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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2014 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 /* Local includes */
  28 #include "i40e.h"
  29 #include "i40e_diag.h"
  30 #ifdef CONFIG_I40E_VXLAN
  31 #include <net/vxlan.h>
  32 #endif
  33
  34 const char i40e_driver_name[] = "i40e";
  35 static const char i40e_driver_string[] =
  36                         "Intel(R) Ethernet Connection XL710 Network Driver";
  37
  38 #define DRV_KERN "-k"
  39
  40 #define DRV_VERSION_MAJOR 1
  41 #define DRV_VERSION_MINOR 2
  42 #define DRV_VERSION_BUILD 6
  43 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  44              __stringify(DRV_VERSION_MINOR) "." \
  45              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  46 const char i40e_driver_version_str[] = DRV_VERSION;
  47 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  48
  49 /* a bit of forward declarations */
  50 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  51 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  52 static int i40e_add_vsi(struct i40e_vsi *vsi);
  53 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  54 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  55 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  56 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  57 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  58 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  59 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  60
  61 /* i40e_pci_tbl - PCI Device ID Table
  62  *
  63  * Last entry must be all 0s
  64  *
  65  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  66  *   Class, Class Mask, private data (not used) }
  67  */
  68 static const struct pci_device_id i40e_pci_tbl[] = {
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  78         /* required last entry */
  79         {0, }
  80 };
  81 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  82
  83 #define I40E_MAX_VF_COUNT 128
  84 static int debug = -1;
  85 module_param(debug, int, 0);
  86 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  87
  88 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  89 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  90 MODULE_LICENSE("GPL");
  91 MODULE_VERSION(DRV_VERSION);
  92
  93 /**
  94  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  95  * @hw:   pointer to the HW structure
  96  * @mem:  ptr to mem struct to fill out
  97  * @size: size of memory requested
  98  * @alignment: what to align the allocation to
  99  **/
 100 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 101                             u64 size, u32 alignment)
 102 {
 103         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 104
 105         mem->size = ALIGN(size, alignment);
 106         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 107                                       &mem->pa, GFP_KERNEL);
 108         if (!mem->va)
 109                 return -ENOMEM;
 110
 111         return 0;
 112 }
 113
 114 /**
 115  * i40e_free_dma_mem_d - OS specific memory free for shared code
 116  * @hw:   pointer to the HW structure
 117  * @mem:  ptr to mem struct to free
 118  **/
 119 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 120 {
 121         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 122
 123         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 124         mem->va = NULL;
 125         mem->pa = 0;
 126         mem->size = 0;
 127
 128         return 0;
 129 }
 130
 131 /**
 132  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 133  * @hw:   pointer to the HW structure
 134  * @mem:  ptr to mem struct to fill out
 135  * @size: size of memory requested
 136  **/
 137 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 138                              u32 size)
 139 {
 140         mem->size = size;
 141         mem->va = kzalloc(size, GFP_KERNEL);
 142
 143         if (!mem->va)
 144                 return -ENOMEM;
 145
 146         return 0;
 147 }
 148
 149 /**
 150  * i40e_free_virt_mem_d - OS specific memory free for shared code
 151  * @hw:   pointer to the HW structure
 152  * @mem:  ptr to mem struct to free
 153  **/
 154 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 155 {
 156         /* it's ok to kfree a NULL pointer */
 157         kfree(mem->va);
 158         mem->va = NULL;
 159         mem->size = 0;
 160
 161         return 0;
 162 }
 163
 164 /**
 165  * i40e_get_lump - find a lump of free generic resource
 166  * @pf: board private structure
 167  * @pile: the pile of resource to search
 168  * @needed: the number of items needed
 169  * @id: an owner id to stick on the items assigned
 170  *
 171  * Returns the base item index of the lump, or negative for error
 172  *
 173  * The search_hint trick and lack of advanced fit-finding only work
 174  * because we're highly likely to have all the same size lump requests.
 175  * Linear search time and any fragmentation should be minimal.
 176  **/
 177 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 178                          u16 needed, u16 id)
 179 {
 180         int ret = -ENOMEM;
 181         int i, j;
 182
 183         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 184                 dev_info(&pf->pdev->dev,
 185                          "param err: pile=%p needed=%d id=0x%04x\n",
 186                          pile, needed, id);
 187                 return -EINVAL;
 188         }
 189
 190         /* start the linear search with an imperfect hint */
 191         i = pile->search_hint;
 192         while (i < pile->num_entries) {
 193                 /* skip already allocated entries */
 194                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 195                         i++;
 196                         continue;
 197                 }
 198
 199                 /* do we have enough in this lump? */
 200                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 201                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 202                                 break;
 203                 }
 204
 205                 if (j == needed) {
 206                         /* there was enough, so assign it to the requestor */
 207                         for (j = 0; j < needed; j++)
 208                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 209                         ret = i;
 210                         pile->search_hint = i + j;
 211                         break;
 212                 } else {
 213                         /* not enough, so skip over it and continue looking */
 214                         i += j;
 215                 }
 216         }
 217
 218         return ret;
 219 }
 220
 221 /**
 222  * i40e_put_lump - return a lump of generic resource
 223  * @pile: the pile of resource to search
 224  * @index: the base item index
 225  * @id: the owner id of the items assigned
 226  *
 227  * Returns the count of items in the lump
 228  **/
 229 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 230 {
 231         int valid_id = (id | I40E_PILE_VALID_BIT);
 232         int count = 0;
 233         int i;
 234
 235         if (!pile || index >= pile->num_entries)
 236                 return -EINVAL;
 237
 238         for (i = index;
 239              i < pile->num_entries && pile->list[i] == valid_id;
 240              i++) {
 241                 pile->list[i] = 0;
 242                 count++;
 243         }
 244
 245         if (count && index < pile->search_hint)
 246                 pile->search_hint = index;
 247
 248         return count;
 249 }
 250
 251 /**
 252  * i40e_service_event_schedule - Schedule the service task to wake up
 253  * @pf: board private structure
 254  *
 255  * If not already scheduled, this puts the task into the work queue
 256  **/
 257 static void i40e_service_event_schedule(struct i40e_pf *pf)
 258 {
 259         if (!test_bit(__I40E_DOWN, &pf->state) &&
 260             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 261             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 262                 schedule_work(&pf->service_task);
 263 }
 264
 265 /**
 266  * i40e_tx_timeout - Respond to a Tx Hang
 267  * @netdev: network interface device structure
 268  *
 269  * If any port has noticed a Tx timeout, it is likely that the whole
 270  * device is munged, not just the one netdev port, so go for the full
 271  * reset.
 272  **/
 273 #ifdef I40E_FCOE
 274 void i40e_tx_timeout(struct net_device *netdev)
 275 #else
 276 static void i40e_tx_timeout(struct net_device *netdev)
 277 #endif
 278 {
 279         struct i40e_netdev_priv *np = netdev_priv(netdev);
 280         struct i40e_vsi *vsi = np->vsi;
 281         struct i40e_pf *pf = vsi->back;
 282
 283         pf->tx_timeout_count++;
 284
 285         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 286                 pf->tx_timeout_recovery_level = 1;
 287         pf->tx_timeout_last_recovery = jiffies;
 288         netdev_info(netdev, "tx_timeout recovery level %d\n",
 289                     pf->tx_timeout_recovery_level);
 290
 291         switch (pf->tx_timeout_recovery_level) {
 292         case 0:
 293                 /* disable and re-enable queues for the VSI */
 294                 if (in_interrupt()) {
 295                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 296                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 297                 } else {
 298                         i40e_vsi_reinit_locked(vsi);
 299                 }
 300                 break;
 301         case 1:
 302                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 303                 break;
 304         case 2:
 305                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 306                 break;
 307         case 3:
 308                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 309                 break;
 310         default:
 311                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 312                 set_bit(__I40E_DOWN_REQUESTED, &pf->state);
 313                 set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
 314                 break;
 315         }
 316         i40e_service_event_schedule(pf);
 317         pf->tx_timeout_recovery_level++;
 318 }
 319
 320 /**
 321  * i40e_release_rx_desc - Store the new tail and head values
 322  * @rx_ring: ring to bump
 323  * @val: new head index
 324  **/
 325 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 326 {
 327         rx_ring->next_to_use = val;
 328
 329         /* Force memory writes to complete before letting h/w
 330          * know there are new descriptors to fetch.  (Only
 331          * applicable for weak-ordered memory model archs,
 332          * such as IA-64).
 333          */
 334         wmb();
 335         writel(val, rx_ring->tail);
 336 }
 337
 338 /**
 339  * i40e_get_vsi_stats_struct - Get System Network Statistics
 340  * @vsi: the VSI we care about
 341  *
 342  * Returns the address of the device statistics structure.
 343  * The statistics are actually updated from the service task.
 344  **/
 345 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 346 {
 347         return &vsi->net_stats;
 348 }
 349
 350 /**
 351  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 352  * @netdev: network interface device structure
 353  *
 354  * Returns the address of the device statistics structure.
 355  * The statistics are actually updated from the service task.
 356  **/
 357 #ifdef I40E_FCOE
 358 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 359                                              struct net_device *netdev,
 360                                              struct rtnl_link_stats64 *stats)
 361 #else
 362 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 363                                              struct net_device *netdev,
 364                                              struct rtnl_link_stats64 *stats)
 365 #endif
 366 {
 367         struct i40e_netdev_priv *np = netdev_priv(netdev);
 368         struct i40e_ring *tx_ring, *rx_ring;
 369         struct i40e_vsi *vsi = np->vsi;
 370         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 371         int i;
 372
 373         if (test_bit(__I40E_DOWN, &vsi->state))
 374                 return stats;
 375
 376         if (!vsi->tx_rings)
 377                 return stats;
 378
 379         rcu_read_lock();
 380         for (i = 0; i < vsi->num_queue_pairs; i++) {
 381                 u64 bytes, packets;
 382                 unsigned int start;
 383
 384                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 385                 if (!tx_ring)
 386                         continue;
 387
 388                 do {
 389                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 390                         packets = tx_ring->stats.packets;
 391                         bytes   = tx_ring->stats.bytes;
 392                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 393
 394                 stats->tx_packets += packets;
 395                 stats->tx_bytes   += bytes;
 396                 rx_ring = &tx_ring[1];
 397
 398                 do {
 399                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 400                         packets = rx_ring->stats.packets;
 401                         bytes   = rx_ring->stats.bytes;
 402                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 403
 404                 stats->rx_packets += packets;
 405                 stats->rx_bytes   += bytes;
 406         }
 407         rcu_read_unlock();
 408
 409         /* following stats updated by i40e_watchdog_subtask() */
 410         stats->multicast        = vsi_stats->multicast;
 411         stats->tx_errors        = vsi_stats->tx_errors;
 412         stats->tx_dropped       = vsi_stats->tx_dropped;
 413         stats->rx_errors        = vsi_stats->rx_errors;
 414         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 415         stats->rx_length_errors = vsi_stats->rx_length_errors;
 416
 417         return stats;
 418 }
 419
 420 /**
 421  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 422  * @vsi: the VSI to have its stats reset
 423  **/
 424 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 425 {
 426         struct rtnl_link_stats64 *ns;
 427         int i;
 428
 429         if (!vsi)
 430                 return;
 431
 432         ns = i40e_get_vsi_stats_struct(vsi);
 433         memset(ns, 0, sizeof(*ns));
 434         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 435         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 436         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 437         if (vsi->rx_rings && vsi->rx_rings[0]) {
 438                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 439                         memset(&vsi->rx_rings[i]->stats, 0 ,
 440                                sizeof(vsi->rx_rings[i]->stats));
 441                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 442                                sizeof(vsi->rx_rings[i]->rx_stats));
 443                         memset(&vsi->tx_rings[i]->stats, 0 ,
 444                                sizeof(vsi->tx_rings[i]->stats));
 445                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 446                                sizeof(vsi->tx_rings[i]->tx_stats));
 447                 }
 448         }
 449         vsi->stat_offsets_loaded = false;
 450 }
 451
 452 /**
 453  * i40e_pf_reset_stats - Reset all of the stats for the given pf
 454  * @pf: the PF to be reset
 455  **/
 456 void i40e_pf_reset_stats(struct i40e_pf *pf)
 457 {
 458         int i;
 459
 460         memset(&pf->stats, 0, sizeof(pf->stats));
 461         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 462         pf->stat_offsets_loaded = false;
 463
 464         for (i = 0; i < I40E_MAX_VEB; i++) {
 465                 if (pf->veb[i]) {
 466                         memset(&pf->veb[i]->stats, 0,
 467                                sizeof(pf->veb[i]->stats));
 468                         memset(&pf->veb[i]->stats_offsets, 0,
 469                                sizeof(pf->veb[i]->stats_offsets));
 470                         pf->veb[i]->stat_offsets_loaded = false;
 471                 }
 472         }
 473 }
 474
 475 /**
 476  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 477  * @hw: ptr to the hardware info
 478  * @hireg: the high 32 bit reg to read
 479  * @loreg: the low 32 bit reg to read
 480  * @offset_loaded: has the initial offset been loaded yet
 481  * @offset: ptr to current offset value
 482  * @stat: ptr to the stat
 483  *
 484  * Since the device stats are not reset at PFReset, they likely will not
 485  * be zeroed when the driver starts.  We'll save the first values read
 486  * and use them as offsets to be subtracted from the raw values in order
 487  * to report stats that count from zero.  In the process, we also manage
 488  * the potential roll-over.
 489  **/
 490 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 491                                bool offset_loaded, u64 *offset, u64 *stat)
 492 {
 493         u64 new_data;
 494
 495         if (hw->device_id == I40E_DEV_ID_QEMU) {
 496                 new_data = rd32(hw, loreg);
 497                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 498         } else {
 499                 new_data = rd64(hw, loreg);
 500         }
 501         if (!offset_loaded)
 502                 *offset = new_data;
 503         if (likely(new_data >= *offset))
 504                 *stat = new_data - *offset;
 505         else
 506                 *stat = (new_data + ((u64)1 << 48)) - *offset;
 507         *stat &= 0xFFFFFFFFFFFFULL;
 508 }
 509
 510 /**
 511  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 512  * @hw: ptr to the hardware info
 513  * @reg: the hw reg to read
 514  * @offset_loaded: has the initial offset been loaded yet
 515  * @offset: ptr to current offset value
 516  * @stat: ptr to the stat
 517  **/
 518 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 519                                bool offset_loaded, u64 *offset, u64 *stat)
 520 {
 521         u32 new_data;
 522
 523         new_data = rd32(hw, reg);
 524         if (!offset_loaded)
 525                 *offset = new_data;
 526         if (likely(new_data >= *offset))
 527                 *stat = (u32)(new_data - *offset);
 528         else
 529                 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
 530 }
 531
 532 /**
 533  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 534  * @vsi: the VSI to be updated
 535  **/
 536 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 537 {
 538         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 539         struct i40e_pf *pf = vsi->back;
 540         struct i40e_hw *hw = &pf->hw;
 541         struct i40e_eth_stats *oes;
 542         struct i40e_eth_stats *es;     /* device's eth stats */
 543
 544         es = &vsi->eth_stats;
 545         oes = &vsi->eth_stats_offsets;
 546
 547         /* Gather up the stats that the hw collects */
 548         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 549                            vsi->stat_offsets_loaded,
 550                            &oes->tx_errors, &es->tx_errors);
 551         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 552                            vsi->stat_offsets_loaded,
 553                            &oes->rx_discards, &es->rx_discards);
 554         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 555                            vsi->stat_offsets_loaded,
 556                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 557         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 558                            vsi->stat_offsets_loaded,
 559                            &oes->tx_errors, &es->tx_errors);
 560
 561         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 562                            I40E_GLV_GORCL(stat_idx),
 563                            vsi->stat_offsets_loaded,
 564                            &oes->rx_bytes, &es->rx_bytes);
 565         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 566                            I40E_GLV_UPRCL(stat_idx),
 567                            vsi->stat_offsets_loaded,
 568                            &oes->rx_unicast, &es->rx_unicast);
 569         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 570                            I40E_GLV_MPRCL(stat_idx),
 571                            vsi->stat_offsets_loaded,
 572                            &oes->rx_multicast, &es->rx_multicast);
 573         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 574                            I40E_GLV_BPRCL(stat_idx),
 575                            vsi->stat_offsets_loaded,
 576                            &oes->rx_broadcast, &es->rx_broadcast);
 577
 578         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 579                            I40E_GLV_GOTCL(stat_idx),
 580                            vsi->stat_offsets_loaded,
 581                            &oes->tx_bytes, &es->tx_bytes);
 582         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 583                            I40E_GLV_UPTCL(stat_idx),
 584                            vsi->stat_offsets_loaded,
 585                            &oes->tx_unicast, &es->tx_unicast);
 586         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 587                            I40E_GLV_MPTCL(stat_idx),
 588                            vsi->stat_offsets_loaded,
 589                            &oes->tx_multicast, &es->tx_multicast);
 590         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 591                            I40E_GLV_BPTCL(stat_idx),
 592                            vsi->stat_offsets_loaded,
 593                            &oes->tx_broadcast, &es->tx_broadcast);
 594         vsi->stat_offsets_loaded = true;
 595 }
 596
 597 /**
 598  * i40e_update_veb_stats - Update Switch component statistics
 599  * @veb: the VEB being updated
 600  **/
 601 static void i40e_update_veb_stats(struct i40e_veb *veb)
 602 {
 603         struct i40e_pf *pf = veb->pf;
 604         struct i40e_hw *hw = &pf->hw;
 605         struct i40e_eth_stats *oes;
 606         struct i40e_eth_stats *es;     /* device's eth stats */
 607         int idx = 0;
 608
 609         idx = veb->stats_idx;
 610         es = &veb->stats;
 611         oes = &veb->stats_offsets;
 612
 613         /* Gather up the stats that the hw collects */
 614         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 615                            veb->stat_offsets_loaded,
 616                            &oes->tx_discards, &es->tx_discards);
 617         if (hw->revision_id > 0)
 618                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 619                                    veb->stat_offsets_loaded,
 620                                    &oes->rx_unknown_protocol,
 621                                    &es->rx_unknown_protocol);
 622         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 623                            veb->stat_offsets_loaded,
 624                            &oes->rx_bytes, &es->rx_bytes);
 625         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 626                            veb->stat_offsets_loaded,
 627                            &oes->rx_unicast, &es->rx_unicast);
 628         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 629                            veb->stat_offsets_loaded,
 630                            &oes->rx_multicast, &es->rx_multicast);
 631         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 632                            veb->stat_offsets_loaded,
 633                            &oes->rx_broadcast, &es->rx_broadcast);
 634
 635         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 636                            veb->stat_offsets_loaded,
 637                            &oes->tx_bytes, &es->tx_bytes);
 638         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 639                            veb->stat_offsets_loaded,
 640                            &oes->tx_unicast, &es->tx_unicast);
 641         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 642                            veb->stat_offsets_loaded,
 643                            &oes->tx_multicast, &es->tx_multicast);
 644         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 645                            veb->stat_offsets_loaded,
 646                            &oes->tx_broadcast, &es->tx_broadcast);
 647         veb->stat_offsets_loaded = true;
 648 }
 649
 650 #ifdef I40E_FCOE
 651 /**
 652  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 653  * @vsi: the VSI that is capable of doing FCoE
 654  **/
 655 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 656 {
 657         struct i40e_pf *pf = vsi->back;
 658         struct i40e_hw *hw = &pf->hw;
 659         struct i40e_fcoe_stats *ofs;
 660         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 661         int idx;
 662
 663         if (vsi->type != I40E_VSI_FCOE)
 664                 return;
 665
 666         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 667         fs = &vsi->fcoe_stats;
 668         ofs = &vsi->fcoe_stats_offsets;
 669
 670         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 671                            vsi->fcoe_stat_offsets_loaded,
 672                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 673         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 674                            vsi->fcoe_stat_offsets_loaded,
 675                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 676         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 677                            vsi->fcoe_stat_offsets_loaded,
 678                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 679         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 680                            vsi->fcoe_stat_offsets_loaded,
 681                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 682         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 683                            vsi->fcoe_stat_offsets_loaded,
 684                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 685         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 686                            vsi->fcoe_stat_offsets_loaded,
 687                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 688         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 689                            vsi->fcoe_stat_offsets_loaded,
 690                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 691         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 692                            vsi->fcoe_stat_offsets_loaded,
 693                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 694
 695         vsi->fcoe_stat_offsets_loaded = true;
 696 }
 697
 698 #endif
 699 /**
 700  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 701  * @pf: the corresponding PF
 702  *
 703  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 704  **/
 705 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 706 {
 707         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 708         struct i40e_hw_port_stats *nsd = &pf->stats;
 709         struct i40e_hw *hw = &pf->hw;
 710         u64 xoff = 0;
 711         u16 i, v;
 712
 713         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 714             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 715                 return;
 716
 717         xoff = nsd->link_xoff_rx;
 718         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 719                            pf->stat_offsets_loaded,
 720                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 721
 722         /* No new LFC xoff rx */
 723         if (!(nsd->link_xoff_rx - xoff))
 724                 return;
 725
 726         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 727         for (v = 0; v < pf->num_alloc_vsi; v++) {
 728                 struct i40e_vsi *vsi = pf->vsi[v];
 729
 730                 if (!vsi || !vsi->tx_rings[0])
 731                         continue;
 732
 733                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 734                         struct i40e_ring *ring = vsi->tx_rings[i];
 735                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 736                 }
 737         }
 738 }
 739
 740 /**
 741  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 742  * @pf: the corresponding PF
 743  *
 744  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 745  **/
 746 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 747 {
 748         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 749         struct i40e_hw_port_stats *nsd = &pf->stats;
 750         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 751         struct i40e_dcbx_config *dcb_cfg;
 752         struct i40e_hw *hw = &pf->hw;
 753         u16 i, v;
 754         u8 tc;
 755
 756         dcb_cfg = &hw->local_dcbx_config;
 757
 758         /* See if DCB enabled with PFC TC */
 759         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 760             !(dcb_cfg->pfc.pfcenable)) {
 761                 i40e_update_link_xoff_rx(pf);
 762                 return;
 763         }
 764
 765         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 766                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 767                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 768                                    pf->stat_offsets_loaded,
 769                                    &osd->priority_xoff_rx[i],
 770                                    &nsd->priority_xoff_rx[i]);
 771
 772                 /* No new PFC xoff rx */
 773                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 774                         continue;
 775                 /* Get the TC for given priority */
 776                 tc = dcb_cfg->etscfg.prioritytable[i];
 777                 xoff[tc] = true;
 778         }
 779
 780         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 781         for (v = 0; v < pf->num_alloc_vsi; v++) {
 782                 struct i40e_vsi *vsi = pf->vsi[v];
 783
 784                 if (!vsi || !vsi->tx_rings[0])
 785                         continue;
 786
 787                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 788                         struct i40e_ring *ring = vsi->tx_rings[i];
 789
 790                         tc = ring->dcb_tc;
 791                         if (xoff[tc])
 792                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 793                                           &ring->state);
 794                 }
 795         }
 796 }
 797
 798 /**
 799  * i40e_update_vsi_stats - Update the vsi statistics counters.
 800  * @vsi: the VSI to be updated
 801  *
 802  * There are a few instances where we store the same stat in a
 803  * couple of different structs.  This is partly because we have
 804  * the netdev stats that need to be filled out, which is slightly
 805  * different from the "eth_stats" defined by the chip and used in
 806  * VF communications.  We sort it out here.
 807  **/
 808 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 809 {
 810         struct i40e_pf *pf = vsi->back;
 811         struct rtnl_link_stats64 *ons;
 812         struct rtnl_link_stats64 *ns;   /* netdev stats */
 813         struct i40e_eth_stats *oes;
 814         struct i40e_eth_stats *es;     /* device's eth stats */
 815         u32 tx_restart, tx_busy;
 816         struct i40e_ring *p;
 817         u32 rx_page, rx_buf;
 818         u64 bytes, packets;
 819         unsigned int start;
 820         u64 rx_p, rx_b;
 821         u64 tx_p, tx_b;
 822         u16 q;
 823
 824         if (test_bit(__I40E_DOWN, &vsi->state) ||
 825             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 826                 return;
 827
 828         ns = i40e_get_vsi_stats_struct(vsi);
 829         ons = &vsi->net_stats_offsets;
 830         es = &vsi->eth_stats;
 831         oes = &vsi->eth_stats_offsets;
 832
 833         /* Gather up the netdev and vsi stats that the driver collects
 834          * on the fly during packet processing
 835          */
 836         rx_b = rx_p = 0;
 837         tx_b = tx_p = 0;
 838         tx_restart = tx_busy = 0;
 839         rx_page = 0;
 840         rx_buf = 0;
 841         rcu_read_lock();
 842         for (q = 0; q < vsi->num_queue_pairs; q++) {
 843                 /* locate Tx ring */
 844                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 845
 846                 do {
 847                         start = u64_stats_fetch_begin_irq(&p->syncp);
 848                         packets = p->stats.packets;
 849                         bytes = p->stats.bytes;
 850                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 851                 tx_b += bytes;
 852                 tx_p += packets;
 853                 tx_restart += p->tx_stats.restart_queue;
 854                 tx_busy += p->tx_stats.tx_busy;
 855
 856                 /* Rx queue is part of the same block as Tx queue */
 857                 p = &p[1];
 858                 do {
 859                         start = u64_stats_fetch_begin_irq(&p->syncp);
 860                         packets = p->stats.packets;
 861                         bytes = p->stats.bytes;
 862                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 863                 rx_b += bytes;
 864                 rx_p += packets;
 865                 rx_buf += p->rx_stats.alloc_buff_failed;
 866                 rx_page += p->rx_stats.alloc_page_failed;
 867         }
 868         rcu_read_unlock();
 869         vsi->tx_restart = tx_restart;
 870         vsi->tx_busy = tx_busy;
 871         vsi->rx_page_failed = rx_page;
 872         vsi->rx_buf_failed = rx_buf;
 873
 874         ns->rx_packets = rx_p;
 875         ns->rx_bytes = rx_b;
 876         ns->tx_packets = tx_p;
 877         ns->tx_bytes = tx_b;
 878
 879         /* update netdev stats from eth stats */
 880         i40e_update_eth_stats(vsi);
 881         ons->tx_errors = oes->tx_errors;
 882         ns->tx_errors = es->tx_errors;
 883         ons->multicast = oes->rx_multicast;
 884         ns->multicast = es->rx_multicast;
 885         ons->rx_dropped = oes->rx_discards;
 886         ns->rx_dropped = es->rx_discards;
 887         ons->tx_dropped = oes->tx_discards;
 888         ns->tx_dropped = es->tx_discards;
 889
 890         /* pull in a couple PF stats if this is the main vsi */
 891         if (vsi == pf->vsi[pf->lan_vsi]) {
 892                 ns->rx_crc_errors = pf->stats.crc_errors;
 893                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 894                 ns->rx_length_errors = pf->stats.rx_length_errors;
 895         }
 896 }
 897
 898 /**
 899  * i40e_update_pf_stats - Update the pf statistics counters.
 900  * @pf: the PF to be updated
 901  **/
 902 static void i40e_update_pf_stats(struct i40e_pf *pf)
 903 {
 904         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 905         struct i40e_hw_port_stats *nsd = &pf->stats;
 906         struct i40e_hw *hw = &pf->hw;
 907         u32 val;
 908         int i;
 909
 910         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 911                            I40E_GLPRT_GORCL(hw->port),
 912                            pf->stat_offsets_loaded,
 913                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 914         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 915                            I40E_GLPRT_GOTCL(hw->port),
 916                            pf->stat_offsets_loaded,
 917                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 918         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 919                            pf->stat_offsets_loaded,
 920                            &osd->eth.rx_discards,
 921                            &nsd->eth.rx_discards);
 922         i40e_stat_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 #ifdef I40E_FCOE
4839 int i40e_open(struct net_device *netdev)
4840 #else
4841 static int i40e_open(struct net_device *netdev)
4842 #endif
4843 {
4844         struct i40e_netdev_priv *np = netdev_priv(netdev);
4845         struct i40e_vsi *vsi = np->vsi;
4846         struct i40e_pf *pf = vsi->back;
4847         int err;
4848
4849         /* disallow open during test or if eeprom is broken */
4850         if (test_bit(__I40E_TESTING, &pf->state) ||
4851             test_bit(__I40E_BAD_EEPROM, &pf->state))
4852                 return -EBUSY;
4853
4854         netif_carrier_off(netdev);
4855
4856         err = i40e_vsi_open(vsi);
4857         if (err)
4858                 return err;
4859
4860         /* configure global TSO hardware offload settings */
4861         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4862                                                        TCP_FLAG_FIN) >> 16);
4863         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4864                                                        TCP_FLAG_FIN |
4865                                                        TCP_FLAG_CWR) >> 16);
4866         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4867
4868 #ifdef CONFIG_I40E_VXLAN
4869         vxlan_get_rx_port(netdev);
4870 #endif
4871
4872         return 0;
4873 }
4874
4875 /**
4876  * i40e_vsi_open -
4877  * @vsi: the VSI to open
4878  *
4879  * Finish initialization of the VSI.
4880  *
4881  * Returns 0 on success, negative value on failure
4882  **/
4883 int i40e_vsi_open(struct i40e_vsi *vsi)
4884 {
4885         struct i40e_pf *pf = vsi->back;
4886         char int_name[I40E_INT_NAME_STR_LEN];
4887         int err;
4888
4889         /* allocate descriptors */
4890         err = i40e_vsi_setup_tx_resources(vsi);
4891         if (err)
4892                 goto err_setup_tx;
4893         err = i40e_vsi_setup_rx_resources(vsi);
4894         if (err)
4895                 goto err_setup_rx;
4896
4897         err = i40e_vsi_configure(vsi);
4898         if (err)
4899                 goto err_setup_rx;
4900
4901         if (vsi->netdev) {
4902                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4903                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4904                 err = i40e_vsi_request_irq(vsi, int_name);
4905                 if (err)
4906                         goto err_setup_rx;
4907
4908                 /* Notify the stack of the actual queue counts. */
4909                 err = netif_set_real_num_tx_queues(vsi->netdev,
4910                                                    vsi->num_queue_pairs);
4911                 if (err)
4912                         goto err_set_queues;
4913
4914                 err = netif_set_real_num_rx_queues(vsi->netdev,
4915                                                    vsi->num_queue_pairs);
4916                 if (err)
4917                         goto err_set_queues;
4918
4919         } else if (vsi->type == I40E_VSI_FDIR) {
4920                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
4921                          dev_driver_string(&pf->pdev->dev),
4922                          dev_name(&pf->pdev->dev));
4923                 err = i40e_vsi_request_irq(vsi, int_name);
4924
4925         } else {
4926                 err = -EINVAL;
4927                 goto err_setup_rx;
4928         }
4929
4930         err = i40e_up_complete(vsi);
4931         if (err)
4932                 goto err_up_complete;
4933
4934         return 0;
4935
4936 err_up_complete:
4937         i40e_down(vsi);
4938 err_set_queues:
4939         i40e_vsi_free_irq(vsi);
4940 err_setup_rx:
4941         i40e_vsi_free_rx_resources(vsi);
4942 err_setup_tx:
4943         i40e_vsi_free_tx_resources(vsi);
4944         if (vsi == pf->vsi[pf->lan_vsi])
4945                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4946
4947         return err;
4948 }
4949
4950 /**
4951  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4952  * @pf: Pointer to pf
4953  *
4954  * This function destroys the hlist where all the Flow Director
4955  * filters were saved.
4956  **/
4957 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4958 {
4959         struct i40e_fdir_filter *filter;
4960         struct hlist_node *node2;
4961
4962         hlist_for_each_entry_safe(filter, node2,
4963                                   &pf->fdir_filter_list, fdir_node) {
4964                 hlist_del(&filter->fdir_node);
4965                 kfree(filter);
4966         }
4967         pf->fdir_pf_active_filters = 0;
4968 }
4969
4970 /**
4971  * i40e_close - Disables a network interface
4972  * @netdev: network interface device structure
4973  *
4974  * The close entry point is called when an interface is de-activated
4975  * by the OS.  The hardware is still under the driver's control, but
4976  * this netdev interface is disabled.
4977  *
4978  * Returns 0, this is not allowed to fail
4979  **/
4980 #ifdef I40E_FCOE
4981 int i40e_close(struct net_device *netdev)
4982 #else
4983 static int i40e_close(struct net_device *netdev)
4984 #endif
4985 {
4986         struct i40e_netdev_priv *np = netdev_priv(netdev);
4987         struct i40e_vsi *vsi = np->vsi;
4988
4989         i40e_vsi_close(vsi);
4990
4991         return 0;
4992 }
4993
4994 /**
4995  * i40e_do_reset - Start a PF or Core Reset sequence
4996  * @pf: board private structure
4997  * @reset_flags: which reset is requested
4998  *
4999  * The essential difference in resets is that the PF Reset
5000  * doesn't clear the packet buffers, doesn't reset the PE
5001  * firmware, and doesn't bother the other PFs on the chip.
5002  **/
5003 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5004 {
5005         u32 val;
5006
5007         WARN_ON(in_interrupt());
5008
5009         if (i40e_check_asq_alive(&pf->hw))
5010                 i40e_vc_notify_reset(pf);
5011
5012         /* do the biggest reset indicated */
5013         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
5014
5015                 /* Request a Global Reset
5016                  *
5017                  * This will start the chip's countdown to the actual full
5018                  * chip reset event, and a warning interrupt to be sent
5019                  * to all PFs, including the requestor.  Our handler
5020                  * for the warning interrupt will deal with the shutdown
5021                  * and recovery of the switch setup.
5022                  */
5023                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5024                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5025                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5026                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5027
5028         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
5029
5030                 /* Request a Core Reset
5031                  *
5032                  * Same as Global Reset, except does *not* include the MAC/PHY
5033                  */
5034                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5035                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5036                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5037                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5038                 i40e_flush(&pf->hw);
5039
5040         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
5041
5042                 /* Request a PF Reset
5043                  *
5044                  * Resets only the PF-specific registers
5045                  *
5046                  * This goes directly to the tear-down and rebuild of
5047                  * the switch, since we need to do all the recovery as
5048                  * for the Core Reset.
5049                  */
5050                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5051                 i40e_handle_reset_warning(pf);
5052
5053         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
5054                 int v;
5055
5056                 /* Find the VSI(s) that requested a re-init */
5057                 dev_info(&pf->pdev->dev,
5058                          "VSI reinit requested\n");
5059                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5060                         struct i40e_vsi *vsi = pf->vsi[v];
5061                         if (vsi != NULL &&
5062                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5063                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5064                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5065                         }
5066                 }
5067
5068                 /* no further action needed, so return now */
5069                 return;
5070         } else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
5071                 int v;
5072
5073                 /* Find the VSI(s) that needs to be brought down */
5074                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5075                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5076                         struct i40e_vsi *vsi = pf->vsi[v];
5077                         if (vsi != NULL &&
5078                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5079                                 set_bit(__I40E_DOWN, &vsi->state);
5080                                 i40e_down(vsi);
5081                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5082                         }
5083                 }
5084
5085                 /* no further action needed, so return now */
5086                 return;
5087         } else {
5088                 dev_info(&pf->pdev->dev,
5089                          "bad reset request 0x%08x\n", reset_flags);
5090                 return;
5091         }
5092 }
5093
5094 #ifdef CONFIG_I40E_DCB
5095 /**
5096  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5097  * @pf: board private structure
5098  * @old_cfg: current DCB config
5099  * @new_cfg: new DCB config
5100  **/
5101 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5102                             struct i40e_dcbx_config *old_cfg,
5103                             struct i40e_dcbx_config *new_cfg)
5104 {
5105         bool need_reconfig = false;
5106
5107         /* Check if ETS configuration has changed */
5108         if (memcmp(&new_cfg->etscfg,
5109                    &old_cfg->etscfg,
5110                    sizeof(new_cfg->etscfg))) {
5111                 /* If Priority Table has changed reconfig is needed */
5112                 if (memcmp(&new_cfg->etscfg.prioritytable,
5113                            &old_cfg->etscfg.prioritytable,
5114                            sizeof(new_cfg->etscfg.prioritytable))) {
5115                         need_reconfig = true;
5116                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5117                 }
5118
5119                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5120                            &old_cfg->etscfg.tcbwtable,
5121                            sizeof(new_cfg->etscfg.tcbwtable)))
5122                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5123
5124                 if (memcmp(&new_cfg->etscfg.tsatable,
5125                            &old_cfg->etscfg.tsatable,
5126                            sizeof(new_cfg->etscfg.tsatable)))
5127                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5128         }
5129
5130         /* Check if PFC configuration has changed */
5131         if (memcmp(&new_cfg->pfc,
5132                    &old_cfg->pfc,
5133                    sizeof(new_cfg->pfc))) {
5134                 need_reconfig = true;
5135                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5136         }
5137
5138         /* Check if APP Table has changed */
5139         if (memcmp(&new_cfg->app,
5140                    &old_cfg->app,
5141                    sizeof(new_cfg->app))) {
5142                 need_reconfig = true;
5143                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5144         }
5145
5146         dev_dbg(&pf->pdev->dev, "%s: need_reconfig=%d\n", __func__,
5147                 need_reconfig);
5148         return need_reconfig;
5149 }
5150
5151 /**
5152  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5153  * @pf: board private structure
5154  * @e: event info posted on ARQ
5155  **/
5156 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5157                                   struct i40e_arq_event_info *e)
5158 {
5159         struct i40e_aqc_lldp_get_mib *mib =
5160                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5161         struct i40e_hw *hw = &pf->hw;
5162         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
5163         struct i40e_dcbx_config tmp_dcbx_cfg;
5164         bool need_reconfig = false;
5165         int ret = 0;
5166         u8 type;
5167
5168         /* Not DCB capable or capability disabled */
5169         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5170                 return ret;
5171
5172         /* Ignore if event is not for Nearest Bridge */
5173         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5174                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5175         dev_dbg(&pf->pdev->dev,
5176                 "%s: LLDP event mib bridge type 0x%x\n", __func__, type);
5177         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5178                 return ret;
5179
5180         /* Check MIB Type and return if event for Remote MIB update */
5181         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5182         dev_dbg(&pf->pdev->dev,
5183                 "%s: LLDP event mib type %s\n", __func__,
5184                 type ? "remote" : "local");
5185         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5186                 /* Update the remote cached instance and return */
5187                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5188                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5189                                 &hw->remote_dcbx_config);
5190                 goto exit;
5191         }
5192
5193         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
5194         /* Store the old configuration */
5195         tmp_dcbx_cfg = *dcbx_cfg;
5196
5197         /* Get updated DCBX data from firmware */
5198         ret = i40e_get_dcb_config(&pf->hw);
5199         if (ret) {
5200                 dev_info(&pf->pdev->dev, "Failed querying DCB configuration data from firmware.\n");
5201                 goto exit;
5202         }
5203
5204         /* No change detected in DCBX configs */
5205         if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
5206                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5207                 goto exit;
5208         }
5209
5210         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg, dcbx_cfg);
5211
5212         i40e_dcbnl_flush_apps(pf, dcbx_cfg);
5213
5214         if (!need_reconfig)
5215                 goto exit;
5216
5217         /* Enable DCB tagging only when more than one TC */
5218         if (i40e_dcb_get_num_tc(dcbx_cfg) > 1)
5219                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5220         else
5221                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5222
5223         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5224         /* Reconfiguration needed quiesce all VSIs */
5225         i40e_pf_quiesce_all_vsi(pf);
5226
5227         /* Changes in configuration update VEB/VSI */
5228         i40e_dcb_reconfigure(pf);
5229
5230         ret = i40e_resume_port_tx(pf);
5231
5232         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5233         /* In case of error no point in resuming VSIs */
5234         if (ret)
5235                 goto exit;
5236
5237         /* Wait for the PF's Tx queues to be disabled */
5238         ret = i40e_pf_wait_txq_disabled(pf);
5239         if (!ret)
5240                 i40e_pf_unquiesce_all_vsi(pf);
5241 exit:
5242         return ret;
5243 }
5244 #endif /* CONFIG_I40E_DCB */
5245
5246 /**
5247  * i40e_do_reset_safe - Protected reset path for userland calls.
5248  * @pf: board private structure
5249  * @reset_flags: which reset is requested
5250  *
5251  **/
5252 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5253 {
5254         rtnl_lock();
5255         i40e_do_reset(pf, reset_flags);
5256         rtnl_unlock();
5257 }
5258
5259 /**
5260  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5261  * @pf: board private structure
5262  * @e: event info posted on ARQ
5263  *
5264  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5265  * and VF queues
5266  **/
5267 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5268                                            struct i40e_arq_event_info *e)
5269 {
5270         struct i40e_aqc_lan_overflow *data =
5271                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5272         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5273         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5274         struct i40e_hw *hw = &pf->hw;
5275         struct i40e_vf *vf;
5276         u16 vf_id;
5277
5278         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5279                 queue, qtx_ctl);
5280
5281         /* Queue belongs to VF, find the VF and issue VF reset */
5282         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5283             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5284                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5285                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5286                 vf_id -= hw->func_caps.vf_base_id;
5287                 vf = &pf->vf[vf_id];
5288                 i40e_vc_notify_vf_reset(vf);
5289                 /* Allow VF to process pending reset notification */
5290                 msleep(20);
5291                 i40e_reset_vf(vf, false);
5292         }
5293 }
5294
5295 /**
5296  * i40e_service_event_complete - Finish up the service event
5297  * @pf: board private structure
5298  **/
5299 static void i40e_service_event_complete(struct i40e_pf *pf)
5300 {
5301         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5302
5303         /* flush memory to make sure state is correct before next watchog */
5304         smp_mb__before_atomic();
5305         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5306 }
5307
5308 /**
5309  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5310  * @pf: board private structure
5311  **/
5312 int i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5313 {
5314         int val, fcnt_prog;
5315
5316         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5317         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5318         return fcnt_prog;
5319 }
5320
5321 /**
5322  * i40e_get_current_fd_count - Get the count of total FD filters programmed
5323  * @pf: board private structure
5324  **/
5325 int i40e_get_current_fd_count(struct i40e_pf *pf)
5326 {
5327         int val, fcnt_prog;
5328         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5329         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5330                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5331                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5332         return fcnt_prog;
5333 }
5334
5335 /**
5336  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5337  * @pf: board private structure
5338  **/
5339 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5340 {
5341         u32 fcnt_prog, fcnt_avail;
5342
5343         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5344                 return;
5345
5346         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5347          * to re-enable
5348          */
5349         fcnt_prog = i40e_get_cur_guaranteed_fd_count(pf);
5350         fcnt_avail = pf->fdir_pf_filter_count;
5351         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5352             (pf->fd_add_err == 0) ||
5353             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5354                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5355                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5356                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5357                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5358                 }
5359         }
5360         /* Wait for some more space to be available to turn on ATR */
5361         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5362                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5363                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5364                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5365                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5366                 }
5367         }
5368 }
5369
5370 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5371 /**
5372  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5373  * @pf: board private structure
5374  **/
5375 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5376 {
5377         int flush_wait_retry = 50;
5378         int reg;
5379
5380         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5381                 return;
5382
5383         if (time_after(jiffies, pf->fd_flush_timestamp +
5384                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5385                 set_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5386                 pf->fd_flush_timestamp = jiffies;
5387                 pf->auto_disable_flags |= I40E_FLAG_FD_SB_ENABLED;
5388                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5389                 /* flush all filters */
5390                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5391                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5392                 i40e_flush(&pf->hw);
5393                 pf->fd_flush_cnt++;
5394                 pf->fd_add_err = 0;
5395                 do {
5396                         /* Check FD flush status every 5-6msec */
5397                         usleep_range(5000, 6000);
5398                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5399                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5400                                 break;
5401                 } while (flush_wait_retry--);
5402                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5403                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5404                 } else {
5405                         /* replay sideband filters */
5406                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5407
5408                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5409                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5410                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5411                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5412                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5413                 }
5414         }
5415 }
5416
5417 /**
5418  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5419  * @pf: board private structure
5420  **/
5421 int i40e_get_current_atr_cnt(struct i40e_pf *pf)
5422 {
5423         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5424 }
5425
5426 /* We can see up to 256 filter programming desc in transit if the filters are
5427  * being applied really fast; before we see the first
5428  * filter miss error on Rx queue 0. Accumulating enough error messages before
5429  * reacting will make sure we don't cause flush too often.
5430  */
5431 #define I40E_MAX_FD_PROGRAM_ERROR 256
5432
5433 /**
5434  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5435  * @pf: board private structure
5436  **/
5437 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5438 {
5439
5440         /* if interface is down do nothing */
5441         if (test_bit(__I40E_DOWN, &pf->state))
5442                 return;
5443
5444         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5445                 return;
5446
5447         if ((pf->fd_add_err >= I40E_MAX_FD_PROGRAM_ERROR) &&
5448             (i40e_get_current_atr_cnt(pf) >= pf->fd_atr_cnt) &&
5449             (i40e_get_current_atr_cnt(pf) > pf->fdir_pf_filter_count))
5450                 i40e_fdir_flush_and_replay(pf);
5451
5452         i40e_fdir_check_and_reenable(pf);
5453
5454 }
5455
5456 /**
5457  * i40e_vsi_link_event - notify VSI of a link event
5458  * @vsi: vsi to be notified
5459  * @link_up: link up or down
5460  **/
5461 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5462 {
5463         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5464                 return;
5465
5466         switch (vsi->type) {
5467         case I40E_VSI_MAIN:
5468 #ifdef I40E_FCOE
5469         case I40E_VSI_FCOE:
5470 #endif
5471                 if (!vsi->netdev || !vsi->netdev_registered)
5472                         break;
5473
5474                 if (link_up) {
5475                         netif_carrier_on(vsi->netdev);
5476                         netif_tx_wake_all_queues(vsi->netdev);
5477                 } else {
5478                         netif_carrier_off(vsi->netdev);
5479                         netif_tx_stop_all_queues(vsi->netdev);
5480                 }
5481                 break;
5482
5483         case I40E_VSI_SRIOV:
5484         case I40E_VSI_VMDQ2:
5485         case I40E_VSI_CTRL:
5486         case I40E_VSI_MIRROR:
5487         default:
5488                 /* there is no notification for other VSIs */
5489                 break;
5490         }
5491 }
5492
5493 /**
5494  * i40e_veb_link_event - notify elements on the veb of a link event
5495  * @veb: veb to be notified
5496  * @link_up: link up or down
5497  **/
5498 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5499 {
5500         struct i40e_pf *pf;
5501         int i;
5502
5503         if (!veb || !veb->pf)
5504                 return;
5505         pf = veb->pf;
5506
5507         /* depth first... */
5508         for (i = 0; i < I40E_MAX_VEB; i++)
5509                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5510                         i40e_veb_link_event(pf->veb[i], link_up);
5511
5512         /* ... now the local VSIs */
5513         for (i = 0; i < pf->num_alloc_vsi; i++)
5514                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5515                         i40e_vsi_link_event(pf->vsi[i], link_up);
5516 }
5517
5518 /**
5519  * i40e_link_event - Update netif_carrier status
5520  * @pf: board private structure
5521  **/
5522 static void i40e_link_event(struct i40e_pf *pf)
5523 {
5524         bool new_link, old_link;
5525         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5526         u8 new_link_speed, old_link_speed;
5527
5528         /* set this to force the get_link_status call to refresh state */
5529         pf->hw.phy.get_link_info = true;
5530
5531         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5532         new_link = i40e_get_link_status(&pf->hw);
5533         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5534         new_link_speed = pf->hw.phy.link_info.link_speed;
5535
5536         if (new_link == old_link &&
5537             new_link_speed == old_link_speed &&
5538             (test_bit(__I40E_DOWN, &vsi->state) ||
5539              new_link == netif_carrier_ok(vsi->netdev)))
5540                 return;
5541
5542         if (!test_bit(__I40E_DOWN, &vsi->state))
5543                 i40e_print_link_message(vsi, new_link);
5544
5545         /* Notify the base of the switch tree connected to
5546          * the link.  Floating VEBs are not notified.
5547          */
5548         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5549                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5550         else
5551                 i40e_vsi_link_event(vsi, new_link);
5552
5553         if (pf->vf)
5554                 i40e_vc_notify_link_state(pf);
5555
5556         if (pf->flags & I40E_FLAG_PTP)
5557                 i40e_ptp_set_increment(pf);
5558 }
5559
5560 /**
5561  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5562  * @pf: board private structure
5563  *
5564  * Set the per-queue flags to request a check for stuck queues in the irq
5565  * clean functions, then force interrupts to be sure the irq clean is called.
5566  **/
5567 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5568 {
5569         int i, v;
5570
5571         /* If we're down or resetting, just bail */
5572         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
5573                 return;
5574
5575         /* for each VSI/netdev
5576          *     for each Tx queue
5577          *         set the check flag
5578          *     for each q_vector
5579          *         force an interrupt
5580          */
5581         for (v = 0; v < pf->num_alloc_vsi; v++) {
5582                 struct i40e_vsi *vsi = pf->vsi[v];
5583                 int armed = 0;
5584
5585                 if (!pf->vsi[v] ||
5586                     test_bit(__I40E_DOWN, &vsi->state) ||
5587                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5588                         continue;
5589
5590                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5591                         set_check_for_tx_hang(vsi->tx_rings[i]);
5592                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5593                                      &vsi->tx_rings[i]->state))
5594                                 armed++;
5595                 }
5596
5597                 if (armed) {
5598                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5599                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5600                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5601                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
5602                                       I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
5603                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
5604                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
5605                         } else {
5606                                 u16 vec = vsi->base_vector - 1;
5607                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5608                                       I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK |
5609                                       I40E_PFINT_DYN_CTLN_ITR_INDX_MASK |
5610                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_ENA_MASK |
5611                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK);
5612                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5613                                         wr32(&vsi->back->hw,
5614                                              I40E_PFINT_DYN_CTLN(vec), val);
5615                         }
5616                         i40e_flush(&vsi->back->hw);
5617                 }
5618         }
5619 }
5620
5621 /**
5622  * i40e_watchdog_subtask - periodic checks not using event driven response
5623  * @pf: board private structure
5624  **/
5625 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5626 {
5627         int i;
5628
5629         /* if interface is down do nothing */
5630         if (test_bit(__I40E_DOWN, &pf->state) ||
5631             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5632                 return;
5633
5634         /* make sure we don't do these things too often */
5635         if (time_before(jiffies, (pf->service_timer_previous +
5636                                   pf->service_timer_period)))
5637                 return;
5638         pf->service_timer_previous = jiffies;
5639
5640         i40e_check_hang_subtask(pf);
5641         i40e_link_event(pf);
5642
5643         /* Update the stats for active netdevs so the network stack
5644          * can look at updated numbers whenever it cares to
5645          */
5646         for (i = 0; i < pf->num_alloc_vsi; i++)
5647                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5648                         i40e_update_stats(pf->vsi[i]);
5649
5650         /* Update the stats for the active switching components */
5651         for (i = 0; i < I40E_MAX_VEB; i++)
5652                 if (pf->veb[i])
5653                         i40e_update_veb_stats(pf->veb[i]);
5654
5655         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5656 }
5657
5658 /**
5659  * i40e_reset_subtask - Set up for resetting the device and driver
5660  * @pf: board private structure
5661  **/
5662 static void i40e_reset_subtask(struct i40e_pf *pf)
5663 {
5664         u32 reset_flags = 0;
5665
5666         rtnl_lock();
5667         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5668                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5669                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5670         }
5671         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5672                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5673                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5674         }
5675         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5676                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5677                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5678         }
5679         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5680                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5681                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5682         }
5683         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5684                 reset_flags |= (1 << __I40E_DOWN_REQUESTED);
5685                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5686         }
5687
5688         /* If there's a recovery already waiting, it takes
5689          * precedence before starting a new reset sequence.
5690          */
5691         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5692                 i40e_handle_reset_warning(pf);
5693                 goto unlock;
5694         }
5695
5696         /* If we're already down or resetting, just bail */
5697         if (reset_flags &&
5698             !test_bit(__I40E_DOWN, &pf->state) &&
5699             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5700                 i40e_do_reset(pf, reset_flags);
5701
5702 unlock:
5703         rtnl_unlock();
5704 }
5705
5706 /**
5707  * i40e_handle_link_event - Handle link event
5708  * @pf: board private structure
5709  * @e: event info posted on ARQ
5710  **/
5711 static void i40e_handle_link_event(struct i40e_pf *pf,
5712                                    struct i40e_arq_event_info *e)
5713 {
5714         struct i40e_hw *hw = &pf->hw;
5715         struct i40e_aqc_get_link_status *status =
5716                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5717         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
5718
5719         /* save off old link status information */
5720         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
5721                sizeof(pf->hw.phy.link_info_old));
5722
5723         /* Do a new status request to re-enable LSE reporting
5724          * and load new status information into the hw struct
5725          * This completely ignores any state information
5726          * in the ARQ event info, instead choosing to always
5727          * issue the AQ update link status command.
5728          */
5729         i40e_link_event(pf);
5730
5731         /* check for unqualified module, if link is down */
5732         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5733             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5734             (!(status->link_info & I40E_AQ_LINK_UP)))
5735                 dev_err(&pf->pdev->dev,
5736                         "The driver failed to link because an unqualified module was detected.\n");
5737 }
5738
5739 /**
5740  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5741  * @pf: board private structure
5742  **/
5743 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5744 {
5745         struct i40e_arq_event_info event;
5746         struct i40e_hw *hw = &pf->hw;
5747         u16 pending, i = 0;
5748         i40e_status ret;
5749         u16 opcode;
5750         u32 oldval;
5751         u32 val;
5752
5753         /* Do not run clean AQ when PF reset fails */
5754         if (test_bit(__I40E_RESET_FAILED, &pf->state))
5755                 return;
5756
5757         /* check for error indications */
5758         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5759         oldval = val;
5760         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5761                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5762                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5763         }
5764         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5765                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5766                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5767         }
5768         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5769                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5770                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5771         }
5772         if (oldval != val)
5773                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5774
5775         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5776         oldval = val;
5777         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5778                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5779                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5780         }
5781         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5782                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5783                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5784         }
5785         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5786                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5787                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5788         }
5789         if (oldval != val)
5790                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5791
5792         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
5793         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
5794         if (!event.msg_buf)
5795                 return;
5796
5797         do {
5798                 ret = i40e_clean_arq_element(hw, &event, &pending);
5799                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
5800                         break;
5801                 else if (ret) {
5802                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5803                         break;
5804                 }
5805
5806                 opcode = le16_to_cpu(event.desc.opcode);
5807                 switch (opcode) {
5808
5809                 case i40e_aqc_opc_get_link_status:
5810                         i40e_handle_link_event(pf, &event);
5811                         break;
5812                 case i40e_aqc_opc_send_msg_to_pf:
5813                         ret = i40e_vc_process_vf_msg(pf,
5814                                         le16_to_cpu(event.desc.retval),
5815                                         le32_to_cpu(event.desc.cookie_high),
5816                                         le32_to_cpu(event.desc.cookie_low),
5817                                         event.msg_buf,
5818                                         event.msg_len);
5819                         break;
5820                 case i40e_aqc_opc_lldp_update_mib:
5821                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5822 #ifdef CONFIG_I40E_DCB
5823                         rtnl_lock();
5824                         ret = i40e_handle_lldp_event(pf, &event);
5825                         rtnl_unlock();
5826 #endif /* CONFIG_I40E_DCB */
5827                         break;
5828                 case i40e_aqc_opc_event_lan_overflow:
5829                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5830                         i40e_handle_lan_overflow_event(pf, &event);
5831                         break;
5832                 case i40e_aqc_opc_send_msg_to_peer:
5833                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5834                         break;
5835                 default:
5836                         dev_info(&pf->pdev->dev,
5837                                  "ARQ Error: Unknown event 0x%04x received\n",
5838                                  opcode);
5839                         break;
5840                 }
5841         } while (pending && (i++ < pf->adminq_work_limit));
5842
5843         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5844         /* re-enable Admin queue interrupt cause */
5845         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5846         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5847         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5848         i40e_flush(hw);
5849
5850         kfree(event.msg_buf);
5851 }
5852
5853 /**
5854  * i40e_verify_eeprom - make sure eeprom is good to use
5855  * @pf: board private structure
5856  **/
5857 static void i40e_verify_eeprom(struct i40e_pf *pf)
5858 {
5859         int err;
5860
5861         err = i40e_diag_eeprom_test(&pf->hw);
5862         if (err) {
5863                 /* retry in case of garbage read */
5864                 err = i40e_diag_eeprom_test(&pf->hw);
5865                 if (err) {
5866                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5867                                  err);
5868                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5869                 }
5870         }
5871
5872         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5873                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5874                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5875         }
5876 }
5877
5878 /**
5879  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5880  * @veb: pointer to the VEB instance
5881  *
5882  * This is a recursive function that first builds the attached VSIs then
5883  * recurses in to build the next layer of VEB.  We track the connections
5884  * through our own index numbers because the seid's from the HW could
5885  * change across the reset.
5886  **/
5887 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5888 {
5889         struct i40e_vsi *ctl_vsi = NULL;
5890         struct i40e_pf *pf = veb->pf;
5891         int v, veb_idx;
5892         int ret;
5893
5894         /* build VSI that owns this VEB, temporarily attached to base VEB */
5895         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
5896                 if (pf->vsi[v] &&
5897                     pf->vsi[v]->veb_idx == veb->idx &&
5898                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5899                         ctl_vsi = pf->vsi[v];
5900                         break;
5901                 }
5902         }
5903         if (!ctl_vsi) {
5904                 dev_info(&pf->pdev->dev,
5905                          "missing owner VSI for veb_idx %d\n", veb->idx);
5906                 ret = -ENOENT;
5907                 goto end_reconstitute;
5908         }
5909         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5910                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5911         ret = i40e_add_vsi(ctl_vsi);
5912         if (ret) {
5913                 dev_info(&pf->pdev->dev,
5914                          "rebuild of owner VSI failed: %d\n", ret);
5915                 goto end_reconstitute;
5916         }
5917         i40e_vsi_reset_stats(ctl_vsi);
5918
5919         /* create the VEB in the switch and move the VSI onto the VEB */
5920         ret = i40e_add_veb(veb, ctl_vsi);
5921         if (ret)
5922                 goto end_reconstitute;
5923
5924         /* Enable LB mode for the main VSI now that it is on a VEB */
5925         i40e_enable_pf_switch_lb(pf);
5926
5927         /* create the remaining VSIs attached to this VEB */
5928         for (v = 0; v < pf->num_alloc_vsi; v++) {
5929                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5930                         continue;
5931
5932                 if (pf->vsi[v]->veb_idx == veb->idx) {
5933                         struct i40e_vsi *vsi = pf->vsi[v];
5934                         vsi->uplink_seid = veb->seid;
5935                         ret = i40e_add_vsi(vsi);
5936                         if (ret) {
5937                                 dev_info(&pf->pdev->dev,
5938                                          "rebuild of vsi_idx %d failed: %d\n",
5939                                          v, ret);
5940                                 goto end_reconstitute;
5941                         }
5942                         i40e_vsi_reset_stats(vsi);
5943                 }
5944         }
5945
5946         /* create any VEBs attached to this VEB - RECURSION */
5947         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5948                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5949                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5950                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5951                         if (ret)
5952                                 break;
5953                 }
5954         }
5955
5956 end_reconstitute:
5957         return ret;
5958 }
5959
5960 /**
5961  * i40e_get_capabilities - get info about the HW
5962  * @pf: the PF struct
5963  **/
5964 static int i40e_get_capabilities(struct i40e_pf *pf)
5965 {
5966         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5967         u16 data_size;
5968         int buf_len;
5969         int err;
5970
5971         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5972         do {
5973                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5974                 if (!cap_buf)
5975                         return -ENOMEM;
5976
5977                 /* this loads the data into the hw struct for us */
5978                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5979                                             &data_size,
5980                                             i40e_aqc_opc_list_func_capabilities,
5981                                             NULL);
5982                 /* data loaded, buffer no longer needed */
5983                 kfree(cap_buf);
5984
5985                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
5986                         /* retry with a larger buffer */
5987                         buf_len = data_size;
5988                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
5989                         dev_info(&pf->pdev->dev,
5990                                  "capability discovery failed: aq=%d\n",
5991                                  pf->hw.aq.asq_last_status);
5992                         return -ENODEV;
5993                 }
5994         } while (err);
5995
5996         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
5997             (pf->hw.aq.fw_maj_ver < 2)) {
5998                 pf->hw.func_caps.num_msix_vectors++;
5999                 pf->hw.func_caps.num_msix_vectors_vf++;
6000         }
6001
6002         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6003                 dev_info(&pf->pdev->dev,
6004                          "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",
6005                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6006                          pf->hw.func_caps.num_msix_vectors,
6007                          pf->hw.func_caps.num_msix_vectors_vf,
6008                          pf->hw.func_caps.fd_filters_guaranteed,
6009                          pf->hw.func_caps.fd_filters_best_effort,
6010                          pf->hw.func_caps.num_tx_qp,
6011                          pf->hw.func_caps.num_vsis);
6012
6013 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6014                        + pf->hw.func_caps.num_vfs)
6015         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6016                 dev_info(&pf->pdev->dev,
6017                          "got num_vsis %d, setting num_vsis to %d\n",
6018                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6019                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6020         }
6021
6022         return 0;
6023 }
6024
6025 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6026
6027 /**
6028  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6029  * @pf: board private structure
6030  **/
6031 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6032 {
6033         struct i40e_vsi *vsi;
6034         int i;
6035
6036         /* quick workaround for an NVM issue that leaves a critical register
6037          * uninitialized
6038          */
6039         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6040                 static const u32 hkey[] = {
6041                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6042                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6043                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6044                         0x95b3a76d};
6045
6046                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6047                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6048         }
6049
6050         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6051                 return;
6052
6053         /* find existing VSI and see if it needs configuring */
6054         vsi = NULL;
6055         for (i = 0; i < pf->num_alloc_vsi; i++) {
6056                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6057                         vsi = pf->vsi[i];
6058                         break;
6059                 }
6060         }
6061
6062         /* create a new VSI if none exists */
6063         if (!vsi) {
6064                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6065                                      pf->vsi[pf->lan_vsi]->seid, 0);
6066                 if (!vsi) {
6067                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6068                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6069                         return;
6070                 }
6071         }
6072
6073         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6074 }
6075
6076 /**
6077  * i40e_fdir_teardown - release the Flow Director resources
6078  * @pf: board private structure
6079  **/
6080 static void i40e_fdir_teardown(struct i40e_pf *pf)
6081 {
6082         int i;
6083
6084         i40e_fdir_filter_exit(pf);
6085         for (i = 0; i < pf->num_alloc_vsi; i++) {
6086                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6087                         i40e_vsi_release(pf->vsi[i]);
6088                         break;
6089                 }
6090         }
6091 }
6092
6093 /**
6094  * i40e_prep_for_reset - prep for the core to reset
6095  * @pf: board private structure
6096  *
6097  * Close up the VFs and other things in prep for pf Reset.
6098   **/
6099 static void i40e_prep_for_reset(struct i40e_pf *pf)
6100 {
6101         struct i40e_hw *hw = &pf->hw;
6102         i40e_status ret = 0;
6103         u32 v;
6104
6105         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6106         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6107                 return;
6108
6109         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6110
6111         /* quiesce the VSIs and their queues that are not already DOWN */
6112         i40e_pf_quiesce_all_vsi(pf);
6113
6114         for (v = 0; v < pf->num_alloc_vsi; v++) {
6115                 if (pf->vsi[v])
6116                         pf->vsi[v]->seid = 0;
6117         }
6118
6119         i40e_shutdown_adminq(&pf->hw);
6120
6121         /* call shutdown HMC */
6122         if (hw->hmc.hmc_obj) {
6123                 ret = i40e_shutdown_lan_hmc(hw);
6124                 if (ret)
6125                         dev_warn(&pf->pdev->dev,
6126                                  "shutdown_lan_hmc failed: %d\n", ret);
6127         }
6128 }
6129
6130 /**
6131  * i40e_send_version - update firmware with driver version
6132  * @pf: PF struct
6133  */
6134 static void i40e_send_version(struct i40e_pf *pf)
6135 {
6136         struct i40e_driver_version dv;
6137
6138         dv.major_version = DRV_VERSION_MAJOR;
6139         dv.minor_version = DRV_VERSION_MINOR;
6140         dv.build_version = DRV_VERSION_BUILD;
6141         dv.subbuild_version = 0;
6142         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6143         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6144 }
6145
6146 /**
6147  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6148  * @pf: board private structure
6149  * @reinit: if the Main VSI needs to re-initialized.
6150  **/
6151 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6152 {
6153         struct i40e_hw *hw = &pf->hw;
6154         u8 set_fc_aq_fail = 0;
6155         i40e_status ret;
6156         u32 v;
6157
6158         /* Now we wait for GRST to settle out.
6159          * We don't have to delete the VEBs or VSIs from the hw switch
6160          * because the reset will make them disappear.
6161          */
6162         ret = i40e_pf_reset(hw);
6163         if (ret) {
6164                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6165                 set_bit(__I40E_RESET_FAILED, &pf->state);
6166                 goto clear_recovery;
6167         }
6168         pf->pfr_count++;
6169
6170         if (test_bit(__I40E_DOWN, &pf->state))
6171                 goto clear_recovery;
6172         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6173
6174         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6175         ret = i40e_init_adminq(&pf->hw);
6176         if (ret) {
6177                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
6178                 goto clear_recovery;
6179         }
6180
6181         /* re-verify the eeprom if we just had an EMP reset */
6182         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6183                 i40e_verify_eeprom(pf);
6184
6185         i40e_clear_pxe_mode(hw);
6186         ret = i40e_get_capabilities(pf);
6187         if (ret) {
6188                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
6189                          ret);
6190                 goto end_core_reset;
6191         }
6192
6193         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6194                                 hw->func_caps.num_rx_qp,
6195                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6196         if (ret) {
6197                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6198                 goto end_core_reset;
6199         }
6200         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6201         if (ret) {
6202                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6203                 goto end_core_reset;
6204         }
6205
6206 #ifdef CONFIG_I40E_DCB
6207         ret = i40e_init_pf_dcb(pf);
6208         if (ret) {
6209                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6210                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6211                 /* Continue without DCB enabled */
6212         }
6213 #endif /* CONFIG_I40E_DCB */
6214 #ifdef I40E_FCOE
6215         ret = i40e_init_pf_fcoe(pf);
6216         if (ret)
6217                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6218
6219 #endif
6220         /* do basic switch setup */
6221         ret = i40e_setup_pf_switch(pf, reinit);
6222         if (ret)
6223                 goto end_core_reset;
6224
6225         /* driver is only interested in link up/down and module qualification
6226          * reports from firmware
6227          */
6228         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6229                                        I40E_AQ_EVENT_LINK_UPDOWN |
6230                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6231         if (ret)
6232                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", ret);
6233
6234         /* make sure our flow control settings are restored */
6235         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6236         if (ret)
6237                 dev_info(&pf->pdev->dev, "set fc fail, aq_err %d\n", ret);
6238
6239         /* Rebuild the VSIs and VEBs that existed before reset.
6240          * They are still in our local switch element arrays, so only
6241          * need to rebuild the switch model in the HW.
6242          *
6243          * If there were VEBs but the reconstitution failed, we'll try
6244          * try to recover minimal use by getting the basic PF VSI working.
6245          */
6246         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6247                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6248                 /* find the one VEB connected to the MAC, and find orphans */
6249                 for (v = 0; v < I40E_MAX_VEB; v++) {
6250                         if (!pf->veb[v])
6251                                 continue;
6252
6253                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6254                             pf->veb[v]->uplink_seid == 0) {
6255                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6256
6257                                 if (!ret)
6258                                         continue;
6259
6260                                 /* If Main VEB failed, we're in deep doodoo,
6261                                  * so give up rebuilding the switch and set up
6262                                  * for minimal rebuild of PF VSI.
6263                                  * If orphan failed, we'll report the error
6264                                  * but try to keep going.
6265                                  */
6266                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6267                                         dev_info(&pf->pdev->dev,
6268                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6269                                                  ret);
6270                                         pf->vsi[pf->lan_vsi]->uplink_seid
6271                                                                 = pf->mac_seid;
6272                                         break;
6273                                 } else if (pf->veb[v]->uplink_seid == 0) {
6274                                         dev_info(&pf->pdev->dev,
6275                                                  "rebuild of orphan VEB failed: %d\n",
6276                                                  ret);
6277                                 }
6278                         }
6279                 }
6280         }
6281
6282         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6283                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6284                 /* no VEB, so rebuild only the Main VSI */
6285                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6286                 if (ret) {
6287                         dev_info(&pf->pdev->dev,
6288                                  "rebuild of Main VSI failed: %d\n", ret);
6289                         goto end_core_reset;
6290                 }
6291         }
6292
6293         msleep(75);
6294         ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6295         if (ret) {
6296                 dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
6297                          pf->hw.aq.asq_last_status);
6298         }
6299
6300         /* reinit the misc interrupt */
6301         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6302                 ret = i40e_setup_misc_vector(pf);
6303
6304         /* restart the VSIs that were rebuilt and running before the reset */
6305         i40e_pf_unquiesce_all_vsi(pf);
6306
6307         if (pf->num_alloc_vfs) {
6308                 for (v = 0; v < pf->num_alloc_vfs; v++)
6309                         i40e_reset_vf(&pf->vf[v], true);
6310         }
6311
6312         /* tell the firmware that we're starting */
6313         i40e_send_version(pf);
6314
6315 end_core_reset:
6316         clear_bit(__I40E_RESET_FAILED, &pf->state);
6317 clear_recovery:
6318         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6319 }
6320
6321 /**
6322  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
6323  * @pf: board private structure
6324  *
6325  * Close up the VFs and other things in prep for a Core Reset,
6326  * then get ready to rebuild the world.
6327  **/
6328 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6329 {
6330         i40e_prep_for_reset(pf);
6331         i40e_reset_and_rebuild(pf, false);
6332 }
6333
6334 /**
6335  * i40e_handle_mdd_event
6336  * @pf: pointer to the pf structure
6337  *
6338  * Called from the MDD irq handler to identify possibly malicious vfs
6339  **/
6340 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6341 {
6342         struct i40e_hw *hw = &pf->hw;
6343         bool mdd_detected = false;
6344         bool pf_mdd_detected = false;
6345         struct i40e_vf *vf;
6346         u32 reg;
6347         int i;
6348
6349         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6350                 return;
6351
6352         /* find what triggered the MDD event */
6353         reg = rd32(hw, I40E_GL_MDET_TX);
6354         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6355                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6356                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6357                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6358                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6359                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6360                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6361                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6362                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6363                                 pf->hw.func_caps.base_queue;
6364                 if (netif_msg_tx_err(pf))
6365                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d pf number 0x%02x vf number 0x%02x\n",
6366                                  event, queue, pf_num, vf_num);
6367                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6368                 mdd_detected = true;
6369         }
6370         reg = rd32(hw, I40E_GL_MDET_RX);
6371         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6372                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6373                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6374                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6375                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6376                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6377                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6378                                 pf->hw.func_caps.base_queue;
6379                 if (netif_msg_rx_err(pf))
6380                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6381                                  event, queue, func);
6382                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6383                 mdd_detected = true;
6384         }
6385
6386         if (mdd_detected) {
6387                 reg = rd32(hw, I40E_PF_MDET_TX);
6388                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6389                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6390                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6391                         pf_mdd_detected = true;
6392                 }
6393                 reg = rd32(hw, I40E_PF_MDET_RX);
6394                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6395                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6396                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6397                         pf_mdd_detected = true;
6398                 }
6399                 /* Queue belongs to the PF, initiate a reset */
6400                 if (pf_mdd_detected) {
6401                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6402                         i40e_service_event_schedule(pf);
6403                 }
6404         }
6405
6406         /* see if one of the VFs needs its hand slapped */
6407         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6408                 vf = &(pf->vf[i]);
6409                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6410                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6411                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6412                         vf->num_mdd_events++;
6413                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6414                                  i);
6415                 }
6416
6417                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6418                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6419                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6420                         vf->num_mdd_events++;
6421                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6422                                  i);
6423                 }
6424
6425                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6426                         dev_info(&pf->pdev->dev,
6427                                  "Too many MDD events on VF %d, disabled\n", i);
6428                         dev_info(&pf->pdev->dev,
6429                                  "Use PF Control I/F to re-enable the VF\n");
6430                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6431                 }
6432         }
6433
6434         /* re-enable mdd interrupt cause */
6435         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6436         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6437         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6438         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6439         i40e_flush(hw);
6440 }
6441
6442 #ifdef CONFIG_I40E_VXLAN
6443 /**
6444  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6445  * @pf: board private structure
6446  **/
6447 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6448 {
6449         struct i40e_hw *hw = &pf->hw;
6450         i40e_status ret;
6451         u8 filter_index;
6452         __be16 port;
6453         int i;
6454
6455         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6456                 return;
6457
6458         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6459
6460         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6461                 if (pf->pending_vxlan_bitmap & (1 << i)) {
6462                         pf->pending_vxlan_bitmap &= ~(1 << i);
6463                         port = pf->vxlan_ports[i];
6464                         ret = port ?
6465                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
6466                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6467                                                      &filter_index, NULL)
6468                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
6469
6470                         if (ret) {
6471                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
6472                                          port ? "adding" : "deleting",
6473                                          ntohs(port), port ? i : i);
6474
6475                                 pf->vxlan_ports[i] = 0;
6476                         } else {
6477                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
6478                                          port ? "Added" : "Deleted",
6479                                          ntohs(port), port ? i : filter_index);
6480                         }
6481                 }
6482         }
6483 }
6484
6485 #endif
6486 /**
6487  * i40e_service_task - Run the driver's async subtasks
6488  * @work: pointer to work_struct containing our data
6489  **/
6490 static void i40e_service_task(struct work_struct *work)
6491 {
6492         struct i40e_pf *pf = container_of(work,
6493                                           struct i40e_pf,
6494                                           service_task);
6495         unsigned long start_time = jiffies;
6496
6497         /* don't bother with service tasks if a reset is in progress */
6498         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6499                 i40e_service_event_complete(pf);
6500                 return;
6501         }
6502
6503         i40e_reset_subtask(pf);
6504         i40e_handle_mdd_event(pf);
6505         i40e_vc_process_vflr_event(pf);
6506         i40e_watchdog_subtask(pf);
6507         i40e_fdir_reinit_subtask(pf);
6508         i40e_sync_filters_subtask(pf);
6509 #ifdef CONFIG_I40E_VXLAN
6510         i40e_sync_vxlan_filters_subtask(pf);
6511 #endif
6512         i40e_clean_adminq_subtask(pf);
6513
6514         i40e_service_event_complete(pf);
6515
6516         /* If the tasks have taken longer than one timer cycle or there
6517          * is more work to be done, reschedule the service task now
6518          * rather than wait for the timer to tick again.
6519          */
6520         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6521             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6522             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6523             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6524                 i40e_service_event_schedule(pf);
6525 }
6526
6527 /**
6528  * i40e_service_timer - timer callback
6529  * @data: pointer to PF struct
6530  **/
6531 static void i40e_service_timer(unsigned long data)
6532 {
6533         struct i40e_pf *pf = (struct i40e_pf *)data;
6534
6535         mod_timer(&pf->service_timer,
6536                   round_jiffies(jiffies + pf->service_timer_period));
6537         i40e_service_event_schedule(pf);
6538 }
6539
6540 /**
6541  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6542  * @vsi: the VSI being configured
6543  **/
6544 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6545 {
6546         struct i40e_pf *pf = vsi->back;
6547
6548         switch (vsi->type) {
6549         case I40E_VSI_MAIN:
6550                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6551                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6552                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6553                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6554                         vsi->num_q_vectors = pf->num_lan_msix;
6555                 else
6556                         vsi->num_q_vectors = 1;
6557
6558                 break;
6559
6560         case I40E_VSI_FDIR:
6561                 vsi->alloc_queue_pairs = 1;
6562                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6563                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6564                 vsi->num_q_vectors = 1;
6565                 break;
6566
6567         case I40E_VSI_VMDQ2:
6568                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6569                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6570                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6571                 vsi->num_q_vectors = pf->num_vmdq_msix;
6572                 break;
6573
6574         case I40E_VSI_SRIOV:
6575                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6576                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6577                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6578                 break;
6579
6580 #ifdef I40E_FCOE
6581         case I40E_VSI_FCOE:
6582                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6583                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6584                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6585                 vsi->num_q_vectors = pf->num_fcoe_msix;
6586                 break;
6587
6588 #endif /* I40E_FCOE */
6589         default:
6590                 WARN_ON(1);
6591                 return -ENODATA;
6592         }
6593
6594         return 0;
6595 }
6596
6597 /**
6598  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6599  * @type: VSI pointer
6600  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6601  *
6602  * On error: returns error code (negative)
6603  * On success: returns 0
6604  **/
6605 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6606 {
6607         int size;
6608         int ret = 0;
6609
6610         /* allocate memory for both Tx and Rx ring pointers */
6611         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6612         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6613         if (!vsi->tx_rings)
6614                 return -ENOMEM;
6615         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6616
6617         if (alloc_qvectors) {
6618                 /* allocate memory for q_vector pointers */
6619                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6620                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6621                 if (!vsi->q_vectors) {
6622                         ret = -ENOMEM;
6623                         goto err_vectors;
6624                 }
6625         }
6626         return ret;
6627
6628 err_vectors:
6629         kfree(vsi->tx_rings);
6630         return ret;
6631 }
6632
6633 /**
6634  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6635  * @pf: board private structure
6636  * @type: type of VSI
6637  *
6638  * On error: returns error code (negative)
6639  * On success: returns vsi index in PF (positive)
6640  **/
6641 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6642 {
6643         int ret = -ENODEV;
6644         struct i40e_vsi *vsi;
6645         int vsi_idx;
6646         int i;
6647
6648         /* Need to protect the allocation of the VSIs at the PF level */
6649         mutex_lock(&pf->switch_mutex);
6650
6651         /* VSI list may be fragmented if VSI creation/destruction has
6652          * been happening.  We can afford to do a quick scan to look
6653          * for any free VSIs in the list.
6654          *
6655          * find next empty vsi slot, looping back around if necessary
6656          */
6657         i = pf->next_vsi;
6658         while (i < pf->num_alloc_vsi && pf->vsi[i])
6659                 i++;
6660         if (i >= pf->num_alloc_vsi) {
6661                 i = 0;
6662                 while (i < pf->next_vsi && pf->vsi[i])
6663                         i++;
6664         }
6665
6666         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6667                 vsi_idx = i;             /* Found one! */
6668         } else {
6669                 ret = -ENODEV;
6670                 goto unlock_pf;  /* out of VSI slots! */
6671         }
6672         pf->next_vsi = ++i;
6673
6674         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6675         if (!vsi) {
6676                 ret = -ENOMEM;
6677                 goto unlock_pf;
6678         }
6679         vsi->type = type;
6680         vsi->back = pf;
6681         set_bit(__I40E_DOWN, &vsi->state);
6682         vsi->flags = 0;
6683         vsi->idx = vsi_idx;
6684         vsi->rx_itr_setting = pf->rx_itr_default;
6685         vsi->tx_itr_setting = pf->tx_itr_default;
6686         vsi->netdev_registered = false;
6687         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6688         INIT_LIST_HEAD(&vsi->mac_filter_list);
6689         vsi->irqs_ready = false;
6690
6691         ret = i40e_set_num_rings_in_vsi(vsi);
6692         if (ret)
6693                 goto err_rings;
6694
6695         ret = i40e_vsi_alloc_arrays(vsi, true);
6696         if (ret)
6697                 goto err_rings;
6698
6699         /* Setup default MSIX irq handler for VSI */
6700         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6701
6702         pf->vsi[vsi_idx] = vsi;
6703         ret = vsi_idx;
6704         goto unlock_pf;
6705
6706 err_rings:
6707         pf->next_vsi = i - 1;
6708         kfree(vsi);
6709 unlock_pf:
6710         mutex_unlock(&pf->switch_mutex);
6711         return ret;
6712 }
6713
6714 /**
6715  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6716  * @type: VSI pointer
6717  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6718  *
6719  * On error: returns error code (negative)
6720  * On success: returns 0
6721  **/
6722 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6723 {
6724         /* free the ring and vector containers */
6725         if (free_qvectors) {
6726                 kfree(vsi->q_vectors);
6727                 vsi->q_vectors = NULL;
6728         }
6729         kfree(vsi->tx_rings);
6730         vsi->tx_rings = NULL;
6731         vsi->rx_rings = NULL;
6732 }
6733
6734 /**
6735  * i40e_vsi_clear - Deallocate the VSI provided
6736  * @vsi: the VSI being un-configured
6737  **/
6738 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6739 {
6740         struct i40e_pf *pf;
6741
6742         if (!vsi)
6743                 return 0;
6744
6745         if (!vsi->back)
6746                 goto free_vsi;
6747         pf = vsi->back;
6748
6749         mutex_lock(&pf->switch_mutex);
6750         if (!pf->vsi[vsi->idx]) {
6751                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6752                         vsi->idx, vsi->idx, vsi, vsi->type);
6753                 goto unlock_vsi;
6754         }
6755
6756         if (pf->vsi[vsi->idx] != vsi) {
6757                 dev_err(&pf->pdev->dev,
6758                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6759                         pf->vsi[vsi->idx]->idx,
6760                         pf->vsi[vsi->idx],
6761                         pf->vsi[vsi->idx]->type,
6762                         vsi->idx, vsi, vsi->type);
6763                 goto unlock_vsi;
6764         }
6765
6766         /* updates the pf for this cleared vsi */
6767         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6768         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6769
6770         i40e_vsi_free_arrays(vsi, true);
6771
6772         pf->vsi[vsi->idx] = NULL;
6773         if (vsi->idx < pf->next_vsi)
6774                 pf->next_vsi = vsi->idx;
6775
6776 unlock_vsi:
6777         mutex_unlock(&pf->switch_mutex);
6778 free_vsi:
6779         kfree(vsi);
6780
6781         return 0;
6782 }
6783
6784 /**
6785  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6786  * @vsi: the VSI being cleaned
6787  **/
6788 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6789 {
6790         int i;
6791
6792         if (vsi->tx_rings && vsi->tx_rings[0]) {
6793                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6794                         kfree_rcu(vsi->tx_rings[i], rcu);
6795                         vsi->tx_rings[i] = NULL;
6796                         vsi->rx_rings[i] = NULL;
6797                 }
6798         }
6799 }
6800
6801 /**
6802  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6803  * @vsi: the VSI being configured
6804  **/
6805 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6806 {
6807         struct i40e_ring *tx_ring, *rx_ring;
6808         struct i40e_pf *pf = vsi->back;
6809         int i;
6810
6811         /* Set basic values in the rings to be used later during open() */
6812         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6813                 /* allocate space for both Tx and Rx in one shot */
6814                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6815                 if (!tx_ring)
6816                         goto err_out;
6817
6818                 tx_ring->queue_index = i;
6819                 tx_ring->reg_idx = vsi->base_queue + i;
6820                 tx_ring->ring_active = false;
6821                 tx_ring->vsi = vsi;
6822                 tx_ring->netdev = vsi->netdev;
6823                 tx_ring->dev = &pf->pdev->dev;
6824                 tx_ring->count = vsi->num_desc;
6825                 tx_ring->size = 0;
6826                 tx_ring->dcb_tc = 0;
6827                 vsi->tx_rings[i] = tx_ring;
6828
6829                 rx_ring = &tx_ring[1];
6830                 rx_ring->queue_index = i;
6831                 rx_ring->reg_idx = vsi->base_queue + i;
6832                 rx_ring->ring_active = false;
6833                 rx_ring->vsi = vsi;
6834                 rx_ring->netdev = vsi->netdev;
6835                 rx_ring->dev = &pf->pdev->dev;
6836                 rx_ring->count = vsi->num_desc;
6837                 rx_ring->size = 0;
6838                 rx_ring->dcb_tc = 0;
6839                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6840                         set_ring_16byte_desc_enabled(rx_ring);
6841                 else
6842                         clear_ring_16byte_desc_enabled(rx_ring);
6843                 vsi->rx_rings[i] = rx_ring;
6844         }
6845
6846         return 0;
6847
6848 err_out:
6849         i40e_vsi_clear_rings(vsi);
6850         return -ENOMEM;
6851 }
6852
6853 /**
6854  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6855  * @pf: board private structure
6856  * @vectors: the number of MSI-X vectors to request
6857  *
6858  * Returns the number of vectors reserved, or error
6859  **/
6860 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6861 {
6862         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6863                                         I40E_MIN_MSIX, vectors);
6864         if (vectors < 0) {
6865                 dev_info(&pf->pdev->dev,
6866                          "MSI-X vector reservation failed: %d\n", vectors);
6867                 vectors = 0;
6868         }
6869
6870         return vectors;
6871 }
6872
6873 /**
6874  * i40e_init_msix - Setup the MSIX capability
6875  * @pf: board private structure
6876  *
6877  * Work with the OS to set up the MSIX vectors needed.
6878  *
6879  * Returns 0 on success, negative on failure
6880  **/
6881 static int i40e_init_msix(struct i40e_pf *pf)
6882 {
6883         i40e_status err = 0;
6884         struct i40e_hw *hw = &pf->hw;
6885         int other_vecs = 0;
6886         int v_budget, i;
6887         int vec;
6888
6889         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6890                 return -ENODEV;
6891
6892         /* The number of vectors we'll request will be comprised of:
6893          *   - Add 1 for "other" cause for Admin Queue events, etc.
6894          *   - The number of LAN queue pairs
6895          *      - Queues being used for RSS.
6896          *              We don't need as many as max_rss_size vectors.
6897          *              use rss_size instead in the calculation since that
6898          *              is governed by number of cpus in the system.
6899          *      - assumes symmetric Tx/Rx pairing
6900          *   - The number of VMDq pairs
6901 #ifdef I40E_FCOE
6902          *   - The number of FCOE qps.
6903 #endif
6904          * Once we count this up, try the request.
6905          *
6906          * If we can't get what we want, we'll simplify to nearly nothing
6907          * and try again.  If that still fails, we punt.
6908          */
6909         pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
6910         pf->num_vmdq_msix = pf->num_vmdq_qps;
6911         other_vecs = 1;
6912         other_vecs += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6913         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6914                 other_vecs++;
6915
6916         /* Scale down if necessary, and the rings will share vectors */
6917         pf->num_lan_msix = min_t(int, pf->num_lan_msix,
6918                         (hw->func_caps.num_msix_vectors - other_vecs));
6919         v_budget = pf->num_lan_msix + other_vecs;
6920
6921 #ifdef I40E_FCOE
6922         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6923                 pf->num_fcoe_msix = pf->num_fcoe_qps;
6924                 v_budget += pf->num_fcoe_msix;
6925         }
6926 #endif
6927
6928         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6929                                    GFP_KERNEL);
6930         if (!pf->msix_entries)
6931                 return -ENOMEM;
6932
6933         for (i = 0; i < v_budget; i++)
6934                 pf->msix_entries[i].entry = i;
6935         vec = i40e_reserve_msix_vectors(pf, v_budget);
6936
6937         if (vec != v_budget) {
6938                 /* If we have limited resources, we will start with no vectors
6939                  * for the special features and then allocate vectors to some
6940                  * of these features based on the policy and at the end disable
6941                  * the features that did not get any vectors.
6942                  */
6943 #ifdef I40E_FCOE
6944                 pf->num_fcoe_qps = 0;
6945                 pf->num_fcoe_msix = 0;
6946 #endif
6947                 pf->num_vmdq_msix = 0;
6948         }
6949
6950         if (vec < I40E_MIN_MSIX) {
6951                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6952                 kfree(pf->msix_entries);
6953                 pf->msix_entries = NULL;
6954                 return -ENODEV;
6955
6956         } else if (vec == I40E_MIN_MSIX) {
6957                 /* Adjust for minimal MSIX use */
6958                 pf->num_vmdq_vsis = 0;
6959                 pf->num_vmdq_qps = 0;
6960                 pf->num_lan_qps = 1;
6961                 pf->num_lan_msix = 1;
6962
6963         } else if (vec != v_budget) {
6964                 /* reserve the misc vector */
6965                 vec--;
6966
6967                 /* Scale vector usage down */
6968                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
6969                 pf->num_vmdq_vsis = 1;
6970
6971                 /* partition out the remaining vectors */
6972                 switch (vec) {
6973                 case 2:
6974                         pf->num_lan_msix = 1;
6975                         break;
6976                 case 3:
6977 #ifdef I40E_FCOE
6978                         /* give one vector to FCoE */
6979                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6980                                 pf->num_lan_msix = 1;
6981                                 pf->num_fcoe_msix = 1;
6982                         }
6983 #else
6984                         pf->num_lan_msix = 2;
6985 #endif
6986                         break;
6987                 default:
6988 #ifdef I40E_FCOE
6989                         /* give one vector to FCoE */
6990                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6991                                 pf->num_fcoe_msix = 1;
6992                                 vec--;
6993                         }
6994 #endif
6995                         pf->num_lan_msix = min_t(int, (vec / 2),
6996                                                  pf->num_lan_qps);
6997                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
6998                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
6999                         break;
7000                 }
7001         }
7002
7003         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7004             (pf->num_vmdq_msix == 0)) {
7005                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7006                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7007         }
7008 #ifdef I40E_FCOE
7009
7010         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7011                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7012                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7013         }
7014 #endif
7015         return err;
7016 }
7017
7018 /**
7019  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7020  * @vsi: the VSI being configured
7021  * @v_idx: index of the vector in the vsi struct
7022  *
7023  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7024  **/
7025 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7026 {
7027         struct i40e_q_vector *q_vector;
7028
7029         /* allocate q_vector */
7030         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7031         if (!q_vector)
7032                 return -ENOMEM;
7033
7034         q_vector->vsi = vsi;
7035         q_vector->v_idx = v_idx;
7036         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7037         if (vsi->netdev)
7038                 netif_napi_add(vsi->netdev, &q_vector->napi,
7039                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7040
7041         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7042         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7043
7044         /* tie q_vector and vsi together */
7045         vsi->q_vectors[v_idx] = q_vector;
7046
7047         return 0;
7048 }
7049
7050 /**
7051  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7052  * @vsi: the VSI being configured
7053  *
7054  * We allocate one q_vector per queue interrupt.  If allocation fails we
7055  * return -ENOMEM.
7056  **/
7057 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7058 {
7059         struct i40e_pf *pf = vsi->back;
7060         int v_idx, num_q_vectors;
7061         int err;
7062
7063         /* if not MSIX, give the one vector only to the LAN VSI */
7064         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7065                 num_q_vectors = vsi->num_q_vectors;
7066         else if (vsi == pf->vsi[pf->lan_vsi])
7067                 num_q_vectors = 1;
7068         else
7069                 return -EINVAL;
7070
7071         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7072                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7073                 if (err)
7074                         goto err_out;
7075         }
7076
7077         return 0;
7078
7079 err_out:
7080         while (v_idx--)
7081                 i40e_free_q_vector(vsi, v_idx);
7082
7083         return err;
7084 }
7085
7086 /**
7087  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7088  * @pf: board private structure to initialize
7089  **/
7090 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
7091 {
7092         int err = 0;
7093
7094         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7095                 err = i40e_init_msix(pf);
7096                 if (err) {
7097                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7098 #ifdef I40E_FCOE
7099                                        I40E_FLAG_FCOE_ENABLED   |
7100 #endif
7101                                        I40E_FLAG_RSS_ENABLED    |
7102                                        I40E_FLAG_DCB_CAPABLE    |
7103                                        I40E_FLAG_SRIOV_ENABLED  |
7104                                        I40E_FLAG_FD_SB_ENABLED  |
7105                                        I40E_FLAG_FD_ATR_ENABLED |
7106                                        I40E_FLAG_VMDQ_ENABLED);
7107
7108                         /* rework the queue expectations without MSIX */
7109                         i40e_determine_queue_usage(pf);
7110                 }
7111         }
7112
7113         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7114             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7115                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7116                 err = pci_enable_msi(pf->pdev);
7117                 if (err) {
7118                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
7119                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7120                 }
7121         }
7122
7123         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7124                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7125
7126         /* track first vector for misc interrupts */
7127         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
7128 }
7129
7130 /**
7131  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7132  * @pf: board private structure
7133  *
7134  * This sets up the handler for MSIX 0, which is used to manage the
7135  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7136  * when in MSI or Legacy interrupt mode.
7137  **/
7138 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7139 {
7140         struct i40e_hw *hw = &pf->hw;
7141         int err = 0;
7142
7143         /* Only request the irq if this is the first time through, and
7144          * not when we're rebuilding after a Reset
7145          */
7146         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7147                 err = request_irq(pf->msix_entries[0].vector,
7148                                   i40e_intr, 0, pf->int_name, pf);
7149                 if (err) {
7150                         dev_info(&pf->pdev->dev,
7151                                  "request_irq for %s failed: %d\n",
7152                                  pf->int_name, err);
7153                         return -EFAULT;
7154                 }
7155         }
7156
7157         i40e_enable_misc_int_causes(pf);
7158
7159         /* associate no queues to the misc vector */
7160         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7161         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7162
7163         i40e_flush(hw);
7164
7165         i40e_irq_dynamic_enable_icr0(pf);
7166
7167         return err;
7168 }
7169
7170 /**
7171  * i40e_config_rss - Prepare for RSS if used
7172  * @pf: board private structure
7173  **/
7174 static int i40e_config_rss(struct i40e_pf *pf)
7175 {
7176         u32 rss_key[I40E_PFQF_HKEY_MAX_INDEX + 1];
7177         struct i40e_hw *hw = &pf->hw;
7178         u32 lut = 0;
7179         int i, j;
7180         u64 hena;
7181         u32 reg_val;
7182
7183         netdev_rss_key_fill(rss_key, sizeof(rss_key));
7184         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7185                 wr32(hw, I40E_PFQF_HKEY(i), rss_key[i]);
7186
7187         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7188         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7189                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7190         hena |= I40E_DEFAULT_RSS_HENA;
7191         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7192         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7193
7194         /* Check capability and Set table size and register per hw expectation*/
7195         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7196         if (hw->func_caps.rss_table_size == 512) {
7197                 reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7198                 pf->rss_table_size = 512;
7199         } else {
7200                 pf->rss_table_size = 128;
7201                 reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7202         }
7203         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7204
7205         /* Populate the LUT with max no. of queues in round robin fashion */
7206         for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
7207
7208                 /* The assumption is that lan qp count will be the highest
7209                  * qp count for any PF VSI that needs RSS.
7210                  * If multiple VSIs need RSS support, all the qp counts
7211                  * for those VSIs should be a power of 2 for RSS to work.
7212                  * If LAN VSI is the only consumer for RSS then this requirement
7213                  * is not necessary.
7214                  */
7215                 if (j == pf->rss_size)
7216                         j = 0;
7217                 /* lut = 4-byte sliding window of 4 lut entries */
7218                 lut = (lut << 8) | (j &
7219                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
7220                 /* On i = 3, we have 4 entries in lut; write to the register */
7221                 if ((i & 3) == 3)
7222                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
7223         }
7224         i40e_flush(hw);
7225
7226         return 0;
7227 }
7228
7229 /**
7230  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7231  * @pf: board private structure
7232  * @queue_count: the requested queue count for rss.
7233  *
7234  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7235  * count which may be different from the requested queue count.
7236  **/
7237 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7238 {
7239         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7240                 return 0;
7241
7242         queue_count = min_t(int, queue_count, pf->rss_size_max);
7243
7244         if (queue_count != pf->rss_size) {
7245                 i40e_prep_for_reset(pf);
7246
7247                 pf->rss_size = queue_count;
7248
7249                 i40e_reset_and_rebuild(pf, true);
7250                 i40e_config_rss(pf);
7251         }
7252         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7253         return pf->rss_size;
7254 }
7255
7256 /**
7257  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7258  * @pf: board private structure to initialize
7259  *
7260  * i40e_sw_init initializes the Adapter private data structure.
7261  * Fields are initialized based on PCI device information and
7262  * OS network device settings (MTU size).
7263  **/
7264 static int i40e_sw_init(struct i40e_pf *pf)
7265 {
7266         int err = 0;
7267         int size;
7268
7269         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7270                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7271         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7272         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7273                 if (I40E_DEBUG_USER & debug)
7274                         pf->hw.debug_mask = debug;
7275                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7276                                                 I40E_DEFAULT_MSG_ENABLE);
7277         }
7278
7279         /* Set default capability flags */
7280         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7281                     I40E_FLAG_MSI_ENABLED     |
7282                     I40E_FLAG_MSIX_ENABLED    |
7283                     I40E_FLAG_RX_PS_ENABLED;
7284
7285         /* Set default ITR */
7286         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7287         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7288
7289         /* Depending on PF configurations, it is possible that the RSS
7290          * maximum might end up larger than the available queues
7291          */
7292         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
7293         pf->rss_size = 1;
7294         pf->rss_size_max = min_t(int, pf->rss_size_max,
7295                                  pf->hw.func_caps.num_tx_qp);
7296         if (pf->hw.func_caps.rss) {
7297                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7298                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7299         }
7300
7301         /* MFP mode enabled */
7302         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
7303                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7304                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7305         }
7306
7307         /* FW/NVM is not yet fixed in this regard */
7308         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7309             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7310                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7311                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7312                 /* Setup a counter for fd_atr per pf */
7313                 pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
7314                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7315                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7316                         /* Setup a counter for fd_sb per pf */
7317                         pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
7318                 } else {
7319                         dev_info(&pf->pdev->dev,
7320                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7321                 }
7322                 pf->fdir_pf_filter_count =
7323                                  pf->hw.func_caps.fd_filters_guaranteed;
7324                 pf->hw.fdir_shared_filter_count =
7325                                  pf->hw.func_caps.fd_filters_best_effort;
7326         }
7327
7328         if (pf->hw.func_caps.vmdq) {
7329                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7330                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7331                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
7332         }
7333
7334 #ifdef I40E_FCOE
7335         err = i40e_init_pf_fcoe(pf);
7336         if (err)
7337                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7338
7339 #endif /* I40E_FCOE */
7340 #ifdef CONFIG_PCI_IOV
7341         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7342                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7343                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7344                 pf->num_req_vfs = min_t(int,
7345                                         pf->hw.func_caps.num_vfs,
7346                                         I40E_MAX_VF_COUNT);
7347         }
7348 #endif /* CONFIG_PCI_IOV */
7349         pf->eeprom_version = 0xDEAD;
7350         pf->lan_veb = I40E_NO_VEB;
7351         pf->lan_vsi = I40E_NO_VSI;
7352
7353         /* set up queue assignment tracking */
7354         size = sizeof(struct i40e_lump_tracking)
7355                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7356         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7357         if (!pf->qp_pile) {
7358                 err = -ENOMEM;
7359                 goto sw_init_done;
7360         }
7361         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7362         pf->qp_pile->search_hint = 0;
7363
7364         /* set up vector assignment tracking */
7365         size = sizeof(struct i40e_lump_tracking)
7366                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
7367         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7368         if (!pf->irq_pile) {
7369                 kfree(pf->qp_pile);
7370                 err = -ENOMEM;
7371                 goto sw_init_done;
7372         }
7373         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
7374         pf->irq_pile->search_hint = 0;
7375
7376         pf->tx_timeout_recovery_level = 1;
7377
7378         mutex_init(&pf->switch_mutex);
7379
7380 sw_init_done:
7381         return err;
7382 }
7383
7384 /**
7385  * i40e_set_ntuple - set the ntuple feature flag and take action
7386  * @pf: board private structure to initialize
7387  * @features: the feature set that the stack is suggesting
7388  *
7389  * returns a bool to indicate if reset needs to happen
7390  **/
7391 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7392 {
7393         bool need_reset = false;
7394
7395         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7396          * the state changed, we need to reset.
7397          */
7398         if (features & NETIF_F_NTUPLE) {
7399                 /* Enable filters and mark for reset */
7400                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7401                         need_reset = true;
7402                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7403         } else {
7404                 /* turn off filters, mark for reset and clear SW filter list */
7405                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7406                         need_reset = true;
7407                         i40e_fdir_filter_exit(pf);
7408                 }
7409                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7410                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7411                 /* reset fd counters */
7412                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7413                 pf->fdir_pf_active_filters = 0;
7414                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7415                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7416                 /* if ATR was auto disabled it can be re-enabled. */
7417                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
7418                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
7419                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
7420         }
7421         return need_reset;
7422 }
7423
7424 /**
7425  * i40e_set_features - set the netdev feature flags
7426  * @netdev: ptr to the netdev being adjusted
7427  * @features: the feature set that the stack is suggesting
7428  **/
7429 static int i40e_set_features(struct net_device *netdev,
7430                              netdev_features_t features)
7431 {
7432         struct i40e_netdev_priv *np = netdev_priv(netdev);
7433         struct i40e_vsi *vsi = np->vsi;
7434         struct i40e_pf *pf = vsi->back;
7435         bool need_reset;
7436
7437         if (features & NETIF_F_HW_VLAN_CTAG_RX)
7438                 i40e_vlan_stripping_enable(vsi);
7439         else
7440                 i40e_vlan_stripping_disable(vsi);
7441
7442         need_reset = i40e_set_ntuple(pf, features);
7443
7444         if (need_reset)
7445                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7446
7447         return 0;
7448 }
7449
7450 #ifdef CONFIG_I40E_VXLAN
7451 /**
7452  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
7453  * @pf: board private structure
7454  * @port: The UDP port to look up
7455  *
7456  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
7457  **/
7458 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
7459 {
7460         u8 i;
7461
7462         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7463                 if (pf->vxlan_ports[i] == port)
7464                         return i;
7465         }
7466
7467         return i;
7468 }
7469
7470 /**
7471  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
7472  * @netdev: This physical port's netdev
7473  * @sa_family: Socket Family that VXLAN is notifying us about
7474  * @port: New UDP port number that VXLAN started listening to
7475  **/
7476 static void i40e_add_vxlan_port(struct net_device *netdev,
7477                                 sa_family_t sa_family, __be16 port)
7478 {
7479         struct i40e_netdev_priv *np = netdev_priv(netdev);
7480         struct i40e_vsi *vsi = np->vsi;
7481         struct i40e_pf *pf = vsi->back;
7482         u8 next_idx;
7483         u8 idx;
7484
7485         if (sa_family == AF_INET6)
7486                 return;
7487
7488         idx = i40e_get_vxlan_port_idx(pf, port);
7489
7490         /* Check if port already exists */
7491         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7492                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
7493                 return;
7494         }
7495
7496         /* Now check if there is space to add the new port */
7497         next_idx = i40e_get_vxlan_port_idx(pf, 0);
7498
7499         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7500                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
7501                             ntohs(port));
7502                 return;
7503         }
7504
7505         /* New port: add it and mark its index in the bitmap */
7506         pf->vxlan_ports[next_idx] = port;
7507         pf->pending_vxlan_bitmap |= (1 << next_idx);
7508
7509         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7510 }
7511
7512 /**
7513  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
7514  * @netdev: This physical port's netdev
7515  * @sa_family: Socket Family that VXLAN is notifying us about
7516  * @port: UDP port number that VXLAN stopped listening to
7517  **/
7518 static void i40e_del_vxlan_port(struct net_device *netdev,
7519                                 sa_family_t sa_family, __be16 port)
7520 {
7521         struct i40e_netdev_priv *np = netdev_priv(netdev);
7522         struct i40e_vsi *vsi = np->vsi;
7523         struct i40e_pf *pf = vsi->back;
7524         u8 idx;
7525
7526         if (sa_family == AF_INET6)
7527                 return;
7528
7529         idx = i40e_get_vxlan_port_idx(pf, port);
7530
7531         /* Check if port already exists */
7532         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7533                 /* if port exists, set it to 0 (mark for deletion)
7534                  * and make it pending
7535                  */
7536                 pf->vxlan_ports[idx] = 0;
7537
7538                 pf->pending_vxlan_bitmap |= (1 << idx);
7539
7540                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7541         } else {
7542                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
7543                             ntohs(port));
7544         }
7545 }
7546
7547 #endif
7548 static int i40e_get_phys_port_id(struct net_device *netdev,
7549                                  struct netdev_phys_item_id *ppid)
7550 {
7551         struct i40e_netdev_priv *np = netdev_priv(netdev);
7552         struct i40e_pf *pf = np->vsi->back;
7553         struct i40e_hw *hw = &pf->hw;
7554
7555         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
7556                 return -EOPNOTSUPP;
7557
7558         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
7559         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
7560
7561         return 0;
7562 }
7563
7564 /**
7565  * i40e_ndo_fdb_add - add an entry to the hardware database
7566  * @ndm: the input from the stack
7567  * @tb: pointer to array of nladdr (unused)
7568  * @dev: the net device pointer
7569  * @addr: the MAC address entry being added
7570  * @flags: instructions from stack about fdb operation
7571  */
7572 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
7573                             struct net_device *dev,
7574                             const unsigned char *addr, u16 vid,
7575                             u16 flags)
7576 {
7577         struct i40e_netdev_priv *np = netdev_priv(dev);
7578         struct i40e_pf *pf = np->vsi->back;
7579         int err = 0;
7580
7581         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
7582                 return -EOPNOTSUPP;
7583
7584         if (vid) {
7585                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
7586                 return -EINVAL;
7587         }
7588
7589         /* Hardware does not support aging addresses so if a
7590          * ndm_state is given only allow permanent addresses
7591          */
7592         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
7593                 netdev_info(dev, "FDB only supports static addresses\n");
7594                 return -EINVAL;
7595         }
7596
7597         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
7598                 err = dev_uc_add_excl(dev, addr);
7599         else if (is_multicast_ether_addr(addr))
7600                 err = dev_mc_add_excl(dev, addr);
7601         else
7602                 err = -EINVAL;
7603
7604         /* Only return duplicate errors if NLM_F_EXCL is set */
7605         if (err == -EEXIST && !(flags & NLM_F_EXCL))
7606                 err = 0;
7607
7608         return err;
7609 }
7610
7611 static const struct net_device_ops i40e_netdev_ops = {
7612         .ndo_open               = i40e_open,
7613         .ndo_stop               = i40e_close,
7614         .ndo_start_xmit         = i40e_lan_xmit_frame,
7615         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
7616         .ndo_set_rx_mode        = i40e_set_rx_mode,
7617         .ndo_validate_addr      = eth_validate_addr,
7618         .ndo_set_mac_address    = i40e_set_mac,
7619         .ndo_change_mtu         = i40e_change_mtu,
7620         .ndo_do_ioctl           = i40e_ioctl,
7621         .ndo_tx_timeout         = i40e_tx_timeout,
7622         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
7623         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
7624 #ifdef CONFIG_NET_POLL_CONTROLLER
7625         .ndo_poll_controller    = i40e_netpoll,
7626 #endif
7627         .ndo_setup_tc           = i40e_setup_tc,
7628 #ifdef I40E_FCOE
7629         .ndo_fcoe_enable        = i40e_fcoe_enable,
7630         .ndo_fcoe_disable       = i40e_fcoe_disable,
7631 #endif
7632         .ndo_set_features       = i40e_set_features,
7633         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
7634         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
7635         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
7636         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
7637         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
7638         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
7639 #ifdef CONFIG_I40E_VXLAN
7640         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
7641         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
7642 #endif
7643         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
7644         .ndo_fdb_add            = i40e_ndo_fdb_add,
7645 };
7646
7647 /**
7648  * i40e_config_netdev - Setup the netdev flags
7649  * @vsi: the VSI being configured
7650  *
7651  * Returns 0 on success, negative value on failure
7652  **/
7653 static int i40e_config_netdev(struct i40e_vsi *vsi)
7654 {
7655         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
7656         struct i40e_pf *pf = vsi->back;
7657         struct i40e_hw *hw = &pf->hw;
7658         struct i40e_netdev_priv *np;
7659         struct net_device *netdev;
7660         u8 mac_addr[ETH_ALEN];
7661         int etherdev_size;
7662
7663         etherdev_size = sizeof(struct i40e_netdev_priv);
7664         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
7665         if (!netdev)
7666                 return -ENOMEM;
7667
7668         vsi->netdev = netdev;
7669         np = netdev_priv(netdev);
7670         np->vsi = vsi;
7671
7672         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
7673                                   NETIF_F_GSO_UDP_TUNNEL |
7674                                   NETIF_F_TSO;
7675
7676         netdev->features = NETIF_F_SG                  |
7677                            NETIF_F_IP_CSUM             |
7678                            NETIF_F_SCTP_CSUM           |
7679                            NETIF_F_HIGHDMA             |
7680                            NETIF_F_GSO_UDP_TUNNEL      |
7681                            NETIF_F_HW_VLAN_CTAG_TX     |
7682                            NETIF_F_HW_VLAN_CTAG_RX     |
7683                            NETIF_F_HW_VLAN_CTAG_FILTER |
7684                            NETIF_F_IPV6_CSUM           |
7685                            NETIF_F_TSO                 |
7686                            NETIF_F_TSO_ECN             |
7687                            NETIF_F_TSO6                |
7688                            NETIF_F_RXCSUM              |
7689                            NETIF_F_RXHASH              |
7690                            0;
7691
7692         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
7693                 netdev->features |= NETIF_F_NTUPLE;
7694
7695         /* copy netdev features into list of user selectable features */
7696         netdev->hw_features |= netdev->features;
7697
7698         if (vsi->type == I40E_VSI_MAIN) {
7699                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
7700                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
7701                 /* The following steps are necessary to prevent reception
7702                  * of tagged packets - some older NVM configurations load a
7703                  * default a MAC-VLAN filter that accepts any tagged packet
7704                  * which must be replaced by a normal filter.
7705                  */
7706                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
7707                         i40e_add_filter(vsi, mac_addr,
7708                                         I40E_VLAN_ANY, false, true);
7709         } else {
7710                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
7711                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
7712                          pf->vsi[pf->lan_vsi]->netdev->name);
7713                 random_ether_addr(mac_addr);
7714                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
7715         }
7716         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
7717
7718         ether_addr_copy(netdev->dev_addr, mac_addr);
7719         ether_addr_copy(netdev->perm_addr, mac_addr);
7720         /* vlan gets same features (except vlan offload)
7721          * after any tweaks for specific VSI types
7722          */
7723         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
7724                                                      NETIF_F_HW_VLAN_CTAG_RX |
7725                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
7726         netdev->priv_flags |= IFF_UNICAST_FLT;
7727         netdev->priv_flags |= IFF_SUPP_NOFCS;
7728         /* Setup netdev TC information */
7729         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
7730
7731         netdev->netdev_ops = &i40e_netdev_ops;
7732         netdev->watchdog_timeo = 5 * HZ;
7733         i40e_set_ethtool_ops(netdev);
7734 #ifdef I40E_FCOE
7735         i40e_fcoe_config_netdev(netdev, vsi);
7736 #endif
7737
7738         return 0;
7739 }
7740
7741 /**
7742  * i40e_vsi_delete - Delete a VSI from the switch
7743  * @vsi: the VSI being removed
7744  *
7745  * Returns 0 on success, negative value on failure
7746  **/
7747 static void i40e_vsi_delete(struct i40e_vsi *vsi)
7748 {
7749         /* remove default VSI is not allowed */
7750         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
7751                 return;
7752
7753         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
7754 }
7755
7756 /**
7757  * i40e_add_vsi - Add a VSI to the switch
7758  * @vsi: the VSI being configured
7759  *
7760  * This initializes a VSI context depending on the VSI type to be added and
7761  * passes it down to the add_vsi aq command.
7762  **/
7763 static int i40e_add_vsi(struct i40e_vsi *vsi)
7764 {
7765         int ret = -ENODEV;
7766         struct i40e_mac_filter *f, *ftmp;
7767         struct i40e_pf *pf = vsi->back;
7768         struct i40e_hw *hw = &pf->hw;
7769         struct i40e_vsi_context ctxt;
7770         u8 enabled_tc = 0x1; /* TC0 enabled */
7771         int f_count = 0;
7772
7773         memset(&ctxt, 0, sizeof(ctxt));
7774         switch (vsi->type) {
7775         case I40E_VSI_MAIN:
7776                 /* The PF's main VSI is already setup as part of the
7777                  * device initialization, so we'll not bother with
7778                  * the add_vsi call, but we will retrieve the current
7779                  * VSI context.
7780                  */
7781                 ctxt.seid = pf->main_vsi_seid;
7782                 ctxt.pf_num = pf->hw.pf_id;
7783                 ctxt.vf_num = 0;
7784                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
7785                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7786                 if (ret) {
7787                         dev_info(&pf->pdev->dev,
7788                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
7789                                  ret, pf->hw.aq.asq_last_status);
7790                         return -ENOENT;
7791                 }
7792                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7793                 vsi->info.valid_sections = 0;
7794
7795                 vsi->seid = ctxt.seid;
7796                 vsi->id = ctxt.vsi_number;
7797
7798                 enabled_tc = i40e_pf_get_tc_map(pf);
7799
7800                 /* MFP mode setup queue map and update VSI */
7801                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
7802                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
7803                         memset(&ctxt, 0, sizeof(ctxt));
7804                         ctxt.seid = pf->main_vsi_seid;
7805                         ctxt.pf_num = pf->hw.pf_id;
7806                         ctxt.vf_num = 0;
7807                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
7808                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
7809                         if (ret) {
7810                                 dev_info(&pf->pdev->dev,
7811                                          "update vsi failed, aq_err=%d\n",
7812                                          pf->hw.aq.asq_last_status);
7813                                 ret = -ENOENT;
7814                                 goto err;
7815                         }
7816                         /* update the local VSI info queue map */
7817                         i40e_vsi_update_queue_map(vsi, &ctxt);
7818                         vsi->info.valid_sections = 0;
7819                 } else {
7820                         /* Default/Main VSI is only enabled for TC0
7821                          * reconfigure it to enable all TCs that are
7822                          * available on the port in SFP mode.
7823                          * For MFP case the iSCSI PF would use this
7824                          * flow to enable LAN+iSCSI TC.
7825                          */
7826                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
7827                         if (ret) {
7828                                 dev_info(&pf->pdev->dev,
7829                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
7830                                          enabled_tc, ret,
7831                                          pf->hw.aq.asq_last_status);
7832                                 ret = -ENOENT;
7833                         }
7834                 }
7835                 break;
7836
7837         case I40E_VSI_FDIR:
7838                 ctxt.pf_num = hw->pf_id;
7839                 ctxt.vf_num = 0;
7840                 ctxt.uplink_seid = vsi->uplink_seid;
7841                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
7842                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7843                 ctxt.info.valid_sections |=
7844                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7845                 ctxt.info.switch_id =
7846                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7847                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7848                 break;
7849
7850         case I40E_VSI_VMDQ2:
7851                 ctxt.pf_num = hw->pf_id;
7852                 ctxt.vf_num = 0;
7853                 ctxt.uplink_seid = vsi->uplink_seid;
7854                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
7855                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
7856
7857                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7858
7859                 /* This VSI is connected to VEB so the switch_id
7860                  * should be set to zero by default.
7861                  */
7862                 ctxt.info.switch_id = 0;
7863                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7864
7865                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7866                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7867                 break;
7868
7869         case I40E_VSI_SRIOV:
7870                 ctxt.pf_num = hw->pf_id;
7871                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
7872                 ctxt.uplink_seid = vsi->uplink_seid;
7873                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
7874                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
7875
7876                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7877
7878                 /* This VSI is connected to VEB so the switch_id
7879                  * should be set to zero by default.
7880                  */
7881                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7882
7883                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
7884                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
7885                 if (pf->vf[vsi->vf_id].spoofchk) {
7886                         ctxt.info.valid_sections |=
7887                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
7888                         ctxt.info.sec_flags |=
7889                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
7890                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
7891                 }
7892                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7893                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7894                 break;
7895
7896 #ifdef I40E_FCOE
7897         case I40E_VSI_FCOE:
7898                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
7899                 if (ret) {
7900                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
7901                         return ret;
7902                 }
7903                 break;
7904
7905 #endif /* I40E_FCOE */
7906         default:
7907                 return -ENODEV;
7908         }
7909
7910         if (vsi->type != I40E_VSI_MAIN) {
7911                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
7912                 if (ret) {
7913                         dev_info(&vsi->back->pdev->dev,
7914                                  "add vsi failed, aq_err=%d\n",
7915                                  vsi->back->hw.aq.asq_last_status);
7916                         ret = -ENOENT;
7917                         goto err;
7918                 }
7919                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7920                 vsi->info.valid_sections = 0;
7921                 vsi->seid = ctxt.seid;
7922                 vsi->id = ctxt.vsi_number;
7923         }
7924
7925         /* If macvlan filters already exist, force them to get loaded */
7926         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
7927                 f->changed = true;
7928                 f_count++;
7929
7930                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
7931                         struct i40e_aqc_remove_macvlan_element_data element;
7932
7933                         memset(&element, 0, sizeof(element));
7934                         ether_addr_copy(element.mac_addr, f->macaddr);
7935                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
7936                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
7937                                                      &element, 1, NULL);
7938                         if (ret) {
7939                                 /* some older FW has a different default */
7940                                 element.flags |=
7941                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
7942                                 i40e_aq_remove_macvlan(hw, vsi->seid,
7943                                                        &element, 1, NULL);
7944                         }
7945
7946                         i40e_aq_mac_address_write(hw,
7947                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
7948                                                   f->macaddr, NULL);
7949                 }
7950         }
7951         if (f_count) {
7952                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
7953                 pf->flags |= I40E_FLAG_FILTER_SYNC;
7954         }
7955
7956         /* Update VSI BW information */
7957         ret = i40e_vsi_get_bw_info(vsi);
7958         if (ret) {
7959                 dev_info(&pf->pdev->dev,
7960                          "couldn't get vsi bw info, err %d, aq_err %d\n",
7961                          ret, pf->hw.aq.asq_last_status);
7962                 /* VSI is already added so not tearing that up */
7963                 ret = 0;
7964         }
7965
7966 err:
7967         return ret;
7968 }
7969
7970 /**
7971  * i40e_vsi_release - Delete a VSI and free its resources
7972  * @vsi: the VSI being removed
7973  *
7974  * Returns 0 on success or < 0 on error
7975  **/
7976 int i40e_vsi_release(struct i40e_vsi *vsi)
7977 {
7978         struct i40e_mac_filter *f, *ftmp;
7979         struct i40e_veb *veb = NULL;
7980         struct i40e_pf *pf;
7981         u16 uplink_seid;
7982         int i, n;
7983
7984         pf = vsi->back;
7985
7986         /* release of a VEB-owner or last VSI is not allowed */
7987         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
7988                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
7989                          vsi->seid, vsi->uplink_seid);
7990                 return -ENODEV;
7991         }
7992         if (vsi == pf->vsi[pf->lan_vsi] &&
7993             !test_bit(__I40E_DOWN, &pf->state)) {
7994                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
7995                 return -ENODEV;
7996         }
7997
7998         uplink_seid = vsi->uplink_seid;
7999         if (vsi->type != I40E_VSI_SRIOV) {
8000                 if (vsi->netdev_registered) {
8001                         vsi->netdev_registered = false;
8002                         if (vsi->netdev) {
8003                                 /* results in a call to i40e_close() */
8004                                 unregister_netdev(vsi->netdev);
8005                         }
8006                 } else {
8007                         i40e_vsi_close(vsi);
8008                 }
8009                 i40e_vsi_disable_irq(vsi);
8010         }
8011
8012         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8013                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8014                                 f->is_vf, f->is_netdev);
8015         i40e_sync_vsi_filters(vsi);
8016
8017         i40e_vsi_delete(vsi);
8018         i40e_vsi_free_q_vectors(vsi);
8019         if (vsi->netdev) {
8020                 free_netdev(vsi->netdev);
8021                 vsi->netdev = NULL;
8022         }
8023         i40e_vsi_clear_rings(vsi);
8024         i40e_vsi_clear(vsi);
8025
8026         /* If this was the last thing on the VEB, except for the
8027          * controlling VSI, remove the VEB, which puts the controlling
8028          * VSI onto the next level down in the switch.
8029          *
8030          * Well, okay, there's one more exception here: don't remove
8031          * the orphan VEBs yet.  We'll wait for an explicit remove request
8032          * from up the network stack.
8033          */
8034         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8035                 if (pf->vsi[i] &&
8036                     pf->vsi[i]->uplink_seid == uplink_seid &&
8037                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8038                         n++;      /* count the VSIs */
8039                 }
8040         }
8041         for (i = 0; i < I40E_MAX_VEB; i++) {
8042                 if (!pf->veb[i])
8043                         continue;
8044                 if (pf->veb[i]->uplink_seid == uplink_seid)
8045                         n++;     /* count the VEBs */
8046                 if (pf->veb[i]->seid == uplink_seid)
8047                         veb = pf->veb[i];
8048         }
8049         if (n == 0 && veb && veb->uplink_seid != 0)
8050                 i40e_veb_release(veb);
8051
8052         return 0;
8053 }
8054
8055 /**
8056  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8057  * @vsi: ptr to the VSI
8058  *
8059  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8060  * corresponding SW VSI structure and initializes num_queue_pairs for the
8061  * newly allocated VSI.
8062  *
8063  * Returns 0 on success or negative on failure
8064  **/
8065 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8066 {
8067         int ret = -ENOENT;
8068         struct i40e_pf *pf = vsi->back;
8069
8070         if (vsi->q_vectors[0]) {
8071                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8072                          vsi->seid);
8073                 return -EEXIST;
8074         }
8075
8076         if (vsi->base_vector) {
8077                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8078                          vsi->seid, vsi->base_vector);
8079                 return -EEXIST;
8080         }
8081
8082         ret = i40e_vsi_alloc_q_vectors(vsi);
8083         if (ret) {
8084                 dev_info(&pf->pdev->dev,
8085                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8086                          vsi->num_q_vectors, vsi->seid, ret);
8087                 vsi->num_q_vectors = 0;
8088                 goto vector_setup_out;
8089         }
8090
8091         if (vsi->num_q_vectors)
8092                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8093                                                  vsi->num_q_vectors, vsi->idx);
8094         if (vsi->base_vector < 0) {
8095                 dev_info(&pf->pdev->dev,
8096                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8097                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8098                 i40e_vsi_free_q_vectors(vsi);
8099                 ret = -ENOENT;
8100                 goto vector_setup_out;
8101         }
8102
8103 vector_setup_out:
8104         return ret;
8105 }
8106
8107 /**
8108  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8109  * @vsi: pointer to the vsi.
8110  *
8111  * This re-allocates a vsi's queue resources.
8112  *
8113  * Returns pointer to the successfully allocated and configured VSI sw struct
8114  * on success, otherwise returns NULL on failure.
8115  **/
8116 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8117 {
8118         struct i40e_pf *pf = vsi->back;
8119         u8 enabled_tc;
8120         int ret;
8121
8122         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8123         i40e_vsi_clear_rings(vsi);
8124
8125         i40e_vsi_free_arrays(vsi, false);
8126         i40e_set_num_rings_in_vsi(vsi);
8127         ret = i40e_vsi_alloc_arrays(vsi, false);
8128         if (ret)
8129                 goto err_vsi;
8130
8131         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8132         if (ret < 0) {
8133                 dev_info(&pf->pdev->dev,
8134                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8135                          vsi->alloc_queue_pairs, vsi->seid, ret);
8136                 goto err_vsi;
8137         }
8138         vsi->base_queue = ret;
8139
8140         /* Update the FW view of the VSI. Force a reset of TC and queue
8141          * layout configurations.
8142          */
8143         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8144         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8145         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8146         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8147
8148         /* assign it some queues */
8149         ret = i40e_alloc_rings(vsi);
8150         if (ret)
8151                 goto err_rings;
8152
8153         /* map all of the rings to the q_vectors */
8154         i40e_vsi_map_rings_to_vectors(vsi);
8155         return vsi;
8156
8157 err_rings:
8158         i40e_vsi_free_q_vectors(vsi);
8159         if (vsi->netdev_registered) {
8160                 vsi->netdev_registered = false;
8161                 unregister_netdev(vsi->netdev);
8162                 free_netdev(vsi->netdev);
8163                 vsi->netdev = NULL;
8164         }
8165         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8166 err_vsi:
8167         i40e_vsi_clear(vsi);
8168         return NULL;
8169 }
8170
8171 /**
8172  * i40e_vsi_setup - Set up a VSI by a given type
8173  * @pf: board private structure
8174  * @type: VSI type
8175  * @uplink_seid: the switch element to link to
8176  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8177  *
8178  * This allocates the sw VSI structure and its queue resources, then add a VSI
8179  * to the identified VEB.
8180  *
8181  * Returns pointer to the successfully allocated and configure VSI sw struct on
8182  * success, otherwise returns NULL on failure.
8183  **/
8184 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8185                                 u16 uplink_seid, u32 param1)
8186 {
8187         struct i40e_vsi *vsi = NULL;
8188         struct i40e_veb *veb = NULL;
8189         int ret, i;
8190         int v_idx;
8191
8192         /* The requested uplink_seid must be either
8193          *     - the PF's port seid
8194          *              no VEB is needed because this is the PF
8195          *              or this is a Flow Director special case VSI
8196          *     - seid of an existing VEB
8197          *     - seid of a VSI that owns an existing VEB
8198          *     - seid of a VSI that doesn't own a VEB
8199          *              a new VEB is created and the VSI becomes the owner
8200          *     - seid of the PF VSI, which is what creates the first VEB
8201          *              this is a special case of the previous
8202          *
8203          * Find which uplink_seid we were given and create a new VEB if needed
8204          */
8205         for (i = 0; i < I40E_MAX_VEB; i++) {
8206                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8207                         veb = pf->veb[i];
8208                         break;
8209                 }
8210         }
8211
8212         if (!veb && uplink_seid != pf->mac_seid) {
8213
8214                 for (i = 0; i < pf->num_alloc_vsi; i++) {
8215                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8216                                 vsi = pf->vsi[i];
8217                                 break;
8218                         }
8219                 }
8220                 if (!vsi) {
8221                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8222                                  uplink_seid);
8223                         return NULL;
8224                 }
8225
8226                 if (vsi->uplink_seid == pf->mac_seid)
8227                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8228                                              vsi->tc_config.enabled_tc);
8229                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8230                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8231                                              vsi->tc_config.enabled_tc);
8232                 if (veb) {
8233                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
8234                                 dev_info(&vsi->back->pdev->dev,
8235                                          "%s: New VSI creation error, uplink seid of LAN VSI expected.\n",
8236                                          __func__);
8237                                 return NULL;
8238                         }
8239                         i40e_enable_pf_switch_lb(pf);
8240                 }
8241                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8242                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8243                                 veb = pf->veb[i];
8244                 }
8245                 if (!veb) {
8246                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
8247                         return NULL;
8248                 }
8249
8250                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8251                 uplink_seid = veb->seid;
8252         }
8253
8254         /* get vsi sw struct */
8255         v_idx = i40e_vsi_mem_alloc(pf, type);
8256         if (v_idx < 0)
8257                 goto err_alloc;
8258         vsi = pf->vsi[v_idx];
8259         if (!vsi)
8260                 goto err_alloc;
8261         vsi->type = type;
8262         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
8263
8264         if (type == I40E_VSI_MAIN)
8265                 pf->lan_vsi = v_idx;
8266         else if (type == I40E_VSI_SRIOV)
8267                 vsi->vf_id = param1;
8268         /* assign it some queues */
8269         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
8270                                 vsi->idx);
8271         if (ret < 0) {
8272                 dev_info(&pf->pdev->dev,
8273                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8274                          vsi->alloc_queue_pairs, vsi->seid, ret);
8275                 goto err_vsi;
8276         }
8277         vsi->base_queue = ret;
8278
8279         /* get a VSI from the hardware */
8280         vsi->uplink_seid = uplink_seid;
8281         ret = i40e_add_vsi(vsi);
8282         if (ret)
8283                 goto err_vsi;
8284
8285         switch (vsi->type) {
8286         /* setup the netdev if needed */
8287         case I40E_VSI_MAIN:
8288         case I40E_VSI_VMDQ2:
8289         case I40E_VSI_FCOE:
8290                 ret = i40e_config_netdev(vsi);
8291                 if (ret)
8292                         goto err_netdev;
8293                 ret = register_netdev(vsi->netdev);
8294                 if (ret)
8295                         goto err_netdev;
8296                 vsi->netdev_registered = true;
8297                 netif_carrier_off(vsi->netdev);
8298 #ifdef CONFIG_I40E_DCB
8299                 /* Setup DCB netlink interface */
8300                 i40e_dcbnl_setup(vsi);
8301 #endif /* CONFIG_I40E_DCB */
8302                 /* fall through */
8303
8304         case I40E_VSI_FDIR:
8305                 /* set up vectors and rings if needed */
8306                 ret = i40e_vsi_setup_vectors(vsi);
8307                 if (ret)
8308                         goto err_msix;
8309
8310                 ret = i40e_alloc_rings(vsi);
8311                 if (ret)
8312                         goto err_rings;
8313
8314                 /* map all of the rings to the q_vectors */
8315                 i40e_vsi_map_rings_to_vectors(vsi);
8316
8317                 i40e_vsi_reset_stats(vsi);
8318                 break;
8319
8320         default:
8321                 /* no netdev or rings for the other VSI types */
8322                 break;
8323         }
8324
8325         return vsi;
8326
8327 err_rings:
8328         i40e_vsi_free_q_vectors(vsi);
8329 err_msix:
8330         if (vsi->netdev_registered) {
8331                 vsi->netdev_registered = false;
8332                 unregister_netdev(vsi->netdev);
8333                 free_netdev(vsi->netdev);
8334                 vsi->netdev = NULL;
8335         }
8336 err_netdev:
8337         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8338 err_vsi:
8339         i40e_vsi_clear(vsi);
8340 err_alloc:
8341         return NULL;
8342 }
8343
8344 /**
8345  * i40e_veb_get_bw_info - Query VEB BW information
8346  * @veb: the veb to query
8347  *
8348  * Query the Tx scheduler BW configuration data for given VEB
8349  **/
8350 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
8351 {
8352         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
8353         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
8354         struct i40e_pf *pf = veb->pf;
8355         struct i40e_hw *hw = &pf->hw;
8356         u32 tc_bw_max;
8357         int ret = 0;
8358         int i;
8359
8360         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
8361                                                   &bw_data, NULL);
8362         if (ret) {
8363                 dev_info(&pf->pdev->dev,
8364                          "query veb bw config failed, aq_err=%d\n",
8365                          hw->aq.asq_last_status);
8366                 goto out;
8367         }
8368
8369         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
8370                                                    &ets_data, NULL);
8371         if (ret) {
8372                 dev_info(&pf->pdev->dev,
8373                          "query veb bw ets config failed, aq_err=%d\n",
8374                          hw->aq.asq_last_status);
8375                 goto out;
8376         }
8377
8378         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
8379         veb->bw_max_quanta = ets_data.tc_bw_max;
8380         veb->is_abs_credits = bw_data.absolute_credits_enable;
8381         veb->enabled_tc = ets_data.tc_valid_bits;
8382         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
8383                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
8384         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
8385                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
8386                 veb->bw_tc_limit_credits[i] =
8387                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
8388                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
8389         }
8390
8391 out:
8392         return ret;
8393 }
8394
8395 /**
8396  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
8397  * @pf: board private structure
8398  *
8399  * On error: returns error code (negative)
8400  * On success: returns vsi index in PF (positive)
8401  **/
8402 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
8403 {
8404         int ret = -ENOENT;
8405         struct i40e_veb *veb;
8406         int i;
8407
8408         /* Need to protect the allocation of switch elements at the PF level */
8409         mutex_lock(&pf->switch_mutex);
8410
8411         /* VEB list may be fragmented if VEB creation/destruction has
8412          * been happening.  We can afford to do a quick scan to look
8413          * for any free slots in the list.
8414          *
8415          * find next empty veb slot, looping back around if necessary
8416          */
8417         i = 0;
8418         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
8419                 i++;
8420         if (i >= I40E_MAX_VEB) {
8421                 ret = -ENOMEM;
8422                 goto err_alloc_veb;  /* out of VEB slots! */
8423         }
8424
8425         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
8426         if (!veb) {
8427                 ret = -ENOMEM;
8428                 goto err_alloc_veb;
8429         }
8430         veb->pf = pf;
8431         veb->idx = i;
8432         veb->enabled_tc = 1;
8433
8434         pf->veb[i] = veb;
8435         ret = i;
8436 err_alloc_veb:
8437         mutex_unlock(&pf->switch_mutex);
8438         return ret;
8439 }
8440
8441 /**
8442  * i40e_switch_branch_release - Delete a branch of the switch tree
8443  * @branch: where to start deleting
8444  *
8445  * This uses recursion to find the tips of the branch to be
8446  * removed, deleting until we get back to and can delete this VEB.
8447  **/
8448 static void i40e_switch_branch_release(struct i40e_veb *branch)
8449 {
8450         struct i40e_pf *pf = branch->pf;
8451         u16 branch_seid = branch->seid;
8452         u16 veb_idx = branch->idx;
8453         int i;
8454
8455         /* release any VEBs on this VEB - RECURSION */
8456         for (i = 0; i < I40E_MAX_VEB; i++) {
8457                 if (!pf->veb[i])
8458                         continue;
8459                 if (pf->veb[i]->uplink_seid == branch->seid)
8460                         i40e_switch_branch_release(pf->veb[i]);
8461         }
8462
8463         /* Release the VSIs on this VEB, but not the owner VSI.
8464          *
8465          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
8466          *       the VEB itself, so don't use (*branch) after this loop.
8467          */
8468         for (i = 0; i < pf->num_alloc_vsi; i++) {
8469                 if (!pf->vsi[i])
8470                         continue;
8471                 if (pf->vsi[i]->uplink_seid == branch_seid &&
8472                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8473                         i40e_vsi_release(pf->vsi[i]);
8474                 }
8475         }
8476
8477         /* There's one corner case where the VEB might not have been
8478          * removed, so double check it here and remove it if needed.
8479          * This case happens if the veb was created from the debugfs
8480          * commands and no VSIs were added to it.
8481          */
8482         if (pf->veb[veb_idx])
8483                 i40e_veb_release(pf->veb[veb_idx]);
8484 }
8485
8486 /**
8487  * i40e_veb_clear - remove veb struct
8488  * @veb: the veb to remove
8489  **/
8490 static void i40e_veb_clear(struct i40e_veb *veb)
8491 {
8492         if (!veb)
8493                 return;
8494
8495         if (veb->pf) {
8496                 struct i40e_pf *pf = veb->pf;
8497
8498                 mutex_lock(&pf->switch_mutex);
8499                 if (pf->veb[veb->idx] == veb)
8500                         pf->veb[veb->idx] = NULL;
8501                 mutex_unlock(&pf->switch_mutex);
8502         }
8503
8504         kfree(veb);
8505 }
8506
8507 /**
8508  * i40e_veb_release - Delete a VEB and free its resources
8509  * @veb: the VEB being removed
8510  **/
8511 void i40e_veb_release(struct i40e_veb *veb)
8512 {
8513         struct i40e_vsi *vsi = NULL;
8514         struct i40e_pf *pf;
8515         int i, n = 0;
8516
8517         pf = veb->pf;
8518
8519         /* find the remaining VSI and check for extras */
8520         for (i = 0; i < pf->num_alloc_vsi; i++) {
8521                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
8522                         n++;
8523                         vsi = pf->vsi[i];
8524                 }
8525         }
8526         if (n != 1) {
8527                 dev_info(&pf->pdev->dev,
8528                          "can't remove VEB %d with %d VSIs left\n",
8529                          veb->seid, n);
8530                 return;
8531         }
8532
8533         /* move the remaining VSI to uplink veb */
8534         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
8535         if (veb->uplink_seid) {
8536                 vsi->uplink_seid = veb->uplink_seid;
8537                 if (veb->uplink_seid == pf->mac_seid)
8538                         vsi->veb_idx = I40E_NO_VEB;
8539                 else
8540                         vsi->veb_idx = veb->veb_idx;
8541         } else {
8542                 /* floating VEB */
8543                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
8544                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
8545         }
8546
8547         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
8548         i40e_veb_clear(veb);
8549 }
8550
8551 /**
8552  * i40e_add_veb - create the VEB in the switch
8553  * @veb: the VEB to be instantiated
8554  * @vsi: the controlling VSI
8555  **/
8556 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
8557 {
8558         bool is_default = false;
8559         bool is_cloud = false;
8560         int ret;
8561
8562         /* get a VEB from the hardware */
8563         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
8564                               veb->enabled_tc, is_default,
8565                               is_cloud, &veb->seid, NULL);
8566         if (ret) {
8567                 dev_info(&veb->pf->pdev->dev,
8568                          "couldn't add VEB, err %d, aq_err %d\n",
8569                          ret, veb->pf->hw.aq.asq_last_status);
8570                 return -EPERM;
8571         }
8572
8573         /* get statistics counter */
8574         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
8575                                          &veb->stats_idx, NULL, NULL, NULL);
8576         if (ret) {
8577                 dev_info(&veb->pf->pdev->dev,
8578                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
8579                          ret, veb->pf->hw.aq.asq_last_status);
8580                 return -EPERM;
8581         }
8582         ret = i40e_veb_get_bw_info(veb);
8583         if (ret) {
8584                 dev_info(&veb->pf->pdev->dev,
8585                          "couldn't get VEB bw info, err %d, aq_err %d\n",
8586                          ret, veb->pf->hw.aq.asq_last_status);
8587                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
8588                 return -ENOENT;
8589         }
8590
8591         vsi->uplink_seid = veb->seid;
8592         vsi->veb_idx = veb->idx;
8593         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8594
8595         return 0;
8596 }
8597
8598 /**
8599  * i40e_veb_setup - Set up a VEB
8600  * @pf: board private structure
8601  * @flags: VEB setup flags
8602  * @uplink_seid: the switch element to link to
8603  * @vsi_seid: the initial VSI seid
8604  * @enabled_tc: Enabled TC bit-map
8605  *
8606  * This allocates the sw VEB structure and links it into the switch
8607  * It is possible and legal for this to be a duplicate of an already
8608  * existing VEB.  It is also possible for both uplink and vsi seids
8609  * to be zero, in order to create a floating VEB.
8610  *
8611  * Returns pointer to the successfully allocated VEB sw struct on
8612  * success, otherwise returns NULL on failure.
8613  **/
8614 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
8615                                 u16 uplink_seid, u16 vsi_seid,
8616                                 u8 enabled_tc)
8617 {
8618         struct i40e_veb *veb, *uplink_veb = NULL;
8619         int vsi_idx, veb_idx;
8620         int ret;
8621
8622         /* if one seid is 0, the other must be 0 to create a floating relay */
8623         if ((uplink_seid == 0 || vsi_seid == 0) &&
8624             (uplink_seid + vsi_seid != 0)) {
8625                 dev_info(&pf->pdev->dev,
8626                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
8627                          uplink_seid, vsi_seid);
8628                 return NULL;
8629         }
8630
8631         /* make sure there is such a vsi and uplink */
8632         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
8633                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
8634                         break;
8635         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
8636                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
8637                          vsi_seid);
8638                 return NULL;
8639         }
8640
8641         if (uplink_seid && uplink_seid != pf->mac_seid) {
8642                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
8643                         if (pf->veb[veb_idx] &&
8644                             pf->veb[veb_idx]->seid == uplink_seid) {
8645                                 uplink_veb = pf->veb[veb_idx];
8646                                 break;
8647                         }
8648                 }
8649                 if (!uplink_veb) {
8650                         dev_info(&pf->pdev->dev,
8651                                  "uplink seid %d not found\n", uplink_seid);
8652                         return NULL;
8653                 }
8654         }
8655
8656         /* get veb sw struct */
8657         veb_idx = i40e_veb_mem_alloc(pf);
8658         if (veb_idx < 0)
8659                 goto err_alloc;
8660         veb = pf->veb[veb_idx];
8661         veb->flags = flags;
8662         veb->uplink_seid = uplink_seid;
8663         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
8664         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
8665
8666         /* create the VEB in the switch */
8667         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
8668         if (ret)
8669                 goto err_veb;
8670         if (vsi_idx == pf->lan_vsi)
8671                 pf->lan_veb = veb->idx;
8672
8673         return veb;
8674
8675 err_veb:
8676         i40e_veb_clear(veb);
8677 err_alloc:
8678         return NULL;
8679 }
8680
8681 /**
8682  * i40e_setup_pf_switch_element - set pf vars based on switch type
8683  * @pf: board private structure
8684  * @ele: element we are building info from
8685  * @num_reported: total number of elements
8686  * @printconfig: should we print the contents
8687  *
8688  * helper function to assist in extracting a few useful SEID values.
8689  **/
8690 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
8691                                 struct i40e_aqc_switch_config_element_resp *ele,
8692                                 u16 num_reported, bool printconfig)
8693 {
8694         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
8695         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
8696         u8 element_type = ele->element_type;
8697         u16 seid = le16_to_cpu(ele->seid);
8698
8699         if (printconfig)
8700                 dev_info(&pf->pdev->dev,
8701                          "type=%d seid=%d uplink=%d downlink=%d\n",
8702                          element_type, seid, uplink_seid, downlink_seid);
8703
8704         switch (element_type) {
8705         case I40E_SWITCH_ELEMENT_TYPE_MAC:
8706                 pf->mac_seid = seid;
8707                 break;
8708         case I40E_SWITCH_ELEMENT_TYPE_VEB:
8709                 /* Main VEB? */
8710                 if (uplink_seid != pf->mac_seid)
8711                         break;
8712                 if (pf->lan_veb == I40E_NO_VEB) {
8713                         int v;
8714
8715                         /* find existing or else empty VEB */
8716                         for (v = 0; v < I40E_MAX_VEB; v++) {
8717                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
8718                                         pf->lan_veb = v;
8719                                         break;
8720                                 }
8721                         }
8722                         if (pf->lan_veb == I40E_NO_VEB) {
8723                                 v = i40e_veb_mem_alloc(pf);
8724                                 if (v < 0)
8725                                         break;
8726                                 pf->lan_veb = v;
8727                         }
8728                 }
8729
8730                 pf->veb[pf->lan_veb]->seid = seid;
8731                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
8732                 pf->veb[pf->lan_veb]->pf = pf;
8733                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
8734                 break;
8735         case I40E_SWITCH_ELEMENT_TYPE_VSI:
8736                 if (num_reported != 1)
8737                         break;
8738                 /* This is immediately after a reset so we can assume this is
8739                  * the PF's VSI
8740                  */
8741                 pf->mac_seid = uplink_seid;
8742                 pf->pf_seid = downlink_seid;
8743                 pf->main_vsi_seid = seid;
8744                 if (printconfig)
8745                         dev_info(&pf->pdev->dev,
8746                                  "pf_seid=%d main_vsi_seid=%d\n",
8747                                  pf->pf_seid, pf->main_vsi_seid);
8748                 break;
8749         case I40E_SWITCH_ELEMENT_TYPE_PF:
8750         case I40E_SWITCH_ELEMENT_TYPE_VF:
8751         case I40E_SWITCH_ELEMENT_TYPE_EMP:
8752         case I40E_SWITCH_ELEMENT_TYPE_BMC:
8753         case I40E_SWITCH_ELEMENT_TYPE_PE:
8754         case I40E_SWITCH_ELEMENT_TYPE_PA:
8755                 /* ignore these for now */
8756                 break;
8757         default:
8758                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
8759                          element_type, seid);
8760                 break;
8761         }
8762 }
8763
8764 /**
8765  * i40e_fetch_switch_configuration - Get switch config from firmware
8766  * @pf: board private structure
8767  * @printconfig: should we print the contents
8768  *
8769  * Get the current switch configuration from the device and
8770  * extract a few useful SEID values.
8771  **/
8772 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
8773 {
8774         struct i40e_aqc_get_switch_config_resp *sw_config;
8775         u16 next_seid = 0;
8776         int ret = 0;
8777         u8 *aq_buf;
8778         int i;
8779
8780         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
8781         if (!aq_buf)
8782                 return -ENOMEM;
8783
8784         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
8785         do {
8786                 u16 num_reported, num_total;
8787
8788                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
8789                                                 I40E_AQ_LARGE_BUF,
8790                                                 &next_seid, NULL);
8791                 if (ret) {
8792                         dev_info(&pf->pdev->dev,
8793                                  "get switch config failed %d aq_err=%x\n",
8794                                  ret, pf->hw.aq.asq_last_status);
8795                         kfree(aq_buf);
8796                         return -ENOENT;
8797                 }
8798
8799                 num_reported = le16_to_cpu(sw_config->header.num_reported);
8800                 num_total = le16_to_cpu(sw_config->header.num_total);
8801
8802                 if (printconfig)
8803                         dev_info(&pf->pdev->dev,
8804                                  "header: %d reported %d total\n",
8805                                  num_reported, num_total);
8806
8807                 for (i = 0; i < num_reported; i++) {
8808                         struct i40e_aqc_switch_config_element_resp *ele =
8809                                 &sw_config->element[i];
8810
8811                         i40e_setup_pf_switch_element(pf, ele, num_reported,
8812                                                      printconfig);
8813                 }
8814         } while (next_seid != 0);
8815
8816         kfree(aq_buf);
8817         return ret;
8818 }
8819
8820 /**
8821  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
8822  * @pf: board private structure
8823  * @reinit: if the Main VSI needs to re-initialized.
8824  *
8825  * Returns 0 on success, negative value on failure
8826  **/
8827 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
8828 {
8829         int ret;
8830
8831         /* find out what's out there already */
8832         ret = i40e_fetch_switch_configuration(pf, false);
8833         if (ret) {
8834                 dev_info(&pf->pdev->dev,
8835                          "couldn't fetch switch config, err %d, aq_err %d\n",
8836                          ret, pf->hw.aq.asq_last_status);
8837                 return ret;
8838         }
8839         i40e_pf_reset_stats(pf);
8840
8841         /* first time setup */
8842         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
8843                 struct i40e_vsi *vsi = NULL;
8844                 u16 uplink_seid;
8845
8846                 /* Set up the PF VSI associated with the PF's main VSI
8847                  * that is already in the HW switch
8848                  */
8849                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
8850                         uplink_seid = pf->veb[pf->lan_veb]->seid;
8851                 else
8852                         uplink_seid = pf->mac_seid;
8853                 if (pf->lan_vsi == I40E_NO_VSI)
8854                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
8855                 else if (reinit)
8856                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
8857                 if (!vsi) {
8858                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
8859                         i40e_fdir_teardown(pf);
8860                         return -EAGAIN;
8861                 }
8862         } else {
8863                 /* force a reset of TC and queue layout configurations */
8864                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8865                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8866                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8867                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8868         }
8869         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
8870
8871         i40e_fdir_sb_setup(pf);
8872
8873         /* Setup static PF queue filter control settings */
8874         ret = i40e_setup_pf_filter_control(pf);
8875         if (ret) {
8876                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
8877                          ret);
8878                 /* Failure here should not stop continuing other steps */
8879         }
8880
8881         /* enable RSS in the HW, even for only one queue, as the stack can use
8882          * the hash
8883          */
8884         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
8885                 i40e_config_rss(pf);
8886
8887         /* fill in link information and enable LSE reporting */
8888         i40e_update_link_info(&pf->hw, true);
8889         i40e_link_event(pf);
8890
8891         /* Initialize user-specific link properties */
8892         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8893                                   I40E_AQ_AN_COMPLETED) ? true : false);
8894
8895         /* fill in link information and enable LSE reporting */
8896         i40e_update_link_info(&pf->hw, true);
8897         i40e_link_event(pf);
8898
8899         /* Initialize user-specific link properties */
8900         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8901                                   I40E_AQ_AN_COMPLETED) ? true : false);
8902
8903         i40e_ptp_init(pf);
8904
8905         return ret;
8906 }
8907
8908 /**
8909  * i40e_determine_queue_usage - Work out queue distribution
8910  * @pf: board private structure
8911  **/
8912 static void i40e_determine_queue_usage(struct i40e_pf *pf)
8913 {
8914         int queues_left;
8915
8916         pf->num_lan_qps = 0;
8917 #ifdef I40E_FCOE
8918         pf->num_fcoe_qps = 0;
8919 #endif
8920
8921         /* Find the max queues to be put into basic use.  We'll always be
8922          * using TC0, whether or not DCB is running, and TC0 will get the
8923          * big RSS set.
8924          */
8925         queues_left = pf->hw.func_caps.num_tx_qp;
8926
8927         if ((queues_left == 1) ||
8928             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
8929                 /* one qp for PF, no queues for anything else */
8930                 queues_left = 0;
8931                 pf->rss_size = pf->num_lan_qps = 1;
8932
8933                 /* make sure all the fancies are disabled */
8934                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8935 #ifdef I40E_FCOE
8936                                I40E_FLAG_FCOE_ENABLED   |
8937 #endif
8938                                I40E_FLAG_FD_SB_ENABLED  |
8939                                I40E_FLAG_FD_ATR_ENABLED |
8940                                I40E_FLAG_DCB_CAPABLE    |
8941                                I40E_FLAG_SRIOV_ENABLED  |
8942                                I40E_FLAG_VMDQ_ENABLED);
8943         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
8944                                   I40E_FLAG_FD_SB_ENABLED |
8945                                   I40E_FLAG_FD_ATR_ENABLED |
8946                                   I40E_FLAG_DCB_CAPABLE))) {
8947                 /* one qp for PF */
8948                 pf->rss_size = pf->num_lan_qps = 1;
8949                 queues_left -= pf->num_lan_qps;
8950
8951                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8952 #ifdef I40E_FCOE
8953                                I40E_FLAG_FCOE_ENABLED   |
8954 #endif
8955                                I40E_FLAG_FD_SB_ENABLED  |
8956                                I40E_FLAG_FD_ATR_ENABLED |
8957                                I40E_FLAG_DCB_ENABLED    |
8958                                I40E_FLAG_VMDQ_ENABLED);
8959         } else {
8960                 /* Not enough queues for all TCs */
8961                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
8962                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
8963                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
8964                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
8965                 }
8966                 pf->num_lan_qps = pf->rss_size_max;
8967                 queues_left -= pf->num_lan_qps;
8968         }
8969
8970 #ifdef I40E_FCOE
8971         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
8972                 if (I40E_DEFAULT_FCOE <= queues_left) {
8973                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
8974                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
8975                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
8976                 } else {
8977                         pf->num_fcoe_qps = 0;
8978                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
8979                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
8980                 }
8981
8982                 queues_left -= pf->num_fcoe_qps;
8983         }
8984
8985 #endif
8986         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8987                 if (queues_left > 1) {
8988                         queues_left -= 1; /* save 1 queue for FD */
8989                 } else {
8990                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8991                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
8992                 }
8993         }
8994
8995         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8996             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
8997                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
8998                                         (queues_left / pf->num_vf_qps));
8999                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9000         }
9001
9002         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9003             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9004                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9005                                           (queues_left / pf->num_vmdq_qps));
9006                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9007         }
9008
9009         pf->queues_left = queues_left;
9010 #ifdef I40E_FCOE
9011         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9012 #endif
9013 }
9014
9015 /**
9016  * i40e_setup_pf_filter_control - Setup PF static filter control
9017  * @pf: PF to be setup
9018  *
9019  * i40e_setup_pf_filter_control sets up a pf's initial filter control
9020  * settings. If PE/FCoE are enabled then it will also set the per PF
9021  * based filter sizes required for them. It also enables Flow director,
9022  * ethertype and macvlan type filter settings for the pf.
9023  *
9024  * Returns 0 on success, negative on failure
9025  **/
9026 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9027 {
9028         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9029
9030         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9031
9032         /* Flow Director is enabled */
9033         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9034                 settings->enable_fdir = true;
9035
9036         /* Ethtype and MACVLAN filters enabled for PF */
9037         settings->enable_ethtype = true;
9038         settings->enable_macvlan = true;
9039
9040         if (i40e_set_filter_control(&pf->hw, settings))
9041                 return -ENOENT;
9042
9043         return 0;
9044 }
9045
9046 #define INFO_STRING_LEN 255
9047 static void i40e_print_features(struct i40e_pf *pf)
9048 {
9049         struct i40e_hw *hw = &pf->hw;
9050         char *buf, *string;
9051
9052         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9053         if (!string) {
9054                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9055                 return;
9056         }
9057
9058         buf = string;
9059
9060         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9061 #ifdef CONFIG_PCI_IOV
9062         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9063 #endif
9064         buf += sprintf(buf, "VSIs: %d QP: %d ", pf->hw.func_caps.num_vsis,
9065                        pf->vsi[pf->lan_vsi]->num_queue_pairs);
9066
9067         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9068                 buf += sprintf(buf, "RSS ");
9069         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9070                 buf += sprintf(buf, "FD_ATR ");
9071         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9072                 buf += sprintf(buf, "FD_SB ");
9073                 buf += sprintf(buf, "NTUPLE ");
9074         }
9075         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9076                 buf += sprintf(buf, "DCB ");
9077         if (pf->flags & I40E_FLAG_PTP)
9078                 buf += sprintf(buf, "PTP ");
9079 #ifdef I40E_FCOE
9080         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9081                 buf += sprintf(buf, "FCOE ");
9082 #endif
9083
9084         BUG_ON(buf > (string + INFO_STRING_LEN));
9085         dev_info(&pf->pdev->dev, "%s\n", string);
9086         kfree(string);
9087 }
9088
9089 /**
9090  * i40e_probe - Device initialization routine
9091  * @pdev: PCI device information struct
9092  * @ent: entry in i40e_pci_tbl
9093  *
9094  * i40e_probe initializes a pf identified by a pci_dev structure.
9095  * The OS initialization, configuring of the pf private structure,
9096  * and a hardware reset occur.
9097  *
9098  * Returns 0 on success, negative on failure
9099  **/
9100 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9101 {
9102         struct i40e_pf *pf;
9103         struct i40e_hw *hw;
9104         static u16 pfs_found;
9105         u16 link_status;
9106         int err = 0;
9107         u32 len;
9108         u32 i;
9109
9110         err = pci_enable_device_mem(pdev);
9111         if (err)
9112                 return err;
9113
9114         /* set up for high or low dma */
9115         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9116         if (err) {
9117                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9118                 if (err) {
9119                         dev_err(&pdev->dev,
9120                                 "DMA configuration failed: 0x%x\n", err);
9121                         goto err_dma;
9122                 }
9123         }
9124
9125         /* set up pci connections */
9126         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9127                                            IORESOURCE_MEM), i40e_driver_name);
9128         if (err) {
9129                 dev_info(&pdev->dev,
9130                          "pci_request_selected_regions failed %d\n", err);
9131                 goto err_pci_reg;
9132         }
9133
9134         pci_enable_pcie_error_reporting(pdev);
9135         pci_set_master(pdev);
9136
9137         /* Now that we have a PCI connection, we need to do the
9138          * low level device setup.  This is primarily setting up
9139          * the Admin Queue structures and then querying for the
9140          * device's current profile information.
9141          */
9142         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9143         if (!pf) {
9144                 err = -ENOMEM;
9145                 goto err_pf_alloc;
9146         }
9147         pf->next_vsi = 0;
9148         pf->pdev = pdev;
9149         set_bit(__I40E_DOWN, &pf->state);
9150
9151         hw = &pf->hw;
9152         hw->back = pf;
9153         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
9154                               pci_resource_len(pdev, 0));
9155         if (!hw->hw_addr) {
9156                 err = -EIO;
9157                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9158                          (unsigned int)pci_resource_start(pdev, 0),
9159                          (unsigned int)pci_resource_len(pdev, 0), err);
9160                 goto err_ioremap;
9161         }
9162         hw->vendor_id = pdev->vendor;
9163         hw->device_id = pdev->device;
9164         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
9165         hw->subsystem_vendor_id = pdev->subsystem_vendor;
9166         hw->subsystem_device_id = pdev->subsystem_device;
9167         hw->bus.device = PCI_SLOT(pdev->devfn);
9168         hw->bus.func = PCI_FUNC(pdev->devfn);
9169         pf->instance = pfs_found;
9170
9171         if (debug != -1) {
9172                 pf->msg_enable = pf->hw.debug_mask;
9173                 pf->msg_enable = debug;
9174         }
9175
9176         /* do a special CORER for clearing PXE mode once at init */
9177         if (hw->revision_id == 0 &&
9178             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
9179                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
9180                 i40e_flush(hw);
9181                 msleep(200);
9182                 pf->corer_count++;
9183
9184                 i40e_clear_pxe_mode(hw);
9185         }
9186
9187         /* Reset here to make sure all is clean and to define PF 'n' */
9188         i40e_clear_hw(hw);
9189         err = i40e_pf_reset(hw);
9190         if (err) {
9191                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
9192                 goto err_pf_reset;
9193         }
9194         pf->pfr_count++;
9195
9196         hw->aq.num_arq_entries = I40E_AQ_LEN;
9197         hw->aq.num_asq_entries = I40E_AQ_LEN;
9198         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9199         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9200         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
9201
9202         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
9203                  "%s-%s:misc",
9204                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
9205
9206         err = i40e_init_shared_code(hw);
9207         if (err) {
9208                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
9209                 goto err_pf_reset;
9210         }
9211
9212         /* set up a default setting for link flow control */
9213         pf->hw.fc.requested_mode = I40E_FC_NONE;
9214
9215         err = i40e_init_adminq(hw);
9216         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
9217         if (err) {
9218                 dev_info(&pdev->dev,
9219                          "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");
9220                 goto err_pf_reset;
9221         }
9222
9223         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
9224             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
9225                 dev_info(&pdev->dev,
9226                          "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");
9227         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
9228                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
9229                 dev_info(&pdev->dev,
9230                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
9231
9232
9233         i40e_verify_eeprom(pf);
9234
9235         /* Rev 0 hardware was never productized */
9236         if (hw->revision_id < 1)
9237                 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");
9238
9239         i40e_clear_pxe_mode(hw);
9240         err = i40e_get_capabilities(pf);
9241         if (err)
9242                 goto err_adminq_setup;
9243
9244         err = i40e_sw_init(pf);
9245         if (err) {
9246                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
9247                 goto err_sw_init;
9248         }
9249
9250         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
9251                                 hw->func_caps.num_rx_qp,
9252                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
9253         if (err) {
9254                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
9255                 goto err_init_lan_hmc;
9256         }
9257
9258         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
9259         if (err) {
9260                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
9261                 err = -ENOENT;
9262                 goto err_configure_lan_hmc;
9263         }
9264
9265         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
9266          * Ignore error return codes because if it was already disabled via
9267          * hardware settings this will fail
9268          */
9269         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
9270             (pf->hw.aq.fw_maj_ver < 4)) {
9271                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
9272                 i40e_aq_stop_lldp(hw, true, NULL);
9273         }
9274
9275         i40e_get_mac_addr(hw, hw->mac.addr);
9276         if (!is_valid_ether_addr(hw->mac.addr)) {
9277                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
9278                 err = -EIO;
9279                 goto err_mac_addr;
9280         }
9281         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
9282         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
9283         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
9284         if (is_valid_ether_addr(hw->mac.port_addr))
9285                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
9286 #ifdef I40E_FCOE
9287         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
9288         if (err)
9289                 dev_info(&pdev->dev,
9290                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
9291         if (!is_valid_ether_addr(hw->mac.san_addr)) {
9292                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
9293                          hw->mac.san_addr);
9294                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
9295         }
9296         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
9297 #endif /* I40E_FCOE */
9298
9299         pci_set_drvdata(pdev, pf);
9300         pci_save_state(pdev);
9301 #ifdef CONFIG_I40E_DCB
9302         err = i40e_init_pf_dcb(pf);
9303         if (err) {
9304                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
9305                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9306                 /* Continue without DCB enabled */
9307         }
9308 #endif /* CONFIG_I40E_DCB */
9309
9310         /* set up periodic task facility */
9311         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
9312         pf->service_timer_period = HZ;
9313
9314         INIT_WORK(&pf->service_task, i40e_service_task);
9315         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
9316         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
9317         pf->link_check_timeout = jiffies;
9318
9319         /* WoL defaults to disabled */
9320         pf->wol_en = false;
9321         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
9322
9323         /* set up the main switch operations */
9324         i40e_determine_queue_usage(pf);
9325         i40e_init_interrupt_scheme(pf);
9326
9327         /* The number of VSIs reported by the FW is the minimum guaranteed
9328          * to us; HW supports far more and we share the remaining pool with
9329          * the other PFs. We allocate space for more than the guarantee with
9330          * the understanding that we might not get them all later.
9331          */
9332         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
9333                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
9334         else
9335                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
9336
9337         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
9338         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
9339         pf->vsi = kzalloc(len, GFP_KERNEL);
9340         if (!pf->vsi) {
9341                 err = -ENOMEM;
9342                 goto err_switch_setup;
9343         }
9344
9345         err = i40e_setup_pf_switch(pf, false);
9346         if (err) {
9347                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
9348                 goto err_vsis;
9349         }
9350         /* if FDIR VSI was set up, start it now */
9351         for (i = 0; i < pf->num_alloc_vsi; i++) {
9352                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
9353                         i40e_vsi_open(pf->vsi[i]);
9354                         break;
9355                 }
9356         }
9357
9358         /* driver is only interested in link up/down and module qualification
9359          * reports from firmware
9360          */
9361         err = i40e_aq_set_phy_int_mask(&pf->hw,
9362                                        I40E_AQ_EVENT_LINK_UPDOWN |
9363                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
9364         if (err)
9365                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", err);
9366
9367         msleep(75);
9368         err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
9369         if (err) {
9370                 dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
9371                          pf->hw.aq.asq_last_status);
9372         }
9373
9374         /* The main driver is (mostly) up and happy. We need to set this state
9375          * before setting up the misc vector or we get a race and the vector
9376          * ends up disabled forever.
9377          */
9378         clear_bit(__I40E_DOWN, &pf->state);
9379
9380         /* In case of MSIX we are going to setup the misc vector right here
9381          * to handle admin queue events etc. In case of legacy and MSI
9382          * the misc functionality and queue processing is combined in
9383          * the same vector and that gets setup at open.
9384          */
9385         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9386                 err = i40e_setup_misc_vector(pf);
9387                 if (err) {
9388                         dev_info(&pdev->dev,
9389                                  "setup of misc vector failed: %d\n", err);
9390                         goto err_vsis;
9391                 }
9392         }
9393
9394 #ifdef CONFIG_PCI_IOV
9395         /* prep for VF support */
9396         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9397             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
9398             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
9399                 u32 val;
9400
9401                 /* disable link interrupts for VFs */
9402                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
9403                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
9404                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
9405                 i40e_flush(hw);
9406
9407                 if (pci_num_vf(pdev)) {
9408                         dev_info(&pdev->dev,
9409                                  "Active VFs found, allocating resources.\n");
9410                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
9411                         if (err)
9412                                 dev_info(&pdev->dev,
9413                                          "Error %d allocating resources for existing VFs\n",
9414                                          err);
9415                 }
9416         }
9417 #endif /* CONFIG_PCI_IOV */
9418
9419         pfs_found++;
9420
9421         i40e_dbg_pf_init(pf);
9422
9423         /* tell the firmware that we're starting */
9424         i40e_send_version(pf);
9425
9426         /* since everything's happy, start the service_task timer */
9427         mod_timer(&pf->service_timer,
9428                   round_jiffies(jiffies + pf->service_timer_period));
9429
9430 #ifdef I40E_FCOE
9431         /* create FCoE interface */
9432         i40e_fcoe_vsi_setup(pf);
9433
9434 #endif
9435         /* Get the negotiated link width and speed from PCI config space */
9436         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
9437
9438         i40e_set_pci_config_data(hw, link_status);
9439
9440         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
9441                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
9442                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
9443                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
9444                  "Unknown"),
9445                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
9446                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
9447                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
9448                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
9449                  "Unknown"));
9450
9451         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
9452             hw->bus.speed < i40e_bus_speed_8000) {
9453                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
9454                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
9455         }
9456
9457         /* print a string summarizing features */
9458         i40e_print_features(pf);
9459
9460         return 0;
9461
9462         /* Unwind what we've done if something failed in the setup */
9463 err_vsis:
9464         set_bit(__I40E_DOWN, &pf->state);
9465         i40e_clear_interrupt_scheme(pf);
9466         kfree(pf->vsi);
9467 err_switch_setup:
9468         i40e_reset_interrupt_capability(pf);
9469         del_timer_sync(&pf->service_timer);
9470 err_mac_addr:
9471 err_configure_lan_hmc:
9472         (void)i40e_shutdown_lan_hmc(hw);
9473 err_init_lan_hmc:
9474         kfree(pf->qp_pile);
9475         kfree(pf->irq_pile);
9476 err_sw_init:
9477 err_adminq_setup:
9478         (void)i40e_shutdown_adminq(hw);
9479 err_pf_reset:
9480         iounmap(hw->hw_addr);
9481 err_ioremap:
9482         kfree(pf);
9483 err_pf_alloc:
9484         pci_disable_pcie_error_reporting(pdev);
9485         pci_release_selected_regions(pdev,
9486                                      pci_select_bars(pdev, IORESOURCE_MEM));
9487 err_pci_reg:
9488 err_dma:
9489         pci_disable_device(pdev);
9490         return err;
9491 }
9492
9493 /**
9494  * i40e_remove - Device removal routine
9495  * @pdev: PCI device information struct
9496  *
9497  * i40e_remove is called by the PCI subsystem to alert the driver
9498  * that is should release a PCI device.  This could be caused by a
9499  * Hot-Plug event, or because the driver is going to be removed from
9500  * memory.
9501  **/
9502 static void i40e_remove(struct pci_dev *pdev)
9503 {
9504         struct i40e_pf *pf = pci_get_drvdata(pdev);
9505         i40e_status ret_code;
9506         int i;
9507
9508         i40e_dbg_pf_exit(pf);
9509
9510         i40e_ptp_stop(pf);
9511
9512         /* no more scheduling of any task */
9513         set_bit(__I40E_DOWN, &pf->state);
9514         del_timer_sync(&pf->service_timer);
9515         cancel_work_sync(&pf->service_task);
9516
9517         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
9518                 i40e_free_vfs(pf);
9519                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
9520         }
9521
9522         i40e_fdir_teardown(pf);
9523
9524         /* If there is a switch structure or any orphans, remove them.
9525          * This will leave only the PF's VSI remaining.
9526          */
9527         for (i = 0; i < I40E_MAX_VEB; i++) {
9528                 if (!pf->veb[i])
9529                         continue;
9530
9531                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
9532                     pf->veb[i]->uplink_seid == 0)
9533                         i40e_switch_branch_release(pf->veb[i]);
9534         }
9535
9536         /* Now we can shutdown the PF's VSI, just before we kill
9537          * adminq and hmc.
9538          */
9539         if (pf->vsi[pf->lan_vsi])
9540                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
9541
9542         i40e_stop_misc_vector(pf);
9543         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9544                 synchronize_irq(pf->msix_entries[0].vector);
9545                 free_irq(pf->msix_entries[0].vector, pf);
9546         }
9547
9548         /* shutdown and destroy the HMC */
9549         if (pf->hw.hmc.hmc_obj) {
9550                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
9551                 if (ret_code)
9552                         dev_warn(&pdev->dev,
9553                                  "Failed to destroy the HMC resources: %d\n",
9554                                  ret_code);
9555         }
9556
9557         /* shutdown the adminq */
9558         ret_code = i40e_shutdown_adminq(&pf->hw);
9559         if (ret_code)
9560                 dev_warn(&pdev->dev,
9561                          "Failed to destroy the Admin Queue resources: %d\n",
9562                          ret_code);
9563
9564         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
9565         i40e_clear_interrupt_scheme(pf);
9566         for (i = 0; i < pf->num_alloc_vsi; i++) {
9567                 if (pf->vsi[i]) {
9568                         i40e_vsi_clear_rings(pf->vsi[i]);
9569                         i40e_vsi_clear(pf->vsi[i]);
9570                         pf->vsi[i] = NULL;
9571                 }
9572         }
9573
9574         for (i = 0; i < I40E_MAX_VEB; i++) {
9575                 kfree(pf->veb[i]);
9576                 pf->veb[i] = NULL;
9577         }
9578
9579         kfree(pf->qp_pile);
9580         kfree(pf->irq_pile);
9581         kfree(pf->vsi);
9582
9583         iounmap(pf->hw.hw_addr);
9584         kfree(pf);
9585         pci_release_selected_regions(pdev,
9586                                      pci_select_bars(pdev, IORESOURCE_MEM));
9587
9588         pci_disable_pcie_error_reporting(pdev);
9589         pci_disable_device(pdev);
9590 }
9591
9592 /**
9593  * i40e_pci_error_detected - warning that something funky happened in PCI land
9594  * @pdev: PCI device information struct
9595  *
9596  * Called to warn that something happened and the error handling steps
9597  * are in progress.  Allows the driver to quiesce things, be ready for
9598  * remediation.
9599  **/
9600 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
9601                                                 enum pci_channel_state error)
9602 {
9603         struct i40e_pf *pf = pci_get_drvdata(pdev);
9604
9605         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
9606
9607         /* shutdown all operations */
9608         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
9609                 rtnl_lock();
9610                 i40e_prep_for_reset(pf);
9611                 rtnl_unlock();
9612         }
9613
9614         /* Request a slot reset */
9615         return PCI_ERS_RESULT_NEED_RESET;
9616 }
9617
9618 /**
9619  * i40e_pci_error_slot_reset - a PCI slot reset just happened
9620  * @pdev: PCI device information struct
9621  *
9622  * Called to find if the driver can work with the device now that
9623  * the pci slot has been reset.  If a basic connection seems good
9624  * (registers are readable and have sane content) then return a
9625  * happy little PCI_ERS_RESULT_xxx.
9626  **/
9627 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
9628 {
9629         struct i40e_pf *pf = pci_get_drvdata(pdev);
9630         pci_ers_result_t result;
9631         int err;
9632         u32 reg;
9633
9634         dev_info(&pdev->dev, "%s\n", __func__);
9635         if (pci_enable_device_mem(pdev)) {
9636                 dev_info(&pdev->dev,
9637                          "Cannot re-enable PCI device after reset.\n");
9638                 result = PCI_ERS_RESULT_DISCONNECT;
9639         } else {
9640                 pci_set_master(pdev);
9641                 pci_restore_state(pdev);
9642                 pci_save_state(pdev);
9643                 pci_wake_from_d3(pdev, false);
9644
9645                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
9646                 if (reg == 0)
9647                         result = PCI_ERS_RESULT_RECOVERED;
9648                 else
9649                         result = PCI_ERS_RESULT_DISCONNECT;
9650         }
9651
9652         err = pci_cleanup_aer_uncorrect_error_status(pdev);
9653         if (err) {
9654                 dev_info(&pdev->dev,
9655                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
9656                          err);
9657                 /* non-fatal, continue */
9658         }
9659
9660         return result;
9661 }
9662
9663 /**
9664  * i40e_pci_error_resume - restart operations after PCI error recovery
9665  * @pdev: PCI device information struct
9666  *
9667  * Called to allow the driver to bring things back up after PCI error
9668  * and/or reset recovery has finished.
9669  **/
9670 static void i40e_pci_error_resume(struct pci_dev *pdev)
9671 {
9672         struct i40e_pf *pf = pci_get_drvdata(pdev);
9673
9674         dev_info(&pdev->dev, "%s\n", __func__);
9675         if (test_bit(__I40E_SUSPENDED, &pf->state))
9676                 return;
9677
9678         rtnl_lock();
9679         i40e_handle_reset_warning(pf);
9680         rtnl_lock();
9681 }
9682
9683 /**
9684  * i40e_shutdown - PCI callback for shutting down
9685  * @pdev: PCI device information struct
9686  **/
9687 static void i40e_shutdown(struct pci_dev *pdev)
9688 {
9689         struct i40e_pf *pf = pci_get_drvdata(pdev);
9690         struct i40e_hw *hw = &pf->hw;
9691
9692         set_bit(__I40E_SUSPENDED, &pf->state);
9693         set_bit(__I40E_DOWN, &pf->state);
9694         rtnl_lock();
9695         i40e_prep_for_reset(pf);
9696         rtnl_unlock();
9697
9698         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9699         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9700
9701         if (system_state == SYSTEM_POWER_OFF) {
9702                 pci_wake_from_d3(pdev, pf->wol_en);
9703                 pci_set_power_state(pdev, PCI_D3hot);
9704         }
9705 }
9706
9707 #ifdef CONFIG_PM
9708 /**
9709  * i40e_suspend - PCI callback for moving to D3
9710  * @pdev: PCI device information struct
9711  **/
9712 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
9713 {
9714         struct i40e_pf *pf = pci_get_drvdata(pdev);
9715         struct i40e_hw *hw = &pf->hw;
9716
9717         set_bit(__I40E_SUSPENDED, &pf->state);
9718         set_bit(__I40E_DOWN, &pf->state);
9719         del_timer_sync(&pf->service_timer);
9720         cancel_work_sync(&pf->service_task);
9721         rtnl_lock();
9722         i40e_prep_for_reset(pf);
9723         rtnl_unlock();
9724
9725         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9726         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9727
9728         pci_wake_from_d3(pdev, pf->wol_en);
9729         pci_set_power_state(pdev, PCI_D3hot);
9730
9731         return 0;
9732 }
9733
9734 /**
9735  * i40e_resume - PCI callback for waking up from D3
9736  * @pdev: PCI device information struct
9737  **/
9738 static int i40e_resume(struct pci_dev *pdev)
9739 {
9740         struct i40e_pf *pf = pci_get_drvdata(pdev);
9741         u32 err;
9742
9743         pci_set_power_state(pdev, PCI_D0);
9744         pci_restore_state(pdev);
9745         /* pci_restore_state() clears dev->state_saves, so
9746          * call pci_save_state() again to restore it.
9747          */
9748         pci_save_state(pdev);
9749
9750         err = pci_enable_device_mem(pdev);
9751         if (err) {
9752                 dev_err(&pdev->dev,
9753                         "%s: Cannot enable PCI device from suspend\n",
9754                         __func__);
9755                 return err;
9756         }
9757         pci_set_master(pdev);
9758
9759         /* no wakeup events while running */
9760         pci_wake_from_d3(pdev, false);
9761
9762         /* handling the reset will rebuild the device state */
9763         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
9764                 clear_bit(__I40E_DOWN, &pf->state);
9765                 rtnl_lock();
9766                 i40e_reset_and_rebuild(pf, false);
9767                 rtnl_unlock();
9768         }
9769
9770         return 0;
9771 }
9772
9773 #endif
9774 static const struct pci_error_handlers i40e_err_handler = {
9775         .error_detected = i40e_pci_error_detected,
9776         .slot_reset = i40e_pci_error_slot_reset,
9777         .resume = i40e_pci_error_resume,
9778 };
9779
9780 static struct pci_driver i40e_driver = {
9781         .name     = i40e_driver_name,
9782         .id_table = i40e_pci_tbl,
9783         .probe    = i40e_probe,
9784         .remove   = i40e_remove,
9785 #ifdef CONFIG_PM
9786         .suspend  = i40e_suspend,
9787         .resume   = i40e_resume,
9788 #endif
9789         .shutdown = i40e_shutdown,
9790         .err_handler = &i40e_err_handler,
9791         .sriov_configure = i40e_pci_sriov_configure,
9792 };
9793
9794 /**
9795  * i40e_init_module - Driver registration routine
9796  *
9797  * i40e_init_module is the first routine called when the driver is
9798  * loaded. All it does is register with the PCI subsystem.
9799  **/
9800 static int __init i40e_init_module(void)
9801 {
9802         pr_info("%s: %s - version %s\n", i40e_driver_name,
9803                 i40e_driver_string, i40e_driver_version_str);
9804         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
9805         i40e_dbg_init();
9806         return pci_register_driver(&i40e_driver);
9807 }
9808 module_init(i40e_init_module);
9809
9810 /**
9811  * i40e_exit_module - Driver exit cleanup routine
9812  *
9813  * i40e_exit_module is called just before the driver is removed
9814  * from memory.
9815  **/
9816 static void __exit i40e_exit_module(void)
9817 {
9818         pci_unregister_driver(&i40e_driver);
9819         i40e_dbg_exit();
9820 }
9821 module_exit(i40e_exit_module);