running(netdev))
1915                 i40e_vsi_reinit_locked(vsi);
1916
1917         return 0;
1918 }
1919
1920 /**
1921  * i40e_ioctl - Access the hwtstamp interface
1922  * @netdev: network interface device structure
1923  * @ifr: interface request data
1924  * @cmd: ioctl command
1925  **/
1926 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1927 {
1928         struct i40e_netdev_priv *np = netdev_priv(netdev);
1929         struct i40e_pf *pf = np->vsi->back;
1930
1931         switch (cmd) {
1932         case SIOCGHWTSTAMP:
1933                 return i40e_ptp_get_ts_config(pf, ifr);
1934         case SIOCSHWTSTAMP:
1935                 return i40e_ptp_set_ts_config(pf, ifr);
1936         default:
1937                 return -EOPNOTSUPP;
1938         }
1939 }
1940
1941 /**
1942  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1943  * @vsi: the vsi being adjusted
1944  **/
1945 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1946 {
1947         struct i40e_vsi_context ctxt;
1948         i40e_status ret;
1949
1950         if ((vsi->info.valid_sections &
1951              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1952             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1953                 return;  /* already enabled */
1954
1955         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1956         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1957                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1958
1959         ctxt.seid = vsi->seid;
1960         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1961         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1962         if (ret) {
1963                 dev_info(&vsi->back->pdev->dev,
1964                          "%s: update vsi failed, aq_err=%d\n",
1965                          __func__, vsi->back->hw.aq.asq_last_status);
1966         }
1967 }
1968
1969 /**
1970  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1971  * @vsi: the vsi being adjusted
1972  **/
1973 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1974 {
1975         struct i40e_vsi_context ctxt;
1976         i40e_status ret;
1977
1978         if ((vsi->info.valid_sections &
1979              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1980             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1981              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1982                 return;  /* already disabled */
1983
1984         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1985         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1986                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1987
1988         ctxt.seid = vsi->seid;
1989         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1990         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1991         if (ret) {
1992                 dev_info(&vsi->back->pdev->dev,
1993                          "%s: update vsi failed, aq_err=%d\n",
1994                          __func__, vsi->back->hw.aq.asq_last_status);
1995         }
1996 }
1997
1998 /**
1999  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2000  * @netdev: network interface to be adjusted
2001  * @features: netdev features to test if VLAN offload is enabled or not
2002  **/
2003 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2004 {
2005         struct i40e_netdev_priv *np = netdev_priv(netdev);
2006         struct i40e_vsi *vsi = np->vsi;
2007
2008         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2009                 i40e_vlan_stripping_enable(vsi);
2010         else
2011                 i40e_vlan_stripping_disable(vsi);
2012 }
2013
2014 /**
2015  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2016  * @vsi: the vsi being configured
2017  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2018  **/
2019 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2020 {
2021         struct i40e_mac_filter *f, *add_f;
2022         bool is_netdev, is_vf;
2023
2024         is_vf = (vsi->type == I40E_VSI_SRIOV);
2025         is_netdev = !!(vsi->netdev);
2026
2027         if (is_netdev) {
2028                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2029                                         is_vf, is_netdev);
2030                 if (!add_f) {
2031                         dev_info(&vsi->back->pdev->dev,
2032                                  "Could not add vlan filter %d for %pM\n",
2033                                  vid, vsi->netdev->dev_addr);
2034                         return -ENOMEM;
2035                 }
2036         }
2037
2038         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2039                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2040                 if (!add_f) {
2041                         dev_info(&vsi->back->pdev->dev,
2042                                  "Could not add vlan filter %d for %pM\n",
2043                                  vid, f->macaddr);
2044                         return -ENOMEM;
2045                 }
2046         }
2047
2048         /* Now if we add a vlan tag, make sure to check if it is the first
2049          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2050          * with 0, so we now accept untagged and specified tagged traffic
2051          * (and not any taged and untagged)
2052          */
2053         if (vid > 0) {
2054                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2055                                                   I40E_VLAN_ANY,
2056                                                   is_vf, is_netdev)) {
2057                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2058                                         I40E_VLAN_ANY, is_vf, is_netdev);
2059                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2060                                                 is_vf, is_netdev);
2061                         if (!add_f) {
2062                                 dev_info(&vsi->back->pdev->dev,
2063                                          "Could not add filter 0 for %pM\n",
2064                                          vsi->netdev->dev_addr);
2065                                 return -ENOMEM;
2066                         }
2067                 }
2068         }
2069
2070         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2071         if (vid > 0 && !vsi->info.pvid) {
2072                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2073                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2074                                              is_vf, is_netdev)) {
2075                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2076                                                 is_vf, is_netdev);
2077                                 add_f = i40e_add_filter(vsi, f->macaddr,
2078                                                         0, is_vf, is_netdev);
2079                                 if (!add_f) {
2080                                         dev_info(&vsi->back->pdev->dev,
2081                                                  "Could not add filter 0 for %pM\n",
2082                                                  f->macaddr);
2083                                         return -ENOMEM;
2084                                 }
2085                         }
2086                 }
2087         }
2088
2089         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2090             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2091                 return 0;
2092
2093         return i40e_sync_vsi_filters(vsi);
2094 }
2095
2096 /**
2097  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2098  * @vsi: the vsi being configured
2099  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2100  *
2101  * Return: 0 on success or negative otherwise
2102  **/
2103 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2104 {
2105         struct net_device *netdev = vsi->netdev;
2106         struct i40e_mac_filter *f, *add_f;
2107         bool is_vf, is_netdev;
2108         int filter_count = 0;
2109
2110         is_vf = (vsi->type == I40E_VSI_SRIOV);
2111         is_netdev = !!(netdev);
2112
2113         if (is_netdev)
2114                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2115
2116         list_for_each_entry(f, &vsi->mac_filter_list, list)
2117                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2118
2119         /* go through all the filters for this VSI and if there is only
2120          * vid == 0 it means there are no other filters, so vid 0 must
2121          * be replaced with -1. This signifies that we should from now
2122          * on accept any traffic (with any tag present, or untagged)
2123          */
2124         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2125                 if (is_netdev) {
2126                         if (f->vlan &&
2127                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2128                                 filter_count++;
2129                 }
2130
2131                 if (f->vlan)
2132                         filter_count++;
2133         }
2134
2135         if (!filter_count && is_netdev) {
2136                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2137                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2138                                     is_vf, is_netdev);
2139                 if (!f) {
2140                         dev_info(&vsi->back->pdev->dev,
2141                                  "Could not add filter %d for %pM\n",
2142                                  I40E_VLAN_ANY, netdev->dev_addr);
2143                         return -ENOMEM;
2144                 }
2145         }
2146
2147         if (!filter_count) {
2148                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2149                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2150                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2151                                             is_vf, is_netdev);
2152                         if (!add_f) {
2153                                 dev_info(&vsi->back->pdev->dev,
2154                                          "Could not add filter %d for %pM\n",
2155                                          I40E_VLAN_ANY, f->macaddr);
2156                                 return -ENOMEM;
2157                         }
2158                 }
2159         }
2160
2161         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2162             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2163                 return 0;
2164
2165         return i40e_sync_vsi_filters(vsi);
2166 }
2167
2168 /**
2169  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2170  * @netdev: network interface to be adjusted
2171  * @vid: vlan id to be added
2172  *
2173  * net_device_ops implementation for adding vlan ids
2174  **/
2175 #ifdef I40E_FCOE
2176 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2177                          __always_unused __be16 proto, u16 vid)
2178 #else
2179 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2180                                 __always_unused __be16 proto, u16 vid)
2181 #endif
2182 {
2183         struct i40e_netdev_priv *np = netdev_priv(netdev);
2184         struct i40e_vsi *vsi = np->vsi;
2185         int ret = 0;
2186
2187         if (vid > 4095)
2188                 return -EINVAL;
2189
2190         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2191
2192         /* If the network stack called us with vid = 0 then
2193          * it is asking to receive priority tagged packets with
2194          * vlan id 0.  Our HW receives them by default when configured
2195          * to receive untagged packets so there is no need to add an
2196          * extra filter for vlan 0 tagged packets.
2197          */
2198         if (vid)
2199                 ret = i40e_vsi_add_vlan(vsi, vid);
2200
2201         if (!ret && (vid < VLAN_N_VID))
2202                 set_bit(vid, vsi->active_vlans);
2203
2204         return ret;
2205 }
2206
2207 /**
2208  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2209  * @netdev: network interface to be adjusted
2210  * @vid: vlan id to be removed
2211  *
2212  * net_device_ops implementation for removing vlan ids
2213  **/
2214 #ifdef I40E_FCOE
2215 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2216                           __always_unused __be16 proto, u16 vid)
2217 #else
2218 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2219                                  __always_unused __be16 proto, u16 vid)
2220 #endif
2221 {
2222         struct i40e_netdev_priv *np = netdev_priv(netdev);
2223         struct i40e_vsi *vsi = np->vsi;
2224
2225         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2226
2227         /* return code is ignored as there is nothing a user
2228          * can do about failure to remove and a log message was
2229          * already printed from the other function
2230          */
2231         i40e_vsi_kill_vlan(vsi, vid);
2232
2233         clear_bit(vid, vsi->active_vlans);
2234
2235         return 0;
2236 }
2237
2238 /**
2239  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2240  * @vsi: the vsi being brought back up
2241  **/
2242 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2243 {
2244         u16 vid;
2245
2246         if (!vsi->netdev)
2247                 return;
2248
2249         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2250
2251         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2252                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2253                                      vid);
2254 }
2255
2256 /**
2257  * i40e_vsi_add_pvid - Add pvid for the VSI
2258  * @vsi: the vsi being adjusted
2259  * @vid: the vlan id to set as a PVID
2260  **/
2261 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2262 {
2263         struct i40e_vsi_context ctxt;
2264         i40e_status aq_ret;
2265
2266         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2267         vsi->info.pvid = cpu_to_le16(vid);
2268         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2269                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2270                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2271
2272         ctxt.seid = vsi->seid;
2273         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2274         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2275         if (aq_ret) {
2276                 dev_info(&vsi->back->pdev->dev,
2277                          "%s: update vsi failed, aq_err=%d\n",
2278                          __func__, vsi->back->hw.aq.asq_last_status);
2279                 return -ENOENT;
2280         }
2281
2282         return 0;
2283 }
2284
2285 /**
2286  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2287  * @vsi: the vsi being adjusted
2288  *
2289  * Just use the vlan_rx_register() service to put it back to normal
2290  **/
2291 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2292 {
2293         i40e_vlan_stripping_disable(vsi);
2294
2295         vsi->info.pvid = 0;
2296 }
2297
2298 /**
2299  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2300  * @vsi: ptr to the VSI
2301  *
2302  * If this function returns with an error, then it's possible one or
2303  * more of the rings is populated (while the rest are not).  It is the
2304  * callers duty to clean those orphaned rings.
2305  *
2306  * Return 0 on success, negative on failure
2307  **/
2308 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2309 {
2310         int i, err = 0;
2311
2312         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2313                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2314
2315         return err;
2316 }
2317
2318 /**
2319  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2320  * @vsi: ptr to the VSI
2321  *
2322  * Free VSI's transmit software resources
2323  **/
2324 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2325 {
2326         int i;
2327
2328         if (!vsi->tx_rings)
2329                 return;
2330
2331         for (i = 0; i < vsi->num_queue_pairs; i++)
2332                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2333                         i40e_free_tx_resources(vsi->tx_rings[i]);
2334 }
2335
2336 /**
2337  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2338  * @vsi: ptr to the VSI
2339  *
2340  * If this function returns with an error, then it's possible one or
2341  * more of the rings is populated (while the rest are not).  It is the
2342  * callers duty to clean those orphaned rings.
2343  *
2344  * Return 0 on success, negative on failure
2345  **/
2346 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2347 {
2348         int i, err = 0;
2349
2350         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2351                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2352 #ifdef I40E_FCOE
2353         i40e_fcoe_setup_ddp_resources(vsi);
2354 #endif
2355         return err;
2356 }
2357
2358 /**
2359  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2360  * @vsi: ptr to the VSI
2361  *
2362  * Free all receive software resources
2363  **/
2364 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2365 {
2366         int i;
2367
2368         if (!vsi->rx_rings)
2369                 return;
2370
2371         for (i = 0; i < vsi->num_queue_pairs; i++)
2372                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2373                         i40e_free_rx_resources(vsi->rx_rings[i]);
2374 #ifdef I40E_FCOE
2375         i40e_fcoe_free_ddp_resources(vsi);
2376 #endif
2377 }
2378
2379 /**
2380  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2381  * @ring: The Tx ring to configure
2382  *
2383  * This enables/disables XPS for a given Tx descriptor ring
2384  * based on the TCs enabled for the VSI that ring belongs to.
2385  **/
2386 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2387 {
2388         struct i40e_vsi *vsi = ring->vsi;
2389         cpumask_var_t mask;
2390
2391         if (ring->q_vector && ring->netdev) {
2392                 /* Single TC mode enable XPS */
2393                 if (vsi->tc_config.numtc <= 1 &&
2394                     !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state)) {
2395                         netif_set_xps_queue(ring->netdev,
2396                                             &ring->q_vector->affinity_mask,
2397                                             ring->queue_index);
2398                 } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2399                         /* Disable XPS to allow selection based on TC */
2400                         bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2401                         netif_set_xps_queue(ring->netdev, mask,
2402                                             ring->queue_index);
2403                         free_cpumask_var(mask);
2404                 }
2405         }
2406 }
2407
2408 /**
2409  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2410  * @ring: The Tx ring to configure
2411  *
2412  * Configure the Tx descriptor ring in the HMC context.
2413  **/
2414 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2415 {
2416         struct i40e_vsi *vsi = ring->vsi;
2417         u16 pf_q = vsi->base_queue + ring->queue_index;
2418         struct i40e_hw *hw = &vsi->back->hw;
2419         struct i40e_hmc_obj_txq tx_ctx;
2420         i40e_status err = 0;
2421         u32 qtx_ctl = 0;
2422
2423         /* some ATR related tx ring init */
2424         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2425                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2426                 ring->atr_count = 0;
2427         } else {
2428                 ring->atr_sample_rate = 0;
2429         }
2430
2431         /* configure XPS */
2432         i40e_config_xps_tx_ring(ring);
2433
2434         /* clear the context structure first */
2435         memset(&tx_ctx, 0, sizeof(tx_ctx));
2436
2437         tx_ctx.new_context = 1;
2438         tx_ctx.base = (ring->dma / 128);
2439         tx_ctx.qlen = ring->count;
2440         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2441                                                I40E_FLAG_FD_ATR_ENABLED));
2442 #ifdef I40E_FCOE
2443         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2444 #endif
2445         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2446         /* FDIR VSI tx ring can still use RS bit and writebacks */
2447         if (vsi->type != I40E_VSI_FDIR)
2448                 tx_ctx.head_wb_ena = 1;
2449         tx_ctx.head_wb_addr = ring->dma +
2450                               (ring->count * sizeof(struct i40e_tx_desc));
2451
2452         /* As part of VSI creation/update, FW allocates certain
2453          * Tx arbitration queue sets for each TC enabled for
2454          * the VSI. The FW returns the handles to these queue
2455          * sets as part of the response buffer to Add VSI,
2456          * Update VSI, etc. AQ commands. It is expected that
2457          * these queue set handles be associated with the Tx
2458          * queues by the driver as part of the TX queue context
2459          * initialization. This has to be done regardless of
2460          * DCB as by default everything is mapped to TC0.
2461          */
2462         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2463         tx_ctx.rdylist_act = 0;
2464
2465         /* clear the context in the HMC */
2466         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2467         if (err) {
2468                 dev_info(&vsi->back->pdev->dev,
2469                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2470                          ring->queue_index, pf_q, err);
2471                 return -ENOMEM;
2472         }
2473
2474         /* set the context in the HMC */
2475         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2476         if (err) {
2477                 dev_info(&vsi->back->pdev->dev,
2478                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2479                          ring->queue_index, pf_q, err);
2480                 return -ENOMEM;
2481         }
2482
2483         /* Now associate this queue with this PCI function */
2484         if (vsi->type == I40E_VSI_VMDQ2) {
2485                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2486                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2487                            I40E_QTX_CTL_VFVM_INDX_MASK;
2488         } else {
2489                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2490         }
2491
2492         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2493                     I40E_QTX_CTL_PF_INDX_MASK);
2494         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2495         i40e_flush(hw);
2496
2497         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2498
2499         /* cache tail off for easier writes later */
2500         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2501
2502         return 0;
2503 }
2504
2505 /**
2506  * i40e_configure_rx_ring - Configure a receive ring context
2507  * @ring: The Rx ring to configure
2508  *
2509  * Configure the Rx descriptor ring in the HMC context.
2510  **/
2511 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2512 {
2513         struct i40e_vsi *vsi = ring->vsi;
2514         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2515         u16 pf_q = vsi->base_queue + ring->queue_index;
2516         struct i40e_hw *hw = &vsi->back->hw;
2517         struct i40e_hmc_obj_rxq rx_ctx;
2518         i40e_status err = 0;
2519
2520         ring->state = 0;
2521
2522         /* clear the context structure first */
2523         memset(&rx_ctx, 0, sizeof(rx_ctx));
2524
2525         ring->rx_buf_len = vsi->rx_buf_len;
2526         ring->rx_hdr_len = vsi->rx_hdr_len;
2527
2528         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2529         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2530
2531         rx_ctx.base = (ring->dma / 128);
2532         rx_ctx.qlen = ring->count;
2533
2534         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2535                 set_ring_16byte_desc_enabled(ring);
2536                 rx_ctx.dsize = 0;
2537         } else {
2538                 rx_ctx.dsize = 1;
2539         }
2540
2541         rx_ctx.dtype = vsi->dtype;
2542         if (vsi->dtype) {
2543                 set_ring_ps_enabled(ring);
2544                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2545                                   I40E_RX_SPLIT_IP      |
2546                                   I40E_RX_SPLIT_TCP_UDP |
2547                                   I40E_RX_SPLIT_SCTP;
2548         } else {
2549                 rx_ctx.hsplit_0 = 0;
2550         }
2551
2552         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2553                                   (chain_len * ring->rx_buf_len));
2554         if (hw->revision_id == 0)
2555                 rx_ctx.lrxqthresh = 0;
2556         else
2557                 rx_ctx.lrxqthresh = 2;
2558         rx_ctx.crcstrip = 1;
2559         rx_ctx.l2tsel = 1;
2560         rx_ctx.showiv = 1;
2561 #ifdef I40E_FCOE
2562         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2563 #endif
2564         /* set the prefena field to 1 because the manual says to */
2565         rx_ctx.prefena = 1;
2566
2567         /* clear the context in the HMC */
2568         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2569         if (err) {
2570                 dev_info(&vsi->back->pdev->dev,
2571                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2572                          ring->queue_index, pf_q, err);
2573                 return -ENOMEM;
2574         }
2575
2576         /* set the context in the HMC */
2577         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2578         if (err) {
2579                 dev_info(&vsi->back->pdev->dev,
2580                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2581                          ring->queue_index, pf_q, err);
2582                 return -ENOMEM;
2583         }
2584
2585         /* cache tail for quicker writes, and clear the reg before use */
2586         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2587         writel(0, ring->tail);
2588
2589         if (ring_is_ps_enabled(ring)) {
2590                 i40e_alloc_rx_headers(ring);
2591                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2592         } else {
2593                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2594         }
2595
2596         return 0;
2597 }
2598
2599 /**
2600  * i40e_vsi_configure_tx - Configure the VSI for Tx
2601  * @vsi: VSI structure describing this set of rings and resources
2602  *
2603  * Configure the Tx VSI for operation.
2604  **/
2605 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2606 {
2607         int err = 0;
2608         u16 i;
2609
2610         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2611                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2612
2613         return err;
2614 }
2615
2616 /**
2617  * i40e_vsi_configure_rx - Configure the VSI for Rx
2618  * @vsi: the VSI being configured
2619  *
2620  * Configure the Rx VSI for operation.
2621  **/
2622 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2623 {
2624         int err = 0;
2625         u16 i;
2626
2627         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2628                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2629                                + ETH_FCS_LEN + VLAN_HLEN;
2630         else
2631                 vsi->max_frame = I40E_RXBUFFER_2048;
2632
2633         /* figure out correct receive buffer length */
2634         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2635                                     I40E_FLAG_RX_PS_ENABLED)) {
2636         case I40E_FLAG_RX_1BUF_ENABLED:
2637                 vsi->rx_hdr_len = 0;
2638                 vsi->rx_buf_len = vsi->max_frame;
2639                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2640                 break;
2641         case I40E_FLAG_RX_PS_ENABLED:
2642                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2643                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2644                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2645                 break;
2646         default:
2647                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2648                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2649                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2650                 break;
2651         }
2652
2653 #ifdef I40E_FCOE
2654         /* setup rx buffer for FCoE */
2655         if ((vsi->type == I40E_VSI_FCOE) &&
2656             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2657                 vsi->rx_hdr_len = 0;
2658                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2659                 vsi->max_frame = I40E_RXBUFFER_3072;
2660                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2661         }
2662
2663 #endif /* I40E_FCOE */
2664         /* round up for the chip's needs */
2665         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2666                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2667         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2668                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2669
2670         /* set up individual rings */
2671         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2672                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2673
2674         return err;
2675 }
2676
2677 /**
2678  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2679  * @vsi: ptr to the VSI
2680  **/
2681 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2682 {
2683         struct i40e_ring *tx_ring, *rx_ring;
2684         u16 qoffset, qcount;
2685         int i, n;
2686
2687         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2688                 return;
2689
2690         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2691                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2692                         continue;
2693
2694                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2695                 qcount = vsi->tc_config.tc_info[n].qcount;
2696                 for (i = qoffset; i < (qoffset + qcount); i++) {
2697                         rx_ring = vsi->rx_rings[i];
2698                         tx_ring = vsi->tx_rings[i];
2699                         rx_ring->dcb_tc = n;
2700                         tx_ring->dcb_tc = n;
2701                 }
2702         }
2703 }
2704
2705 /**
2706  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2707  * @vsi: ptr to the VSI
2708  **/
2709 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2710 {
2711         if (vsi->netdev)
2712                 i40e_set_rx_mode(vsi->netdev);
2713 }
2714
2715 /**
2716  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2717  * @vsi: Pointer to the targeted VSI
2718  *
2719  * This function replays the hlist on the hw where all the SB Flow Director
2720  * filters were saved.
2721  **/
2722 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2723 {
2724         struct i40e_fdir_filter *filter;
2725         struct i40e_pf *pf = vsi->back;
2726         struct hlist_node *node;
2727
2728         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2729                 return;
2730
2731         hlist_for_each_entry_safe(filter, node,
2732                                   &pf->fdir_filter_list, fdir_node) {
2733                 i40e_add_del_fdir(vsi, filter, true);
2734         }
2735 }
2736
2737 /**
2738  * i40e_vsi_configure - Set up the VSI for action
2739  * @vsi: the VSI being configured
2740  **/
2741 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2742 {
2743         int err;
2744
2745         i40e_set_vsi_rx_mode(vsi);
2746         i40e_restore_vlan(vsi);
2747         i40e_vsi_config_dcb_rings(vsi);
2748         err = i40e_vsi_configure_tx(vsi);
2749         if (!err)
2750                 err = i40e_vsi_configure_rx(vsi);
2751
2752         return err;
2753 }
2754
2755 /**
2756  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2757  * @vsi: the VSI being configured
2758  **/
2759 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2760 {
2761         struct i40e_pf *pf = vsi->back;
2762         struct i40e_q_vector *q_vector;
2763         struct i40e_hw *hw = &pf->hw;
2764         u16 vector;
2765         int i, q;
2766         u32 val;
2767         u32 qp;
2768
2769         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2770          * and PFINT_LNKLSTn registers, e.g.:
2771          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2772          */
2773         qp = vsi->base_queue;
2774         vector = vsi->base_vector;
2775         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2776                 q_vector = vsi->q_vectors[i];
2777                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2778                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2779                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2780                      q_vector->rx.itr);
2781                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2782                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2783                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2784                      q_vector->tx.itr);
2785
2786                 /* Linked list for the queuepairs assigned to this vector */
2787                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2788                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2789                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2790                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2791                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2792                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2793                               (I40E_QUEUE_TYPE_TX
2794                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2795
2796                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2797
2798                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2799                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2800                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2801                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2802                               (I40E_QUEUE_TYPE_RX
2803                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2804
2805                         /* Terminate the linked list */
2806                         if (q == (q_vector->num_ringpairs - 1))
2807                                 val |= (I40E_QUEUE_END_OF_LIST
2808                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2809
2810                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2811                         qp++;
2812                 }
2813         }
2814
2815         i40e_flush(hw);
2816 }
2817
2818 /**
2819  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2820  * @hw: ptr to the hardware info
2821  **/
2822 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2823 {
2824         struct i40e_hw *hw = &pf->hw;
2825         u32 val;
2826
2827         /* clear things first */
2828         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2829         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2830
2831         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2832               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2833               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2834               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2835               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2836               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2837               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2838               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2839
2840         if (pf->flags & I40E_FLAG_PTP)
2841                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2842
2843         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2844
2845         /* SW_ITR_IDX = 0, but don't change INTENA */
2846         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2847                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2848
2849         /* OTHER_ITR_IDX = 0 */
2850         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2851 }
2852
2853 /**
2854  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2855  * @vsi: the VSI being configured
2856  **/
2857 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2858 {
2859         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2860         struct i40e_pf *pf = vsi->back;
2861         struct i40e_hw *hw = &pf->hw;
2862         u32 val;
2863
2864         /* set the ITR configuration */
2865         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2866         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2867         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2868         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2869         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2870         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2871
2872         i40e_enable_misc_int_causes(pf);
2873
2874         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2875         wr32(hw, I40E_PFINT_LNKLST0, 0);
2876
2877         /* Associate the queue pair to the vector and enable the queue int */
2878         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2879               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2880               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2881
2882         wr32(hw, I40E_QINT_RQCTL(0), val);
2883
2884         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2885               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2886               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2887
2888         wr32(hw, I40E_QINT_TQCTL(0), val);
2889         i40e_flush(hw);
2890 }
2891
2892 /**
2893  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2894  * @pf: board private structure
2895  **/
2896 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2897 {
2898         struct i40e_hw *hw = &pf->hw;
2899
2900         wr32(hw, I40E_PFINT_DYN_CTL0,
2901              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2902         i40e_flush(hw);
2903 }
2904
2905 /**
2906  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2907  * @pf: board private structure
2908  **/
2909 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2910 {
2911         struct i40e_hw *hw = &pf->hw;
2912         u32 val;
2913
2914         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2915               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2916               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2917
2918         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2919         i40e_flush(hw);
2920 }
2921
2922 /**
2923  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2924  * @vsi: pointer to a vsi
2925  * @vector: enable a particular Hw Interrupt vector
2926  **/
2927 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2928 {
2929         struct i40e_pf *pf = vsi->back;
2930         struct i40e_hw *hw = &pf->hw;
2931         u32 val;
2932
2933         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2934               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2935               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2936         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2937         /* skip the flush */
2938 }
2939
2940 /**
2941  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
2942  * @vsi: pointer to a vsi
2943  * @vector: disable a particular Hw Interrupt vector
2944  **/
2945 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
2946 {
2947         struct i40e_pf *pf = vsi->back;
2948         struct i40e_hw *hw = &pf->hw;
2949         u32 val;
2950
2951         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
2952         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2953         i40e_flush(hw);
2954 }
2955
2956 /**
2957  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2958  * @irq: interrupt number
2959  * @data: pointer to a q_vector
2960  **/
2961 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2962 {
2963         struct i40e_q_vector *q_vector = data;
2964
2965         if (!q_vector->tx.ring && !q_vector->rx.ring)
2966                 return IRQ_HANDLED;
2967
2968         napi_schedule(&q_vector->napi);
2969
2970         return IRQ_HANDLED;
2971 }
2972
2973 /**
2974  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2975  * @vsi: the VSI being configured
2976  * @basename: name for the vector
2977  *
2978  * Allocates MSI-X vectors and requests interrupts from the kernel.
2979  **/
2980 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2981 {
2982         int q_vectors = vsi->num_q_vectors;
2983         struct i40e_pf *pf = vsi->back;
2984         int base = vsi->base_vector;
2985         int rx_int_idx = 0;
2986         int tx_int_idx = 0;
2987         int vector, err;
2988
2989         for (vector = 0; vector < q_vectors; vector++) {
2990                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2991
2992                 if (q_vector->tx.ring && q_vector->rx.ring) {
2993                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2994                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2995                         tx_int_idx++;
2996                 } else if (q_vector->rx.ring) {
2997                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2998                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
2999                 } else if (q_vector->tx.ring) {
3000                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3001                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3002                 } else {
3003                         /* skip this unused q_vector */
3004                         continue;
3005                 }
3006                 err = request_irq(pf->msix_entries[base + vector].vector,
3007                                   vsi->irq_handler,
3008                                   0,
3009                                   q_vector->name,
3010                                   q_vector);
3011                 if (err) {
3012                         dev_info(&pf->pdev->dev,
3013                                  "%s: request_irq failed, error: %d\n",
3014                                  __func__, err);
3015                         goto free_queue_irqs;
3016                 }
3017                 /* assign the mask for this irq */
3018                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3019                                       &q_vector->affinity_mask);
3020         }
3021
3022         vsi->irqs_ready = true;
3023         return 0;
3024
3025 free_queue_irqs:
3026         while (vector) {
3027                 vector--;
3028                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3029                                       NULL);
3030                 free_irq(pf->msix_entries[base + vector].vector,
3031                          &(vsi->q_vectors[vector]));
3032         }
3033         return err;
3034 }
3035
3036 /**
3037  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3038  * @vsi: the VSI being un-configured
3039  **/
3040 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3041 {
3042         struct i40e_pf *pf = vsi->back;
3043         struct i40e_hw *hw = &pf->hw;
3044         int base = vsi->base_vector;
3045         int i;
3046
3047         for (i = 0; i < vsi->num_queue_pairs; i++) {
3048                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3049                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3050         }
3051
3052         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3053                 for (i = vsi->base_vector;
3054                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3055                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3056
3057                 i40e_flush(hw);
3058                 for (i = 0; i < vsi->num_q_vectors; i++)
3059                         synchronize_irq(pf->msix_entries[i + base].vector);
3060         } else {
3061                 /* Legacy and MSI mode - this stops all interrupt handling */
3062                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3063                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3064                 i40e_flush(hw);
3065                 synchronize_irq(pf->pdev->irq);
3066         }
3067 }
3068
3069 /**
3070  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3071  * @vsi: the VSI being configured
3072  **/
3073 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3074 {
3075         struct i40e_pf *pf = vsi->back;
3076         int i;
3077
3078         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3079                 for (i = vsi->base_vector;
3080                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3081                         i40e_irq_dynamic_enable(vsi, i);
3082         } else {
3083                 i40e_irq_dynamic_enable_icr0(pf);
3084         }
3085
3086         i40e_flush(&pf->hw);
3087         return 0;
3088 }
3089
3090 /**
3091  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3092  * @pf: board private structure
3093  **/
3094 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3095 {
3096         /* Disable ICR 0 */
3097         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3098         i40e_flush(&pf->hw);
3099 }
3100
3101 /**
3102  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3103  * @irq: interrupt number
3104  * @data: pointer to a q_vector
3105  *
3106  * This is the handler used for all MSI/Legacy interrupts, and deals
3107  * with both queue and non-queue interrupts.  This is also used in
3108  * MSIX mode to handle the non-queue interrupts.
3109  **/
3110 static irqreturn_t i40e_intr(int irq, void *data)
3111 {
3112         struct i40e_pf *pf = (struct i40e_pf *)data;
3113         struct i40e_hw *hw = &pf->hw;
3114         irqreturn_t ret = IRQ_NONE;
3115         u32 icr0, icr0_remaining;
3116         u32 val, ena_mask;
3117
3118         icr0 = rd32(hw, I40E_PFINT_ICR0);
3119         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3120
3121         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3122         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3123                 goto enable_intr;
3124
3125         /* if interrupt but no bits showing, must be SWINT */
3126         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3127             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3128                 pf->sw_int_count++;
3129
3130         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3131         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3132
3133                 /* temporarily disable queue cause for NAPI processing */
3134                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3135                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3136                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3137
3138                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3139                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3140                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3141
3142                 if (!test_bit(__I40E_DOWN, &pf->state))
3143                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3144         }
3145
3146         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3147                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3148                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3149         }
3150
3151         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3152                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3153                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3154         }
3155
3156         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3157                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3158                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3159         }
3160
3161         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3162                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3163                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3164                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3165                 val = rd32(hw, I40E_GLGEN_RSTAT);
3166                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3167                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3168                 if (val == I40E_RESET_CORER) {
3169                         pf->corer_count++;
3170                 } else if (val == I40E_RESET_GLOBR) {
3171                         pf->globr_count++;
3172                 } else if (val == I40E_RESET_EMPR) {
3173                         pf->empr_count++;
3174                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3175                 }
3176         }
3177
3178         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3179                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3180                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3181         }
3182
3183         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3184                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3185
3186                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3187                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3188                         i40e_ptp_tx_hwtstamp(pf);
3189                 }
3190         }
3191
3192         /* If a critical error is pending we have no choice but to reset the
3193          * device.
3194          * Report and mask out any remaining unexpected interrupts.
3195          */
3196         icr0_remaining = icr0 & ena_mask;
3197         if (icr0_remaining) {
3198                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3199                          icr0_remaining);
3200                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3201                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3202                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3203                         dev_info(&pf->pdev->dev, "device will be reset\n");
3204                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3205                         i40e_service_event_schedule(pf);
3206                 }
3207                 ena_mask &= ~icr0_remaining;
3208         }
3209         ret = IRQ_HANDLED;
3210
3211 enable_intr:
3212         /* re-enable interrupt causes */
3213         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3214         if (!test_bit(__I40E_DOWN, &pf->state)) {
3215                 i40e_service_event_schedule(pf);
3216                 i40e_irq_dynamic_enable_icr0(pf);
3217         }
3218
3219         return ret;
3220 }
3221
3222 /**
3223  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3224  * @tx_ring:  tx ring to clean
3225  * @budget:   how many cleans we're allowed
3226  *
3227  * Returns true if there's any budget left (e.g. the clean is finished)
3228  **/
3229 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3230 {
3231         struct i40e_vsi *vsi = tx_ring->vsi;
3232         u16 i = tx_ring->next_to_clean;
3233         struct i40e_tx_buffer *tx_buf;
3234         struct i40e_tx_desc *tx_desc;
3235
3236         tx_buf = &tx_ring->tx_bi[i];
3237         tx_desc = I40E_TX_DESC(tx_ring, i);
3238         i -= tx_ring->count;
3239
3240         do {
3241                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3242
3243                 /* if next_to_watch is not set then there is no work pending */
3244                 if (!eop_desc)
3245                         break;
3246
3247                 /* prevent any other reads prior to eop_desc */
3248                 read_barrier_depends();
3249
3250                 /* if the descriptor isn't done, no work yet to do */
3251                 if (!(eop_desc->cmd_type_offset_bsz &
3252                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3253                         break;
3254
3255                 /* clear next_to_watch to prevent false hangs */
3256                 tx_buf->next_to_watch = NULL;
3257
3258                 tx_desc->buffer_addr = 0;
3259                 tx_desc->cmd_type_offset_bsz = 0;
3260                 /* move past filter desc */
3261                 tx_buf++;
3262                 tx_desc++;
3263                 i++;
3264                 if (unlikely(!i)) {
3265                         i -= tx_ring->count;
3266                         tx_buf = tx_ring->tx_bi;
3267                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3268                 }
3269                 /* unmap skb header data */
3270                 dma_unmap_single(tx_ring->dev,
3271                                  dma_unmap_addr(tx_buf, dma),
3272                                  dma_unmap_len(tx_buf, len),
3273                                  DMA_TO_DEVICE);
3274                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3275                         kfree(tx_buf->raw_buf);
3276
3277                 tx_buf->raw_buf = NULL;
3278                 tx_buf->tx_flags = 0;
3279                 tx_buf->next_to_watch = NULL;
3280                 dma_unmap_len_set(tx_buf, len, 0);
3281                 tx_desc->buffer_addr = 0;
3282                 tx_desc->cmd_type_offset_bsz = 0;
3283
3284                 /* move us past the eop_desc for start of next FD desc */
3285                 tx_buf++;
3286                 tx_desc++;
3287                 i++;
3288                 if (unlikely(!i)) {
3289                         i -= tx_ring->count;
3290                         tx_buf = tx_ring->tx_bi;
3291                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3292                 }
3293
3294                 /* update budget accounting */
3295                 budget--;
3296         } while (likely(budget));
3297
3298         i += tx_ring->count;
3299         tx_ring->next_to_clean = i;
3300
3301         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3302                 i40e_irq_dynamic_enable(vsi,
3303                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3304         }
3305         return budget > 0;
3306 }
3307
3308 /**
3309  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3310  * @irq: interrupt number
3311  * @data: pointer to a q_vector
3312  **/
3313 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3314 {
3315         struct i40e_q_vector *q_vector = data;
3316         struct i40e_vsi *vsi;
3317
3318         if (!q_vector->tx.ring)
3319                 return IRQ_HANDLED;
3320
3321         vsi = q_vector->tx.ring->vsi;
3322         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3323
3324         return IRQ_HANDLED;
3325 }
3326
3327 /**
3328  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3329  * @vsi: the VSI being configured
3330  * @v_idx: vector index
3331  * @qp_idx: queue pair index
3332  **/
3333 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3334 {
3335         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3336         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3337         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3338
3339         tx_ring->q_vector = q_vector;
3340         tx_ring->next = q_vector->tx.ring;
3341         q_vector->tx.ring = tx_ring;
3342         q_vector->tx.count++;
3343
3344         rx_ring->q_vector = q_vector;
3345         rx_ring->next = q_vector->rx.ring;
3346         q_vector->rx.ring = rx_ring;
3347         q_vector->rx.count++;
3348 }
3349
3350 /**
3351  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3352  * @vsi: the VSI being configured
3353  *
3354  * This function maps descriptor rings to the queue-specific vectors
3355  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3356  * one vector per queue pair, but on a constrained vector budget, we
3357  * group the queue pairs as "efficiently" as possible.
3358  **/
3359 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3360 {
3361         int qp_remaining = vsi->num_queue_pairs;
3362         int q_vectors = vsi->num_q_vectors;
3363         int num_ringpairs;
3364         int v_start = 0;
3365         int qp_idx = 0;
3366
3367         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3368          * group them so there are multiple queues per vector.
3369          * It is also important to go through all the vectors available to be
3370          * sure that if we don't use all the vectors, that the remaining vectors
3371          * are cleared. This is especially important when decreasing the
3372          * number of queues in use.
3373          */
3374         for (; v_start < q_vectors; v_start++) {
3375                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3376
3377                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3378
3379                 q_vector->num_ringpairs = num_ringpairs;
3380
3381                 q_vector->rx.count = 0;
3382                 q_vector->tx.count = 0;
3383                 q_vector->rx.ring = NULL;
3384                 q_vector->tx.ring = NULL;
3385
3386                 while (num_ringpairs--) {
3387                         map_vector_to_qp(vsi, v_start, qp_idx);
3388                         qp_idx++;
3389                         qp_remaining--;
3390                 }
3391         }
3392 }
3393
3394 /**
3395  * i40e_vsi_request_irq - Request IRQ from the OS
3396  * @vsi: the VSI being configured
3397  * @basename: name for the vector
3398  **/
3399 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3400 {
3401         struct i40e_pf *pf = vsi->back;
3402         int err;
3403
3404         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3405                 err = i40e_vsi_request_irq_msix(vsi, basename);
3406         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3407                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3408                                   pf->int_name, pf);
3409         else
3410                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3411                                   pf->int_name, pf);
3412
3413         if (err)
3414                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3415
3416         return err;
3417 }
3418
3419 #ifdef CONFIG_NET_POLL_CONTROLLER
3420 /**
3421  * i40e_netpoll - A Polling 'interrupt'handler
3422  * @netdev: network interface device structure
3423  *
3424  * This is used by netconsole to send skbs without having to re-enable
3425  * interrupts.  It's not called while the normal interrupt routine is executing.
3426  **/
3427 #ifdef I40E_FCOE
3428 void i40e_netpoll(struct net_device *netdev)
3429 #else
3430 static void i40e_netpoll(struct net_device *netdev)
3431 #endif
3432 {
3433         struct i40e_netdev_priv *np = netdev_priv(netdev);
3434         struct i40e_vsi *vsi = np->vsi;
3435         struct i40e_pf *pf = vsi->back;
3436         int i;
3437
3438         /* if interface is down do nothing */
3439         if (test_bit(__I40E_DOWN, &vsi->state))
3440                 return;
3441
3442         pf->flags |= I40E_FLAG_IN_NETPOLL;
3443         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3444                 for (i = 0; i < vsi->num_q_vectors; i++)
3445                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3446         } else {
3447                 i40e_intr(pf->pdev->irq, netdev);
3448         }
3449         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3450 }
3451 #endif
3452
3453 /**
3454  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3455  * @pf: the PF being configured
3456  * @pf_q: the PF queue
3457  * @enable: enable or disable state of the queue
3458  *
3459  * This routine will wait for the given Tx queue of the PF to reach the
3460  * enabled or disabled state.
3461  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3462  * multiple retries; else will return 0 in case of success.
3463  **/
3464 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3465 {
3466         int i;
3467         u32 tx_reg;
3468
3469         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3470                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3471                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3472                         break;
3473
3474                 usleep_range(10, 20);
3475         }
3476         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3477                 return -ETIMEDOUT;
3478
3479         return 0;
3480 }
3481
3482 /**
3483  * i40e_vsi_control_tx - Start or stop a VSI's rings
3484  * @vsi: the VSI being configured
3485  * @enable: start or stop the rings
3486  **/
3487 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3488 {
3489         struct i40e_pf *pf = vsi->back;
3490         struct i40e_hw *hw = &pf->hw;
3491         int i, j, pf_q, ret = 0;
3492         u32 tx_reg;
3493
3494         pf_q = vsi->base_queue;
3495         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3496
3497                 /* warn the TX unit of coming changes */
3498                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3499                 if (!enable)
3500                         usleep_range(10, 20);
3501
3502                 for (j = 0; j < 50; j++) {
3503                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3504                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3505                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3506                                 break;
3507                         usleep_range(1000, 2000);
3508                 }
3509                 /* Skip if the queue is already in the requested state */
3510                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3511                         continue;
3512
3513                 /* turn on/off the queue */
3514                 if (enable) {
3515                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3516                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3517                 } else {
3518                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3519                 }
3520
3521                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3522                 /* No waiting for the Tx queue to disable */
3523                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3524                         continue;
3525
3526                 /* wait for the change to finish */
3527                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3528                 if (ret) {
3529                         dev_info(&pf->pdev->dev,
3530                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3531                                  __func__, vsi->seid, pf_q,
3532                                  (enable ? "en" : "dis"));
3533                         break;
3534                 }
3535         }
3536
3537         if (hw->revision_id == 0)
3538                 mdelay(50);
3539         return ret;
3540 }
3541
3542 /**
3543  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3544  * @pf: the PF being configured
3545  * @pf_q: the PF queue
3546  * @enable: enable or disable state of the queue
3547  *
3548  * This routine will wait for the given Rx queue of the PF to reach the
3549  * enabled or disabled state.
3550  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3551  * multiple retries; else will return 0 in case of success.
3552  **/
3553 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3554 {
3555         int i;
3556         u32 rx_reg;
3557
3558         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3559                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3560                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3561                         break;
3562
3563                 usleep_range(10, 20);
3564         }
3565         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3566                 return -ETIMEDOUT;
3567
3568         return 0;
3569 }
3570
3571 /**
3572  * i40e_vsi_control_rx - Start or stop a VSI's rings
3573  * @vsi: the VSI being configured
3574  * @enable: start or stop the rings
3575  **/
3576 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3577 {
3578         struct i40e_pf *pf = vsi->back;
3579         struct i40e_hw *hw = &pf->hw;
3580         int i, j, pf_q, ret = 0;
3581         u32 rx_reg;
3582
3583         pf_q = vsi->base_queue;
3584         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3585                 for (j = 0; j < 50; j++) {
3586                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3587                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3588                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3589                                 break;
3590                         usleep_range(1000, 2000);
3591                 }
3592
3593                 /* Skip if the queue is already in the requested state */
3594                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3595                         continue;
3596
3597                 /* turn on/off the queue */
3598                 if (enable)
3599                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3600                 else
3601                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3602                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3603
3604                 /* wait for the change to finish */
3605                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3606                 if (ret) {
3607                         dev_info(&pf->pdev->dev,
3608                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3609                                  __func__, vsi->seid, pf_q,
3610                                  (enable ? "en" : "dis"));
3611                         break;
3612                 }
3613         }
3614
3615         return ret;
3616 }
3617
3618 /**
3619  * i40e_vsi_control_rings - Start or stop a VSI's rings
3620  * @vsi: the VSI being configured
3621  * @enable: start or stop the rings
3622  **/
3623 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3624 {
3625         int ret = 0;
3626
3627         /* do rx first for enable and last for disable */
3628         if (request) {
3629                 ret = i40e_vsi_control_rx(vsi, request);
3630                 if (ret)
3631                         return ret;
3632                 ret = i40e_vsi_control_tx(vsi, request);
3633         } else {
3634                 /* Ignore return value, we need to shutdown whatever we can */
3635                 i40e_vsi_control_tx(vsi, request);
3636                 i40e_vsi_control_rx(vsi, request);
3637         }
3638
3639         return ret;
3640 }
3641
3642 /**
3643  * i40e_vsi_free_irq - Free the irq association with the OS
3644  * @vsi: the VSI being configured
3645  **/
3646 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3647 {
3648         struct i40e_pf *pf = vsi->back;
3649         struct i40e_hw *hw = &pf->hw;
3650         int base = vsi->base_vector;
3651         u32 val, qp;
3652         int i;
3653
3654         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3655                 if (!vsi->q_vectors)
3656                         return;
3657
3658                 if (!vsi->irqs_ready)
3659                         return;
3660
3661                 vsi->irqs_ready = false;
3662                 for (i = 0; i < vsi->num_q_vectors; i++) {
3663                         u16 vector = i + base;
3664
3665                         /* free only the irqs that were actually requested */
3666                         if (!vsi->q_vectors[i] ||
3667                             !vsi->q_vectors[i]->num_ringpairs)
3668                                 continue;
3669
3670                         /* clear the affinity_mask in the IRQ descriptor */
3671                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3672                                               NULL);
3673                         free_irq(pf->msix_entries[vector].vector,
3674                                  vsi->q_vectors[i]);
3675
3676                         /* Tear down the interrupt queue link list
3677                          *
3678                          * We know that they come in pairs and always
3679                          * the Rx first, then the Tx.  To clear the
3680                          * link list, stick the EOL value into the
3681                          * next_q field of the registers.
3682                          */
3683                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3684                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3685                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3686                         val |= I40E_QUEUE_END_OF_LIST
3687                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3688                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3689
3690                         while (qp != I40E_QUEUE_END_OF_LIST) {
3691                                 u32 next;
3692
3693                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3694
3695                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3696                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3697                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3698                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3699
3700                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3701                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3702
3703                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3704
3705                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3706
3707                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3708                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3709
3710                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3711                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3712                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3713                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3714
3715                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3716                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3717
3718                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3719                                 qp = next;
3720                         }
3721                 }
3722         } else {
3723                 free_irq(pf->pdev->irq, pf);
3724
3725                 val = rd32(hw, I40E_PFINT_LNKLST0);
3726                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3727                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3728                 val |= I40E_QUEUE_END_OF_LIST
3729                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3730                 wr32(hw, I40E_PFINT_LNKLST0, val);
3731
3732                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3733                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3734                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3735                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3736                          I40E_QINT_RQCTL_INTEVENT_MASK);
3737
3738                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3739                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3740
3741                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3742
3743                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3744
3745                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3746                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3747                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3748                          I40E_QINT_TQCTL_INTEVENT_MASK);
3749
3750                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3751                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3752
3753                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3754         }
3755 }
3756
3757 /**
3758  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3759  * @vsi: the VSI being configured
3760  * @v_idx: Index of vector to be freed
3761  *
3762  * This function frees the memory allocated to the q_vector.  In addition if
3763  * NAPI is enabled it will delete any references to the NAPI struct prior
3764  * to freeing the q_vector.
3765  **/
3766 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3767 {
3768         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3769         struct i40e_ring *ring;
3770
3771         if (!q_vector)
3772                 return;
3773
3774         /* disassociate q_vector from rings */
3775         i40e_for_each_ring(ring, q_vector->tx)
3776                 ring->q_vector = NULL;
3777
3778         i40e_for_each_ring(ring, q_vector->rx)
3779                 ring->q_vector = NULL;
3780
3781         /* only VSI w/ an associated netdev is set up w/ NAPI */
3782         if (vsi->netdev)
3783                 netif_napi_del(&q_vector->napi);
3784
3785         vsi->q_vectors[v_idx] = NULL;
3786
3787         kfree_rcu(q_vector, rcu);
3788 }
3789
3790 /**
3791  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3792  * @vsi: the VSI being un-configured
3793  *
3794  * This frees the memory allocated to the q_vectors and
3795  * deletes references to the NAPI struct.
3796  **/
3797 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3798 {
3799         int v_idx;
3800
3801         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3802                 i40e_free_q_vector(vsi, v_idx);
3803 }
3804
3805 /**
3806  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3807  * @pf: board private structure
3808  **/
3809 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3810 {
3811         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3812         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3813                 pci_disable_msix(pf->pdev);
3814                 kfree(pf->msix_entries);
3815                 pf->msix_entries = NULL;
3816         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3817                 pci_disable_msi(pf->pdev);
3818         }
3819         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3820 }
3821
3822 /**
3823  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3824  * @pf: board private structure
3825  *
3826  * We go through and clear interrupt specific resources and reset the structure
3827  * to pre-load conditions
3828  **/
3829 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3830 {
3831         int i;
3832
3833         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3834         for (i = 0; i < pf->num_alloc_vsi; i++)
3835                 if (pf->vsi[i])
3836                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3837         i40e_reset_interrupt_capability(pf);
3838 }
3839
3840 /**
3841  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3842  * @vsi: the VSI being configured
3843  **/
3844 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3845 {
3846         int q_idx;
3847
3848         if (!vsi->netdev)
3849                 return;
3850
3851         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3852                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3853 }
3854
3855 /**
3856  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3857  * @vsi: the VSI being configured
3858  **/
3859 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3860 {
3861         int q_idx;
3862
3863         if (!vsi->netdev)
3864                 return;
3865
3866         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3867                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3868 }
3869
3870 /**
3871  * i40e_vsi_close - Shut down a VSI
3872  * @vsi: the vsi to be quelled
3873  **/
3874 static void i40e_vsi_close(struct i40e_vsi *vsi)
3875 {
3876         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3877                 i40e_down(vsi);
3878         i40e_vsi_free_irq(vsi);
3879         i40e_vsi_free_tx_resources(vsi);
3880         i40e_vsi_free_rx_resources(vsi);
3881 }
3882
3883 /**
3884  * i40e_quiesce_vsi - Pause a given VSI
3885  * @vsi: the VSI being paused
3886  **/
3887 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3888 {
3889         if (test_bit(__I40E_DOWN, &vsi->state))
3890                 return;
3891
3892         /* No need to disable FCoE VSI when Tx suspended */
3893         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
3894             vsi->type == I40E_VSI_FCOE) {
3895                 dev_dbg(&vsi->back->pdev->dev,
3896                         "%s: VSI seid %d skipping FCoE VSI disable\n",
3897                          __func__, vsi->seid);
3898                 return;
3899         }
3900
3901         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3902         if (vsi->netdev && netif_running(vsi->netdev)) {
3903                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3904         } else {
3905                 i40e_vsi_close(vsi);
3906         }
3907 }
3908
3909 /**
3910  * i40e_unquiesce_vsi - Resume a given VSI
3911  * @vsi: the VSI being resumed
3912  **/
3913 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3914 {
3915         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3916                 return;
3917
3918         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3919         if (vsi->netdev && netif_running(vsi->netdev))
3920                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3921         else
3922                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
3923 }
3924
3925 /**
3926  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3927  * @pf: the PF
3928  **/
3929 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3930 {
3931         int v;
3932
3933         for (v = 0; v < pf->num_alloc_vsi; v++) {
3934                 if (pf->vsi[v])
3935                         i40e_quiesce_vsi(pf->vsi[v]);
3936         }
3937 }
3938
3939 /**
3940  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3941  * @pf: the PF
3942  **/
3943 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3944 {
3945         int v;
3946
3947         for (v = 0; v < pf->num_alloc_vsi; v++) {
3948                 if (pf->vsi[v])
3949                         i40e_unquiesce_vsi(pf->vsi[v]);
3950         }
3951 }
3952
3953 #ifdef CONFIG_I40E_DCB
3954 /**
3955  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
3956  * @vsi: the VSI being configured
3957  *
3958  * This function waits for the given VSI's Tx queues to be disabled.
3959  **/
3960 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
3961 {
3962         struct i40e_pf *pf = vsi->back;
3963         int i, pf_q, ret;
3964
3965         pf_q = vsi->base_queue;
3966         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3967                 /* Check and wait for the disable status of the queue */
3968                 ret = i40e_pf_txq_wait(pf, pf_q, false);
3969                 if (ret) {
3970                         dev_info(&pf->pdev->dev,
3971                                  "%s: VSI seid %d Tx ring %d disable timeout\n",
3972                                  __func__, vsi->seid, pf_q);
3973                         return ret;
3974                 }
3975         }
3976
3977         return 0;
3978 }
3979
3980 /**
3981  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
3982  * @pf: the PF
3983  *
3984  * This function waits for the Tx queues to be in disabled state for all the
3985  * VSIs that are managed by this PF.
3986  **/
3987 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
3988 {
3989         int v, ret = 0;
3990
3991         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3992                 /* No need to wait for FCoE VSI queues */
3993                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
3994                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
3995                         if (ret)
3996                                 break;
3997                 }
3998         }
3999
4000         return ret;
4001 }
4002
4003 #endif
4004 /**
4005  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4006  * @pf: pointer to pf
4007  *
4008  * Get TC map for ISCSI PF type that will include iSCSI TC
4009  * and LAN TC.
4010  **/
4011 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4012 {
4013         struct i40e_dcb_app_priority_table app;
4014         struct i40e_hw *hw = &pf->hw;
4015         u8 enabled_tc = 1; /* TC0 is always enabled */
4016         u8 tc, i;
4017         /* Get the iSCSI APP TLV */
4018         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4019
4020         for (i = 0; i < dcbcfg->numapps; i++) {
4021                 app = dcbcfg->app[i];
4022                 if (app.selector == I40E_APP_SEL_TCPIP &&
4023                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4024                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4025                         enabled_tc |= (1 << tc);
4026                         break;
4027                 }
4028         }
4029
4030         return enabled_tc;
4031 }
4032
4033 /**
4034  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4035  * @dcbcfg: the corresponding DCBx configuration structure
4036  *
4037  * Return the number of TCs from given DCBx configuration
4038  **/
4039 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4040 {
4041         u8 num_tc = 0;
4042         int i;
4043
4044         /* Scan the ETS Config Priority Table to find
4045          * traffic class enabled for a given priority
4046          * and use the traffic class index to get the
4047          * number of traffic classes enabled
4048          */
4049         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4050                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4051                         num_tc = dcbcfg->etscfg.prioritytable[i];
4052         }
4053
4054         /* Traffic class index starts from zero so
4055          * increment to return the actual count
4056          */
4057         return num_tc + 1;
4058 }
4059
4060 /**
4061  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4062  * @dcbcfg: the corresponding DCBx configuration structure
4063  *
4064  * Query the current DCB configuration and return the number of
4065  * traffic classes enabled from the given DCBX config
4066  **/
4067 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4068 {
4069         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4070         u8 enabled_tc = 1;
4071         u8 i;
4072
4073         for (i = 0; i < num_tc; i++)
4074                 enabled_tc |= 1 << i;
4075
4076         return enabled_tc;
4077 }
4078
4079 /**
4080  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4081  * @pf: PF being queried
4082  *
4083  * Return number of traffic classes enabled for the given PF
4084  **/
4085 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4086 {
4087         struct i40e_hw *hw = &pf->hw;
4088         u8 i, enabled_tc;
4089         u8 num_tc = 0;
4090         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4091
4092         /* If DCB is not enabled then always in single TC */
4093         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4094                 return 1;
4095
4096         /* SFP mode will be enabled for all TCs on port */
4097         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4098                 return i40e_dcb_get_num_tc(dcbcfg);
4099
4100         /* MFP mode return count of enabled TCs for this PF */
4101         if (pf->hw.func_caps.iscsi)
4102                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4103         else
4104                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4105
4106         /* At least have TC0 */
4107         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4108         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4109                 if (enabled_tc & (1 << i))
4110                         num_tc++;
4111         }
4112         return num_tc;
4113 }
4114
4115 /**
4116  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4117  * @pf: PF being queried
4118  *
4119  * Return a bitmap for first enabled traffic class for this PF.
4120  **/
4121 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4122 {
4123         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4124         u8 i = 0;
4125
4126         if (!enabled_tc)
4127                 return 0x1; /* TC0 */
4128
4129         /* Find the first enabled TC */
4130         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4131                 if (enabled_tc & (1 << i))
4132                         break;
4133         }
4134
4135         return 1 << i;
4136 }
4137
4138 /**
4139  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4140  * @pf: PF being queried
4141  *
4142  * Return a bitmap for enabled traffic classes for this PF.
4143  **/
4144 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4145 {
4146         /* If DCB is not enabled for this PF then just return default TC */
4147         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4148                 return i40e_pf_get_default_tc(pf);
4149
4150         /* SFP mode we want PF to be enabled for all TCs */
4151         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4152                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4153
4154         /* MPF enabled and iSCSI PF type */
4155         if (pf->hw.func_caps.iscsi)
4156                 return i40e_get_iscsi_tc_map(pf);
4157         else
4158                 return pf->hw.func_caps.enabled_tcmap;
4159 }
4160
4161 /**
4162  * i40e_vsi_get_bw_info - Query VSI BW Information
4163  * @vsi: the VSI being queried
4164  *
4165  * Returns 0 on success, negative value on failure
4166  **/
4167 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4168 {
4169         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4170         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4171         struct i40e_pf *pf = vsi->back;
4172         struct i40e_hw *hw = &pf->hw;
4173         i40e_status aq_ret;
4174         u32 tc_bw_max;
4175         int i;
4176
4177         /* Get the VSI level BW configuration */
4178         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4179         if (aq_ret) {
4180                 dev_info(&pf->pdev->dev,
4181                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
4182                          aq_ret, pf->hw.aq.asq_last_status);
4183                 return -EINVAL;
4184         }
4185
4186         /* Get the VSI level BW configuration per TC */
4187         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4188                                                   NULL);
4189         if (aq_ret) {
4190                 dev_info(&pf->pdev->dev,
4191                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
4192                          aq_ret, pf->hw.aq.asq_last_status);
4193                 return -EINVAL;
4194         }
4195
4196         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4197                 dev_info(&pf->pdev->dev,
4198                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4199                          bw_config.tc_valid_bits,
4200                          bw_ets_config.tc_valid_bits);
4201                 /* Still continuing */
4202         }
4203
4204         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4205         vsi->bw_max_quanta = bw_config.max_bw;
4206         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4207                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4208         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4209                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4210                 vsi->bw_ets_limit_credits[i] =
4211                                         le16_to_cpu(bw_ets_config.credits[i]);
4212                 /* 3 bits out of 4 for each TC */
4213                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4214         }
4215
4216         return 0;
4217 }
4218
4219 /**
4220  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4221  * @vsi: the VSI being configured
4222  * @enabled_tc: TC bitmap
4223  * @bw_credits: BW shared credits per TC
4224  *
4225  * Returns 0 on success, negative value on failure
4226  **/
4227 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4228                                        u8 *bw_share)
4229 {
4230         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4231         i40e_status aq_ret;
4232         int i;
4233
4234         bw_data.tc_valid_bits = enabled_tc;
4235         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4236                 bw_data.tc_bw_credits[i] = bw_share[i];
4237
4238         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4239                                           NULL);
4240         if (aq_ret) {
4241                 dev_info(&vsi->back->pdev->dev,
4242                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4243                          vsi->back->hw.aq.asq_last_status);
4244                 return -EINVAL;
4245         }
4246
4247         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4248                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4249
4250         return 0;
4251 }
4252
4253 /**
4254  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4255  * @vsi: the VSI being configured
4256  * @enabled_tc: TC map to be enabled
4257  *
4258  **/
4259 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4260 {
4261         struct net_device *netdev = vsi->netdev;
4262         struct i40e_pf *pf = vsi->back;
4263         struct i40e_hw *hw = &pf->hw;
4264         u8 netdev_tc = 0;
4265         int i;
4266         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4267
4268         if (!netdev)
4269                 return;
4270
4271         if (!enabled_tc) {
4272                 netdev_reset_tc(netdev);
4273                 return;
4274         }
4275
4276         /* Set up actual enabled TCs on the VSI */
4277         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4278                 return;
4279
4280         /* set per TC queues for the VSI */
4281         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4282                 /* Only set TC queues for enabled tcs
4283                  *
4284                  * e.g. For a VSI that has TC0 and TC3 enabled the
4285                  * enabled_tc bitmap would be 0x00001001; the driver
4286                  * will set the numtc for netdev as 2 that will be
4287                  * referenced by the netdev layer as TC 0 and 1.
4288                  */
4289                 if (vsi->tc_config.enabled_tc & (1 << i))
4290                         netdev_set_tc_queue(netdev,
4291                                         vsi->tc_config.tc_info[i].netdev_tc,
4292                                         vsi->tc_config.tc_info[i].qcount,
4293                                         vsi->tc_config.tc_info[i].qoffset);
4294         }
4295
4296         /* Assign UP2TC map for the VSI */
4297         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4298                 /* Get the actual TC# for the UP */
4299                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4300                 /* Get the mapped netdev TC# for the UP */
4301                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4302                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4303         }
4304 }
4305
4306 /**
4307  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4308  * @vsi: the VSI being configured
4309  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4310  **/
4311 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4312                                       struct i40e_vsi_context *ctxt)
4313 {
4314         /* copy just the sections touched not the entire info
4315          * since not all sections are valid as returned by
4316          * update vsi params
4317          */
4318         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4319         memcpy(&vsi->info.queue_mapping,
4320                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4321         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4322                sizeof(vsi->info.tc_mapping));
4323 }
4324
4325 /**
4326  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4327  * @vsi: VSI to be configured
4328  * @enabled_tc: TC bitmap
4329  *
4330  * This configures a particular VSI for TCs that are mapped to the
4331  * given TC bitmap. It uses default bandwidth share for TCs across
4332  * VSIs to configure TC for a particular VSI.
4333  *
4334  * NOTE:
4335  * It is expected that the VSI queues have been quisced before calling
4336  * this function.
4337  **/
4338 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4339 {
4340         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4341         struct i40e_vsi_context ctxt;
4342         int ret = 0;
4343         int i;
4344
4345         /* Check if enabled_tc is same as existing or new TCs */
4346         if (vsi->tc_config.enabled_tc == enabled_tc)
4347                 return ret;
4348
4349         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4350         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4351                 if (enabled_tc & (1 << i))
4352                         bw_share[i] = 1;
4353         }
4354
4355         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4356         if (ret) {
4357                 dev_info(&vsi->back->pdev->dev,
4358                          "Failed configuring TC map %d for VSI %d\n",
4359                          enabled_tc, vsi->seid);
4360                 goto out;
4361         }
4362
4363         /* Update Queue Pairs Mapping for currently enabled UPs */
4364         ctxt.seid = vsi->seid;
4365         ctxt.pf_num = vsi->back->hw.pf_id;
4366         ctxt.vf_num = 0;
4367         ctxt.uplink_seid = vsi->uplink_seid;
4368         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
4369         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4370
4371         /* Update the VSI after updating the VSI queue-mapping information */
4372         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4373         if (ret) {
4374                 dev_info(&vsi->back->pdev->dev,
4375                          "update vsi failed, aq_err=%d\n",
4376                          vsi->back->hw.aq.asq_last_status);
4377                 goto out;
4378         }
4379         /* update the local VSI info with updated queue map */
4380         i40e_vsi_update_queue_map(vsi, &ctxt);
4381         vsi->info.valid_sections = 0;
4382
4383         /* Update current VSI BW information */
4384         ret = i40e_vsi_get_bw_info(vsi);
4385         if (ret) {
4386                 dev_info(&vsi->back->pdev->dev,
4387                          "Failed updating vsi bw info, aq_err=%d\n",
4388                          vsi->back->hw.aq.asq_last_status);
4389                 goto out;
4390         }
4391
4392         /* Update the netdev TC setup */
4393         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4394 out:
4395         return ret;
4396 }
4397
4398 /**
4399  * i40e_veb_config_tc - Configure TCs for given VEB
4400  * @veb: given VEB
4401  * @enabled_tc: TC bitmap
4402  *
4403  * Configures given TC bitmap for VEB (switching) element
4404  **/
4405 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4406 {
4407         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4408         struct i40e_pf *pf = veb->pf;
4409         int ret = 0;
4410         int i;
4411
4412         /* No TCs or already enabled TCs just return */
4413         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4414                 return ret;
4415
4416         bw_data.tc_valid_bits = enabled_tc;
4417         /* bw_data.absolute_credits is not set (relative) */
4418
4419         /* Enable ETS TCs with equal BW Share for now */
4420         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4421                 if (enabled_tc & (1 << i))
4422                         bw_data.tc_bw_share_credits[i] = 1;
4423         }
4424
4425         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4426                                                    &bw_data, NULL);
4427         if (ret) {
4428                 dev_info(&pf->pdev->dev,
4429                          "veb bw config failed, aq_err=%d\n",
4430                          pf->hw.aq.asq_last_status);
4431                 goto out;
4432         }
4433
4434         /* Update the BW information */
4435         ret = i40e_veb_get_bw_info(veb);
4436         if (ret) {
4437                 dev_info(&pf->pdev->dev,
4438                          "Failed getting veb bw config, aq_err=%d\n",
4439                          pf->hw.aq.asq_last_status);
4440         }
4441
4442 out:
4443         return ret;
4444 }
4445
4446 #ifdef CONFIG_I40E_DCB
4447 /**
4448  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4449  * @pf: PF struct
4450  *
4451  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4452  * the caller would've quiesce all the VSIs before calling
4453  * this function
4454  **/
4455 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4456 {
4457         u8 tc_map = 0;
4458         int ret;
4459         u8 v;
4460
4461         /* Enable the TCs available on PF to all VEBs */
4462         tc_map = i40e_pf_get_tc_map(pf);
4463         for (v = 0; v < I40E_MAX_VEB; v++) {
4464                 if (!pf->veb[v])
4465                         continue;
4466                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4467                 if (ret) {
4468                         dev_info(&pf->pdev->dev,
4469                                  "Failed configuring TC for VEB seid=%d\n",
4470                                  pf->veb[v]->seid);
4471                         /* Will try to configure as many components */
4472                 }
4473         }
4474
4475         /* Update each VSI */
4476         for (v = 0; v < pf->num_alloc_vsi; v++) {
4477                 if (!pf->vsi[v])
4478                         continue;
4479
4480                 /* - Enable all TCs for the LAN VSI
4481 #ifdef I40E_FCOE
4482                  * - For FCoE VSI only enable the TC configured
4483                  *   as per the APP TLV
4484 #endif
4485                  * - For all others keep them at TC0 for now
4486                  */
4487                 if (v == pf->lan_vsi)
4488                         tc_map = i40e_pf_get_tc_map(pf);
4489                 else
4490                         tc_map = i40e_pf_get_default_tc(pf);
4491 #ifdef I40E_FCOE
4492                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4493                         tc_map = i40e_get_fcoe_tc_map(pf);
4494 #endif /* #ifdef I40E_FCOE */
4495
4496                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4497                 if (ret) {
4498                         dev_info(&pf->pdev->dev,
4499                                  "Failed configuring TC for VSI seid=%d\n",
4500                                  pf->vsi[v]->seid);
4501                         /* Will try to configure as many components */
4502                 } else {
4503                         /* Re-configure VSI vectors based on updated TC map */
4504                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4505                         if (pf->vsi[v]->netdev)
4506                                 i40e_dcbnl_set_all(pf->vsi[v]);
4507                 }
4508         }
4509 }
4510
4511 /**
4512  * i40e_resume_port_tx - Resume port Tx
4513  * @pf: PF struct
4514  *
4515  * Resume a port's Tx and issue a PF reset in case of failure to
4516  * resume.
4517  **/
4518 static int i40e_resume_port_tx(struct i40e_pf *pf)
4519 {
4520         struct i40e_hw *hw = &pf->hw;
4521         int ret;
4522
4523         ret = i40e_aq_resume_port_tx(hw, NULL);
4524         if (ret) {
4525                 dev_info(&pf->pdev->dev,
4526                          "AQ command Resume Port Tx failed = %d\n",
4527                           pf->hw.aq.asq_last_status);
4528                 /* Schedule PF reset to recover */
4529                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4530                 i40e_service_event_schedule(pf);
4531         }
4532
4533         return ret;
4534 }
4535
4536 /**
4537  * i40e_init_pf_dcb - Initialize DCB configuration
4538  * @pf: PF being configured
4539  *
4540  * Query the current DCB configuration and cache it
4541  * in the hardware structure
4542  **/
4543 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4544 {
4545         struct i40e_hw *hw = &pf->hw;
4546         int err = 0;
4547
4548         /* Get the initial DCB configuration */
4549         err = i40e_init_dcb(hw);
4550         if (!err) {
4551                 /* Device/Function is not DCBX capable */
4552                 if ((!hw->func_caps.dcb) ||
4553                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4554                         dev_info(&pf->pdev->dev,
4555                                  "DCBX offload is not supported or is disabled for this PF.\n");
4556
4557                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4558                                 goto out;
4559
4560                 } else {
4561                         /* When status is not DISABLED then DCBX in FW */
4562                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4563                                        DCB_CAP_DCBX_VER_IEEE;
4564
4565                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4566                         /* Enable DCB tagging only when more than one TC */
4567                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4568                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4569                         dev_dbg(&pf->pdev->dev,
4570                                 "DCBX offload is supported for this PF.\n");
4571                 }
4572         } else {
4573                 dev_info(&pf->pdev->dev,
4574                          "AQ Querying DCB configuration failed: aq_err %d\n",
4575                          pf->hw.aq.asq_last_status);
4576         }
4577
4578 out:
4579         return err;
4580 }
4581 #endif /* CONFIG_I40E_DCB */
4582 #define SPEED_SIZE 14
4583 #define FC_SIZE 8
4584 /**
4585  * i40e_print_link_message - print link up or down
4586  * @vsi: the VSI for which link needs a message
4587  */
4588 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4589 {
4590         char speed[SPEED_SIZE] = "Unknown";
4591         char fc[FC_SIZE] = "RX/TX";
4592
4593         if (!isup) {
4594                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4595                 return;
4596         }
4597
4598         /* Warn user if link speed on NPAR enabled partition is not at
4599          * least 10GB
4600          */
4601         if (vsi->back->hw.func_caps.npar_enable &&
4602             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4603              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4604                 netdev_warn(vsi->netdev,
4605                             "The partition detected link speed that is less than 10Gbps\n");
4606
4607         switch (vsi->back->hw.phy.link_info.link_speed) {
4608         case I40E_LINK_SPEED_40GB:
4609                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4610                 break;
4611         case I40E_LINK_SPEED_10GB:
4612                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4613                 break;
4614         case I40E_LINK_SPEED_1GB:
4615                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4616                 break;
4617         case I40E_LINK_SPEED_100MB:
4618                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4619                 break;
4620         default:
4621                 break;
4622         }
4623
4624         switch (vsi->back->hw.fc.current_mode) {
4625         case I40E_FC_FULL:
4626                 strlcpy(fc, "RX/TX", FC_SIZE);
4627                 break;
4628         case I40E_FC_TX_PAUSE:
4629                 strlcpy(fc, "TX", FC_SIZE);
4630                 break;
4631         case I40E_FC_RX_PAUSE:
4632                 strlcpy(fc, "RX", FC_SIZE);
4633                 break;
4634         default:
4635                 strlcpy(fc, "None", FC_SIZE);
4636                 break;
4637         }
4638
4639         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4640                     speed, fc);
4641 }
4642
4643 /**
4644  * i40e_up_complete - Finish the last steps of bringing up a connection
4645  * @vsi: the VSI being configured
4646  **/
4647 static int i40e_up_complete(struct i40e_vsi *vsi)
4648 {
4649         struct i40e_pf *pf = vsi->back;
4650         int err;
4651
4652         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4653                 i40e_vsi_configure_msix(vsi);
4654         else
4655                 i40e_configure_msi_and_legacy(vsi);
4656
4657         /* start rings */
4658         err = i40e_vsi_control_rings(vsi, true);
4659         if (err)
4660                 return err;
4661
4662         clear_bit(__I40E_DOWN, &vsi->state);
4663         i40e_napi_enable_all(vsi);
4664         i40e_vsi_enable_irq(vsi);
4665
4666         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4667             (vsi->netdev)) {
4668                 i40e_print_link_message(vsi, true);
4669                 netif_tx_start_all_queues(vsi->netdev);
4670                 netif_carrier_on(vsi->netdev);
4671         } else if (vsi->netdev) {
4672                 i40e_print_link_message(vsi, false);
4673                 /* need to check for qualified module here*/
4674                 if ((pf->hw.phy.link_info.link_info &
4675                         I40E_AQ_MEDIA_AVAILABLE) &&
4676                     (!(pf->hw.phy.link_info.an_info &
4677                         I40E_AQ_QUALIFIED_MODULE)))
4678                         netdev_err(vsi->netdev,
4679                                    "the driver failed to link because an unqualified module was detected.");
4680         }
4681
4682         /* replay FDIR SB filters */
4683         if (vsi->type == I40E_VSI_FDIR) {
4684                 /* reset fd counters */
4685                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4686                 if (pf->fd_tcp_rule > 0) {
4687                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4688                         dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4689                         pf->fd_tcp_rule = 0;
4690                 }
4691                 i40e_fdir_filter_restore(vsi);
4692         }
4693         i40e_service_event_schedule(pf);
4694
4695         return 0;
4696 }
4697
4698 /**
4699  * i40e_vsi_reinit_locked - Reset the VSI
4700  * @vsi: the VSI being configured
4701  *
4702  * Rebuild the ring structs after some configuration
4703  * has changed, e.g. MTU size.
4704  **/
4705 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4706 {
4707         struct i40e_pf *pf = vsi->back;
4708
4709         WARN_ON(in_interrupt());
4710         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4711                 usleep_range(1000, 2000);
4712         i40e_down(vsi);
4713
4714         /* Give a VF some time to respond to the reset.  The
4715          * two second wait is based upon the watchdog cycle in
4716          * the VF driver.
4717          */
4718         if (vsi->type == I40E_VSI_SRIOV)
4719                 msleep(2000);
4720         i40e_up(vsi);
4721         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4722 }
4723
4724 /**
4725  * i40e_up - Bring the connection back up after being down
4726  * @vsi: the VSI being configured
4727  **/
4728 int i40e_up(struct i40e_vsi *vsi)
4729 {
4730         int err;
4731
4732         err = i40e_vsi_configure(vsi);
4733         if (!err)
4734                 err = i40e_up_complete(vsi);
4735
4736         return err;
4737 }
4738
4739 /**
4740  * i40e_down - Shutdown the connection processing
4741  * @vsi: the VSI being stopped
4742  **/
4743 void i40e_down(struct i40e_vsi *vsi)
4744 {
4745         int i;
4746
4747         /* It is assumed that the caller of this function
4748          * sets the vsi->state __I40E_DOWN bit.
4749          */
4750         if (vsi->netdev) {
4751                 netif_carrier_off(vsi->netdev);
4752                 netif_tx_disable(vsi->netdev);
4753         }
4754         i40e_vsi_disable_irq(vsi);
4755         i40e_vsi_control_rings(vsi, false);
4756         i40e_napi_disable_all(vsi);
4757
4758         for (i = 0; i < vsi->num_queue_pairs; i++) {
4759                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4760                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4761         }
4762 }
4763
4764 /**
4765  * i40e_setup_tc - configure multiple traffic classes
4766  * @netdev: net device to configure
4767  * @tc: number of traffic classes to enable
4768  **/
4769 #ifdef I40E_FCOE
4770 int i40e_setup_tc(struct net_device *netdev, u8 tc)
4771 #else
4772 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4773 #endif
4774 {
4775         struct i40e_netdev_priv *np = netdev_priv(netdev);
4776         struct i40e_vsi *vsi = np->vsi;
4777         struct i40e_pf *pf = vsi->back;
4778         u8 enabled_tc = 0;
4779         int ret = -EINVAL;
4780         int i;
4781
4782         /* Check if DCB enabled to continue */
4783         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4784                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4785                 goto exit;
4786         }
4787
4788         /* Check if MFP enabled */
4789         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4790                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4791                 goto exit;
4792         }
4793
4794         /* Check whether tc count is within enabled limit */
4795         if (tc > i40e_pf_get_num_tc(pf)) {
4796                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4797                 goto exit;
4798         }
4799
4800         /* Generate TC map for number of tc requested */
4801         for (i = 0; i < tc; i++)
4802                 enabled_tc |= (1 << i);
4803
4804         /* Requesting same TC configuration as already enabled */
4805         if (enabled_tc == vsi->tc_config.enabled_tc)
4806                 return 0;
4807
4808         /* Quiesce VSI queues */
4809         i40e_quiesce_vsi(vsi);
4810
4811         /* Configure VSI for enabled TCs */
4812         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4813         if (ret) {
4814                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4815                             vsi->seid);
4816                 goto exit;
4817         }
4818
4819         /* Unquiesce VSI */
4820         i40e_unquiesce_vsi(vsi);
4821
4822 exit:
4823         return ret;
4824 }
4825
4826 /**
4827  * i40e_open - Called when a network interface is made active
4828  * @netdev: network interface device structure
4829  *
4830  * The open entry point is called when a network interface is made
4831  * active by the system (IFF_UP).  At this point all resources needed
4832  * for transmit and receive operations are allocated, the interrupt
4833  * handler is registered with the OS, the netdev watchdog subtask is
4834  * enabled, and the stack is notified that the interface is ready.
4835  *
4836  * Returns 0 on success, negative value on failure
4837  **/
4838 int i40e_open(struct net_device *netdev)
4839 {
4840         struct i40e_netdev_priv *np = netdev_priv(netdev);
4841         struct i40e_vsi *vsi = np->vsi;
4842         struct i40e_pf *pf = vsi->back;
4843         int err;
4844
4845         /* disallow open during test or if eeprom is broken */
4846         if (test_bit(__I40E_TESTING, &pf->state) ||
4847             test_bit(__I40E_BAD_EEPROM, &pf->state))
4848                 return -EBUSY;
4849
4850         netif_carrier_off(netdev);
4851
4852         err = i40e_vsi_open(vsi);
4853         if (err)
4854                 return err;
4855
4856         /* configure global TSO hardware offload settings */
4857         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4858                                                        TCP_FLAG_FIN) >> 16);
4859         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4860                                                        TCP_FLAG_FIN |
4861                                                        TCP_FLAG_CWR) >> 16);
4862         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4863
4864 #ifdef CONFIG_I40E_VXLAN
4865         vxlan_get_rx_port(netdev);
4866 #endif
4867
4868         return 0;
4869 }
4870
4871 /**
4872  * i40e_vsi_open -
4873  * @vsi: the VSI to open
4874  *
4875  * Finish initialization of the VSI.
4876  *
4877  * Returns 0 on success, negative value on failure
4878  **/
4879 int i40e_vsi_open(struct i40e_vsi *vsi)
4880 {
4881         struct i40e_pf *pf = vsi->back;
4882         char int_name[I40E_INT_NAME_STR_LEN];
4883         int err;
4884
4885         /* allocate descriptors */
4886         err = i40e_vsi_setup_tx_resources(vsi);
4887         if (err)
4888                 goto err_setup_tx;
4889         err = i40e_vsi_setup_rx_resources(vsi);
4890         if (err)
4891                 goto err_setup_rx;
4892
4893         err = i40e_vsi_configure(vsi);
4894         if (err)
4895                 goto err_setup_rx;
4896
4897         if (vsi->netdev) {
4898                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4899                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4900                 err = i40e_vsi_request_irq(vsi, int_name);
4901                 if (err)
4902                         goto err_setup_rx;
4903
4904                 /* Notify the stack of the actual queue counts. */
4905                 err = netif_set_real_num_tx_queues(vsi->netdev,
4906                                                    vsi->num_queue_pairs);
4907                 if (err)
4908                         goto err_set_queues;
4909
4910                 err = netif_set_real_num_rx_queues(vsi->netdev,
4911                                                    vsi->num_queue_pairs);
4912                 if (err)
4913                         goto err_set_queues;
4914
4915         } else if (vsi->type == I40E_VSI_FDIR) {
4916                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
4917                          dev_driver_string(&pf->pdev->dev),
4918                          dev_name(&pf->pdev->dev));
4919                 err = i40e_vsi_request_irq(vsi, int_name);
4920
4921         } else {
4922                 err = -EINVAL;
4923                 goto err_setup_rx;
4924         }
4925
4926         err = i40e_up_complete(vsi);
4927         if (err)
4928                 goto err_up_complete;
4929
4930         return 0;
4931
4932 err_up_complete:
4933         i40e_down(vsi);
4934 err_set_queues:
4935         i40e_vsi_free_irq(vsi);
4936 err_setup_rx:
4937         i40e_vsi_free_rx_resources(vsi);
4938 err_setup_tx:
4939         i40e_vsi_free_tx_resources(vsi);
4940         if (vsi == pf->vsi[pf->lan_vsi])
4941                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4942
4943         return err;
4944 }
4945
4946 /**
4947  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4948  * @pf: Pointer to pf
4949  *
4950  * This function destroys the hlist where all the Flow Director
4951  * filters were saved.
4952  **/
4953 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4954 {
4955         struct i40e_fdir_filter *filter;
4956         struct hlist_node *node2;
4957
4958         hlist_for_each_entry_safe(filter, node2,
4959                                   &pf->fdir_filter_list, fdir_node) {
4960                 hlist_del(&filter->fdir_node);
4961                 kfree(filter);
4962         }
4963         pf->fdir_pf_active_filters = 0;
4964 }
4965
4966 /**
4967  * i40e_close - Disables a network interface
4968  * @netdev: network interface device structure
4969  *
4970  * The close entry point is called when an interface is de-activated
4971  * by the OS.  The hardware is still under the driver's control, but
4972  * this netdev interface is disabled.
4973  *
4974  * Returns 0, this is not allowed to fail
4975  **/
4976 #ifdef I40E_FCOE
4977 int i40e_close(struct net_device *netdev)
4978 #else
4979 static int i40e_close(struct net_device *netdev)
4980 #endif
4981 {
4982         struct i40e_netdev_priv *np = netdev_priv(netdev);
4983         struct i40e_vsi *vsi = np->vsi;
4984
4985         i40e_vsi_close(vsi);
4986
4987         return 0;
4988 }
4989
4990 /**
4991  * i40e_do_reset - Start a PF or Core Reset sequence
4992  * @pf: board private structure
4993  * @reset_flags: which reset is requested
4994  *
4995  * The essential difference in resets is that the PF Reset
4996  * doesn't clear the packet buffers, doesn't reset the PE
4997  * firmware, and doesn't bother the other PFs on the chip.
4998  **/
4999 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5000 {
5001         u32 val;
5002
5003         WARN_ON(in_interrupt());
5004
5005         if (i40e_check_asq_alive(&pf->hw))
5006                 i40e_vc_notify_reset(pf);
5007
5008         /* do the biggest reset indicated */
5009         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
5010
5011                 /* Request a Global Reset
5012                  *
5013                  * This will start the chip's countdown to the actual full
5014                  * chip reset event, and a warning interrupt to be sent
5015                  * to all PFs, including the requestor.  Our handler
5016                  * for the warning interrupt will deal with the shutdown
5017                  * and recovery of the switch setup.
5018                  */
5019                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5020                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5021                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5022                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5023
5024         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
5025
5026                 /* Request a Core Reset
5027                  *
5028                  * Same as Global Reset, except does *not* include the MAC/PHY
5029                  */
5030                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5031                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5032                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5033                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5034                 i40e_flush(&pf->hw);
5035
5036         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
5037
5038                 /* Request a PF Reset
5039                  *
5040                  * Resets only the PF-specific registers
5041                  *
5042                  * This goes directly to the tear-down and rebuild of
5043                  * the switch, since we need to do all the recovery as
5044                  * for the Core Reset.
5045                  */
5046                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5047                 i40e_handle_reset_warning(pf);
5048
5049         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
5050                 int v;
5051
5052                 /* Find the VSI(s) that requested a re-init */
5053                 dev_info(&pf->pdev->dev,
5054                          "VSI reinit requested\n");
5055                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5056                         struct i40e_vsi *vsi = pf->vsi[v];
5057                         if (vsi != NULL &&
5058                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5059                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5060                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5061                         }
5062                 }
5063
5064                 /* no further action needed, so return now */
5065                 return;
5066         } else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
5067                 int v;
5068
5069                 /* Find the VSI(s) that needs to be brought down */
5070                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5071                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5072                         struct i40e_vsi *vsi = pf->vsi[v];
5073                         if (vsi != NULL &&
5074                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5075                                 set_bit(__I40E_DOWN, &vsi->state);
5076                                 i40e_down(vsi);
5077                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5078                         }
5079                 }
5080
5081                 /* no further action needed, so return now */
5082                 return;
5083         } else {
5084                 dev_info(&pf->pdev->dev,
5085                          "bad reset request 0x%08x\n", reset_flags);
5086                 return;
5087         }
5088 }
5089
5090 #ifdef CONFIG_I40E_DCB
5091 /**
5092  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5093  * @pf: board private structure
5094  * @old_cfg: current DCB config
5095  * @new_cfg: new DCB config
5096  **/
5097 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5098                             struct i40e_dcbx_config *old_cfg,
5099                             struct i40e_dcbx_config *new_cfg)
5100 {
5101         bool need_reconfig = false;
5102
5103         /* Check if ETS configuration has changed */
5104         if (memcmp(&new_cfg->etscfg,
5105                    &old_cfg->etscfg,
5106                    sizeof(new_cfg->etscfg))) {
5107                 /* If Priority Table has changed reconfig is needed */
5108                 if (memcmp(&new_cfg->etscfg.prioritytable,
5109                            &old_cfg->etscfg.prioritytable,
5110                            sizeof(new_cfg->etscfg.prioritytable))) {
5111                         need_reconfig = true;
5112                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5113                 }
5114
5115                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5116                            &old_cfg->etscfg.tcbwtable,
5117                            sizeof(new_cfg->etscfg.tcbwtable)))
5118                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5119
5120                 if (memcmp(&new_cfg->etscfg.tsatable,
5121                            &old_cfg->etscfg.tsatable,
5122                            sizeof(new_cfg->etscfg.tsatable)))
5123                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5124         }
5125
5126         /* Check if PFC configuration has changed */
5127         if (memcmp(&new_cfg->pfc,
5128                    &old_cfg->pfc,
5129                    sizeof(new_cfg->pfc))) {
5130                 need_reconfig = true;
5131                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5132         }
5133
5134         /* Check if APP Table has changed */
5135         if (memcmp(&new_cfg->app,
5136                    &old_cfg->app,
5137                    sizeof(new_cfg->app))) {
5138                 need_reconfig = true;
5139                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5140         }
5141
5142         dev_dbg(&pf->pdev->dev, "%s: need_reconfig=%d\n", __func__,
5143                 need_reconfig);
5144         return need_reconfig;
5145 }
5146
5147 /**
5148  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5149  * @pf: board private structure
5150  * @e: event info posted on ARQ
5151  **/
5152 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5153                                   struct i40e_arq_event_info *e)
5154 {
5155         struct i40e_aqc_lldp_get_mib *mib =
5156                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5157         struct i40e_hw *hw = &pf->hw;
5158         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
5159         struct i40e_dcbx_config tmp_dcbx_cfg;
5160         bool need_reconfig = false;
5161         int ret = 0;
5162         u8 type;
5163
5164         /* Not DCB capable or capability disabled */
5165         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5166                 return ret;
5167
5168         /* Ignore if event is not for Nearest Bridge */
5169         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5170                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5171         dev_dbg(&pf->pdev->dev,
5172                 "%s: LLDP event mib bridge type 0x%x\n", __func__, type);
5173         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5174                 return ret;
5175
5176         /* Check MIB Type and return if event for Remote MIB update */
5177         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5178         dev_dbg(&pf->pdev->dev,
5179                 "%s: LLDP event mib type %s\n", __func__,
5180                 type ? "remote" : "local");
5181         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5182                 /* Update the remote cached instance and return */
5183                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5184                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5185                                 &hw->remote_dcbx_config);
5186                 goto exit;
5187         }
5188
5189         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
5190         /* Store the old configuration */
5191         tmp_dcbx_cfg = *dcbx_cfg;
5192
5193         /* Get updated DCBX data from firmware */
5194         ret = i40e_get_dcb_config(&pf->hw);
5195         if (ret) {
5196                 dev_info(&pf->pdev->dev, "Failed querying DCB configuration data from firmware.\n");
5197                 goto exit;
5198         }
5199
5200         /* No change detected in DCBX configs */
5201         if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
5202                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5203                 goto exit;
5204         }
5205
5206         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg, dcbx_cfg);
5207
5208         i40e_dcbnl_flush_apps(pf, dcbx_cfg);
5209
5210         if (!need_reconfig)
5211                 goto exit;
5212
5213         /* Enable DCB tagging only when more than one TC */
5214         if (i40e_dcb_get_num_tc(dcbx_cfg) > 1)
5215                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5216         else
5217                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5218
5219         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5220         /* Reconfiguration needed quiesce all VSIs */
5221         i40e_pf_quiesce_all_vsi(pf);
5222
5223         /* Changes in configuration update VEB/VSI */
5224         i40e_dcb_reconfigure(pf);
5225
5226         ret = i40e_resume_port_tx(pf);
5227
5228         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5229         /* In case of error no point in resuming VSIs */
5230         if (ret)
5231                 goto exit;
5232
5233         /* Wait for the PF's Tx queues to be disabled */
5234         ret = i40e_pf_wait_txq_disabled(pf);
5235         if (!ret)
5236                 i40e_pf_unquiesce_all_vsi(pf);
5237 exit:
5238         return ret;
5239 }
5240 #endif /* CONFIG_I40E_DCB */
5241
5242 /**
5243  * i40e_do_reset_safe - Protected reset path for userland calls.
5244  * @pf: board private structure
5245  * @reset_flags: which reset is requested
5246  *
5247  **/
5248 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5249 {
5250         rtnl_lock();
5251         i40e_do_reset(pf, reset_flags);
5252         rtnl_unlock();
5253 }
5254
5255 /**
5256  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5257  * @pf: board private structure
5258  * @e: event info posted on ARQ
5259  *
5260  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5261  * and VF queues
5262  **/
5263 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5264                                            struct i40e_arq_event_info *e)
5265 {
5266         struct i40e_aqc_lan_overflow *data =
5267                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5268         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5269         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5270         struct i40e_hw *hw = &pf->hw;
5271         struct i40e_vf *vf;
5272         u16 vf_id;
5273
5274         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5275                 queue, qtx_ctl);
5276
5277         /* Queue belongs to VF, find the VF and issue VF reset */
5278         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5279             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5280                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5281                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5282                 vf_id -= hw->func_caps.vf_base_id;
5283                 vf = &pf->vf[vf_id];
5284                 i40e_vc_notify_vf_reset(vf);
5285                 /* Allow VF to process pending reset notification */
5286                 msleep(20);
5287                 i40e_reset_vf(vf, false);
5288         }
5289 }
5290
5291 /**
5292  * i40e_service_event_complete - Finish up the service event
5293  * @pf: board private structure
5294  **/
5295 static void i40e_service_event_complete(struct i40e_pf *pf)
5296 {
5297         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5298
5299         /* flush memory to make sure state is correct before next watchog */
5300         smp_mb__before_atomic();
5301         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5302 }
5303
5304 /**
5305  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5306  * @pf: board private structure
5307  **/
5308 int i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5309 {
5310         int val, fcnt_prog;
5311
5312         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5313         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5314         return fcnt_prog;
5315 }
5316
5317 /**
5318  * i40e_get_current_fd_count - Get the count of total FD filters programmed
5319  * @pf: board private structure
5320  **/
5321 int i40e_get_current_fd_count(struct i40e_pf *pf)
5322 {
5323         int val, fcnt_prog;
5324         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5325         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5326                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5327                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5328         return fcnt_prog;
5329 }
5330
5331 /**
5332  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5333  * @pf: board private structure
5334  **/
5335 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5336 {
5337         u32 fcnt_prog, fcnt_avail;
5338
5339         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5340                 return;
5341
5342         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5343          * to re-enable
5344          */
5345         fcnt_prog = i40e_get_cur_guaranteed_fd_count(pf);
5346         fcnt_avail = pf->fdir_pf_filter_count;
5347         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5348             (pf->fd_add_err == 0) ||
5349             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5350                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5351                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5352                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5353                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5354                 }
5355         }
5356         /* Wait for some more space to be available to turn on ATR */
5357         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5358                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5359                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5360                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5361                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5362                 }
5363         }
5364 }
5365
5366 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5367 /**
5368  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5369  * @pf: board private structure
5370  **/
5371 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5372 {
5373         int flush_wait_retry = 50;
5374         int reg;
5375
5376         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5377                 return;
5378
5379         if (time_after(jiffies, pf->fd_flush_timestamp +
5380                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5381                 set_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5382                 pf->fd_flush_timestamp = jiffies;
5383                 pf->auto_disable_flags |= I40E_FLAG_FD_SB_ENABLED;
5384                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5385                 /* flush all filters */
5386                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5387                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5388                 i40e_flush(&pf->hw);
5389                 pf->fd_flush_cnt++;
5390                 pf->fd_add_err = 0;
5391                 do {
5392                         /* Check FD flush status every 5-6msec */
5393                         usleep_range(5000, 6000);
5394                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5395                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5396                                 break;
5397                 } while (flush_wait_retry--);
5398                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5399                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5400                 } else {
5401                         /* replay sideband filters */
5402                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5403
5404                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5405                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5406                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5407                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5408                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5409                 }
5410         }
5411 }
5412
5413 /**
5414  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5415  * @pf: board private structure
5416  **/
5417 int i40e_get_current_atr_cnt(struct i40e_pf *pf)
5418 {
5419         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5420 }
5421
5422 /* We can see up to 256 filter programming desc in transit if the filters are
5423  * being applied really fast; before we see the first
5424  * filter miss error on Rx queue 0. Accumulating enough error messages before
5425  * reacting will make sure we don't cause flush too often.
5426  */
5427 #define I40E_MAX_FD_PROGRAM_ERROR 256
5428
5429 /**
5430  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5431  * @pf: board private structure
5432  **/
5433 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5434 {
5435
5436         /* if interface is down do nothing */
5437         if (test_bit(__I40E_DOWN, &pf->state))
5438                 return;
5439
5440         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5441                 return;
5442
5443         if ((pf->fd_add_err >= I40E_MAX_FD_PROGRAM_ERROR) &&
5444             (i40e_get_current_atr_cnt(pf) >= pf->fd_atr_cnt) &&
5445             (i40e_get_current_atr_cnt(pf) > pf->fdir_pf_filter_count))
5446                 i40e_fdir_flush_and_replay(pf);
5447
5448         i40e_fdir_check_and_reenable(pf);
5449
5450 }
5451
5452 /**
5453  * i40e_vsi_link_event - notify VSI of a link event
5454  * @vsi: vsi to be notified
5455  * @link_up: link up or down
5456  **/
5457 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5458 {
5459         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5460                 return;
5461
5462         switch (vsi->type) {
5463         case I40E_VSI_MAIN:
5464 #ifdef I40E_FCOE
5465         case I40E_VSI_FCOE:
5466 #endif
5467                 if (!vsi->netdev || !vsi->netdev_registered)
5468                         break;
5469
5470                 if (link_up) {
5471                         netif_carrier_on(vsi->netdev);
5472                         netif_tx_wake_all_queues(vsi->netdev);
5473                 } else {
5474                         netif_carrier_off(vsi->netdev);
5475                         netif_tx_stop_all_queues(vsi->netdev);
5476                 }
5477                 break;
5478
5479         case I40E_VSI_SRIOV:
5480         case I40E_VSI_VMDQ2:
5481         case I40E_VSI_CTRL:
5482         case I40E_VSI_MIRROR:
5483         default:
5484                 /* there is no notification for other VSIs */
5485                 break;
5486         }
5487 }
5488
5489 /**
5490  * i40e_veb_link_event - notify elements on the veb of a link event
5491  * @veb: veb to be notified
5492  * @link_up: link up or down
5493  **/
5494 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5495 {
5496         struct i40e_pf *pf;
5497         int i;
5498
5499         if (!veb || !veb->pf)
5500                 return;
5501         pf = veb->pf;
5502
5503         /* depth first... */
5504         for (i = 0; i < I40E_MAX_VEB; i++)
5505                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5506                         i40e_veb_link_event(pf->veb[i], link_up);
5507
5508         /* ... now the local VSIs */
5509         for (i = 0; i < pf->num_alloc_vsi; i++)
5510                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5511                         i40e_vsi_link_event(pf->vsi[i], link_up);
5512 }
5513
5514 /**
5515  * i40e_link_event - Update netif_carrier status
5516  * @pf: board private structure
5517  **/
5518 static void i40e_link_event(struct i40e_pf *pf)
5519 {
5520         bool new_link, old_link;
5521         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5522         u8 new_link_speed, old_link_speed;
5523
5524         /* set this to force the get_link_status call to refresh state */
5525         pf->hw.phy.get_link_info = true;
5526
5527         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5528         new_link = i40e_get_link_status(&pf->hw);
5529         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5530         new_link_speed = pf->hw.phy.link_info.link_speed;
5531
5532         if (new_link == old_link &&
5533             new_link_speed == old_link_speed &&
5534             (test_bit(__I40E_DOWN, &vsi->state) ||
5535              new_link == netif_carrier_ok(vsi->netdev)))
5536                 return;
5537
5538         if (!test_bit(__I40E_DOWN, &vsi->state))
5539                 i40e_print_link_message(vsi, new_link);
5540
5541         /* Notify the base of the switch tree connected to
5542          * the link.  Floating VEBs are not notified.
5543          */
5544         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5545                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5546         else
5547                 i40e_vsi_link_event(vsi, new_link);
5548
5549         if (pf->vf)
5550                 i40e_vc_notify_link_state(pf);
5551
5552         if (pf->flags & I40E_FLAG_PTP)
5553                 i40e_ptp_set_increment(pf);
5554 }
5555
5556 /**
5557  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5558  * @pf: board private structure
5559  *
5560  * Set the per-queue flags to request a check for stuck queues in the irq
5561  * clean functions, then force interrupts to be sure the irq clean is called.
5562  **/
5563 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5564 {
5565         int i, v;
5566
5567         /* If we're down or resetting, just bail */
5568         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
5569                 return;
5570
5571         /* for each VSI/netdev
5572          *     for each Tx queue
5573          *         set the check flag
5574          *     for each q_vector
5575          *         force an interrupt
5576          */
5577         for (v = 0; v < pf->num_alloc_vsi; v++) {
5578                 struct i40e_vsi *vsi = pf->vsi[v];
5579                 int armed = 0;
5580
5581                 if (!pf->vsi[v] ||
5582                     test_bit(__I40E_DOWN, &vsi->state) ||
5583                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5584                         continue;
5585
5586                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5587                         set_check_for_tx_hang(vsi->tx_rings[i]);
5588                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5589                                      &vsi->tx_rings[i]->state))
5590                                 armed++;
5591                 }
5592
5593                 if (armed) {
5594                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5595                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5596                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5597                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
5598                                       I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
5599                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
5600                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
5601                         } else {
5602                                 u16 vec = vsi->base_vector - 1;
5603                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5604                                       I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK |
5605                                       I40E_PFINT_DYN_CTLN_ITR_INDX_MASK |
5606                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_ENA_MASK |
5607                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK);
5608                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5609                                         wr32(&vsi->back->hw,
5610                                              I40E_PFINT_DYN_CTLN(vec), val);
5611                         }
5612                         i40e_flush(&vsi->back->hw);
5613                 }
5614         }
5615 }
5616
5617 /**
5618  * i40e_watchdog_subtask - periodic checks not using event driven response
5619  * @pf: board private structure
5620  **/
5621 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5622 {
5623         int i;
5624
5625         /* if interface is down do nothing */
5626         if (test_bit(__I40E_DOWN, &pf->state) ||
5627             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5628                 return;
5629
5630         /* make sure we don't do these things too often */
5631         if (time_before(jiffies, (pf->service_timer_previous +
5632                                   pf->service_timer_period)))
5633                 return;
5634         pf->service_timer_previous = jiffies;
5635
5636         i40e_check_hang_subtask(pf);
5637         i40e_link_event(pf);
5638
5639         /* Update the stats for active netdevs so the network stack
5640          * can look at updated numbers whenever it cares to
5641          */
5642         for (i = 0; i < pf->num_alloc_vsi; i++)
5643                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5644                         i40e_update_stats(pf->vsi[i]);
5645
5646         /* Update the stats for the active switching components */
5647         for (i = 0; i < I40E_MAX_VEB; i++)
5648                 if (pf->veb[i])
5649                         i40e_update_veb_stats(pf->veb[i]);
5650
5651         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5652 }
5653
5654 /**
5655  * i40e_reset_subtask - Set up for resetting the device and driver
5656  * @pf: board private structure
5657  **/
5658 static void i40e_reset_subtask(struct i40e_pf *pf)
5659 {
5660         u32 reset_flags = 0;
5661
5662         rtnl_lock();
5663         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5664                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5665                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5666         }
5667         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5668                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5669                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5670         }
5671         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5672                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5673                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5674         }
5675         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5676                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5677                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5678         }
5679         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5680                 reset_flags |= (1 << __I40E_DOWN_REQUESTED);
5681                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5682         }
5683
5684         /* If there's a recovery already waiting, it takes
5685          * precedence before starting a new reset sequence.
5686          */
5687         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5688                 i40e_handle_reset_warning(pf);
5689                 goto unlock;
5690         }
5691
5692         /* If we're already down or resetting, just bail */
5693         if (reset_flags &&
5694             !test_bit(__I40E_DOWN, &pf->state) &&
5695             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5696                 i40e_do_reset(pf, reset_flags);
5697
5698 unlock:
5699         rtnl_unlock();
5700 }
5701
5702 /**
5703  * i40e_handle_link_event - Handle link event
5704  * @pf: board private structure
5705  * @e: event info posted on ARQ
5706  **/
5707 static void i40e_handle_link_event(struct i40e_pf *pf,
5708                                    struct i40e_arq_event_info *e)
5709 {
5710         struct i40e_hw *hw = &pf->hw;
5711         struct i40e_aqc_get_link_status *status =
5712                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5713         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
5714
5715         /* save off old link status information */
5716         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
5717                sizeof(pf->hw.phy.link_info_old));
5718
5719         /* Do a new status request to re-enable LSE reporting
5720          * and load new status information into the hw struct
5721          * This completely ignores any state information
5722          * in the ARQ event info, instead choosing to always
5723          * issue the AQ update link status command.
5724          */
5725         i40e_link_event(pf);
5726
5727         /* check for unqualified module, if link is down */
5728         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5729             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5730             (!(status->link_info & I40E_AQ_LINK_UP)))
5731                 dev_err(&pf->pdev->dev,
5732                         "The driver failed to link because an unqualified module was detected.\n");
5733 }
5734
5735 /**
5736  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5737  * @pf: board private structure
5738  **/
5739 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5740 {
5741         struct i40e_arq_event_info event;
5742         struct i40e_hw *hw = &pf->hw;
5743         u16 pending, i = 0;
5744         i40e_status ret;
5745         u16 opcode;
5746         u32 oldval;
5747         u32 val;
5748
5749         /* Do not run clean AQ when PF reset fails */
5750         if (test_bit(__I40E_RESET_FAILED, &pf->state))
5751                 return;
5752
5753         /* check for error indications */
5754         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5755         oldval = val;
5756         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5757                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5758                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5759         }
5760         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5761                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5762                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5763         }
5764         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5765                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5766                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5767         }
5768         if (oldval != val)
5769                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5770
5771         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5772         oldval = val;
5773         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5774                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5775                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5776         }
5777         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5778                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5779                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5780         }
5781         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5782                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5783                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5784         }
5785         if (oldval != val)
5786                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5787
5788         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
5789         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
5790         if (!event.msg_buf)
5791                 return;
5792
5793         do {
5794                 ret = i40e_clean_arq_element(hw, &event, &pending);
5795                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
5796                         break;
5797                 else if (ret) {
5798                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5799                         break;
5800                 }
5801
5802                 opcode = le16_to_cpu(event.desc.opcode);
5803                 switch (opcode) {
5804
5805                 case i40e_aqc_opc_get_link_status:
5806                         i40e_handle_link_event(pf, &event);
5807                         break;
5808                 case i40e_aqc_opc_send_msg_to_pf:
5809                         ret = i40e_vc_process_vf_msg(pf,
5810                                         le16_to_cpu(event.desc.retval),
5811                                         le32_to_cpu(event.desc.cookie_high),
5812                                         le32_to_cpu(event.desc.cookie_low),
5813                                         event.msg_buf,
5814                                         event.msg_len);
5815                         break;
5816                 case i40e_aqc_opc_lldp_update_mib:
5817                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5818 #ifdef CONFIG_I40E_DCB
5819                         rtnl_lock();
5820                         ret = i40e_handle_lldp_event(pf, &event);
5821                         rtnl_unlock();
5822 #endif /* CONFIG_I40E_DCB */
5823                         break;
5824                 case i40e_aqc_opc_event_lan_overflow:
5825                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5826                         i40e_handle_lan_overflow_event(pf, &event);
5827                         break;
5828                 case i40e_aqc_opc_send_msg_to_peer:
5829                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5830                         break;
5831                 default:
5832                         dev_info(&pf->pdev->dev,
5833                                  "ARQ Error: Unknown event 0x%04x received\n",
5834                                  opcode);
5835                         break;
5836                 }
5837         } while (pending && (i++ < pf->adminq_work_limit));
5838
5839         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5840         /* re-enable Admin queue interrupt cause */
5841         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5842         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5843         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5844         i40e_flush(hw);
5845
5846         kfree(event.msg_buf);
5847 }
5848
5849 /**
5850  * i40e_verify_eeprom - make sure eeprom is good to use
5851  * @pf: board private structure
5852  **/
5853 static void i40e_verify_eeprom(struct i40e_pf *pf)
5854 {
5855         int err;
5856
5857         err = i40e_diag_eeprom_test(&pf->hw);
5858         if (err) {
5859                 /* retry in case of garbage read */
5860                 err = i40e_diag_eeprom_test(&pf->hw);
5861                 if (err) {
5862                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5863                                  err);
5864                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5865                 }
5866         }
5867
5868         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5869                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5870                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5871         }
5872 }
5873
5874 /**
5875  * i40e_config_bridge_mode - Configure the HW bridge mode
5876  * @veb: pointer to the bridge instance
5877  *
5878  * Configure the loop back mode for the LAN VSI that is downlink to the
5879  * specified HW bridge instance. It is expected this function is called
5880  * when a new HW bridge is instantiated.
5881  **/
5882 static void i40e_config_bridge_mode(struct i40e_veb *veb)
5883 {
5884         struct i40e_pf *pf = veb->pf;
5885
5886         dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
5887                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
5888         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
5889                 i40e_disable_pf_switch_lb(pf);
5890         else
5891                 i40e_enable_pf_switch_lb(pf);
5892 }
5893
5894 /**
5895  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5896  * @veb: pointer to the VEB instance
5897  *
5898  * This is a recursive function that first builds the attached VSIs then
5899  * recurses in to build the next layer of VEB.  We track the connections
5900  * through our own index numbers because the seid's from the HW could
5901  * change across the reset.
5902  **/
5903 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5904 {
5905         struct i40e_vsi *ctl_vsi = NULL;
5906         struct i40e_pf *pf = veb->pf;
5907         int v, veb_idx;
5908         int ret;
5909
5910         /* build VSI that owns this VEB, temporarily attached to base VEB */
5911         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
5912                 if (pf->vsi[v] &&
5913                     pf->vsi[v]->veb_idx == veb->idx &&
5914                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5915                         ctl_vsi = pf->vsi[v];
5916                         break;
5917                 }
5918         }
5919         if (!ctl_vsi) {
5920                 dev_info(&pf->pdev->dev,
5921                          "missing owner VSI for veb_idx %d\n", veb->idx);
5922                 ret = -ENOENT;
5923                 goto end_reconstitute;
5924         }
5925         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5926                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5927         ret = i40e_add_vsi(ctl_vsi);
5928         if (ret) {
5929                 dev_info(&pf->pdev->dev,
5930                          "rebuild of owner VSI failed: %d\n", ret);
5931                 goto end_reconstitute;
5932         }
5933         i40e_vsi_reset_stats(ctl_vsi);
5934
5935         /* create the VEB in the switch and move the VSI onto the VEB */
5936         ret = i40e_add_veb(veb, ctl_vsi);
5937         if (ret)
5938                 goto end_reconstitute;
5939
5940         i40e_config_bridge_mode(veb);
5941
5942         /* create the remaining VSIs attached to this VEB */
5943         for (v = 0; v < pf->num_alloc_vsi; v++) {
5944                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5945                         continue;
5946
5947                 if (pf->vsi[v]->veb_idx == veb->idx) {
5948                         struct i40e_vsi *vsi = pf->vsi[v];
5949                         vsi->uplink_seid = veb->seid;
5950                         ret = i40e_add_vsi(vsi);
5951                         if (ret) {
5952                                 dev_info(&pf->pdev->dev,
5953                                          "rebuild of vsi_idx %d failed: %d\n",
5954                                          v, ret);
5955                                 goto end_reconstitute;
5956                         }
5957                         i40e_vsi_reset_stats(vsi);
5958                 }
5959         }
5960
5961         /* create any VEBs attached to this VEB - RECURSION */
5962         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5963                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5964                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5965                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5966                         if (ret)
5967                                 break;
5968                 }
5969         }
5970
5971 end_reconstitute:
5972         return ret;
5973 }
5974
5975 /**
5976  * i40e_get_capabilities - get info about the HW
5977  * @pf: the PF struct
5978  **/
5979 static int i40e_get_capabilities(struct i40e_pf *pf)
5980 {
5981         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5982         u16 data_size;
5983         int buf_len;
5984         int err;
5985
5986         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5987         do {
5988                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5989                 if (!cap_buf)
5990                         return -ENOMEM;
5991
5992                 /* this loads the data into the hw struct for us */
5993                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5994                                             &data_size,
5995                                             i40e_aqc_opc_list_func_capabilities,
5996                                             NULL);
5997                 /* data loaded, buffer no longer needed */
5998                 kfree(cap_buf);
5999
6000                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6001                         /* retry with a larger buffer */
6002                         buf_len = data_size;
6003                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6004                         dev_info(&pf->pdev->dev,
6005                                  "capability discovery failed: aq=%d\n",
6006                                  pf->hw.aq.asq_last_status);
6007                         return -ENODEV;
6008                 }
6009         } while (err);
6010
6011         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6012             (pf->hw.aq.fw_maj_ver < 2)) {
6013                 pf->hw.func_caps.num_msix_vectors++;
6014                 pf->hw.func_caps.num_msix_vectors_vf++;
6015         }
6016
6017         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6018                 dev_info(&pf->pdev->dev,
6019                          "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",
6020                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6021                          pf->hw.func_caps.num_msix_vectors,
6022                          pf->hw.func_caps.num_msix_vectors_vf,
6023                          pf->hw.func_caps.fd_filters_guaranteed,
6024                          pf->hw.func_caps.fd_filters_best_effort,
6025                          pf->hw.func_caps.num_tx_qp,
6026                          pf->hw.func_caps.num_vsis);
6027
6028 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6029                        + pf->hw.func_caps.num_vfs)
6030         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6031                 dev_info(&pf->pdev->dev,
6032                          "got num_vsis %d, setting num_vsis to %d\n",
6033                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6034                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6035         }
6036
6037         return 0;
6038 }
6039
6040 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6041
6042 /**
6043  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6044  * @pf: board private structure
6045  **/
6046 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6047 {
6048         struct i40e_vsi *vsi;
6049         int i;
6050
6051         /* quick workaround for an NVM issue that leaves a critical register
6052          * uninitialized
6053          */
6054         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6055                 static const u32 hkey[] = {
6056                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6057                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6058                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6059                         0x95b3a76d};
6060
6061                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6062                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6063         }
6064
6065         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6066                 return;
6067
6068         /* find existing VSI and see if it needs configuring */
6069         vsi = NULL;
6070         for (i = 0; i < pf->num_alloc_vsi; i++) {
6071                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6072                         vsi = pf->vsi[i];
6073                         break;
6074                 }
6075         }
6076
6077         /* create a new VSI if none exists */
6078         if (!vsi) {
6079                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6080                                      pf->vsi[pf->lan_vsi]->seid, 0);
6081                 if (!vsi) {
6082                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6083                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6084                         return;
6085                 }
6086         }
6087
6088         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6089 }
6090
6091 /**
6092  * i40e_fdir_teardown - release the Flow Director resources
6093  * @pf: board private structure
6094  **/
6095 static void i40e_fdir_teardown(struct i40e_pf *pf)
6096 {
6097         int i;
6098
6099         i40e_fdir_filter_exit(pf);
6100         for (i = 0; i < pf->num_alloc_vsi; i++) {
6101                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6102                         i40e_vsi_release(pf->vsi[i]);
6103                         break;
6104                 }
6105         }
6106 }
6107
6108 /**
6109  * i40e_prep_for_reset - prep for the core to reset
6110  * @pf: board private structure
6111  *
6112  * Close up the VFs and other things in prep for pf Reset.
6113   **/
6114 static void i40e_prep_for_reset(struct i40e_pf *pf)
6115 {
6116         struct i40e_hw *hw = &pf->hw;
6117         i40e_status ret = 0;
6118         u32 v;
6119
6120         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6121         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6122                 return;
6123
6124         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6125
6126         /* quiesce the VSIs and their queues that are not already DOWN */
6127         i40e_pf_quiesce_all_vsi(pf);
6128
6129         for (v = 0; v < pf->num_alloc_vsi; v++) {
6130                 if (pf->vsi[v])
6131                         pf->vsi[v]->seid = 0;
6132         }
6133
6134         i40e_shutdown_adminq(&pf->hw);
6135
6136         /* call shutdown HMC */
6137         if (hw->hmc.hmc_obj) {
6138                 ret = i40e_shutdown_lan_hmc(hw);
6139                 if (ret)
6140                         dev_warn(&pf->pdev->dev,
6141                                  "shutdown_lan_hmc failed: %d\n", ret);
6142         }
6143 }
6144
6145 /**
6146  * i40e_send_version - update firmware with driver version
6147  * @pf: PF struct
6148  */
6149 static void i40e_send_version(struct i40e_pf *pf)
6150 {
6151         struct i40e_driver_version dv;
6152
6153         dv.major_version = DRV_VERSION_MAJOR;
6154         dv.minor_version = DRV_VERSION_MINOR;
6155         dv.build_version = DRV_VERSION_BUILD;
6156         dv.subbuild_version = 0;
6157         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6158         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6159 }
6160
6161 /**
6162  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6163  * @pf: board private structure
6164  * @reinit: if the Main VSI needs to re-initialized.
6165  **/
6166 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6167 {
6168         struct i40e_hw *hw = &pf->hw;
6169         u8 set_fc_aq_fail = 0;
6170         i40e_status ret;
6171         u32 v;
6172
6173         /* Now we wait for GRST to settle out.
6174          * We don't have to delete the VEBs or VSIs from the hw switch
6175          * because the reset will make them disappear.
6176          */
6177         ret = i40e_pf_reset(hw);
6178         if (ret) {
6179                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6180                 set_bit(__I40E_RESET_FAILED, &pf->state);
6181                 goto clear_recovery;
6182         }
6183         pf->pfr_count++;
6184
6185         if (test_bit(__I40E_DOWN, &pf->state))
6186                 goto clear_recovery;
6187         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6188
6189         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6190         ret = i40e_init_adminq(&pf->hw);
6191         if (ret) {
6192                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
6193                 goto clear_recovery;
6194         }
6195
6196         /* re-verify the eeprom if we just had an EMP reset */
6197         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6198                 i40e_verify_eeprom(pf);
6199
6200         i40e_clear_pxe_mode(hw);
6201         ret = i40e_get_capabilities(pf);
6202         if (ret) {
6203                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
6204                          ret);
6205                 goto end_core_reset;
6206         }
6207
6208         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6209                                 hw->func_caps.num_rx_qp,
6210                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6211         if (ret) {
6212                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6213                 goto end_core_reset;
6214         }
6215         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6216         if (ret) {
6217                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6218                 goto end_core_reset;
6219         }
6220
6221 #ifdef CONFIG_I40E_DCB
6222         ret = i40e_init_pf_dcb(pf);
6223         if (ret) {
6224                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6225                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6226                 /* Continue without DCB enabled */
6227         }
6228 #endif /* CONFIG_I40E_DCB */
6229 #ifdef I40E_FCOE
6230         ret = i40e_init_pf_fcoe(pf);
6231         if (ret)
6232                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6233
6234 #endif
6235         /* do basic switch setup */
6236         ret = i40e_setup_pf_switch(pf, reinit);
6237         if (ret)
6238                 goto end_core_reset;
6239
6240         /* driver is only interested in link up/down and module qualification
6241          * reports from firmware
6242          */
6243         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6244                                        I40E_AQ_EVENT_LINK_UPDOWN |
6245                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6246         if (ret)
6247                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", ret);
6248
6249         /* make sure our flow control settings are restored */
6250         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6251         if (ret)
6252                 dev_info(&pf->pdev->dev, "set fc fail, aq_err %d\n", ret);
6253
6254         /* Rebuild the VSIs and VEBs that existed before reset.
6255          * They are still in our local switch element arrays, so only
6256          * need to rebuild the switch model in the HW.
6257          *
6258          * If there were VEBs but the reconstitution failed, we'll try
6259          * try to recover minimal use by getting the basic PF VSI working.
6260          */
6261         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6262                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6263                 /* find the one VEB connected to the MAC, and find orphans */
6264                 for (v = 0; v < I40E_MAX_VEB; v++) {
6265                         if (!pf->veb[v])
6266                                 continue;
6267
6268                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6269                             pf->veb[v]->uplink_seid == 0) {
6270                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6271
6272                                 if (!ret)
6273                                         continue;
6274
6275                                 /* If Main VEB failed, we're in deep doodoo,
6276                                  * so give up rebuilding the switch and set up
6277                                  * for minimal rebuild of PF VSI.
6278                                  * If orphan failed, we'll report the error
6279                                  * but try to keep going.
6280                                  */
6281                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6282                                         dev_info(&pf->pdev->dev,
6283                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6284                                                  ret);
6285                                         pf->vsi[pf->lan_vsi]->uplink_seid
6286                                                                 = pf->mac_seid;
6287                                         break;
6288                                 } else if (pf->veb[v]->uplink_seid == 0) {
6289                                         dev_info(&pf->pdev->dev,
6290                                                  "rebuild of orphan VEB failed: %d\n",
6291                                                  ret);
6292                                 }
6293                         }
6294                 }
6295         }
6296
6297         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6298                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6299                 /* no VEB, so rebuild only the Main VSI */
6300                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6301                 if (ret) {
6302                         dev_info(&pf->pdev->dev,
6303                                  "rebuild of Main VSI failed: %d\n", ret);
6304                         goto end_core_reset;
6305                 }
6306         }
6307
6308         msleep(75);
6309         ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6310         if (ret) {
6311                 dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
6312                          pf->hw.aq.asq_last_status);
6313         }
6314
6315         /* reinit the misc interrupt */
6316         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6317                 ret = i40e_setup_misc_vector(pf);
6318
6319         /* restart the VSIs that were rebuilt and running before the reset */
6320         i40e_pf_unquiesce_all_vsi(pf);
6321
6322         if (pf->num_alloc_vfs) {
6323                 for (v = 0; v < pf->num_alloc_vfs; v++)
6324                         i40e_reset_vf(&pf->vf[v], true);
6325         }
6326
6327         /* tell the firmware that we're starting */
6328         i40e_send_version(pf);
6329
6330 end_core_reset:
6331         clear_bit(__I40E_RESET_FAILED, &pf->state);
6332 clear_recovery:
6333         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6334 }
6335
6336 /**
6337  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
6338  * @pf: board private structure
6339  *
6340  * Close up the VFs and other things in prep for a Core Reset,
6341  * then get ready to rebuild the world.
6342  **/
6343 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6344 {
6345         i40e_prep_for_reset(pf);
6346         i40e_reset_and_rebuild(pf, false);
6347 }
6348
6349 /**
6350  * i40e_handle_mdd_event
6351  * @pf: pointer to the pf structure
6352  *
6353  * Called from the MDD irq handler to identify possibly malicious vfs
6354  **/
6355 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6356 {
6357         struct i40e_hw *hw = &pf->hw;
6358         bool mdd_detected = false;
6359         bool pf_mdd_detected = false;
6360         struct i40e_vf *vf;
6361         u32 reg;
6362         int i;
6363
6364         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6365                 return;
6366
6367         /* find what triggered the MDD event */
6368         reg = rd32(hw, I40E_GL_MDET_TX);
6369         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6370                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6371                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6372                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6373                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6374                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6375                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6376                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6377                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6378                                 pf->hw.func_caps.base_queue;
6379                 if (netif_msg_tx_err(pf))
6380                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d pf number 0x%02x vf number 0x%02x\n",
6381                                  event, queue, pf_num, vf_num);
6382                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6383                 mdd_detected = true;
6384         }
6385         reg = rd32(hw, I40E_GL_MDET_RX);
6386         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6387                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6388                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6389                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6390                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6391                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6392                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6393                                 pf->hw.func_caps.base_queue;
6394                 if (netif_msg_rx_err(pf))
6395                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6396                                  event, queue, func);
6397                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6398                 mdd_detected = true;
6399         }
6400
6401         if (mdd_detected) {
6402                 reg = rd32(hw, I40E_PF_MDET_TX);
6403                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6404                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6405                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6406                         pf_mdd_detected = true;
6407                 }
6408                 reg = rd32(hw, I40E_PF_MDET_RX);
6409                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6410                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6411                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6412                         pf_mdd_detected = true;
6413                 }
6414                 /* Queue belongs to the PF, initiate a reset */
6415                 if (pf_mdd_detected) {
6416                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6417                         i40e_service_event_schedule(pf);
6418                 }
6419         }
6420
6421         /* see if one of the VFs needs its hand slapped */
6422         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6423                 vf = &(pf->vf[i]);
6424                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6425                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6426                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6427                         vf->num_mdd_events++;
6428                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6429                                  i);
6430                 }
6431
6432                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6433                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6434                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6435                         vf->num_mdd_events++;
6436                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6437                                  i);
6438                 }
6439
6440                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6441                         dev_info(&pf->pdev->dev,
6442                                  "Too many MDD events on VF %d, disabled\n", i);
6443                         dev_info(&pf->pdev->dev,
6444                                  "Use PF Control I/F to re-enable the VF\n");
6445                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6446                 }
6447         }
6448
6449         /* re-enable mdd interrupt cause */
6450         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6451         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6452         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6453         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6454         i40e_flush(hw);
6455 }
6456
6457 #ifdef CONFIG_I40E_VXLAN
6458 /**
6459  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6460  * @pf: board private structure
6461  **/
6462 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6463 {
6464         struct i40e_hw *hw = &pf->hw;
6465         i40e_status ret;
6466         u8 filter_index;
6467         __be16 port;
6468         int i;
6469
6470         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6471                 return;
6472
6473         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6474
6475         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6476                 if (pf->pending_vxlan_bitmap & (1 << i)) {
6477                         pf->pending_vxlan_bitmap &= ~(1 << i);
6478                         port = pf->vxlan_ports[i];
6479                         ret = port ?
6480                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
6481                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6482                                                      &filter_index, NULL)
6483                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
6484
6485                         if (ret) {
6486                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
6487                                          port ? "adding" : "deleting",
6488                                          ntohs(port), port ? i : i);
6489
6490                                 pf->vxlan_ports[i] = 0;
6491                         } else {
6492                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
6493                                          port ? "Added" : "Deleted",
6494                                          ntohs(port), port ? i : filter_index);
6495                         }
6496                 }
6497         }
6498 }
6499
6500 #endif
6501 /**
6502  * i40e_service_task - Run the driver's async subtasks
6503  * @work: pointer to work_struct containing our data
6504  **/
6505 static void i40e_service_task(struct work_struct *work)
6506 {
6507         struct i40e_pf *pf = container_of(work,
6508                                           struct i40e_pf,
6509                                           service_task);
6510         unsigned long start_time = jiffies;
6511
6512         /* don't bother with service tasks if a reset is in progress */
6513         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6514                 i40e_service_event_complete(pf);
6515                 return;
6516         }
6517
6518         i40e_reset_subtask(pf);
6519         i40e_handle_mdd_event(pf);
6520         i40e_vc_process_vflr_event(pf);
6521         i40e_watchdog_subtask(pf);
6522         i40e_fdir_reinit_subtask(pf);
6523         i40e_sync_filters_subtask(pf);
6524 #ifdef CONFIG_I40E_VXLAN
6525         i40e_sync_vxlan_filters_subtask(pf);
6526 #endif
6527         i40e_clean_adminq_subtask(pf);
6528
6529         i40e_service_event_complete(pf);
6530
6531         /* If the tasks have taken longer than one timer cycle or there
6532          * is more work to be done, reschedule the service task now
6533          * rather than wait for the timer to tick again.
6534          */
6535         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6536             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6537             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6538             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6539                 i40e_service_event_schedule(pf);
6540 }
6541
6542 /**
6543  * i40e_service_timer - timer callback
6544  * @data: pointer to PF struct
6545  **/
6546 static void i40e_service_timer(unsigned long data)
6547 {
6548         struct i40e_pf *pf = (struct i40e_pf *)data;
6549
6550         mod_timer(&pf->service_timer,
6551                   round_jiffies(jiffies + pf->service_timer_period));
6552         i40e_service_event_schedule(pf);
6553 }
6554
6555 /**
6556  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6557  * @vsi: the VSI being configured
6558  **/
6559 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6560 {
6561         struct i40e_pf *pf = vsi->back;
6562
6563         switch (vsi->type) {
6564         case I40E_VSI_MAIN:
6565                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6566                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6567                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6568                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6569                         vsi->num_q_vectors = pf->num_lan_msix;
6570                 else
6571                         vsi->num_q_vectors = 1;
6572
6573                 break;
6574
6575         case I40E_VSI_FDIR:
6576                 vsi->alloc_queue_pairs = 1;
6577                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6578                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6579                 vsi->num_q_vectors = 1;
6580                 break;
6581
6582         case I40E_VSI_VMDQ2:
6583                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6584                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6585                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6586                 vsi->num_q_vectors = pf->num_vmdq_msix;
6587                 break;
6588
6589         case I40E_VSI_SRIOV:
6590                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6591                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6592                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6593                 break;
6594
6595 #ifdef I40E_FCOE
6596         case I40E_VSI_FCOE:
6597                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6598                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6599                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6600                 vsi->num_q_vectors = pf->num_fcoe_msix;
6601                 break;
6602
6603 #endif /* I40E_FCOE */
6604         default:
6605                 WARN_ON(1);
6606                 return -ENODATA;
6607         }
6608
6609         return 0;
6610 }
6611
6612 /**
6613  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6614  * @type: VSI pointer
6615  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6616  *
6617  * On error: returns error code (negative)
6618  * On success: returns 0
6619  **/
6620 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6621 {
6622         int size;
6623         int ret = 0;
6624
6625         /* allocate memory for both Tx and Rx ring pointers */
6626         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6627         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6628         if (!vsi->tx_rings)
6629                 return -ENOMEM;
6630         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6631
6632         if (alloc_qvectors) {
6633                 /* allocate memory for q_vector pointers */
6634                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6635                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6636                 if (!vsi->q_vectors) {
6637                         ret = -ENOMEM;
6638                         goto err_vectors;
6639                 }
6640         }
6641         return ret;
6642
6643 err_vectors:
6644         kfree(vsi->tx_rings);
6645         return ret;
6646 }
6647
6648 /**
6649  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6650  * @pf: board private structure
6651  * @type: type of VSI
6652  *
6653  * On error: returns error code (negative)
6654  * On success: returns vsi index in PF (positive)
6655  **/
6656 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6657 {
6658         int ret = -ENODEV;
6659         struct i40e_vsi *vsi;
6660         int vsi_idx;
6661         int i;
6662
6663         /* Need to protect the allocation of the VSIs at the PF level */
6664         mutex_lock(&pf->switch_mutex);
6665
6666         /* VSI list may be fragmented if VSI creation/destruction has
6667          * been happening.  We can afford to do a quick scan to look
6668          * for any free VSIs in the list.
6669          *
6670          * find next empty vsi slot, looping back around if necessary
6671          */
6672         i = pf->next_vsi;
6673         while (i < pf->num_alloc_vsi && pf->vsi[i])
6674                 i++;
6675         if (i >= pf->num_alloc_vsi) {
6676                 i = 0;
6677                 while (i < pf->next_vsi && pf->vsi[i])
6678                         i++;
6679         }
6680
6681         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6682                 vsi_idx = i;             /* Found one! */
6683         } else {
6684                 ret = -ENODEV;
6685                 goto unlock_pf;  /* out of VSI slots! */
6686         }
6687         pf->next_vsi = ++i;
6688
6689         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6690         if (!vsi) {
6691                 ret = -ENOMEM;
6692                 goto unlock_pf;
6693         }
6694         vsi->type = type;
6695         vsi->back = pf;
6696         set_bit(__I40E_DOWN, &vsi->state);
6697         vsi->flags = 0;
6698         vsi->idx = vsi_idx;
6699         vsi->rx_itr_setting = pf->rx_itr_default;
6700         vsi->tx_itr_setting = pf->tx_itr_default;
6701         vsi->netdev_registered = false;
6702         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6703         INIT_LIST_HEAD(&vsi->mac_filter_list);
6704         vsi->irqs_ready = false;
6705
6706         ret = i40e_set_num_rings_in_vsi(vsi);
6707         if (ret)
6708                 goto err_rings;
6709
6710         ret = i40e_vsi_alloc_arrays(vsi, true);
6711         if (ret)
6712                 goto err_rings;
6713
6714         /* Setup default MSIX irq handler for VSI */
6715         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6716
6717         pf->vsi[vsi_idx] = vsi;
6718         ret = vsi_idx;
6719         goto unlock_pf;
6720
6721 err_rings:
6722         pf->next_vsi = i - 1;
6723         kfree(vsi);
6724 unlock_pf:
6725         mutex_unlock(&pf->switch_mutex);
6726         return ret;
6727 }
6728
6729 /**
6730  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6731  * @type: VSI pointer
6732  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6733  *
6734  * On error: returns error code (negative)
6735  * On success: returns 0
6736  **/
6737 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6738 {
6739         /* free the ring and vector containers */
6740         if (free_qvectors) {
6741                 kfree(vsi->q_vectors);
6742                 vsi->q_vectors = NULL;
6743         }
6744         kfree(vsi->tx_rings);
6745         vsi->tx_rings = NULL;
6746         vsi->rx_rings = NULL;
6747 }
6748
6749 /**
6750  * i40e_vsi_clear - Deallocate the VSI provided
6751  * @vsi: the VSI being un-configured
6752  **/
6753 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6754 {
6755         struct i40e_pf *pf;
6756
6757         if (!vsi)
6758                 return 0;
6759
6760         if (!vsi->back)
6761                 goto free_vsi;
6762         pf = vsi->back;
6763
6764         mutex_lock(&pf->switch_mutex);
6765         if (!pf->vsi[vsi->idx]) {
6766                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6767                         vsi->idx, vsi->idx, vsi, vsi->type);
6768                 goto unlock_vsi;
6769         }
6770
6771         if (pf->vsi[vsi->idx] != vsi) {
6772                 dev_err(&pf->pdev->dev,
6773                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6774                         pf->vsi[vsi->idx]->idx,
6775                         pf->vsi[vsi->idx],
6776                         pf->vsi[vsi->idx]->type,
6777                         vsi->idx, vsi, vsi->type);
6778                 goto unlock_vsi;
6779         }
6780
6781         /* updates the pf for this cleared vsi */
6782         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6783         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6784
6785         i40e_vsi_free_arrays(vsi, true);
6786
6787         pf->vsi[vsi->idx] = NULL;
6788         if (vsi->idx < pf->next_vsi)
6789                 pf->next_vsi = vsi->idx;
6790
6791 unlock_vsi:
6792         mutex_unlock(&pf->switch_mutex);
6793 free_vsi:
6794         kfree(vsi);
6795
6796         return 0;
6797 }
6798
6799 /**
6800  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6801  * @vsi: the VSI being cleaned
6802  **/
6803 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6804 {
6805         int i;
6806
6807         if (vsi->tx_rings && vsi->tx_rings[0]) {
6808                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6809                         kfree_rcu(vsi->tx_rings[i], rcu);
6810                         vsi->tx_rings[i] = NULL;
6811                         vsi->rx_rings[i] = NULL;
6812                 }
6813         }
6814 }
6815
6816 /**
6817  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6818  * @vsi: the VSI being configured
6819  **/
6820 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6821 {
6822         struct i40e_ring *tx_ring, *rx_ring;
6823         struct i40e_pf *pf = vsi->back;
6824         int i;
6825
6826         /* Set basic values in the rings to be used later during open() */
6827         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6828                 /* allocate space for both Tx and Rx in one shot */
6829                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6830                 if (!tx_ring)
6831                         goto err_out;
6832
6833                 tx_ring->queue_index = i;
6834                 tx_ring->reg_idx = vsi->base_queue + i;
6835                 tx_ring->ring_active = false;
6836                 tx_ring->vsi = vsi;
6837                 tx_ring->netdev = vsi->netdev;
6838                 tx_ring->dev = &pf->pdev->dev;
6839                 tx_ring->count = vsi->num_desc;
6840                 tx_ring->size = 0;
6841                 tx_ring->dcb_tc = 0;
6842                 vsi->tx_rings[i] = tx_ring;
6843
6844                 rx_ring = &tx_ring[1];
6845                 rx_ring->queue_index = i;
6846                 rx_ring->reg_idx = vsi->base_queue + i;
6847                 rx_ring->ring_active = false;
6848                 rx_ring->vsi = vsi;
6849                 rx_ring->netdev = vsi->netdev;
6850                 rx_ring->dev = &pf->pdev->dev;
6851                 rx_ring->count = vsi->num_desc;
6852                 rx_ring->size = 0;
6853                 rx_ring->dcb_tc = 0;
6854                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6855                         set_ring_16byte_desc_enabled(rx_ring);
6856                 else
6857                         clear_ring_16byte_desc_enabled(rx_ring);
6858                 vsi->rx_rings[i] = rx_ring;
6859         }
6860
6861         return 0;
6862
6863 err_out:
6864         i40e_vsi_clear_rings(vsi);
6865         return -ENOMEM;
6866 }
6867
6868 /**
6869  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6870  * @pf: board private structure
6871  * @vectors: the number of MSI-X vectors to request
6872  *
6873  * Returns the number of vectors reserved, or error
6874  **/
6875 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6876 {
6877         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6878                                         I40E_MIN_MSIX, vectors);
6879         if (vectors < 0) {
6880                 dev_info(&pf->pdev->dev,
6881                          "MSI-X vector reservation failed: %d\n", vectors);
6882                 vectors = 0;
6883         }
6884
6885         return vectors;
6886 }
6887
6888 /**
6889  * i40e_init_msix - Setup the MSIX capability
6890  * @pf: board private structure
6891  *
6892  * Work with the OS to set up the MSIX vectors needed.
6893  *
6894  * Returns 0 on success, negative on failure
6895  **/
6896 static int i40e_init_msix(struct i40e_pf *pf)
6897 {
6898         i40e_status err = 0;
6899         struct i40e_hw *hw = &pf->hw;
6900         int other_vecs = 0;
6901         int v_budget, i;
6902         int vec;
6903
6904         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6905                 return -ENODEV;
6906
6907         /* The number of vectors we'll request will be comprised of:
6908          *   - Add 1 for "other" cause for Admin Queue events, etc.
6909          *   - The number of LAN queue pairs
6910          *      - Queues being used for RSS.
6911          *              We don't need as many as max_rss_size vectors.
6912          *              use rss_size instead in the calculation since that
6913          *              is governed by number of cpus in the system.
6914          *      - assumes symmetric Tx/Rx pairing
6915          *   - The number of VMDq pairs
6916 #ifdef I40E_FCOE
6917          *   - The number of FCOE qps.
6918 #endif
6919          * Once we count this up, try the request.
6920          *
6921          * If we can't get what we want, we'll simplify to nearly nothing
6922          * and try again.  If that still fails, we punt.
6923          */
6924         pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
6925         pf->num_vmdq_msix = pf->num_vmdq_qps;
6926         other_vecs = 1;
6927         other_vecs += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6928         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6929                 other_vecs++;
6930
6931         /* Scale down if necessary, and the rings will share vectors */
6932         pf->num_lan_msix = min_t(int, pf->num_lan_msix,
6933                         (hw->func_caps.num_msix_vectors - other_vecs));
6934         v_budget = pf->num_lan_msix + other_vecs;
6935
6936 #ifdef I40E_FCOE
6937         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6938                 pf->num_fcoe_msix = pf->num_fcoe_qps;
6939                 v_budget += pf->num_fcoe_msix;
6940         }
6941 #endif
6942
6943         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6944                                    GFP_KERNEL);
6945         if (!pf->msix_entries)
6946                 return -ENOMEM;
6947
6948         for (i = 0; i < v_budget; i++)
6949                 pf->msix_entries[i].entry = i;
6950         vec = i40e_reserve_msix_vectors(pf, v_budget);
6951
6952         if (vec != v_budget) {
6953                 /* If we have limited resources, we will start with no vectors
6954                  * for the special features and then allocate vectors to some
6955                  * of these features based on the policy and at the end disable
6956                  * the features that did not get any vectors.
6957                  */
6958 #ifdef I40E_FCOE
6959                 pf->num_fcoe_qps = 0;
6960                 pf->num_fcoe_msix = 0;
6961 #endif
6962                 pf->num_vmdq_msix = 0;
6963         }
6964
6965         if (vec < I40E_MIN_MSIX) {
6966                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6967                 kfree(pf->msix_entries);
6968                 pf->msix_entries = NULL;
6969                 return -ENODEV;
6970
6971         } else if (vec == I40E_MIN_MSIX) {
6972                 /* Adjust for minimal MSIX use */
6973                 pf->num_vmdq_vsis = 0;
6974                 pf->num_vmdq_qps = 0;
6975                 pf->num_lan_qps = 1;
6976                 pf->num_lan_msix = 1;
6977
6978         } else if (vec != v_budget) {
6979                 /* reserve the misc vector */
6980                 vec--;
6981
6982                 /* Scale vector usage down */
6983                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
6984                 pf->num_vmdq_vsis = 1;
6985
6986                 /* partition out the remaining vectors */
6987                 switch (vec) {
6988                 case 2:
6989                         pf->num_lan_msix = 1;
6990                         break;
6991                 case 3:
6992 #ifdef I40E_FCOE
6993                         /* give one vector to FCoE */
6994                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6995                                 pf->num_lan_msix = 1;
6996                                 pf->num_fcoe_msix = 1;
6997                         }
6998 #else
6999                         pf->num_lan_msix = 2;
7000 #endif
7001                         break;
7002                 default:
7003 #ifdef I40E_FCOE
7004                         /* give one vector to FCoE */
7005                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7006                                 pf->num_fcoe_msix = 1;
7007                                 vec--;
7008                         }
7009 #endif
7010                         pf->num_lan_msix = min_t(int, (vec / 2),
7011                                                  pf->num_lan_qps);
7012                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
7013                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7014                         break;
7015                 }
7016         }
7017
7018         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7019             (pf->num_vmdq_msix == 0)) {
7020                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7021                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7022         }
7023 #ifdef I40E_FCOE
7024
7025         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7026                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7027                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7028         }
7029 #endif
7030         return err;
7031 }
7032
7033 /**
7034  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7035  * @vsi: the VSI being configured
7036  * @v_idx: index of the vector in the vsi struct
7037  *
7038  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7039  **/
7040 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7041 {
7042         struct i40e_q_vector *q_vector;
7043
7044         /* allocate q_vector */
7045         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7046         if (!q_vector)
7047                 return -ENOMEM;
7048
7049         q_vector->vsi = vsi;
7050         q_vector->v_idx = v_idx;
7051         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7052         if (vsi->netdev)
7053                 netif_napi_add(vsi->netdev, &q_vector->napi,
7054                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7055
7056         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7057         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7058
7059         /* tie q_vector and vsi together */
7060         vsi->q_vectors[v_idx] = q_vector;
7061
7062         return 0;
7063 }
7064
7065 /**
7066  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7067  * @vsi: the VSI being configured
7068  *
7069  * We allocate one q_vector per queue interrupt.  If allocation fails we
7070  * return -ENOMEM.
7071  **/
7072 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7073 {
7074         struct i40e_pf *pf = vsi->back;
7075         int v_idx, num_q_vectors;
7076         int err;
7077
7078         /* if not MSIX, give the one vector only to the LAN VSI */
7079         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7080                 num_q_vectors = vsi->num_q_vectors;
7081         else if (vsi == pf->vsi[pf->lan_vsi])
7082                 num_q_vectors = 1;
7083         else
7084                 return -EINVAL;
7085
7086         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7087                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7088                 if (err)
7089                         goto err_out;
7090         }
7091
7092         return 0;
7093
7094 err_out:
7095         while (v_idx--)
7096                 i40e_free_q_vector(vsi, v_idx);
7097
7098         return err;
7099 }
7100
7101 /**
7102  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7103  * @pf: board private structure to initialize
7104  **/
7105 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
7106 {
7107         int err = 0;
7108
7109         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7110                 err = i40e_init_msix(pf);
7111                 if (err) {
7112                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7113 #ifdef I40E_FCOE
7114                                        I40E_FLAG_FCOE_ENABLED   |
7115 #endif
7116                                        I40E_FLAG_RSS_ENABLED    |
7117                                        I40E_FLAG_DCB_CAPABLE    |
7118                                        I40E_FLAG_SRIOV_ENABLED  |
7119                                        I40E_FLAG_FD_SB_ENABLED  |
7120                                        I40E_FLAG_FD_ATR_ENABLED |
7121                                        I40E_FLAG_VMDQ_ENABLED);
7122
7123                         /* rework the queue expectations without MSIX */
7124                         i40e_determine_queue_usage(pf);
7125                 }
7126         }
7127
7128         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7129             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7130                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7131                 err = pci_enable_msi(pf->pdev);
7132                 if (err) {
7133                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
7134                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7135                 }
7136         }
7137
7138         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7139                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7140
7141         /* track first vector for misc interrupts */
7142         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
7143 }
7144
7145 /**
7146  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7147  * @pf: board private structure
7148  *
7149  * This sets up the handler for MSIX 0, which is used to manage the
7150  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7151  * when in MSI or Legacy interrupt mode.
7152  **/
7153 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7154 {
7155         struct i40e_hw *hw = &pf->hw;
7156         int err = 0;
7157
7158         /* Only request the irq if this is the first time through, and
7159          * not when we're rebuilding after a Reset
7160          */
7161         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7162                 err = request_irq(pf->msix_entries[0].vector,
7163                                   i40e_intr, 0, pf->int_name, pf);
7164                 if (err) {
7165                         dev_info(&pf->pdev->dev,
7166                                  "request_irq for %s failed: %d\n",
7167                                  pf->int_name, err);
7168                         return -EFAULT;
7169                 }
7170         }
7171
7172         i40e_enable_misc_int_causes(pf);
7173
7174         /* associate no queues to the misc vector */
7175         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7176         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7177
7178         i40e_flush(hw);
7179
7180         i40e_irq_dynamic_enable_icr0(pf);
7181
7182         return err;
7183 }
7184
7185 /**
7186  * i40e_config_rss - Prepare for RSS if used
7187  * @pf: board private structure
7188  **/
7189 static int i40e_config_rss(struct i40e_pf *pf)
7190 {
7191         u32 rss_key[I40E_PFQF_HKEY_MAX_INDEX + 1];
7192         struct i40e_hw *hw = &pf->hw;
7193         u32 lut = 0;
7194         int i, j;
7195         u64 hena;
7196         u32 reg_val;
7197
7198         netdev_rss_key_fill(rss_key, sizeof(rss_key));
7199         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7200                 wr32(hw, I40E_PFQF_HKEY(i), rss_key[i]);
7201
7202         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7203         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7204                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7205         hena |= I40E_DEFAULT_RSS_HENA;
7206         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7207         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7208
7209         /* Check capability and Set table size and register per hw expectation*/
7210         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7211         if (hw->func_caps.rss_table_size == 512) {
7212                 reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7213                 pf->rss_table_size = 512;
7214         } else {
7215                 pf->rss_table_size = 128;
7216                 reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7217         }
7218         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7219
7220         /* Populate the LUT with max no. of queues in round robin fashion */
7221         for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
7222
7223                 /* The assumption is that lan qp count will be the highest
7224                  * qp count for any PF VSI that needs RSS.
7225                  * If multiple VSIs need RSS support, all the qp counts
7226                  * for those VSIs should be a power of 2 for RSS to work.
7227                  * If LAN VSI is the only consumer for RSS then this requirement
7228                  * is not necessary.
7229                  */
7230                 if (j == pf->rss_size)
7231                         j = 0;
7232                 /* lut = 4-byte sliding window of 4 lut entries */
7233                 lut = (lut << 8) | (j &
7234                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
7235                 /* On i = 3, we have 4 entries in lut; write to the register */
7236                 if ((i & 3) == 3)
7237                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
7238         }
7239         i40e_flush(hw);
7240
7241         return 0;
7242 }
7243
7244 /**
7245  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7246  * @pf: board private structure
7247  * @queue_count: the requested queue count for rss.
7248  *
7249  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7250  * count which may be different from the requested queue count.
7251  **/
7252 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7253 {
7254         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7255                 return 0;
7256
7257         queue_count = min_t(int, queue_count, pf->rss_size_max);
7258
7259         if (queue_count != pf->rss_size) {
7260                 i40e_prep_for_reset(pf);
7261
7262                 pf->rss_size = queue_count;
7263
7264                 i40e_reset_and_rebuild(pf, true);
7265                 i40e_config_rss(pf);
7266         }
7267         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7268         return pf->rss_size;
7269 }
7270
7271 /**
7272  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7273  * @pf: board private structure
7274  **/
7275 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7276 {
7277         i40e_status status;
7278         bool min_valid, max_valid;
7279         u32 max_bw, min_bw;
7280
7281         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7282                                            &min_valid, &max_valid);
7283
7284         if (!status) {
7285                 if (min_valid)
7286                         pf->npar_min_bw = min_bw;
7287                 if (max_valid)
7288                         pf->npar_max_bw = max_bw;
7289         }
7290
7291         return status;
7292 }
7293
7294 /**
7295  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7296  * @pf: board private structure
7297  **/
7298 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7299 {
7300         struct i40e_aqc_configure_partition_bw_data bw_data;
7301         i40e_status status;
7302
7303         /* Set the valid bit for this pf */
7304         bw_data.pf_valid_bits = cpu_to_le16(1 << pf->hw.pf_id);
7305         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7306         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7307
7308         /* Set the new bandwidths */
7309         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7310
7311         return status;
7312 }
7313
7314 /**
7315  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7316  * @pf: board private structure
7317  **/
7318 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7319 {
7320         /* Commit temporary BW setting to permanent NVM image */
7321         enum i40e_admin_queue_err last_aq_status;
7322         i40e_status ret;
7323         u16 nvm_word;
7324
7325         if (pf->hw.partition_id != 1) {
7326                 dev_info(&pf->pdev->dev,
7327                          "Commit BW only works on partition 1! This is partition %d",
7328                          pf->hw.partition_id);
7329                 ret = I40E_NOT_SUPPORTED;
7330                 goto bw_commit_out;
7331         }
7332
7333         /* Acquire NVM for read access */
7334         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7335         last_aq_status = pf->hw.aq.asq_last_status;
7336         if (ret) {
7337                 dev_info(&pf->pdev->dev,
7338                          "Cannot acquire NVM for read access, err %d: aq_err %d\n",
7339                          ret, last_aq_status);
7340                 goto bw_commit_out;
7341         }
7342
7343         /* Read word 0x10 of NVM - SW compatibility word 1 */
7344         ret = i40e_aq_read_nvm(&pf->hw,
7345                                I40E_SR_NVM_CONTROL_WORD,
7346                                0x10, sizeof(nvm_word), &nvm_word,
7347                                false, NULL);
7348         /* Save off last admin queue command status before releasing
7349          * the NVM
7350          */
7351         last_aq_status = pf->hw.aq.asq_last_status;
7352         i40e_release_nvm(&pf->hw);
7353         if (ret) {
7354                 dev_info(&pf->pdev->dev, "NVM read error, err %d aq_err %d\n",
7355                          ret, last_aq_status);
7356                 goto bw_commit_out;
7357         }
7358
7359         /* Wait a bit for NVM release to complete */
7360         msleep(50);
7361
7362         /* Acquire NVM for write access */
7363         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7364         last_aq_status = pf->hw.aq.asq_last_status;
7365         if (ret) {
7366                 dev_info(&pf->pdev->dev,
7367                          "Cannot acquire NVM for write access, err %d: aq_err %d\n",
7368                          ret, last_aq_status);
7369                 goto bw_commit_out;
7370         }
7371         /* Write it back out unchanged to initiate update NVM,
7372          * which will force a write of the shadow (alt) RAM to
7373          * the NVM - thus storing the bandwidth values permanently.
7374          */
7375         ret = i40e_aq_update_nvm(&pf->hw,
7376                                  I40E_SR_NVM_CONTROL_WORD,
7377                                  0x10, sizeof(nvm_word),
7378                                  &nvm_word, true, NULL);
7379         /* Save off last admin queue command status before releasing
7380          * the NVM
7381          */
7382         last_aq_status = pf->hw.aq.asq_last_status;
7383         i40e_release_nvm(&pf->hw);
7384         if (ret)
7385                 dev_info(&pf->pdev->dev,
7386                          "BW settings NOT SAVED, err %d aq_err %d\n",
7387                          ret, last_aq_status);
7388 bw_commit_out:
7389
7390         return ret;
7391 }
7392
7393 /**
7394  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7395  * @pf: board private structure to initialize
7396  *
7397  * i40e_sw_init initializes the Adapter private data structure.
7398  * Fields are initialized based on PCI device information and
7399  * OS network device settings (MTU size).
7400  **/
7401 static int i40e_sw_init(struct i40e_pf *pf)
7402 {
7403         int err = 0;
7404         int size;
7405
7406         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7407                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7408         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7409         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7410                 if (I40E_DEBUG_USER & debug)
7411                         pf->hw.debug_mask = debug;
7412                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7413                                                 I40E_DEFAULT_MSG_ENABLE);
7414         }
7415
7416         /* Set default capability flags */
7417         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7418                     I40E_FLAG_MSI_ENABLED     |
7419                     I40E_FLAG_MSIX_ENABLED;
7420
7421         if (iommu_present(&pci_bus_type))
7422                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7423         else
7424                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7425
7426         /* Set default ITR */
7427         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7428         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7429
7430         /* Depending on PF configurations, it is possible that the RSS
7431          * maximum might end up larger than the available queues
7432          */
7433         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
7434         pf->rss_size = 1;
7435         pf->rss_size_max = min_t(int, pf->rss_size_max,
7436                                  pf->hw.func_caps.num_tx_qp);
7437         if (pf->hw.func_caps.rss) {
7438                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7439                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7440         }
7441
7442         /* MFP mode enabled */
7443         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
7444                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7445                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7446                 if (i40e_get_npar_bw_setting(pf))
7447                         dev_warn(&pf->pdev->dev,
7448                                  "Could not get NPAR bw settings\n");
7449                 else
7450                         dev_info(&pf->pdev->dev,
7451                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7452                                  pf->npar_min_bw, pf->npar_max_bw);
7453         }
7454
7455         /* FW/NVM is not yet fixed in this regard */
7456         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7457             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7458                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7459                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7460                 /* Setup a counter for fd_atr per pf */
7461                 pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
7462                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7463                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7464                         /* Setup a counter for fd_sb per pf */
7465                         pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
7466                 } else {
7467                         dev_info(&pf->pdev->dev,
7468                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7469                 }
7470                 pf->fdir_pf_filter_count =
7471                                  pf->hw.func_caps.fd_filters_guaranteed;
7472                 pf->hw.fdir_shared_filter_count =
7473                                  pf->hw.func_caps.fd_filters_best_effort;
7474         }
7475
7476         if (pf->hw.func_caps.vmdq) {
7477                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7478                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7479                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
7480         }
7481
7482 #ifdef I40E_FCOE
7483         err = i40e_init_pf_fcoe(pf);
7484         if (err)
7485                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7486
7487 #endif /* I40E_FCOE */
7488 #ifdef CONFIG_PCI_IOV
7489         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7490                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7491                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7492                 pf->num_req_vfs = min_t(int,
7493                                         pf->hw.func_caps.num_vfs,
7494                                         I40E_MAX_VF_COUNT);
7495         }
7496 #endif /* CONFIG_PCI_IOV */
7497         pf->eeprom_version = 0xDEAD;
7498         pf->lan_veb = I40E_NO_VEB;
7499         pf->lan_vsi = I40E_NO_VSI;
7500
7501         /* set up queue assignment tracking */
7502         size = sizeof(struct i40e_lump_tracking)
7503                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7504         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7505         if (!pf->qp_pile) {
7506                 err = -ENOMEM;
7507                 goto sw_init_done;
7508         }
7509         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7510         pf->qp_pile->search_hint = 0;
7511
7512         /* set up vector assignment tracking */
7513         size = sizeof(struct i40e_lump_tracking)
7514                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
7515         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7516         if (!pf->irq_pile) {
7517                 kfree(pf->qp_pile);
7518                 err = -ENOMEM;
7519                 goto sw_init_done;
7520         }
7521         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
7522         pf->irq_pile->search_hint = 0;
7523
7524         pf->tx_timeout_recovery_level = 1;
7525
7526         mutex_init(&pf->switch_mutex);
7527
7528 sw_init_done:
7529         return err;
7530 }
7531
7532 /**
7533  * i40e_set_ntuple - set the ntuple feature flag and take action
7534  * @pf: board private structure to initialize
7535  * @features: the feature set that the stack is suggesting
7536  *
7537  * returns a bool to indicate if reset needs to happen
7538  **/
7539 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7540 {
7541         bool need_reset = false;
7542
7543         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7544          * the state changed, we need to reset.
7545          */
7546         if (features & NETIF_F_NTUPLE) {
7547                 /* Enable filters and mark for reset */
7548                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7549                         need_reset = true;
7550                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7551         } else {
7552                 /* turn off filters, mark for reset and clear SW filter list */
7553                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7554                         need_reset = true;
7555                         i40e_fdir_filter_exit(pf);
7556                 }
7557                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7558                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7559                 /* reset fd counters */
7560                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7561                 pf->fdir_pf_active_filters = 0;
7562                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7563                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7564                 /* if ATR was auto disabled it can be re-enabled. */
7565                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
7566                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
7567                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
7568         }
7569         return need_reset;
7570 }
7571
7572 /**
7573  * i40e_set_features - set the netdev feature flags
7574  * @netdev: ptr to the netdev being adjusted
7575  * @features: the feature set that the stack is suggesting
7576  **/
7577 static int i40e_set_features(struct net_device *netdev,
7578                              netdev_features_t features)
7579 {
7580         struct i40e_netdev_priv *np = netdev_priv(netdev);
7581         struct i40e_vsi *vsi = np->vsi;
7582         struct i40e_pf *pf = vsi->back;
7583         bool need_reset;
7584
7585         if (features & NETIF_F_HW_VLAN_CTAG_RX)
7586                 i40e_vlan_stripping_enable(vsi);
7587         else
7588                 i40e_vlan_stripping_disable(vsi);
7589
7590         need_reset = i40e_set_ntuple(pf, features);
7591
7592         if (need_reset)
7593                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7594
7595         return 0;
7596 }
7597
7598 #ifdef CONFIG_I40E_VXLAN
7599 /**
7600  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
7601  * @pf: board private structure
7602  * @port: The UDP port to look up
7603  *
7604  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
7605  **/
7606 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
7607 {
7608         u8 i;
7609
7610         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7611                 if (pf->vxlan_ports[i] == port)
7612                         return i;
7613         }
7614
7615         return i;
7616 }
7617
7618 /**
7619  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
7620  * @netdev: This physical port's netdev
7621  * @sa_family: Socket Family that VXLAN is notifying us about
7622  * @port: New UDP port number that VXLAN started listening to
7623  **/
7624 static void i40e_add_vxlan_port(struct net_device *netdev,
7625                                 sa_family_t sa_family, __be16 port)
7626 {
7627         struct i40e_netdev_priv *np = netdev_priv(netdev);
7628         struct i40e_vsi *vsi = np->vsi;
7629         struct i40e_pf *pf = vsi->back;
7630         u8 next_idx;
7631         u8 idx;
7632
7633         if (sa_family == AF_INET6)
7634                 return;
7635
7636         idx = i40e_get_vxlan_port_idx(pf, port);
7637
7638         /* Check if port already exists */
7639         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7640                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
7641                 return;
7642         }
7643
7644         /* Now check if there is space to add the new port */
7645         next_idx = i40e_get_vxlan_port_idx(pf, 0);
7646
7647         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7648                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
7649                             ntohs(port));
7650                 return;
7651         }
7652
7653         /* New port: add it and mark its index in the bitmap */
7654         pf->vxlan_ports[next_idx] = port;
7655         pf->pending_vxlan_bitmap |= (1 << next_idx);
7656
7657         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7658 }
7659
7660 /**
7661  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
7662  * @netdev: This physical port's netdev
7663  * @sa_family: Socket Family that VXLAN is notifying us about
7664  * @port: UDP port number that VXLAN stopped listening to
7665  **/
7666 static void i40e_del_vxlan_port(struct net_device *netdev,
7667                                 sa_family_t sa_family, __be16 port)
7668 {
7669         struct i40e_netdev_priv *np = netdev_priv(netdev);
7670         struct i40e_vsi *vsi = np->vsi;
7671         struct i40e_pf *pf = vsi->back;
7672         u8 idx;
7673
7674         if (sa_family == AF_INET6)
7675                 return;
7676
7677         idx = i40e_get_vxlan_port_idx(pf, port);
7678
7679         /* Check if port already exists */
7680         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7681                 /* if port exists, set it to 0 (mark for deletion)
7682                  * and make it pending
7683                  */
7684                 pf->vxlan_ports[idx] = 0;
7685
7686                 pf->pending_vxlan_bitmap |= (1 << idx);
7687
7688                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7689         } else {
7690                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
7691                             ntohs(port));
7692         }
7693 }
7694
7695 #endif
7696 static int i40e_get_phys_port_id(struct net_device *netdev,
7697                                  struct netdev_phys_item_id *ppid)
7698 {
7699         struct i40e_netdev_priv *np = netdev_priv(netdev);
7700         struct i40e_pf *pf = np->vsi->back;
7701         struct i40e_hw *hw = &pf->hw;
7702
7703         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
7704                 return -EOPNOTSUPP;
7705
7706         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
7707         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
7708
7709         return 0;
7710 }
7711
7712 /**
7713  * i40e_ndo_fdb_add - add an entry to the hardware database
7714  * @ndm: the input from the stack
7715  * @tb: pointer to array of nladdr (unused)
7716  * @dev: the net device pointer
7717  * @addr: the MAC address entry being added
7718  * @flags: instructions from stack about fdb operation
7719  */
7720 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
7721                             struct net_device *dev,
7722                             const unsigned char *addr, u16 vid,
7723                             u16 flags)
7724 {
7725         struct i40e_netdev_priv *np = netdev_priv(dev);
7726         struct i40e_pf *pf = np->vsi->back;
7727         int err = 0;
7728
7729         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
7730                 return -EOPNOTSUPP;
7731
7732         if (vid) {
7733                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
7734                 return -EINVAL;
7735         }
7736
7737         /* Hardware does not support aging addresses so if a
7738          * ndm_state is given only allow permanent addresses
7739          */
7740         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
7741                 netdev_info(dev, "FDB only supports static addresses\n");
7742                 return -EINVAL;
7743         }
7744
7745         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
7746                 err = dev_uc_add_excl(dev, addr);
7747         else if (is_multicast_ether_addr(addr))
7748                 err = dev_mc_add_excl(dev, addr);
7749         else
7750                 err = -EINVAL;
7751
7752         /* Only return duplicate errors if NLM_F_EXCL is set */
7753         if (err == -EEXIST && !(flags & NLM_F_EXCL))
7754                 err = 0;
7755
7756         return err;
7757 }
7758
7759 #ifdef HAVE_BRIDGE_ATTRIBS
7760 /**
7761  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
7762  * @dev: the netdev being configured
7763  * @nlh: RTNL message
7764  *
7765  * Inserts a new hardware bridge if not already created and
7766  * enables the bridging mode requested (VEB or VEPA). If the
7767  * hardware bridge has already been inserted and the request
7768  * is to change the mode then that requires a PF reset to
7769  * allow rebuild of the components with required hardware
7770  * bridge mode enabled.
7771  **/
7772 static int i40e_ndo_bridge_setlink(struct net_device *dev,
7773                                    struct nlmsghdr *nlh)
7774 {
7775         struct i40e_netdev_priv *np = netdev_priv(dev);
7776         struct i40e_vsi *vsi = np->vsi;
7777         struct i40e_pf *pf = vsi->back;
7778         struct i40e_veb *veb = NULL;
7779         struct nlattr *attr, *br_spec;
7780         int i, rem;
7781
7782         /* Only for PF VSI for now */
7783         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
7784                 return -EOPNOTSUPP;
7785
7786         /* Find the HW bridge for PF VSI */
7787         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7788                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7789                         veb = pf->veb[i];
7790         }
7791
7792         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
7793
7794         nla_for_each_nested(attr, br_spec, rem) {
7795                 __u16 mode;
7796
7797                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
7798                         continue;
7799
7800                 mode = nla_get_u16(attr);
7801                 if ((mode != BRIDGE_MODE_VEPA) &&
7802                     (mode != BRIDGE_MODE_VEB))
7803                         return -EINVAL;
7804
7805                 /* Insert a new HW bridge */
7806                 if (!veb) {
7807                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
7808                                              vsi->tc_config.enabled_tc);
7809                         if (veb) {
7810                                 veb->bridge_mode = mode;
7811                                 i40e_config_bridge_mode(veb);
7812                         } else {
7813                                 /* No Bridge HW offload available */
7814                                 return -ENOENT;
7815                         }
7816                         break;
7817                 } else if (mode != veb->bridge_mode) {
7818                         /* Existing HW bridge but different mode needs reset */
7819                         veb->bridge_mode = mode;
7820                         i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7821                         break;
7822                 }
7823         }
7824
7825         return 0;
7826 }
7827
7828 /**
7829  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
7830  * @skb: skb buff
7831  * @pid: process id
7832  * @seq: RTNL message seq #
7833  * @dev: the netdev being configured
7834  * @filter_mask: unused
7835  *
7836  * Return the mode in which the hardware bridge is operating in
7837  * i.e VEB or VEPA.
7838  **/
7839 #ifdef HAVE_BRIDGE_FILTER
7840 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
7841                                    struct net_device *dev,
7842                                    u32 __always_unused filter_mask)
7843 #else
7844 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
7845                                    struct net_device *dev)
7846 #endif /* HAVE_BRIDGE_FILTER */
7847 {
7848         struct i40e_netdev_priv *np = netdev_priv(dev);
7849         struct i40e_vsi *vsi = np->vsi;
7850         struct i40e_pf *pf = vsi->back;
7851         struct i40e_veb *veb = NULL;
7852         int i;
7853
7854         /* Only for PF VSI for now */
7855         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
7856                 return -EOPNOTSUPP;
7857
7858         /* Find the HW bridge for the PF VSI */
7859         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7860                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7861                         veb = pf->veb[i];
7862         }
7863
7864         if (!veb)
7865                 return 0;
7866
7867         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode);
7868 }
7869 #endif /* HAVE_BRIDGE_ATTRIBS */
7870
7871 const struct net_device_ops i40e_netdev_ops = {
7872         .ndo_open               = i40e_open,
7873         .ndo_stop               = i40e_close,
7874         .ndo_start_xmit         = i40e_lan_xmit_frame,
7875         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
7876         .ndo_set_rx_mode        = i40e_set_rx_mode,
7877         .ndo_validate_addr      = eth_validate_addr,
7878         .ndo_set_mac_address    = i40e_set_mac,
7879         .ndo_change_mtu         = i40e_change_mtu,
7880         .ndo_do_ioctl           = i40e_ioctl,
7881         .ndo_tx_timeout         = i40e_tx_timeout,
7882         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
7883         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
7884 #ifdef CONFIG_NET_POLL_CONTROLLER
7885         .ndo_poll_controller    = i40e_netpoll,
7886 #endif
7887         .ndo_setup_tc           = i40e_setup_tc,
7888 #ifdef I40E_FCOE
7889         .ndo_fcoe_enable        = i40e_fcoe_enable,
7890         .ndo_fcoe_disable       = i40e_fcoe_disable,
7891 #endif
7892         .ndo_set_features       = i40e_set_features,
7893         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
7894         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
7895         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
7896         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
7897         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
7898         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
7899 #ifdef CONFIG_I40E_VXLAN
7900         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
7901         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
7902 #endif
7903         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
7904         .ndo_fdb_add            = i40e_ndo_fdb_add,
7905 #ifdef HAVE_BRIDGE_ATTRIBS
7906         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
7907         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
7908 #endif /* HAVE_BRIDGE_ATTRIBS */
7909 };
7910
7911 /**
7912  * i40e_config_netdev - Setup the netdev flags
7913  * @vsi: the VSI being configured
7914  *
7915  * Returns 0 on success, negative value on failure
7916  **/
7917 static int i40e_config_netdev(struct i40e_vsi *vsi)
7918 {
7919         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
7920         struct i40e_pf *pf = vsi->back;
7921         struct i40e_hw *hw = &pf->hw;
7922         struct i40e_netdev_priv *np;
7923         struct net_device *netdev;
7924         u8 mac_addr[ETH_ALEN];
7925         int etherdev_size;
7926
7927         etherdev_size = sizeof(struct i40e_netdev_priv);
7928         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
7929         if (!netdev)
7930                 return -ENOMEM;
7931
7932         vsi->netdev = netdev;
7933         np = netdev_priv(netdev);
7934         np->vsi = vsi;
7935
7936         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
7937                                   NETIF_F_GSO_UDP_TUNNEL |
7938                                   NETIF_F_TSO;
7939
7940         netdev->features = NETIF_F_SG                  |
7941                            NETIF_F_IP_CSUM             |
7942                            NETIF_F_SCTP_CSUM           |
7943                            NETIF_F_HIGHDMA             |
7944                            NETIF_F_GSO_UDP_TUNNEL      |
7945                            NETIF_F_HW_VLAN_CTAG_TX     |
7946                            NETIF_F_HW_VLAN_CTAG_RX     |
7947                            NETIF_F_HW_VLAN_CTAG_FILTER |
7948                            NETIF_F_IPV6_CSUM           |
7949                            NETIF_F_TSO                 |
7950                            NETIF_F_TSO_ECN             |
7951                            NETIF_F_TSO6                |
7952                            NETIF_F_RXCSUM              |
7953                            NETIF_F_RXHASH              |
7954                            0;
7955
7956         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
7957                 netdev->features |= NETIF_F_NTUPLE;
7958
7959         /* copy netdev features into list of user selectable features */
7960         netdev->hw_features |= netdev->features;
7961
7962         if (vsi->type == I40E_VSI_MAIN) {
7963                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
7964                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
7965                 /* The following steps are necessary to prevent reception
7966                  * of tagged packets - some older NVM configurations load a
7967                  * default a MAC-VLAN filter that accepts any tagged packet
7968                  * which must be replaced by a normal filter.
7969                  */
7970                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
7971                         i40e_add_filter(vsi, mac_addr,
7972                                         I40E_VLAN_ANY, false, true);
7973         } else {
7974                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
7975                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
7976                          pf->vsi[pf->lan_vsi]->netdev->name);
7977                 random_ether_addr(mac_addr);
7978                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
7979         }
7980         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
7981
7982         ether_addr_copy(netdev->dev_addr, mac_addr);
7983         ether_addr_copy(netdev->perm_addr, mac_addr);
7984         /* vlan gets same features (except vlan offload)
7985          * after any tweaks for specific VSI types
7986          */
7987         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
7988                                                      NETIF_F_HW_VLAN_CTAG_RX |
7989                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
7990         netdev->priv_flags |= IFF_UNICAST_FLT;
7991         netdev->priv_flags |= IFF_SUPP_NOFCS;
7992         /* Setup netdev TC information */
7993         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
7994
7995         netdev->netdev_ops = &i40e_netdev_ops;
7996         netdev->watchdog_timeo = 5 * HZ;
7997         i40e_set_ethtool_ops(netdev);
7998 #ifdef I40E_FCOE
7999         i40e_fcoe_config_netdev(netdev, vsi);
8000 #endif
8001
8002         return 0;
8003 }
8004
8005 /**
8006  * i40e_vsi_delete - Delete a VSI from the switch
8007  * @vsi: the VSI being removed
8008  *
8009  * Returns 0 on success, negative value on failure
8010  **/
8011 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8012 {
8013         /* remove default VSI is not allowed */
8014         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8015                 return;
8016
8017         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8018 }
8019
8020 /**
8021  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8022  * @vsi: the VSI being queried
8023  *
8024  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8025  **/
8026 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8027 {
8028         struct i40e_veb *veb;
8029         struct i40e_pf *pf = vsi->back;
8030
8031         /* Uplink is not a bridge so default to VEB */
8032         if (vsi->veb_idx == I40E_NO_VEB)
8033                 return 1;
8034
8035         veb = pf->veb[vsi->veb_idx];
8036         /* Uplink is a bridge in VEPA mode */
8037         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8038                 return 0;
8039
8040         /* Uplink is a bridge in VEB mode */
8041         return 1;
8042 }
8043
8044 /**
8045  * i40e_add_vsi - Add a VSI to the switch
8046  * @vsi: the VSI being configured
8047  *
8048  * This initializes a VSI context depending on the VSI type to be added and
8049  * passes it down to the add_vsi aq command.
8050  **/
8051 static int i40e_add_vsi(struct i40e_vsi *vsi)
8052 {
8053         int ret = -ENODEV;
8054         struct i40e_mac_filter *f, *ftmp;
8055         struct i40e_pf *pf = vsi->back;
8056         struct i40e_hw *hw = &pf->hw;
8057         struct i40e_vsi_context ctxt;
8058         u8 enabled_tc = 0x1; /* TC0 enabled */
8059         int f_count = 0;
8060
8061         memset(&ctxt, 0, sizeof(ctxt));
8062         switch (vsi->type) {
8063         case I40E_VSI_MAIN:
8064                 /* The PF's main VSI is already setup as part of the
8065                  * device initialization, so we'll not bother with
8066                  * the add_vsi call, but we will retrieve the current
8067                  * VSI context.
8068                  */
8069                 ctxt.seid = pf->main_vsi_seid;
8070                 ctxt.pf_num = pf->hw.pf_id;
8071                 ctxt.vf_num = 0;
8072                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8073                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8074                 if (ret) {
8075                         dev_info(&pf->pdev->dev,
8076                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
8077                                  ret, pf->hw.aq.asq_last_status);
8078                         return -ENOENT;
8079                 }
8080                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
8081                 vsi->info.valid_sections = 0;
8082
8083                 vsi->seid = ctxt.seid;
8084                 vsi->id = ctxt.vsi_number;
8085
8086                 enabled_tc = i40e_pf_get_tc_map(pf);
8087
8088                 /* MFP mode setup queue map and update VSI */
8089                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8090                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8091                         memset(&ctxt, 0, sizeof(ctxt));
8092                         ctxt.seid = pf->main_vsi_seid;
8093                         ctxt.pf_num = pf->hw.pf_id;
8094                         ctxt.vf_num = 0;
8095                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8096                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8097                         if (ret) {
8098                                 dev_info(&pf->pdev->dev,
8099                                          "update vsi failed, aq_err=%d\n",
8100                                          pf->hw.aq.asq_last_status);
8101                                 ret = -ENOENT;
8102                                 goto err;
8103                         }
8104                         /* update the local VSI info queue map */
8105                         i40e_vsi_update_queue_map(vsi, &ctxt);
8106                         vsi->info.valid_sections = 0;
8107                 } else {
8108                         /* Default/Main VSI is only enabled for TC0
8109                          * reconfigure it to enable all TCs that are
8110                          * available on the port in SFP mode.
8111                          * For MFP case the iSCSI PF would use this
8112                          * flow to enable LAN+iSCSI TC.
8113                          */
8114                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8115                         if (ret) {
8116                                 dev_info(&pf->pdev->dev,
8117                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
8118                                          enabled_tc, ret,
8119                                          pf->hw.aq.asq_last_status);
8120                                 ret = -ENOENT;
8121                         }
8122                 }
8123                 break;
8124
8125         case I40E_VSI_FDIR:
8126                 ctxt.pf_num = hw->pf_id;
8127                 ctxt.vf_num = 0;
8128                 ctxt.uplink_seid = vsi->uplink_seid;
8129                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8130                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8131                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8132                         ctxt.info.valid_sections |=
8133                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8134                         ctxt.info.switch_id =
8135                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8136                 }
8137                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8138                 break;
8139
8140         case I40E_VSI_VMDQ2:
8141                 ctxt.pf_num = hw->pf_id;
8142                 ctxt.vf_num = 0;
8143                 ctxt.uplink_seid = vsi->uplink_seid;
8144                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8145                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8146
8147                 /* This VSI is connected to VEB so the switch_id
8148                  * should be set to zero by default.
8149                  */
8150                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8151                         ctxt.info.valid_sections |=
8152                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8153                         ctxt.info.switch_id =
8154                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8155                 }
8156
8157                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8158                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8159                 break;
8160
8161         case I40E_VSI_SRIOV:
8162                 ctxt.pf_num = hw->pf_id;
8163                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8164                 ctxt.uplink_seid = vsi->uplink_seid;
8165                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8166                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8167
8168                 /* This VSI is connected to VEB so the switch_id
8169                  * should be set to zero by default.
8170                  */
8171                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8172                         ctxt.info.valid_sections |=
8173                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8174                         ctxt.info.switch_id =
8175                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8176                 }
8177
8178                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8179                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8180                 if (pf->vf[vsi->vf_id].spoofchk) {
8181                         ctxt.info.valid_sections |=
8182                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8183                         ctxt.info.sec_flags |=
8184                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8185                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8186                 }
8187                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8188                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8189                 break;
8190
8191 #ifdef I40E_FCOE
8192         case I40E_VSI_FCOE:
8193                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8194                 if (ret) {
8195                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8196                         return ret;
8197                 }
8198                 break;
8199
8200 #endif /* I40E_FCOE */
8201         default:
8202                 return -ENODEV;
8203         }
8204
8205         if (vsi->type != I40E_VSI_MAIN) {
8206                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8207                 if (ret) {
8208                         dev_info(&vsi->back->pdev->dev,
8209                                  "add vsi failed, aq_err=%d\n",
8210                                  vsi->back->hw.aq.asq_last_status);
8211                         ret = -ENOENT;
8212                         goto err;
8213                 }
8214                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
8215                 vsi->info.valid_sections = 0;
8216                 vsi->seid = ctxt.seid;
8217                 vsi->id = ctxt.vsi_number;
8218         }
8219
8220         /* If macvlan filters already exist, force them to get loaded */
8221         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8222                 f->changed = true;
8223                 f_count++;
8224
8225                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8226                         struct i40e_aqc_remove_macvlan_element_data element;
8227
8228                         memset(&element, 0, sizeof(element));
8229                         ether_addr_copy(element.mac_addr, f->macaddr);
8230                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8231                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8232                                                      &element, 1, NULL);
8233                         if (ret) {
8234                                 /* some older FW has a different default */
8235                                 element.flags |=
8236                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8237                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8238                                                        &element, 1, NULL);
8239                         }
8240
8241                         i40e_aq_mac_address_write(hw,
8242                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8243                                                   f->macaddr, NULL);
8244                 }
8245         }
8246         if (f_count) {
8247                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8248                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8249         }
8250
8251         /* Update VSI BW information */
8252         ret = i40e_vsi_get_bw_info(vsi);
8253         if (ret) {
8254                 dev_info(&pf->pdev->dev,
8255                          "couldn't get vsi bw info, err %d, aq_err %d\n",
8256                          ret, pf->hw.aq.asq_last_status);
8257                 /* VSI is already added so not tearing that up */
8258                 ret = 0;
8259         }
8260
8261 err:
8262         return ret;
8263 }
8264
8265 /**
8266  * i40e_vsi_release - Delete a VSI and free its resources
8267  * @vsi: the VSI being removed
8268  *
8269  * Returns 0 on success or < 0 on error
8270  **/
8271 int i40e_vsi_release(struct i40e_vsi *vsi)
8272 {
8273         struct i40e_mac_filter *f, *ftmp;
8274         struct i40e_veb *veb = NULL;
8275         struct i40e_pf *pf;
8276         u16 uplink_seid;
8277         int i, n;
8278
8279         pf = vsi->back;
8280
8281         /* release of a VEB-owner or last VSI is not allowed */
8282         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8283                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8284                          vsi->seid, vsi->uplink_seid);
8285                 return -ENODEV;
8286         }
8287         if (vsi == pf->vsi[pf->lan_vsi] &&
8288             !test_bit(__I40E_DOWN, &pf->state)) {
8289                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8290                 return -ENODEV;
8291         }
8292
8293         uplink_seid = vsi->uplink_seid;
8294         if (vsi->type != I40E_VSI_SRIOV) {
8295                 if (vsi->netdev_registered) {
8296                         vsi->netdev_registered = false;
8297                         if (vsi->netdev) {
8298                                 /* results in a call to i40e_close() */
8299                                 unregister_netdev(vsi->netdev);
8300                         }
8301                 } else {
8302                         i40e_vsi_close(vsi);
8303                 }
8304                 i40e_vsi_disable_irq(vsi);
8305         }
8306
8307         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8308                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8309                                 f->is_vf, f->is_netdev);
8310         i40e_sync_vsi_filters(vsi);
8311
8312         i40e_vsi_delete(vsi);
8313         i40e_vsi_free_q_vectors(vsi);
8314         if (vsi->netdev) {
8315                 free_netdev(vsi->netdev);
8316                 vsi->netdev = NULL;
8317         }
8318         i40e_vsi_clear_rings(vsi);
8319         i40e_vsi_clear(vsi);
8320
8321         /* If this was the last thing on the VEB, except for the
8322          * controlling VSI, remove the VEB, which puts the controlling
8323          * VSI onto the next level down in the switch.
8324          *
8325          * Well, okay, there's one more exception here: don't remove
8326          * the orphan VEBs yet.  We'll wait for an explicit remove request
8327          * from up the network stack.
8328          */
8329         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8330                 if (pf->vsi[i] &&
8331                     pf->vsi[i]->uplink_seid == uplink_seid &&
8332                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8333                         n++;      /* count the VSIs */
8334                 }
8335         }
8336         for (i = 0; i < I40E_MAX_VEB; i++) {
8337                 if (!pf->veb[i])
8338                         continue;
8339                 if (pf->veb[i]->uplink_seid == uplink_seid)
8340                         n++;     /* count the VEBs */
8341                 if (pf->veb[i]->seid == uplink_seid)
8342                         veb = pf->veb[i];
8343         }
8344         if (n == 0 && veb && veb->uplink_seid != 0)
8345                 i40e_veb_release(veb);
8346
8347         return 0;
8348 }
8349
8350 /**
8351  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8352  * @vsi: ptr to the VSI
8353  *
8354  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8355  * corresponding SW VSI structure and initializes num_queue_pairs for the
8356  * newly allocated VSI.
8357  *
8358  * Returns 0 on success or negative on failure
8359  **/
8360 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8361 {
8362         int ret = -ENOENT;
8363         struct i40e_pf *pf = vsi->back;
8364
8365         if (vsi->q_vectors[0]) {
8366                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8367                          vsi->seid);
8368                 return -EEXIST;
8369         }
8370
8371         if (vsi->base_vector) {
8372                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8373                          vsi->seid, vsi->base_vector);
8374                 return -EEXIST;
8375         }
8376
8377         ret = i40e_vsi_alloc_q_vectors(vsi);
8378         if (ret) {
8379                 dev_info(&pf->pdev->dev,
8380                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8381                          vsi->num_q_vectors, vsi->seid, ret);
8382                 vsi->num_q_vectors = 0;
8383                 goto vector_setup_out;
8384         }
8385
8386         if (vsi->num_q_vectors)
8387                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8388                                                  vsi->num_q_vectors, vsi->idx);
8389         if (vsi->base_vector < 0) {
8390                 dev_info(&pf->pdev->dev,
8391                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8392                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8393                 i40e_vsi_free_q_vectors(vsi);
8394                 ret = -ENOENT;
8395                 goto vector_setup_out;
8396         }
8397
8398 vector_setup_out:
8399         return ret;
8400 }
8401
8402 /**
8403  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8404  * @vsi: pointer to the vsi.
8405  *
8406  * This re-allocates a vsi's queue resources.
8407  *
8408  * Returns pointer to the successfully allocated and configured VSI sw struct
8409  * on success, otherwise returns NULL on failure.
8410  **/
8411 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8412 {
8413         struct i40e_pf *pf = vsi->back;
8414         u8 enabled_tc;
8415         int ret;
8416
8417         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8418         i40e_vsi_clear_rings(vsi);
8419
8420         i40e_vsi_free_arrays(vsi, false);
8421         i40e_set_num_rings_in_vsi(vsi);
8422         ret = i40e_vsi_alloc_arrays(vsi, false);
8423         if (ret)
8424                 goto err_vsi;
8425
8426         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8427         if (ret < 0) {
8428                 dev_info(&pf->pdev->dev,
8429                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8430                          vsi->alloc_queue_pairs, vsi->seid, ret);
8431                 goto err_vsi;
8432         }
8433         vsi->base_queue = ret;
8434
8435         /* Update the FW view of the VSI. Force a reset of TC and queue
8436          * layout configurations.
8437          */
8438         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8439         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8440         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8441         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8442
8443         /* assign it some queues */
8444         ret = i40e_alloc_rings(vsi);
8445         if (ret)
8446                 goto err_rings;
8447
8448         /* map all of the rings to the q_vectors */
8449         i40e_vsi_map_rings_to_vectors(vsi);
8450         return vsi;
8451
8452 err_rings:
8453         i40e_vsi_free_q_vectors(vsi);
8454         if (vsi->netdev_registered) {
8455                 vsi->netdev_registered = false;
8456                 unregister_netdev(vsi->netdev);
8457                 free_netdev(vsi->netdev);
8458                 vsi->netdev = NULL;
8459         }
8460         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8461 err_vsi:
8462         i40e_vsi_clear(vsi);
8463         return NULL;
8464 }
8465
8466 /**
8467  * i40e_vsi_setup - Set up a VSI by a given type
8468  * @pf: board private structure
8469  * @type: VSI type
8470  * @uplink_seid: the switch element to link to
8471  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8472  *
8473  * This allocates the sw VSI structure and its queue resources, then add a VSI
8474  * to the identified VEB.
8475  *
8476  * Returns pointer to the successfully allocated and configure VSI sw struct on
8477  * success, otherwise returns NULL on failure.
8478  **/
8479 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8480                                 u16 uplink_seid, u32 param1)
8481 {
8482         struct i40e_vsi *vsi = NULL;
8483         struct i40e_veb *veb = NULL;
8484         int ret, i;
8485         int v_idx;
8486
8487         /* The requested uplink_seid must be either
8488          *     - the PF's port seid
8489          *              no VEB is needed because this is the PF
8490          *              or this is a Flow Director special case VSI
8491          *     - seid of an existing VEB
8492          *     - seid of a VSI that owns an existing VEB
8493          *     - seid of a VSI that doesn't own a VEB
8494          *              a new VEB is created and the VSI becomes the owner
8495          *     - seid of the PF VSI, which is what creates the first VEB
8496          *              this is a special case of the previous
8497          *
8498          * Find which uplink_seid we were given and create a new VEB if needed
8499          */
8500         for (i = 0; i < I40E_MAX_VEB; i++) {
8501                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8502                         veb = pf->veb[i];
8503                         break;
8504                 }
8505         }
8506
8507         if (!veb && uplink_seid != pf->mac_seid) {
8508
8509                 for (i = 0; i < pf->num_alloc_vsi; i++) {
8510                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8511                                 vsi = pf->vsi[i];
8512                                 break;
8513                         }
8514                 }
8515                 if (!vsi) {
8516                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8517                                  uplink_seid);
8518                         return NULL;
8519                 }
8520
8521                 if (vsi->uplink_seid == pf->mac_seid)
8522                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8523                                              vsi->tc_config.enabled_tc);
8524                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8525                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8526                                              vsi->tc_config.enabled_tc);
8527                 if (veb) {
8528                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
8529                                 dev_info(&vsi->back->pdev->dev,
8530                                          "%s: New VSI creation error, uplink seid of LAN VSI expected.\n",
8531                                          __func__);
8532                                 return NULL;
8533                         }
8534                         i40e_config_bridge_mode(veb);
8535                 }
8536                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8537                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8538                                 veb = pf->veb[i];
8539                 }
8540                 if (!veb) {
8541                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
8542                         return NULL;
8543                 }
8544
8545                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8546                 uplink_seid = veb->seid;
8547         }
8548
8549         /* get vsi sw struct */
8550         v_idx = i40e_vsi_mem_alloc(pf, type);
8551         if (v_idx < 0)
8552                 goto err_alloc;
8553         vsi = pf->vsi[v_idx];
8554         if (!vsi)
8555                 goto err_alloc;
8556         vsi->type = type;
8557         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
8558
8559         if (type == I40E_VSI_MAIN)
8560                 pf->lan_vsi = v_idx;
8561         else if (type == I40E_VSI_SRIOV)
8562                 vsi->vf_id = param1;
8563         /* assign it some queues */
8564         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
8565                                 vsi->idx);
8566         if (ret < 0) {
8567                 dev_info(&pf->pdev->dev,
8568                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8569                          vsi->alloc_queue_pairs, vsi->seid, ret);
8570                 goto err_vsi;
8571         }
8572         vsi->base_queue = ret;
8573
8574         /* get a VSI from the hardware */
8575         vsi->uplink_seid = uplink_seid;
8576         ret = i40e_add_vsi(vsi);
8577         if (ret)
8578                 goto err_vsi;
8579
8580         switch (vsi->type) {
8581         /* setup the netdev if needed */
8582         case I40E_VSI_MAIN:
8583         case I40E_VSI_VMDQ2:
8584         case I40E_VSI_FCOE:
8585                 ret = i40e_config_netdev(vsi);
8586                 if (ret)
8587                         goto err_netdev;
8588                 ret = register_netdev(vsi->netdev);
8589                 if (ret)
8590                         goto err_netdev;
8591                 vsi->netdev_registered = true;
8592                 netif_carrier_off(vsi->netdev);
8593 #ifdef CONFIG_I40E_DCB
8594                 /* Setup DCB netlink interface */
8595                 i40e_dcbnl_setup(vsi);
8596 #endif /* CONFIG_I40E_DCB */
8597                 /* fall through */
8598
8599         case I40E_VSI_FDIR:
8600                 /* set up vectors and rings if needed */
8601                 ret = i40e_vsi_setup_vectors(vsi);
8602                 if (ret)
8603                         goto err_msix;
8604
8605                 ret = i40e_alloc_rings(vsi);
8606                 if (ret)
8607                         goto err_rings;
8608
8609                 /* map all of the rings to the q_vectors */
8610                 i40e_vsi_map_rings_to_vectors(vsi);
8611
8612                 i40e_vsi_reset_stats(vsi);
8613                 break;
8614
8615         default:
8616                 /* no netdev or rings for the other VSI types */
8617                 break;
8618         }
8619
8620         return vsi;
8621
8622 err_rings:
8623         i40e_vsi_free_q_vectors(vsi);
8624 err_msix:
8625         if (vsi->netdev_registered) {
8626                 vsi->netdev_registered = false;
8627                 unregister_netdev(vsi->netdev);
8628                 free_netdev(vsi->netdev);
8629                 vsi->netdev = NULL;
8630         }
8631 err_netdev:
8632         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8633 err_vsi:
8634         i40e_vsi_clear(vsi);
8635 err_alloc:
8636         return NULL;
8637 }
8638
8639 /**
8640  * i40e_veb_get_bw_info - Query VEB BW information
8641  * @veb: the veb to query
8642  *
8643  * Query the Tx scheduler BW configuration data for given VEB
8644  **/
8645 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
8646 {
8647         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
8648         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
8649         struct i40e_pf *pf = veb->pf;
8650         struct i40e_hw *hw = &pf->hw;
8651         u32 tc_bw_max;
8652         int ret = 0;
8653         int i;
8654
8655         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
8656                                                   &bw_data, NULL);
8657         if (ret) {
8658                 dev_info(&pf->pdev->dev,
8659                          "query veb bw config failed, aq_err=%d\n",
8660                          hw->aq.asq_last_status);
8661                 goto out;
8662         }
8663
8664         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
8665                                                    &ets_data, NULL);
8666         if (ret) {
8667                 dev_info(&pf->pdev->dev,
8668                          "query veb bw ets config failed, aq_err=%d\n",
8669                          hw->aq.asq_last_status);
8670                 goto out;
8671         }
8672
8673         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
8674         veb->bw_max_quanta = ets_data.tc_bw_max;
8675         veb->is_abs_credits = bw_data.absolute_credits_enable;
8676         veb->enabled_tc = ets_data.tc_valid_bits;
8677         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
8678                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
8679         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
8680                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
8681                 veb->bw_tc_limit_credits[i] =
8682                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
8683                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
8684         }
8685
8686 out:
8687         return ret;
8688 }
8689
8690 /**
8691  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
8692  * @pf: board private structure
8693  *
8694  * On error: returns error code (negative)
8695  * On success: returns vsi index in PF (positive)
8696  **/
8697 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
8698 {
8699         int ret = -ENOENT;
8700         struct i40e_veb *veb;
8701         int i;
8702
8703         /* Need to protect the allocation of switch elements at the PF level */
8704         mutex_lock(&pf->switch_mutex);
8705
8706         /* VEB list may be fragmented if VEB creation/destruction has
8707          * been happening.  We can afford to do a quick scan to look
8708          * for any free slots in the list.
8709          *
8710          * find next empty veb slot, looping back around if necessary
8711          */
8712         i = 0;
8713         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
8714                 i++;
8715         if (i >= I40E_MAX_VEB) {
8716                 ret = -ENOMEM;
8717                 goto err_alloc_veb;  /* out of VEB slots! */
8718         }
8719
8720         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
8721         if (!veb) {
8722                 ret = -ENOMEM;
8723                 goto err_alloc_veb;
8724         }
8725         veb->pf = pf;
8726         veb->idx = i;
8727         veb->enabled_tc = 1;
8728
8729         pf->veb[i] = veb;
8730         ret = i;
8731 err_alloc_veb:
8732         mutex_unlock(&pf->switch_mutex);
8733         return ret;
8734 }
8735
8736 /**
8737  * i40e_switch_branch_release - Delete a branch of the switch tree
8738  * @branch: where to start deleting
8739  *
8740  * This uses recursion to find the tips of the branch to be
8741  * removed, deleting until we get back to and can delete this VEB.
8742  **/
8743 static void i40e_switch_branch_release(struct i40e_veb *branch)
8744 {
8745         struct i40e_pf *pf = branch->pf;
8746         u16 branch_seid = branch->seid;
8747         u16 veb_idx = branch->idx;
8748         int i;
8749
8750         /* release any VEBs on this VEB - RECURSION */
8751         for (i = 0; i < I40E_MAX_VEB; i++) {
8752                 if (!pf->veb[i])
8753                         continue;
8754                 if (pf->veb[i]->uplink_seid == branch->seid)
8755                         i40e_switch_branch_release(pf->veb[i]);
8756         }
8757
8758         /* Release the VSIs on this VEB, but not the owner VSI.
8759          *
8760          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
8761          *       the VEB itself, so don't use (*branch) after this loop.
8762          */
8763         for (i = 0; i < pf->num_alloc_vsi; i++) {
8764                 if (!pf->vsi[i])
8765                         continue;
8766                 if (pf->vsi[i]->uplink_seid == branch_seid &&
8767                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8768                         i40e_vsi_release(pf->vsi[i]);
8769                 }
8770         }
8771
8772         /* There's one corner case where the VEB might not have been
8773          * removed, so double check it here and remove it if needed.
8774          * This case happens if the veb was created from the debugfs
8775          * commands and no VSIs were added to it.
8776          */
8777         if (pf->veb[veb_idx])
8778                 i40e_veb_release(pf->veb[veb_idx]);
8779 }
8780
8781 /**
8782  * i40e_veb_clear - remove veb struct
8783  * @veb: the veb to remove
8784  **/
8785 static void i40e_veb_clear(struct i40e_veb *veb)
8786 {
8787         if (!veb)
8788                 return;
8789
8790         if (veb->pf) {
8791                 struct i40e_pf *pf = veb->pf;
8792
8793                 mutex_lock(&pf->switch_mutex);
8794                 if (pf->veb[veb->idx] == veb)
8795                         pf->veb[veb->idx] = NULL;
8796                 mutex_unlock(&pf->switch_mutex);
8797         }
8798
8799         kfree(veb);
8800 }
8801
8802 /**
8803  * i40e_veb_release - Delete a VEB and free its resources
8804  * @veb: the VEB being removed
8805  **/
8806 void i40e_veb_release(struct i40e_veb *veb)
8807 {
8808         struct i40e_vsi *vsi = NULL;
8809         struct i40e_pf *pf;
8810         int i, n = 0;
8811
8812         pf = veb->pf;
8813
8814         /* find the remaining VSI and check for extras */
8815         for (i = 0; i < pf->num_alloc_vsi; i++) {
8816                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
8817                         n++;
8818                         vsi = pf->vsi[i];
8819                 }
8820         }
8821         if (n != 1) {
8822                 dev_info(&pf->pdev->dev,
8823                          "can't remove VEB %d with %d VSIs left\n",
8824                          veb->seid, n);
8825                 return;
8826         }
8827
8828         /* move the remaining VSI to uplink veb */
8829         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
8830         if (veb->uplink_seid) {
8831                 vsi->uplink_seid = veb->uplink_seid;
8832                 if (veb->uplink_seid == pf->mac_seid)
8833                         vsi->veb_idx = I40E_NO_VEB;
8834                 else
8835                         vsi->veb_idx = veb->veb_idx;
8836         } else {
8837                 /* floating VEB */
8838                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
8839                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
8840         }
8841
8842         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
8843         i40e_veb_clear(veb);
8844 }
8845
8846 /**
8847  * i40e_add_veb - create the VEB in the switch
8848  * @veb: the VEB to be instantiated
8849  * @vsi: the controlling VSI
8850  **/
8851 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
8852 {
8853         bool is_default = false;
8854         bool is_cloud = false;
8855         int ret;
8856
8857         /* get a VEB from the hardware */
8858         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
8859                               veb->enabled_tc, is_default,
8860                               is_cloud, &veb->seid, NULL);
8861         if (ret) {
8862                 dev_info(&veb->pf->pdev->dev,
8863                          "couldn't add VEB, err %d, aq_err %d\n",
8864                          ret, veb->pf->hw.aq.asq_last_status);
8865                 return -EPERM;
8866         }
8867
8868         /* get statistics counter */
8869         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
8870                                          &veb->stats_idx, NULL, NULL, NULL);
8871         if (ret) {
8872                 dev_info(&veb->pf->pdev->dev,
8873                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
8874                          ret, veb->pf->hw.aq.asq_last_status);
8875                 return -EPERM;
8876         }
8877         ret = i40e_veb_get_bw_info(veb);
8878         if (ret) {
8879                 dev_info(&veb->pf->pdev->dev,
8880                          "couldn't get VEB bw info, err %d, aq_err %d\n",
8881                          ret, veb->pf->hw.aq.asq_last_status);
8882                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
8883                 return -ENOENT;
8884         }
8885
8886         vsi->uplink_seid = veb->seid;
8887         vsi->veb_idx = veb->idx;
8888         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8889
8890         return 0;
8891 }
8892
8893 /**
8894  * i40e_veb_setup - Set up a VEB
8895  * @pf: board private structure
8896  * @flags: VEB setup flags
8897  * @uplink_seid: the switch element to link to
8898  * @vsi_seid: the initial VSI seid
8899  * @enabled_tc: Enabled TC bit-map
8900  *
8901  * This allocates the sw VEB structure and links it into the switch
8902  * It is possible and legal for this to be a duplicate of an already
8903  * existing VEB.  It is also possible for both uplink and vsi seids
8904  * to be zero, in order to create a floating VEB.
8905  *
8906  * Returns pointer to the successfully allocated VEB sw struct on
8907  * success, otherwise returns NULL on failure.
8908  **/
8909 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
8910                                 u16 uplink_seid, u16 vsi_seid,
8911                                 u8 enabled_tc)
8912 {
8913         struct i40e_veb *veb, *uplink_veb = NULL;
8914         int vsi_idx, veb_idx;
8915         int ret;
8916
8917         /* if one seid is 0, the other must be 0 to create a floating relay */
8918         if ((uplink_seid == 0 || vsi_seid == 0) &&
8919             (uplink_seid + vsi_seid != 0)) {
8920                 dev_info(&pf->pdev->dev,
8921                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
8922                          uplink_seid, vsi_seid);
8923                 return NULL;
8924         }
8925
8926         /* make sure there is such a vsi and uplink */
8927         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
8928                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
8929                         break;
8930         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
8931                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
8932                          vsi_seid);
8933                 return NULL;
8934         }
8935
8936         if (uplink_seid && uplink_seid != pf->mac_seid) {
8937                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
8938                         if (pf->veb[veb_idx] &&
8939                             pf->veb[veb_idx]->seid == uplink_seid) {
8940                                 uplink_veb = pf->veb[veb_idx];
8941                                 break;
8942                         }
8943                 }
8944                 if (!uplink_veb) {
8945                         dev_info(&pf->pdev->dev,
8946                                  "uplink seid %d not found\n", uplink_seid);
8947                         return NULL;
8948                 }
8949         }
8950
8951         /* get veb sw struct */
8952         veb_idx = i40e_veb_mem_alloc(pf);
8953         if (veb_idx < 0)
8954                 goto err_alloc;
8955         veb = pf->veb[veb_idx];
8956         veb->flags = flags;
8957         veb->uplink_seid = uplink_seid;
8958         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
8959         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
8960
8961         /* create the VEB in the switch */
8962         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
8963         if (ret)
8964                 goto err_veb;
8965         if (vsi_idx == pf->lan_vsi)
8966                 pf->lan_veb = veb->idx;
8967
8968         return veb;
8969
8970 err_veb:
8971         i40e_veb_clear(veb);
8972 err_alloc:
8973         return NULL;
8974 }
8975
8976 /**
8977  * i40e_setup_pf_switch_element - set pf vars based on switch type
8978  * @pf: board private structure
8979  * @ele: element we are building info from
8980  * @num_reported: total number of elements
8981  * @printconfig: should we print the contents
8982  *
8983  * helper function to assist in extracting a few useful SEID values.
8984  **/
8985 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
8986                                 struct i40e_aqc_switch_config_element_resp *ele,
8987                                 u16 num_reported, bool printconfig)
8988 {
8989         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
8990         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
8991         u8 element_type = ele->element_type;
8992         u16 seid = le16_to_cpu(ele->seid);
8993
8994         if (printconfig)
8995                 dev_info(&pf->pdev->dev,
8996                          "type=%d seid=%d uplink=%d downlink=%d\n",
8997                          element_type, seid, uplink_seid, downlink_seid);
8998
8999         switch (element_type) {
9000         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9001                 pf->mac_seid = seid;
9002                 break;
9003         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9004                 /* Main VEB? */
9005                 if (uplink_seid != pf->mac_seid)
9006                         break;
9007                 if (pf->lan_veb == I40E_NO_VEB) {
9008                         int v;
9009
9010                         /* find existing or else empty VEB */
9011                         for (v = 0; v < I40E_MAX_VEB; v++) {
9012                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9013                                         pf->lan_veb = v;
9014                                         break;
9015                                 }
9016                         }
9017                         if (pf->lan_veb == I40E_NO_VEB) {
9018                                 v = i40e_veb_mem_alloc(pf);
9019                                 if (v < 0)
9020                                         break;
9021                                 pf->lan_veb = v;
9022                         }
9023                 }
9024
9025                 pf->veb[pf->lan_veb]->seid = seid;
9026                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9027                 pf->veb[pf->lan_veb]->pf = pf;
9028                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9029                 break;
9030         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9031                 if (num_reported != 1)
9032                         break;
9033                 /* This is immediately after a reset so we can assume this is
9034                  * the PF's VSI
9035                  */
9036                 pf->mac_seid = uplink_seid;
9037                 pf->pf_seid = downlink_seid;
9038                 pf->main_vsi_seid = seid;
9039                 if (printconfig)
9040                         dev_info(&pf->pdev->dev,
9041                                  "pf_seid=%d main_vsi_seid=%d\n",
9042                                  pf->pf_seid, pf->main_vsi_seid);
9043                 break;
9044         case I40E_SWITCH_ELEMENT_TYPE_PF:
9045         case I40E_SWITCH_ELEMENT_TYPE_VF:
9046         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9047         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9048         case I40E_SWITCH_ELEMENT_TYPE_PE:
9049         case I40E_SWITCH_ELEMENT_TYPE_PA:
9050                 /* ignore these for now */
9051                 break;
9052         default:
9053                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9054                          element_type, seid);
9055                 break;
9056         }
9057 }
9058
9059 /**
9060  * i40e_fetch_switch_configuration - Get switch config from firmware
9061  * @pf: board private structure
9062  * @printconfig: should we print the contents
9063  *
9064  * Get the current switch configuration from the device and
9065  * extract a few useful SEID values.
9066  **/
9067 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9068 {
9069         struct i40e_aqc_get_switch_config_resp *sw_config;
9070         u16 next_seid = 0;
9071         int ret = 0;
9072         u8 *aq_buf;
9073         int i;
9074
9075         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9076         if (!aq_buf)
9077                 return -ENOMEM;
9078
9079         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9080         do {
9081                 u16 num_reported, num_total;
9082
9083                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9084                                                 I40E_AQ_LARGE_BUF,
9085                                                 &next_seid, NULL);
9086                 if (ret) {
9087                         dev_info(&pf->pdev->dev,
9088                                  "get switch config failed %d aq_err=%x\n",
9089                                  ret, pf->hw.aq.asq_last_status);
9090                         kfree(aq_buf);
9091                         return -ENOENT;
9092                 }
9093
9094                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9095                 num_total = le16_to_cpu(sw_config->header.num_total);
9096
9097                 if (printconfig)
9098                         dev_info(&pf->pdev->dev,
9099                                  "header: %d reported %d total\n",
9100                                  num_reported, num_total);
9101
9102                 for (i = 0; i < num_reported; i++) {
9103                         struct i40e_aqc_switch_config_element_resp *ele =
9104                                 &sw_config->element[i];
9105
9106                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9107                                                      printconfig);
9108                 }
9109         } while (next_seid != 0);
9110
9111         kfree(aq_buf);
9112         return ret;
9113 }
9114
9115 /**
9116  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9117  * @pf: board private structure
9118  * @reinit: if the Main VSI needs to re-initialized.
9119  *
9120  * Returns 0 on success, negative value on failure
9121  **/
9122 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9123 {
9124         int ret;
9125
9126         /* find out what's out there already */
9127         ret = i40e_fetch_switch_configuration(pf, false);
9128         if (ret) {
9129                 dev_info(&pf->pdev->dev,
9130                          "couldn't fetch switch config, err %d, aq_err %d\n",
9131                          ret, pf->hw.aq.asq_last_status);
9132                 return ret;
9133         }
9134         i40e_pf_reset_stats(pf);
9135
9136         /* first time setup */
9137         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9138                 struct i40e_vsi *vsi = NULL;
9139                 u16 uplink_seid;
9140
9141                 /* Set up the PF VSI associated with the PF's main VSI
9142                  * that is already in the HW switch
9143                  */
9144                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9145                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9146                 else
9147                         uplink_seid = pf->mac_seid;
9148                 if (pf->lan_vsi == I40E_NO_VSI)
9149                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9150                 else if (reinit)
9151                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9152                 if (!vsi) {
9153                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9154                         i40e_fdir_teardown(pf);
9155                         return -EAGAIN;
9156                 }
9157         } else {
9158                 /* force a reset of TC and queue layout configurations */
9159                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9160                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9161                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9162                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9163         }
9164         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9165
9166         i40e_fdir_sb_setup(pf);
9167
9168         /* Setup static PF queue filter control settings */
9169         ret = i40e_setup_pf_filter_control(pf);
9170         if (ret) {
9171                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9172                          ret);
9173                 /* Failure here should not stop continuing other steps */
9174         }
9175
9176         /* enable RSS in the HW, even for only one queue, as the stack can use
9177          * the hash
9178          */
9179         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9180                 i40e_config_rss(pf);
9181
9182         /* fill in link information and enable LSE reporting */
9183         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9184         i40e_link_event(pf);
9185
9186         /* Initialize user-specific link properties */
9187         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9188                                   I40E_AQ_AN_COMPLETED) ? true : false);
9189
9190         /* fill in link information and enable LSE reporting */
9191         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9192         i40e_link_event(pf);
9193
9194         /* Initialize user-specific link properties */
9195         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9196                                   I40E_AQ_AN_COMPLETED) ? true : false);
9197
9198         i40e_ptp_init(pf);
9199
9200         return ret;
9201 }
9202
9203 /**
9204  * i40e_determine_queue_usage - Work out queue distribution
9205  * @pf: board private structure
9206  **/
9207 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9208 {
9209         int queues_left;
9210
9211         pf->num_lan_qps = 0;
9212 #ifdef I40E_FCOE
9213         pf->num_fcoe_qps = 0;
9214 #endif
9215
9216         /* Find the max queues to be put into basic use.  We'll always be
9217          * using TC0, whether or not DCB is running, and TC0 will get the
9218          * big RSS set.
9219          */
9220         queues_left = pf->hw.func_caps.num_tx_qp;
9221
9222         if ((queues_left == 1) ||
9223             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9224                 /* one qp for PF, no queues for anything else */
9225                 queues_left = 0;
9226                 pf->rss_size = pf->num_lan_qps = 1;
9227
9228                 /* make sure all the fancies are disabled */
9229                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9230 #ifdef I40E_FCOE
9231                                I40E_FLAG_FCOE_ENABLED   |
9232 #endif
9233                                I40E_FLAG_FD_SB_ENABLED  |
9234                                I40E_FLAG_FD_ATR_ENABLED |
9235                                I40E_FLAG_DCB_CAPABLE    |
9236                                I40E_FLAG_SRIOV_ENABLED  |
9237                                I40E_FLAG_VMDQ_ENABLED);
9238         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
9239                                   I40E_FLAG_FD_SB_ENABLED |
9240                                   I40E_FLAG_FD_ATR_ENABLED |
9241                                   I40E_FLAG_DCB_CAPABLE))) {
9242                 /* one qp for PF */
9243                 pf->rss_size = pf->num_lan_qps = 1;
9244                 queues_left -= pf->num_lan_qps;
9245
9246                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9247 #ifdef I40E_FCOE
9248                                I40E_FLAG_FCOE_ENABLED   |
9249 #endif
9250                                I40E_FLAG_FD_SB_ENABLED  |
9251                                I40E_FLAG_FD_ATR_ENABLED |
9252                                I40E_FLAG_DCB_ENABLED    |
9253                                I40E_FLAG_VMDQ_ENABLED);
9254         } else {
9255                 /* Not enough queues for all TCs */
9256                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9257                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9258                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9259                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
9260                 }
9261                 pf->num_lan_qps = pf->rss_size_max;
9262                 queues_left -= pf->num_lan_qps;
9263         }
9264
9265 #ifdef I40E_FCOE
9266         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
9267                 if (I40E_DEFAULT_FCOE <= queues_left) {
9268                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
9269                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
9270                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
9271                 } else {
9272                         pf->num_fcoe_qps = 0;
9273                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
9274                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9275                 }
9276
9277                 queues_left -= pf->num_fcoe_qps;
9278         }
9279
9280 #endif
9281         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9282                 if (queues_left > 1) {
9283                         queues_left -= 1; /* save 1 queue for FD */
9284                 } else {
9285                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9286                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9287                 }
9288         }
9289
9290         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9291             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9292                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9293                                         (queues_left / pf->num_vf_qps));
9294                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9295         }
9296
9297         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9298             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9299                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9300                                           (queues_left / pf->num_vmdq_qps));
9301                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9302         }
9303
9304         pf->queues_left = queues_left;
9305 #ifdef I40E_FCOE
9306         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9307 #endif
9308 }
9309
9310 /**
9311  * i40e_setup_pf_filter_control - Setup PF static filter control
9312  * @pf: PF to be setup
9313  *
9314  * i40e_setup_pf_filter_control sets up a pf's initial filter control
9315  * settings. If PE/FCoE are enabled then it will also set the per PF
9316  * based filter sizes required for them. It also enables Flow director,
9317  * ethertype and macvlan type filter settings for the pf.
9318  *
9319  * Returns 0 on success, negative on failure
9320  **/
9321 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9322 {
9323         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9324
9325         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9326
9327         /* Flow Director is enabled */
9328         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9329                 settings->enable_fdir = true;
9330
9331         /* Ethtype and MACVLAN filters enabled for PF */
9332         settings->enable_ethtype = true;
9333         settings->enable_macvlan = true;
9334
9335         if (i40e_set_filter_control(&pf->hw, settings))
9336                 return -ENOENT;
9337
9338         return 0;
9339 }
9340
9341 #define INFO_STRING_LEN 255
9342 static void i40e_print_features(struct i40e_pf *pf)
9343 {
9344         struct i40e_hw *hw = &pf->hw;
9345         char *buf, *string;
9346
9347         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9348         if (!string) {
9349                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9350                 return;
9351         }
9352
9353         buf = string;
9354
9355         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9356 #ifdef CONFIG_PCI_IOV
9357         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9358 #endif
9359         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9360                        pf->hw.func_caps.num_vsis,
9361                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9362                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9363
9364         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9365                 buf += sprintf(buf, "RSS ");
9366         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9367                 buf += sprintf(buf, "FD_ATR ");
9368         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9369                 buf += sprintf(buf, "FD_SB ");
9370                 buf += sprintf(buf, "NTUPLE ");
9371         }
9372         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9373                 buf += sprintf(buf, "DCB ");
9374         if (pf->flags & I40E_FLAG_PTP)
9375                 buf += sprintf(buf, "PTP ");
9376 #ifdef I40E_FCOE
9377         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9378                 buf += sprintf(buf, "FCOE ");
9379 #endif
9380
9381         BUG_ON(buf > (string + INFO_STRING_LEN));
9382         dev_info(&pf->pdev->dev, "%s\n", string);
9383         kfree(string);
9384 }
9385
9386 /**
9387  * i40e_probe - Device initialization routine
9388  * @pdev: PCI device information struct
9389  * @ent: entry in i40e_pci_tbl
9390  *
9391  * i40e_probe initializes a pf identified by a pci_dev structure.
9392  * The OS initialization, configuring of the pf private structure,
9393  * and a hardware reset occur.
9394  *
9395  * Returns 0 on success, negative on failure
9396  **/
9397 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9398 {
9399         struct i40e_aq_get_phy_abilities_resp abilities;
9400         struct i40e_pf *pf;
9401         struct i40e_hw *hw;
9402         static u16 pfs_found;
9403         u16 link_status;
9404         int err = 0;
9405         u32 len;
9406         u32 i;
9407
9408         err = pci_enable_device_mem(pdev);
9409         if (err)
9410                 return err;
9411
9412         /* set up for high or low dma */
9413         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9414         if (err) {
9415                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9416                 if (err) {
9417                         dev_err(&pdev->dev,
9418                                 "DMA configuration failed: 0x%x\n", err);
9419                         goto err_dma;
9420                 }
9421         }
9422
9423         /* set up pci connections */
9424         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9425                                            IORESOURCE_MEM), i40e_driver_name);
9426         if (err) {
9427                 dev_info(&pdev->dev,
9428                          "pci_request_selected_regions failed %d\n", err);
9429                 goto err_pci_reg;
9430         }
9431
9432         pci_enable_pcie_error_reporting(pdev);
9433         pci_set_master(pdev);
9434
9435         /* Now that we have a PCI connection, we need to do the
9436          * low level device setup.  This is primarily setting up
9437          * the Admin Queue structures and then querying for the
9438          * device's current profile information.
9439          */
9440         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9441         if (!pf) {
9442                 err = -ENOMEM;
9443                 goto err_pf_alloc;
9444         }
9445         pf->next_vsi = 0;
9446         pf->pdev = pdev;
9447         set_bit(__I40E_DOWN, &pf->state);
9448
9449         hw = &pf->hw;
9450         hw->back = pf;
9451         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
9452                               pci_resource_len(pdev, 0));
9453         if (!hw->hw_addr) {
9454                 err = -EIO;
9455                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9456                          (unsigned int)pci_resource_start(pdev, 0),
9457                          (unsigned int)pci_resource_len(pdev, 0), err);
9458                 goto err_ioremap;
9459         }
9460         hw->vendor_id = pdev->vendor;
9461         hw->device_id = pdev->device;
9462         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
9463         hw->subsystem_vendor_id = pdev->subsystem_vendor;
9464         hw->subsystem_device_id = pdev->subsystem_device;
9465         hw->bus.device = PCI_SLOT(pdev->devfn);
9466         hw->bus.func = PCI_FUNC(pdev->devfn);
9467         pf->instance = pfs_found;
9468
9469         if (debug != -1) {
9470                 pf->msg_enable = pf->hw.debug_mask;
9471                 pf->msg_enable = debug;
9472         }
9473
9474         /* do a special CORER for clearing PXE mode once at init */
9475         if (hw->revision_id == 0 &&
9476             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
9477                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
9478                 i40e_flush(hw);
9479                 msleep(200);
9480                 pf->corer_count++;
9481
9482                 i40e_clear_pxe_mode(hw);
9483         }
9484
9485         /* Reset here to make sure all is clean and to define PF 'n' */
9486         i40e_clear_hw(hw);
9487         err = i40e_pf_reset(hw);
9488         if (err) {
9489                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
9490                 goto err_pf_reset;
9491         }
9492         pf->pfr_count++;
9493
9494         hw->aq.num_arq_entries = I40E_AQ_LEN;
9495         hw->aq.num_asq_entries = I40E_AQ_LEN;
9496         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9497         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9498         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
9499
9500         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
9501                  "%s-%s:misc",
9502                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
9503
9504         err = i40e_init_shared_code(hw);
9505         if (err) {
9506                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
9507                 goto err_pf_reset;
9508         }
9509
9510         /* set up a default setting for link flow control */
9511         pf->hw.fc.requested_mode = I40E_FC_NONE;
9512
9513         err = i40e_init_adminq(hw);
9514         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
9515         if (err) {
9516                 dev_info(&pdev->dev,
9517                          "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");
9518                 goto err_pf_reset;
9519         }
9520
9521         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
9522             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
9523                 dev_info(&pdev->dev,
9524                          "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");
9525         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
9526                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
9527                 dev_info(&pdev->dev,
9528                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
9529
9530
9531         i40e_verify_eeprom(pf);
9532
9533         /* Rev 0 hardware was never productized */
9534         if (hw->revision_id < 1)
9535                 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");
9536
9537         i40e_clear_pxe_mode(hw);
9538         err = i40e_get_capabilities(pf);
9539         if (err)
9540                 goto err_adminq_setup;
9541
9542         err = i40e_sw_init(pf);
9543         if (err) {
9544                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
9545                 goto err_sw_init;
9546         }
9547
9548         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
9549                                 hw->func_caps.num_rx_qp,
9550                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
9551         if (err) {
9552                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
9553                 goto err_init_lan_hmc;
9554         }
9555
9556         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
9557         if (err) {
9558                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
9559                 err = -ENOENT;
9560                 goto err_configure_lan_hmc;
9561         }
9562
9563         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
9564          * Ignore error return codes because if it was already disabled via
9565          * hardware settings this will fail
9566          */
9567         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
9568             (pf->hw.aq.fw_maj_ver < 4)) {
9569                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
9570                 i40e_aq_stop_lldp(hw, true, NULL);
9571         }
9572
9573         i40e_get_mac_addr(hw, hw->mac.addr);
9574         if (!is_valid_ether_addr(hw->mac.addr)) {
9575                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
9576                 err = -EIO;
9577                 goto err_mac_addr;
9578         }
9579         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
9580         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
9581         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
9582         if (is_valid_ether_addr(hw->mac.port_addr))
9583                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
9584 #ifdef I40E_FCOE
9585         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
9586         if (err)
9587                 dev_info(&pdev->dev,
9588                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
9589         if (!is_valid_ether_addr(hw->mac.san_addr)) {
9590                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
9591                          hw->mac.san_addr);
9592                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
9593         }
9594         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
9595 #endif /* I40E_FCOE */
9596
9597         pci_set_drvdata(pdev, pf);
9598         pci_save_state(pdev);
9599 #ifdef CONFIG_I40E_DCB
9600         err = i40e_init_pf_dcb(pf);
9601         if (err) {
9602                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
9603                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9604                 /* Continue without DCB enabled */
9605         }
9606 #endif /* CONFIG_I40E_DCB */
9607
9608         /* set up periodic task facility */
9609         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
9610         pf->service_timer_period = HZ;
9611
9612         INIT_WORK(&pf->service_task, i40e_service_task);
9613         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
9614         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
9615         pf->link_check_timeout = jiffies;
9616
9617         /* WoL defaults to disabled */
9618         pf->wol_en = false;
9619         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
9620
9621         /* set up the main switch operations */
9622         i40e_determine_queue_usage(pf);
9623         i40e_init_interrupt_scheme(pf);
9624
9625         /* The number of VSIs reported by the FW is the minimum guaranteed
9626          * to us; HW supports far more and we share the remaining pool with
9627          * the other PFs. We allocate space for more than the guarantee with
9628          * the understanding that we might not get them all later.
9629          */
9630         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
9631                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
9632         else
9633                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
9634
9635         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
9636         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
9637         pf->vsi = kzalloc(len, GFP_KERNEL);
9638         if (!pf->vsi) {
9639                 err = -ENOMEM;
9640                 goto err_switch_setup;
9641         }
9642
9643         err = i40e_setup_pf_switch(pf, false);
9644         if (err) {
9645                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
9646                 goto err_vsis;
9647         }
9648         /* if FDIR VSI was set up, start it now */
9649         for (i = 0; i < pf->num_alloc_vsi; i++) {
9650                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
9651                         i40e_vsi_open(pf->vsi[i]);
9652                         break;
9653                 }
9654         }
9655
9656         /* driver is only interested in link up/down and module qualification
9657          * reports from firmware
9658          */
9659         err = i40e_aq_set_phy_int_mask(&pf->hw,
9660                                        I40E_AQ_EVENT_LINK_UPDOWN |
9661                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
9662         if (err)
9663                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", err);
9664
9665         msleep(75);
9666         err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
9667         if (err) {
9668                 dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
9669                          pf->hw.aq.asq_last_status);
9670         }
9671
9672         /* The main driver is (mostly) up and happy. We need to set this state
9673          * before setting up the misc vector or we get a race and the vector
9674          * ends up disabled forever.
9675          */
9676         clear_bit(__I40E_DOWN, &pf->state);
9677
9678         /* In case of MSIX we are going to setup the misc vector right here
9679          * to handle admin queue events etc. In case of legacy and MSI
9680          * the misc functionality and queue processing is combined in
9681          * the same vector and that gets setup at open.
9682          */
9683         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9684                 err = i40e_setup_misc_vector(pf);
9685                 if (err) {
9686                         dev_info(&pdev->dev,
9687                                  "setup of misc vector failed: %d\n", err);
9688                         goto err_vsis;
9689                 }
9690         }
9691
9692 #ifdef CONFIG_PCI_IOV
9693         /* prep for VF support */
9694         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9695             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
9696             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
9697                 u32 val;
9698
9699                 /* disable link interrupts for VFs */
9700                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
9701                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
9702                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
9703                 i40e_flush(hw);
9704
9705                 if (pci_num_vf(pdev)) {
9706                         dev_info(&pdev->dev,
9707                                  "Active VFs found, allocating resources.\n");
9708                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
9709                         if (err)
9710                                 dev_info(&pdev->dev,
9711                                          "Error %d allocating resources for existing VFs\n",
9712                                          err);
9713                 }
9714         }
9715 #endif /* CONFIG_PCI_IOV */
9716
9717         pfs_found++;
9718
9719         i40e_dbg_pf_init(pf);
9720
9721         /* tell the firmware that we're starting */
9722         i40e_send_version(pf);
9723
9724         /* since everything's happy, start the service_task timer */
9725         mod_timer(&pf->service_timer,
9726                   round_jiffies(jiffies + pf->service_timer_period));
9727
9728 #ifdef I40E_FCOE
9729         /* create FCoE interface */
9730         i40e_fcoe_vsi_setup(pf);
9731
9732 #endif
9733         /* Get the negotiated link width and speed from PCI config space */
9734         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
9735
9736         i40e_set_pci_config_data(hw, link_status);
9737
9738         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
9739                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
9740                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
9741                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
9742                  "Unknown"),
9743                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
9744                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
9745                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
9746                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
9747                  "Unknown"));
9748
9749         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
9750             hw->bus.speed < i40e_bus_speed_8000) {
9751                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
9752                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
9753         }
9754
9755         /* get the requested speeds from the fw */
9756         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
9757         if (err)
9758                 dev_info(&pf->pdev->dev, "get phy abilities failed, aq_err %d, advertised speed settings may not be correct\n",
9759                          err);
9760         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
9761
9762         /* print a string summarizing features */
9763         i40e_print_features(pf);
9764
9765         return 0;
9766
9767         /* Unwind what we've done if something failed in the setup */
9768 err_vsis:
9769         set_bit(__I40E_DOWN, &pf->state);
9770         i40e_clear_interrupt_scheme(pf);
9771         kfree(pf->vsi);
9772 err_switch_setup:
9773         i40e_reset_interrupt_capability(pf);
9774         del_timer_sync(&pf->service_timer);
9775 err_mac_addr:
9776 err_configure_lan_hmc:
9777         (void)i40e_shutdown_lan_hmc(hw);
9778 err_init_lan_hmc:
9779         kfree(pf->qp_pile);
9780         kfree(pf->irq_pile);
9781 err_sw_init:
9782 err_adminq_setup:
9783         (void)i40e_shutdown_adminq(hw);
9784 err_pf_reset:
9785         iounmap(hw->hw_addr);
9786 err_ioremap:
9787         kfree(pf);
9788 err_pf_alloc:
9789         pci_disable_pcie_error_reporting(pdev);
9790         pci_release_selected_regions(pdev,
9791                                      pci_select_bars(pdev, IORESOURCE_MEM));
9792 err_pci_reg:
9793 err_dma:
9794         pci_disable_device(pdev);
9795         return err;
9796 }
9797
9798 /**
9799  * i40e_remove - Device removal routine
9800  * @pdev: PCI device information struct
9801  *
9802  * i40e_remove is called by the PCI subsystem to alert the driver
9803  * that is should release a PCI device.  This could be caused by a
9804  * Hot-Plug event, or because the driver is going to be removed from
9805  * memory.
9806  **/
9807 static void i40e_remove(struct pci_dev *pdev)
9808 {
9809         struct i40e_pf *pf = pci_get_drvdata(pdev);
9810         i40e_status ret_code;
9811         int i;
9812
9813         i40e_dbg_pf_exit(pf);
9814
9815         i40e_ptp_stop(pf);
9816
9817         /* no more scheduling of any task */
9818         set_bit(__I40E_DOWN, &pf->state);
9819         del_timer_sync(&pf->service_timer);
9820         cancel_work_sync(&pf->service_task);
9821
9822         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
9823                 i40e_free_vfs(pf);
9824                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
9825         }
9826
9827         i40e_fdir_teardown(pf);
9828
9829         /* If there is a switch structure or any orphans, remove them.
9830          * This will leave only the PF's VSI remaining.
9831          */
9832         for (i = 0; i < I40E_MAX_VEB; i++) {
9833                 if (!pf->veb[i])
9834                         continue;
9835
9836                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
9837                     pf->veb[i]->uplink_seid == 0)
9838                         i40e_switch_branch_release(pf->veb[i]);
9839         }
9840
9841         /* Now we can shutdown the PF's VSI, just before we kill
9842          * adminq and hmc.
9843          */
9844         if (pf->vsi[pf->lan_vsi])
9845                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
9846
9847         i40e_stop_misc_vector(pf);
9848         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9849                 synchronize_irq(pf->msix_entries[0].vector);
9850                 free_irq(pf->msix_entries[0].vector, pf);
9851         }
9852
9853         /* shutdown and destroy the HMC */
9854         if (pf->hw.hmc.hmc_obj) {
9855                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
9856                 if (ret_code)
9857                         dev_warn(&pdev->dev,
9858                                  "Failed to destroy the HMC resources: %d\n",
9859                                  ret_code);
9860         }
9861
9862         /* shutdown the adminq */
9863         ret_code = i40e_shutdown_adminq(&pf->hw);
9864         if (ret_code)
9865                 dev_warn(&pdev->dev,
9866                          "Failed to destroy the Admin Queue resources: %d\n",
9867                          ret_code);
9868
9869         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
9870         i40e_clear_interrupt_scheme(pf);
9871         for (i = 0; i < pf->num_alloc_vsi; i++) {
9872                 if (pf->vsi[i]) {
9873                         i40e_vsi_clear_rings(pf->vsi[i]);
9874                         i40e_vsi_clear(pf->vsi[i]);
9875                         pf->vsi[i] = NULL;
9876                 }
9877         }
9878
9879         for (i = 0; i < I40E_MAX_VEB; i++) {
9880                 kfree(pf->veb[i]);
9881                 pf->veb[i] = NULL;
9882         }
9883
9884         kfree(pf->qp_pile);
9885         kfree(pf->irq_pile);
9886         kfree(pf->vsi);
9887
9888         iounmap(pf->hw.hw_addr);
9889         kfree(pf);
9890         pci_release_selected_regions(pdev,
9891                                      pci_select_bars(pdev, IORESOURCE_MEM));
9892
9893         pci_disable_pcie_error_reporting(pdev);
9894         pci_disable_device(pdev);
9895 }
9896
9897 /**
9898  * i40e_pci_error_detected - warning that something funky happened in PCI land
9899  * @pdev: PCI device information struct
9900  *
9901  * Called to warn that something happened and the error handling steps
9902  * are in progress.  Allows the driver to quiesce things, be ready for
9903  * remediation.
9904  **/
9905 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
9906                                                 enum pci_channel_state error)
9907 {
9908         struct i40e_pf *pf = pci_get_drvdata(pdev);
9909
9910         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
9911
9912         /* shutdown all operations */
9913         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
9914                 rtnl_lock();
9915                 i40e_prep_for_reset(pf);
9916                 rtnl_unlock();
9917         }
9918
9919         /* Request a slot reset */
9920         return PCI_ERS_RESULT_NEED_RESET;
9921 }
9922
9923 /**
9924  * i40e_pci_error_slot_reset - a PCI slot reset just happened
9925  * @pdev: PCI device information struct
9926  *
9927  * Called to find if the driver can work with the device now that
9928  * the pci slot has been reset.  If a basic connection seems good
9929  * (registers are readable and have sane content) then return a
9930  * happy little PCI_ERS_RESULT_xxx.
9931  **/
9932 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
9933 {
9934         struct i40e_pf *pf = pci_get_drvdata(pdev);
9935         pci_ers_result_t result;
9936         int err;
9937         u32 reg;
9938
9939         dev_info(&pdev->dev, "%s\n", __func__);
9940         if (pci_enable_device_mem(pdev)) {
9941                 dev_info(&pdev->dev,
9942                          "Cannot re-enable PCI device after reset.\n");
9943                 result = PCI_ERS_RESULT_DISCONNECT;
9944         } else {
9945                 pci_set_master(pdev);
9946                 pci_restore_state(pdev);
9947                 pci_save_state(pdev);
9948                 pci_wake_from_d3(pdev, false);
9949
9950                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
9951                 if (reg == 0)
9952                         result = PCI_ERS_RESULT_RECOVERED;
9953                 else
9954                         result = PCI_ERS_RESULT_DISCONNECT;
9955         }
9956
9957         err = pci_cleanup_aer_uncorrect_error_status(pdev);
9958         if (err) {
9959                 dev_info(&pdev->dev,
9960                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
9961                          err);
9962                 /* non-fatal, continue */
9963         }
9964
9965         return result;
9966 }
9967
9968 /**
9969  * i40e_pci_error_resume - restart operations after PCI error recovery
9970  * @pdev: PCI device information struct
9971  *
9972  * Called to allow the driver to bring things back up after PCI error
9973  * and/or reset recovery has finished.
9974  **/
9975 static void i40e_pci_error_resume(struct pci_dev *pdev)
9976 {
9977         struct i40e_pf *pf = pci_get_drvdata(pdev);
9978
9979         dev_info(&pdev->dev, "%s\n", __func__);
9980         if (test_bit(__I40E_SUSPENDED, &pf->state))
9981                 return;
9982
9983         rtnl_lock();
9984         i40e_handle_reset_warning(pf);
9985         rtnl_lock();
9986 }
9987
9988 /**
9989  * i40e_shutdown - PCI callback for shutting down
9990  * @pdev: PCI device information struct
9991  **/
9992 static void i40e_shutdown(struct pci_dev *pdev)
9993 {
9994         struct i40e_pf *pf = pci_get_drvdata(pdev);
9995         struct i40e_hw *hw = &pf->hw;
9996
9997         set_bit(__I40E_SUSPENDED, &pf->state);
9998         set_bit(__I40E_DOWN, &pf->state);
9999         rtnl_lock();
10000         i40e_prep_for_reset(pf);
10001         rtnl_unlock();
10002
10003         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10004         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10005
10006         if (system_state == SYSTEM_POWER_OFF) {
10007                 pci_wake_from_d3(pdev, pf->wol_en);
10008                 pci_set_power_state(pdev, PCI_D3hot);
10009         }
10010 }
10011
10012 #ifdef CONFIG_PM
10013 /**
10014  * i40e_suspend - PCI callback for moving to D3
10015  * @pdev: PCI device information struct
10016  **/
10017 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10018 {
10019         struct i40e_pf *pf = pci_get_drvdata(pdev);
10020         struct i40e_hw *hw = &pf->hw;
10021
10022         set_bit(__I40E_SUSPENDED, &pf->state);
10023         set_bit(__I40E_DOWN, &pf->state);
10024         del_timer_sync(&pf->service_timer);
10025         cancel_work_sync(&pf->service_task);
10026         rtnl_lock();
10027         i40e_prep_for_reset(pf);
10028         rtnl_unlock();
10029
10030         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10031         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10032
10033         pci_wake_from_d3(pdev, pf->wol_en);
10034         pci_set_power_state(pdev, PCI_D3hot);
10035
10036         return 0;
10037 }
10038
10039 /**
10040  * i40e_resume - PCI callback for waking up from D3
10041  * @pdev: PCI device information struct
10042  **/
10043 static int i40e_resume(struct pci_dev *pdev)
10044 {
10045         struct i40e_pf *pf = pci_get_drvdata(pdev);
10046         u32 err;
10047
10048         pci_set_power_state(pdev, PCI_D0);
10049         pci_restore_state(pdev);
10050         /* pci_restore_state() clears dev->state_saves, so
10051          * call pci_save_state() again to restore it.
10052          */
10053         pci_save_state(pdev);
10054
10055         err = pci_enable_device_mem(pdev);
10056         if (err) {
10057                 dev_err(&pdev->dev,
10058                         "%s: Cannot enable PCI device from suspend\n",
10059                         __func__);
10060                 return err;
10061         }
10062         pci_set_master(pdev);
10063
10064         /* no wakeup events while running */
10065         pci_wake_from_d3(pdev, false);
10066
10067         /* handling the reset will rebuild the device state */
10068         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10069                 clear_bit(__I40E_DOWN, &pf->state);
10070                 rtnl_lock();
10071                 i40e_reset_and_rebuild(pf, false);
10072                 rtnl_unlock();
10073         }
10074
10075         return 0;
10076 }
10077
10078 #endif
10079 static const struct pci_error_handlers i40e_err_handler = {
10080         .error_detected = i40e_pci_error_detected,
10081         .slot_reset = i40e_pci_error_slot_reset,
10082         .resume = i40e_pci_error_resume,
10083 };
10084
10085 static struct pci_driver i40e_driver = {
10086         .name     = i40e_driver_name,
10087         .id_table = i40e_pci_tbl,
10088         .probe    = i40e_probe,
10089         .remove   = i40e_remove,
10090 #ifdef CONFIG_PM
10091         .suspend  = i40e_suspend,
10092         .resume   = i40e_resume,
10093 #endif
10094         .shutdown = i40e_shutdown,
10095         .err_handler = &i40e_err_handler,
10096         .sriov_configure = i40e_pci_sriov_configure,
10097 };
10098
10099 /**
10100  * i40e_init_module - Driver registration routine
10101  *
10102  * i40e_init_module is the first routine called when the driver is
10103  * loaded. All it does is register with the PCI subsystem.
10104  **/
10105 static int __init i40e_init_module(void)
10106 {
10107         pr_info("%s: %s - version %s\n", i40e_driver_name,
10108                 i40e_driver_string, i40e_driver_version_str);
10109         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10110
10111 #if IS_ENABLED(CONFIG_I40E_CONFIGFS_FS)
10112         i40e_configfs_init();
10113 #endif /* CONFIG_I40E_CONFIGFS_FS */
10114         i40e_dbg_init();
10115         return pci_register_driver(&i40e_driver);
10116 }
10117 module_init(i40e_init_module);
10118
10119 /**
10120  * i40e_exit_module - Driver exit cleanup routine
10121  *
10122  * i40e_exit_module is called just before the driver is removed
10123  * from memory.
10124  **/
10125 static void __exit i40e_exit_module(void)
10126 {
10127         pci_unregister_driver(&i40e_driver);
10128         i40e_dbg_exit();
10129 #if IS_ENABLED(CONFIG_I40E_CONFIGFS_FS)
10130         i40e_configfs_exit();
10131 #endif /* CONFIG_I40E_CONFIGFS_FS */
10132 }
10133 module_exit(i40e_exit_module);