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 #ifdef CONFIG_I40E_VXLAN
  30 #include <net/vxlan.h>
  31 #endif
  32
  33 const char i40e_driver_name[] = "i40e";
  34 static const char i40e_driver_string[] =
  35                         "Intel(R) Ethernet Connection XL710 Network Driver";
  36
  37 #define DRV_KERN "-k"
  38
  39 #define DRV_VERSION_MAJOR 0
  40 #define DRV_VERSION_MINOR 3
  41 #define DRV_VERSION_BUILD 31
  42 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  43              __stringify(DRV_VERSION_MINOR) "." \
  44              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  45 const char i40e_driver_version_str[] = DRV_VERSION;
  46 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  47
  48 /* a bit of forward declarations */
  49 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  50 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  51 static int i40e_add_vsi(struct i40e_vsi *vsi);
  52 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  53 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  54 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  55 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  56 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  57 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  58 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  59
  60 /* i40e_pci_tbl - PCI Device ID Table
  61  *
  62  * Last entry must be all 0s
  63  *
  64  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  65  *   Class, Class Mask, private data (not used) }
  66  */
  67 static DEFINE_PCI_DEVICE_TABLE(i40e_pci_tbl) = {
  68         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X710), 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_KX_D), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 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 static void i40e_tx_timeout(struct net_device *netdev)
 274 {
 275         struct i40e_netdev_priv *np = netdev_priv(netdev);
 276         struct i40e_vsi *vsi = np->vsi;
 277         struct i40e_pf *pf = vsi->back;
 278
 279         pf->tx_timeout_count++;
 280
 281         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 282                 pf->tx_timeout_recovery_level = 0;
 283         pf->tx_timeout_last_recovery = jiffies;
 284         netdev_info(netdev, "tx_timeout recovery level %d\n",
 285                     pf->tx_timeout_recovery_level);
 286
 287         switch (pf->tx_timeout_recovery_level) {
 288         case 0:
 289                 /* disable and re-enable queues for the VSI */
 290                 if (in_interrupt()) {
 291                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 292                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 293                 } else {
 294                         i40e_vsi_reinit_locked(vsi);
 295                 }
 296                 break;
 297         case 1:
 298                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 299                 break;
 300         case 2:
 301                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 302                 break;
 303         case 3:
 304                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 305                 break;
 306         default:
 307                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 308                 set_bit(__I40E_DOWN, &vsi->state);
 309                 i40e_down(vsi);
 310                 break;
 311         }
 312         i40e_service_event_schedule(pf);
 313         pf->tx_timeout_recovery_level++;
 314 }
 315
 316 /**
 317  * i40e_release_rx_desc - Store the new tail and head values
 318  * @rx_ring: ring to bump
 319  * @val: new head index
 320  **/
 321 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 322 {
 323         rx_ring->next_to_use = val;
 324
 325         /* Force memory writes to complete before letting h/w
 326          * know there are new descriptors to fetch.  (Only
 327          * applicable for weak-ordered memory model archs,
 328          * such as IA-64).
 329          */
 330         wmb();
 331         writel(val, rx_ring->tail);
 332 }
 333
 334 /**
 335  * i40e_get_vsi_stats_struct - Get System Network Statistics
 336  * @vsi: the VSI we care about
 337  *
 338  * Returns the address of the device statistics structure.
 339  * The statistics are actually updated from the service task.
 340  **/
 341 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 342 {
 343         return &vsi->net_stats;
 344 }
 345
 346 /**
 347  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 348  * @netdev: network interface device structure
 349  *
 350  * Returns the address of the device statistics structure.
 351  * The statistics are actually updated from the service task.
 352  **/
 353 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 354                                              struct net_device *netdev,
 355                                              struct rtnl_link_stats64 *stats)
 356 {
 357         struct i40e_netdev_priv *np = netdev_priv(netdev);
 358         struct i40e_vsi *vsi = np->vsi;
 359         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 360         int i;
 361
 362         if (test_bit(__I40E_DOWN, &vsi->state))
 363                 return stats;
 364
 365         if (!vsi->tx_rings)
 366                 return stats;
 367
 368         rcu_read_lock();
 369         for (i = 0; i < vsi->num_queue_pairs; i++) {
 370                 struct i40e_ring *tx_ring, *rx_ring;
 371                 u64 bytes, packets;
 372                 unsigned int start;
 373
 374                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 375                 if (!tx_ring)
 376                         continue;
 377
 378                 do {
 379                         start = u64_stats_fetch_begin_bh(&tx_ring->syncp);
 380                         packets = tx_ring->stats.packets;
 381                         bytes   = tx_ring->stats.bytes;
 382                 } while (u64_stats_fetch_retry_bh(&tx_ring->syncp, start));
 383
 384                 stats->tx_packets += packets;
 385                 stats->tx_bytes   += bytes;
 386                 rx_ring = &tx_ring[1];
 387
 388                 do {
 389                         start = u64_stats_fetch_begin_bh(&rx_ring->syncp);
 390                         packets = rx_ring->stats.packets;
 391                         bytes   = rx_ring->stats.bytes;
 392                 } while (u64_stats_fetch_retry_bh(&rx_ring->syncp, start));
 393
 394                 stats->rx_packets += packets;
 395                 stats->rx_bytes   += bytes;
 396         }
 397         rcu_read_unlock();
 398
 399         /* following stats updated by ixgbe_watchdog_task() */
 400         stats->multicast        = vsi_stats->multicast;
 401         stats->tx_errors        = vsi_stats->tx_errors;
 402         stats->tx_dropped       = vsi_stats->tx_dropped;
 403         stats->rx_errors        = vsi_stats->rx_errors;
 404         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 405         stats->rx_length_errors = vsi_stats->rx_length_errors;
 406
 407         return stats;
 408 }
 409
 410 /**
 411  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 412  * @vsi: the VSI to have its stats reset
 413  **/
 414 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 415 {
 416         struct rtnl_link_stats64 *ns;
 417         int i;
 418
 419         if (!vsi)
 420                 return;
 421
 422         ns = i40e_get_vsi_stats_struct(vsi);
 423         memset(ns, 0, sizeof(*ns));
 424         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 425         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 426         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 427         if (vsi->rx_rings && vsi->rx_rings[0]) {
 428                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 429                         memset(&vsi->rx_rings[i]->stats, 0 ,
 430                                sizeof(vsi->rx_rings[i]->stats));
 431                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 432                                sizeof(vsi->rx_rings[i]->rx_stats));
 433                         memset(&vsi->tx_rings[i]->stats, 0 ,
 434                                sizeof(vsi->tx_rings[i]->stats));
 435                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 436                                sizeof(vsi->tx_rings[i]->tx_stats));
 437                 }
 438         }
 439         vsi->stat_offsets_loaded = false;
 440 }
 441
 442 /**
 443  * i40e_pf_reset_stats - Reset all of the stats for the given pf
 444  * @pf: the PF to be reset
 445  **/
 446 void i40e_pf_reset_stats(struct i40e_pf *pf)
 447 {
 448         memset(&pf->stats, 0, sizeof(pf->stats));
 449         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 450         pf->stat_offsets_loaded = false;
 451 }
 452
 453 /**
 454  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 455  * @hw: ptr to the hardware info
 456  * @hireg: the high 32 bit reg to read
 457  * @loreg: the low 32 bit reg to read
 458  * @offset_loaded: has the initial offset been loaded yet
 459  * @offset: ptr to current offset value
 460  * @stat: ptr to the stat
 461  *
 462  * Since the device stats are not reset at PFReset, they likely will not
 463  * be zeroed when the driver starts.  We'll save the first values read
 464  * and use them as offsets to be subtracted from the raw values in order
 465  * to report stats that count from zero.  In the process, we also manage
 466  * the potential roll-over.
 467  **/
 468 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 469                                bool offset_loaded, u64 *offset, u64 *stat)
 470 {
 471         u64 new_data;
 472
 473         if (hw->device_id == I40E_DEV_ID_QEMU) {
 474                 new_data = rd32(hw, loreg);
 475                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 476         } else {
 477                 new_data = rd64(hw, loreg);
 478         }
 479         if (!offset_loaded)
 480                 *offset = new_data;
 481         if (likely(new_data >= *offset))
 482                 *stat = new_data - *offset;
 483         else
 484                 *stat = (new_data + ((u64)1 << 48)) - *offset;
 485         *stat &= 0xFFFFFFFFFFFFULL;
 486 }
 487
 488 /**
 489  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 490  * @hw: ptr to the hardware info
 491  * @reg: the hw reg to read
 492  * @offset_loaded: has the initial offset been loaded yet
 493  * @offset: ptr to current offset value
 494  * @stat: ptr to the stat
 495  **/
 496 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 497                                bool offset_loaded, u64 *offset, u64 *stat)
 498 {
 499         u32 new_data;
 500
 501         new_data = rd32(hw, reg);
 502         if (!offset_loaded)
 503                 *offset = new_data;
 504         if (likely(new_data >= *offset))
 505                 *stat = (u32)(new_data - *offset);
 506         else
 507                 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
 508 }
 509
 510 /**
 511  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 512  * @vsi: the VSI to be updated
 513  **/
 514 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 515 {
 516         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 517         struct i40e_pf *pf = vsi->back;
 518         struct i40e_hw *hw = &pf->hw;
 519         struct i40e_eth_stats *oes;
 520         struct i40e_eth_stats *es;     /* device's eth stats */
 521
 522         es = &vsi->eth_stats;
 523         oes = &vsi->eth_stats_offsets;
 524
 525         /* Gather up the stats that the hw collects */
 526         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 527                            vsi->stat_offsets_loaded,
 528                            &oes->tx_errors, &es->tx_errors);
 529         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 530                            vsi->stat_offsets_loaded,
 531                            &oes->rx_discards, &es->rx_discards);
 532
 533         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 534                            I40E_GLV_GORCL(stat_idx),
 535                            vsi->stat_offsets_loaded,
 536                            &oes->rx_bytes, &es->rx_bytes);
 537         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 538                            I40E_GLV_UPRCL(stat_idx),
 539                            vsi->stat_offsets_loaded,
 540                            &oes->rx_unicast, &es->rx_unicast);
 541         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 542                            I40E_GLV_MPRCL(stat_idx),
 543                            vsi->stat_offsets_loaded,
 544                            &oes->rx_multicast, &es->rx_multicast);
 545         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 546                            I40E_GLV_BPRCL(stat_idx),
 547                            vsi->stat_offsets_loaded,
 548                            &oes->rx_broadcast, &es->rx_broadcast);
 549
 550         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 551                            I40E_GLV_GOTCL(stat_idx),
 552                            vsi->stat_offsets_loaded,
 553                            &oes->tx_bytes, &es->tx_bytes);
 554         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 555                            I40E_GLV_UPTCL(stat_idx),
 556                            vsi->stat_offsets_loaded,
 557                            &oes->tx_unicast, &es->tx_unicast);
 558         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 559                            I40E_GLV_MPTCL(stat_idx),
 560                            vsi->stat_offsets_loaded,
 561                            &oes->tx_multicast, &es->tx_multicast);
 562         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 563                            I40E_GLV_BPTCL(stat_idx),
 564                            vsi->stat_offsets_loaded,
 565                            &oes->tx_broadcast, &es->tx_broadcast);
 566         vsi->stat_offsets_loaded = true;
 567 }
 568
 569 /**
 570  * i40e_update_veb_stats - Update Switch component statistics
 571  * @veb: the VEB being updated
 572  **/
 573 static void i40e_update_veb_stats(struct i40e_veb *veb)
 574 {
 575         struct i40e_pf *pf = veb->pf;
 576         struct i40e_hw *hw = &pf->hw;
 577         struct i40e_eth_stats *oes;
 578         struct i40e_eth_stats *es;     /* device's eth stats */
 579         int idx = 0;
 580
 581         idx = veb->stats_idx;
 582         es = &veb->stats;
 583         oes = &veb->stats_offsets;
 584
 585         /* Gather up the stats that the hw collects */
 586         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 587                            veb->stat_offsets_loaded,
 588                            &oes->tx_discards, &es->tx_discards);
 589         if (hw->revision_id > 0)
 590                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 591                                    veb->stat_offsets_loaded,
 592                                    &oes->rx_unknown_protocol,
 593                                    &es->rx_unknown_protocol);
 594         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 595                            veb->stat_offsets_loaded,
 596                            &oes->rx_bytes, &es->rx_bytes);
 597         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 598                            veb->stat_offsets_loaded,
 599                            &oes->rx_unicast, &es->rx_unicast);
 600         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 601                            veb->stat_offsets_loaded,
 602                            &oes->rx_multicast, &es->rx_multicast);
 603         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 604                            veb->stat_offsets_loaded,
 605                            &oes->rx_broadcast, &es->rx_broadcast);
 606
 607         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 608                            veb->stat_offsets_loaded,
 609                            &oes->tx_bytes, &es->tx_bytes);
 610         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 611                            veb->stat_offsets_loaded,
 612                            &oes->tx_unicast, &es->tx_unicast);
 613         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 614                            veb->stat_offsets_loaded,
 615                            &oes->tx_multicast, &es->tx_multicast);
 616         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 617                            veb->stat_offsets_loaded,
 618                            &oes->tx_broadcast, &es->tx_broadcast);
 619         veb->stat_offsets_loaded = true;
 620 }
 621
 622 /**
 623  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 624  * @pf: the corresponding PF
 625  *
 626  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 627  **/
 628 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 629 {
 630         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 631         struct i40e_hw_port_stats *nsd = &pf->stats;
 632         struct i40e_hw *hw = &pf->hw;
 633         u64 xoff = 0;
 634         u16 i, v;
 635
 636         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 637             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 638                 return;
 639
 640         xoff = nsd->link_xoff_rx;
 641         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 642                            pf->stat_offsets_loaded,
 643                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 644
 645         /* No new LFC xoff rx */
 646         if (!(nsd->link_xoff_rx - xoff))
 647                 return;
 648
 649         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 650         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
 651                 struct i40e_vsi *vsi = pf->vsi[v];
 652
 653                 if (!vsi)
 654                         continue;
 655
 656                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 657                         struct i40e_ring *ring = vsi->tx_rings[i];
 658                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 659                 }
 660         }
 661 }
 662
 663 /**
 664  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 665  * @pf: the corresponding PF
 666  *
 667  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 668  **/
 669 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 670 {
 671         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 672         struct i40e_hw_port_stats *nsd = &pf->stats;
 673         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 674         struct i40e_dcbx_config *dcb_cfg;
 675         struct i40e_hw *hw = &pf->hw;
 676         u16 i, v;
 677         u8 tc;
 678
 679         dcb_cfg = &hw->local_dcbx_config;
 680
 681         /* See if DCB enabled with PFC TC */
 682         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 683             !(dcb_cfg->pfc.pfcenable)) {
 684                 i40e_update_link_xoff_rx(pf);
 685                 return;
 686         }
 687
 688         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 689                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 690                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 691                                    pf->stat_offsets_loaded,
 692                                    &osd->priority_xoff_rx[i],
 693                                    &nsd->priority_xoff_rx[i]);
 694
 695                 /* No new PFC xoff rx */
 696                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 697                         continue;
 698                 /* Get the TC for given priority */
 699                 tc = dcb_cfg->etscfg.prioritytable[i];
 700                 xoff[tc] = true;
 701         }
 702
 703         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 704         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
 705                 struct i40e_vsi *vsi = pf->vsi[v];
 706
 707                 if (!vsi)
 708                         continue;
 709
 710                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 711                         struct i40e_ring *ring = vsi->tx_rings[i];
 712
 713                         tc = ring->dcb_tc;
 714                         if (xoff[tc])
 715                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 716                                           &ring->state);
 717                 }
 718         }
 719 }
 720
 721 /**
 722  * i40e_update_stats - Update the board statistics counters.
 723  * @vsi: the VSI to be updated
 724  *
 725  * There are a few instances where we store the same stat in a
 726  * couple of different structs.  This is partly because we have
 727  * the netdev stats that need to be filled out, which is slightly
 728  * different from the "eth_stats" defined by the chip and used in
 729  * VF communications.  We sort it all out here in a central place.
 730  **/
 731 void i40e_update_stats(struct i40e_vsi *vsi)
 732 {
 733         struct i40e_pf *pf = vsi->back;
 734         struct i40e_hw *hw = &pf->hw;
 735         struct rtnl_link_stats64 *ons;
 736         struct rtnl_link_stats64 *ns;   /* netdev stats */
 737         struct i40e_eth_stats *oes;
 738         struct i40e_eth_stats *es;     /* device's eth stats */
 739         u32 tx_restart, tx_busy;
 740         u32 rx_page, rx_buf;
 741         u64 rx_p, rx_b;
 742         u64 tx_p, tx_b;
 743         int i;
 744         u16 q;
 745
 746         if (test_bit(__I40E_DOWN, &vsi->state) ||
 747             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 748                 return;
 749
 750         ns = i40e_get_vsi_stats_struct(vsi);
 751         ons = &vsi->net_stats_offsets;
 752         es = &vsi->eth_stats;
 753         oes = &vsi->eth_stats_offsets;
 754
 755         /* Gather up the netdev and vsi stats that the driver collects
 756          * on the fly during packet processing
 757          */
 758         rx_b = rx_p = 0;
 759         tx_b = tx_p = 0;
 760         tx_restart = tx_busy = 0;
 761         rx_page = 0;
 762         rx_buf = 0;
 763         rcu_read_lock();
 764         for (q = 0; q < vsi->num_queue_pairs; q++) {
 765                 struct i40e_ring *p;
 766                 u64 bytes, packets;
 767                 unsigned int start;
 768
 769                 /* locate Tx ring */
 770                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 771
 772                 do {
 773                         start = u64_stats_fetch_begin_bh(&p->syncp);
 774                         packets = p->stats.packets;
 775                         bytes = p->stats.bytes;
 776                 } while (u64_stats_fetch_retry_bh(&p->syncp, start));
 777                 tx_b += bytes;
 778                 tx_p += packets;
 779                 tx_restart += p->tx_stats.restart_queue;
 780                 tx_busy += p->tx_stats.tx_busy;
 781
 782                 /* Rx queue is part of the same block as Tx queue */
 783                 p = &p[1];
 784                 do {
 785                         start = u64_stats_fetch_begin_bh(&p->syncp);
 786                         packets = p->stats.packets;
 787                         bytes = p->stats.bytes;
 788                 } while (u64_stats_fetch_retry_bh(&p->syncp, start));
 789                 rx_b += bytes;
 790                 rx_p += packets;
 791                 rx_buf += p->rx_stats.alloc_buff_failed;
 792                 rx_page += p->rx_stats.alloc_page_failed;
 793         }
 794         rcu_read_unlock();
 795         vsi->tx_restart = tx_restart;
 796         vsi->tx_busy = tx_busy;
 797         vsi->rx_page_failed = rx_page;
 798         vsi->rx_buf_failed = rx_buf;
 799
 800         ns->rx_packets = rx_p;
 801         ns->rx_bytes = rx_b;
 802         ns->tx_packets = tx_p;
 803         ns->tx_bytes = tx_b;
 804
 805         i40e_update_eth_stats(vsi);
 806         /* update netdev stats from eth stats */
 807         ons->rx_errors = oes->rx_errors;
 808         ns->rx_errors = es->rx_errors;
 809         ons->tx_errors = oes->tx_errors;
 810         ns->tx_errors = es->tx_errors;
 811         ons->multicast = oes->rx_multicast;
 812         ns->multicast = es->rx_multicast;
 813         ons->tx_dropped = oes->tx_discards;
 814         ns->tx_dropped = es->tx_discards;
 815
 816         /* Get the port data only if this is the main PF VSI */
 817         if (vsi == pf->vsi[pf->lan_vsi]) {
 818                 struct i40e_hw_port_stats *nsd = &pf->stats;
 819                 struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 820
 821                 i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 822                                    I40E_GLPRT_GORCL(hw->port),
 823                                    pf->stat_offsets_loaded,
 824                                    &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 825                 i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 826                                    I40E_GLPRT_GOTCL(hw->port),
 827                                    pf->stat_offsets_loaded,
 828                                    &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 829                 i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 830                                    pf->stat_offsets_loaded,
 831                                    &osd->eth.rx_discards,
 832                                    &nsd->eth.rx_discards);
 833                 i40e_stat_update32(hw, I40E_GLPRT_TDPC(hw->port),
 834                                    pf->stat_offsets_loaded,
 835                                    &osd->eth.tx_discards,
 836                                    &nsd->eth.tx_discards);
 837                 i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 838                                    I40E_GLPRT_MPRCL(hw->port),
 839                                    pf->stat_offsets_loaded,
 840                                    &osd->eth.rx_multicast,
 841                                    &nsd->eth.rx_multicast);
 842
 843                 i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 844                                    pf->stat_offsets_loaded,
 845                                    &osd->tx_dropped_link_down,
 846                                    &nsd->tx_dropped_link_down);
 847
 848                 i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 849                                    pf->stat_offsets_loaded,
 850                                    &osd->crc_errors, &nsd->crc_errors);
 851                 ns->rx_crc_errors = nsd->crc_errors;
 852
 853                 i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 854                                    pf->stat_offsets_loaded,
 855                                    &osd->illegal_bytes, &nsd->illegal_bytes);
 856                 ns->rx_errors = nsd->crc_errors
 857                                 + nsd->illegal_bytes;
 858
 859                 i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 860                                    pf->stat_offsets_loaded,
 861                                    &osd->mac_local_faults,
 862                                    &nsd->mac_local_faults);
 863                 i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 864                                    pf->stat_offsets_loaded,
 865                                    &osd->mac_remote_faults,
 866                                    &nsd->mac_remote_faults);
 867
 868                 i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 869                                    pf->stat_offsets_loaded,
 870                                    &osd->rx_length_errors,
 871                                    &nsd->rx_length_errors);
 872                 ns->rx_length_errors = nsd->rx_length_errors;
 873
 874                 i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 875                                    pf->stat_offsets_loaded,
 876                                    &osd->link_xon_rx, &nsd->link_xon_rx);
 877                 i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 878                                    pf->stat_offsets_loaded,
 879                                    &osd->link_xon_tx, &nsd->link_xon_tx);
 880                 i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
 881                 i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 882                                    pf->stat_offsets_loaded,
 883                                    &osd->link_xoff_tx, &nsd->link_xoff_tx);
 884
 885                 for (i = 0; i < 8; i++) {
 886                         i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 887                                            pf->stat_offsets_loaded,
 888                                            &osd->priority_xon_rx[i],
 889                                            &nsd->priority_xon_rx[i]);
 890                         i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 891                                            pf->stat_offsets_loaded,
 892                                            &osd->priority_xon_tx[i],
 893                                            &nsd->priority_xon_tx[i]);
 894                         i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
 895                                            pf->stat_offsets_loaded,
 896                                            &osd->priority_xoff_tx[i],
 897                                            &nsd->priority_xoff_tx[i]);
 898                         i40e_stat_update32(hw,
 899                                            I40E_GLPRT_RXON2OFFCNT(hw->port, i),
 900                                            pf->stat_offsets_loaded,
 901                                            &osd->priority_xon_2_xoff[i],
 902                                            &nsd->priority_xon_2_xoff[i]);
 903                 }
 904
 905                 i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
 906                                    I40E_GLPRT_PRC64L(hw->port),
 907                                    pf->stat_offsets_loaded,
 908                                    &osd->rx_size_64, &nsd->rx_size_64);
 909                 i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
 910                                    I40E_GLPRT_PRC127L(hw->port),
 911                                    pf->stat_offsets_loaded,
 912                                    &osd->rx_size_127, &nsd->rx_size_127);
 913                 i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
 914                                    I40E_GLPRT_PRC255L(hw->port),
 915                                    pf->stat_offsets_loaded,
 916                                    &osd->rx_size_255, &nsd->rx_size_255);
 917                 i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
 918                                    I40E_GLPRT_PRC511L(hw->port),
 919                                    pf->stat_offsets_loaded,
 920                                    &osd->rx_size_511, &nsd->rx_size_511);
 921                 i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
 922                                    I40E_GLPRT_PRC1023L(hw->port),
 923                                    pf->stat_offsets_loaded,
 924                                    &osd->rx_size_1023, &nsd->rx_size_1023);
 925                 i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
 926                                    I40E_GLPRT_PRC1522L(hw->port),
 927                                    pf->stat_offsets_loaded,
 928                                    &osd->rx_size_1522, &nsd->rx_size_1522);
 929                 i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
 930                                    I40E_GLPRT_PRC9522L(hw->port),
 931                                    pf->stat_offsets_loaded,
 932                                    &osd->rx_size_big, &nsd->rx_size_big);
 933
 934                 i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
 935                                    I40E_GLPRT_PTC64L(hw->port),
 936                                    pf->stat_offsets_loaded,
 937                                    &osd->tx_size_64, &nsd->tx_size_64);
 938                 i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
 939                                    I40E_GLPRT_PTC127L(hw->port),
 940                                    pf->stat_offsets_loaded,
 941                                    &osd->tx_size_127, &nsd->tx_size_127);
 942                 i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
 943                                    I40E_GLPRT_PTC255L(hw->port),
 944                                    pf->stat_offsets_loaded,
 945                                    &osd->tx_size_255, &nsd->tx_size_255);
 946                 i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
 947                                    I40E_GLPRT_PTC511L(hw->port),
 948                                    pf->stat_offsets_loaded,
 949                                    &osd->tx_size_511, &nsd->tx_size_511);
 950                 i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
 951                                    I40E_GLPRT_PTC1023L(hw->port),
 952                                    pf->stat_offsets_loaded,
 953                                    &osd->tx_size_1023, &nsd->tx_size_1023);
 954                 i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
 955                                    I40E_GLPRT_PTC1522L(hw->port),
 956                                    pf->stat_offsets_loaded,
 957                                    &osd->tx_size_1522, &nsd->tx_size_1522);
 958                 i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
 959                                    I40E_GLPRT_PTC9522L(hw->port),
 960                                    pf->stat_offsets_loaded,
 961                                    &osd->tx_size_big, &nsd->tx_size_big);
 962
 963                 i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
 964                                    pf->stat_offsets_loaded,
 965                                    &osd->rx_undersize, &nsd->rx_undersize);
 966                 i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
 967                                    pf->stat_offsets_loaded,
 968                                    &osd->rx_fragments, &nsd->rx_fragments);
 969                 i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
 970                                    pf->stat_offsets_loaded,
 971                                    &osd->rx_oversize, &nsd->rx_oversize);
 972                 i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
 973                                    pf->stat_offsets_loaded,
 974                                    &osd->rx_jabber, &nsd->rx_jabber);
 975         }
 976
 977         pf->stat_offsets_loaded = true;
 978 }
 979
 980 /**
 981  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
 982  * @vsi: the VSI to be searched
 983  * @macaddr: the MAC address
 984  * @vlan: the vlan
 985  * @is_vf: make sure its a vf filter, else doesn't matter
 986  * @is_netdev: make sure its a netdev filter, else doesn't matter
 987  *
 988  * Returns ptr to the filter object or NULL
 989  **/
 990 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
 991                                                 u8 *macaddr, s16 vlan,
 992                                                 bool is_vf, bool is_netdev)
 993 {
 994         struct i40e_mac_filter *f;
 995
 996         if (!vsi || !macaddr)
 997                 return NULL;
 998
 999         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1000                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1001                     (vlan == f->vlan)    &&
1002                     (!is_vf || f->is_vf) &&
1003                     (!is_netdev || f->is_netdev))
1004                         return f;
1005         }
1006         return NULL;
1007 }
1008
1009 /**
1010  * i40e_find_mac - Find a mac addr in the macvlan filters list
1011  * @vsi: the VSI to be searched
1012  * @macaddr: the MAC address we are searching for
1013  * @is_vf: make sure its a vf filter, else doesn't matter
1014  * @is_netdev: make sure its a netdev filter, else doesn't matter
1015  *
1016  * Returns the first filter with the provided MAC address or NULL if
1017  * MAC address was not found
1018  **/
1019 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1020                                       bool is_vf, bool is_netdev)
1021 {
1022         struct i40e_mac_filter *f;
1023
1024         if (!vsi || !macaddr)
1025                 return NULL;
1026
1027         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1028                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1029                     (!is_vf || f->is_vf) &&
1030                     (!is_netdev || f->is_netdev))
1031                         return f;
1032         }
1033         return NULL;
1034 }
1035
1036 /**
1037  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1038  * @vsi: the VSI to be searched
1039  *
1040  * Returns true if VSI is in vlan mode or false otherwise
1041  **/
1042 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1043 {
1044         struct i40e_mac_filter *f;
1045
1046         /* Only -1 for all the filters denotes not in vlan mode
1047          * so we have to go through all the list in order to make sure
1048          */
1049         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1050                 if (f->vlan >= 0)
1051                         return true;
1052         }
1053
1054         return false;
1055 }
1056
1057 /**
1058  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1059  * @vsi: the VSI to be searched
1060  * @macaddr: the mac address to be filtered
1061  * @is_vf: true if it is a vf
1062  * @is_netdev: true if it is a netdev
1063  *
1064  * Goes through all the macvlan filters and adds a
1065  * macvlan filter for each unique vlan that already exists
1066  *
1067  * Returns first filter found on success, else NULL
1068  **/
1069 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1070                                              bool is_vf, bool is_netdev)
1071 {
1072         struct i40e_mac_filter *f;
1073
1074         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1075                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1076                                       is_vf, is_netdev)) {
1077                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1078                                              is_vf, is_netdev))
1079                                 return NULL;
1080                 }
1081         }
1082
1083         return list_first_entry_or_null(&vsi->mac_filter_list,
1084                                         struct i40e_mac_filter, list);
1085 }
1086
1087 /**
1088  * i40e_add_filter - Add a mac/vlan filter to the VSI
1089  * @vsi: the VSI to be searched
1090  * @macaddr: the MAC address
1091  * @vlan: the vlan
1092  * @is_vf: make sure its a vf filter, else doesn't matter
1093  * @is_netdev: make sure its a netdev filter, else doesn't matter
1094  *
1095  * Returns ptr to the filter object or NULL when no memory available.
1096  **/
1097 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1098                                         u8 *macaddr, s16 vlan,
1099                                         bool is_vf, bool is_netdev)
1100 {
1101         struct i40e_mac_filter *f;
1102
1103         if (!vsi || !macaddr)
1104                 return NULL;
1105
1106         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1107         if (!f) {
1108                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1109                 if (!f)
1110                         goto add_filter_out;
1111
1112                 memcpy(f->macaddr, macaddr, ETH_ALEN);
1113                 f->vlan = vlan;
1114                 f->changed = true;
1115
1116                 INIT_LIST_HEAD(&f->list);
1117                 list_add(&f->list, &vsi->mac_filter_list);
1118         }
1119
1120         /* increment counter and add a new flag if needed */
1121         if (is_vf) {
1122                 if (!f->is_vf) {
1123                         f->is_vf = true;
1124                         f->counter++;
1125                 }
1126         } else if (is_netdev) {
1127                 if (!f->is_netdev) {
1128                         f->is_netdev = true;
1129                         f->counter++;
1130                 }
1131         } else {
1132                 f->counter++;
1133         }
1134
1135         /* changed tells sync_filters_subtask to
1136          * push the filter down to the firmware
1137          */
1138         if (f->changed) {
1139                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1140                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1141         }
1142
1143 add_filter_out:
1144         return f;
1145 }
1146
1147 /**
1148  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1149  * @vsi: the VSI to be searched
1150  * @macaddr: the MAC address
1151  * @vlan: the vlan
1152  * @is_vf: make sure it's a vf filter, else doesn't matter
1153  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1154  **/
1155 void i40e_del_filter(struct i40e_vsi *vsi,
1156                      u8 *macaddr, s16 vlan,
1157                      bool is_vf, bool is_netdev)
1158 {
1159         struct i40e_mac_filter *f;
1160
1161         if (!vsi || !macaddr)
1162                 return;
1163
1164         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1165         if (!f || f->counter == 0)
1166                 return;
1167
1168         if (is_vf) {
1169                 if (f->is_vf) {
1170                         f->is_vf = false;
1171                         f->counter--;
1172                 }
1173         } else if (is_netdev) {
1174                 if (f->is_netdev) {
1175                         f->is_netdev = false;
1176                         f->counter--;
1177                 }
1178         } else {
1179                 /* make sure we don't remove a filter in use by vf or netdev */
1180                 int min_f = 0;
1181                 min_f += (f->is_vf ? 1 : 0);
1182                 min_f += (f->is_netdev ? 1 : 0);
1183
1184                 if (f->counter > min_f)
1185                         f->counter--;
1186         }
1187
1188         /* counter == 0 tells sync_filters_subtask to
1189          * remove the filter from the firmware's list
1190          */
1191         if (f->counter == 0) {
1192                 f->changed = true;
1193                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1194                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1195         }
1196 }
1197
1198 /**
1199  * i40e_set_mac - NDO callback to set mac address
1200  * @netdev: network interface device structure
1201  * @p: pointer to an address structure
1202  *
1203  * Returns 0 on success, negative on failure
1204  **/
1205 static int i40e_set_mac(struct net_device *netdev, void *p)
1206 {
1207         struct i40e_netdev_priv *np = netdev_priv(netdev);
1208         struct i40e_vsi *vsi = np->vsi;
1209         struct sockaddr *addr = p;
1210         struct i40e_mac_filter *f;
1211
1212         if (!is_valid_ether_addr(addr->sa_data))
1213                 return -EADDRNOTAVAIL;
1214
1215         netdev_info(netdev, "set mac address=%pM\n", addr->sa_data);
1216
1217         if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
1218                 return 0;
1219
1220         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1221             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1222                 return -EADDRNOTAVAIL;
1223
1224         if (vsi->type == I40E_VSI_MAIN) {
1225                 i40e_status ret;
1226                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1227                                                 I40E_AQC_WRITE_TYPE_LAA_ONLY,
1228                                                 addr->sa_data, NULL);
1229                 if (ret) {
1230                         netdev_info(netdev,
1231                                     "Addr change for Main VSI failed: %d\n",
1232                                     ret);
1233                         return -EADDRNOTAVAIL;
1234                 }
1235
1236                 memcpy(vsi->back->hw.mac.addr, addr->sa_data, netdev->addr_len);
1237         }
1238
1239         /* In order to be sure to not drop any packets, add the new address
1240          * then delete the old one.
1241          */
1242         f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY, false, false);
1243         if (!f)
1244                 return -ENOMEM;
1245
1246         i40e_sync_vsi_filters(vsi);
1247         i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY, false, false);
1248         i40e_sync_vsi_filters(vsi);
1249
1250         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1251
1252         return 0;
1253 }
1254
1255 /**
1256  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1257  * @vsi: the VSI being setup
1258  * @ctxt: VSI context structure
1259  * @enabled_tc: Enabled TCs bitmap
1260  * @is_add: True if called before Add VSI
1261  *
1262  * Setup VSI queue mapping for enabled traffic classes.
1263  **/
1264 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1265                                      struct i40e_vsi_context *ctxt,
1266                                      u8 enabled_tc,
1267                                      bool is_add)
1268 {
1269         struct i40e_pf *pf = vsi->back;
1270         u16 sections = 0;
1271         u8 netdev_tc = 0;
1272         u16 numtc = 0;
1273         u16 qcount;
1274         u8 offset;
1275         u16 qmap;
1276         int i;
1277         u16 num_tc_qps = 0;
1278
1279         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1280         offset = 0;
1281
1282         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1283                 /* Find numtc from enabled TC bitmap */
1284                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1285                         if (enabled_tc & (1 << i)) /* TC is enabled */
1286                                 numtc++;
1287                 }
1288                 if (!numtc) {
1289                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1290                         numtc = 1;
1291                 }
1292         } else {
1293                 /* At least TC0 is enabled in case of non-DCB case */
1294                 numtc = 1;
1295         }
1296
1297         vsi->tc_config.numtc = numtc;
1298         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1299         /* Number of queues per enabled TC */
1300         num_tc_qps = rounddown_pow_of_two(vsi->alloc_queue_pairs/numtc);
1301         num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
1302
1303         /* Setup queue offset/count for all TCs for given VSI */
1304         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1305                 /* See if the given TC is enabled for the given VSI */
1306                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1307                         int pow, num_qps;
1308
1309                         switch (vsi->type) {
1310                         case I40E_VSI_MAIN:
1311                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1312                                 break;
1313                         case I40E_VSI_FDIR:
1314                         case I40E_VSI_SRIOV:
1315                         case I40E_VSI_VMDQ2:
1316                         default:
1317                                 qcount = num_tc_qps;
1318                                 WARN_ON(i != 0);
1319                                 break;
1320                         }
1321                         vsi->tc_config.tc_info[i].qoffset = offset;
1322                         vsi->tc_config.tc_info[i].qcount = qcount;
1323
1324                         /* find the power-of-2 of the number of queue pairs */
1325                         num_qps = qcount;
1326                         pow = 0;
1327                         while (num_qps && ((1 << pow) < qcount)) {
1328                                 pow++;
1329                                 num_qps >>= 1;
1330                         }
1331
1332                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1333                         qmap =
1334                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1335                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1336
1337                         offset += qcount;
1338                 } else {
1339                         /* TC is not enabled so set the offset to
1340                          * default queue and allocate one queue
1341                          * for the given TC.
1342                          */
1343                         vsi->tc_config.tc_info[i].qoffset = 0;
1344                         vsi->tc_config.tc_info[i].qcount = 1;
1345                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1346
1347                         qmap = 0;
1348                 }
1349                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1350         }
1351
1352         /* Set actual Tx/Rx queue pairs */
1353         vsi->num_queue_pairs = offset;
1354
1355         /* Scheduler section valid can only be set for ADD VSI */
1356         if (is_add) {
1357                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1358
1359                 ctxt->info.up_enable_bits = enabled_tc;
1360         }
1361         if (vsi->type == I40E_VSI_SRIOV) {
1362                 ctxt->info.mapping_flags |=
1363                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1364                 for (i = 0; i < vsi->num_queue_pairs; i++)
1365                         ctxt->info.queue_mapping[i] =
1366                                                cpu_to_le16(vsi->base_queue + i);
1367         } else {
1368                 ctxt->info.mapping_flags |=
1369                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1370                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1371         }
1372         ctxt->info.valid_sections |= cpu_to_le16(sections);
1373 }
1374
1375 /**
1376  * i40e_set_rx_mode - NDO callback to set the netdev filters
1377  * @netdev: network interface device structure
1378  **/
1379 static void i40e_set_rx_mode(struct net_device *netdev)
1380 {
1381         struct i40e_netdev_priv *np = netdev_priv(netdev);
1382         struct i40e_mac_filter *f, *ftmp;
1383         struct i40e_vsi *vsi = np->vsi;
1384         struct netdev_hw_addr *uca;
1385         struct netdev_hw_addr *mca;
1386         struct netdev_hw_addr *ha;
1387
1388         /* add addr if not already in the filter list */
1389         netdev_for_each_uc_addr(uca, netdev) {
1390                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1391                         if (i40e_is_vsi_in_vlan(vsi))
1392                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1393                                                      false, true);
1394                         else
1395                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1396                                                 false, true);
1397                 }
1398         }
1399
1400         netdev_for_each_mc_addr(mca, netdev) {
1401                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1402                         if (i40e_is_vsi_in_vlan(vsi))
1403                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1404                                                      false, true);
1405                         else
1406                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1407                                                 false, true);
1408                 }
1409         }
1410
1411         /* remove filter if not in netdev list */
1412         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1413                 bool found = false;
1414
1415                 if (!f->is_netdev)
1416                         continue;
1417
1418                 if (is_multicast_ether_addr(f->macaddr)) {
1419                         netdev_for_each_mc_addr(mca, netdev) {
1420                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1421                                         found = true;
1422                                         break;
1423                                 }
1424                         }
1425                 } else {
1426                         netdev_for_each_uc_addr(uca, netdev) {
1427                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1428                                         found = true;
1429                                         break;
1430                                 }
1431                         }
1432
1433                         for_each_dev_addr(netdev, ha) {
1434                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1435                                         found = true;
1436                                         break;
1437                                 }
1438                         }
1439                 }
1440                 if (!found)
1441                         i40e_del_filter(
1442                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1443         }
1444
1445         /* check for other flag changes */
1446         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1447                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1448                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1449         }
1450 }
1451
1452 /**
1453  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1454  * @vsi: ptr to the VSI
1455  *
1456  * Push any outstanding VSI filter changes through the AdminQ.
1457  *
1458  * Returns 0 or error value
1459  **/
1460 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1461 {
1462         struct i40e_mac_filter *f, *ftmp;
1463         bool promisc_forced_on = false;
1464         bool add_happened = false;
1465         int filter_list_len = 0;
1466         u32 changed_flags = 0;
1467         i40e_status aq_ret = 0;
1468         struct i40e_pf *pf;
1469         int num_add = 0;
1470         int num_del = 0;
1471         u16 cmd_flags;
1472
1473         /* empty array typed pointers, kcalloc later */
1474         struct i40e_aqc_add_macvlan_element_data *add_list;
1475         struct i40e_aqc_remove_macvlan_element_data *del_list;
1476
1477         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1478                 usleep_range(1000, 2000);
1479         pf = vsi->back;
1480
1481         if (vsi->netdev) {
1482                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1483                 vsi->current_netdev_flags = vsi->netdev->flags;
1484         }
1485
1486         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1487                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1488
1489                 filter_list_len = pf->hw.aq.asq_buf_size /
1490                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1491                 del_list = kcalloc(filter_list_len,
1492                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1493                             GFP_KERNEL);
1494                 if (!del_list)
1495                         return -ENOMEM;
1496
1497                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1498                         if (!f->changed)
1499                                 continue;
1500
1501                         if (f->counter != 0)
1502                                 continue;
1503                         f->changed = false;
1504                         cmd_flags = 0;
1505
1506                         /* add to delete list */
1507                         memcpy(del_list[num_del].mac_addr,
1508                                f->macaddr, ETH_ALEN);
1509                         del_list[num_del].vlan_tag =
1510                                 cpu_to_le16((u16)(f->vlan ==
1511                                             I40E_VLAN_ANY ? 0 : f->vlan));
1512
1513                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1514                         del_list[num_del].flags = cmd_flags;
1515                         num_del++;
1516
1517                         /* unlink from filter list */
1518                         list_del(&f->list);
1519                         kfree(f);
1520
1521                         /* flush a full buffer */
1522                         if (num_del == filter_list_len) {
1523                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1524                                             vsi->seid, del_list, num_del,
1525                                             NULL);
1526                                 num_del = 0;
1527                                 memset(del_list, 0, sizeof(*del_list));
1528
1529                                 if (aq_ret)
1530                                         dev_info(&pf->pdev->dev,
1531                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1532                                                  aq_ret,
1533                                                  pf->hw.aq.asq_last_status);
1534                         }
1535                 }
1536                 if (num_del) {
1537                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1538                                                      del_list, num_del, NULL);
1539                         num_del = 0;
1540
1541                         if (aq_ret)
1542                                 dev_info(&pf->pdev->dev,
1543                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1544                                          aq_ret, pf->hw.aq.asq_last_status);
1545                 }
1546
1547                 kfree(del_list);
1548                 del_list = NULL;
1549
1550                 /* do all the adds now */
1551                 filter_list_len = pf->hw.aq.asq_buf_size /
1552                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1553                 add_list = kcalloc(filter_list_len,
1554                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1555                                GFP_KERNEL);
1556                 if (!add_list)
1557                         return -ENOMEM;
1558
1559                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1560                         if (!f->changed)
1561                                 continue;
1562
1563                         if (f->counter == 0)
1564                                 continue;
1565                         f->changed = false;
1566                         add_happened = true;
1567                         cmd_flags = 0;
1568
1569                         /* add to add array */
1570                         memcpy(add_list[num_add].mac_addr,
1571                                f->macaddr, ETH_ALEN);
1572                         add_list[num_add].vlan_tag =
1573                                 cpu_to_le16(
1574                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1575                         add_list[num_add].queue_number = 0;
1576
1577                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1578                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1579                         num_add++;
1580
1581                         /* flush a full buffer */
1582                         if (num_add == filter_list_len) {
1583                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1584                                                              add_list, num_add,
1585                                                              NULL);
1586                                 num_add = 0;
1587
1588                                 if (aq_ret)
1589                                         break;
1590                                 memset(add_list, 0, sizeof(*add_list));
1591                         }
1592                 }
1593                 if (num_add) {
1594                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1595                                                      add_list, num_add, NULL);
1596                         num_add = 0;
1597                 }
1598                 kfree(add_list);
1599                 add_list = NULL;
1600
1601                 if (add_happened && (!aq_ret)) {
1602                         /* do nothing */;
1603                 } else if (add_happened && (aq_ret)) {
1604                         dev_info(&pf->pdev->dev,
1605                                  "add filter failed, err %d, aq_err %d\n",
1606                                  aq_ret, pf->hw.aq.asq_last_status);
1607                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1608                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1609                                       &vsi->state)) {
1610                                 promisc_forced_on = true;
1611                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1612                                         &vsi->state);
1613                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1614                         }
1615                 }
1616         }
1617
1618         /* check for changes in promiscuous modes */
1619         if (changed_flags & IFF_ALLMULTI) {
1620                 bool cur_multipromisc;
1621                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1622                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1623                                                                vsi->seid,
1624                                                                cur_multipromisc,
1625                                                                NULL);
1626                 if (aq_ret)
1627                         dev_info(&pf->pdev->dev,
1628                                  "set multi promisc failed, err %d, aq_err %d\n",
1629                                  aq_ret, pf->hw.aq.asq_last_status);
1630         }
1631         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1632                 bool cur_promisc;
1633                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1634                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1635                                         &vsi->state));
1636                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1637                                                              vsi->seid,
1638                                                              cur_promisc, NULL);
1639                 if (aq_ret)
1640                         dev_info(&pf->pdev->dev,
1641                                  "set uni promisc failed, err %d, aq_err %d\n",
1642                                  aq_ret, pf->hw.aq.asq_last_status);
1643                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1644                                                    vsi->seid,
1645                                                    cur_promisc, NULL);
1646                 if (aq_ret)
1647                         dev_info(&pf->pdev->dev,
1648                                  "set brdcast promisc failed, err %d, aq_err %d\n",
1649                                  aq_ret, pf->hw.aq.asq_last_status);
1650         }
1651
1652         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1653         return 0;
1654 }
1655
1656 /**
1657  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1658  * @pf: board private structure
1659  **/
1660 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1661 {
1662         int v;
1663
1664         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1665                 return;
1666         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1667
1668         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
1669                 if (pf->vsi[v] &&
1670                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1671                         i40e_sync_vsi_filters(pf->vsi[v]);
1672         }
1673 }
1674
1675 /**
1676  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1677  * @netdev: network interface device structure
1678  * @new_mtu: new value for maximum frame size
1679  *
1680  * Returns 0 on success, negative on failure
1681  **/
1682 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1683 {
1684         struct i40e_netdev_priv *np = netdev_priv(netdev);
1685         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
1686         struct i40e_vsi *vsi = np->vsi;
1687
1688         /* MTU < 68 is an error and causes problems on some kernels */
1689         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1690                 return -EINVAL;
1691
1692         netdev_info(netdev, "changing MTU from %d to %d\n",
1693                     netdev->mtu, new_mtu);
1694         netdev->mtu = new_mtu;
1695         if (netif_running(netdev))
1696                 i40e_vsi_reinit_locked(vsi);
1697
1698         return 0;
1699 }
1700
1701 /**
1702  * i40e_ioctl - Access the hwtstamp interface
1703  * @netdev: network interface device structure
1704  * @ifr: interface request data
1705  * @cmd: ioctl command
1706  **/
1707 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1708 {
1709         struct i40e_netdev_priv *np = netdev_priv(netdev);
1710         struct i40e_pf *pf = np->vsi->back;
1711
1712         switch (cmd) {
1713         case SIOCGHWTSTAMP:
1714                 return i40e_ptp_get_ts_config(pf, ifr);
1715         case SIOCSHWTSTAMP:
1716                 return i40e_ptp_set_ts_config(pf, ifr);
1717         default:
1718                 return -EOPNOTSUPP;
1719         }
1720 }
1721
1722 /**
1723  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1724  * @vsi: the vsi being adjusted
1725  **/
1726 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1727 {
1728         struct i40e_vsi_context ctxt;
1729         i40e_status ret;
1730
1731         if ((vsi->info.valid_sections &
1732              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1733             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1734                 return;  /* already enabled */
1735
1736         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1737         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1738                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1739
1740         ctxt.seid = vsi->seid;
1741         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1742         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1743         if (ret) {
1744                 dev_info(&vsi->back->pdev->dev,
1745                          "%s: update vsi failed, aq_err=%d\n",
1746                          __func__, vsi->back->hw.aq.asq_last_status);
1747         }
1748 }
1749
1750 /**
1751  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1752  * @vsi: the vsi being adjusted
1753  **/
1754 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1755 {
1756         struct i40e_vsi_context ctxt;
1757         i40e_status ret;
1758
1759         if ((vsi->info.valid_sections &
1760              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1761             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1762              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1763                 return;  /* already disabled */
1764
1765         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1766         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1767                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1768
1769         ctxt.seid = vsi->seid;
1770         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1771         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1772         if (ret) {
1773                 dev_info(&vsi->back->pdev->dev,
1774                          "%s: update vsi failed, aq_err=%d\n",
1775                          __func__, vsi->back->hw.aq.asq_last_status);
1776         }
1777 }
1778
1779 /**
1780  * i40e_vlan_rx_register - Setup or shutdown vlan offload
1781  * @netdev: network interface to be adjusted
1782  * @features: netdev features to test if VLAN offload is enabled or not
1783  **/
1784 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
1785 {
1786         struct i40e_netdev_priv *np = netdev_priv(netdev);
1787         struct i40e_vsi *vsi = np->vsi;
1788
1789         if (features & NETIF_F_HW_VLAN_CTAG_RX)
1790                 i40e_vlan_stripping_enable(vsi);
1791         else
1792                 i40e_vlan_stripping_disable(vsi);
1793 }
1794
1795 /**
1796  * i40e_vsi_add_vlan - Add vsi membership for given vlan
1797  * @vsi: the vsi being configured
1798  * @vid: vlan id to be added (0 = untagged only , -1 = any)
1799  **/
1800 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
1801 {
1802         struct i40e_mac_filter *f, *add_f;
1803         bool is_netdev, is_vf;
1804
1805         is_vf = (vsi->type == I40E_VSI_SRIOV);
1806         is_netdev = !!(vsi->netdev);
1807
1808         if (is_netdev) {
1809                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
1810                                         is_vf, is_netdev);
1811                 if (!add_f) {
1812                         dev_info(&vsi->back->pdev->dev,
1813                                  "Could not add vlan filter %d for %pM\n",
1814                                  vid, vsi->netdev->dev_addr);
1815                         return -ENOMEM;
1816                 }
1817         }
1818
1819         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1820                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
1821                 if (!add_f) {
1822                         dev_info(&vsi->back->pdev->dev,
1823                                  "Could not add vlan filter %d for %pM\n",
1824                                  vid, f->macaddr);
1825                         return -ENOMEM;
1826                 }
1827         }
1828
1829         /* Now if we add a vlan tag, make sure to check if it is the first
1830          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
1831          * with 0, so we now accept untagged and specified tagged traffic
1832          * (and not any taged and untagged)
1833          */
1834         if (vid > 0) {
1835                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
1836                                                   I40E_VLAN_ANY,
1837                                                   is_vf, is_netdev)) {
1838                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
1839                                         I40E_VLAN_ANY, is_vf, is_netdev);
1840                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
1841                                                 is_vf, is_netdev);
1842                         if (!add_f) {
1843                                 dev_info(&vsi->back->pdev->dev,
1844                                          "Could not add filter 0 for %pM\n",
1845                                          vsi->netdev->dev_addr);
1846                                 return -ENOMEM;
1847                         }
1848                 }
1849         }
1850
1851         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
1852         if (vid > 0 && !vsi->info.pvid) {
1853                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1854                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1855                                              is_vf, is_netdev)) {
1856                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1857                                                 is_vf, is_netdev);
1858                                 add_f = i40e_add_filter(vsi, f->macaddr,
1859                                                         0, is_vf, is_netdev);
1860                                 if (!add_f) {
1861                                         dev_info(&vsi->back->pdev->dev,
1862                                                  "Could not add filter 0 for %pM\n",
1863                                                  f->macaddr);
1864                                         return -ENOMEM;
1865                                 }
1866                         }
1867                 }
1868         }
1869
1870         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1871             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1872                 return 0;
1873
1874         return i40e_sync_vsi_filters(vsi);
1875 }
1876
1877 /**
1878  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
1879  * @vsi: the vsi being configured
1880  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
1881  *
1882  * Return: 0 on success or negative otherwise
1883  **/
1884 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
1885 {
1886         struct net_device *netdev = vsi->netdev;
1887         struct i40e_mac_filter *f, *add_f;
1888         bool is_vf, is_netdev;
1889         int filter_count = 0;
1890
1891         is_vf = (vsi->type == I40E_VSI_SRIOV);
1892         is_netdev = !!(netdev);
1893
1894         if (is_netdev)
1895                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
1896
1897         list_for_each_entry(f, &vsi->mac_filter_list, list)
1898                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
1899
1900         /* go through all the filters for this VSI and if there is only
1901          * vid == 0 it means there are no other filters, so vid 0 must
1902          * be replaced with -1. This signifies that we should from now
1903          * on accept any traffic (with any tag present, or untagged)
1904          */
1905         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1906                 if (is_netdev) {
1907                         if (f->vlan &&
1908                             ether_addr_equal(netdev->dev_addr, f->macaddr))
1909                                 filter_count++;
1910                 }
1911
1912                 if (f->vlan)
1913                         filter_count++;
1914         }
1915
1916         if (!filter_count && is_netdev) {
1917                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
1918                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1919                                     is_vf, is_netdev);
1920                 if (!f) {
1921                         dev_info(&vsi->back->pdev->dev,
1922                                  "Could not add filter %d for %pM\n",
1923                                  I40E_VLAN_ANY, netdev->dev_addr);
1924                         return -ENOMEM;
1925                 }
1926         }
1927
1928         if (!filter_count) {
1929                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1930                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
1931                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1932                                             is_vf, is_netdev);
1933                         if (!add_f) {
1934                                 dev_info(&vsi->back->pdev->dev,
1935                                          "Could not add filter %d for %pM\n",
1936                                          I40E_VLAN_ANY, f->macaddr);
1937                                 return -ENOMEM;
1938                         }
1939                 }
1940         }
1941
1942         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1943             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1944                 return 0;
1945
1946         return i40e_sync_vsi_filters(vsi);
1947 }
1948
1949 /**
1950  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
1951  * @netdev: network interface to be adjusted
1952  * @vid: vlan id to be added
1953  *
1954  * net_device_ops implementation for adding vlan ids
1955  **/
1956 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
1957                                 __always_unused __be16 proto, u16 vid)
1958 {
1959         struct i40e_netdev_priv *np = netdev_priv(netdev);
1960         struct i40e_vsi *vsi = np->vsi;
1961         int ret = 0;
1962
1963         if (vid > 4095)
1964                 return -EINVAL;
1965
1966         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
1967
1968         /* If the network stack called us with vid = 0, we should
1969          * indicate to i40e_vsi_add_vlan() that we want to receive
1970          * any traffic (i.e. with any vlan tag, or untagged)
1971          */
1972         ret = i40e_vsi_add_vlan(vsi, vid ? vid : I40E_VLAN_ANY);
1973
1974         if (!ret && (vid < VLAN_N_VID))
1975                 set_bit(vid, vsi->active_vlans);
1976
1977         return ret;
1978 }
1979
1980 /**
1981  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
1982  * @netdev: network interface to be adjusted
1983  * @vid: vlan id to be removed
1984  *
1985  * net_device_ops implementation for adding vlan ids
1986  **/
1987 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
1988                                  __always_unused __be16 proto, u16 vid)
1989 {
1990         struct i40e_netdev_priv *np = netdev_priv(netdev);
1991         struct i40e_vsi *vsi = np->vsi;
1992
1993         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
1994
1995         /* return code is ignored as there is nothing a user
1996          * can do about failure to remove and a log message was
1997          * already printed from the other function
1998          */
1999         i40e_vsi_kill_vlan(vsi, vid);
2000
2001         clear_bit(vid, vsi->active_vlans);
2002
2003         return 0;
2004 }
2005
2006 /**
2007  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2008  * @vsi: the vsi being brought back up
2009  **/
2010 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2011 {
2012         u16 vid;
2013
2014         if (!vsi->netdev)
2015                 return;
2016
2017         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2018
2019         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2020                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2021                                      vid);
2022 }
2023
2024 /**
2025  * i40e_vsi_add_pvid - Add pvid for the VSI
2026  * @vsi: the vsi being adjusted
2027  * @vid: the vlan id to set as a PVID
2028  **/
2029 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2030 {
2031         struct i40e_vsi_context ctxt;
2032         i40e_status aq_ret;
2033
2034         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2035         vsi->info.pvid = cpu_to_le16(vid);
2036         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2037                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2038                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2039
2040         ctxt.seid = vsi->seid;
2041         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2042         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2043         if (aq_ret) {
2044                 dev_info(&vsi->back->pdev->dev,
2045                          "%s: update vsi failed, aq_err=%d\n",
2046                          __func__, vsi->back->hw.aq.asq_last_status);
2047                 return -ENOENT;
2048         }
2049
2050         return 0;
2051 }
2052
2053 /**
2054  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2055  * @vsi: the vsi being adjusted
2056  *
2057  * Just use the vlan_rx_register() service to put it back to normal
2058  **/
2059 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2060 {
2061         i40e_vlan_stripping_disable(vsi);
2062
2063         vsi->info.pvid = 0;
2064 }
2065
2066 /**
2067  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2068  * @vsi: ptr to the VSI
2069  *
2070  * If this function returns with an error, then it's possible one or
2071  * more of the rings is populated (while the rest are not).  It is the
2072  * callers duty to clean those orphaned rings.
2073  *
2074  * Return 0 on success, negative on failure
2075  **/
2076 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2077 {
2078         int i, err = 0;
2079
2080         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2081                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2082
2083         return err;
2084 }
2085
2086 /**
2087  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2088  * @vsi: ptr to the VSI
2089  *
2090  * Free VSI's transmit software resources
2091  **/
2092 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2093 {
2094         int i;
2095
2096         if (!vsi->tx_rings)
2097                 return;
2098
2099         for (i = 0; i < vsi->num_queue_pairs; i++)
2100                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2101                         i40e_free_tx_resources(vsi->tx_rings[i]);
2102 }
2103
2104 /**
2105  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2106  * @vsi: ptr to the VSI
2107  *
2108  * If this function returns with an error, then it's possible one or
2109  * more of the rings is populated (while the rest are not).  It is the
2110  * callers duty to clean those orphaned rings.
2111  *
2112  * Return 0 on success, negative on failure
2113  **/
2114 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2115 {
2116         int i, err = 0;
2117
2118         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2119                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2120         return err;
2121 }
2122
2123 /**
2124  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2125  * @vsi: ptr to the VSI
2126  *
2127  * Free all receive software resources
2128  **/
2129 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2130 {
2131         int i;
2132
2133         if (!vsi->rx_rings)
2134                 return;
2135
2136         for (i = 0; i < vsi->num_queue_pairs; i++)
2137                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2138                         i40e_free_rx_resources(vsi->rx_rings[i]);
2139 }
2140
2141 /**
2142  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2143  * @ring: The Tx ring to configure
2144  *
2145  * Configure the Tx descriptor ring in the HMC context.
2146  **/
2147 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2148 {
2149         struct i40e_vsi *vsi = ring->vsi;
2150         u16 pf_q = vsi->base_queue + ring->queue_index;
2151         struct i40e_hw *hw = &vsi->back->hw;
2152         struct i40e_hmc_obj_txq tx_ctx;
2153         i40e_status err = 0;
2154         u32 qtx_ctl = 0;
2155
2156         /* some ATR related tx ring init */
2157         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2158                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2159                 ring->atr_count = 0;
2160         } else {
2161                 ring->atr_sample_rate = 0;
2162         }
2163
2164         /* initialize XPS */
2165         if (ring->q_vector && ring->netdev &&
2166             vsi->tc_config.numtc <= 1 &&
2167             !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2168                 netif_set_xps_queue(ring->netdev,
2169                                     &ring->q_vector->affinity_mask,
2170                                     ring->queue_index);
2171
2172         /* clear the context structure first */
2173         memset(&tx_ctx, 0, sizeof(tx_ctx));
2174
2175         tx_ctx.new_context = 1;
2176         tx_ctx.base = (ring->dma / 128);
2177         tx_ctx.qlen = ring->count;
2178         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2179                                                I40E_FLAG_FD_ATR_ENABLED));
2180         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2181
2182         /* As part of VSI creation/update, FW allocates certain
2183          * Tx arbitration queue sets for each TC enabled for
2184          * the VSI. The FW returns the handles to these queue
2185          * sets as part of the response buffer to Add VSI,
2186          * Update VSI, etc. AQ commands. It is expected that
2187          * these queue set handles be associated with the Tx
2188          * queues by the driver as part of the TX queue context
2189          * initialization. This has to be done regardless of
2190          * DCB as by default everything is mapped to TC0.
2191          */
2192         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2193         tx_ctx.rdylist_act = 0;
2194
2195         /* clear the context in the HMC */
2196         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2197         if (err) {
2198                 dev_info(&vsi->back->pdev->dev,
2199                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2200                          ring->queue_index, pf_q, err);
2201                 return -ENOMEM;
2202         }
2203
2204         /* set the context in the HMC */
2205         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2206         if (err) {
2207                 dev_info(&vsi->back->pdev->dev,
2208                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2209                          ring->queue_index, pf_q, err);
2210                 return -ENOMEM;
2211         }
2212
2213         /* Now associate this queue with this PCI function */
2214         if (vsi->type == I40E_VSI_VMDQ2)
2215                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2216         else
2217                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2218         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2219                     I40E_QTX_CTL_PF_INDX_MASK);
2220         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2221         i40e_flush(hw);
2222
2223         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2224
2225         /* cache tail off for easier writes later */
2226         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2227
2228         return 0;
2229 }
2230
2231 /**
2232  * i40e_configure_rx_ring - Configure a receive ring context
2233  * @ring: The Rx ring to configure
2234  *
2235  * Configure the Rx descriptor ring in the HMC context.
2236  **/
2237 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2238 {
2239         struct i40e_vsi *vsi = ring->vsi;
2240         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2241         u16 pf_q = vsi->base_queue + ring->queue_index;
2242         struct i40e_hw *hw = &vsi->back->hw;
2243         struct i40e_hmc_obj_rxq rx_ctx;
2244         i40e_status err = 0;
2245
2246         ring->state = 0;
2247
2248         /* clear the context structure first */
2249         memset(&rx_ctx, 0, sizeof(rx_ctx));
2250
2251         ring->rx_buf_len = vsi->rx_buf_len;
2252         ring->rx_hdr_len = vsi->rx_hdr_len;
2253
2254         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2255         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2256
2257         rx_ctx.base = (ring->dma / 128);
2258         rx_ctx.qlen = ring->count;
2259
2260         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2261                 set_ring_16byte_desc_enabled(ring);
2262                 rx_ctx.dsize = 0;
2263         } else {
2264                 rx_ctx.dsize = 1;
2265         }
2266
2267         rx_ctx.dtype = vsi->dtype;
2268         if (vsi->dtype) {
2269                 set_ring_ps_enabled(ring);
2270                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2271                                   I40E_RX_SPLIT_IP      |
2272                                   I40E_RX_SPLIT_TCP_UDP |
2273                                   I40E_RX_SPLIT_SCTP;
2274         } else {
2275                 rx_ctx.hsplit_0 = 0;
2276         }
2277
2278         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2279                                   (chain_len * ring->rx_buf_len));
2280         rx_ctx.tphrdesc_ena = 1;
2281         rx_ctx.tphwdesc_ena = 1;
2282         rx_ctx.tphdata_ena = 1;
2283         rx_ctx.tphhead_ena = 1;
2284         if (hw->revision_id == 0)
2285                 rx_ctx.lrxqthresh = 0;
2286         else
2287                 rx_ctx.lrxqthresh = 2;
2288         rx_ctx.crcstrip = 1;
2289         rx_ctx.l2tsel = 1;
2290         rx_ctx.showiv = 1;
2291
2292         /* clear the context in the HMC */
2293         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2294         if (err) {
2295                 dev_info(&vsi->back->pdev->dev,
2296                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2297                          ring->queue_index, pf_q, err);
2298                 return -ENOMEM;
2299         }
2300
2301         /* set the context in the HMC */
2302         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2303         if (err) {
2304                 dev_info(&vsi->back->pdev->dev,
2305                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2306                          ring->queue_index, pf_q, err);
2307                 return -ENOMEM;
2308         }
2309
2310         /* cache tail for quicker writes, and clear the reg before use */
2311         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2312         writel(0, ring->tail);
2313
2314         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2315
2316         return 0;
2317 }
2318
2319 /**
2320  * i40e_vsi_configure_tx - Configure the VSI for Tx
2321  * @vsi: VSI structure describing this set of rings and resources
2322  *
2323  * Configure the Tx VSI for operation.
2324  **/
2325 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2326 {
2327         int err = 0;
2328         u16 i;
2329
2330         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2331                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2332
2333         return err;
2334 }
2335
2336 /**
2337  * i40e_vsi_configure_rx - Configure the VSI for Rx
2338  * @vsi: the VSI being configured
2339  *
2340  * Configure the Rx VSI for operation.
2341  **/
2342 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2343 {
2344         int err = 0;
2345         u16 i;
2346
2347         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2348                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2349                                + ETH_FCS_LEN + VLAN_HLEN;
2350         else
2351                 vsi->max_frame = I40E_RXBUFFER_2048;
2352
2353         /* figure out correct receive buffer length */
2354         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2355                                     I40E_FLAG_RX_PS_ENABLED)) {
2356         case I40E_FLAG_RX_1BUF_ENABLED:
2357                 vsi->rx_hdr_len = 0;
2358                 vsi->rx_buf_len = vsi->max_frame;
2359                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2360                 break;
2361         case I40E_FLAG_RX_PS_ENABLED:
2362                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2363                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2364                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2365                 break;
2366         default:
2367                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2368                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2369                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2370                 break;
2371         }
2372
2373         /* round up for the chip's needs */
2374         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2375                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2376         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2377                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2378
2379         /* set up individual rings */
2380         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2381                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2382
2383         return err;
2384 }
2385
2386 /**
2387  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2388  * @vsi: ptr to the VSI
2389  **/
2390 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2391 {
2392         u16 qoffset, qcount;
2393         int i, n;
2394
2395         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2396                 return;
2397
2398         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2399                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2400                         continue;
2401
2402                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2403                 qcount = vsi->tc_config.tc_info[n].qcount;
2404                 for (i = qoffset; i < (qoffset + qcount); i++) {
2405                         struct i40e_ring *rx_ring = vsi->rx_rings[i];
2406                         struct i40e_ring *tx_ring = vsi->tx_rings[i];
2407                         rx_ring->dcb_tc = n;
2408                         tx_ring->dcb_tc = n;
2409                 }
2410         }
2411 }
2412
2413 /**
2414  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2415  * @vsi: ptr to the VSI
2416  **/
2417 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2418 {
2419         if (vsi->netdev)
2420                 i40e_set_rx_mode(vsi->netdev);
2421 }
2422
2423 /**
2424  * i40e_vsi_configure - Set up the VSI for action
2425  * @vsi: the VSI being configured
2426  **/
2427 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2428 {
2429         int err;
2430
2431         i40e_set_vsi_rx_mode(vsi);
2432         i40e_restore_vlan(vsi);
2433         i40e_vsi_config_dcb_rings(vsi);
2434         err = i40e_vsi_configure_tx(vsi);
2435         if (!err)
2436                 err = i40e_vsi_configure_rx(vsi);
2437
2438         return err;
2439 }
2440
2441 /**
2442  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2443  * @vsi: the VSI being configured
2444  **/
2445 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2446 {
2447         struct i40e_pf *pf = vsi->back;
2448         struct i40e_q_vector *q_vector;
2449         struct i40e_hw *hw = &pf->hw;
2450         u16 vector;
2451         int i, q;
2452         u32 val;
2453         u32 qp;
2454
2455         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2456          * and PFINT_LNKLSTn registers, e.g.:
2457          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2458          */
2459         qp = vsi->base_queue;
2460         vector = vsi->base_vector;
2461         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2462                 q_vector = vsi->q_vectors[i];
2463                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2464                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2465                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2466                      q_vector->rx.itr);
2467                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2468                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2469                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2470                      q_vector->tx.itr);
2471
2472                 /* Linked list for the queuepairs assigned to this vector */
2473                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2474                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2475                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2476                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2477                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2478                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2479                               (I40E_QUEUE_TYPE_TX
2480                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2481
2482                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2483
2484                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2485                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2486                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2487                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2488                               (I40E_QUEUE_TYPE_RX
2489                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2490
2491                         /* Terminate the linked list */
2492                         if (q == (q_vector->num_ringpairs - 1))
2493                                 val |= (I40E_QUEUE_END_OF_LIST
2494                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2495
2496                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2497                         qp++;
2498                 }
2499         }
2500
2501         i40e_flush(hw);
2502 }
2503
2504 /**
2505  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2506  * @hw: ptr to the hardware info
2507  **/
2508 static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
2509 {
2510         u32 val;
2511
2512         /* clear things first */
2513         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2514         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2515
2516         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2517               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2518               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2519               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2520               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2521               I40E_PFINT_ICR0_ENA_TIMESYNC_MASK      |
2522               I40E_PFINT_ICR0_ENA_STORM_DETECT_MASK  |
2523               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2524               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2525               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2526
2527         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2528
2529         /* SW_ITR_IDX = 0, but don't change INTENA */
2530         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2531                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2532
2533         /* OTHER_ITR_IDX = 0 */
2534         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2535 }
2536
2537 /**
2538  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2539  * @vsi: the VSI being configured
2540  **/
2541 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2542 {
2543         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2544         struct i40e_pf *pf = vsi->back;
2545         struct i40e_hw *hw = &pf->hw;
2546         u32 val;
2547
2548         /* set the ITR configuration */
2549         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2550         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2551         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2552         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2553         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2554         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2555
2556         i40e_enable_misc_int_causes(hw);
2557
2558         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2559         wr32(hw, I40E_PFINT_LNKLST0, 0);
2560
2561         /* Associate the queue pair to the vector and enable the q int */
2562         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2563               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2564               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2565
2566         wr32(hw, I40E_QINT_RQCTL(0), val);
2567
2568         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2569               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2570               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2571
2572         wr32(hw, I40E_QINT_TQCTL(0), val);
2573         i40e_flush(hw);
2574 }
2575
2576 /**
2577  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2578  * @pf: board private structure
2579  **/
2580 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2581 {
2582         struct i40e_hw *hw = &pf->hw;
2583
2584         wr32(hw, I40E_PFINT_DYN_CTL0,
2585              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2586         i40e_flush(hw);
2587 }
2588
2589 /**
2590  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2591  * @pf: board private structure
2592  **/
2593 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2594 {
2595         struct i40e_hw *hw = &pf->hw;
2596         u32 val;
2597
2598         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2599               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2600               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2601
2602         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2603         i40e_flush(hw);
2604 }
2605
2606 /**
2607  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2608  * @vsi: pointer to a vsi
2609  * @vector: enable a particular Hw Interrupt vector
2610  **/
2611 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2612 {
2613         struct i40e_pf *pf = vsi->back;
2614         struct i40e_hw *hw = &pf->hw;
2615         u32 val;
2616
2617         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2618               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2619               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2620         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2621         /* skip the flush */
2622 }
2623
2624 /**
2625  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2626  * @irq: interrupt number
2627  * @data: pointer to a q_vector
2628  **/
2629 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2630 {
2631         struct i40e_q_vector *q_vector = data;
2632
2633         if (!q_vector->tx.ring && !q_vector->rx.ring)
2634                 return IRQ_HANDLED;
2635
2636         napi_schedule(&q_vector->napi);
2637
2638         return IRQ_HANDLED;
2639 }
2640
2641 /**
2642  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2643  * @vsi: the VSI being configured
2644  * @basename: name for the vector
2645  *
2646  * Allocates MSI-X vectors and requests interrupts from the kernel.
2647  **/
2648 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2649 {
2650         int q_vectors = vsi->num_q_vectors;
2651         struct i40e_pf *pf = vsi->back;
2652         int base = vsi->base_vector;
2653         int rx_int_idx = 0;
2654         int tx_int_idx = 0;
2655         int vector, err;
2656
2657         for (vector = 0; vector < q_vectors; vector++) {
2658                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2659
2660                 if (q_vector->tx.ring && q_vector->rx.ring) {
2661                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2662                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2663                         tx_int_idx++;
2664                 } else if (q_vector->rx.ring) {
2665                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2666                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
2667                 } else if (q_vector->tx.ring) {
2668                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2669                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
2670                 } else {
2671                         /* skip this unused q_vector */
2672                         continue;
2673                 }
2674                 err = request_irq(pf->msix_entries[base + vector].vector,
2675                                   vsi->irq_handler,
2676                                   0,
2677                                   q_vector->name,
2678                                   q_vector);
2679                 if (err) {
2680                         dev_info(&pf->pdev->dev,
2681                                  "%s: request_irq failed, error: %d\n",
2682                                  __func__, err);
2683                         goto free_queue_irqs;
2684                 }
2685                 /* assign the mask for this irq */
2686                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2687                                       &q_vector->affinity_mask);
2688         }
2689
2690         return 0;
2691
2692 free_queue_irqs:
2693         while (vector) {
2694                 vector--;
2695                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2696                                       NULL);
2697                 free_irq(pf->msix_entries[base + vector].vector,
2698                          &(vsi->q_vectors[vector]));
2699         }
2700         return err;
2701 }
2702
2703 /**
2704  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
2705  * @vsi: the VSI being un-configured
2706  **/
2707 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
2708 {
2709         struct i40e_pf *pf = vsi->back;
2710         struct i40e_hw *hw = &pf->hw;
2711         int base = vsi->base_vector;
2712         int i;
2713
2714         for (i = 0; i < vsi->num_queue_pairs; i++) {
2715                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
2716                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
2717         }
2718
2719         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2720                 for (i = vsi->base_vector;
2721                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2722                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
2723
2724                 i40e_flush(hw);
2725                 for (i = 0; i < vsi->num_q_vectors; i++)
2726                         synchronize_irq(pf->msix_entries[i + base].vector);
2727         } else {
2728                 /* Legacy and MSI mode - this stops all interrupt handling */
2729                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
2730                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
2731                 i40e_flush(hw);
2732                 synchronize_irq(pf->pdev->irq);
2733         }
2734 }
2735
2736 /**
2737  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
2738  * @vsi: the VSI being configured
2739  **/
2740 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
2741 {
2742         struct i40e_pf *pf = vsi->back;
2743         int i;
2744
2745         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2746                 for (i = vsi->base_vector;
2747                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2748                         i40e_irq_dynamic_enable(vsi, i);
2749         } else {
2750                 i40e_irq_dynamic_enable_icr0(pf);
2751         }
2752
2753         i40e_flush(&pf->hw);
2754         return 0;
2755 }
2756
2757 /**
2758  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
2759  * @pf: board private structure
2760  **/
2761 static void i40e_stop_misc_vector(struct i40e_pf *pf)
2762 {
2763         /* Disable ICR 0 */
2764         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
2765         i40e_flush(&pf->hw);
2766 }
2767
2768 /**
2769  * i40e_intr - MSI/Legacy and non-queue interrupt handler
2770  * @irq: interrupt number
2771  * @data: pointer to a q_vector
2772  *
2773  * This is the handler used for all MSI/Legacy interrupts, and deals
2774  * with both queue and non-queue interrupts.  This is also used in
2775  * MSIX mode to handle the non-queue interrupts.
2776  **/
2777 static irqreturn_t i40e_intr(int irq, void *data)
2778 {
2779         struct i40e_pf *pf = (struct i40e_pf *)data;
2780         struct i40e_hw *hw = &pf->hw;
2781         irqreturn_t ret = IRQ_NONE;
2782         u32 icr0, icr0_remaining;
2783         u32 val, ena_mask;
2784
2785         icr0 = rd32(hw, I40E_PFINT_ICR0);
2786         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
2787
2788         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
2789         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
2790                 goto enable_intr;
2791
2792         /* if interrupt but no bits showing, must be SWINT */
2793         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
2794             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
2795                 pf->sw_int_count++;
2796
2797         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
2798         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
2799
2800                 /* temporarily disable queue cause for NAPI processing */
2801                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
2802                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
2803                 wr32(hw, I40E_QINT_RQCTL(0), qval);
2804
2805                 qval = rd32(hw, I40E_QINT_TQCTL(0));
2806                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
2807                 wr32(hw, I40E_QINT_TQCTL(0), qval);
2808
2809                 if (!test_bit(__I40E_DOWN, &pf->state))
2810                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
2811         }
2812
2813         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
2814                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2815                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
2816         }
2817
2818         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
2819                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
2820                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
2821         }
2822
2823         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
2824                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
2825                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
2826         }
2827
2828         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
2829                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
2830                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
2831                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
2832                 val = rd32(hw, I40E_GLGEN_RSTAT);
2833                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
2834                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
2835                 if (val == I40E_RESET_CORER)
2836                         pf->corer_count++;
2837                 else if (val == I40E_RESET_GLOBR)
2838                         pf->globr_count++;
2839                 else if (val == I40E_RESET_EMPR)
2840                         pf->empr_count++;
2841         }
2842
2843         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
2844                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
2845                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
2846         }
2847
2848         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
2849                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
2850
2851                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
2852                         ena_mask &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2853                         i40e_ptp_tx_hwtstamp(pf);
2854                         prttsyn_stat &= ~I40E_PRTTSYN_STAT_0_TXTIME_MASK;
2855                 }
2856
2857                 wr32(hw, I40E_PRTTSYN_STAT_0, prttsyn_stat);
2858         }
2859
2860         /* If a critical error is pending we have no choice but to reset the
2861          * device.
2862          * Report and mask out any remaining unexpected interrupts.
2863          */
2864         icr0_remaining = icr0 & ena_mask;
2865         if (icr0_remaining) {
2866                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
2867                          icr0_remaining);
2868                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
2869                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
2870                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK) ||
2871                     (icr0_remaining & I40E_PFINT_ICR0_MAL_DETECT_MASK)) {
2872                         dev_info(&pf->pdev->dev, "device will be reset\n");
2873                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2874                         i40e_service_event_schedule(pf);
2875                 }
2876                 ena_mask &= ~icr0_remaining;
2877         }
2878         ret = IRQ_HANDLED;
2879
2880 enable_intr:
2881         /* re-enable interrupt causes */
2882         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
2883         if (!test_bit(__I40E_DOWN, &pf->state)) {
2884                 i40e_service_event_schedule(pf);
2885                 i40e_irq_dynamic_enable_icr0(pf);
2886         }
2887
2888         return ret;
2889 }
2890
2891 /**
2892  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
2893  * @tx_ring:  tx ring to clean
2894  * @budget:   how many cleans we're allowed
2895  *
2896  * Returns true if there's any budget left (e.g. the clean is finished)
2897  **/
2898 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
2899 {
2900         struct i40e_vsi *vsi = tx_ring->vsi;
2901         u16 i = tx_ring->next_to_clean;
2902         struct i40e_tx_buffer *tx_buf;
2903         struct i40e_tx_desc *tx_desc;
2904
2905         tx_buf = &tx_ring->tx_bi[i];
2906         tx_desc = I40E_TX_DESC(tx_ring, i);
2907         i -= tx_ring->count;
2908
2909         do {
2910                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
2911
2912                 /* if next_to_watch is not set then there is no work pending */
2913                 if (!eop_desc)
2914                         break;
2915
2916                 /* prevent any other reads prior to eop_desc */
2917                 read_barrier_depends();
2918
2919                 /* if the descriptor isn't done, no work yet to do */
2920                 if (!(eop_desc->cmd_type_offset_bsz &
2921                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
2922                         break;
2923
2924                 /* clear next_to_watch to prevent false hangs */
2925                 tx_buf->next_to_watch = NULL;
2926
2927                 /* unmap skb header data */
2928                 dma_unmap_single(tx_ring->dev,
2929                                  dma_unmap_addr(tx_buf, dma),
2930                                  dma_unmap_len(tx_buf, len),
2931                                  DMA_TO_DEVICE);
2932
2933                 dma_unmap_len_set(tx_buf, len, 0);
2934
2935
2936                 /* move to the next desc and buffer to clean */
2937                 tx_buf++;
2938                 tx_desc++;
2939                 i++;
2940                 if (unlikely(!i)) {
2941                         i -= tx_ring->count;
2942                         tx_buf = tx_ring->tx_bi;
2943                         tx_desc = I40E_TX_DESC(tx_ring, 0);
2944                 }
2945
2946                 /* update budget accounting */
2947                 budget--;
2948         } while (likely(budget));
2949
2950         i += tx_ring->count;
2951         tx_ring->next_to_clean = i;
2952
2953         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
2954                 i40e_irq_dynamic_enable(vsi,
2955                                 tx_ring->q_vector->v_idx + vsi->base_vector);
2956         }
2957         return budget > 0;
2958 }
2959
2960 /**
2961  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
2962  * @irq: interrupt number
2963  * @data: pointer to a q_vector
2964  **/
2965 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
2966 {
2967         struct i40e_q_vector *q_vector = data;
2968         struct i40e_vsi *vsi;
2969
2970         if (!q_vector->tx.ring)
2971                 return IRQ_HANDLED;
2972
2973         vsi = q_vector->tx.ring->vsi;
2974         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
2975
2976         return IRQ_HANDLED;
2977 }
2978
2979 /**
2980  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
2981  * @vsi: the VSI being configured
2982  * @v_idx: vector index
2983  * @qp_idx: queue pair index
2984  **/
2985 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
2986 {
2987         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
2988         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
2989         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
2990
2991         tx_ring->q_vector = q_vector;
2992         tx_ring->next = q_vector->tx.ring;
2993         q_vector->tx.ring = tx_ring;
2994         q_vector->tx.count++;
2995
2996         rx_ring->q_vector = q_vector;
2997         rx_ring->next = q_vector->rx.ring;
2998         q_vector->rx.ring = rx_ring;
2999         q_vector->rx.count++;
3000 }
3001
3002 /**
3003  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3004  * @vsi: the VSI being configured
3005  *
3006  * This function maps descriptor rings to the queue-specific vectors
3007  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3008  * one vector per queue pair, but on a constrained vector budget, we
3009  * group the queue pairs as "efficiently" as possible.
3010  **/
3011 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3012 {
3013         int qp_remaining = vsi->num_queue_pairs;
3014         int q_vectors = vsi->num_q_vectors;
3015         int num_ringpairs;
3016         int v_start = 0;
3017         int qp_idx = 0;
3018
3019         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3020          * group them so there are multiple queues per vector.
3021          */
3022         for (; v_start < q_vectors && qp_remaining; v_start++) {
3023                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3024
3025                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3026
3027                 q_vector->num_ringpairs = num_ringpairs;
3028
3029                 q_vector->rx.count = 0;
3030                 q_vector->tx.count = 0;
3031                 q_vector->rx.ring = NULL;
3032                 q_vector->tx.ring = NULL;
3033
3034                 while (num_ringpairs--) {
3035                         map_vector_to_qp(vsi, v_start, qp_idx);
3036                         qp_idx++;
3037                         qp_remaining--;
3038                 }
3039         }
3040 }
3041
3042 /**
3043  * i40e_vsi_request_irq - Request IRQ from the OS
3044  * @vsi: the VSI being configured
3045  * @basename: name for the vector
3046  **/
3047 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3048 {
3049         struct i40e_pf *pf = vsi->back;
3050         int err;
3051
3052         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3053                 err = i40e_vsi_request_irq_msix(vsi, basename);
3054         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3055                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3056                                   pf->misc_int_name, pf);
3057         else
3058                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3059                                   pf->misc_int_name, pf);
3060
3061         if (err)
3062                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3063
3064         return err;
3065 }
3066
3067 #ifdef CONFIG_NET_POLL_CONTROLLER
3068 /**
3069  * i40e_netpoll - A Polling 'interrupt'handler
3070  * @netdev: network interface device structure
3071  *
3072  * This is used by netconsole to send skbs without having to re-enable
3073  * interrupts.  It's not called while the normal interrupt routine is executing.
3074  **/
3075 static void i40e_netpoll(struct net_device *netdev)
3076 {
3077         struct i40e_netdev_priv *np = netdev_priv(netdev);
3078         struct i40e_vsi *vsi = np->vsi;
3079         struct i40e_pf *pf = vsi->back;
3080         int i;
3081
3082         /* if interface is down do nothing */
3083         if (test_bit(__I40E_DOWN, &vsi->state))
3084                 return;
3085
3086         pf->flags |= I40E_FLAG_IN_NETPOLL;
3087         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3088                 for (i = 0; i < vsi->num_q_vectors; i++)
3089                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3090         } else {
3091                 i40e_intr(pf->pdev->irq, netdev);
3092         }
3093         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3094 }
3095 #endif
3096
3097 /**
3098  * i40e_vsi_control_tx - Start or stop a VSI's rings
3099  * @vsi: the VSI being configured
3100  * @enable: start or stop the rings
3101  **/
3102 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3103 {
3104         struct i40e_pf *pf = vsi->back;
3105         struct i40e_hw *hw = &pf->hw;
3106         int i, j, pf_q;
3107         u32 tx_reg;
3108
3109         pf_q = vsi->base_queue;
3110         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3111                 for (j = 0; j < 50; j++) {
3112                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3113                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3114                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3115                                 break;
3116                         usleep_range(1000, 2000);
3117                 }
3118                 /* Skip if the queue is already in the requested state */
3119                 if (enable && (tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3120                         continue;
3121                 if (!enable && !(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3122                         continue;
3123
3124                 /* turn on/off the queue */
3125                 if (enable) {
3126                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3127                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3128                 } else {
3129                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3130                 }
3131
3132                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3133
3134                 /* wait for the change to finish */
3135                 for (j = 0; j < 10; j++) {
3136                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3137                         if (enable) {
3138                                 if ((tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3139                                         break;
3140                         } else {
3141                                 if (!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3142                                         break;
3143                         }
3144
3145                         udelay(10);
3146                 }
3147                 if (j >= 10) {
3148                         dev_info(&pf->pdev->dev, "Tx ring %d %sable timeout\n",
3149                                  pf_q, (enable ? "en" : "dis"));
3150                         return -ETIMEDOUT;
3151                 }
3152         }
3153
3154         if (hw->revision_id == 0)
3155                 mdelay(50);
3156
3157         return 0;
3158 }
3159
3160 /**
3161  * i40e_vsi_control_rx - Start or stop a VSI's rings
3162  * @vsi: the VSI being configured
3163  * @enable: start or stop the rings
3164  **/
3165 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3166 {
3167         struct i40e_pf *pf = vsi->back;
3168         struct i40e_hw *hw = &pf->hw;
3169         int i, j, pf_q;
3170         u32 rx_reg;
3171
3172         pf_q = vsi->base_queue;
3173         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3174                 for (j = 0; j < 50; j++) {
3175                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3176                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3177                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3178                                 break;
3179                         usleep_range(1000, 2000);
3180                 }
3181
3182                 if (enable) {
3183                         /* is STAT set ? */
3184                         if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3185                                 continue;
3186                 } else {
3187                         /* is !STAT set ? */
3188                         if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3189                                 continue;
3190                 }
3191
3192                 /* turn on/off the queue */
3193                 if (enable)
3194                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3195                 else
3196                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3197                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3198
3199                 /* wait for the change to finish */
3200                 for (j = 0; j < 10; j++) {
3201                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3202
3203                         if (enable) {
3204                                 if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3205                                         break;
3206                         } else {
3207                                 if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3208                                         break;
3209                         }
3210
3211                         udelay(10);
3212                 }
3213                 if (j >= 10) {
3214                         dev_info(&pf->pdev->dev, "Rx ring %d %sable timeout\n",
3215                                  pf_q, (enable ? "en" : "dis"));
3216                         return -ETIMEDOUT;
3217                 }
3218         }
3219
3220         return 0;
3221 }
3222
3223 /**
3224  * i40e_vsi_control_rings - Start or stop a VSI's rings
3225  * @vsi: the VSI being configured
3226  * @enable: start or stop the rings
3227  **/
3228 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3229 {
3230         int ret = 0;
3231
3232         /* do rx first for enable and last for disable */
3233         if (request) {
3234                 ret = i40e_vsi_control_rx(vsi, request);
3235                 if (ret)
3236                         return ret;
3237                 ret = i40e_vsi_control_tx(vsi, request);
3238         } else {
3239                 /* Ignore return value, we need to shutdown whatever we can */
3240                 i40e_vsi_control_tx(vsi, request);
3241                 i40e_vsi_control_rx(vsi, request);
3242         }
3243
3244         return ret;
3245 }
3246
3247 /**
3248  * i40e_vsi_free_irq - Free the irq association with the OS
3249  * @vsi: the VSI being configured
3250  **/
3251 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3252 {
3253         struct i40e_pf *pf = vsi->back;
3254         struct i40e_hw *hw = &pf->hw;
3255         int base = vsi->base_vector;
3256         u32 val, qp;
3257         int i;
3258
3259         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3260                 if (!vsi->q_vectors)
3261                         return;
3262
3263                 for (i = 0; i < vsi->num_q_vectors; i++) {
3264                         u16 vector = i + base;
3265
3266                         /* free only the irqs that were actually requested */
3267                         if (!vsi->q_vectors[i] ||
3268                             !vsi->q_vectors[i]->num_ringpairs)
3269                                 continue;
3270
3271                         /* clear the affinity_mask in the IRQ descriptor */
3272                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3273                                               NULL);
3274                         free_irq(pf->msix_entries[vector].vector,
3275                                  vsi->q_vectors[i]);
3276
3277                         /* Tear down the interrupt queue link list
3278                          *
3279                          * We know that they come in pairs and always
3280                          * the Rx first, then the Tx.  To clear the
3281                          * link list, stick the EOL value into the
3282                          * next_q field of the registers.
3283                          */
3284                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3285                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3286                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3287                         val |= I40E_QUEUE_END_OF_LIST
3288                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3289                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3290
3291                         while (qp != I40E_QUEUE_END_OF_LIST) {
3292                                 u32 next;
3293
3294                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3295
3296                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3297                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3298                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3299                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3300
3301                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3302                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3303
3304                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3305
3306                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3307
3308                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3309                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3310
3311                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3312                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3313                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3314                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3315
3316                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3317                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3318
3319                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3320                                 qp = next;
3321                         }
3322                 }
3323         } else {
3324                 free_irq(pf->pdev->irq, pf);
3325
3326                 val = rd32(hw, I40E_PFINT_LNKLST0);
3327                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3328                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3329                 val |= I40E_QUEUE_END_OF_LIST
3330                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3331                 wr32(hw, I40E_PFINT_LNKLST0, val);
3332
3333                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3334                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3335                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3336                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3337                          I40E_QINT_RQCTL_INTEVENT_MASK);
3338
3339                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3340                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3341
3342                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3343
3344                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3345
3346                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3347                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3348                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3349                          I40E_QINT_TQCTL_INTEVENT_MASK);
3350
3351                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3352                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3353
3354                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3355         }
3356 }
3357
3358 /**
3359  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3360  * @vsi: the VSI being configured
3361  * @v_idx: Index of vector to be freed
3362  *
3363  * This function frees the memory allocated to the q_vector.  In addition if
3364  * NAPI is enabled it will delete any references to the NAPI struct prior
3365  * to freeing the q_vector.
3366  **/
3367 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3368 {
3369         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3370         struct i40e_ring *ring;
3371
3372         if (!q_vector)
3373                 return;
3374
3375         /* disassociate q_vector from rings */
3376         i40e_for_each_ring(ring, q_vector->tx)
3377                 ring->q_vector = NULL;
3378
3379         i40e_for_each_ring(ring, q_vector->rx)
3380                 ring->q_vector = NULL;
3381
3382         /* only VSI w/ an associated netdev is set up w/ NAPI */
3383         if (vsi->netdev)
3384                 netif_napi_del(&q_vector->napi);
3385
3386         vsi->q_vectors[v_idx] = NULL;
3387
3388         kfree_rcu(q_vector, rcu);
3389 }
3390
3391 /**
3392  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3393  * @vsi: the VSI being un-configured
3394  *
3395  * This frees the memory allocated to the q_vectors and
3396  * deletes references to the NAPI struct.
3397  **/
3398 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3399 {
3400         int v_idx;
3401
3402         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3403                 i40e_free_q_vector(vsi, v_idx);
3404 }
3405
3406 /**
3407  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3408  * @pf: board private structure
3409  **/
3410 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3411 {
3412         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3413         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3414                 pci_disable_msix(pf->pdev);
3415                 kfree(pf->msix_entries);
3416                 pf->msix_entries = NULL;
3417         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3418                 pci_disable_msi(pf->pdev);
3419         }
3420         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3421 }
3422
3423 /**
3424  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3425  * @pf: board private structure
3426  *
3427  * We go through and clear interrupt specific resources and reset the structure
3428  * to pre-load conditions
3429  **/
3430 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3431 {
3432         int i;
3433
3434         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3435         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
3436                 if (pf->vsi[i])
3437                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3438         i40e_reset_interrupt_capability(pf);
3439 }
3440
3441 /**
3442  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3443  * @vsi: the VSI being configured
3444  **/
3445 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3446 {
3447         int q_idx;
3448
3449         if (!vsi->netdev)
3450                 return;
3451
3452         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3453                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3454 }
3455
3456 /**
3457  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3458  * @vsi: the VSI being configured
3459  **/
3460 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3461 {
3462         int q_idx;
3463
3464         if (!vsi->netdev)
3465                 return;
3466
3467         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3468                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3469 }
3470
3471 /**
3472  * i40e_quiesce_vsi - Pause a given VSI
3473  * @vsi: the VSI being paused
3474  **/
3475 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3476 {
3477         if (test_bit(__I40E_DOWN, &vsi->state))
3478                 return;
3479
3480         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3481         if (vsi->netdev && netif_running(vsi->netdev)) {
3482                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3483         } else {
3484                 set_bit(__I40E_DOWN, &vsi->state);
3485                 i40e_down(vsi);
3486         }
3487 }
3488
3489 /**
3490  * i40e_unquiesce_vsi - Resume a given VSI
3491  * @vsi: the VSI being resumed
3492  **/
3493 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3494 {
3495         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3496                 return;
3497
3498         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3499         if (vsi->netdev && netif_running(vsi->netdev))
3500                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3501         else
3502                 i40e_up(vsi);   /* this clears the DOWN bit */
3503 }
3504
3505 /**
3506  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3507  * @pf: the PF
3508  **/
3509 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3510 {
3511         int v;
3512
3513         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3514                 if (pf->vsi[v])
3515                         i40e_quiesce_vsi(pf->vsi[v]);
3516         }
3517 }
3518
3519 /**
3520  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3521  * @pf: the PF
3522  **/
3523 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3524 {
3525         int v;
3526
3527         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3528                 if (pf->vsi[v])
3529                         i40e_unquiesce_vsi(pf->vsi[v]);
3530         }
3531 }
3532
3533 /**
3534  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
3535  * @dcbcfg: the corresponding DCBx configuration structure
3536  *
3537  * Return the number of TCs from given DCBx configuration
3538  **/
3539 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
3540 {
3541         u8 num_tc = 0;
3542         int i;
3543
3544         /* Scan the ETS Config Priority Table to find
3545          * traffic class enabled for a given priority
3546          * and use the traffic class index to get the
3547          * number of traffic classes enabled
3548          */
3549         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3550                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
3551                         num_tc = dcbcfg->etscfg.prioritytable[i];
3552         }
3553
3554         /* Traffic class index starts from zero so
3555          * increment to return the actual count
3556          */
3557         return num_tc + 1;
3558 }
3559
3560 /**
3561  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
3562  * @dcbcfg: the corresponding DCBx configuration structure
3563  *
3564  * Query the current DCB configuration and return the number of
3565  * traffic classes enabled from the given DCBX config
3566  **/
3567 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
3568 {
3569         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
3570         u8 enabled_tc = 1;
3571         u8 i;
3572
3573         for (i = 0; i < num_tc; i++)
3574                 enabled_tc |= 1 << i;
3575
3576         return enabled_tc;
3577 }
3578
3579 /**
3580  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
3581  * @pf: PF being queried
3582  *
3583  * Return number of traffic classes enabled for the given PF
3584  **/
3585 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
3586 {
3587         struct i40e_hw *hw = &pf->hw;
3588         u8 i, enabled_tc;
3589         u8 num_tc = 0;
3590         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3591
3592         /* If DCB is not enabled then always in single TC */
3593         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3594                 return 1;
3595
3596         /* MFP mode return count of enabled TCs for this PF */
3597         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3598                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3599                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3600                         if (enabled_tc & (1 << i))
3601                                 num_tc++;
3602                 }
3603                 return num_tc;
3604         }
3605
3606         /* SFP mode will be enabled for all TCs on port */
3607         return i40e_dcb_get_num_tc(dcbcfg);
3608 }
3609
3610 /**
3611  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
3612  * @pf: PF being queried
3613  *
3614  * Return a bitmap for first enabled traffic class for this PF.
3615  **/
3616 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
3617 {
3618         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3619         u8 i = 0;
3620
3621         if (!enabled_tc)
3622                 return 0x1; /* TC0 */
3623
3624         /* Find the first enabled TC */
3625         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3626                 if (enabled_tc & (1 << i))
3627                         break;
3628         }
3629
3630         return 1 << i;
3631 }
3632
3633 /**
3634  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
3635  * @pf: PF being queried
3636  *
3637  * Return a bitmap for enabled traffic classes for this PF.
3638  **/
3639 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
3640 {
3641         /* If DCB is not enabled for this PF then just return default TC */
3642         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3643                 return i40e_pf_get_default_tc(pf);
3644
3645         /* MFP mode will have enabled TCs set by FW */
3646         if (pf->flags & I40E_FLAG_MFP_ENABLED)
3647                 return pf->hw.func_caps.enabled_tcmap;
3648
3649         /* SFP mode we want PF to be enabled for all TCs */
3650         return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
3651 }
3652
3653 /**
3654  * i40e_vsi_get_bw_info - Query VSI BW Information
3655  * @vsi: the VSI being queried
3656  *
3657  * Returns 0 on success, negative value on failure
3658  **/
3659 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
3660 {
3661         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
3662         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
3663         struct i40e_pf *pf = vsi->back;
3664         struct i40e_hw *hw = &pf->hw;
3665         i40e_status aq_ret;
3666         u32 tc_bw_max;
3667         int i;
3668
3669         /* Get the VSI level BW configuration */
3670         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
3671         if (aq_ret) {
3672                 dev_info(&pf->pdev->dev,
3673                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
3674                          aq_ret, pf->hw.aq.asq_last_status);
3675                 return -EINVAL;
3676         }
3677
3678         /* Get the VSI level BW configuration per TC */
3679         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
3680                                                   NULL);
3681         if (aq_ret) {
3682                 dev_info(&pf->pdev->dev,
3683                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
3684                          aq_ret, pf->hw.aq.asq_last_status);
3685                 return -EINVAL;
3686         }
3687
3688         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
3689                 dev_info(&pf->pdev->dev,
3690                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
3691                          bw_config.tc_valid_bits,
3692                          bw_ets_config.tc_valid_bits);
3693                 /* Still continuing */
3694         }
3695
3696         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
3697         vsi->bw_max_quanta = bw_config.max_bw;
3698         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
3699                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
3700         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3701                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
3702                 vsi->bw_ets_limit_credits[i] =
3703                                         le16_to_cpu(bw_ets_config.credits[i]);
3704                 /* 3 bits out of 4 for each TC */
3705                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
3706         }
3707
3708         return 0;
3709 }
3710
3711 /**
3712  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
3713  * @vsi: the VSI being configured
3714  * @enabled_tc: TC bitmap
3715  * @bw_credits: BW shared credits per TC
3716  *
3717  * Returns 0 on success, negative value on failure
3718  **/
3719 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
3720                                        u8 *bw_share)
3721 {
3722         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
3723         i40e_status aq_ret;
3724         int i;
3725
3726         bw_data.tc_valid_bits = enabled_tc;
3727         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3728                 bw_data.tc_bw_credits[i] = bw_share[i];
3729
3730         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
3731                                           NULL);
3732         if (aq_ret) {
3733                 dev_info(&vsi->back->pdev->dev,
3734                          "%s: AQ command Config VSI BW allocation per TC failed = %d\n",
3735                          __func__, vsi->back->hw.aq.asq_last_status);
3736                 return -EINVAL;
3737         }
3738
3739         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3740                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
3741
3742         return 0;
3743 }
3744
3745 /**
3746  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
3747  * @vsi: the VSI being configured
3748  * @enabled_tc: TC map to be enabled
3749  *
3750  **/
3751 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3752 {
3753         struct net_device *netdev = vsi->netdev;
3754         struct i40e_pf *pf = vsi->back;
3755         struct i40e_hw *hw = &pf->hw;
3756         u8 netdev_tc = 0;
3757         int i;
3758         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3759
3760         if (!netdev)
3761                 return;
3762
3763         if (!enabled_tc) {
3764                 netdev_reset_tc(netdev);
3765                 return;
3766         }
3767
3768         /* Set up actual enabled TCs on the VSI */
3769         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
3770                 return;
3771
3772         /* set per TC queues for the VSI */
3773         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3774                 /* Only set TC queues for enabled tcs
3775                  *
3776                  * e.g. For a VSI that has TC0 and TC3 enabled the
3777                  * enabled_tc bitmap would be 0x00001001; the driver
3778                  * will set the numtc for netdev as 2 that will be
3779                  * referenced by the netdev layer as TC 0 and 1.
3780                  */
3781                 if (vsi->tc_config.enabled_tc & (1 << i))
3782                         netdev_set_tc_queue(netdev,
3783                                         vsi->tc_config.tc_info[i].netdev_tc,
3784                                         vsi->tc_config.tc_info[i].qcount,
3785                                         vsi->tc_config.tc_info[i].qoffset);
3786         }
3787
3788         /* Assign UP2TC map for the VSI */
3789         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3790                 /* Get the actual TC# for the UP */
3791                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
3792                 /* Get the mapped netdev TC# for the UP */
3793                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
3794                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
3795         }
3796 }
3797
3798 /**
3799  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
3800  * @vsi: the VSI being configured
3801  * @ctxt: the ctxt buffer returned from AQ VSI update param command
3802  **/
3803 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
3804                                       struct i40e_vsi_context *ctxt)
3805 {
3806         /* copy just the sections touched not the entire info
3807          * since not all sections are valid as returned by
3808          * update vsi params
3809          */
3810         vsi->info.mapping_flags = ctxt->info.mapping_flags;
3811         memcpy(&vsi->info.queue_mapping,
3812                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
3813         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
3814                sizeof(vsi->info.tc_mapping));
3815 }
3816
3817 /**
3818  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
3819  * @vsi: VSI to be configured
3820  * @enabled_tc: TC bitmap
3821  *
3822  * This configures a particular VSI for TCs that are mapped to the
3823  * given TC bitmap. It uses default bandwidth share for TCs across
3824  * VSIs to configure TC for a particular VSI.
3825  *
3826  * NOTE:
3827  * It is expected that the VSI queues have been quisced before calling
3828  * this function.
3829  **/
3830 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3831 {
3832         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
3833         struct i40e_vsi_context ctxt;
3834         int ret = 0;
3835         int i;
3836
3837         /* Check if enabled_tc is same as existing or new TCs */
3838         if (vsi->tc_config.enabled_tc == enabled_tc)
3839                 return ret;
3840
3841         /* Enable ETS TCs with equal BW Share for now across all VSIs */
3842         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3843                 if (enabled_tc & (1 << i))
3844                         bw_share[i] = 1;
3845         }
3846
3847         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
3848         if (ret) {
3849                 dev_info(&vsi->back->pdev->dev,
3850                          "Failed configuring TC map %d for VSI %d\n",
3851                          enabled_tc, vsi->seid);
3852                 goto out;
3853         }
3854
3855         /* Update Queue Pairs Mapping for currently enabled UPs */
3856         ctxt.seid = vsi->seid;
3857         ctxt.pf_num = vsi->back->hw.pf_id;
3858         ctxt.vf_num = 0;
3859         ctxt.uplink_seid = vsi->uplink_seid;
3860         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
3861         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
3862
3863         /* Update the VSI after updating the VSI queue-mapping information */
3864         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
3865         if (ret) {
3866                 dev_info(&vsi->back->pdev->dev,
3867                          "update vsi failed, aq_err=%d\n",
3868                          vsi->back->hw.aq.asq_last_status);
3869                 goto out;
3870         }
3871         /* update the local VSI info with updated queue map */
3872         i40e_vsi_update_queue_map(vsi, &ctxt);
3873         vsi->info.valid_sections = 0;
3874
3875         /* Update current VSI BW information */
3876         ret = i40e_vsi_get_bw_info(vsi);
3877         if (ret) {
3878                 dev_info(&vsi->back->pdev->dev,
3879                          "Failed updating vsi bw info, aq_err=%d\n",
3880                          vsi->back->hw.aq.asq_last_status);
3881                 goto out;
3882         }
3883
3884         /* Update the netdev TC setup */
3885         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
3886 out:
3887         return ret;
3888 }
3889
3890 /**
3891  * i40e_veb_config_tc - Configure TCs for given VEB
3892  * @veb: given VEB
3893  * @enabled_tc: TC bitmap
3894  *
3895  * Configures given TC bitmap for VEB (switching) element
3896  **/
3897 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
3898 {
3899         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
3900         struct i40e_pf *pf = veb->pf;
3901         int ret = 0;
3902         int i;
3903
3904         /* No TCs or already enabled TCs just return */
3905         if (!enabled_tc || veb->enabled_tc == enabled_tc)
3906                 return ret;
3907
3908         bw_data.tc_valid_bits = enabled_tc;
3909         /* bw_data.absolute_credits is not set (relative) */
3910
3911         /* Enable ETS TCs with equal BW Share for now */
3912         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3913                 if (enabled_tc & (1 << i))
3914                         bw_data.tc_bw_share_credits[i] = 1;
3915         }
3916
3917         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
3918                                                    &bw_data, NULL);
3919         if (ret) {
3920                 dev_info(&pf->pdev->dev,
3921                          "veb bw config failed, aq_err=%d\n",
3922                          pf->hw.aq.asq_last_status);
3923                 goto out;
3924         }
3925
3926         /* Update the BW information */
3927         ret = i40e_veb_get_bw_info(veb);
3928         if (ret) {
3929                 dev_info(&pf->pdev->dev,
3930                          "Failed getting veb bw config, aq_err=%d\n",
3931                          pf->hw.aq.asq_last_status);
3932         }
3933
3934 out:
3935         return ret;
3936 }
3937
3938 #ifdef CONFIG_I40E_DCB
3939 /**
3940  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
3941  * @pf: PF struct
3942  *
3943  * Reconfigure VEB/VSIs on a given PF; it is assumed that
3944  * the caller would've quiesce all the VSIs before calling
3945  * this function
3946  **/
3947 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
3948 {
3949         u8 tc_map = 0;
3950         int ret;
3951         u8 v;
3952
3953         /* Enable the TCs available on PF to all VEBs */
3954         tc_map = i40e_pf_get_tc_map(pf);
3955         for (v = 0; v < I40E_MAX_VEB; v++) {
3956                 if (!pf->veb[v])
3957                         continue;
3958                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
3959                 if (ret) {
3960                         dev_info(&pf->pdev->dev,
3961                                  "Failed configuring TC for VEB seid=%d\n",
3962                                  pf->veb[v]->seid);
3963                         /* Will try to configure as many components */
3964                 }
3965         }
3966
3967         /* Update each VSI */
3968         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3969                 if (!pf->vsi[v])
3970                         continue;
3971
3972                 /* - Enable all TCs for the LAN VSI
3973                  * - For all others keep them at TC0 for now
3974                  */
3975                 if (v == pf->lan_vsi)
3976                         tc_map = i40e_pf_get_tc_map(pf);
3977                 else
3978                         tc_map = i40e_pf_get_default_tc(pf);
3979
3980                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
3981                 if (ret) {
3982                         dev_info(&pf->pdev->dev,
3983                                  "Failed configuring TC for VSI seid=%d\n",
3984                                  pf->vsi[v]->seid);
3985                         /* Will try to configure as many components */
3986                 } else {
3987                         if (pf->vsi[v]->netdev)
3988                                 i40e_dcbnl_set_all(pf->vsi[v]);
3989                 }
3990         }
3991 }
3992
3993 /**
3994  * i40e_init_pf_dcb - Initialize DCB configuration
3995  * @pf: PF being configured
3996  *
3997  * Query the current DCB configuration and cache it
3998  * in the hardware structure
3999  **/
4000 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4001 {
4002         struct i40e_hw *hw = &pf->hw;
4003         int err = 0;
4004
4005         if (pf->hw.func_caps.npar_enable)
4006                 goto out;
4007
4008         /* Get the initial DCB configuration */
4009         err = i40e_init_dcb(hw);
4010         if (!err) {
4011                 /* Device/Function is not DCBX capable */
4012                 if ((!hw->func_caps.dcb) ||
4013                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4014                         dev_info(&pf->pdev->dev,
4015                                  "DCBX offload is not supported or is disabled for this PF.\n");
4016
4017                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4018                                 goto out;
4019
4020                 } else {
4021                         /* When status is not DISABLED then DCBX in FW */
4022                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4023                                        DCB_CAP_DCBX_VER_IEEE;
4024                         pf->flags |= I40E_FLAG_DCB_ENABLED;
4025                 }
4026         }
4027
4028 out:
4029         return err;
4030 }
4031 #endif /* CONFIG_I40E_DCB */
4032
4033 /**
4034  * i40e_up_complete - Finish the last steps of bringing up a connection
4035  * @vsi: the VSI being configured
4036  **/
4037 static int i40e_up_complete(struct i40e_vsi *vsi)
4038 {
4039         struct i40e_pf *pf = vsi->back;
4040         int err;
4041
4042         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4043                 i40e_vsi_configure_msix(vsi);
4044         else
4045                 i40e_configure_msi_and_legacy(vsi);
4046
4047         /* start rings */
4048         err = i40e_vsi_control_rings(vsi, true);
4049         if (err)
4050                 return err;
4051
4052         clear_bit(__I40E_DOWN, &vsi->state);
4053         i40e_napi_enable_all(vsi);
4054         i40e_vsi_enable_irq(vsi);
4055
4056         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4057             (vsi->netdev)) {
4058                 netdev_info(vsi->netdev, "NIC Link is Up\n");
4059                 netif_tx_start_all_queues(vsi->netdev);
4060                 netif_carrier_on(vsi->netdev);
4061         } else if (vsi->netdev) {
4062                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4063         }
4064         i40e_service_event_schedule(pf);
4065
4066         return 0;
4067 }
4068
4069 /**
4070  * i40e_vsi_reinit_locked - Reset the VSI
4071  * @vsi: the VSI being configured
4072  *
4073  * Rebuild the ring structs after some configuration
4074  * has changed, e.g. MTU size.
4075  **/
4076 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4077 {
4078         struct i40e_pf *pf = vsi->back;
4079
4080         WARN_ON(in_interrupt());
4081         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4082                 usleep_range(1000, 2000);
4083         i40e_down(vsi);
4084
4085         /* Give a VF some time to respond to the reset.  The
4086          * two second wait is based upon the watchdog cycle in
4087          * the VF driver.
4088          */
4089         if (vsi->type == I40E_VSI_SRIOV)
4090                 msleep(2000);
4091         i40e_up(vsi);
4092         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4093 }
4094
4095 /**
4096  * i40e_up - Bring the connection back up after being down
4097  * @vsi: the VSI being configured
4098  **/
4099 int i40e_up(struct i40e_vsi *vsi)
4100 {
4101         int err;
4102
4103         err = i40e_vsi_configure(vsi);
4104         if (!err)
4105                 err = i40e_up_complete(vsi);
4106
4107         return err;
4108 }
4109
4110 /**
4111  * i40e_down - Shutdown the connection processing
4112  * @vsi: the VSI being stopped
4113  **/
4114 void i40e_down(struct i40e_vsi *vsi)
4115 {
4116         int i;
4117
4118         /* It is assumed that the caller of this function
4119          * sets the vsi->state __I40E_DOWN bit.
4120          */
4121         if (vsi->netdev) {
4122                 netif_carrier_off(vsi->netdev);
4123                 netif_tx_disable(vsi->netdev);
4124         }
4125         i40e_vsi_disable_irq(vsi);
4126         i40e_vsi_control_rings(vsi, false);
4127         i40e_napi_disable_all(vsi);
4128
4129         for (i = 0; i < vsi->num_queue_pairs; i++) {
4130                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4131                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4132         }
4133 }
4134
4135 /**
4136  * i40e_setup_tc - configure multiple traffic classes
4137  * @netdev: net device to configure
4138  * @tc: number of traffic classes to enable
4139  **/
4140 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4141 {
4142         struct i40e_netdev_priv *np = netdev_priv(netdev);
4143         struct i40e_vsi *vsi = np->vsi;
4144         struct i40e_pf *pf = vsi->back;
4145         u8 enabled_tc = 0;
4146         int ret = -EINVAL;
4147         int i;
4148
4149         /* Check if DCB enabled to continue */
4150         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4151                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4152                 goto exit;
4153         }
4154
4155         /* Check if MFP enabled */
4156         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4157                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4158                 goto exit;
4159         }
4160
4161         /* Check whether tc count is within enabled limit */
4162         if (tc > i40e_pf_get_num_tc(pf)) {
4163                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4164                 goto exit;
4165         }
4166
4167         /* Generate TC map for number of tc requested */
4168         for (i = 0; i < tc; i++)
4169                 enabled_tc |= (1 << i);
4170
4171         /* Requesting same TC configuration as already enabled */
4172         if (enabled_tc == vsi->tc_config.enabled_tc)
4173                 return 0;
4174
4175         /* Quiesce VSI queues */
4176         i40e_quiesce_vsi(vsi);
4177
4178         /* Configure VSI for enabled TCs */
4179         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4180         if (ret) {
4181                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4182                             vsi->seid);
4183                 goto exit;
4184         }
4185
4186         /* Unquiesce VSI */
4187         i40e_unquiesce_vsi(vsi);
4188
4189 exit:
4190         return ret;
4191 }
4192
4193 /**
4194  * i40e_open - Called when a network interface is made active
4195  * @netdev: network interface device structure
4196  *
4197  * The open entry point is called when a network interface is made
4198  * active by the system (IFF_UP).  At this point all resources needed
4199  * for transmit and receive operations are allocated, the interrupt
4200  * handler is registered with the OS, the netdev watchdog subtask is
4201  * enabled, and the stack is notified that the interface is ready.
4202  *
4203  * Returns 0 on success, negative value on failure
4204  **/
4205 static int i40e_open(struct net_device *netdev)
4206 {
4207         struct i40e_netdev_priv *np = netdev_priv(netdev);
4208         struct i40e_vsi *vsi = np->vsi;
4209         struct i40e_pf *pf = vsi->back;
4210         char int_name[IFNAMSIZ];
4211         int err;
4212
4213         /* disallow open during test */
4214         if (test_bit(__I40E_TESTING, &pf->state))
4215                 return -EBUSY;
4216
4217         netif_carrier_off(netdev);
4218
4219         /* allocate descriptors */
4220         err = i40e_vsi_setup_tx_resources(vsi);
4221         if (err)
4222                 goto err_setup_tx;
4223         err = i40e_vsi_setup_rx_resources(vsi);
4224         if (err)
4225                 goto err_setup_rx;
4226
4227         err = i40e_vsi_configure(vsi);
4228         if (err)
4229                 goto err_setup_rx;
4230
4231         snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4232                  dev_driver_string(&pf->pdev->dev), netdev->name);
4233         err = i40e_vsi_request_irq(vsi, int_name);
4234         if (err)
4235                 goto err_setup_rx;
4236
4237         /* Notify the stack of the actual queue counts. */
4238         err = netif_set_real_num_tx_queues(netdev, vsi->num_queue_pairs);
4239         if (err)
4240                 goto err_set_queues;
4241
4242         err = netif_set_real_num_rx_queues(netdev, vsi->num_queue_pairs);
4243         if (err)
4244                 goto err_set_queues;
4245
4246         err = i40e_up_complete(vsi);
4247         if (err)
4248                 goto err_up_complete;
4249
4250 #ifdef CONFIG_I40E_VXLAN
4251         vxlan_get_rx_port(netdev);
4252 #endif
4253
4254         return 0;
4255
4256 err_up_complete:
4257         i40e_down(vsi);
4258 err_set_queues:
4259         i40e_vsi_free_irq(vsi);
4260 err_setup_rx:
4261         i40e_vsi_free_rx_resources(vsi);
4262 err_setup_tx:
4263         i40e_vsi_free_tx_resources(vsi);
4264         if (vsi == pf->vsi[pf->lan_vsi])
4265                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4266
4267         return err;
4268 }
4269
4270 /**
4271  * i40e_close - Disables a network interface
4272  * @netdev: network interface device structure
4273  *
4274  * The close entry point is called when an interface is de-activated
4275  * by the OS.  The hardware is still under the driver's control, but
4276  * this netdev interface is disabled.
4277  *
4278  * Returns 0, this is not allowed to fail
4279  **/
4280 static int i40e_close(struct net_device *netdev)
4281 {
4282         struct i40e_netdev_priv *np = netdev_priv(netdev);
4283         struct i40e_vsi *vsi = np->vsi;
4284
4285         if (test_and_set_bit(__I40E_DOWN, &vsi->state))
4286                 return 0;
4287
4288         i40e_down(vsi);
4289         i40e_vsi_free_irq(vsi);
4290
4291         i40e_vsi_free_tx_resources(vsi);
4292         i40e_vsi_free_rx_resources(vsi);
4293
4294         return 0;
4295 }
4296
4297 /**
4298  * i40e_do_reset - Start a PF or Core Reset sequence
4299  * @pf: board private structure
4300  * @reset_flags: which reset is requested
4301  *
4302  * The essential difference in resets is that the PF Reset
4303  * doesn't clear the packet buffers, doesn't reset the PE
4304  * firmware, and doesn't bother the other PFs on the chip.
4305  **/
4306 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
4307 {
4308         u32 val;
4309
4310         WARN_ON(in_interrupt());
4311
4312         /* do the biggest reset indicated */
4313         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
4314
4315                 /* Request a Global Reset
4316                  *
4317                  * This will start the chip's countdown to the actual full
4318                  * chip reset event, and a warning interrupt to be sent
4319                  * to all PFs, including the requestor.  Our handler
4320                  * for the warning interrupt will deal with the shutdown
4321                  * and recovery of the switch setup.
4322                  */
4323                 dev_info(&pf->pdev->dev, "GlobalR requested\n");
4324                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4325                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
4326                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4327
4328         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
4329
4330                 /* Request a Core Reset
4331                  *
4332                  * Same as Global Reset, except does *not* include the MAC/PHY
4333                  */
4334                 dev_info(&pf->pdev->dev, "CoreR requested\n");
4335                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4336                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
4337                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4338                 i40e_flush(&pf->hw);
4339
4340         } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
4341
4342                 /* Request a Firmware Reset
4343                  *
4344                  * Same as Global reset, plus restarting the
4345                  * embedded firmware engine.
4346                  */
4347                 /* enable EMP Reset */
4348                 val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
4349                 val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
4350                 wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
4351
4352                 /* force the reset */
4353                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4354                 val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
4355                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4356                 i40e_flush(&pf->hw);
4357
4358         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
4359
4360                 /* Request a PF Reset
4361                  *
4362                  * Resets only the PF-specific registers
4363                  *
4364                  * This goes directly to the tear-down and rebuild of
4365                  * the switch, since we need to do all the recovery as
4366                  * for the Core Reset.
4367                  */
4368                 dev_info(&pf->pdev->dev, "PFR requested\n");
4369                 i40e_handle_reset_warning(pf);
4370
4371         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
4372                 int v;
4373
4374                 /* Find the VSI(s) that requested a re-init */
4375                 dev_info(&pf->pdev->dev,
4376                          "VSI reinit requested\n");
4377                 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4378                         struct i40e_vsi *vsi = pf->vsi[v];
4379                         if (vsi != NULL &&
4380                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
4381                                 i40e_vsi_reinit_locked(pf->vsi[v]);
4382                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
4383                         }
4384                 }
4385
4386                 /* no further action needed, so return now */
4387                 return;
4388         } else {
4389                 dev_info(&pf->pdev->dev,
4390                          "bad reset request 0x%08x\n", reset_flags);
4391                 return;
4392         }
4393 }
4394
4395 #ifdef CONFIG_I40E_DCB
4396 /**
4397  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
4398  * @pf: board private structure
4399  * @old_cfg: current DCB config
4400  * @new_cfg: new DCB config
4401  **/
4402 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
4403                             struct i40e_dcbx_config *old_cfg,
4404                             struct i40e_dcbx_config *new_cfg)
4405 {
4406         bool need_reconfig = false;
4407
4408         /* Check if ETS configuration has changed */
4409         if (memcmp(&new_cfg->etscfg,
4410                    &old_cfg->etscfg,
4411                    sizeof(new_cfg->etscfg))) {
4412                 /* If Priority Table has changed reconfig is needed */
4413                 if (memcmp(&new_cfg->etscfg.prioritytable,
4414                            &old_cfg->etscfg.prioritytable,
4415                            sizeof(new_cfg->etscfg.prioritytable))) {
4416                         need_reconfig = true;
4417                         dev_info(&pf->pdev->dev, "ETS UP2TC changed.\n");
4418                 }
4419
4420                 if (memcmp(&new_cfg->etscfg.tcbwtable,
4421                            &old_cfg->etscfg.tcbwtable,
4422                            sizeof(new_cfg->etscfg.tcbwtable)))
4423                         dev_info(&pf->pdev->dev, "ETS TC BW Table changed.\n");
4424
4425                 if (memcmp(&new_cfg->etscfg.tsatable,
4426                            &old_cfg->etscfg.tsatable,
4427                            sizeof(new_cfg->etscfg.tsatable)))
4428                         dev_info(&pf->pdev->dev, "ETS TSA Table changed.\n");
4429         }
4430
4431         /* Check if PFC configuration has changed */
4432         if (memcmp(&new_cfg->pfc,
4433                    &old_cfg->pfc,
4434                    sizeof(new_cfg->pfc))) {
4435                 need_reconfig = true;
4436                 dev_info(&pf->pdev->dev, "PFC config change detected.\n");
4437         }
4438
4439         /* Check if APP Table has changed */
4440         if (memcmp(&new_cfg->app,
4441                    &old_cfg->app,
4442                    sizeof(new_cfg->app))) {
4443                 need_reconfig = true;
4444                 dev_info(&pf->pdev->dev, "APP Table change detected.\n");
4445         }
4446
4447         return need_reconfig;
4448 }
4449
4450 /**
4451  * i40e_handle_lldp_event - Handle LLDP Change MIB event
4452  * @pf: board private structure
4453  * @e: event info posted on ARQ
4454  **/
4455 static int i40e_handle_lldp_event(struct i40e_pf *pf,
4456                                   struct i40e_arq_event_info *e)
4457 {
4458         struct i40e_aqc_lldp_get_mib *mib =
4459                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
4460         struct i40e_hw *hw = &pf->hw;
4461         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
4462         struct i40e_dcbx_config tmp_dcbx_cfg;
4463         bool need_reconfig = false;
4464         int ret = 0;
4465         u8 type;
4466
4467         /* Ignore if event is not for Nearest Bridge */
4468         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
4469                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
4470         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
4471                 return ret;
4472
4473         /* Check MIB Type and return if event for Remote MIB update */
4474         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
4475         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
4476                 /* Update the remote cached instance and return */
4477                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
4478                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
4479                                 &hw->remote_dcbx_config);
4480                 goto exit;
4481         }
4482
4483         /* Convert/store the DCBX data from LLDPDU temporarily */
4484         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
4485         ret = i40e_lldp_to_dcb_config(e->msg_buf, &tmp_dcbx_cfg);
4486         if (ret) {
4487                 /* Error in LLDPDU parsing return */
4488                 dev_info(&pf->pdev->dev, "Failed parsing LLDPDU from event buffer\n");
4489                 goto exit;
4490         }
4491
4492         /* No change detected in DCBX configs */
4493         if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
4494                 dev_info(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
4495                 goto exit;
4496         }
4497
4498         need_reconfig = i40e_dcb_need_reconfig(pf, dcbx_cfg, &tmp_dcbx_cfg);
4499
4500         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg);
4501
4502         /* Overwrite the new configuration */
4503         *dcbx_cfg = tmp_dcbx_cfg;
4504
4505         if (!need_reconfig)
4506                 goto exit;
4507
4508         /* Reconfiguration needed quiesce all VSIs */
4509         i40e_pf_quiesce_all_vsi(pf);
4510
4511         /* Changes in configuration update VEB/VSI */
4512         i40e_dcb_reconfigure(pf);
4513
4514         i40e_pf_unquiesce_all_vsi(pf);
4515 exit:
4516         return ret;
4517 }
4518 #endif /* CONFIG_I40E_DCB */
4519
4520 /**
4521  * i40e_do_reset_safe - Protected reset path for userland calls.
4522  * @pf: board private structure
4523  * @reset_flags: which reset is requested
4524  *
4525  **/
4526 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
4527 {
4528         rtnl_lock();
4529         i40e_do_reset(pf, reset_flags);
4530         rtnl_unlock();
4531 }
4532
4533 /**
4534  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
4535  * @pf: board private structure
4536  * @e: event info posted on ARQ
4537  *
4538  * Handler for LAN Queue Overflow Event generated by the firmware for PF
4539  * and VF queues
4540  **/
4541 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
4542                                            struct i40e_arq_event_info *e)
4543 {
4544         struct i40e_aqc_lan_overflow *data =
4545                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
4546         u32 queue = le32_to_cpu(data->prtdcb_rupto);
4547         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
4548         struct i40e_hw *hw = &pf->hw;
4549         struct i40e_vf *vf;
4550         u16 vf_id;
4551
4552         dev_info(&pf->pdev->dev, "%s: Rx Queue Number = %d QTX_CTL=0x%08x\n",
4553                  __func__, queue, qtx_ctl);
4554
4555         /* Queue belongs to VF, find the VF and issue VF reset */
4556         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
4557             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
4558                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
4559                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
4560                 vf_id -= hw->func_caps.vf_base_id;
4561                 vf = &pf->vf[vf_id];
4562                 i40e_vc_notify_vf_reset(vf);
4563                 /* Allow VF to process pending reset notification */
4564                 msleep(20);
4565                 i40e_reset_vf(vf, false);
4566         }
4567 }
4568
4569 /**
4570  * i40e_service_event_complete - Finish up the service event
4571  * @pf: board private structure
4572  **/
4573 static void i40e_service_event_complete(struct i40e_pf *pf)
4574 {
4575         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
4576
4577         /* flush memory to make sure state is correct before next watchog */
4578         smp_mb__before_clear_bit();
4579         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
4580 }
4581
4582 /**
4583  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
4584  * @pf: board private structure
4585  **/
4586 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
4587 {
4588         if (!(pf->flags & I40E_FLAG_FDIR_REQUIRES_REINIT))
4589                 return;
4590
4591         pf->flags &= ~I40E_FLAG_FDIR_REQUIRES_REINIT;
4592
4593         /* if interface is down do nothing */
4594         if (test_bit(__I40E_DOWN, &pf->state))
4595                 return;
4596 }
4597
4598 /**
4599  * i40e_vsi_link_event - notify VSI of a link event
4600  * @vsi: vsi to be notified
4601  * @link_up: link up or down
4602  **/
4603 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
4604 {
4605         if (!vsi)
4606                 return;
4607
4608         switch (vsi->type) {
4609         case I40E_VSI_MAIN:
4610                 if (!vsi->netdev || !vsi->netdev_registered)
4611                         break;
4612
4613                 if (link_up) {
4614                         netif_carrier_on(vsi->netdev);
4615                         netif_tx_wake_all_queues(vsi->netdev);
4616                 } else {
4617                         netif_carrier_off(vsi->netdev);
4618                         netif_tx_stop_all_queues(vsi->netdev);
4619                 }
4620                 break;
4621
4622         case I40E_VSI_SRIOV:
4623                 break;
4624
4625         case I40E_VSI_VMDQ2:
4626         case I40E_VSI_CTRL:
4627         case I40E_VSI_MIRROR:
4628         default:
4629                 /* there is no notification for other VSIs */
4630                 break;
4631         }
4632 }
4633
4634 /**
4635  * i40e_veb_link_event - notify elements on the veb of a link event
4636  * @veb: veb to be notified
4637  * @link_up: link up or down
4638  **/
4639 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
4640 {
4641         struct i40e_pf *pf;
4642         int i;
4643
4644         if (!veb || !veb->pf)
4645                 return;
4646         pf = veb->pf;
4647
4648         /* depth first... */
4649         for (i = 0; i < I40E_MAX_VEB; i++)
4650                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
4651                         i40e_veb_link_event(pf->veb[i], link_up);
4652
4653         /* ... now the local VSIs */
4654         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4655                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
4656                         i40e_vsi_link_event(pf->vsi[i], link_up);
4657 }
4658
4659 /**
4660  * i40e_link_event - Update netif_carrier status
4661  * @pf: board private structure
4662  **/
4663 static void i40e_link_event(struct i40e_pf *pf)
4664 {
4665         bool new_link, old_link;
4666
4667         new_link = (pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP);
4668         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
4669
4670         if (new_link == old_link)
4671                 return;
4672
4673         if (!test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state))
4674                 netdev_info(pf->vsi[pf->lan_vsi]->netdev,
4675                             "NIC Link is %s\n", (new_link ? "Up" : "Down"));
4676
4677         /* Notify the base of the switch tree connected to
4678          * the link.  Floating VEBs are not notified.
4679          */
4680         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
4681                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
4682         else
4683                 i40e_vsi_link_event(pf->vsi[pf->lan_vsi], new_link);
4684
4685         if (pf->vf)
4686                 i40e_vc_notify_link_state(pf);
4687
4688         if (pf->flags & I40E_FLAG_PTP)
4689                 i40e_ptp_set_increment(pf);
4690 }
4691
4692 /**
4693  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
4694  * @pf: board private structure
4695  *
4696  * Set the per-queue flags to request a check for stuck queues in the irq
4697  * clean functions, then force interrupts to be sure the irq clean is called.
4698  **/
4699 static void i40e_check_hang_subtask(struct i40e_pf *pf)
4700 {
4701         int i, v;
4702
4703         /* If we're down or resetting, just bail */
4704         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
4705                 return;
4706
4707         /* for each VSI/netdev
4708          *     for each Tx queue
4709          *         set the check flag
4710          *     for each q_vector
4711          *         force an interrupt
4712          */
4713         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4714                 struct i40e_vsi *vsi = pf->vsi[v];
4715                 int armed = 0;
4716
4717                 if (!pf->vsi[v] ||
4718                     test_bit(__I40E_DOWN, &vsi->state) ||
4719                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
4720                         continue;
4721
4722                 for (i = 0; i < vsi->num_queue_pairs; i++) {
4723                         set_check_for_tx_hang(vsi->tx_rings[i]);
4724                         if (test_bit(__I40E_HANG_CHECK_ARMED,
4725                                      &vsi->tx_rings[i]->state))
4726                                 armed++;
4727                 }
4728
4729                 if (armed) {
4730                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
4731                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
4732                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
4733                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
4734                         } else {
4735                                 u16 vec = vsi->base_vector - 1;
4736                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
4737                                            I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
4738                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
4739                                         wr32(&vsi->back->hw,
4740                                              I40E_PFINT_DYN_CTLN(vec), val);
4741                         }
4742                         i40e_flush(&vsi->back->hw);
4743                 }
4744         }
4745 }
4746
4747 /**
4748  * i40e_watchdog_subtask - Check and bring link up
4749  * @pf: board private structure
4750  **/
4751 static void i40e_watchdog_subtask(struct i40e_pf *pf)
4752 {
4753         int i;
4754
4755         /* if interface is down do nothing */
4756         if (test_bit(__I40E_DOWN, &pf->state) ||
4757             test_bit(__I40E_CONFIG_BUSY, &pf->state))
4758                 return;
4759
4760         /* Update the stats for active netdevs so the network stack
4761          * can look at updated numbers whenever it cares to
4762          */
4763         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4764                 if (pf->vsi[i] && pf->vsi[i]->netdev)
4765                         i40e_update_stats(pf->vsi[i]);
4766
4767         /* Update the stats for the active switching components */
4768         for (i = 0; i < I40E_MAX_VEB; i++)
4769                 if (pf->veb[i])
4770                         i40e_update_veb_stats(pf->veb[i]);
4771
4772         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
4773 }
4774
4775 /**
4776  * i40e_reset_subtask - Set up for resetting the device and driver
4777  * @pf: board private structure
4778  **/
4779 static void i40e_reset_subtask(struct i40e_pf *pf)
4780 {
4781         u32 reset_flags = 0;
4782
4783         rtnl_lock();
4784         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
4785                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
4786                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
4787         }
4788         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
4789                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
4790                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4791         }
4792         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
4793                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
4794                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
4795         }
4796         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
4797                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
4798                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
4799         }
4800
4801         /* If there's a recovery already waiting, it takes
4802          * precedence before starting a new reset sequence.
4803          */
4804         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
4805                 i40e_handle_reset_warning(pf);
4806                 goto unlock;
4807         }
4808
4809         /* If we're already down or resetting, just bail */
4810         if (reset_flags &&
4811             !test_bit(__I40E_DOWN, &pf->state) &&
4812             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
4813                 i40e_do_reset(pf, reset_flags);
4814
4815 unlock:
4816         rtnl_unlock();
4817 }
4818
4819 /**
4820  * i40e_handle_link_event - Handle link event
4821  * @pf: board private structure
4822  * @e: event info posted on ARQ
4823  **/
4824 static void i40e_handle_link_event(struct i40e_pf *pf,
4825                                    struct i40e_arq_event_info *e)
4826 {
4827         struct i40e_hw *hw = &pf->hw;
4828         struct i40e_aqc_get_link_status *status =
4829                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
4830         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
4831
4832         /* save off old link status information */
4833         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
4834                sizeof(pf->hw.phy.link_info_old));
4835
4836         /* update link status */
4837         hw_link_info->phy_type = (enum i40e_aq_phy_type)status->phy_type;
4838         hw_link_info->link_speed = (enum i40e_aq_link_speed)status->link_speed;
4839         hw_link_info->link_info = status->link_info;
4840         hw_link_info->an_info = status->an_info;
4841         hw_link_info->ext_info = status->ext_info;
4842         hw_link_info->lse_enable =
4843                 le16_to_cpu(status->command_flags) &
4844                             I40E_AQ_LSE_ENABLE;
4845
4846         /* process the event */
4847         i40e_link_event(pf);
4848
4849         /* Do a new status request to re-enable LSE reporting
4850          * and load new status information into the hw struct,
4851          * then see if the status changed while processing the
4852          * initial event.
4853          */
4854         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
4855         i40e_link_event(pf);
4856 }
4857
4858 /**
4859  * i40e_clean_adminq_subtask - Clean the AdminQ rings
4860  * @pf: board private structure
4861  **/
4862 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
4863 {
4864         struct i40e_arq_event_info event;
4865         struct i40e_hw *hw = &pf->hw;
4866         u16 pending, i = 0;
4867         i40e_status ret;
4868         u16 opcode;
4869         u32 val;
4870
4871         if (!test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state))
4872                 return;
4873
4874         event.msg_size = I40E_MAX_AQ_BUF_SIZE;
4875         event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
4876         if (!event.msg_buf)
4877                 return;
4878
4879         do {
4880                 event.msg_size = I40E_MAX_AQ_BUF_SIZE; /* reinit each time */
4881                 ret = i40e_clean_arq_element(hw, &event, &pending);
4882                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK) {
4883                         dev_info(&pf->pdev->dev, "No ARQ event found\n");
4884                         break;
4885                 } else if (ret) {
4886                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
4887                         break;
4888                 }
4889
4890                 opcode = le16_to_cpu(event.desc.opcode);
4891                 switch (opcode) {
4892
4893                 case i40e_aqc_opc_get_link_status:
4894                         i40e_handle_link_event(pf, &event);
4895                         break;
4896                 case i40e_aqc_opc_send_msg_to_pf:
4897                         ret = i40e_vc_process_vf_msg(pf,
4898                                         le16_to_cpu(event.desc.retval),
4899                                         le32_to_cpu(event.desc.cookie_high),
4900                                         le32_to_cpu(event.desc.cookie_low),
4901                                         event.msg_buf,
4902                                         event.msg_size);
4903                         break;
4904                 case i40e_aqc_opc_lldp_update_mib:
4905                         dev_info(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
4906 #ifdef CONFIG_I40E_DCB
4907                         rtnl_lock();
4908                         ret = i40e_handle_lldp_event(pf, &event);
4909                         rtnl_unlock();
4910 #endif /* CONFIG_I40E_DCB */
4911                         break;
4912                 case i40e_aqc_opc_event_lan_overflow:
4913                         dev_info(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
4914                         i40e_handle_lan_overflow_event(pf, &event);
4915                         break;
4916                 case i40e_aqc_opc_send_msg_to_peer:
4917                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
4918                         break;
4919                 default:
4920                         dev_info(&pf->pdev->dev,
4921                                  "ARQ Error: Unknown event 0x%04x received\n",
4922                                  opcode);
4923                         break;
4924                 }
4925         } while (pending && (i++ < pf->adminq_work_limit));
4926
4927         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
4928         /* re-enable Admin queue interrupt cause */
4929         val = rd32(hw, I40E_PFINT_ICR0_ENA);
4930         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
4931         wr32(hw, I40E_PFINT_ICR0_ENA, val);
4932         i40e_flush(hw);
4933
4934         kfree(event.msg_buf);
4935 }
4936
4937 /**
4938  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
4939  * @veb: pointer to the VEB instance
4940  *
4941  * This is a recursive function that first builds the attached VSIs then
4942  * recurses in to build the next layer of VEB.  We track the connections
4943  * through our own index numbers because the seid's from the HW could
4944  * change across the reset.
4945  **/
4946 static int i40e_reconstitute_veb(struct i40e_veb *veb)
4947 {
4948         struct i40e_vsi *ctl_vsi = NULL;
4949         struct i40e_pf *pf = veb->pf;
4950         int v, veb_idx;
4951         int ret;
4952
4953         /* build VSI that owns this VEB, temporarily attached to base VEB */
4954         for (v = 0; v < pf->hw.func_caps.num_vsis && !ctl_vsi; v++) {
4955                 if (pf->vsi[v] &&
4956                     pf->vsi[v]->veb_idx == veb->idx &&
4957                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
4958                         ctl_vsi = pf->vsi[v];
4959                         break;
4960                 }
4961         }
4962         if (!ctl_vsi) {
4963                 dev_info(&pf->pdev->dev,
4964                          "missing owner VSI for veb_idx %d\n", veb->idx);
4965                 ret = -ENOENT;
4966                 goto end_reconstitute;
4967         }
4968         if (ctl_vsi != pf->vsi[pf->lan_vsi])
4969                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
4970         ret = i40e_add_vsi(ctl_vsi);
4971         if (ret) {
4972                 dev_info(&pf->pdev->dev,
4973                          "rebuild of owner VSI failed: %d\n", ret);
4974                 goto end_reconstitute;
4975         }
4976         i40e_vsi_reset_stats(ctl_vsi);
4977
4978         /* create the VEB in the switch and move the VSI onto the VEB */
4979         ret = i40e_add_veb(veb, ctl_vsi);
4980         if (ret)
4981                 goto end_reconstitute;
4982
4983         /* create the remaining VSIs attached to this VEB */
4984         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4985                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
4986                         continue;
4987
4988                 if (pf->vsi[v]->veb_idx == veb->idx) {
4989                         struct i40e_vsi *vsi = pf->vsi[v];
4990                         vsi->uplink_seid = veb->seid;
4991                         ret = i40e_add_vsi(vsi);
4992                         if (ret) {
4993                                 dev_info(&pf->pdev->dev,
4994                                          "rebuild of vsi_idx %d failed: %d\n",
4995                                          v, ret);
4996                                 goto end_reconstitute;
4997                         }
4998                         i40e_vsi_reset_stats(vsi);
4999                 }
5000         }
5001
5002         /* create any VEBs attached to this VEB - RECURSION */
5003         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5004                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5005                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5006                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5007                         if (ret)
5008                                 break;
5009                 }
5010         }
5011
5012 end_reconstitute:
5013         return ret;
5014 }
5015
5016 /**
5017  * i40e_get_capabilities - get info about the HW
5018  * @pf: the PF struct
5019  **/
5020 static int i40e_get_capabilities(struct i40e_pf *pf)
5021 {
5022         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5023         u16 data_size;
5024         int buf_len;
5025         int err;
5026
5027         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5028         do {
5029                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5030                 if (!cap_buf)
5031                         return -ENOMEM;
5032
5033                 /* this loads the data into the hw struct for us */
5034                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5035                                             &data_size,
5036                                             i40e_aqc_opc_list_func_capabilities,
5037                                             NULL);
5038                 /* data loaded, buffer no longer needed */
5039                 kfree(cap_buf);
5040
5041                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
5042                         /* retry with a larger buffer */
5043                         buf_len = data_size;
5044                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
5045                         dev_info(&pf->pdev->dev,
5046                                  "capability discovery failed: aq=%d\n",
5047                                  pf->hw.aq.asq_last_status);
5048                         return -ENODEV;
5049                 }
5050         } while (err);
5051
5052         /* increment MSI-X count because current FW skips one */
5053         pf->hw.func_caps.num_msix_vectors++;
5054
5055         if (pf->hw.debug_mask & I40E_DEBUG_USER)
5056                 dev_info(&pf->pdev->dev,
5057                          "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",
5058                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
5059                          pf->hw.func_caps.num_msix_vectors,
5060                          pf->hw.func_caps.num_msix_vectors_vf,
5061                          pf->hw.func_caps.fd_filters_guaranteed,
5062                          pf->hw.func_caps.fd_filters_best_effort,
5063                          pf->hw.func_caps.num_tx_qp,
5064                          pf->hw.func_caps.num_vsis);
5065
5066 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
5067                        + pf->hw.func_caps.num_vfs)
5068         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
5069                 dev_info(&pf->pdev->dev,
5070                          "got num_vsis %d, setting num_vsis to %d\n",
5071                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
5072                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
5073         }
5074
5075         return 0;
5076 }
5077
5078 static int i40e_vsi_clear(struct i40e_vsi *vsi);
5079
5080 /**
5081  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
5082  * @pf: board private structure
5083  **/
5084 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
5085 {
5086         struct i40e_vsi *vsi;
5087         bool new_vsi = false;
5088         int err, i;
5089
5090         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
5091                 return;
5092
5093         /* find existing VSI and see if it needs configuring */
5094         vsi = NULL;
5095         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
5096                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5097                         vsi = pf->vsi[i];
5098                         break;
5099                 }
5100         }
5101
5102         /* create a new VSI if none exists */
5103         if (!vsi) {
5104                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
5105                                      pf->vsi[pf->lan_vsi]->seid, 0);
5106                 if (!vsi) {
5107                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
5108                         goto err_vsi;
5109                 }
5110                 new_vsi = true;
5111         }
5112         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
5113
5114         err = i40e_vsi_setup_tx_resources(vsi);
5115         if (err)
5116                 goto err_setup_tx;
5117         err = i40e_vsi_setup_rx_resources(vsi);
5118         if (err)
5119                 goto err_setup_rx;
5120
5121         if (new_vsi) {
5122                 char int_name[IFNAMSIZ + 9];
5123                 err = i40e_vsi_configure(vsi);
5124                 if (err)
5125                         goto err_setup_rx;
5126                 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
5127                          dev_driver_string(&pf->pdev->dev));
5128                 err = i40e_vsi_request_irq(vsi, int_name);
5129                 if (err)
5130                         goto err_setup_rx;
5131                 err = i40e_up_complete(vsi);
5132                 if (err)
5133                         goto err_up_complete;
5134         }
5135
5136         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
5137         return;
5138
5139 err_up_complete:
5140         i40e_down(vsi);
5141         i40e_vsi_free_irq(vsi);
5142 err_setup_rx:
5143         i40e_vsi_free_rx_resources(vsi);
5144 err_setup_tx:
5145         i40e_vsi_free_tx_resources(vsi);
5146 err_vsi:
5147         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
5148         i40e_vsi_clear(vsi);
5149 }
5150
5151 /**
5152  * i40e_fdir_teardown - release the Flow Director resources
5153  * @pf: board private structure
5154  **/
5155 static void i40e_fdir_teardown(struct i40e_pf *pf)
5156 {
5157         int i;
5158
5159         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
5160                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5161                         i40e_vsi_release(pf->vsi[i]);
5162                         break;
5163                 }
5164         }
5165 }
5166
5167 /**
5168  * i40e_prep_for_reset - prep for the core to reset
5169  * @pf: board private structure
5170  *
5171  * Close up the VFs and other things in prep for pf Reset.
5172   **/
5173 static int i40e_prep_for_reset(struct i40e_pf *pf)
5174 {
5175         struct i40e_hw *hw = &pf->hw;
5176         i40e_status ret;
5177         u32 v;
5178
5179         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
5180         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
5181                 return 0;
5182
5183         dev_info(&pf->pdev->dev, "Tearing down internal switch for reset\n");
5184
5185         if (i40e_check_asq_alive(hw))
5186                 i40e_vc_notify_reset(pf);
5187
5188         /* quiesce the VSIs and their queues that are not already DOWN */
5189         i40e_pf_quiesce_all_vsi(pf);
5190
5191         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
5192                 if (pf->vsi[v])
5193                         pf->vsi[v]->seid = 0;
5194         }
5195
5196         i40e_shutdown_adminq(&pf->hw);
5197
5198         /* call shutdown HMC */
5199         ret = i40e_shutdown_lan_hmc(hw);
5200         if (ret) {
5201                 dev_info(&pf->pdev->dev, "shutdown_lan_hmc failed: %d\n", ret);
5202                 clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
5203         }
5204         return ret;
5205 }
5206
5207 /**
5208  * i40e_reset_and_rebuild - reset and rebuild using a saved config
5209  * @pf: board private structure
5210  * @reinit: if the Main VSI needs to re-initialized.
5211  **/
5212 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
5213 {
5214         struct i40e_driver_version dv;
5215         struct i40e_hw *hw = &pf->hw;
5216         i40e_status ret;
5217         u32 v;
5218
5219         /* Now we wait for GRST to settle out.
5220          * We don't have to delete the VEBs or VSIs from the hw switch
5221          * because the reset will make them disappear.
5222          */
5223         ret = i40e_pf_reset(hw);
5224         if (ret)
5225                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
5226         pf->pfr_count++;
5227
5228         if (test_bit(__I40E_DOWN, &pf->state))
5229                 goto end_core_reset;
5230         dev_info(&pf->pdev->dev, "Rebuilding internal switch\n");
5231
5232         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
5233         ret = i40e_init_adminq(&pf->hw);
5234         if (ret) {
5235                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
5236                 goto end_core_reset;
5237         }
5238
5239         ret = i40e_get_capabilities(pf);
5240         if (ret) {
5241                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
5242                          ret);
5243                 goto end_core_reset;
5244         }
5245
5246         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
5247                                 hw->func_caps.num_rx_qp,
5248                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
5249         if (ret) {
5250                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
5251                 goto end_core_reset;
5252         }
5253         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
5254         if (ret) {
5255                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
5256                 goto end_core_reset;
5257         }
5258
5259 #ifdef CONFIG_I40E_DCB
5260         ret = i40e_init_pf_dcb(pf);
5261         if (ret) {
5262                 dev_info(&pf->pdev->dev, "init_pf_dcb failed: %d\n", ret);
5263                 goto end_core_reset;
5264         }
5265 #endif /* CONFIG_I40E_DCB */
5266
5267         /* do basic switch setup */
5268         ret = i40e_setup_pf_switch(pf, reinit);
5269         if (ret)
5270                 goto end_core_reset;
5271
5272         /* Rebuild the VSIs and VEBs that existed before reset.
5273          * They are still in our local switch element arrays, so only
5274          * need to rebuild the switch model in the HW.
5275          *
5276          * If there were VEBs but the reconstitution failed, we'll try
5277          * try to recover minimal use by getting the basic PF VSI working.
5278          */
5279         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
5280                 dev_info(&pf->pdev->dev, "attempting to rebuild switch\n");
5281                 /* find the one VEB connected to the MAC, and find orphans */
5282                 for (v = 0; v < I40E_MAX_VEB; v++) {
5283                         if (!pf->veb[v])
5284                                 continue;
5285
5286                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
5287                             pf->veb[v]->uplink_seid == 0) {
5288                                 ret = i40e_reconstitute_veb(pf->veb[v]);
5289
5290                                 if (!ret)
5291                                         continue;
5292
5293                                 /* If Main VEB failed, we're in deep doodoo,
5294                                  * so give up rebuilding the switch and set up
5295                                  * for minimal rebuild of PF VSI.
5296                                  * If orphan failed, we'll report the error
5297                                  * but try to keep going.
5298                                  */
5299                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
5300                                         dev_info(&pf->pdev->dev,
5301                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
5302                                                  ret);
5303                                         pf->vsi[pf->lan_vsi]->uplink_seid
5304                                                                 = pf->mac_seid;
5305                                         break;
5306                                 } else if (pf->veb[v]->uplink_seid == 0) {
5307                                         dev_info(&pf->pdev->dev,
5308                                                  "rebuild of orphan VEB failed: %d\n",
5309                                                  ret);
5310                                 }
5311                         }
5312                 }
5313         }
5314
5315         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
5316                 dev_info(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
5317                 /* no VEB, so rebuild only the Main VSI */
5318                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
5319                 if (ret) {
5320                         dev_info(&pf->pdev->dev,
5321                                  "rebuild of Main VSI failed: %d\n", ret);
5322                         goto end_core_reset;
5323                 }
5324         }
5325
5326         /* reinit the misc interrupt */
5327         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5328                 ret = i40e_setup_misc_vector(pf);
5329
5330         /* restart the VSIs that were rebuilt and running before the reset */
5331         i40e_pf_unquiesce_all_vsi(pf);
5332
5333         if (pf->num_alloc_vfs) {
5334                 for (v = 0; v < pf->num_alloc_vfs; v++)
5335                         i40e_reset_vf(&pf->vf[v], true);
5336         }
5337
5338         /* tell the firmware that we're starting */
5339         dv.major_version = DRV_VERSION_MAJOR;
5340         dv.minor_version = DRV_VERSION_MINOR;
5341         dv.build_version = DRV_VERSION_BUILD;
5342         dv.subbuild_version = 0;
5343         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
5344
5345         dev_info(&pf->pdev->dev, "PF reset done\n");
5346
5347 end_core_reset:
5348         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
5349 }
5350
5351 /**
5352  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
5353  * @pf: board private structure
5354  *
5355  * Close up the VFs and other things in prep for a Core Reset,
5356  * then get ready to rebuild the world.
5357  **/
5358 static void i40e_handle_reset_warning(struct i40e_pf *pf)
5359 {
5360         i40e_status ret;
5361
5362         ret = i40e_prep_for_reset(pf);
5363         if (!ret)
5364                 i40e_reset_and_rebuild(pf, false);
5365 }
5366
5367 /**
5368  * i40e_handle_mdd_event
5369  * @pf: pointer to the pf structure
5370  *
5371  * Called from the MDD irq handler to identify possibly malicious vfs
5372  **/
5373 static void i40e_handle_mdd_event(struct i40e_pf *pf)
5374 {
5375         struct i40e_hw *hw = &pf->hw;
5376         bool mdd_detected = false;
5377         struct i40e_vf *vf;
5378         u32 reg;
5379         int i;
5380
5381         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
5382                 return;
5383
5384         /* find what triggered the MDD event */
5385         reg = rd32(hw, I40E_GL_MDET_TX);
5386         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
5387                 u8 func = (reg & I40E_GL_MDET_TX_FUNCTION_MASK)
5388                                 >> I40E_GL_MDET_TX_FUNCTION_SHIFT;
5389                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_SHIFT)
5390                                 >> I40E_GL_MDET_TX_EVENT_SHIFT;
5391                 u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK)
5392                                 >> I40E_GL_MDET_TX_QUEUE_SHIFT;
5393                 dev_info(&pf->pdev->dev,
5394                          "Malicious Driver Detection TX event 0x%02x on q %d of function 0x%02x\n",
5395                          event, queue, func);
5396                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
5397                 mdd_detected = true;
5398         }
5399         reg = rd32(hw, I40E_GL_MDET_RX);
5400         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
5401                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK)
5402                                 >> I40E_GL_MDET_RX_FUNCTION_SHIFT;
5403                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_SHIFT)
5404                                 >> I40E_GL_MDET_RX_EVENT_SHIFT;
5405                 u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK)
5406                                 >> I40E_GL_MDET_RX_QUEUE_SHIFT;
5407                 dev_info(&pf->pdev->dev,
5408                          "Malicious Driver Detection RX event 0x%02x on q %d of function 0x%02x\n",
5409                          event, queue, func);
5410                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
5411                 mdd_detected = true;
5412         }
5413
5414         /* see if one of the VFs needs its hand slapped */
5415         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
5416                 vf = &(pf->vf[i]);
5417                 reg = rd32(hw, I40E_VP_MDET_TX(i));
5418                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
5419                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
5420                         vf->num_mdd_events++;
5421                         dev_info(&pf->pdev->dev, "MDD TX event on VF %d\n", i);
5422                 }
5423
5424                 reg = rd32(hw, I40E_VP_MDET_RX(i));
5425                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
5426                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
5427                         vf->num_mdd_events++;
5428                         dev_info(&pf->pdev->dev, "MDD RX event on VF %d\n", i);
5429                 }
5430
5431                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
5432                         dev_info(&pf->pdev->dev,
5433                                  "Too many MDD events on VF %d, disabled\n", i);
5434                         dev_info(&pf->pdev->dev,
5435                                  "Use PF Control I/F to re-enable the VF\n");
5436                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
5437                 }
5438         }
5439
5440         /* re-enable mdd interrupt cause */
5441         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
5442         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
5443         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
5444         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
5445         i40e_flush(hw);
5446 }
5447
5448 #ifdef CONFIG_I40E_VXLAN
5449 /**
5450  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
5451  * @pf: board private structure
5452  **/
5453 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
5454 {
5455         const int vxlan_hdr_qwords = 4;
5456         struct i40e_hw *hw = &pf->hw;
5457         i40e_status ret;
5458         u8 filter_index;
5459         __be16 port;
5460         int i;
5461
5462         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
5463                 return;
5464
5465         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
5466
5467         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
5468                 if (pf->pending_vxlan_bitmap & (1 << i)) {
5469                         pf->pending_vxlan_bitmap &= ~(1 << i);
5470                         port = pf->vxlan_ports[i];
5471                         ret = port ?
5472                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
5473                                                      vxlan_hdr_qwords,
5474                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
5475                                                      &filter_index, NULL)
5476                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
5477
5478                         if (ret) {
5479                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
5480                                          port ? "adding" : "deleting",
5481                                          ntohs(port), port ? i : i);
5482
5483                                 pf->vxlan_ports[i] = 0;
5484                         } else {
5485                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
5486                                          port ? "Added" : "Deleted",
5487                                          ntohs(port), port ? i : filter_index);
5488                         }
5489                 }
5490         }
5491 }
5492
5493 #endif
5494 /**
5495  * i40e_service_task - Run the driver's async subtasks
5496  * @work: pointer to work_struct containing our data
5497  **/
5498 static void i40e_service_task(struct work_struct *work)
5499 {
5500         struct i40e_pf *pf = container_of(work,
5501                                           struct i40e_pf,
5502                                           service_task);
5503         unsigned long start_time = jiffies;
5504
5505         i40e_reset_subtask(pf);
5506         i40e_handle_mdd_event(pf);
5507         i40e_vc_process_vflr_event(pf);
5508         i40e_watchdog_subtask(pf);
5509         i40e_fdir_reinit_subtask(pf);
5510         i40e_check_hang_subtask(pf);
5511         i40e_sync_filters_subtask(pf);
5512 #ifdef CONFIG_I40E_VXLAN
5513         i40e_sync_vxlan_filters_subtask(pf);
5514 #endif
5515         i40e_clean_adminq_subtask(pf);
5516
5517         i40e_service_event_complete(pf);
5518
5519         /* If the tasks have taken longer than one timer cycle or there
5520          * is more work to be done, reschedule the service task now
5521          * rather than wait for the timer to tick again.
5522          */
5523         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
5524             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
5525             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
5526             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
5527                 i40e_service_event_schedule(pf);
5528 }
5529
5530 /**
5531  * i40e_service_timer - timer callback
5532  * @data: pointer to PF struct
5533  **/
5534 static void i40e_service_timer(unsigned long data)
5535 {
5536         struct i40e_pf *pf = (struct i40e_pf *)data;
5537
5538         mod_timer(&pf->service_timer,
5539                   round_jiffies(jiffies + pf->service_timer_period));
5540         i40e_service_event_schedule(pf);
5541 }
5542
5543 /**
5544  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
5545  * @vsi: the VSI being configured
5546  **/
5547 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
5548 {
5549         struct i40e_pf *pf = vsi->back;
5550
5551         switch (vsi->type) {
5552         case I40E_VSI_MAIN:
5553                 vsi->alloc_queue_pairs = pf->num_lan_qps;
5554                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5555                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5556                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5557                         vsi->num_q_vectors = pf->num_lan_msix;
5558                 else
5559                         vsi->num_q_vectors = 1;
5560
5561                 break;
5562
5563         case I40E_VSI_FDIR:
5564                 vsi->alloc_queue_pairs = 1;
5565                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
5566                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5567                 vsi->num_q_vectors = 1;
5568                 break;
5569
5570         case I40E_VSI_VMDQ2:
5571                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
5572                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5573                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5574                 vsi->num_q_vectors = pf->num_vmdq_msix;
5575                 break;
5576
5577         case I40E_VSI_SRIOV:
5578                 vsi->alloc_queue_pairs = pf->num_vf_qps;
5579                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5580                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5581                 break;
5582
5583         default:
5584                 WARN_ON(1);
5585                 return -ENODATA;
5586         }
5587
5588         return 0;
5589 }
5590
5591 /**
5592  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
5593  * @type: VSI pointer
5594  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
5595  *
5596  * On error: returns error code (negative)
5597  * On success: returns 0
5598  **/
5599 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
5600 {
5601         int size;
5602         int ret = 0;
5603
5604         /* allocate memory for both Tx and Rx ring pointers */
5605         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
5606         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
5607         if (!vsi->tx_rings)
5608                 return -ENOMEM;
5609         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
5610
5611         if (alloc_qvectors) {
5612                 /* allocate memory for q_vector pointers */
5613                 size = sizeof(struct i40e_q_vectors *) * vsi->num_q_vectors;
5614                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
5615                 if (!vsi->q_vectors) {
5616                         ret = -ENOMEM;
5617                         goto err_vectors;
5618                 }
5619         }
5620         return ret;
5621
5622 err_vectors:
5623         kfree(vsi->tx_rings);
5624         return ret;
5625 }
5626
5627 /**
5628  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
5629  * @pf: board private structure
5630  * @type: type of VSI
5631  *
5632  * On error: returns error code (negative)
5633  * On success: returns vsi index in PF (positive)
5634  **/
5635 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
5636 {
5637         int ret = -ENODEV;
5638         struct i40e_vsi *vsi;
5639         int vsi_idx;
5640         int i;
5641
5642         /* Need to protect the allocation of the VSIs at the PF level */
5643         mutex_lock(&pf->switch_mutex);
5644
5645         /* VSI list may be fragmented if VSI creation/destruction has
5646          * been happening.  We can afford to do a quick scan to look
5647          * for any free VSIs in the list.
5648          *
5649          * find next empty vsi slot, looping back around if necessary
5650          */
5651         i = pf->next_vsi;
5652         while (i < pf->hw.func_caps.num_vsis && pf->vsi[i])
5653                 i++;
5654         if (i >= pf->hw.func_caps.num_vsis) {
5655                 i = 0;
5656                 while (i < pf->next_vsi && pf->vsi[i])
5657                         i++;
5658         }
5659
5660         if (i < pf->hw.func_caps.num_vsis && !pf->vsi[i]) {
5661                 vsi_idx = i;             /* Found one! */
5662         } else {
5663                 ret = -ENODEV;
5664                 goto unlock_pf;  /* out of VSI slots! */
5665         }
5666         pf->next_vsi = ++i;
5667
5668         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
5669         if (!vsi) {
5670                 ret = -ENOMEM;
5671                 goto unlock_pf;
5672         }
5673         vsi->type = type;
5674         vsi->back = pf;
5675         set_bit(__I40E_DOWN, &vsi->state);
5676         vsi->flags = 0;
5677         vsi->idx = vsi_idx;
5678         vsi->rx_itr_setting = pf->rx_itr_default;
5679         vsi->tx_itr_setting = pf->tx_itr_default;
5680         vsi->netdev_registered = false;
5681         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
5682         INIT_LIST_HEAD(&vsi->mac_filter_list);
5683
5684         ret = i40e_set_num_rings_in_vsi(vsi);
5685         if (ret)
5686                 goto err_rings;
5687
5688         ret = i40e_vsi_alloc_arrays(vsi, true);
5689         if (ret)
5690                 goto err_rings;
5691
5692         /* Setup default MSIX irq handler for VSI */
5693         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
5694
5695         pf->vsi[vsi_idx] = vsi;
5696         ret = vsi_idx;
5697         goto unlock_pf;
5698
5699 err_rings:
5700         pf->next_vsi = i - 1;
5701         kfree(vsi);
5702 unlock_pf:
5703         mutex_unlock(&pf->switch_mutex);
5704         return ret;
5705 }
5706
5707 /**
5708  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
5709  * @type: VSI pointer
5710  * @free_qvectors: a bool to specify if q_vectors need to be freed.
5711  *
5712  * On error: returns error code (negative)
5713  * On success: returns 0
5714  **/
5715 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
5716 {
5717         /* free the ring and vector containers */
5718         if (free_qvectors) {
5719                 kfree(vsi->q_vectors);
5720                 vsi->q_vectors = NULL;
5721         }
5722         kfree(vsi->tx_rings);
5723         vsi->tx_rings = NULL;
5724         vsi->rx_rings = NULL;
5725 }
5726
5727 /**
5728  * i40e_vsi_clear - Deallocate the VSI provided
5729  * @vsi: the VSI being un-configured
5730  **/
5731 static int i40e_vsi_clear(struct i40e_vsi *vsi)
5732 {
5733         struct i40e_pf *pf;
5734
5735         if (!vsi)
5736                 return 0;
5737
5738         if (!vsi->back)
5739                 goto free_vsi;
5740         pf = vsi->back;
5741
5742         mutex_lock(&pf->switch_mutex);
5743         if (!pf->vsi[vsi->idx]) {
5744                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
5745                         vsi->idx, vsi->idx, vsi, vsi->type);
5746                 goto unlock_vsi;
5747         }
5748
5749         if (pf->vsi[vsi->idx] != vsi) {
5750                 dev_err(&pf->pdev->dev,
5751                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
5752                         pf->vsi[vsi->idx]->idx,
5753                         pf->vsi[vsi->idx],
5754                         pf->vsi[vsi->idx]->type,
5755                         vsi->idx, vsi, vsi->type);
5756                 goto unlock_vsi;
5757         }
5758
5759         /* updates the pf for this cleared vsi */
5760         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
5761         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
5762
5763         i40e_vsi_free_arrays(vsi, true);
5764
5765         pf->vsi[vsi->idx] = NULL;
5766         if (vsi->idx < pf->next_vsi)
5767                 pf->next_vsi = vsi->idx;
5768
5769 unlock_vsi:
5770         mutex_unlock(&pf->switch_mutex);
5771 free_vsi:
5772         kfree(vsi);
5773
5774         return 0;
5775 }
5776
5777 /**
5778  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
5779  * @vsi: the VSI being cleaned
5780  **/
5781 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
5782 {
5783         int i;
5784
5785         if (vsi->tx_rings && vsi->tx_rings[0]) {
5786                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
5787                         kfree_rcu(vsi->tx_rings[i], rcu);
5788                         vsi->tx_rings[i] = NULL;
5789                         vsi->rx_rings[i] = NULL;
5790                 }
5791         }
5792 }
5793
5794 /**
5795  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
5796  * @vsi: the VSI being configured
5797  **/
5798 static int i40e_alloc_rings(struct i40e_vsi *vsi)
5799 {
5800         struct i40e_pf *pf = vsi->back;
5801         int i;
5802
5803         /* Set basic values in the rings to be used later during open() */
5804         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
5805                 struct i40e_ring *tx_ring;
5806                 struct i40e_ring *rx_ring;
5807
5808                 /* allocate space for both Tx and Rx in one shot */
5809                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
5810                 if (!tx_ring)
5811                         goto err_out;
5812
5813                 tx_ring->queue_index = i;
5814                 tx_ring->reg_idx = vsi->base_queue + i;
5815                 tx_ring->ring_active = false;
5816                 tx_ring->vsi = vsi;
5817                 tx_ring->netdev = vsi->netdev;
5818                 tx_ring->dev = &pf->pdev->dev;
5819                 tx_ring->count = vsi->num_desc;
5820                 tx_ring->size = 0;
5821                 tx_ring->dcb_tc = 0;
5822                 vsi->tx_rings[i] = tx_ring;
5823
5824                 rx_ring = &tx_ring[1];
5825                 rx_ring->queue_index = i;
5826                 rx_ring->reg_idx = vsi->base_queue + i;
5827                 rx_ring->ring_active = false;
5828                 rx_ring->vsi = vsi;
5829                 rx_ring->netdev = vsi->netdev;
5830                 rx_ring->dev = &pf->pdev->dev;
5831                 rx_ring->count = vsi->num_desc;
5832                 rx_ring->size = 0;
5833                 rx_ring->dcb_tc = 0;
5834                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
5835                         set_ring_16byte_desc_enabled(rx_ring);
5836                 else
5837                         clear_ring_16byte_desc_enabled(rx_ring);
5838                 vsi->rx_rings[i] = rx_ring;
5839         }
5840
5841         return 0;
5842
5843 err_out:
5844         i40e_vsi_clear_rings(vsi);
5845         return -ENOMEM;
5846 }
5847
5848 /**
5849  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
5850  * @pf: board private structure
5851  * @vectors: the number of MSI-X vectors to request
5852  *
5853  * Returns the number of vectors reserved, or error
5854  **/
5855 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
5856 {
5857         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
5858                                         I40E_MIN_MSIX, vectors);
5859         if (vectors < 0) {
5860                 dev_info(&pf->pdev->dev,
5861                          "MSI-X vector reservation failed: %d\n", vectors);
5862                 vectors = 0;
5863         }
5864
5865         pf->num_msix_entries = vectors;
5866
5867         return vectors;
5868 }
5869
5870 /**
5871  * i40e_init_msix - Setup the MSIX capability
5872  * @pf: board private structure
5873  *
5874  * Work with the OS to set up the MSIX vectors needed.
5875  *
5876  * Returns 0 on success, negative on failure
5877  **/
5878 static int i40e_init_msix(struct i40e_pf *pf)
5879 {
5880         i40e_status err = 0;
5881         struct i40e_hw *hw = &pf->hw;
5882         int v_budget, i;
5883         int vec;
5884
5885         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
5886                 return -ENODEV;
5887
5888         /* The number of vectors we'll request will be comprised of:
5889          *   - Add 1 for "other" cause for Admin Queue events, etc.
5890          *   - The number of LAN queue pairs
5891          *      - Queues being used for RSS.
5892          *              We don't need as many as max_rss_size vectors.
5893          *              use rss_size instead in the calculation since that
5894          *              is governed by number of cpus in the system.
5895          *      - assumes symmetric Tx/Rx pairing
5896          *   - The number of VMDq pairs
5897          * Once we count this up, try the request.
5898          *
5899          * If we can't get what we want, we'll simplify to nearly nothing
5900          * and try again.  If that still fails, we punt.
5901          */
5902         pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
5903         pf->num_vmdq_msix = pf->num_vmdq_qps;
5904         v_budget = 1 + pf->num_lan_msix;
5905         v_budget += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
5906         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
5907                 v_budget++;
5908
5909         /* Scale down if necessary, and the rings will share vectors */
5910         v_budget = min_t(int, v_budget, hw->func_caps.num_msix_vectors);
5911
5912         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
5913                                    GFP_KERNEL);
5914         if (!pf->msix_entries)
5915                 return -ENOMEM;
5916
5917         for (i = 0; i < v_budget; i++)
5918                 pf->msix_entries[i].entry = i;
5919         vec = i40e_reserve_msix_vectors(pf, v_budget);
5920         if (vec < I40E_MIN_MSIX) {
5921                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
5922                 kfree(pf->msix_entries);
5923                 pf->msix_entries = NULL;
5924                 return -ENODEV;
5925
5926         } else if (vec == I40E_MIN_MSIX) {
5927                 /* Adjust for minimal MSIX use */
5928                 dev_info(&pf->pdev->dev, "Features disabled, not enough MSI-X vectors\n");
5929                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
5930                 pf->num_vmdq_vsis = 0;
5931                 pf->num_vmdq_qps = 0;
5932                 pf->num_vmdq_msix = 0;
5933                 pf->num_lan_qps = 1;
5934                 pf->num_lan_msix = 1;
5935
5936         } else if (vec != v_budget) {
5937                 /* Scale vector usage down */
5938                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
5939                 vec--;                    /* reserve the misc vector */
5940
5941                 /* partition out the remaining vectors */
5942                 switch (vec) {
5943                 case 2:
5944                         pf->num_vmdq_vsis = 1;
5945                         pf->num_lan_msix = 1;
5946                         break;
5947                 case 3:
5948                         pf->num_vmdq_vsis = 1;
5949                         pf->num_lan_msix = 2;
5950                         break;
5951                 default:
5952                         pf->num_lan_msix = min_t(int, (vec / 2),
5953                                                  pf->num_lan_qps);
5954                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
5955                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
5956                         break;
5957                 }
5958         }
5959
5960         return err;
5961 }
5962
5963 /**
5964  * i40e_alloc_q_vector - Allocate memory for a single interrupt vector
5965  * @vsi: the VSI being configured
5966  * @v_idx: index of the vector in the vsi struct
5967  *
5968  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
5969  **/
5970 static int i40e_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
5971 {
5972         struct i40e_q_vector *q_vector;
5973
5974         /* allocate q_vector */
5975         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
5976         if (!q_vector)
5977                 return -ENOMEM;
5978
5979         q_vector->vsi = vsi;
5980         q_vector->v_idx = v_idx;
5981         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
5982         if (vsi->netdev)
5983                 netif_napi_add(vsi->netdev, &q_vector->napi,
5984                                i40e_napi_poll, vsi->work_limit);
5985
5986         q_vector->rx.latency_range = I40E_LOW_LATENCY;
5987         q_vector->tx.latency_range = I40E_LOW_LATENCY;
5988
5989         /* tie q_vector and vsi together */
5990         vsi->q_vectors[v_idx] = q_vector;
5991
5992         return 0;
5993 }
5994
5995 /**
5996  * i40e_alloc_q_vectors - Allocate memory for interrupt vectors
5997  * @vsi: the VSI being configured
5998  *
5999  * We allocate one q_vector per queue interrupt.  If allocation fails we
6000  * return -ENOMEM.
6001  **/
6002 static int i40e_alloc_q_vectors(struct i40e_vsi *vsi)
6003 {
6004         struct i40e_pf *pf = vsi->back;
6005         int v_idx, num_q_vectors;
6006         int err;
6007
6008         /* if not MSIX, give the one vector only to the LAN VSI */
6009         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6010                 num_q_vectors = vsi->num_q_vectors;
6011         else if (vsi == pf->vsi[pf->lan_vsi])
6012                 num_q_vectors = 1;
6013         else
6014                 return -EINVAL;
6015
6016         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
6017                 err = i40e_alloc_q_vector(vsi, v_idx);
6018                 if (err)
6019                         goto err_out;
6020         }
6021
6022         return 0;
6023
6024 err_out:
6025         while (v_idx--)
6026                 i40e_free_q_vector(vsi, v_idx);
6027
6028         return err;
6029 }
6030
6031 /**
6032  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
6033  * @pf: board private structure to initialize
6034  **/
6035 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
6036 {
6037         int err = 0;
6038
6039         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
6040                 err = i40e_init_msix(pf);
6041                 if (err) {
6042                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
6043                                        I40E_FLAG_RSS_ENABLED    |
6044                                        I40E_FLAG_DCB_ENABLED    |
6045                                        I40E_FLAG_SRIOV_ENABLED  |
6046                                        I40E_FLAG_FD_SB_ENABLED  |
6047                                        I40E_FLAG_FD_ATR_ENABLED |
6048                                        I40E_FLAG_VMDQ_ENABLED);
6049
6050                         /* rework the queue expectations without MSIX */
6051                         i40e_determine_queue_usage(pf);
6052                 }
6053         }
6054
6055         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
6056             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
6057                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
6058                 err = pci_enable_msi(pf->pdev);
6059                 if (err) {
6060                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
6061                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
6062                 }
6063         }
6064
6065         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
6066                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
6067
6068         /* track first vector for misc interrupts */
6069         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
6070 }
6071
6072 /**
6073  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
6074  * @pf: board private structure
6075  *
6076  * This sets up the handler for MSIX 0, which is used to manage the
6077  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
6078  * when in MSI or Legacy interrupt mode.
6079  **/
6080 static int i40e_setup_misc_vector(struct i40e_pf *pf)
6081 {
6082         struct i40e_hw *hw = &pf->hw;
6083         int err = 0;
6084
6085         /* Only request the irq if this is the first time through, and
6086          * not when we're rebuilding after a Reset
6087          */
6088         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6089                 err = request_irq(pf->msix_entries[0].vector,
6090                                   i40e_intr, 0, pf->misc_int_name, pf);
6091                 if (err) {
6092                         dev_info(&pf->pdev->dev,
6093                                  "request_irq for %s failed: %d\n",
6094                                  pf->misc_int_name, err);
6095                         return -EFAULT;
6096                 }
6097         }
6098
6099         i40e_enable_misc_int_causes(hw);
6100
6101         /* associate no queues to the misc vector */
6102         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
6103         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
6104
6105         i40e_flush(hw);
6106
6107         i40e_irq_dynamic_enable_icr0(pf);
6108
6109         return err;
6110 }
6111
6112 /**
6113  * i40e_config_rss - Prepare for RSS if used
6114  * @pf: board private structure
6115  **/
6116 static int i40e_config_rss(struct i40e_pf *pf)
6117 {
6118         /* Set of random keys generated using kernel random number generator */
6119         static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
6120                                 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
6121                                 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
6122                                 0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
6123         struct i40e_hw *hw = &pf->hw;
6124         u32 lut = 0;
6125         int i, j;
6126         u64 hena;
6127
6128         /* Fill out hash function seed */
6129         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
6130                 wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
6131
6132         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
6133         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
6134                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
6135         hena |= I40E_DEFAULT_RSS_HENA;
6136         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
6137         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
6138
6139         /* Populate the LUT with max no. of queues in round robin fashion */
6140         for (i = 0, j = 0; i < pf->hw.func_caps.rss_table_size; i++, j++) {
6141
6142                 /* The assumption is that lan qp count will be the highest
6143                  * qp count for any PF VSI that needs RSS.
6144                  * If multiple VSIs need RSS support, all the qp counts
6145                  * for those VSIs should be a power of 2 for RSS to work.
6146                  * If LAN VSI is the only consumer for RSS then this requirement
6147                  * is not necessary.
6148                  */
6149                 if (j == pf->rss_size)
6150                         j = 0;
6151                 /* lut = 4-byte sliding window of 4 lut entries */
6152                 lut = (lut << 8) | (j &
6153                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
6154                 /* On i = 3, we have 4 entries in lut; write to the register */
6155                 if ((i & 3) == 3)
6156                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
6157         }
6158         i40e_flush(hw);
6159
6160         return 0;
6161 }
6162
6163 /**
6164  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
6165  * @pf: board private structure
6166  * @queue_count: the requested queue count for rss.
6167  *
6168  * returns 0 if rss is not enabled, if enabled returns the final rss queue
6169  * count which may be different from the requested queue count.
6170  **/
6171 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
6172 {
6173         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
6174                 return 0;
6175
6176         queue_count = min_t(int, queue_count, pf->rss_size_max);
6177         queue_count = rounddown_pow_of_two(queue_count);
6178
6179         if (queue_count != pf->rss_size) {
6180                 i40e_prep_for_reset(pf);
6181
6182                 pf->rss_size = queue_count;
6183
6184                 i40e_reset_and_rebuild(pf, true);
6185                 i40e_config_rss(pf);
6186         }
6187         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
6188         return pf->rss_size;
6189 }
6190
6191 /**
6192  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
6193  * @pf: board private structure to initialize
6194  *
6195  * i40e_sw_init initializes the Adapter private data structure.
6196  * Fields are initialized based on PCI device information and
6197  * OS network device settings (MTU size).
6198  **/
6199 static int i40e_sw_init(struct i40e_pf *pf)
6200 {
6201         int err = 0;
6202         int size;
6203
6204         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
6205                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
6206         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
6207         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
6208                 if (I40E_DEBUG_USER & debug)
6209                         pf->hw.debug_mask = debug;
6210                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
6211                                                 I40E_DEFAULT_MSG_ENABLE);
6212         }
6213
6214         /* Set default capability flags */
6215         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
6216                     I40E_FLAG_MSI_ENABLED     |
6217                     I40E_FLAG_MSIX_ENABLED    |
6218                     I40E_FLAG_RX_1BUF_ENABLED;
6219
6220         /* Depending on PF configurations, it is possible that the RSS
6221          * maximum might end up larger than the available queues
6222          */
6223         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
6224         pf->rss_size_max = min_t(int, pf->rss_size_max,
6225                                  pf->hw.func_caps.num_tx_qp);
6226         if (pf->hw.func_caps.rss) {
6227                 pf->flags |= I40E_FLAG_RSS_ENABLED;
6228                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
6229                 pf->rss_size = rounddown_pow_of_two(pf->rss_size);
6230         } else {
6231                 pf->rss_size = 1;
6232         }
6233
6234         /* MFP mode enabled */
6235         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
6236                 pf->flags |= I40E_FLAG_MFP_ENABLED;
6237                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
6238         }
6239
6240         /* FW/NVM is not yet fixed in this regard */
6241         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
6242             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
6243                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6244                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
6245                 dev_info(&pf->pdev->dev,
6246                         "Flow Director ATR mode Enabled\n");
6247                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
6248                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
6249                         dev_info(&pf->pdev->dev,
6250                                  "Flow Director Side Band mode Enabled\n");
6251                 } else {
6252                         dev_info(&pf->pdev->dev,
6253                                  "Flow Director Side Band mode Disabled in MFP mode\n");
6254                 }
6255                 pf->fdir_pf_filter_count =
6256                                  pf->hw.func_caps.fd_filters_guaranteed;
6257                 pf->hw.fdir_shared_filter_count =
6258                                  pf->hw.func_caps.fd_filters_best_effort;
6259         }
6260
6261         if (pf->hw.func_caps.vmdq) {
6262                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
6263                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
6264                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
6265         }
6266
6267 #ifdef CONFIG_PCI_IOV
6268         if (pf->hw.func_caps.num_vfs) {
6269                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
6270                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
6271                 pf->num_req_vfs = min_t(int,
6272                                         pf->hw.func_caps.num_vfs,
6273                                         I40E_MAX_VF_COUNT);
6274                 dev_info(&pf->pdev->dev,
6275                          "Number of VFs being requested for PF[%d] = %d\n",
6276                          pf->hw.pf_id, pf->num_req_vfs);
6277         }
6278 #endif /* CONFIG_PCI_IOV */
6279         pf->eeprom_version = 0xDEAD;
6280         pf->lan_veb = I40E_NO_VEB;
6281         pf->lan_vsi = I40E_NO_VSI;
6282
6283         /* set up queue assignment tracking */
6284         size = sizeof(struct i40e_lump_tracking)
6285                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
6286         pf->qp_pile = kzalloc(size, GFP_KERNEL);
6287         if (!pf->qp_pile) {
6288                 err = -ENOMEM;
6289                 goto sw_init_done;
6290         }
6291         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
6292         pf->qp_pile->search_hint = 0;
6293
6294         /* set up vector assignment tracking */
6295         size = sizeof(struct i40e_lump_tracking)
6296                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
6297         pf->irq_pile = kzalloc(size, GFP_KERNEL);
6298         if (!pf->irq_pile) {
6299                 kfree(pf->qp_pile);
6300                 err = -ENOMEM;
6301                 goto sw_init_done;
6302         }
6303         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
6304         pf->irq_pile->search_hint = 0;
6305
6306         mutex_init(&pf->switch_mutex);
6307
6308 sw_init_done:
6309         return err;
6310 }
6311
6312 /**
6313  * i40e_set_features - set the netdev feature flags
6314  * @netdev: ptr to the netdev being adjusted
6315  * @features: the feature set that the stack is suggesting
6316  **/
6317 static int i40e_set_features(struct net_device *netdev,
6318                              netdev_features_t features)
6319 {
6320         struct i40e_netdev_priv *np = netdev_priv(netdev);
6321         struct i40e_vsi *vsi = np->vsi;
6322
6323         if (features & NETIF_F_HW_VLAN_CTAG_RX)
6324                 i40e_vlan_stripping_enable(vsi);
6325         else
6326                 i40e_vlan_stripping_disable(vsi);
6327
6328         return 0;
6329 }
6330
6331 #ifdef CONFIG_I40E_VXLAN
6332 /**
6333  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
6334  * @pf: board private structure
6335  * @port: The UDP port to look up
6336  *
6337  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
6338  **/
6339 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
6340 {
6341         u8 i;
6342
6343         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6344                 if (pf->vxlan_ports[i] == port)
6345                         return i;
6346         }
6347
6348         return i;
6349 }
6350
6351 /**
6352  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
6353  * @netdev: This physical port's netdev
6354  * @sa_family: Socket Family that VXLAN is notifying us about
6355  * @port: New UDP port number that VXLAN started listening to
6356  **/
6357 static void i40e_add_vxlan_port(struct net_device *netdev,
6358                                 sa_family_t sa_family, __be16 port)
6359 {
6360         struct i40e_netdev_priv *np = netdev_priv(netdev);
6361         struct i40e_vsi *vsi = np->vsi;
6362         struct i40e_pf *pf = vsi->back;
6363         u8 next_idx;
6364         u8 idx;
6365
6366         if (sa_family == AF_INET6)
6367                 return;
6368
6369         idx = i40e_get_vxlan_port_idx(pf, port);
6370
6371         /* Check if port already exists */
6372         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6373                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
6374                 return;
6375         }
6376
6377         /* Now check if there is space to add the new port */
6378         next_idx = i40e_get_vxlan_port_idx(pf, 0);
6379
6380         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6381                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
6382                             ntohs(port));
6383                 return;
6384         }
6385
6386         /* New port: add it and mark its index in the bitmap */
6387         pf->vxlan_ports[next_idx] = port;
6388         pf->pending_vxlan_bitmap |= (1 << next_idx);
6389
6390         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6391 }
6392
6393 /**
6394  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
6395  * @netdev: This physical port's netdev
6396  * @sa_family: Socket Family that VXLAN is notifying us about
6397  * @port: UDP port number that VXLAN stopped listening to
6398  **/
6399 static void i40e_del_vxlan_port(struct net_device *netdev,
6400                                 sa_family_t sa_family, __be16 port)
6401 {
6402         struct i40e_netdev_priv *np = netdev_priv(netdev);
6403         struct i40e_vsi *vsi = np->vsi;
6404         struct i40e_pf *pf = vsi->back;
6405         u8 idx;
6406
6407         if (sa_family == AF_INET6)
6408                 return;
6409
6410         idx = i40e_get_vxlan_port_idx(pf, port);
6411
6412         /* Check if port already exists */
6413         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6414                 /* if port exists, set it to 0 (mark for deletion)
6415                  * and make it pending
6416                  */
6417                 pf->vxlan_ports[idx] = 0;
6418
6419                 pf->pending_vxlan_bitmap |= (1 << idx);
6420
6421                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6422         } else {
6423                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
6424                             ntohs(port));
6425         }
6426 }
6427
6428 #endif
6429 static const struct net_device_ops i40e_netdev_ops = {
6430         .ndo_open               = i40e_open,
6431         .ndo_stop               = i40e_close,
6432         .ndo_start_xmit         = i40e_lan_xmit_frame,
6433         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
6434         .ndo_set_rx_mode        = i40e_set_rx_mode,
6435         .ndo_validate_addr      = eth_validate_addr,
6436         .ndo_set_mac_address    = i40e_set_mac,
6437         .ndo_change_mtu         = i40e_change_mtu,
6438         .ndo_do_ioctl           = i40e_ioctl,
6439         .ndo_tx_timeout         = i40e_tx_timeout,
6440         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
6441         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
6442 #ifdef CONFIG_NET_POLL_CONTROLLER
6443         .ndo_poll_controller    = i40e_netpoll,
6444 #endif
6445         .ndo_setup_tc           = i40e_setup_tc,
6446         .ndo_set_features       = i40e_set_features,
6447         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
6448         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
6449         .ndo_set_vf_tx_rate     = i40e_ndo_set_vf_bw,
6450         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
6451 #ifdef CONFIG_I40E_VXLAN
6452         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
6453         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
6454 #endif
6455 };
6456
6457 /**
6458  * i40e_config_netdev - Setup the netdev flags
6459  * @vsi: the VSI being configured
6460  *
6461  * Returns 0 on success, negative value on failure
6462  **/
6463 static int i40e_config_netdev(struct i40e_vsi *vsi)
6464 {
6465         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
6466         struct i40e_pf *pf = vsi->back;
6467         struct i40e_hw *hw = &pf->hw;
6468         struct i40e_netdev_priv *np;
6469         struct net_device *netdev;
6470         u8 mac_addr[ETH_ALEN];
6471         int etherdev_size;
6472
6473         etherdev_size = sizeof(struct i40e_netdev_priv);
6474         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
6475         if (!netdev)
6476                 return -ENOMEM;
6477
6478         vsi->netdev = netdev;
6479         np = netdev_priv(netdev);
6480         np->vsi = vsi;
6481
6482         netdev->hw_enc_features = NETIF_F_IP_CSUM        |
6483                                   NETIF_F_GSO_UDP_TUNNEL |
6484                                   NETIF_F_TSO            |
6485                                   NETIF_F_SG;
6486
6487         netdev->features = NETIF_F_SG                  |
6488                            NETIF_F_IP_CSUM             |
6489                            NETIF_F_SCTP_CSUM           |
6490                            NETIF_F_HIGHDMA             |
6491                            NETIF_F_GSO_UDP_TUNNEL      |
6492                            NETIF_F_HW_VLAN_CTAG_TX     |
6493                            NETIF_F_HW_VLAN_CTAG_RX     |
6494                            NETIF_F_HW_VLAN_CTAG_FILTER |
6495                            NETIF_F_IPV6_CSUM           |
6496                            NETIF_F_TSO                 |
6497                            NETIF_F_TSO6                |
6498                            NETIF_F_RXCSUM              |
6499                            NETIF_F_RXHASH              |
6500                            0;
6501
6502         /* copy netdev features into list of user selectable features */
6503         netdev->hw_features |= netdev->features;
6504
6505         if (vsi->type == I40E_VSI_MAIN) {
6506                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
6507                 memcpy(mac_addr, hw->mac.perm_addr, ETH_ALEN);
6508         } else {
6509                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
6510                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
6511                          pf->vsi[pf->lan_vsi]->netdev->name);
6512                 random_ether_addr(mac_addr);
6513                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
6514         }
6515         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
6516
6517         memcpy(netdev->dev_addr, mac_addr, ETH_ALEN);
6518         memcpy(netdev->perm_addr, mac_addr, ETH_ALEN);
6519         /* vlan gets same features (except vlan offload)
6520          * after any tweaks for specific VSI types
6521          */
6522         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
6523                                                      NETIF_F_HW_VLAN_CTAG_RX |
6524                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
6525         netdev->priv_flags |= IFF_UNICAST_FLT;
6526         netdev->priv_flags |= IFF_SUPP_NOFCS;
6527         /* Setup netdev TC information */
6528         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
6529
6530         netdev->netdev_ops = &i40e_netdev_ops;
6531         netdev->watchdog_timeo = 5 * HZ;
6532         i40e_set_ethtool_ops(netdev);
6533
6534         return 0;
6535 }
6536
6537 /**
6538  * i40e_vsi_delete - Delete a VSI from the switch
6539  * @vsi: the VSI being removed
6540  *
6541  * Returns 0 on success, negative value on failure
6542  **/
6543 static void i40e_vsi_delete(struct i40e_vsi *vsi)
6544 {
6545         /* remove default VSI is not allowed */
6546         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
6547                 return;
6548
6549         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
6550         return;
6551 }
6552
6553 /**
6554  * i40e_add_vsi - Add a VSI to the switch
6555  * @vsi: the VSI being configured
6556  *
6557  * This initializes a VSI context depending on the VSI type to be added and
6558  * passes it down to the add_vsi aq command.
6559  **/
6560 static int i40e_add_vsi(struct i40e_vsi *vsi)
6561 {
6562         int ret = -ENODEV;
6563         struct i40e_mac_filter *f, *ftmp;
6564         struct i40e_pf *pf = vsi->back;
6565         struct i40e_hw *hw = &pf->hw;
6566         struct i40e_vsi_context ctxt;
6567         u8 enabled_tc = 0x1; /* TC0 enabled */
6568         int f_count = 0;
6569
6570         memset(&ctxt, 0, sizeof(ctxt));
6571         switch (vsi->type) {
6572         case I40E_VSI_MAIN:
6573                 /* The PF's main VSI is already setup as part of the
6574                  * device initialization, so we'll not bother with
6575                  * the add_vsi call, but we will retrieve the current
6576                  * VSI context.
6577                  */
6578                 ctxt.seid = pf->main_vsi_seid;
6579                 ctxt.pf_num = pf->hw.pf_id;
6580                 ctxt.vf_num = 0;
6581                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6582                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6583                 if (ret) {
6584                         dev_info(&pf->pdev->dev,
6585                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
6586                                  ret, pf->hw.aq.asq_last_status);
6587                         return -ENOENT;
6588                 }
6589                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
6590                 vsi->info.valid_sections = 0;
6591
6592                 vsi->seid = ctxt.seid;
6593                 vsi->id = ctxt.vsi_number;
6594
6595                 enabled_tc = i40e_pf_get_tc_map(pf);
6596
6597                 /* MFP mode setup queue map and update VSI */
6598                 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
6599                         memset(&ctxt, 0, sizeof(ctxt));
6600                         ctxt.seid = pf->main_vsi_seid;
6601                         ctxt.pf_num = pf->hw.pf_id;
6602                         ctxt.vf_num = 0;
6603                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
6604                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
6605                         if (ret) {
6606                                 dev_info(&pf->pdev->dev,
6607                                          "update vsi failed, aq_err=%d\n",
6608                                          pf->hw.aq.asq_last_status);
6609                                 ret = -ENOENT;
6610                                 goto err;
6611                         }
6612                         /* update the local VSI info queue map */
6613                         i40e_vsi_update_queue_map(vsi, &ctxt);
6614                         vsi->info.valid_sections = 0;
6615                 } else {
6616                         /* Default/Main VSI is only enabled for TC0
6617                          * reconfigure it to enable all TCs that are
6618                          * available on the port in SFP mode.
6619                          */
6620                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
6621                         if (ret) {
6622                                 dev_info(&pf->pdev->dev,
6623                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
6624                                          enabled_tc, ret,
6625                                          pf->hw.aq.asq_last_status);
6626                                 ret = -ENOENT;
6627                         }
6628                 }
6629                 break;
6630
6631         case I40E_VSI_FDIR:
6632                 ctxt.pf_num = hw->pf_id;
6633                 ctxt.vf_num = 0;
6634                 ctxt.uplink_seid = vsi->uplink_seid;
6635                 ctxt.connection_type = 0x1;     /* regular data port */
6636                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6637                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6638                 break;
6639
6640         case I40E_VSI_VMDQ2:
6641                 ctxt.pf_num = hw->pf_id;
6642                 ctxt.vf_num = 0;
6643                 ctxt.uplink_seid = vsi->uplink_seid;
6644                 ctxt.connection_type = 0x1;     /* regular data port */
6645                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
6646
6647                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6648
6649                 /* This VSI is connected to VEB so the switch_id
6650                  * should be set to zero by default.
6651                  */
6652                 ctxt.info.switch_id = 0;
6653                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
6654                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6655
6656                 /* Setup the VSI tx/rx queue map for TC0 only for now */
6657                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6658                 break;
6659
6660         case I40E_VSI_SRIOV:
6661                 ctxt.pf_num = hw->pf_id;
6662                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
6663                 ctxt.uplink_seid = vsi->uplink_seid;
6664                 ctxt.connection_type = 0x1;     /* regular data port */
6665                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
6666
6667                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6668
6669                 /* This VSI is connected to VEB so the switch_id
6670                  * should be set to zero by default.
6671                  */
6672                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6673
6674                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
6675                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
6676                 /* Setup the VSI tx/rx queue map for TC0 only for now */
6677                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6678                 break;
6679
6680         default:
6681                 return -ENODEV;
6682         }
6683
6684         if (vsi->type != I40E_VSI_MAIN) {
6685                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
6686                 if (ret) {
6687                         dev_info(&vsi->back->pdev->dev,
6688                                  "add vsi failed, aq_err=%d\n",
6689                                  vsi->back->hw.aq.asq_last_status);
6690                         ret = -ENOENT;
6691                         goto err;
6692                 }
6693                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
6694                 vsi->info.valid_sections = 0;
6695                 vsi->seid = ctxt.seid;
6696                 vsi->id = ctxt.vsi_number;
6697         }
6698
6699         /* If macvlan filters already exist, force them to get loaded */
6700         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
6701                 f->changed = true;
6702                 f_count++;
6703         }
6704         if (f_count) {
6705                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
6706                 pf->flags |= I40E_FLAG_FILTER_SYNC;
6707         }
6708
6709         /* Update VSI BW information */
6710         ret = i40e_vsi_get_bw_info(vsi);
6711         if (ret) {
6712                 dev_info(&pf->pdev->dev,
6713                          "couldn't get vsi bw info, err %d, aq_err %d\n",
6714                          ret, pf->hw.aq.asq_last_status);
6715                 /* VSI is already added so not tearing that up */
6716                 ret = 0;
6717         }
6718
6719 err:
6720         return ret;
6721 }
6722
6723 /**
6724  * i40e_vsi_release - Delete a VSI and free its resources
6725  * @vsi: the VSI being removed
6726  *
6727  * Returns 0 on success or < 0 on error
6728  **/
6729 int i40e_vsi_release(struct i40e_vsi *vsi)
6730 {
6731         struct i40e_mac_filter *f, *ftmp;
6732         struct i40e_veb *veb = NULL;
6733         struct i40e_pf *pf;
6734         u16 uplink_seid;
6735         int i, n;
6736
6737         pf = vsi->back;
6738
6739         /* release of a VEB-owner or last VSI is not allowed */
6740         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
6741                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
6742                          vsi->seid, vsi->uplink_seid);
6743                 return -ENODEV;
6744         }
6745         if (vsi == pf->vsi[pf->lan_vsi] &&
6746             !test_bit(__I40E_DOWN, &pf->state)) {
6747                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
6748                 return -ENODEV;
6749         }
6750
6751         uplink_seid = vsi->uplink_seid;
6752         if (vsi->type != I40E_VSI_SRIOV) {
6753                 if (vsi->netdev_registered) {
6754                         vsi->netdev_registered = false;
6755                         if (vsi->netdev) {
6756                                 /* results in a call to i40e_close() */
6757                                 unregister_netdev(vsi->netdev);
6758                                 free_netdev(vsi->netdev);
6759                                 vsi->netdev = NULL;
6760                         }
6761                 } else {
6762                         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
6763                                 i40e_down(vsi);
6764                         i40e_vsi_free_irq(vsi);
6765                         i40e_vsi_free_tx_resources(vsi);
6766                         i40e_vsi_free_rx_resources(vsi);
6767                 }
6768                 i40e_vsi_disable_irq(vsi);
6769         }
6770
6771         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
6772                 i40e_del_filter(vsi, f->macaddr, f->vlan,
6773                                 f->is_vf, f->is_netdev);
6774         i40e_sync_vsi_filters(vsi);
6775
6776         i40e_vsi_delete(vsi);
6777         i40e_vsi_free_q_vectors(vsi);
6778         i40e_vsi_clear_rings(vsi);
6779         i40e_vsi_clear(vsi);
6780
6781         /* If this was the last thing on the VEB, except for the
6782          * controlling VSI, remove the VEB, which puts the controlling
6783          * VSI onto the next level down in the switch.
6784          *
6785          * Well, okay, there's one more exception here: don't remove
6786          * the orphan VEBs yet.  We'll wait for an explicit remove request
6787          * from up the network stack.
6788          */
6789         for (n = 0, i = 0; i < pf->hw.func_caps.num_vsis; i++) {
6790                 if (pf->vsi[i] &&
6791                     pf->vsi[i]->uplink_seid == uplink_seid &&
6792                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
6793                         n++;      /* count the VSIs */
6794                 }
6795         }
6796         for (i = 0; i < I40E_MAX_VEB; i++) {
6797                 if (!pf->veb[i])
6798                         continue;
6799                 if (pf->veb[i]->uplink_seid == uplink_seid)
6800                         n++;     /* count the VEBs */
6801                 if (pf->veb[i]->seid == uplink_seid)
6802                         veb = pf->veb[i];
6803         }
6804         if (n == 0 && veb && veb->uplink_seid != 0)
6805                 i40e_veb_release(veb);
6806
6807         return 0;
6808 }
6809
6810 /**
6811  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
6812  * @vsi: ptr to the VSI
6813  *
6814  * This should only be called after i40e_vsi_mem_alloc() which allocates the
6815  * corresponding SW VSI structure and initializes num_queue_pairs for the
6816  * newly allocated VSI.
6817  *
6818  * Returns 0 on success or negative on failure
6819  **/
6820 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
6821 {
6822         int ret = -ENOENT;
6823         struct i40e_pf *pf = vsi->back;
6824
6825         if (vsi->q_vectors[0]) {
6826                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
6827                          vsi->seid);
6828                 return -EEXIST;
6829         }
6830
6831         if (vsi->base_vector) {
6832                 dev_info(&pf->pdev->dev,
6833                          "VSI %d has non-zero base vector %d\n",
6834                          vsi->seid, vsi->base_vector);
6835                 return -EEXIST;
6836         }
6837
6838         ret = i40e_alloc_q_vectors(vsi);
6839         if (ret) {
6840                 dev_info(&pf->pdev->dev,
6841                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
6842                          vsi->num_q_vectors, vsi->seid, ret);
6843                 vsi->num_q_vectors = 0;
6844                 goto vector_setup_out;
6845         }
6846
6847         if (vsi->num_q_vectors)
6848                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
6849                                                  vsi->num_q_vectors, vsi->idx);
6850         if (vsi->base_vector < 0) {
6851                 dev_info(&pf->pdev->dev,
6852                          "failed to get q tracking for VSI %d, err=%d\n",
6853                          vsi->seid, vsi->base_vector);
6854                 i40e_vsi_free_q_vectors(vsi);
6855                 ret = -ENOENT;
6856                 goto vector_setup_out;
6857         }
6858
6859 vector_setup_out:
6860         return ret;
6861 }
6862
6863 /**
6864  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
6865  * @vsi: pointer to the vsi.
6866  *
6867  * This re-allocates a vsi's queue resources.
6868  *
6869  * Returns pointer to the successfully allocated and configured VSI sw struct
6870  * on success, otherwise returns NULL on failure.
6871  **/
6872 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
6873 {
6874         struct i40e_pf *pf = vsi->back;
6875         u8 enabled_tc;
6876         int ret;
6877
6878         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6879         i40e_vsi_clear_rings(vsi);
6880
6881         i40e_vsi_free_arrays(vsi, false);
6882         i40e_set_num_rings_in_vsi(vsi);
6883         ret = i40e_vsi_alloc_arrays(vsi, false);
6884         if (ret)
6885                 goto err_vsi;
6886
6887         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
6888         if (ret < 0) {
6889                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
6890                          vsi->seid, ret);
6891                 goto err_vsi;
6892         }
6893         vsi->base_queue = ret;
6894
6895         /* Update the FW view of the VSI. Force a reset of TC and queue
6896          * layout configurations.
6897          */
6898         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
6899         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
6900         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
6901         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
6902
6903         /* assign it some queues */
6904         ret = i40e_alloc_rings(vsi);
6905         if (ret)
6906                 goto err_rings;
6907
6908         /* map all of the rings to the q_vectors */
6909         i40e_vsi_map_rings_to_vectors(vsi);
6910         return vsi;
6911
6912 err_rings:
6913         i40e_vsi_free_q_vectors(vsi);
6914         if (vsi->netdev_registered) {
6915                 vsi->netdev_registered = false;
6916                 unregister_netdev(vsi->netdev);
6917                 free_netdev(vsi->netdev);
6918                 vsi->netdev = NULL;
6919         }
6920         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
6921 err_vsi:
6922         i40e_vsi_clear(vsi);
6923         return NULL;
6924 }
6925
6926 /**
6927  * i40e_vsi_setup - Set up a VSI by a given type
6928  * @pf: board private structure
6929  * @type: VSI type
6930  * @uplink_seid: the switch element to link to
6931  * @param1: usage depends upon VSI type. For VF types, indicates VF id
6932  *
6933  * This allocates the sw VSI structure and its queue resources, then add a VSI
6934  * to the identified VEB.
6935  *
6936  * Returns pointer to the successfully allocated and configure VSI sw struct on
6937  * success, otherwise returns NULL on failure.
6938  **/
6939 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
6940                                 u16 uplink_seid, u32 param1)
6941 {
6942         struct i40e_vsi *vsi = NULL;
6943         struct i40e_veb *veb = NULL;
6944         int ret, i;
6945         int v_idx;
6946
6947         /* The requested uplink_seid must be either
6948          *     - the PF's port seid
6949          *              no VEB is needed because this is the PF
6950          *              or this is a Flow Director special case VSI
6951          *     - seid of an existing VEB
6952          *     - seid of a VSI that owns an existing VEB
6953          *     - seid of a VSI that doesn't own a VEB
6954          *              a new VEB is created and the VSI becomes the owner
6955          *     - seid of the PF VSI, which is what creates the first VEB
6956          *              this is a special case of the previous
6957          *
6958          * Find which uplink_seid we were given and create a new VEB if needed
6959          */
6960         for (i = 0; i < I40E_MAX_VEB; i++) {
6961                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
6962                         veb = pf->veb[i];
6963                         break;
6964                 }
6965         }
6966
6967         if (!veb && uplink_seid != pf->mac_seid) {
6968
6969                 for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
6970                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
6971                                 vsi = pf->vsi[i];
6972                                 break;
6973                         }
6974                 }
6975                 if (!vsi) {
6976                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
6977                                  uplink_seid);
6978                         return NULL;
6979                 }
6980
6981                 if (vsi->uplink_seid == pf->mac_seid)
6982                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
6983                                              vsi->tc_config.enabled_tc);
6984                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
6985                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
6986                                              vsi->tc_config.enabled_tc);
6987
6988                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
6989                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
6990                                 veb = pf->veb[i];
6991                 }
6992                 if (!veb) {
6993                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
6994                         return NULL;
6995                 }
6996
6997                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
6998                 uplink_seid = veb->seid;
6999         }
7000
7001         /* get vsi sw struct */
7002         v_idx = i40e_vsi_mem_alloc(pf, type);
7003         if (v_idx < 0)
7004                 goto err_alloc;
7005         vsi = pf->vsi[v_idx];
7006         if (!vsi)
7007                 goto err_alloc;
7008         vsi->type = type;
7009         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
7010
7011         if (type == I40E_VSI_MAIN)
7012                 pf->lan_vsi = v_idx;
7013         else if (type == I40E_VSI_SRIOV)
7014                 vsi->vf_id = param1;
7015         /* assign it some queues */
7016         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
7017                                 vsi->idx);
7018         if (ret < 0) {
7019                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7020                          vsi->seid, ret);
7021                 goto err_vsi;
7022         }
7023         vsi->base_queue = ret;
7024
7025         /* get a VSI from the hardware */
7026         vsi->uplink_seid = uplink_seid;
7027         ret = i40e_add_vsi(vsi);
7028         if (ret)
7029                 goto err_vsi;
7030
7031         switch (vsi->type) {
7032         /* setup the netdev if needed */
7033         case I40E_VSI_MAIN:
7034         case I40E_VSI_VMDQ2:
7035                 ret = i40e_config_netdev(vsi);
7036                 if (ret)
7037                         goto err_netdev;
7038                 ret = register_netdev(vsi->netdev);
7039                 if (ret)
7040                         goto err_netdev;
7041                 vsi->netdev_registered = true;
7042                 netif_carrier_off(vsi->netdev);
7043 #ifdef CONFIG_I40E_DCB
7044                 /* Setup DCB netlink interface */
7045                 i40e_dcbnl_setup(vsi);
7046 #endif /* CONFIG_I40E_DCB */
7047                 /* fall through */
7048
7049         case I40E_VSI_FDIR:
7050                 /* set up vectors and rings if needed */
7051                 ret = i40e_vsi_setup_vectors(vsi);
7052                 if (ret)
7053                         goto err_msix;
7054
7055                 ret = i40e_alloc_rings(vsi);
7056                 if (ret)
7057                         goto err_rings;
7058
7059                 /* map all of the rings to the q_vectors */
7060                 i40e_vsi_map_rings_to_vectors(vsi);
7061
7062                 i40e_vsi_reset_stats(vsi);
7063                 break;
7064
7065         default:
7066                 /* no netdev or rings for the other VSI types */
7067                 break;
7068         }
7069
7070         return vsi;
7071
7072 err_rings:
7073         i40e_vsi_free_q_vectors(vsi);
7074 err_msix:
7075         if (vsi->netdev_registered) {
7076                 vsi->netdev_registered = false;
7077                 unregister_netdev(vsi->netdev);
7078                 free_netdev(vsi->netdev);
7079                 vsi->netdev = NULL;
7080         }
7081 err_netdev:
7082         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
7083 err_vsi:
7084         i40e_vsi_clear(vsi);
7085 err_alloc:
7086         return NULL;
7087 }
7088
7089 /**
7090  * i40e_veb_get_bw_info - Query VEB BW information
7091  * @veb: the veb to query
7092  *
7093  * Query the Tx scheduler BW configuration data for given VEB
7094  **/
7095 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
7096 {
7097         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
7098         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
7099         struct i40e_pf *pf = veb->pf;
7100         struct i40e_hw *hw = &pf->hw;
7101         u32 tc_bw_max;
7102         int ret = 0;
7103         int i;
7104
7105         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
7106                                                   &bw_data, NULL);
7107         if (ret) {
7108                 dev_info(&pf->pdev->dev,
7109                          "query veb bw config failed, aq_err=%d\n",
7110                          hw->aq.asq_last_status);
7111                 goto out;
7112         }
7113
7114         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
7115                                                    &ets_data, NULL);
7116         if (ret) {
7117                 dev_info(&pf->pdev->dev,
7118                          "query veb bw ets config failed, aq_err=%d\n",
7119                          hw->aq.asq_last_status);
7120                 goto out;
7121         }
7122
7123         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
7124         veb->bw_max_quanta = ets_data.tc_bw_max;
7125         veb->is_abs_credits = bw_data.absolute_credits_enable;
7126         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
7127                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
7128         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
7129                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
7130                 veb->bw_tc_limit_credits[i] =
7131                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
7132                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
7133         }
7134
7135 out:
7136         return ret;
7137 }
7138
7139 /**
7140  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
7141  * @pf: board private structure
7142  *
7143  * On error: returns error code (negative)
7144  * On success: returns vsi index in PF (positive)
7145  **/
7146 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
7147 {
7148         int ret = -ENOENT;
7149         struct i40e_veb *veb;
7150         int i;
7151
7152         /* Need to protect the allocation of switch elements at the PF level */
7153         mutex_lock(&pf->switch_mutex);
7154
7155         /* VEB list may be fragmented if VEB creation/destruction has
7156          * been happening.  We can afford to do a quick scan to look
7157          * for any free slots in the list.
7158          *
7159          * find next empty veb slot, looping back around if necessary
7160          */
7161         i = 0;
7162         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
7163                 i++;
7164         if (i >= I40E_MAX_VEB) {
7165                 ret = -ENOMEM;
7166                 goto err_alloc_veb;  /* out of VEB slots! */
7167         }
7168
7169         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
7170         if (!veb) {
7171                 ret = -ENOMEM;
7172                 goto err_alloc_veb;
7173         }
7174         veb->pf = pf;
7175         veb->idx = i;
7176         veb->enabled_tc = 1;
7177
7178         pf->veb[i] = veb;
7179         ret = i;
7180 err_alloc_veb:
7181         mutex_unlock(&pf->switch_mutex);
7182         return ret;
7183 }
7184
7185 /**
7186  * i40e_switch_branch_release - Delete a branch of the switch tree
7187  * @branch: where to start deleting
7188  *
7189  * This uses recursion to find the tips of the branch to be
7190  * removed, deleting until we get back to and can delete this VEB.
7191  **/
7192 static void i40e_switch_branch_release(struct i40e_veb *branch)
7193 {
7194         struct i40e_pf *pf = branch->pf;
7195         u16 branch_seid = branch->seid;
7196         u16 veb_idx = branch->idx;
7197         int i;
7198
7199         /* release any VEBs on this VEB - RECURSION */
7200         for (i = 0; i < I40E_MAX_VEB; i++) {
7201                 if (!pf->veb[i])
7202                         continue;
7203                 if (pf->veb[i]->uplink_seid == branch->seid)
7204                         i40e_switch_branch_release(pf->veb[i]);
7205         }
7206
7207         /* Release the VSIs on this VEB, but not the owner VSI.
7208          *
7209          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
7210          *       the VEB itself, so don't use (*branch) after this loop.
7211          */
7212         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7213                 if (!pf->vsi[i])
7214                         continue;
7215                 if (pf->vsi[i]->uplink_seid == branch_seid &&
7216                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7217                         i40e_vsi_release(pf->vsi[i]);
7218                 }
7219         }
7220
7221         /* There's one corner case where the VEB might not have been
7222          * removed, so double check it here and remove it if needed.
7223          * This case happens if the veb was created from the debugfs
7224          * commands and no VSIs were added to it.
7225          */
7226         if (pf->veb[veb_idx])
7227                 i40e_veb_release(pf->veb[veb_idx]);
7228 }
7229
7230 /**
7231  * i40e_veb_clear - remove veb struct
7232  * @veb: the veb to remove
7233  **/
7234 static void i40e_veb_clear(struct i40e_veb *veb)
7235 {
7236         if (!veb)
7237                 return;
7238
7239         if (veb->pf) {
7240                 struct i40e_pf *pf = veb->pf;
7241
7242                 mutex_lock(&pf->switch_mutex);
7243                 if (pf->veb[veb->idx] == veb)
7244                         pf->veb[veb->idx] = NULL;
7245                 mutex_unlock(&pf->switch_mutex);
7246         }
7247
7248         kfree(veb);
7249 }
7250
7251 /**
7252  * i40e_veb_release - Delete a VEB and free its resources
7253  * @veb: the VEB being removed
7254  **/
7255 void i40e_veb_release(struct i40e_veb *veb)
7256 {
7257         struct i40e_vsi *vsi = NULL;
7258         struct i40e_pf *pf;
7259         int i, n = 0;
7260
7261         pf = veb->pf;
7262
7263         /* find the remaining VSI and check for extras */
7264         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7265                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
7266                         n++;
7267                         vsi = pf->vsi[i];
7268                 }
7269         }
7270         if (n != 1) {
7271                 dev_info(&pf->pdev->dev,
7272                          "can't remove VEB %d with %d VSIs left\n",
7273                          veb->seid, n);
7274                 return;
7275         }
7276
7277         /* move the remaining VSI to uplink veb */
7278         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
7279         if (veb->uplink_seid) {
7280                 vsi->uplink_seid = veb->uplink_seid;
7281                 if (veb->uplink_seid == pf->mac_seid)
7282                         vsi->veb_idx = I40E_NO_VEB;
7283                 else
7284                         vsi->veb_idx = veb->veb_idx;
7285         } else {
7286                 /* floating VEB */
7287                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
7288                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
7289         }
7290
7291         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
7292         i40e_veb_clear(veb);
7293
7294         return;
7295 }
7296
7297 /**
7298  * i40e_add_veb - create the VEB in the switch
7299  * @veb: the VEB to be instantiated
7300  * @vsi: the controlling VSI
7301  **/
7302 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
7303 {
7304         bool is_default = false;
7305         bool is_cloud = false;
7306         int ret;
7307
7308         /* get a VEB from the hardware */
7309         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
7310                               veb->enabled_tc, is_default,
7311                               is_cloud, &veb->seid, NULL);
7312         if (ret) {
7313                 dev_info(&veb->pf->pdev->dev,
7314                          "couldn't add VEB, err %d, aq_err %d\n",
7315                          ret, veb->pf->hw.aq.asq_last_status);
7316                 return -EPERM;
7317         }
7318
7319         /* get statistics counter */
7320         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
7321                                          &veb->stats_idx, NULL, NULL, NULL);
7322         if (ret) {
7323                 dev_info(&veb->pf->pdev->dev,
7324                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
7325                          ret, veb->pf->hw.aq.asq_last_status);
7326                 return -EPERM;
7327         }
7328         ret = i40e_veb_get_bw_info(veb);
7329         if (ret) {
7330                 dev_info(&veb->pf->pdev->dev,
7331                          "couldn't get VEB bw info, err %d, aq_err %d\n",
7332                          ret, veb->pf->hw.aq.asq_last_status);
7333                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
7334                 return -ENOENT;
7335         }
7336
7337         vsi->uplink_seid = veb->seid;
7338         vsi->veb_idx = veb->idx;
7339         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
7340
7341         return 0;
7342 }
7343
7344 /**
7345  * i40e_veb_setup - Set up a VEB
7346  * @pf: board private structure
7347  * @flags: VEB setup flags
7348  * @uplink_seid: the switch element to link to
7349  * @vsi_seid: the initial VSI seid
7350  * @enabled_tc: Enabled TC bit-map
7351  *
7352  * This allocates the sw VEB structure and links it into the switch
7353  * It is possible and legal for this to be a duplicate of an already
7354  * existing VEB.  It is also possible for both uplink and vsi seids
7355  * to be zero, in order to create a floating VEB.
7356  *
7357  * Returns pointer to the successfully allocated VEB sw struct on
7358  * success, otherwise returns NULL on failure.
7359  **/
7360 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
7361                                 u16 uplink_seid, u16 vsi_seid,
7362                                 u8 enabled_tc)
7363 {
7364         struct i40e_veb *veb, *uplink_veb = NULL;
7365         int vsi_idx, veb_idx;
7366         int ret;
7367
7368         /* if one seid is 0, the other must be 0 to create a floating relay */
7369         if ((uplink_seid == 0 || vsi_seid == 0) &&
7370             (uplink_seid + vsi_seid != 0)) {
7371                 dev_info(&pf->pdev->dev,
7372                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
7373                          uplink_seid, vsi_seid);
7374                 return NULL;
7375         }
7376
7377         /* make sure there is such a vsi and uplink */
7378         for (vsi_idx = 0; vsi_idx < pf->hw.func_caps.num_vsis; vsi_idx++)
7379                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
7380                         break;
7381         if (vsi_idx >= pf->hw.func_caps.num_vsis && vsi_seid != 0) {
7382                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
7383                          vsi_seid);
7384                 return NULL;
7385         }
7386
7387         if (uplink_seid && uplink_seid != pf->mac_seid) {
7388                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
7389                         if (pf->veb[veb_idx] &&
7390                             pf->veb[veb_idx]->seid == uplink_seid) {
7391                                 uplink_veb = pf->veb[veb_idx];
7392                                 break;
7393                         }
7394                 }
7395                 if (!uplink_veb) {
7396                         dev_info(&pf->pdev->dev,
7397                                  "uplink seid %d not found\n", uplink_seid);
7398                         return NULL;
7399                 }
7400         }
7401
7402         /* get veb sw struct */
7403         veb_idx = i40e_veb_mem_alloc(pf);
7404         if (veb_idx < 0)
7405                 goto err_alloc;
7406         veb = pf->veb[veb_idx];
7407         veb->flags = flags;
7408         veb->uplink_seid = uplink_seid;
7409         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
7410         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
7411
7412         /* create the VEB in the switch */
7413         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
7414         if (ret)
7415                 goto err_veb;
7416
7417         return veb;
7418
7419 err_veb:
7420         i40e_veb_clear(veb);
7421 err_alloc:
7422         return NULL;
7423 }
7424
7425 /**
7426  * i40e_setup_pf_switch_element - set pf vars based on switch type
7427  * @pf: board private structure
7428  * @ele: element we are building info from
7429  * @num_reported: total number of elements
7430  * @printconfig: should we print the contents
7431  *
7432  * helper function to assist in extracting a few useful SEID values.
7433  **/
7434 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
7435                                 struct i40e_aqc_switch_config_element_resp *ele,
7436                                 u16 num_reported, bool printconfig)
7437 {
7438         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
7439         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
7440         u8 element_type = ele->element_type;
7441         u16 seid = le16_to_cpu(ele->seid);
7442
7443         if (printconfig)
7444                 dev_info(&pf->pdev->dev,
7445                          "type=%d seid=%d uplink=%d downlink=%d\n",
7446                          element_type, seid, uplink_seid, downlink_seid);
7447
7448         switch (element_type) {
7449         case I40E_SWITCH_ELEMENT_TYPE_MAC:
7450                 pf->mac_seid = seid;
7451                 break;
7452         case I40E_SWITCH_ELEMENT_TYPE_VEB:
7453                 /* Main VEB? */
7454                 if (uplink_seid != pf->mac_seid)
7455                         break;
7456                 if (pf->lan_veb == I40E_NO_VEB) {
7457                         int v;
7458
7459                         /* find existing or else empty VEB */
7460                         for (v = 0; v < I40E_MAX_VEB; v++) {
7461                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
7462                                         pf->lan_veb = v;
7463                                         break;
7464                                 }
7465                         }
7466                         if (pf->lan_veb == I40E_NO_VEB) {
7467                                 v = i40e_veb_mem_alloc(pf);
7468                                 if (v < 0)
7469                                         break;
7470                                 pf->lan_veb = v;
7471                         }
7472                 }
7473
7474                 pf->veb[pf->lan_veb]->seid = seid;
7475                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
7476                 pf->veb[pf->lan_veb]->pf = pf;
7477                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
7478                 break;
7479         case I40E_SWITCH_ELEMENT_TYPE_VSI:
7480                 if (num_reported != 1)
7481                         break;
7482                 /* This is immediately after a reset so we can assume this is
7483                  * the PF's VSI
7484                  */
7485                 pf->mac_seid = uplink_seid;
7486                 pf->pf_seid = downlink_seid;
7487                 pf->main_vsi_seid = seid;
7488                 if (printconfig)
7489                         dev_info(&pf->pdev->dev,
7490                                  "pf_seid=%d main_vsi_seid=%d\n",
7491                                  pf->pf_seid, pf->main_vsi_seid);
7492                 break;
7493         case I40E_SWITCH_ELEMENT_TYPE_PF:
7494         case I40E_SWITCH_ELEMENT_TYPE_VF:
7495         case I40E_SWITCH_ELEMENT_TYPE_EMP:
7496         case I40E_SWITCH_ELEMENT_TYPE_BMC:
7497         case I40E_SWITCH_ELEMENT_TYPE_PE:
7498         case I40E_SWITCH_ELEMENT_TYPE_PA:
7499                 /* ignore these for now */
7500                 break;
7501         default:
7502                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
7503                          element_type, seid);
7504                 break;
7505         }
7506 }
7507
7508 /**
7509  * i40e_fetch_switch_configuration - Get switch config from firmware
7510  * @pf: board private structure
7511  * @printconfig: should we print the contents
7512  *
7513  * Get the current switch configuration from the device and
7514  * extract a few useful SEID values.
7515  **/
7516 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
7517 {
7518         struct i40e_aqc_get_switch_config_resp *sw_config;
7519         u16 next_seid = 0;
7520         int ret = 0;
7521         u8 *aq_buf;
7522         int i;
7523
7524         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
7525         if (!aq_buf)
7526                 return -ENOMEM;
7527
7528         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
7529         do {
7530                 u16 num_reported, num_total;
7531
7532                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
7533                                                 I40E_AQ_LARGE_BUF,
7534                                                 &next_seid, NULL);
7535                 if (ret) {
7536                         dev_info(&pf->pdev->dev,
7537                                  "get switch config failed %d aq_err=%x\n",
7538                                  ret, pf->hw.aq.asq_last_status);
7539                         kfree(aq_buf);
7540                         return -ENOENT;
7541                 }
7542
7543                 num_reported = le16_to_cpu(sw_config->header.num_reported);
7544                 num_total = le16_to_cpu(sw_config->header.num_total);
7545
7546                 if (printconfig)
7547                         dev_info(&pf->pdev->dev,
7548                                  "header: %d reported %d total\n",
7549                                  num_reported, num_total);
7550
7551                 if (num_reported) {
7552                         int sz = sizeof(*sw_config) * num_reported;
7553
7554                         kfree(pf->sw_config);
7555                         pf->sw_config = kzalloc(sz, GFP_KERNEL);
7556                         if (pf->sw_config)
7557                                 memcpy(pf->sw_config, sw_config, sz);
7558                 }
7559
7560                 for (i = 0; i < num_reported; i++) {
7561                         struct i40e_aqc_switch_config_element_resp *ele =
7562                                 &sw_config->element[i];
7563
7564                         i40e_setup_pf_switch_element(pf, ele, num_reported,
7565                                                      printconfig);
7566                 }
7567         } while (next_seid != 0);
7568
7569         kfree(aq_buf);
7570         return ret;
7571 }
7572
7573 /**
7574  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
7575  * @pf: board private structure
7576  * @reinit: if the Main VSI needs to re-initialized.
7577  *
7578  * Returns 0 on success, negative value on failure
7579  **/
7580 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
7581 {
7582         u32 rxfc = 0, txfc = 0, rxfc_reg;
7583         int ret;
7584
7585         /* find out what's out there already */
7586         ret = i40e_fetch_switch_configuration(pf, false);
7587         if (ret) {
7588                 dev_info(&pf->pdev->dev,
7589                          "couldn't fetch switch config, err %d, aq_err %d\n",
7590                          ret, pf->hw.aq.asq_last_status);
7591                 return ret;
7592         }
7593         i40e_pf_reset_stats(pf);
7594
7595         /* first time setup */
7596         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
7597                 struct i40e_vsi *vsi = NULL;
7598                 u16 uplink_seid;
7599
7600                 /* Set up the PF VSI associated with the PF's main VSI
7601                  * that is already in the HW switch
7602                  */
7603                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
7604                         uplink_seid = pf->veb[pf->lan_veb]->seid;
7605                 else
7606                         uplink_seid = pf->mac_seid;
7607                 if (pf->lan_vsi == I40E_NO_VSI)
7608                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
7609                 else if (reinit)
7610                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
7611                 if (!vsi) {
7612                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
7613                         i40e_fdir_teardown(pf);
7614                         return -EAGAIN;
7615                 }
7616         } else {
7617                 /* force a reset of TC and queue layout configurations */
7618                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
7619                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
7620                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
7621                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
7622         }
7623         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
7624
7625         i40e_fdir_sb_setup(pf);
7626
7627         /* Setup static PF queue filter control settings */
7628         ret = i40e_setup_pf_filter_control(pf);
7629         if (ret) {
7630                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
7631                          ret);
7632                 /* Failure here should not stop continuing other steps */
7633         }
7634
7635         /* enable RSS in the HW, even for only one queue, as the stack can use
7636          * the hash
7637          */
7638         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
7639                 i40e_config_rss(pf);
7640
7641         /* fill in link information and enable LSE reporting */
7642         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
7643         i40e_link_event(pf);
7644
7645         /* Initialize user-specific link properties */
7646         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
7647                                   I40E_AQ_AN_COMPLETED) ? true : false);
7648         /* requested_mode is set in probe or by ethtool */
7649         if (!pf->fc_autoneg_status)
7650                 goto no_autoneg;
7651
7652         if ((pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX) &&
7653             (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX))
7654                 pf->hw.fc.current_mode = I40E_FC_FULL;
7655         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX)
7656                 pf->hw.fc.current_mode = I40E_FC_TX_PAUSE;
7657         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX)
7658                 pf->hw.fc.current_mode = I40E_FC_RX_PAUSE;
7659         else
7660                 pf->hw.fc.current_mode = I40E_FC_NONE;
7661
7662         /* sync the flow control settings with the auto-neg values */
7663         switch (pf->hw.fc.current_mode) {
7664         case I40E_FC_FULL:
7665                 txfc = 1;
7666                 rxfc = 1;
7667                 break;
7668         case I40E_FC_TX_PAUSE:
7669                 txfc = 1;
7670                 rxfc = 0;
7671                 break;
7672         case I40E_FC_RX_PAUSE:
7673                 txfc = 0;
7674                 rxfc = 1;
7675                 break;
7676         case I40E_FC_NONE:
7677         case I40E_FC_DEFAULT:
7678                 txfc = 0;
7679                 rxfc = 0;
7680                 break;
7681         case I40E_FC_PFC:
7682                 /* TBD */
7683                 break;
7684         /* no default case, we have to handle all possibilities here */
7685         }
7686
7687         wr32(&pf->hw, I40E_PRTDCB_FCCFG, txfc << I40E_PRTDCB_FCCFG_TFCE_SHIFT);
7688
7689         rxfc_reg = rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
7690                    ~I40E_PRTDCB_MFLCN_RFCE_MASK;
7691         rxfc_reg |= (rxfc << I40E_PRTDCB_MFLCN_RFCE_SHIFT);
7692
7693         wr32(&pf->hw, I40E_PRTDCB_MFLCN, rxfc_reg);
7694
7695         goto fc_complete;
7696
7697 no_autoneg:
7698         /* disable L2 flow control, user can turn it on if they wish */
7699         wr32(&pf->hw, I40E_PRTDCB_FCCFG, 0);
7700         wr32(&pf->hw, I40E_PRTDCB_MFLCN, rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
7701                                          ~I40E_PRTDCB_MFLCN_RFCE_MASK);
7702
7703 fc_complete:
7704         i40e_ptp_init(pf);
7705
7706         return ret;
7707 }
7708
7709 /**
7710  * i40e_determine_queue_usage - Work out queue distribution
7711  * @pf: board private structure
7712  **/
7713 static void i40e_determine_queue_usage(struct i40e_pf *pf)
7714 {
7715         int queues_left;
7716
7717         pf->num_lan_qps = 0;
7718
7719         /* Find the max queues to be put into basic use.  We'll always be
7720          * using TC0, whether or not DCB is running, and TC0 will get the
7721          * big RSS set.
7722          */
7723         queues_left = pf->hw.func_caps.num_tx_qp;
7724
7725         if ((queues_left == 1) ||
7726             !(pf->flags & I40E_FLAG_MSIX_ENABLED) ||
7727             !(pf->flags & (I40E_FLAG_RSS_ENABLED | I40E_FLAG_FD_SB_ENABLED |
7728                            I40E_FLAG_DCB_ENABLED))) {
7729                 /* one qp for PF, no queues for anything else */
7730                 queues_left = 0;
7731                 pf->rss_size = pf->num_lan_qps = 1;
7732
7733                 /* make sure all the fancies are disabled */
7734                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
7735                                I40E_FLAG_FD_SB_ENABLED  |
7736                                I40E_FLAG_FD_ATR_ENABLED |
7737                                I40E_FLAG_DCB_ENABLED    |
7738                                I40E_FLAG_SRIOV_ENABLED  |
7739                                I40E_FLAG_VMDQ_ENABLED);
7740         } else {
7741                 /* Not enough queues for all TCs */
7742                 if ((pf->flags & I40E_FLAG_DCB_ENABLED) &&
7743                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
7744                         pf->flags &= ~I40E_FLAG_DCB_ENABLED;
7745                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
7746                 }
7747                 pf->num_lan_qps = pf->rss_size_max;
7748                 queues_left -= pf->num_lan_qps;
7749         }
7750
7751         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7752                 if (queues_left > 1) {
7753                         queues_left -= 1; /* save 1 queue for FD */
7754                 } else {
7755                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7756                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
7757                 }
7758         }
7759
7760         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
7761             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
7762                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
7763                                         (queues_left / pf->num_vf_qps));
7764                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
7765         }
7766
7767         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7768             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
7769                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
7770                                           (queues_left / pf->num_vmdq_qps));
7771                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
7772         }
7773
7774         pf->queues_left = queues_left;
7775         return;
7776 }
7777
7778 /**
7779  * i40e_setup_pf_filter_control - Setup PF static filter control
7780  * @pf: PF to be setup
7781  *
7782  * i40e_setup_pf_filter_control sets up a pf's initial filter control
7783  * settings. If PE/FCoE are enabled then it will also set the per PF
7784  * based filter sizes required for them. It also enables Flow director,
7785  * ethertype and macvlan type filter settings for the pf.
7786  *
7787  * Returns 0 on success, negative on failure
7788  **/
7789 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
7790 {
7791         struct i40e_filter_control_settings *settings = &pf->filter_settings;
7792
7793         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
7794
7795         /* Flow Director is enabled */
7796         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
7797                 settings->enable_fdir = true;
7798
7799         /* Ethtype and MACVLAN filters enabled for PF */
7800         settings->enable_ethtype = true;
7801         settings->enable_macvlan = true;
7802
7803         if (i40e_set_filter_control(&pf->hw, settings))
7804                 return -ENOENT;
7805
7806         return 0;
7807 }
7808
7809 /**
7810  * i40e_probe - Device initialization routine
7811  * @pdev: PCI device information struct
7812  * @ent: entry in i40e_pci_tbl
7813  *
7814  * i40e_probe initializes a pf identified by a pci_dev structure.
7815  * The OS initialization, configuring of the pf private structure,
7816  * and a hardware reset occur.
7817  *
7818  * Returns 0 on success, negative on failure
7819  **/
7820 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
7821 {
7822         struct i40e_driver_version dv;
7823         struct i40e_pf *pf;
7824         struct i40e_hw *hw;
7825         static u16 pfs_found;
7826         u16 link_status;
7827         int err = 0;
7828         u32 len;
7829
7830         err = pci_enable_device_mem(pdev);
7831         if (err)
7832                 return err;
7833
7834         /* set up for high or low dma */
7835         if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
7836                 /* coherent mask for the same size will always succeed if
7837                  * dma_set_mask does
7838                  */
7839                 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
7840         } else if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
7841                 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
7842         } else {
7843                 dev_err(&pdev->dev, "DMA configuration failed: %d\n", err);
7844                 err = -EIO;
7845                 goto err_dma;
7846         }
7847
7848         /* set up pci connections */
7849         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
7850                                            IORESOURCE_MEM), i40e_driver_name);
7851         if (err) {
7852                 dev_info(&pdev->dev,
7853                          "pci_request_selected_regions failed %d\n", err);
7854                 goto err_pci_reg;
7855         }
7856
7857         pci_enable_pcie_error_reporting(pdev);
7858         pci_set_master(pdev);
7859
7860         /* Now that we have a PCI connection, we need to do the
7861          * low level device setup.  This is primarily setting up
7862          * the Admin Queue structures and then querying for the
7863          * device's current profile information.
7864          */
7865         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
7866         if (!pf) {
7867                 err = -ENOMEM;
7868                 goto err_pf_alloc;
7869         }
7870         pf->next_vsi = 0;
7871         pf->pdev = pdev;
7872         set_bit(__I40E_DOWN, &pf->state);
7873
7874         hw = &pf->hw;
7875         hw->back = pf;
7876         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
7877                               pci_resource_len(pdev, 0));
7878         if (!hw->hw_addr) {
7879                 err = -EIO;
7880                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
7881                          (unsigned int)pci_resource_start(pdev, 0),
7882                          (unsigned int)pci_resource_len(pdev, 0), err);
7883                 goto err_ioremap;
7884         }
7885         hw->vendor_id = pdev->vendor;
7886         hw->device_id = pdev->device;
7887         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
7888         hw->subsystem_vendor_id = pdev->subsystem_vendor;
7889         hw->subsystem_device_id = pdev->subsystem_device;
7890         hw->bus.device = PCI_SLOT(pdev->devfn);
7891         hw->bus.func = PCI_FUNC(pdev->devfn);
7892         pf->instance = pfs_found;
7893
7894         /* do a special CORER for clearing PXE mode once at init */
7895         if (hw->revision_id == 0 &&
7896             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
7897                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
7898                 i40e_flush(hw);
7899                 msleep(200);
7900                 pf->corer_count++;
7901
7902                 i40e_clear_pxe_mode(hw);
7903         }
7904
7905         /* Reset here to make sure all is clean and to define PF 'n' */
7906         err = i40e_pf_reset(hw);
7907         if (err) {
7908                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
7909                 goto err_pf_reset;
7910         }
7911         pf->pfr_count++;
7912
7913         hw->aq.num_arq_entries = I40E_AQ_LEN;
7914         hw->aq.num_asq_entries = I40E_AQ_LEN;
7915         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
7916         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
7917         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
7918         snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
7919                  "%s-pf%d:misc",
7920                  dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
7921
7922         err = i40e_init_shared_code(hw);
7923         if (err) {
7924                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
7925                 goto err_pf_reset;
7926         }
7927
7928         /* set up a default setting for link flow control */
7929         pf->hw.fc.requested_mode = I40E_FC_NONE;
7930
7931         err = i40e_init_adminq(hw);
7932         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
7933         if (((hw->nvm.version & I40E_NVM_VERSION_HI_MASK)
7934                  >> I40E_NVM_VERSION_HI_SHIFT) != I40E_CURRENT_NVM_VERSION_HI) {
7935                 dev_info(&pdev->dev,
7936                          "warning: NVM version not supported, supported version: %02x.%02x\n",
7937                          I40E_CURRENT_NVM_VERSION_HI,
7938                          I40E_CURRENT_NVM_VERSION_LO);
7939         }
7940         if (err) {
7941                 dev_info(&pdev->dev,
7942                          "init_adminq failed: %d expecting API %02x.%02x\n",
7943                          err,
7944                          I40E_FW_API_VERSION_MAJOR, I40E_FW_API_VERSION_MINOR);
7945                 goto err_pf_reset;
7946         }
7947
7948         i40e_clear_pxe_mode(hw);
7949         err = i40e_get_capabilities(pf);
7950         if (err)
7951                 goto err_adminq_setup;
7952
7953         err = i40e_sw_init(pf);
7954         if (err) {
7955                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
7956                 goto err_sw_init;
7957         }
7958
7959         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
7960                                 hw->func_caps.num_rx_qp,
7961                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
7962         if (err) {
7963                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
7964                 goto err_init_lan_hmc;
7965         }
7966
7967         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
7968         if (err) {
7969                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
7970                 err = -ENOENT;
7971                 goto err_configure_lan_hmc;
7972         }
7973
7974         i40e_get_mac_addr(hw, hw->mac.addr);
7975         if (!is_valid_ether_addr(hw->mac.addr)) {
7976                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
7977                 err = -EIO;
7978                 goto err_mac_addr;
7979         }
7980         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
7981         memcpy(hw->mac.perm_addr, hw->mac.addr, ETH_ALEN);
7982
7983         pci_set_drvdata(pdev, pf);
7984         pci_save_state(pdev);
7985 #ifdef CONFIG_I40E_DCB
7986         err = i40e_init_pf_dcb(pf);
7987         if (err) {
7988                 dev_info(&pdev->dev, "init_pf_dcb failed: %d\n", err);
7989                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
7990                 goto err_init_dcb;
7991         }
7992 #endif /* CONFIG_I40E_DCB */
7993
7994         /* set up periodic task facility */
7995         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
7996         pf->service_timer_period = HZ;
7997
7998         INIT_WORK(&pf->service_task, i40e_service_task);
7999         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
8000         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
8001         pf->link_check_timeout = jiffies;
8002
8003         /* WoL defaults to disabled */
8004         pf->wol_en = false;
8005         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
8006
8007         /* set up the main switch operations */
8008         i40e_determine_queue_usage(pf);
8009         i40e_init_interrupt_scheme(pf);
8010
8011         /* Set up the *vsi struct based on the number of VSIs in the HW,
8012          * and set up our local tracking of the MAIN PF vsi.
8013          */
8014         len = sizeof(struct i40e_vsi *) * pf->hw.func_caps.num_vsis;
8015         pf->vsi = kzalloc(len, GFP_KERNEL);
8016         if (!pf->vsi) {
8017                 err = -ENOMEM;
8018                 goto err_switch_setup;
8019         }
8020
8021         err = i40e_setup_pf_switch(pf, false);
8022         if (err) {
8023                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
8024                 goto err_vsis;
8025         }
8026
8027         /* The main driver is (mostly) up and happy. We need to set this state
8028          * before setting up the misc vector or we get a race and the vector
8029          * ends up disabled forever.
8030          */
8031         clear_bit(__I40E_DOWN, &pf->state);
8032
8033         /* In case of MSIX we are going to setup the misc vector right here
8034          * to handle admin queue events etc. In case of legacy and MSI
8035          * the misc functionality and queue processing is combined in
8036          * the same vector and that gets setup at open.
8037          */
8038         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8039                 err = i40e_setup_misc_vector(pf);
8040                 if (err) {
8041                         dev_info(&pdev->dev,
8042                                  "setup of misc vector failed: %d\n", err);
8043                         goto err_vsis;
8044                 }
8045         }
8046
8047         /* prep for VF support */
8048         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8049             (pf->flags & I40E_FLAG_MSIX_ENABLED)) {
8050                 u32 val;
8051
8052                 /* disable link interrupts for VFs */
8053                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
8054                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
8055                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
8056                 i40e_flush(hw);
8057
8058                 if (pci_num_vf(pdev)) {
8059                         dev_info(&pdev->dev,
8060                                  "Active VFs found, allocating resources.\n");
8061                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
8062                         if (err)
8063                                 dev_info(&pdev->dev,
8064                                          "Error %d allocating resources for existing VFs\n",
8065                                          err);
8066                 }
8067         }
8068
8069         pfs_found++;
8070
8071         i40e_dbg_pf_init(pf);
8072
8073         /* tell the firmware that we're starting */
8074         dv.major_version = DRV_VERSION_MAJOR;
8075         dv.minor_version = DRV_VERSION_MINOR;
8076         dv.build_version = DRV_VERSION_BUILD;
8077         dv.subbuild_version = 0;
8078         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
8079
8080         /* since everything's happy, start the service_task timer */
8081         mod_timer(&pf->service_timer,
8082                   round_jiffies(jiffies + pf->service_timer_period));
8083
8084         /* Get the negotiated link width and speed from PCI config space */
8085         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
8086
8087         i40e_set_pci_config_data(hw, link_status);
8088
8089         dev_info(&pdev->dev, "PCI Express: %s %s\n",
8090                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
8091                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
8092                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
8093                  "Unknown"),
8094                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
8095                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
8096                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
8097                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
8098                  "Unknown"));
8099
8100         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
8101             hw->bus.speed < i40e_bus_speed_8000) {
8102                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
8103                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
8104         }
8105
8106         return 0;
8107
8108         /* Unwind what we've done if something failed in the setup */
8109 err_vsis:
8110         set_bit(__I40E_DOWN, &pf->state);
8111         i40e_clear_interrupt_scheme(pf);
8112         kfree(pf->vsi);
8113 err_switch_setup:
8114         i40e_reset_interrupt_capability(pf);
8115         del_timer_sync(&pf->service_timer);
8116 #ifdef CONFIG_I40E_DCB
8117 err_init_dcb:
8118 #endif /* CONFIG_I40E_DCB */
8119 err_mac_addr:
8120 err_configure_lan_hmc:
8121         (void)i40e_shutdown_lan_hmc(hw);
8122 err_init_lan_hmc:
8123         kfree(pf->qp_pile);
8124         kfree(pf->irq_pile);
8125 err_sw_init:
8126 err_adminq_setup:
8127         (void)i40e_shutdown_adminq(hw);
8128 err_pf_reset:
8129         iounmap(hw->hw_addr);
8130 err_ioremap:
8131         kfree(pf);
8132 err_pf_alloc:
8133         pci_disable_pcie_error_reporting(pdev);
8134         pci_release_selected_regions(pdev,
8135                                      pci_select_bars(pdev, IORESOURCE_MEM));
8136 err_pci_reg:
8137 err_dma:
8138         pci_disable_device(pdev);
8139         return err;
8140 }
8141
8142 /**
8143  * i40e_remove - Device removal routine
8144  * @pdev: PCI device information struct
8145  *
8146  * i40e_remove is called by the PCI subsystem to alert the driver
8147  * that is should release a PCI device.  This could be caused by a
8148  * Hot-Plug event, or because the driver is going to be removed from
8149  * memory.
8150  **/
8151 static void i40e_remove(struct pci_dev *pdev)
8152 {
8153         struct i40e_pf *pf = pci_get_drvdata(pdev);
8154         i40e_status ret_code;
8155         u32 reg;
8156         int i;
8157
8158         i40e_dbg_pf_exit(pf);
8159
8160         i40e_ptp_stop(pf);
8161
8162         /* no more scheduling of any task */
8163         set_bit(__I40E_DOWN, &pf->state);
8164         del_timer_sync(&pf->service_timer);
8165         cancel_work_sync(&pf->service_task);
8166
8167         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
8168                 i40e_free_vfs(pf);
8169                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
8170         }
8171
8172         i40e_fdir_teardown(pf);
8173
8174         /* If there is a switch structure or any orphans, remove them.
8175          * This will leave only the PF's VSI remaining.
8176          */
8177         for (i = 0; i < I40E_MAX_VEB; i++) {
8178                 if (!pf->veb[i])
8179                         continue;
8180
8181                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
8182                     pf->veb[i]->uplink_seid == 0)
8183                         i40e_switch_branch_release(pf->veb[i]);
8184         }
8185
8186         /* Now we can shutdown the PF's VSI, just before we kill
8187          * adminq and hmc.
8188          */
8189         if (pf->vsi[pf->lan_vsi])
8190                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
8191
8192         i40e_stop_misc_vector(pf);
8193         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8194                 synchronize_irq(pf->msix_entries[0].vector);
8195                 free_irq(pf->msix_entries[0].vector, pf);
8196         }
8197
8198         /* shutdown and destroy the HMC */
8199         ret_code = i40e_shutdown_lan_hmc(&pf->hw);
8200         if (ret_code)
8201                 dev_warn(&pdev->dev,
8202                          "Failed to destroy the HMC resources: %d\n", ret_code);
8203
8204         /* shutdown the adminq */
8205         ret_code = i40e_shutdown_adminq(&pf->hw);
8206         if (ret_code)
8207                 dev_warn(&pdev->dev,
8208                          "Failed to destroy the Admin Queue resources: %d\n",
8209                          ret_code);
8210
8211         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
8212         i40e_clear_interrupt_scheme(pf);
8213         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
8214                 if (pf->vsi[i]) {
8215                         i40e_vsi_clear_rings(pf->vsi[i]);
8216                         i40e_vsi_clear(pf->vsi[i]);
8217                         pf->vsi[i] = NULL;
8218                 }
8219         }
8220
8221         for (i = 0; i < I40E_MAX_VEB; i++) {
8222                 kfree(pf->veb[i]);
8223                 pf->veb[i] = NULL;
8224         }
8225
8226         kfree(pf->qp_pile);
8227         kfree(pf->irq_pile);
8228         kfree(pf->sw_config);
8229         kfree(pf->vsi);
8230
8231         /* force a PF reset to clean anything leftover */
8232         reg = rd32(&pf->hw, I40E_PFGEN_CTRL);
8233         wr32(&pf->hw, I40E_PFGEN_CTRL, (reg | I40E_PFGEN_CTRL_PFSWR_MASK));
8234         i40e_flush(&pf->hw);
8235
8236         iounmap(pf->hw.hw_addr);
8237         kfree(pf);
8238         pci_release_selected_regions(pdev,
8239                                      pci_select_bars(pdev, IORESOURCE_MEM));
8240
8241         pci_disable_pcie_error_reporting(pdev);
8242         pci_disable_device(pdev);
8243 }
8244
8245 /**
8246  * i40e_pci_error_detected - warning that something funky happened in PCI land
8247  * @pdev: PCI device information struct
8248  *
8249  * Called to warn that something happened and the error handling steps
8250  * are in progress.  Allows the driver to quiesce things, be ready for
8251  * remediation.
8252  **/
8253 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
8254                                                 enum pci_channel_state error)
8255 {
8256         struct i40e_pf *pf = pci_get_drvdata(pdev);
8257
8258         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
8259
8260         /* shutdown all operations */
8261         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
8262                 rtnl_lock();
8263                 i40e_prep_for_reset(pf);
8264                 rtnl_unlock();
8265         }
8266
8267         /* Request a slot reset */
8268         return PCI_ERS_RESULT_NEED_RESET;
8269 }
8270
8271 /**
8272  * i40e_pci_error_slot_reset - a PCI slot reset just happened
8273  * @pdev: PCI device information struct
8274  *
8275  * Called to find if the driver can work with the device now that
8276  * the pci slot has been reset.  If a basic connection seems good
8277  * (registers are readable and have sane content) then return a
8278  * happy little PCI_ERS_RESULT_xxx.
8279  **/
8280 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
8281 {
8282         struct i40e_pf *pf = pci_get_drvdata(pdev);
8283         pci_ers_result_t result;
8284         int err;
8285         u32 reg;
8286
8287         dev_info(&pdev->dev, "%s\n", __func__);
8288         if (pci_enable_device_mem(pdev)) {
8289                 dev_info(&pdev->dev,
8290                          "Cannot re-enable PCI device after reset.\n");
8291                 result = PCI_ERS_RESULT_DISCONNECT;
8292         } else {
8293                 pci_set_master(pdev);
8294                 pci_restore_state(pdev);
8295                 pci_save_state(pdev);
8296                 pci_wake_from_d3(pdev, false);
8297
8298                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
8299                 if (reg == 0)
8300                         result = PCI_ERS_RESULT_RECOVERED;
8301                 else
8302                         result = PCI_ERS_RESULT_DISCONNECT;
8303         }
8304
8305         err = pci_cleanup_aer_uncorrect_error_status(pdev);
8306         if (err) {
8307                 dev_info(&pdev->dev,
8308                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
8309                          err);
8310                 /* non-fatal, continue */
8311         }
8312
8313         return result;
8314 }
8315
8316 /**
8317  * i40e_pci_error_resume - restart operations after PCI error recovery
8318  * @pdev: PCI device information struct
8319  *
8320  * Called to allow the driver to bring things back up after PCI error
8321  * and/or reset recovery has finished.
8322  **/
8323 static void i40e_pci_error_resume(struct pci_dev *pdev)
8324 {
8325         struct i40e_pf *pf = pci_get_drvdata(pdev);
8326
8327         dev_info(&pdev->dev, "%s\n", __func__);
8328         if (test_bit(__I40E_SUSPENDED, &pf->state))
8329                 return;
8330
8331         rtnl_lock();
8332         i40e_handle_reset_warning(pf);
8333         rtnl_lock();
8334 }
8335
8336 /**
8337  * i40e_shutdown - PCI callback for shutting down
8338  * @pdev: PCI device information struct
8339  **/
8340 static void i40e_shutdown(struct pci_dev *pdev)
8341 {
8342         struct i40e_pf *pf = pci_get_drvdata(pdev);
8343         struct i40e_hw *hw = &pf->hw;
8344
8345         set_bit(__I40E_SUSPENDED, &pf->state);
8346         set_bit(__I40E_DOWN, &pf->state);
8347         rtnl_lock();
8348         i40e_prep_for_reset(pf);
8349         rtnl_unlock();
8350
8351         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
8352         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
8353
8354         if (system_state == SYSTEM_POWER_OFF) {
8355                 pci_wake_from_d3(pdev, pf->wol_en);
8356                 pci_set_power_state(pdev, PCI_D3hot);
8357         }
8358 }
8359
8360 #ifdef CONFIG_PM
8361 /**
8362  * i40e_suspend - PCI callback for moving to D3
8363  * @pdev: PCI device information struct
8364  **/
8365 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
8366 {
8367         struct i40e_pf *pf = pci_get_drvdata(pdev);
8368         struct i40e_hw *hw = &pf->hw;
8369
8370         set_bit(__I40E_SUSPENDED, &pf->state);
8371         set_bit(__I40E_DOWN, &pf->state);
8372         rtnl_lock();
8373         i40e_prep_for_reset(pf);
8374         rtnl_unlock();
8375
8376         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
8377         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
8378
8379         pci_wake_from_d3(pdev, pf->wol_en);
8380         pci_set_power_state(pdev, PCI_D3hot);
8381
8382         return 0;
8383 }
8384
8385 /**
8386  * i40e_resume - PCI callback for waking up from D3
8387  * @pdev: PCI device information struct
8388  **/
8389 static int i40e_resume(struct pci_dev *pdev)
8390 {
8391         struct i40e_pf *pf = pci_get_drvdata(pdev);
8392         u32 err;
8393
8394         pci_set_power_state(pdev, PCI_D0);
8395         pci_restore_state(pdev);
8396         /* pci_restore_state() clears dev->state_saves, so
8397          * call pci_save_state() again to restore it.
8398          */
8399         pci_save_state(pdev);
8400
8401         err = pci_enable_device_mem(pdev);
8402         if (err) {
8403                 dev_err(&pdev->dev,
8404                         "%s: Cannot enable PCI device from suspend\n",
8405                         __func__);
8406                 return err;
8407         }
8408         pci_set_master(pdev);
8409
8410         /* no wakeup events while running */
8411         pci_wake_from_d3(pdev, false);
8412
8413         /* handling the reset will rebuild the device state */
8414         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
8415                 clear_bit(__I40E_DOWN, &pf->state);
8416                 rtnl_lock();
8417                 i40e_reset_and_rebuild(pf, false);
8418                 rtnl_unlock();
8419         }
8420
8421         return 0;
8422 }
8423
8424 #endif
8425 static const struct pci_error_handlers i40e_err_handler = {
8426         .error_detected = i40e_pci_error_detected,
8427         .slot_reset = i40e_pci_error_slot_reset,
8428         .resume = i40e_pci_error_resume,
8429 };
8430
8431 static struct pci_driver i40e_driver = {
8432         .name     = i40e_driver_name,
8433         .id_table = i40e_pci_tbl,
8434         .probe    = i40e_probe,
8435         .remove   = i40e_remove,
8436 #ifdef CONFIG_PM
8437         .suspend  = i40e_suspend,
8438         .resume   = i40e_resume,
8439 #endif
8440         .shutdown = i40e_shutdown,
8441         .err_handler = &i40e_err_handler,
8442         .sriov_configure = i40e_pci_sriov_configure,
8443 };
8444
8445 /**
8446  * i40e_init_module - Driver registration routine
8447  *
8448  * i40e_init_module is the first routine called when the driver is
8449  * loaded. All it does is register with the PCI subsystem.
8450  **/
8451 static int __init i40e_init_module(void)
8452 {
8453         pr_info("%s: %s - version %s\n", i40e_driver_name,
8454                 i40e_driver_string, i40e_driver_version_str);
8455         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
8456         i40e_dbg_init();
8457         return pci_register_driver(&i40e_driver);
8458 }
8459 module_init(i40e_init_module);
8460
8461 /**
8462  * i40e_exit_module - Driver exit cleanup routine
8463  *
8464  * i40e_exit_module is called just before the driver is removed
8465  * from memory.
8466  **/
8467 static void __exit i40e_exit_module(void)
8468 {
8469         pci_unregister_driver(&i40e_driver);
8470         i40e_dbg_exit();
8471 }
8472 module_exit(i40e_exit_module);