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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2014 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 /* Local includes */
  28 #include "i40e.h"
  29 #include "i40e_diag.h"
  30 #ifdef CONFIG_I40E_VXLAN
  31 #include <net/vxlan.h>
  32 #endif
  33
  34 const char i40e_driver_name[] = "i40e";
  35 static const char i40e_driver_string[] =
  36                         "Intel(R) Ethernet Connection XL710 Network Driver";
  37
  38 #define DRV_KERN "-k"
  39
  40 #define DRV_VERSION_MAJOR 0
  41 #define DRV_VERSION_MINOR 3
  42 #define DRV_VERSION_BUILD 46
  43 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  44              __stringify(DRV_VERSION_MINOR) "." \
  45              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  46 const char i40e_driver_version_str[] = DRV_VERSION;
  47 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  48
  49 /* a bit of forward declarations */
  50 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  51 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  52 static int i40e_add_vsi(struct i40e_vsi *vsi);
  53 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  54 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  55 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  56 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  57 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  58 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  59 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  60
  61 /* i40e_pci_tbl - PCI Device ID Table
  62  *
  63  * Last entry must be all 0s
  64  *
  65  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  66  *   Class, Class Mask, private data (not used) }
  67  */
  68 static DEFINE_PCI_DEVICE_TABLE(i40e_pci_tbl) = {
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X710), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_D), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  79         /* required last entry */
  80         {0, }
  81 };
  82 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  83
  84 #define I40E_MAX_VF_COUNT 128
  85 static int debug = -1;
  86 module_param(debug, int, 0);
  87 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  88
  89 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  90 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  91 MODULE_LICENSE("GPL");
  92 MODULE_VERSION(DRV_VERSION);
  93
  94 /**
  95  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  96  * @hw:   pointer to the HW structure
  97  * @mem:  ptr to mem struct to fill out
  98  * @size: size of memory requested
  99  * @alignment: what to align the allocation to
 100  **/
 101 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 102                             u64 size, u32 alignment)
 103 {
 104         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 105
 106         mem->size = ALIGN(size, alignment);
 107         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 108                                       &mem->pa, GFP_KERNEL);
 109         if (!mem->va)
 110                 return -ENOMEM;
 111
 112         return 0;
 113 }
 114
 115 /**
 116  * i40e_free_dma_mem_d - OS specific memory free for shared code
 117  * @hw:   pointer to the HW structure
 118  * @mem:  ptr to mem struct to free
 119  **/
 120 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 121 {
 122         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 123
 124         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 125         mem->va = NULL;
 126         mem->pa = 0;
 127         mem->size = 0;
 128
 129         return 0;
 130 }
 131
 132 /**
 133  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 134  * @hw:   pointer to the HW structure
 135  * @mem:  ptr to mem struct to fill out
 136  * @size: size of memory requested
 137  **/
 138 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 139                              u32 size)
 140 {
 141         mem->size = size;
 142         mem->va = kzalloc(size, GFP_KERNEL);
 143
 144         if (!mem->va)
 145                 return -ENOMEM;
 146
 147         return 0;
 148 }
 149
 150 /**
 151  * i40e_free_virt_mem_d - OS specific memory free for shared code
 152  * @hw:   pointer to the HW structure
 153  * @mem:  ptr to mem struct to free
 154  **/
 155 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 156 {
 157         /* it's ok to kfree a NULL pointer */
 158         kfree(mem->va);
 159         mem->va = NULL;
 160         mem->size = 0;
 161
 162         return 0;
 163 }
 164
 165 /**
 166  * i40e_get_lump - find a lump of free generic resource
 167  * @pf: board private structure
 168  * @pile: the pile of resource to search
 169  * @needed: the number of items needed
 170  * @id: an owner id to stick on the items assigned
 171  *
 172  * Returns the base item index of the lump, or negative for error
 173  *
 174  * The search_hint trick and lack of advanced fit-finding only work
 175  * because we're highly likely to have all the same size lump requests.
 176  * Linear search time and any fragmentation should be minimal.
 177  **/
 178 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 179                          u16 needed, u16 id)
 180 {
 181         int ret = -ENOMEM;
 182         int i, j;
 183
 184         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 185                 dev_info(&pf->pdev->dev,
 186                          "param err: pile=%p needed=%d id=0x%04x\n",
 187                          pile, needed, id);
 188                 return -EINVAL;
 189         }
 190
 191         /* start the linear search with an imperfect hint */
 192         i = pile->search_hint;
 193         while (i < pile->num_entries) {
 194                 /* skip already allocated entries */
 195                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 196                         i++;
 197                         continue;
 198                 }
 199
 200                 /* do we have enough in this lump? */
 201                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 202                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 203                                 break;
 204                 }
 205
 206                 if (j == needed) {
 207                         /* there was enough, so assign it to the requestor */
 208                         for (j = 0; j < needed; j++)
 209                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 210                         ret = i;
 211                         pile->search_hint = i + j;
 212                         break;
 213                 } else {
 214                         /* not enough, so skip over it and continue looking */
 215                         i += j;
 216                 }
 217         }
 218
 219         return ret;
 220 }
 221
 222 /**
 223  * i40e_put_lump - return a lump of generic resource
 224  * @pile: the pile of resource to search
 225  * @index: the base item index
 226  * @id: the owner id of the items assigned
 227  *
 228  * Returns the count of items in the lump
 229  **/
 230 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 231 {
 232         int valid_id = (id | I40E_PILE_VALID_BIT);
 233         int count = 0;
 234         int i;
 235
 236         if (!pile || index >= pile->num_entries)
 237                 return -EINVAL;
 238
 239         for (i = index;
 240              i < pile->num_entries && pile->list[i] == valid_id;
 241              i++) {
 242                 pile->list[i] = 0;
 243                 count++;
 244         }
 245
 246         if (count && index < pile->search_hint)
 247                 pile->search_hint = index;
 248
 249         return count;
 250 }
 251
 252 /**
 253  * i40e_service_event_schedule - Schedule the service task to wake up
 254  * @pf: board private structure
 255  *
 256  * If not already scheduled, this puts the task into the work queue
 257  **/
 258 static void i40e_service_event_schedule(struct i40e_pf *pf)
 259 {
 260         if (!test_bit(__I40E_DOWN, &pf->state) &&
 261             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 262             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 263                 schedule_work(&pf->service_task);
 264 }
 265
 266 /**
 267  * i40e_tx_timeout - Respond to a Tx Hang
 268  * @netdev: network interface device structure
 269  *
 270  * If any port has noticed a Tx timeout, it is likely that the whole
 271  * device is munged, not just the one netdev port, so go for the full
 272  * reset.
 273  **/
 274 static void i40e_tx_timeout(struct net_device *netdev)
 275 {
 276         struct i40e_netdev_priv *np = netdev_priv(netdev);
 277         struct i40e_vsi *vsi = np->vsi;
 278         struct i40e_pf *pf = vsi->back;
 279
 280         pf->tx_timeout_count++;
 281
 282         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 283                 pf->tx_timeout_recovery_level = 0;
 284         pf->tx_timeout_last_recovery = jiffies;
 285         netdev_info(netdev, "tx_timeout recovery level %d\n",
 286                     pf->tx_timeout_recovery_level);
 287
 288         switch (pf->tx_timeout_recovery_level) {
 289         case 0:
 290                 /* disable and re-enable queues for the VSI */
 291                 if (in_interrupt()) {
 292                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 293                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 294                 } else {
 295                         i40e_vsi_reinit_locked(vsi);
 296                 }
 297                 break;
 298         case 1:
 299                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 300                 break;
 301         case 2:
 302                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 303                 break;
 304         case 3:
 305                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 306                 break;
 307         default:
 308                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 309                 set_bit(__I40E_DOWN, &vsi->state);
 310                 i40e_down(vsi);
 311                 break;
 312         }
 313         i40e_service_event_schedule(pf);
 314         pf->tx_timeout_recovery_level++;
 315 }
 316
 317 /**
 318  * i40e_release_rx_desc - Store the new tail and head values
 319  * @rx_ring: ring to bump
 320  * @val: new head index
 321  **/
 322 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 323 {
 324         rx_ring->next_to_use = val;
 325
 326         /* Force memory writes to complete before letting h/w
 327          * know there are new descriptors to fetch.  (Only
 328          * applicable for weak-ordered memory model archs,
 329          * such as IA-64).
 330          */
 331         wmb();
 332         writel(val, rx_ring->tail);
 333 }
 334
 335 /**
 336  * i40e_get_vsi_stats_struct - Get System Network Statistics
 337  * @vsi: the VSI we care about
 338  *
 339  * Returns the address of the device statistics structure.
 340  * The statistics are actually updated from the service task.
 341  **/
 342 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 343 {
 344         return &vsi->net_stats;
 345 }
 346
 347 /**
 348  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 349  * @netdev: network interface device structure
 350  *
 351  * Returns the address of the device statistics structure.
 352  * The statistics are actually updated from the service task.
 353  **/
 354 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 355                                              struct net_device *netdev,
 356                                              struct rtnl_link_stats64 *stats)
 357 {
 358         struct i40e_netdev_priv *np = netdev_priv(netdev);
 359         struct i40e_vsi *vsi = np->vsi;
 360         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 361         int i;
 362
 363         if (test_bit(__I40E_DOWN, &vsi->state))
 364                 return stats;
 365
 366         if (!vsi->tx_rings)
 367                 return stats;
 368
 369         rcu_read_lock();
 370         for (i = 0; i < vsi->num_queue_pairs; i++) {
 371                 struct i40e_ring *tx_ring, *rx_ring;
 372                 u64 bytes, packets;
 373                 unsigned int start;
 374
 375                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 376                 if (!tx_ring)
 377                         continue;
 378
 379                 do {
 380                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 381                         packets = tx_ring->stats.packets;
 382                         bytes   = tx_ring->stats.bytes;
 383                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 384
 385                 stats->tx_packets += packets;
 386                 stats->tx_bytes   += bytes;
 387                 rx_ring = &tx_ring[1];
 388
 389                 do {
 390                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 391                         packets = rx_ring->stats.packets;
 392                         bytes   = rx_ring->stats.bytes;
 393                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 394
 395                 stats->rx_packets += packets;
 396                 stats->rx_bytes   += bytes;
 397         }
 398         rcu_read_unlock();
 399
 400         /* following stats updated by ixgbe_watchdog_task() */
 401         stats->multicast        = vsi_stats->multicast;
 402         stats->tx_errors        = vsi_stats->tx_errors;
 403         stats->tx_dropped       = vsi_stats->tx_dropped;
 404         stats->rx_errors        = vsi_stats->rx_errors;
 405         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 406         stats->rx_length_errors = vsi_stats->rx_length_errors;
 407
 408         return stats;
 409 }
 410
 411 /**
 412  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 413  * @vsi: the VSI to have its stats reset
 414  **/
 415 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 416 {
 417         struct rtnl_link_stats64 *ns;
 418         int i;
 419
 420         if (!vsi)
 421                 return;
 422
 423         ns = i40e_get_vsi_stats_struct(vsi);
 424         memset(ns, 0, sizeof(*ns));
 425         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 426         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 427         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 428         if (vsi->rx_rings && vsi->rx_rings[0]) {
 429                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 430                         memset(&vsi->rx_rings[i]->stats, 0 ,
 431                                sizeof(vsi->rx_rings[i]->stats));
 432                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 433                                sizeof(vsi->rx_rings[i]->rx_stats));
 434                         memset(&vsi->tx_rings[i]->stats, 0 ,
 435                                sizeof(vsi->tx_rings[i]->stats));
 436                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 437                                sizeof(vsi->tx_rings[i]->tx_stats));
 438                 }
 439         }
 440         vsi->stat_offsets_loaded = false;
 441 }
 442
 443 /**
 444  * i40e_pf_reset_stats - Reset all of the stats for the given pf
 445  * @pf: the PF to be reset
 446  **/
 447 void i40e_pf_reset_stats(struct i40e_pf *pf)
 448 {
 449         memset(&pf->stats, 0, sizeof(pf->stats));
 450         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 451         pf->stat_offsets_loaded = false;
 452 }
 453
 454 /**
 455  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 456  * @hw: ptr to the hardware info
 457  * @hireg: the high 32 bit reg to read
 458  * @loreg: the low 32 bit reg to read
 459  * @offset_loaded: has the initial offset been loaded yet
 460  * @offset: ptr to current offset value
 461  * @stat: ptr to the stat
 462  *
 463  * Since the device stats are not reset at PFReset, they likely will not
 464  * be zeroed when the driver starts.  We'll save the first values read
 465  * and use them as offsets to be subtracted from the raw values in order
 466  * to report stats that count from zero.  In the process, we also manage
 467  * the potential roll-over.
 468  **/
 469 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 470                                bool offset_loaded, u64 *offset, u64 *stat)
 471 {
 472         u64 new_data;
 473
 474         if (hw->device_id == I40E_DEV_ID_QEMU) {
 475                 new_data = rd32(hw, loreg);
 476                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 477         } else {
 478                 new_data = rd64(hw, loreg);
 479         }
 480         if (!offset_loaded)
 481                 *offset = new_data;
 482         if (likely(new_data >= *offset))
 483                 *stat = new_data - *offset;
 484         else
 485                 *stat = (new_data + ((u64)1 << 48)) - *offset;
 486         *stat &= 0xFFFFFFFFFFFFULL;
 487 }
 488
 489 /**
 490  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 491  * @hw: ptr to the hardware info
 492  * @reg: the hw reg to read
 493  * @offset_loaded: has the initial offset been loaded yet
 494  * @offset: ptr to current offset value
 495  * @stat: ptr to the stat
 496  **/
 497 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 498                                bool offset_loaded, u64 *offset, u64 *stat)
 499 {
 500         u32 new_data;
 501
 502         new_data = rd32(hw, reg);
 503         if (!offset_loaded)
 504                 *offset = new_data;
 505         if (likely(new_data >= *offset))
 506                 *stat = (u32)(new_data - *offset);
 507         else
 508                 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
 509 }
 510
 511 /**
 512  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 513  * @vsi: the VSI to be updated
 514  **/
 515 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 516 {
 517         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 518         struct i40e_pf *pf = vsi->back;
 519         struct i40e_hw *hw = &pf->hw;
 520         struct i40e_eth_stats *oes;
 521         struct i40e_eth_stats *es;     /* device's eth stats */
 522
 523         es = &vsi->eth_stats;
 524         oes = &vsi->eth_stats_offsets;
 525
 526         /* Gather up the stats that the hw collects */
 527         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 528                            vsi->stat_offsets_loaded,
 529                            &oes->tx_errors, &es->tx_errors);
 530         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 531                            vsi->stat_offsets_loaded,
 532                            &oes->rx_discards, &es->rx_discards);
 533
 534         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 535                            I40E_GLV_GORCL(stat_idx),
 536                            vsi->stat_offsets_loaded,
 537                            &oes->rx_bytes, &es->rx_bytes);
 538         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 539                            I40E_GLV_UPRCL(stat_idx),
 540                            vsi->stat_offsets_loaded,
 541                            &oes->rx_unicast, &es->rx_unicast);
 542         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 543                            I40E_GLV_MPRCL(stat_idx),
 544                            vsi->stat_offsets_loaded,
 545                            &oes->rx_multicast, &es->rx_multicast);
 546         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 547                            I40E_GLV_BPRCL(stat_idx),
 548                            vsi->stat_offsets_loaded,
 549                            &oes->rx_broadcast, &es->rx_broadcast);
 550
 551         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 552                            I40E_GLV_GOTCL(stat_idx),
 553                            vsi->stat_offsets_loaded,
 554                            &oes->tx_bytes, &es->tx_bytes);
 555         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 556                            I40E_GLV_UPTCL(stat_idx),
 557                            vsi->stat_offsets_loaded,
 558                            &oes->tx_unicast, &es->tx_unicast);
 559         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 560                            I40E_GLV_MPTCL(stat_idx),
 561                            vsi->stat_offsets_loaded,
 562                            &oes->tx_multicast, &es->tx_multicast);
 563         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 564                            I40E_GLV_BPTCL(stat_idx),
 565                            vsi->stat_offsets_loaded,
 566                            &oes->tx_broadcast, &es->tx_broadcast);
 567         vsi->stat_offsets_loaded = true;
 568 }
 569
 570 /**
 571  * i40e_update_veb_stats - Update Switch component statistics
 572  * @veb: the VEB being updated
 573  **/
 574 static void i40e_update_veb_stats(struct i40e_veb *veb)
 575 {
 576         struct i40e_pf *pf = veb->pf;
 577         struct i40e_hw *hw = &pf->hw;
 578         struct i40e_eth_stats *oes;
 579         struct i40e_eth_stats *es;     /* device's eth stats */
 580         int idx = 0;
 581
 582         idx = veb->stats_idx;
 583         es = &veb->stats;
 584         oes = &veb->stats_offsets;
 585
 586         /* Gather up the stats that the hw collects */
 587         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 588                            veb->stat_offsets_loaded,
 589                            &oes->tx_discards, &es->tx_discards);
 590         if (hw->revision_id > 0)
 591                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 592                                    veb->stat_offsets_loaded,
 593                                    &oes->rx_unknown_protocol,
 594                                    &es->rx_unknown_protocol);
 595         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 596                            veb->stat_offsets_loaded,
 597                            &oes->rx_bytes, &es->rx_bytes);
 598         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 599                            veb->stat_offsets_loaded,
 600                            &oes->rx_unicast, &es->rx_unicast);
 601         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 602                            veb->stat_offsets_loaded,
 603                            &oes->rx_multicast, &es->rx_multicast);
 604         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 605                            veb->stat_offsets_loaded,
 606                            &oes->rx_broadcast, &es->rx_broadcast);
 607
 608         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 609                            veb->stat_offsets_loaded,
 610                            &oes->tx_bytes, &es->tx_bytes);
 611         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 612                            veb->stat_offsets_loaded,
 613                            &oes->tx_unicast, &es->tx_unicast);
 614         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 615                            veb->stat_offsets_loaded,
 616                            &oes->tx_multicast, &es->tx_multicast);
 617         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 618                            veb->stat_offsets_loaded,
 619                            &oes->tx_broadcast, &es->tx_broadcast);
 620         veb->stat_offsets_loaded = true;
 621 }
 622
 623 /**
 624  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 625  * @pf: the corresponding PF
 626  *
 627  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 628  **/
 629 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 630 {
 631         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 632         struct i40e_hw_port_stats *nsd = &pf->stats;
 633         struct i40e_hw *hw = &pf->hw;
 634         u64 xoff = 0;
 635         u16 i, v;
 636
 637         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 638             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 639                 return;
 640
 641         xoff = nsd->link_xoff_rx;
 642         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 643                            pf->stat_offsets_loaded,
 644                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 645
 646         /* No new LFC xoff rx */
 647         if (!(nsd->link_xoff_rx - xoff))
 648                 return;
 649
 650         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 651         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
 652                 struct i40e_vsi *vsi = pf->vsi[v];
 653
 654                 if (!vsi)
 655                         continue;
 656
 657                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 658                         struct i40e_ring *ring = vsi->tx_rings[i];
 659                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 660                 }
 661         }
 662 }
 663
 664 /**
 665  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 666  * @pf: the corresponding PF
 667  *
 668  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 669  **/
 670 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 671 {
 672         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 673         struct i40e_hw_port_stats *nsd = &pf->stats;
 674         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 675         struct i40e_dcbx_config *dcb_cfg;
 676         struct i40e_hw *hw = &pf->hw;
 677         u16 i, v;
 678         u8 tc;
 679
 680         dcb_cfg = &hw->local_dcbx_config;
 681
 682         /* See if DCB enabled with PFC TC */
 683         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 684             !(dcb_cfg->pfc.pfcenable)) {
 685                 i40e_update_link_xoff_rx(pf);
 686                 return;
 687         }
 688
 689         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 690                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 691                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 692                                    pf->stat_offsets_loaded,
 693                                    &osd->priority_xoff_rx[i],
 694                                    &nsd->priority_xoff_rx[i]);
 695
 696                 /* No new PFC xoff rx */
 697                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 698                         continue;
 699                 /* Get the TC for given priority */
 700                 tc = dcb_cfg->etscfg.prioritytable[i];
 701                 xoff[tc] = true;
 702         }
 703
 704         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 705         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
 706                 struct i40e_vsi *vsi = pf->vsi[v];
 707
 708                 if (!vsi)
 709                         continue;
 710
 711                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 712                         struct i40e_ring *ring = vsi->tx_rings[i];
 713
 714                         tc = ring->dcb_tc;
 715                         if (xoff[tc])
 716                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 717                                           &ring->state);
 718                 }
 719         }
 720 }
 721
 722 /**
 723  * i40e_update_stats - Update the board statistics counters.
 724  * @vsi: the VSI to be updated
 725  *
 726  * There are a few instances where we store the same stat in a
 727  * couple of different structs.  This is partly because we have
 728  * the netdev stats that need to be filled out, which is slightly
 729  * different from the "eth_stats" defined by the chip and used in
 730  * VF communications.  We sort it all out here in a central place.
 731  **/
 732 void i40e_update_stats(struct i40e_vsi *vsi)
 733 {
 734         struct i40e_pf *pf = vsi->back;
 735         struct i40e_hw *hw = &pf->hw;
 736         struct rtnl_link_stats64 *ons;
 737         struct rtnl_link_stats64 *ns;   /* netdev stats */
 738         struct i40e_eth_stats *oes;
 739         struct i40e_eth_stats *es;     /* device's eth stats */
 740         u32 tx_restart, tx_busy;
 741         u32 rx_page, rx_buf;
 742         u64 rx_p, rx_b;
 743         u64 tx_p, tx_b;
 744         u32 val;
 745         int i;
 746         u16 q;
 747
 748         if (test_bit(__I40E_DOWN, &vsi->state) ||
 749             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 750                 return;
 751
 752         ns = i40e_get_vsi_stats_struct(vsi);
 753         ons = &vsi->net_stats_offsets;
 754         es = &vsi->eth_stats;
 755         oes = &vsi->eth_stats_offsets;
 756
 757         /* Gather up the netdev and vsi stats that the driver collects
 758          * on the fly during packet processing
 759          */
 760         rx_b = rx_p = 0;
 761         tx_b = tx_p = 0;
 762         tx_restart = tx_busy = 0;
 763         rx_page = 0;
 764         rx_buf = 0;
 765         rcu_read_lock();
 766         for (q = 0; q < vsi->num_queue_pairs; q++) {
 767                 struct i40e_ring *p;
 768                 u64 bytes, packets;
 769                 unsigned int start;
 770
 771                 /* locate Tx ring */
 772                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 773
 774                 do {
 775                         start = u64_stats_fetch_begin_irq(&p->syncp);
 776                         packets = p->stats.packets;
 777                         bytes = p->stats.bytes;
 778                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 779                 tx_b += bytes;
 780                 tx_p += packets;
 781                 tx_restart += p->tx_stats.restart_queue;
 782                 tx_busy += p->tx_stats.tx_busy;
 783
 784                 /* Rx queue is part of the same block as Tx queue */
 785                 p = &p[1];
 786                 do {
 787                         start = u64_stats_fetch_begin_irq(&p->syncp);
 788                         packets = p->stats.packets;
 789                         bytes = p->stats.bytes;
 790                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 791                 rx_b += bytes;
 792                 rx_p += packets;
 793                 rx_buf += p->rx_stats.alloc_buff_failed;
 794                 rx_page += p->rx_stats.alloc_page_failed;
 795         }
 796         rcu_read_unlock();
 797         vsi->tx_restart = tx_restart;
 798         vsi->tx_busy = tx_busy;
 799         vsi->rx_page_failed = rx_page;
 800         vsi->rx_buf_failed = rx_buf;
 801
 802         ns->rx_packets = rx_p;
 803         ns->rx_bytes = rx_b;
 804         ns->tx_packets = tx_p;
 805         ns->tx_bytes = tx_b;
 806
 807         i40e_update_eth_stats(vsi);
 808         /* update netdev stats from eth stats */
 809         ons->rx_errors = oes->rx_errors;
 810         ns->rx_errors = es->rx_errors;
 811         ons->tx_errors = oes->tx_errors;
 812         ns->tx_errors = es->tx_errors;
 813         ons->multicast = oes->rx_multicast;
 814         ns->multicast = es->rx_multicast;
 815         ons->tx_dropped = oes->tx_discards;
 816         ns->tx_dropped = es->tx_discards;
 817
 818         /* Get the port data only if this is the main PF VSI */
 819         if (vsi == pf->vsi[pf->lan_vsi]) {
 820                 struct i40e_hw_port_stats *nsd = &pf->stats;
 821                 struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 822
 823                 i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 824                                    I40E_GLPRT_GORCL(hw->port),
 825                                    pf->stat_offsets_loaded,
 826                                    &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 827                 i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 828                                    I40E_GLPRT_GOTCL(hw->port),
 829                                    pf->stat_offsets_loaded,
 830                                    &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 831                 i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 832                                    pf->stat_offsets_loaded,
 833                                    &osd->eth.rx_discards,
 834                                    &nsd->eth.rx_discards);
 835                 i40e_stat_update32(hw, I40E_GLPRT_TDPC(hw->port),
 836                                    pf->stat_offsets_loaded,
 837                                    &osd->eth.tx_discards,
 838                                    &nsd->eth.tx_discards);
 839                 i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 840                                    I40E_GLPRT_MPRCL(hw->port),
 841                                    pf->stat_offsets_loaded,
 842                                    &osd->eth.rx_multicast,
 843                                    &nsd->eth.rx_multicast);
 844
 845                 i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 846                                    pf->stat_offsets_loaded,
 847                                    &osd->tx_dropped_link_down,
 848                                    &nsd->tx_dropped_link_down);
 849
 850                 i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 851                                    pf->stat_offsets_loaded,
 852                                    &osd->crc_errors, &nsd->crc_errors);
 853                 ns->rx_crc_errors = nsd->crc_errors;
 854
 855                 i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 856                                    pf->stat_offsets_loaded,
 857                                    &osd->illegal_bytes, &nsd->illegal_bytes);
 858                 ns->rx_errors = nsd->crc_errors
 859                                 + nsd->illegal_bytes;
 860
 861                 i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 862                                    pf->stat_offsets_loaded,
 863                                    &osd->mac_local_faults,
 864                                    &nsd->mac_local_faults);
 865                 i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 866                                    pf->stat_offsets_loaded,
 867                                    &osd->mac_remote_faults,
 868                                    &nsd->mac_remote_faults);
 869
 870                 i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 871                                    pf->stat_offsets_loaded,
 872                                    &osd->rx_length_errors,
 873                                    &nsd->rx_length_errors);
 874                 ns->rx_length_errors = nsd->rx_length_errors;
 875
 876                 i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 877                                    pf->stat_offsets_loaded,
 878                                    &osd->link_xon_rx, &nsd->link_xon_rx);
 879                 i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 880                                    pf->stat_offsets_loaded,
 881                                    &osd->link_xon_tx, &nsd->link_xon_tx);
 882                 i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
 883                 i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 884                                    pf->stat_offsets_loaded,
 885                                    &osd->link_xoff_tx, &nsd->link_xoff_tx);
 886
 887                 for (i = 0; i < 8; i++) {
 888                         i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 889                                            pf->stat_offsets_loaded,
 890                                            &osd->priority_xon_rx[i],
 891                                            &nsd->priority_xon_rx[i]);
 892                         i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 893                                            pf->stat_offsets_loaded,
 894                                            &osd->priority_xon_tx[i],
 895                                            &nsd->priority_xon_tx[i]);
 896                         i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
 897                                            pf->stat_offsets_loaded,
 898                                            &osd->priority_xoff_tx[i],
 899                                            &nsd->priority_xoff_tx[i]);
 900                         i40e_stat_update32(hw,
 901                                            I40E_GLPRT_RXON2OFFCNT(hw->port, i),
 902                                            pf->stat_offsets_loaded,
 903                                            &osd->priority_xon_2_xoff[i],
 904                                            &nsd->priority_xon_2_xoff[i]);
 905                 }
 906
 907                 i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
 908                                    I40E_GLPRT_PRC64L(hw->port),
 909                                    pf->stat_offsets_loaded,
 910                                    &osd->rx_size_64, &nsd->rx_size_64);
 911                 i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
 912                                    I40E_GLPRT_PRC127L(hw->port),
 913                                    pf->stat_offsets_loaded,
 914                                    &osd->rx_size_127, &nsd->rx_size_127);
 915                 i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
 916                                    I40E_GLPRT_PRC255L(hw->port),
 917                                    pf->stat_offsets_loaded,
 918                                    &osd->rx_size_255, &nsd->rx_size_255);
 919                 i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
 920                                    I40E_GLPRT_PRC511L(hw->port),
 921                                    pf->stat_offsets_loaded,
 922                                    &osd->rx_size_511, &nsd->rx_size_511);
 923                 i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
 924                                    I40E_GLPRT_PRC1023L(hw->port),
 925                                    pf->stat_offsets_loaded,
 926                                    &osd->rx_size_1023, &nsd->rx_size_1023);
 927                 i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
 928                                    I40E_GLPRT_PRC1522L(hw->port),
 929                                    pf->stat_offsets_loaded,
 930                                    &osd->rx_size_1522, &nsd->rx_size_1522);
 931                 i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
 932                                    I40E_GLPRT_PRC9522L(hw->port),
 933                                    pf->stat_offsets_loaded,
 934                                    &osd->rx_size_big, &nsd->rx_size_big);
 935
 936                 i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
 937                                    I40E_GLPRT_PTC64L(hw->port),
 938                                    pf->stat_offsets_loaded,
 939                                    &osd->tx_size_64, &nsd->tx_size_64);
 940                 i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
 941                                    I40E_GLPRT_PTC127L(hw->port),
 942                                    pf->stat_offsets_loaded,
 943                                    &osd->tx_size_127, &nsd->tx_size_127);
 944                 i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
 945                                    I40E_GLPRT_PTC255L(hw->port),
 946                                    pf->stat_offsets_loaded,
 947                                    &osd->tx_size_255, &nsd->tx_size_255);
 948                 i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
 949                                    I40E_GLPRT_PTC511L(hw->port),
 950                                    pf->stat_offsets_loaded,
 951                                    &osd->tx_size_511, &nsd->tx_size_511);
 952                 i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
 953                                    I40E_GLPRT_PTC1023L(hw->port),
 954                                    pf->stat_offsets_loaded,
 955                                    &osd->tx_size_1023, &nsd->tx_size_1023);
 956                 i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
 957                                    I40E_GLPRT_PTC1522L(hw->port),
 958                                    pf->stat_offsets_loaded,
 959                                    &osd->tx_size_1522, &nsd->tx_size_1522);
 960                 i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
 961                                    I40E_GLPRT_PTC9522L(hw->port),
 962                                    pf->stat_offsets_loaded,
 963                                    &osd->tx_size_big, &nsd->tx_size_big);
 964
 965                 i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
 966                                    pf->stat_offsets_loaded,
 967                                    &osd->rx_undersize, &nsd->rx_undersize);
 968                 i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
 969                                    pf->stat_offsets_loaded,
 970                                    &osd->rx_fragments, &nsd->rx_fragments);
 971                 i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
 972                                    pf->stat_offsets_loaded,
 973                                    &osd->rx_oversize, &nsd->rx_oversize);
 974                 i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
 975                                    pf->stat_offsets_loaded,
 976                                    &osd->rx_jabber, &nsd->rx_jabber);
 977
 978                 val = rd32(hw, I40E_PRTPM_EEE_STAT);
 979                 nsd->tx_lpi_status =
 980                                (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
 981                                 I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
 982                 nsd->rx_lpi_status =
 983                                (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
 984                                 I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
 985                 i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
 986                                    pf->stat_offsets_loaded,
 987                                    &osd->tx_lpi_count, &nsd->tx_lpi_count);
 988                 i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
 989                                    pf->stat_offsets_loaded,
 990                                    &osd->rx_lpi_count, &nsd->rx_lpi_count);
 991         }
 992
 993         pf->stat_offsets_loaded = true;
 994 }
 995
 996 /**
 997  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
 998  * @vsi: the VSI to be searched
 999  * @macaddr: the MAC address
1000  * @vlan: the vlan
1001  * @is_vf: make sure its a vf filter, else doesn't matter
1002  * @is_netdev: make sure its a netdev filter, else doesn't matter
1003  *
1004  * Returns ptr to the filter object or NULL
1005  **/
1006 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1007                                                 u8 *macaddr, s16 vlan,
1008                                                 bool is_vf, bool is_netdev)
1009 {
1010         struct i40e_mac_filter *f;
1011
1012         if (!vsi || !macaddr)
1013                 return NULL;
1014
1015         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1016                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1017                     (vlan == f->vlan)    &&
1018                     (!is_vf || f->is_vf) &&
1019                     (!is_netdev || f->is_netdev))
1020                         return f;
1021         }
1022         return NULL;
1023 }
1024
1025 /**
1026  * i40e_find_mac - Find a mac addr in the macvlan filters list
1027  * @vsi: the VSI to be searched
1028  * @macaddr: the MAC address we are searching for
1029  * @is_vf: make sure its a vf filter, else doesn't matter
1030  * @is_netdev: make sure its a netdev filter, else doesn't matter
1031  *
1032  * Returns the first filter with the provided MAC address or NULL if
1033  * MAC address was not found
1034  **/
1035 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1036                                       bool is_vf, bool is_netdev)
1037 {
1038         struct i40e_mac_filter *f;
1039
1040         if (!vsi || !macaddr)
1041                 return NULL;
1042
1043         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1044                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1045                     (!is_vf || f->is_vf) &&
1046                     (!is_netdev || f->is_netdev))
1047                         return f;
1048         }
1049         return NULL;
1050 }
1051
1052 /**
1053  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1054  * @vsi: the VSI to be searched
1055  *
1056  * Returns true if VSI is in vlan mode or false otherwise
1057  **/
1058 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1059 {
1060         struct i40e_mac_filter *f;
1061
1062         /* Only -1 for all the filters denotes not in vlan mode
1063          * so we have to go through all the list in order to make sure
1064          */
1065         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1066                 if (f->vlan >= 0)
1067                         return true;
1068         }
1069
1070         return false;
1071 }
1072
1073 /**
1074  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1075  * @vsi: the VSI to be searched
1076  * @macaddr: the mac address to be filtered
1077  * @is_vf: true if it is a vf
1078  * @is_netdev: true if it is a netdev
1079  *
1080  * Goes through all the macvlan filters and adds a
1081  * macvlan filter for each unique vlan that already exists
1082  *
1083  * Returns first filter found on success, else NULL
1084  **/
1085 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1086                                              bool is_vf, bool is_netdev)
1087 {
1088         struct i40e_mac_filter *f;
1089
1090         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1091                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1092                                       is_vf, is_netdev)) {
1093                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1094                                              is_vf, is_netdev))
1095                                 return NULL;
1096                 }
1097         }
1098
1099         return list_first_entry_or_null(&vsi->mac_filter_list,
1100                                         struct i40e_mac_filter, list);
1101 }
1102
1103 /**
1104  * i40e_add_filter - Add a mac/vlan filter to the VSI
1105  * @vsi: the VSI to be searched
1106  * @macaddr: the MAC address
1107  * @vlan: the vlan
1108  * @is_vf: make sure its a vf filter, else doesn't matter
1109  * @is_netdev: make sure its a netdev filter, else doesn't matter
1110  *
1111  * Returns ptr to the filter object or NULL when no memory available.
1112  **/
1113 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1114                                         u8 *macaddr, s16 vlan,
1115                                         bool is_vf, bool is_netdev)
1116 {
1117         struct i40e_mac_filter *f;
1118
1119         if (!vsi || !macaddr)
1120                 return NULL;
1121
1122         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1123         if (!f) {
1124                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1125                 if (!f)
1126                         goto add_filter_out;
1127
1128                 memcpy(f->macaddr, macaddr, ETH_ALEN);
1129                 f->vlan = vlan;
1130                 f->changed = true;
1131
1132                 INIT_LIST_HEAD(&f->list);
1133                 list_add(&f->list, &vsi->mac_filter_list);
1134         }
1135
1136         /* increment counter and add a new flag if needed */
1137         if (is_vf) {
1138                 if (!f->is_vf) {
1139                         f->is_vf = true;
1140                         f->counter++;
1141                 }
1142         } else if (is_netdev) {
1143                 if (!f->is_netdev) {
1144                         f->is_netdev = true;
1145                         f->counter++;
1146                 }
1147         } else {
1148                 f->counter++;
1149         }
1150
1151         /* changed tells sync_filters_subtask to
1152          * push the filter down to the firmware
1153          */
1154         if (f->changed) {
1155                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1156                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1157         }
1158
1159 add_filter_out:
1160         return f;
1161 }
1162
1163 /**
1164  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1165  * @vsi: the VSI to be searched
1166  * @macaddr: the MAC address
1167  * @vlan: the vlan
1168  * @is_vf: make sure it's a vf filter, else doesn't matter
1169  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1170  **/
1171 void i40e_del_filter(struct i40e_vsi *vsi,
1172                      u8 *macaddr, s16 vlan,
1173                      bool is_vf, bool is_netdev)
1174 {
1175         struct i40e_mac_filter *f;
1176
1177         if (!vsi || !macaddr)
1178                 return;
1179
1180         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1181         if (!f || f->counter == 0)
1182                 return;
1183
1184         if (is_vf) {
1185                 if (f->is_vf) {
1186                         f->is_vf = false;
1187                         f->counter--;
1188                 }
1189         } else if (is_netdev) {
1190                 if (f->is_netdev) {
1191                         f->is_netdev = false;
1192                         f->counter--;
1193                 }
1194         } else {
1195                 /* make sure we don't remove a filter in use by vf or netdev */
1196                 int min_f = 0;
1197                 min_f += (f->is_vf ? 1 : 0);
1198                 min_f += (f->is_netdev ? 1 : 0);
1199
1200                 if (f->counter > min_f)
1201                         f->counter--;
1202         }
1203
1204         /* counter == 0 tells sync_filters_subtask to
1205          * remove the filter from the firmware's list
1206          */
1207         if (f->counter == 0) {
1208                 f->changed = true;
1209                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1210                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1211         }
1212 }
1213
1214 /**
1215  * i40e_set_mac - NDO callback to set mac address
1216  * @netdev: network interface device structure
1217  * @p: pointer to an address structure
1218  *
1219  * Returns 0 on success, negative on failure
1220  **/
1221 static int i40e_set_mac(struct net_device *netdev, void *p)
1222 {
1223         struct i40e_netdev_priv *np = netdev_priv(netdev);
1224         struct i40e_vsi *vsi = np->vsi;
1225         struct sockaddr *addr = p;
1226         struct i40e_mac_filter *f;
1227
1228         if (!is_valid_ether_addr(addr->sa_data))
1229                 return -EADDRNOTAVAIL;
1230
1231         netdev_info(netdev, "set mac address=%pM\n", addr->sa_data);
1232
1233         if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
1234                 return 0;
1235
1236         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1237             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1238                 return -EADDRNOTAVAIL;
1239
1240         if (vsi->type == I40E_VSI_MAIN) {
1241                 i40e_status ret;
1242                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1243                                                 I40E_AQC_WRITE_TYPE_LAA_ONLY,
1244                                                 addr->sa_data, NULL);
1245                 if (ret) {
1246                         netdev_info(netdev,
1247                                     "Addr change for Main VSI failed: %d\n",
1248                                     ret);
1249                         return -EADDRNOTAVAIL;
1250                 }
1251
1252                 memcpy(vsi->back->hw.mac.addr, addr->sa_data, netdev->addr_len);
1253         }
1254
1255         /* In order to be sure to not drop any packets, add the new address
1256          * then delete the old one.
1257          */
1258         f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY, false, false);
1259         if (!f)
1260                 return -ENOMEM;
1261
1262         i40e_sync_vsi_filters(vsi);
1263         i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY, false, false);
1264         i40e_sync_vsi_filters(vsi);
1265
1266         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1267
1268         return 0;
1269 }
1270
1271 /**
1272  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1273  * @vsi: the VSI being setup
1274  * @ctxt: VSI context structure
1275  * @enabled_tc: Enabled TCs bitmap
1276  * @is_add: True if called before Add VSI
1277  *
1278  * Setup VSI queue mapping for enabled traffic classes.
1279  **/
1280 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1281                                      struct i40e_vsi_context *ctxt,
1282                                      u8 enabled_tc,
1283                                      bool is_add)
1284 {
1285         struct i40e_pf *pf = vsi->back;
1286         u16 sections = 0;
1287         u8 netdev_tc = 0;
1288         u16 numtc = 0;
1289         u16 qcount;
1290         u8 offset;
1291         u16 qmap;
1292         int i;
1293         u16 num_tc_qps = 0;
1294
1295         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1296         offset = 0;
1297
1298         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1299                 /* Find numtc from enabled TC bitmap */
1300                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1301                         if (enabled_tc & (1 << i)) /* TC is enabled */
1302                                 numtc++;
1303                 }
1304                 if (!numtc) {
1305                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1306                         numtc = 1;
1307                 }
1308         } else {
1309                 /* At least TC0 is enabled in case of non-DCB case */
1310                 numtc = 1;
1311         }
1312
1313         vsi->tc_config.numtc = numtc;
1314         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1315         /* Number of queues per enabled TC */
1316         num_tc_qps = rounddown_pow_of_two(vsi->alloc_queue_pairs/numtc);
1317         num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
1318
1319         /* Setup queue offset/count for all TCs for given VSI */
1320         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1321                 /* See if the given TC is enabled for the given VSI */
1322                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1323                         int pow, num_qps;
1324
1325                         switch (vsi->type) {
1326                         case I40E_VSI_MAIN:
1327                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1328                                 break;
1329                         case I40E_VSI_FDIR:
1330                         case I40E_VSI_SRIOV:
1331                         case I40E_VSI_VMDQ2:
1332                         default:
1333                                 qcount = num_tc_qps;
1334                                 WARN_ON(i != 0);
1335                                 break;
1336                         }
1337                         vsi->tc_config.tc_info[i].qoffset = offset;
1338                         vsi->tc_config.tc_info[i].qcount = qcount;
1339
1340                         /* find the power-of-2 of the number of queue pairs */
1341                         num_qps = qcount;
1342                         pow = 0;
1343                         while (num_qps && ((1 << pow) < qcount)) {
1344                                 pow++;
1345                                 num_qps >>= 1;
1346                         }
1347
1348                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1349                         qmap =
1350                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1351                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1352
1353                         offset += qcount;
1354                 } else {
1355                         /* TC is not enabled so set the offset to
1356                          * default queue and allocate one queue
1357                          * for the given TC.
1358                          */
1359                         vsi->tc_config.tc_info[i].qoffset = 0;
1360                         vsi->tc_config.tc_info[i].qcount = 1;
1361                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1362
1363                         qmap = 0;
1364                 }
1365                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1366         }
1367
1368         /* Set actual Tx/Rx queue pairs */
1369         vsi->num_queue_pairs = offset;
1370
1371         /* Scheduler section valid can only be set for ADD VSI */
1372         if (is_add) {
1373                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1374
1375                 ctxt->info.up_enable_bits = enabled_tc;
1376         }
1377         if (vsi->type == I40E_VSI_SRIOV) {
1378                 ctxt->info.mapping_flags |=
1379                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1380                 for (i = 0; i < vsi->num_queue_pairs; i++)
1381                         ctxt->info.queue_mapping[i] =
1382                                                cpu_to_le16(vsi->base_queue + i);
1383         } else {
1384                 ctxt->info.mapping_flags |=
1385                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1386                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1387         }
1388         ctxt->info.valid_sections |= cpu_to_le16(sections);
1389 }
1390
1391 /**
1392  * i40e_set_rx_mode - NDO callback to set the netdev filters
1393  * @netdev: network interface device structure
1394  **/
1395 static void i40e_set_rx_mode(struct net_device *netdev)
1396 {
1397         struct i40e_netdev_priv *np = netdev_priv(netdev);
1398         struct i40e_mac_filter *f, *ftmp;
1399         struct i40e_vsi *vsi = np->vsi;
1400         struct netdev_hw_addr *uca;
1401         struct netdev_hw_addr *mca;
1402         struct netdev_hw_addr *ha;
1403
1404         /* add addr if not already in the filter list */
1405         netdev_for_each_uc_addr(uca, netdev) {
1406                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1407                         if (i40e_is_vsi_in_vlan(vsi))
1408                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1409                                                      false, true);
1410                         else
1411                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1412                                                 false, true);
1413                 }
1414         }
1415
1416         netdev_for_each_mc_addr(mca, netdev) {
1417                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1418                         if (i40e_is_vsi_in_vlan(vsi))
1419                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1420                                                      false, true);
1421                         else
1422                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1423                                                 false, true);
1424                 }
1425         }
1426
1427         /* remove filter if not in netdev list */
1428         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1429                 bool found = false;
1430
1431                 if (!f->is_netdev)
1432                         continue;
1433
1434                 if (is_multicast_ether_addr(f->macaddr)) {
1435                         netdev_for_each_mc_addr(mca, netdev) {
1436                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1437                                         found = true;
1438                                         break;
1439                                 }
1440                         }
1441                 } else {
1442                         netdev_for_each_uc_addr(uca, netdev) {
1443                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1444                                         found = true;
1445                                         break;
1446                                 }
1447                         }
1448
1449                         for_each_dev_addr(netdev, ha) {
1450                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1451                                         found = true;
1452                                         break;
1453                                 }
1454                         }
1455                 }
1456                 if (!found)
1457                         i40e_del_filter(
1458                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1459         }
1460
1461         /* check for other flag changes */
1462         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1463                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1464                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1465         }
1466 }
1467
1468 /**
1469  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1470  * @vsi: ptr to the VSI
1471  *
1472  * Push any outstanding VSI filter changes through the AdminQ.
1473  *
1474  * Returns 0 or error value
1475  **/
1476 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1477 {
1478         struct i40e_mac_filter *f, *ftmp;
1479         bool promisc_forced_on = false;
1480         bool add_happened = false;
1481         int filter_list_len = 0;
1482         u32 changed_flags = 0;
1483         i40e_status aq_ret = 0;
1484         struct i40e_pf *pf;
1485         int num_add = 0;
1486         int num_del = 0;
1487         u16 cmd_flags;
1488
1489         /* empty array typed pointers, kcalloc later */
1490         struct i40e_aqc_add_macvlan_element_data *add_list;
1491         struct i40e_aqc_remove_macvlan_element_data *del_list;
1492
1493         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1494                 usleep_range(1000, 2000);
1495         pf = vsi->back;
1496
1497         if (vsi->netdev) {
1498                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1499                 vsi->current_netdev_flags = vsi->netdev->flags;
1500         }
1501
1502         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1503                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1504
1505                 filter_list_len = pf->hw.aq.asq_buf_size /
1506                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1507                 del_list = kcalloc(filter_list_len,
1508                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1509                             GFP_KERNEL);
1510                 if (!del_list)
1511                         return -ENOMEM;
1512
1513                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1514                         if (!f->changed)
1515                                 continue;
1516
1517                         if (f->counter != 0)
1518                                 continue;
1519                         f->changed = false;
1520                         cmd_flags = 0;
1521
1522                         /* add to delete list */
1523                         memcpy(del_list[num_del].mac_addr,
1524                                f->macaddr, ETH_ALEN);
1525                         del_list[num_del].vlan_tag =
1526                                 cpu_to_le16((u16)(f->vlan ==
1527                                             I40E_VLAN_ANY ? 0 : f->vlan));
1528
1529                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1530                         del_list[num_del].flags = cmd_flags;
1531                         num_del++;
1532
1533                         /* unlink from filter list */
1534                         list_del(&f->list);
1535                         kfree(f);
1536
1537                         /* flush a full buffer */
1538                         if (num_del == filter_list_len) {
1539                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1540                                             vsi->seid, del_list, num_del,
1541                                             NULL);
1542                                 num_del = 0;
1543                                 memset(del_list, 0, sizeof(*del_list));
1544
1545                                 if (aq_ret)
1546                                         dev_info(&pf->pdev->dev,
1547                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1548                                                  aq_ret,
1549                                                  pf->hw.aq.asq_last_status);
1550                         }
1551                 }
1552                 if (num_del) {
1553                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1554                                                      del_list, num_del, NULL);
1555                         num_del = 0;
1556
1557                         if (aq_ret)
1558                                 dev_info(&pf->pdev->dev,
1559                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1560                                          aq_ret, pf->hw.aq.asq_last_status);
1561                 }
1562
1563                 kfree(del_list);
1564                 del_list = NULL;
1565
1566                 /* do all the adds now */
1567                 filter_list_len = pf->hw.aq.asq_buf_size /
1568                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1569                 add_list = kcalloc(filter_list_len,
1570                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1571                                GFP_KERNEL);
1572                 if (!add_list)
1573                         return -ENOMEM;
1574
1575                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1576                         if (!f->changed)
1577                                 continue;
1578
1579                         if (f->counter == 0)
1580                                 continue;
1581                         f->changed = false;
1582                         add_happened = true;
1583                         cmd_flags = 0;
1584
1585                         /* add to add array */
1586                         memcpy(add_list[num_add].mac_addr,
1587                                f->macaddr, ETH_ALEN);
1588                         add_list[num_add].vlan_tag =
1589                                 cpu_to_le16(
1590                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1591                         add_list[num_add].queue_number = 0;
1592
1593                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1594                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1595                         num_add++;
1596
1597                         /* flush a full buffer */
1598                         if (num_add == filter_list_len) {
1599                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1600                                                              add_list, num_add,
1601                                                              NULL);
1602                                 num_add = 0;
1603
1604                                 if (aq_ret)
1605                                         break;
1606                                 memset(add_list, 0, sizeof(*add_list));
1607                         }
1608                 }
1609                 if (num_add) {
1610                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1611                                                      add_list, num_add, NULL);
1612                         num_add = 0;
1613                 }
1614                 kfree(add_list);
1615                 add_list = NULL;
1616
1617                 if (add_happened && (!aq_ret)) {
1618                         /* do nothing */;
1619                 } else if (add_happened && (aq_ret)) {
1620                         dev_info(&pf->pdev->dev,
1621                                  "add filter failed, err %d, aq_err %d\n",
1622                                  aq_ret, pf->hw.aq.asq_last_status);
1623                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1624                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1625                                       &vsi->state)) {
1626                                 promisc_forced_on = true;
1627                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1628                                         &vsi->state);
1629                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1630                         }
1631                 }
1632         }
1633
1634         /* check for changes in promiscuous modes */
1635         if (changed_flags & IFF_ALLMULTI) {
1636                 bool cur_multipromisc;
1637                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1638                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1639                                                                vsi->seid,
1640                                                                cur_multipromisc,
1641                                                                NULL);
1642                 if (aq_ret)
1643                         dev_info(&pf->pdev->dev,
1644                                  "set multi promisc failed, err %d, aq_err %d\n",
1645                                  aq_ret, pf->hw.aq.asq_last_status);
1646         }
1647         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1648                 bool cur_promisc;
1649                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1650                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1651                                         &vsi->state));
1652                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1653                                                              vsi->seid,
1654                                                              cur_promisc, NULL);
1655                 if (aq_ret)
1656                         dev_info(&pf->pdev->dev,
1657                                  "set uni promisc failed, err %d, aq_err %d\n",
1658                                  aq_ret, pf->hw.aq.asq_last_status);
1659                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1660                                                    vsi->seid,
1661                                                    cur_promisc, NULL);
1662                 if (aq_ret)
1663                         dev_info(&pf->pdev->dev,
1664                                  "set brdcast promisc failed, err %d, aq_err %d\n",
1665                                  aq_ret, pf->hw.aq.asq_last_status);
1666         }
1667
1668         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1669         return 0;
1670 }
1671
1672 /**
1673  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1674  * @pf: board private structure
1675  **/
1676 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1677 {
1678         int v;
1679
1680         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1681                 return;
1682         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1683
1684         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
1685                 if (pf->vsi[v] &&
1686                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1687                         i40e_sync_vsi_filters(pf->vsi[v]);
1688         }
1689 }
1690
1691 /**
1692  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1693  * @netdev: network interface device structure
1694  * @new_mtu: new value for maximum frame size
1695  *
1696  * Returns 0 on success, negative on failure
1697  **/
1698 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1699 {
1700         struct i40e_netdev_priv *np = netdev_priv(netdev);
1701         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
1702         struct i40e_vsi *vsi = np->vsi;
1703
1704         /* MTU < 68 is an error and causes problems on some kernels */
1705         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1706                 return -EINVAL;
1707
1708         netdev_info(netdev, "changing MTU from %d to %d\n",
1709                     netdev->mtu, new_mtu);
1710         netdev->mtu = new_mtu;
1711         if (netif_running(netdev))
1712                 i40e_vsi_reinit_locked(vsi);
1713
1714         return 0;
1715 }
1716
1717 /**
1718  * i40e_ioctl - Access the hwtstamp interface
1719  * @netdev: network interface device structure
1720  * @ifr: interface request data
1721  * @cmd: ioctl command
1722  **/
1723 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1724 {
1725         struct i40e_netdev_priv *np = netdev_priv(netdev);
1726         struct i40e_pf *pf = np->vsi->back;
1727
1728         switch (cmd) {
1729         case SIOCGHWTSTAMP:
1730                 return i40e_ptp_get_ts_config(pf, ifr);
1731         case SIOCSHWTSTAMP:
1732                 return i40e_ptp_set_ts_config(pf, ifr);
1733         default:
1734                 return -EOPNOTSUPP;
1735         }
1736 }
1737
1738 /**
1739  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1740  * @vsi: the vsi being adjusted
1741  **/
1742 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1743 {
1744         struct i40e_vsi_context ctxt;
1745         i40e_status ret;
1746
1747         if ((vsi->info.valid_sections &
1748              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1749             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1750                 return;  /* already enabled */
1751
1752         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1753         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1754                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1755
1756         ctxt.seid = vsi->seid;
1757         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1758         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1759         if (ret) {
1760                 dev_info(&vsi->back->pdev->dev,
1761                          "%s: update vsi failed, aq_err=%d\n",
1762                          __func__, vsi->back->hw.aq.asq_last_status);
1763         }
1764 }
1765
1766 /**
1767  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1768  * @vsi: the vsi being adjusted
1769  **/
1770 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1771 {
1772         struct i40e_vsi_context ctxt;
1773         i40e_status ret;
1774
1775         if ((vsi->info.valid_sections &
1776              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1777             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1778              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1779                 return;  /* already disabled */
1780
1781         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1782         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1783                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1784
1785         ctxt.seid = vsi->seid;
1786         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1787         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1788         if (ret) {
1789                 dev_info(&vsi->back->pdev->dev,
1790                          "%s: update vsi failed, aq_err=%d\n",
1791                          __func__, vsi->back->hw.aq.asq_last_status);
1792         }
1793 }
1794
1795 /**
1796  * i40e_vlan_rx_register - Setup or shutdown vlan offload
1797  * @netdev: network interface to be adjusted
1798  * @features: netdev features to test if VLAN offload is enabled or not
1799  **/
1800 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
1801 {
1802         struct i40e_netdev_priv *np = netdev_priv(netdev);
1803         struct i40e_vsi *vsi = np->vsi;
1804
1805         if (features & NETIF_F_HW_VLAN_CTAG_RX)
1806                 i40e_vlan_stripping_enable(vsi);
1807         else
1808                 i40e_vlan_stripping_disable(vsi);
1809 }
1810
1811 /**
1812  * i40e_vsi_add_vlan - Add vsi membership for given vlan
1813  * @vsi: the vsi being configured
1814  * @vid: vlan id to be added (0 = untagged only , -1 = any)
1815  **/
1816 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
1817 {
1818         struct i40e_mac_filter *f, *add_f;
1819         bool is_netdev, is_vf;
1820
1821         is_vf = (vsi->type == I40E_VSI_SRIOV);
1822         is_netdev = !!(vsi->netdev);
1823
1824         if (is_netdev) {
1825                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
1826                                         is_vf, is_netdev);
1827                 if (!add_f) {
1828                         dev_info(&vsi->back->pdev->dev,
1829                                  "Could not add vlan filter %d for %pM\n",
1830                                  vid, vsi->netdev->dev_addr);
1831                         return -ENOMEM;
1832                 }
1833         }
1834
1835         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1836                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
1837                 if (!add_f) {
1838                         dev_info(&vsi->back->pdev->dev,
1839                                  "Could not add vlan filter %d for %pM\n",
1840                                  vid, f->macaddr);
1841                         return -ENOMEM;
1842                 }
1843         }
1844
1845         /* Now if we add a vlan tag, make sure to check if it is the first
1846          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
1847          * with 0, so we now accept untagged and specified tagged traffic
1848          * (and not any taged and untagged)
1849          */
1850         if (vid > 0) {
1851                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
1852                                                   I40E_VLAN_ANY,
1853                                                   is_vf, is_netdev)) {
1854                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
1855                                         I40E_VLAN_ANY, is_vf, is_netdev);
1856                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
1857                                                 is_vf, is_netdev);
1858                         if (!add_f) {
1859                                 dev_info(&vsi->back->pdev->dev,
1860                                          "Could not add filter 0 for %pM\n",
1861                                          vsi->netdev->dev_addr);
1862                                 return -ENOMEM;
1863                         }
1864                 }
1865         }
1866
1867         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
1868         if (vid > 0 && !vsi->info.pvid) {
1869                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1870                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1871                                              is_vf, is_netdev)) {
1872                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1873                                                 is_vf, is_netdev);
1874                                 add_f = i40e_add_filter(vsi, f->macaddr,
1875                                                         0, is_vf, is_netdev);
1876                                 if (!add_f) {
1877                                         dev_info(&vsi->back->pdev->dev,
1878                                                  "Could not add filter 0 for %pM\n",
1879                                                  f->macaddr);
1880                                         return -ENOMEM;
1881                                 }
1882                         }
1883                 }
1884         }
1885
1886         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1887             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1888                 return 0;
1889
1890         return i40e_sync_vsi_filters(vsi);
1891 }
1892
1893 /**
1894  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
1895  * @vsi: the vsi being configured
1896  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
1897  *
1898  * Return: 0 on success or negative otherwise
1899  **/
1900 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
1901 {
1902         struct net_device *netdev = vsi->netdev;
1903         struct i40e_mac_filter *f, *add_f;
1904         bool is_vf, is_netdev;
1905         int filter_count = 0;
1906
1907         is_vf = (vsi->type == I40E_VSI_SRIOV);
1908         is_netdev = !!(netdev);
1909
1910         if (is_netdev)
1911                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
1912
1913         list_for_each_entry(f, &vsi->mac_filter_list, list)
1914                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
1915
1916         /* go through all the filters for this VSI and if there is only
1917          * vid == 0 it means there are no other filters, so vid 0 must
1918          * be replaced with -1. This signifies that we should from now
1919          * on accept any traffic (with any tag present, or untagged)
1920          */
1921         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1922                 if (is_netdev) {
1923                         if (f->vlan &&
1924                             ether_addr_equal(netdev->dev_addr, f->macaddr))
1925                                 filter_count++;
1926                 }
1927
1928                 if (f->vlan)
1929                         filter_count++;
1930         }
1931
1932         if (!filter_count && is_netdev) {
1933                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
1934                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1935                                     is_vf, is_netdev);
1936                 if (!f) {
1937                         dev_info(&vsi->back->pdev->dev,
1938                                  "Could not add filter %d for %pM\n",
1939                                  I40E_VLAN_ANY, netdev->dev_addr);
1940                         return -ENOMEM;
1941                 }
1942         }
1943
1944         if (!filter_count) {
1945                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1946                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
1947                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1948                                             is_vf, is_netdev);
1949                         if (!add_f) {
1950                                 dev_info(&vsi->back->pdev->dev,
1951                                          "Could not add filter %d for %pM\n",
1952                                          I40E_VLAN_ANY, f->macaddr);
1953                                 return -ENOMEM;
1954                         }
1955                 }
1956         }
1957
1958         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1959             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1960                 return 0;
1961
1962         return i40e_sync_vsi_filters(vsi);
1963 }
1964
1965 /**
1966  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
1967  * @netdev: network interface to be adjusted
1968  * @vid: vlan id to be added
1969  *
1970  * net_device_ops implementation for adding vlan ids
1971  **/
1972 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
1973                                 __always_unused __be16 proto, u16 vid)
1974 {
1975         struct i40e_netdev_priv *np = netdev_priv(netdev);
1976         struct i40e_vsi *vsi = np->vsi;
1977         int ret = 0;
1978
1979         if (vid > 4095)
1980                 return -EINVAL;
1981
1982         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
1983
1984         /* If the network stack called us with vid = 0 then
1985          * it is asking to receive priority tagged packets with
1986          * vlan id 0.  Our HW receives them by default when configured
1987          * to receive untagged packets so there is no need to add an
1988          * extra filter for vlan 0 tagged packets.
1989          */
1990         if (vid)
1991                 ret = i40e_vsi_add_vlan(vsi, vid);
1992
1993         if (!ret && (vid < VLAN_N_VID))
1994                 set_bit(vid, vsi->active_vlans);
1995
1996         return ret;
1997 }
1998
1999 /**
2000  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2001  * @netdev: network interface to be adjusted
2002  * @vid: vlan id to be removed
2003  *
2004  * net_device_ops implementation for removing vlan ids
2005  **/
2006 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2007                                  __always_unused __be16 proto, u16 vid)
2008 {
2009         struct i40e_netdev_priv *np = netdev_priv(netdev);
2010         struct i40e_vsi *vsi = np->vsi;
2011
2012         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2013
2014         /* return code is ignored as there is nothing a user
2015          * can do about failure to remove and a log message was
2016          * already printed from the other function
2017          */
2018         i40e_vsi_kill_vlan(vsi, vid);
2019
2020         clear_bit(vid, vsi->active_vlans);
2021
2022         return 0;
2023 }
2024
2025 /**
2026  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2027  * @vsi: the vsi being brought back up
2028  **/
2029 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2030 {
2031         u16 vid;
2032
2033         if (!vsi->netdev)
2034                 return;
2035
2036         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2037
2038         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2039                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2040                                      vid);
2041 }
2042
2043 /**
2044  * i40e_vsi_add_pvid - Add pvid for the VSI
2045  * @vsi: the vsi being adjusted
2046  * @vid: the vlan id to set as a PVID
2047  **/
2048 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2049 {
2050         struct i40e_vsi_context ctxt;
2051         i40e_status aq_ret;
2052
2053         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2054         vsi->info.pvid = cpu_to_le16(vid);
2055         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2056                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2057                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2058
2059         ctxt.seid = vsi->seid;
2060         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2061         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2062         if (aq_ret) {
2063                 dev_info(&vsi->back->pdev->dev,
2064                          "%s: update vsi failed, aq_err=%d\n",
2065                          __func__, vsi->back->hw.aq.asq_last_status);
2066                 return -ENOENT;
2067         }
2068
2069         return 0;
2070 }
2071
2072 /**
2073  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2074  * @vsi: the vsi being adjusted
2075  *
2076  * Just use the vlan_rx_register() service to put it back to normal
2077  **/
2078 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2079 {
2080         i40e_vlan_stripping_disable(vsi);
2081
2082         vsi->info.pvid = 0;
2083 }
2084
2085 /**
2086  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2087  * @vsi: ptr to the VSI
2088  *
2089  * If this function returns with an error, then it's possible one or
2090  * more of the rings is populated (while the rest are not).  It is the
2091  * callers duty to clean those orphaned rings.
2092  *
2093  * Return 0 on success, negative on failure
2094  **/
2095 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2096 {
2097         int i, err = 0;
2098
2099         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2100                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2101
2102         return err;
2103 }
2104
2105 /**
2106  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2107  * @vsi: ptr to the VSI
2108  *
2109  * Free VSI's transmit software resources
2110  **/
2111 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2112 {
2113         int i;
2114
2115         if (!vsi->tx_rings)
2116                 return;
2117
2118         for (i = 0; i < vsi->num_queue_pairs; i++)
2119                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2120                         i40e_free_tx_resources(vsi->tx_rings[i]);
2121 }
2122
2123 /**
2124  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2125  * @vsi: ptr to the VSI
2126  *
2127  * If this function returns with an error, then it's possible one or
2128  * more of the rings is populated (while the rest are not).  It is the
2129  * callers duty to clean those orphaned rings.
2130  *
2131  * Return 0 on success, negative on failure
2132  **/
2133 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2134 {
2135         int i, err = 0;
2136
2137         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2138                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2139         return err;
2140 }
2141
2142 /**
2143  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2144  * @vsi: ptr to the VSI
2145  *
2146  * Free all receive software resources
2147  **/
2148 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2149 {
2150         int i;
2151
2152         if (!vsi->rx_rings)
2153                 return;
2154
2155         for (i = 0; i < vsi->num_queue_pairs; i++)
2156                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2157                         i40e_free_rx_resources(vsi->rx_rings[i]);
2158 }
2159
2160 /**
2161  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2162  * @ring: The Tx ring to configure
2163  *
2164  * Configure the Tx descriptor ring in the HMC context.
2165  **/
2166 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2167 {
2168         struct i40e_vsi *vsi = ring->vsi;
2169         u16 pf_q = vsi->base_queue + ring->queue_index;
2170         struct i40e_hw *hw = &vsi->back->hw;
2171         struct i40e_hmc_obj_txq tx_ctx;
2172         i40e_status err = 0;
2173         u32 qtx_ctl = 0;
2174
2175         /* some ATR related tx ring init */
2176         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2177                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2178                 ring->atr_count = 0;
2179         } else {
2180                 ring->atr_sample_rate = 0;
2181         }
2182
2183         /* initialize XPS */
2184         if (ring->q_vector && ring->netdev &&
2185             vsi->tc_config.numtc <= 1 &&
2186             !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2187                 netif_set_xps_queue(ring->netdev,
2188                                     &ring->q_vector->affinity_mask,
2189                                     ring->queue_index);
2190
2191         /* clear the context structure first */
2192         memset(&tx_ctx, 0, sizeof(tx_ctx));
2193
2194         tx_ctx.new_context = 1;
2195         tx_ctx.base = (ring->dma / 128);
2196         tx_ctx.qlen = ring->count;
2197         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2198                                                I40E_FLAG_FD_ATR_ENABLED));
2199         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2200         /* FDIR VSI tx ring can still use RS bit and writebacks */
2201         if (vsi->type != I40E_VSI_FDIR)
2202                 tx_ctx.head_wb_ena = 1;
2203         tx_ctx.head_wb_addr = ring->dma +
2204                               (ring->count * sizeof(struct i40e_tx_desc));
2205
2206         /* As part of VSI creation/update, FW allocates certain
2207          * Tx arbitration queue sets for each TC enabled for
2208          * the VSI. The FW returns the handles to these queue
2209          * sets as part of the response buffer to Add VSI,
2210          * Update VSI, etc. AQ commands. It is expected that
2211          * these queue set handles be associated with the Tx
2212          * queues by the driver as part of the TX queue context
2213          * initialization. This has to be done regardless of
2214          * DCB as by default everything is mapped to TC0.
2215          */
2216         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2217         tx_ctx.rdylist_act = 0;
2218
2219         /* clear the context in the HMC */
2220         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2221         if (err) {
2222                 dev_info(&vsi->back->pdev->dev,
2223                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2224                          ring->queue_index, pf_q, err);
2225                 return -ENOMEM;
2226         }
2227
2228         /* set the context in the HMC */
2229         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2230         if (err) {
2231                 dev_info(&vsi->back->pdev->dev,
2232                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2233                          ring->queue_index, pf_q, err);
2234                 return -ENOMEM;
2235         }
2236
2237         /* Now associate this queue with this PCI function */
2238         if (vsi->type == I40E_VSI_VMDQ2)
2239                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2240         else
2241                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2242         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2243                     I40E_QTX_CTL_PF_INDX_MASK);
2244         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2245         i40e_flush(hw);
2246
2247         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2248
2249         /* cache tail off for easier writes later */
2250         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2251
2252         return 0;
2253 }
2254
2255 /**
2256  * i40e_configure_rx_ring - Configure a receive ring context
2257  * @ring: The Rx ring to configure
2258  *
2259  * Configure the Rx descriptor ring in the HMC context.
2260  **/
2261 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2262 {
2263         struct i40e_vsi *vsi = ring->vsi;
2264         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2265         u16 pf_q = vsi->base_queue + ring->queue_index;
2266         struct i40e_hw *hw = &vsi->back->hw;
2267         struct i40e_hmc_obj_rxq rx_ctx;
2268         i40e_status err = 0;
2269
2270         ring->state = 0;
2271
2272         /* clear the context structure first */
2273         memset(&rx_ctx, 0, sizeof(rx_ctx));
2274
2275         ring->rx_buf_len = vsi->rx_buf_len;
2276         ring->rx_hdr_len = vsi->rx_hdr_len;
2277
2278         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2279         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2280
2281         rx_ctx.base = (ring->dma / 128);
2282         rx_ctx.qlen = ring->count;
2283
2284         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2285                 set_ring_16byte_desc_enabled(ring);
2286                 rx_ctx.dsize = 0;
2287         } else {
2288                 rx_ctx.dsize = 1;
2289         }
2290
2291         rx_ctx.dtype = vsi->dtype;
2292         if (vsi->dtype) {
2293                 set_ring_ps_enabled(ring);
2294                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2295                                   I40E_RX_SPLIT_IP      |
2296                                   I40E_RX_SPLIT_TCP_UDP |
2297                                   I40E_RX_SPLIT_SCTP;
2298         } else {
2299                 rx_ctx.hsplit_0 = 0;
2300         }
2301
2302         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2303                                   (chain_len * ring->rx_buf_len));
2304         rx_ctx.tphrdesc_ena = 1;
2305         rx_ctx.tphwdesc_ena = 1;
2306         rx_ctx.tphdata_ena = 1;
2307         rx_ctx.tphhead_ena = 1;
2308         if (hw->revision_id == 0)
2309                 rx_ctx.lrxqthresh = 0;
2310         else
2311                 rx_ctx.lrxqthresh = 2;
2312         rx_ctx.crcstrip = 1;
2313         rx_ctx.l2tsel = 1;
2314         rx_ctx.showiv = 1;
2315         /* set the prefena field to 1 because the manual says to */
2316         rx_ctx.prefena = 1;
2317
2318         /* clear the context in the HMC */
2319         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2320         if (err) {
2321                 dev_info(&vsi->back->pdev->dev,
2322                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2323                          ring->queue_index, pf_q, err);
2324                 return -ENOMEM;
2325         }
2326
2327         /* set the context in the HMC */
2328         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2329         if (err) {
2330                 dev_info(&vsi->back->pdev->dev,
2331                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2332                          ring->queue_index, pf_q, err);
2333                 return -ENOMEM;
2334         }
2335
2336         /* cache tail for quicker writes, and clear the reg before use */
2337         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2338         writel(0, ring->tail);
2339
2340         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2341
2342         return 0;
2343 }
2344
2345 /**
2346  * i40e_vsi_configure_tx - Configure the VSI for Tx
2347  * @vsi: VSI structure describing this set of rings and resources
2348  *
2349  * Configure the Tx VSI for operation.
2350  **/
2351 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2352 {
2353         int err = 0;
2354         u16 i;
2355
2356         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2357                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2358
2359         return err;
2360 }
2361
2362 /**
2363  * i40e_vsi_configure_rx - Configure the VSI for Rx
2364  * @vsi: the VSI being configured
2365  *
2366  * Configure the Rx VSI for operation.
2367  **/
2368 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2369 {
2370         int err = 0;
2371         u16 i;
2372
2373         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2374                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2375                                + ETH_FCS_LEN + VLAN_HLEN;
2376         else
2377                 vsi->max_frame = I40E_RXBUFFER_2048;
2378
2379         /* figure out correct receive buffer length */
2380         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2381                                     I40E_FLAG_RX_PS_ENABLED)) {
2382         case I40E_FLAG_RX_1BUF_ENABLED:
2383                 vsi->rx_hdr_len = 0;
2384                 vsi->rx_buf_len = vsi->max_frame;
2385                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2386                 break;
2387         case I40E_FLAG_RX_PS_ENABLED:
2388                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2389                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2390                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2391                 break;
2392         default:
2393                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2394                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2395                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2396                 break;
2397         }
2398
2399         /* round up for the chip's needs */
2400         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2401                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2402         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2403                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2404
2405         /* set up individual rings */
2406         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2407                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2408
2409         return err;
2410 }
2411
2412 /**
2413  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2414  * @vsi: ptr to the VSI
2415  **/
2416 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2417 {
2418         u16 qoffset, qcount;
2419         int i, n;
2420
2421         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2422                 return;
2423
2424         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2425                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2426                         continue;
2427
2428                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2429                 qcount = vsi->tc_config.tc_info[n].qcount;
2430                 for (i = qoffset; i < (qoffset + qcount); i++) {
2431                         struct i40e_ring *rx_ring = vsi->rx_rings[i];
2432                         struct i40e_ring *tx_ring = vsi->tx_rings[i];
2433                         rx_ring->dcb_tc = n;
2434                         tx_ring->dcb_tc = n;
2435                 }
2436         }
2437 }
2438
2439 /**
2440  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2441  * @vsi: ptr to the VSI
2442  **/
2443 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2444 {
2445         if (vsi->netdev)
2446                 i40e_set_rx_mode(vsi->netdev);
2447 }
2448
2449 /**
2450  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2451  * @vsi: Pointer to the targeted VSI
2452  *
2453  * This function replays the hlist on the hw where all the SB Flow Director
2454  * filters were saved.
2455  **/
2456 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2457 {
2458         struct i40e_fdir_filter *filter;
2459         struct i40e_pf *pf = vsi->back;
2460         struct hlist_node *node;
2461
2462         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2463                 return;
2464
2465         hlist_for_each_entry_safe(filter, node,
2466                                   &pf->fdir_filter_list, fdir_node) {
2467                 i40e_add_del_fdir(vsi, filter, true);
2468         }
2469 }
2470
2471 /**
2472  * i40e_vsi_configure - Set up the VSI for action
2473  * @vsi: the VSI being configured
2474  **/
2475 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2476 {
2477         int err;
2478
2479         i40e_set_vsi_rx_mode(vsi);
2480         i40e_restore_vlan(vsi);
2481         i40e_vsi_config_dcb_rings(vsi);
2482         err = i40e_vsi_configure_tx(vsi);
2483         if (!err)
2484                 err = i40e_vsi_configure_rx(vsi);
2485
2486         return err;
2487 }
2488
2489 /**
2490  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2491  * @vsi: the VSI being configured
2492  **/
2493 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2494 {
2495         struct i40e_pf *pf = vsi->back;
2496         struct i40e_q_vector *q_vector;
2497         struct i40e_hw *hw = &pf->hw;
2498         u16 vector;
2499         int i, q;
2500         u32 val;
2501         u32 qp;
2502
2503         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2504          * and PFINT_LNKLSTn registers, e.g.:
2505          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2506          */
2507         qp = vsi->base_queue;
2508         vector = vsi->base_vector;
2509         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2510                 q_vector = vsi->q_vectors[i];
2511                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2512                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2513                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2514                      q_vector->rx.itr);
2515                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2516                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2517                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2518                      q_vector->tx.itr);
2519
2520                 /* Linked list for the queuepairs assigned to this vector */
2521                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2522                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2523                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2524                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2525                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2526                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2527                               (I40E_QUEUE_TYPE_TX
2528                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2529
2530                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2531
2532                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2533                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2534                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2535                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2536                               (I40E_QUEUE_TYPE_RX
2537                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2538
2539                         /* Terminate the linked list */
2540                         if (q == (q_vector->num_ringpairs - 1))
2541                                 val |= (I40E_QUEUE_END_OF_LIST
2542                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2543
2544                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2545                         qp++;
2546                 }
2547         }
2548
2549         i40e_flush(hw);
2550 }
2551
2552 /**
2553  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2554  * @hw: ptr to the hardware info
2555  **/
2556 static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
2557 {
2558         u32 val;
2559
2560         /* clear things first */
2561         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2562         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2563
2564         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2565               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2566               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2567               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2568               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2569               I40E_PFINT_ICR0_ENA_TIMESYNC_MASK      |
2570               I40E_PFINT_ICR0_ENA_STORM_DETECT_MASK  |
2571               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2572               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2573               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2574
2575         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2576
2577         /* SW_ITR_IDX = 0, but don't change INTENA */
2578         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2579                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2580
2581         /* OTHER_ITR_IDX = 0 */
2582         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2583 }
2584
2585 /**
2586  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2587  * @vsi: the VSI being configured
2588  **/
2589 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2590 {
2591         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2592         struct i40e_pf *pf = vsi->back;
2593         struct i40e_hw *hw = &pf->hw;
2594         u32 val;
2595
2596         /* set the ITR configuration */
2597         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2598         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2599         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2600         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2601         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2602         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2603
2604         i40e_enable_misc_int_causes(hw);
2605
2606         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2607         wr32(hw, I40E_PFINT_LNKLST0, 0);
2608
2609         /* Associate the queue pair to the vector and enable the queue int */
2610         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2611               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2612               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2613
2614         wr32(hw, I40E_QINT_RQCTL(0), val);
2615
2616         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2617               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2618               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2619
2620         wr32(hw, I40E_QINT_TQCTL(0), val);
2621         i40e_flush(hw);
2622 }
2623
2624 /**
2625  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2626  * @pf: board private structure
2627  **/
2628 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2629 {
2630         struct i40e_hw *hw = &pf->hw;
2631
2632         wr32(hw, I40E_PFINT_DYN_CTL0,
2633              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2634         i40e_flush(hw);
2635 }
2636
2637 /**
2638  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2639  * @pf: board private structure
2640  **/
2641 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2642 {
2643         struct i40e_hw *hw = &pf->hw;
2644         u32 val;
2645
2646         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2647               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2648               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2649
2650         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2651         i40e_flush(hw);
2652 }
2653
2654 /**
2655  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2656  * @vsi: pointer to a vsi
2657  * @vector: enable a particular Hw Interrupt vector
2658  **/
2659 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2660 {
2661         struct i40e_pf *pf = vsi->back;
2662         struct i40e_hw *hw = &pf->hw;
2663         u32 val;
2664
2665         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2666               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2667               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2668         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2669         /* skip the flush */
2670 }
2671
2672 /**
2673  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2674  * @irq: interrupt number
2675  * @data: pointer to a q_vector
2676  **/
2677 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2678 {
2679         struct i40e_q_vector *q_vector = data;
2680
2681         if (!q_vector->tx.ring && !q_vector->rx.ring)
2682                 return IRQ_HANDLED;
2683
2684         napi_schedule(&q_vector->napi);
2685
2686         return IRQ_HANDLED;
2687 }
2688
2689 /**
2690  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2691  * @vsi: the VSI being configured
2692  * @basename: name for the vector
2693  *
2694  * Allocates MSI-X vectors and requests interrupts from the kernel.
2695  **/
2696 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2697 {
2698         int q_vectors = vsi->num_q_vectors;
2699         struct i40e_pf *pf = vsi->back;
2700         int base = vsi->base_vector;
2701         int rx_int_idx = 0;
2702         int tx_int_idx = 0;
2703         int vector, err;
2704
2705         for (vector = 0; vector < q_vectors; vector++) {
2706                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2707
2708                 if (q_vector->tx.ring && q_vector->rx.ring) {
2709                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2710                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2711                         tx_int_idx++;
2712                 } else if (q_vector->rx.ring) {
2713                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2714                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
2715                 } else if (q_vector->tx.ring) {
2716                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2717                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
2718                 } else {
2719                         /* skip this unused q_vector */
2720                         continue;
2721                 }
2722                 err = request_irq(pf->msix_entries[base + vector].vector,
2723                                   vsi->irq_handler,
2724                                   0,
2725                                   q_vector->name,
2726                                   q_vector);
2727                 if (err) {
2728                         dev_info(&pf->pdev->dev,
2729                                  "%s: request_irq failed, error: %d\n",
2730                                  __func__, err);
2731                         goto free_queue_irqs;
2732                 }
2733                 /* assign the mask for this irq */
2734                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2735                                       &q_vector->affinity_mask);
2736         }
2737
2738         return 0;
2739
2740 free_queue_irqs:
2741         while (vector) {
2742                 vector--;
2743                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2744                                       NULL);
2745                 free_irq(pf->msix_entries[base + vector].vector,
2746                          &(vsi->q_vectors[vector]));
2747         }
2748         return err;
2749 }
2750
2751 /**
2752  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
2753  * @vsi: the VSI being un-configured
2754  **/
2755 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
2756 {
2757         struct i40e_pf *pf = vsi->back;
2758         struct i40e_hw *hw = &pf->hw;
2759         int base = vsi->base_vector;
2760         int i;
2761
2762         for (i = 0; i < vsi->num_queue_pairs; i++) {
2763                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
2764                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
2765         }
2766
2767         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2768                 for (i = vsi->base_vector;
2769                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2770                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
2771
2772                 i40e_flush(hw);
2773                 for (i = 0; i < vsi->num_q_vectors; i++)
2774                         synchronize_irq(pf->msix_entries[i + base].vector);
2775         } else {
2776                 /* Legacy and MSI mode - this stops all interrupt handling */
2777                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
2778                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
2779                 i40e_flush(hw);
2780                 synchronize_irq(pf->pdev->irq);
2781         }
2782 }
2783
2784 /**
2785  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
2786  * @vsi: the VSI being configured
2787  **/
2788 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
2789 {
2790         struct i40e_pf *pf = vsi->back;
2791         int i;
2792
2793         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2794                 for (i = vsi->base_vector;
2795                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2796                         i40e_irq_dynamic_enable(vsi, i);
2797         } else {
2798                 i40e_irq_dynamic_enable_icr0(pf);
2799         }
2800
2801         i40e_flush(&pf->hw);
2802         return 0;
2803 }
2804
2805 /**
2806  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
2807  * @pf: board private structure
2808  **/
2809 static void i40e_stop_misc_vector(struct i40e_pf *pf)
2810 {
2811         /* Disable ICR 0 */
2812         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
2813         i40e_flush(&pf->hw);
2814 }
2815
2816 /**
2817  * i40e_intr - MSI/Legacy and non-queue interrupt handler
2818  * @irq: interrupt number
2819  * @data: pointer to a q_vector
2820  *
2821  * This is the handler used for all MSI/Legacy interrupts, and deals
2822  * with both queue and non-queue interrupts.  This is also used in
2823  * MSIX mode to handle the non-queue interrupts.
2824  **/
2825 static irqreturn_t i40e_intr(int irq, void *data)
2826 {
2827         struct i40e_pf *pf = (struct i40e_pf *)data;
2828         struct i40e_hw *hw = &pf->hw;
2829         irqreturn_t ret = IRQ_NONE;
2830         u32 icr0, icr0_remaining;
2831         u32 val, ena_mask;
2832
2833         icr0 = rd32(hw, I40E_PFINT_ICR0);
2834         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
2835
2836         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
2837         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
2838                 goto enable_intr;
2839
2840         /* if interrupt but no bits showing, must be SWINT */
2841         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
2842             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
2843                 pf->sw_int_count++;
2844
2845         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
2846         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
2847
2848                 /* temporarily disable queue cause for NAPI processing */
2849                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
2850                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
2851                 wr32(hw, I40E_QINT_RQCTL(0), qval);
2852
2853                 qval = rd32(hw, I40E_QINT_TQCTL(0));
2854                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
2855                 wr32(hw, I40E_QINT_TQCTL(0), qval);
2856
2857                 if (!test_bit(__I40E_DOWN, &pf->state))
2858                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
2859         }
2860
2861         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
2862                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2863                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
2864         }
2865
2866         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
2867                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
2868                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
2869         }
2870
2871         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
2872                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
2873                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
2874         }
2875
2876         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
2877                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
2878                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
2879                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
2880                 val = rd32(hw, I40E_GLGEN_RSTAT);
2881                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
2882                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
2883                 if (val == I40E_RESET_CORER) {
2884                         pf->corer_count++;
2885                 } else if (val == I40E_RESET_GLOBR) {
2886                         pf->globr_count++;
2887                 } else if (val == I40E_RESET_EMPR) {
2888                         pf->empr_count++;
2889                         set_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
2890                 }
2891         }
2892
2893         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
2894                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
2895                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
2896         }
2897
2898         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
2899                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
2900
2901                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
2902                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2903                         i40e_ptp_tx_hwtstamp(pf);
2904                 }
2905         }
2906
2907         /* If a critical error is pending we have no choice but to reset the
2908          * device.
2909          * Report and mask out any remaining unexpected interrupts.
2910          */
2911         icr0_remaining = icr0 & ena_mask;
2912         if (icr0_remaining) {
2913                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
2914                          icr0_remaining);
2915                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
2916                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
2917                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
2918                         dev_info(&pf->pdev->dev, "device will be reset\n");
2919                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2920                         i40e_service_event_schedule(pf);
2921                 }
2922                 ena_mask &= ~icr0_remaining;
2923         }
2924         ret = IRQ_HANDLED;
2925
2926 enable_intr:
2927         /* re-enable interrupt causes */
2928         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
2929         if (!test_bit(__I40E_DOWN, &pf->state)) {
2930                 i40e_service_event_schedule(pf);
2931                 i40e_irq_dynamic_enable_icr0(pf);
2932         }
2933
2934         return ret;
2935 }
2936
2937 /**
2938  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
2939  * @tx_ring:  tx ring to clean
2940  * @budget:   how many cleans we're allowed
2941  *
2942  * Returns true if there's any budget left (e.g. the clean is finished)
2943  **/
2944 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
2945 {
2946         struct i40e_vsi *vsi = tx_ring->vsi;
2947         u16 i = tx_ring->next_to_clean;
2948         struct i40e_tx_buffer *tx_buf;
2949         struct i40e_tx_desc *tx_desc;
2950
2951         tx_buf = &tx_ring->tx_bi[i];
2952         tx_desc = I40E_TX_DESC(tx_ring, i);
2953         i -= tx_ring->count;
2954
2955         do {
2956                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
2957
2958                 /* if next_to_watch is not set then there is no work pending */
2959                 if (!eop_desc)
2960                         break;
2961
2962                 /* prevent any other reads prior to eop_desc */
2963                 read_barrier_depends();
2964
2965                 /* if the descriptor isn't done, no work yet to do */
2966                 if (!(eop_desc->cmd_type_offset_bsz &
2967                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
2968                         break;
2969
2970                 /* clear next_to_watch to prevent false hangs */
2971                 tx_buf->next_to_watch = NULL;
2972
2973                 /* unmap skb header data */
2974                 dma_unmap_single(tx_ring->dev,
2975                                  dma_unmap_addr(tx_buf, dma),
2976                                  dma_unmap_len(tx_buf, len),
2977                                  DMA_TO_DEVICE);
2978
2979                 dma_unmap_len_set(tx_buf, len, 0);
2980
2981
2982                 /* move to the next desc and buffer to clean */
2983                 tx_buf++;
2984                 tx_desc++;
2985                 i++;
2986                 if (unlikely(!i)) {
2987                         i -= tx_ring->count;
2988                         tx_buf = tx_ring->tx_bi;
2989                         tx_desc = I40E_TX_DESC(tx_ring, 0);
2990                 }
2991
2992                 /* update budget accounting */
2993                 budget--;
2994         } while (likely(budget));
2995
2996         i += tx_ring->count;
2997         tx_ring->next_to_clean = i;
2998
2999         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3000                 i40e_irq_dynamic_enable(vsi,
3001                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3002         }
3003         return budget > 0;
3004 }
3005
3006 /**
3007  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3008  * @irq: interrupt number
3009  * @data: pointer to a q_vector
3010  **/
3011 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3012 {
3013         struct i40e_q_vector *q_vector = data;
3014         struct i40e_vsi *vsi;
3015
3016         if (!q_vector->tx.ring)
3017                 return IRQ_HANDLED;
3018
3019         vsi = q_vector->tx.ring->vsi;
3020         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3021
3022         return IRQ_HANDLED;
3023 }
3024
3025 /**
3026  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3027  * @vsi: the VSI being configured
3028  * @v_idx: vector index
3029  * @qp_idx: queue pair index
3030  **/
3031 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3032 {
3033         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3034         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3035         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3036
3037         tx_ring->q_vector = q_vector;
3038         tx_ring->next = q_vector->tx.ring;
3039         q_vector->tx.ring = tx_ring;
3040         q_vector->tx.count++;
3041
3042         rx_ring->q_vector = q_vector;
3043         rx_ring->next = q_vector->rx.ring;
3044         q_vector->rx.ring = rx_ring;
3045         q_vector->rx.count++;
3046 }
3047
3048 /**
3049  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3050  * @vsi: the VSI being configured
3051  *
3052  * This function maps descriptor rings to the queue-specific vectors
3053  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3054  * one vector per queue pair, but on a constrained vector budget, we
3055  * group the queue pairs as "efficiently" as possible.
3056  **/
3057 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3058 {
3059         int qp_remaining = vsi->num_queue_pairs;
3060         int q_vectors = vsi->num_q_vectors;
3061         int num_ringpairs;
3062         int v_start = 0;
3063         int qp_idx = 0;
3064
3065         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3066          * group them so there are multiple queues per vector.
3067          */
3068         for (; v_start < q_vectors && qp_remaining; v_start++) {
3069                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3070
3071                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3072
3073                 q_vector->num_ringpairs = num_ringpairs;
3074
3075                 q_vector->rx.count = 0;
3076                 q_vector->tx.count = 0;
3077                 q_vector->rx.ring = NULL;
3078                 q_vector->tx.ring = NULL;
3079
3080                 while (num_ringpairs--) {
3081                         map_vector_to_qp(vsi, v_start, qp_idx);
3082                         qp_idx++;
3083                         qp_remaining--;
3084                 }
3085         }
3086 }
3087
3088 /**
3089  * i40e_vsi_request_irq - Request IRQ from the OS
3090  * @vsi: the VSI being configured
3091  * @basename: name for the vector
3092  **/
3093 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3094 {
3095         struct i40e_pf *pf = vsi->back;
3096         int err;
3097
3098         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3099                 err = i40e_vsi_request_irq_msix(vsi, basename);
3100         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3101                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3102                                   pf->misc_int_name, pf);
3103         else
3104                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3105                                   pf->misc_int_name, pf);
3106
3107         if (err)
3108                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3109
3110         return err;
3111 }
3112
3113 #ifdef CONFIG_NET_POLL_CONTROLLER
3114 /**
3115  * i40e_netpoll - A Polling 'interrupt'handler
3116  * @netdev: network interface device structure
3117  *
3118  * This is used by netconsole to send skbs without having to re-enable
3119  * interrupts.  It's not called while the normal interrupt routine is executing.
3120  **/
3121 static void i40e_netpoll(struct net_device *netdev)
3122 {
3123         struct i40e_netdev_priv *np = netdev_priv(netdev);
3124         struct i40e_vsi *vsi = np->vsi;
3125         struct i40e_pf *pf = vsi->back;
3126         int i;
3127
3128         /* if interface is down do nothing */
3129         if (test_bit(__I40E_DOWN, &vsi->state))
3130                 return;
3131
3132         pf->flags |= I40E_FLAG_IN_NETPOLL;
3133         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3134                 for (i = 0; i < vsi->num_q_vectors; i++)
3135                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3136         } else {
3137                 i40e_intr(pf->pdev->irq, netdev);
3138         }
3139         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3140 }
3141 #endif
3142
3143 /**
3144  * i40e_vsi_control_tx - Start or stop a VSI's rings
3145  * @vsi: the VSI being configured
3146  * @enable: start or stop the rings
3147  **/
3148 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3149 {
3150         struct i40e_pf *pf = vsi->back;
3151         struct i40e_hw *hw = &pf->hw;
3152         int i, j, pf_q;
3153         u32 tx_reg;
3154
3155         pf_q = vsi->base_queue;
3156         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3157                 for (j = 0; j < 50; j++) {
3158                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3159                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3160                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3161                                 break;
3162                         usleep_range(1000, 2000);
3163                 }
3164                 /* Skip if the queue is already in the requested state */
3165                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3166                         continue;
3167
3168                 /* turn on/off the queue */
3169                 if (enable) {
3170                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3171                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3172                 } else {
3173                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3174                 }
3175
3176                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3177
3178                 /* wait for the change to finish */
3179                 for (j = 0; j < 10; j++) {
3180                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3181                         if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3182                                 break;
3183
3184                         udelay(10);
3185                 }
3186                 if (j >= 10) {
3187                         dev_info(&pf->pdev->dev, "Tx ring %d %sable timeout\n",
3188                                  pf_q, (enable ? "en" : "dis"));
3189                         return -ETIMEDOUT;
3190                 }
3191         }
3192
3193         if (hw->revision_id == 0)
3194                 mdelay(50);
3195
3196         return 0;
3197 }
3198
3199 /**
3200  * i40e_vsi_control_rx - Start or stop a VSI's rings
3201  * @vsi: the VSI being configured
3202  * @enable: start or stop the rings
3203  **/
3204 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3205 {
3206         struct i40e_pf *pf = vsi->back;
3207         struct i40e_hw *hw = &pf->hw;
3208         int i, j, pf_q;
3209         u32 rx_reg;
3210
3211         pf_q = vsi->base_queue;
3212         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3213                 for (j = 0; j < 50; j++) {
3214                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3215                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3216                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3217                                 break;
3218                         usleep_range(1000, 2000);
3219                 }
3220
3221                 /* Skip if the queue is already in the requested state */
3222                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3223                         continue;
3224
3225                 /* turn on/off the queue */
3226                 if (enable)
3227                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3228                 else
3229                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3230                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3231
3232                 /* wait for the change to finish */
3233                 for (j = 0; j < 10; j++) {
3234                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3235
3236                         if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3237                                 break;
3238
3239                         udelay(10);
3240                 }
3241                 if (j >= 10) {
3242                         dev_info(&pf->pdev->dev, "Rx ring %d %sable timeout\n",
3243                                  pf_q, (enable ? "en" : "dis"));
3244                         return -ETIMEDOUT;
3245                 }
3246         }
3247
3248         return 0;
3249 }
3250
3251 /**
3252  * i40e_vsi_control_rings - Start or stop a VSI's rings
3253  * @vsi: the VSI being configured
3254  * @enable: start or stop the rings
3255  **/
3256 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3257 {
3258         int ret = 0;
3259
3260         /* do rx first for enable and last for disable */
3261         if (request) {
3262                 ret = i40e_vsi_control_rx(vsi, request);
3263                 if (ret)
3264                         return ret;
3265                 ret = i40e_vsi_control_tx(vsi, request);
3266         } else {
3267                 /* Ignore return value, we need to shutdown whatever we can */
3268                 i40e_vsi_control_tx(vsi, request);
3269                 i40e_vsi_control_rx(vsi, request);
3270         }
3271
3272         return ret;
3273 }
3274
3275 /**
3276  * i40e_vsi_free_irq - Free the irq association with the OS
3277  * @vsi: the VSI being configured
3278  **/
3279 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3280 {
3281         struct i40e_pf *pf = vsi->back;
3282         struct i40e_hw *hw = &pf->hw;
3283         int base = vsi->base_vector;
3284         u32 val, qp;
3285         int i;
3286
3287         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3288                 if (!vsi->q_vectors)
3289                         return;
3290
3291                 for (i = 0; i < vsi->num_q_vectors; i++) {
3292                         u16 vector = i + base;
3293
3294                         /* free only the irqs that were actually requested */
3295                         if (!vsi->q_vectors[i] ||
3296                             !vsi->q_vectors[i]->num_ringpairs)
3297                                 continue;
3298
3299                         /* clear the affinity_mask in the IRQ descriptor */
3300                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3301                                               NULL);
3302                         free_irq(pf->msix_entries[vector].vector,
3303                                  vsi->q_vectors[i]);
3304
3305                         /* Tear down the interrupt queue link list
3306                          *
3307                          * We know that they come in pairs and always
3308                          * the Rx first, then the Tx.  To clear the
3309                          * link list, stick the EOL value into the
3310                          * next_q field of the registers.
3311                          */
3312                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3313                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3314                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3315                         val |= I40E_QUEUE_END_OF_LIST
3316                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3317                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3318
3319                         while (qp != I40E_QUEUE_END_OF_LIST) {
3320                                 u32 next;
3321
3322                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3323
3324                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3325                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3326                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3327                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3328
3329                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3330                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3331
3332                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3333
3334                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3335
3336                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3337                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3338
3339                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3340                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3341                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3342                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3343
3344                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3345                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3346
3347                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3348                                 qp = next;
3349                         }
3350                 }
3351         } else {
3352                 free_irq(pf->pdev->irq, pf);
3353
3354                 val = rd32(hw, I40E_PFINT_LNKLST0);
3355                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3356                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3357                 val |= I40E_QUEUE_END_OF_LIST
3358                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3359                 wr32(hw, I40E_PFINT_LNKLST0, val);
3360
3361                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3362                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3363                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3364                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3365                          I40E_QINT_RQCTL_INTEVENT_MASK);
3366
3367                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3368                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3369
3370                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3371
3372                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3373
3374                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3375                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3376                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3377                          I40E_QINT_TQCTL_INTEVENT_MASK);
3378
3379                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3380                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3381
3382                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3383         }
3384 }
3385
3386 /**
3387  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3388  * @vsi: the VSI being configured
3389  * @v_idx: Index of vector to be freed
3390  *
3391  * This function frees the memory allocated to the q_vector.  In addition if
3392  * NAPI is enabled it will delete any references to the NAPI struct prior
3393  * to freeing the q_vector.
3394  **/
3395 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3396 {
3397         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3398         struct i40e_ring *ring;
3399
3400         if (!q_vector)
3401                 return;
3402
3403         /* disassociate q_vector from rings */
3404         i40e_for_each_ring(ring, q_vector->tx)
3405                 ring->q_vector = NULL;
3406
3407         i40e_for_each_ring(ring, q_vector->rx)
3408                 ring->q_vector = NULL;
3409
3410         /* only VSI w/ an associated netdev is set up w/ NAPI */
3411         if (vsi->netdev)
3412                 netif_napi_del(&q_vector->napi);
3413
3414         vsi->q_vectors[v_idx] = NULL;
3415
3416         kfree_rcu(q_vector, rcu);
3417 }
3418
3419 /**
3420  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3421  * @vsi: the VSI being un-configured
3422  *
3423  * This frees the memory allocated to the q_vectors and
3424  * deletes references to the NAPI struct.
3425  **/
3426 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3427 {
3428         int v_idx;
3429
3430         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3431                 i40e_free_q_vector(vsi, v_idx);
3432 }
3433
3434 /**
3435  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3436  * @pf: board private structure
3437  **/
3438 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3439 {
3440         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3441         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3442                 pci_disable_msix(pf->pdev);
3443                 kfree(pf->msix_entries);
3444                 pf->msix_entries = NULL;
3445         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3446                 pci_disable_msi(pf->pdev);
3447         }
3448         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3449 }
3450
3451 /**
3452  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3453  * @pf: board private structure
3454  *
3455  * We go through and clear interrupt specific resources and reset the structure
3456  * to pre-load conditions
3457  **/
3458 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3459 {
3460         int i;
3461
3462         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3463         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
3464                 if (pf->vsi[i])
3465                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3466         i40e_reset_interrupt_capability(pf);
3467 }
3468
3469 /**
3470  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3471  * @vsi: the VSI being configured
3472  **/
3473 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3474 {
3475         int q_idx;
3476
3477         if (!vsi->netdev)
3478                 return;
3479
3480         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3481                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3482 }
3483
3484 /**
3485  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3486  * @vsi: the VSI being configured
3487  **/
3488 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3489 {
3490         int q_idx;
3491
3492         if (!vsi->netdev)
3493                 return;
3494
3495         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3496                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3497 }
3498
3499 /**
3500  * i40e_vsi_close - Shut down a VSI
3501  * @vsi: the vsi to be quelled
3502  **/
3503 static void i40e_vsi_close(struct i40e_vsi *vsi)
3504 {
3505         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3506                 i40e_down(vsi);
3507         i40e_vsi_free_irq(vsi);
3508         i40e_vsi_free_tx_resources(vsi);
3509         i40e_vsi_free_rx_resources(vsi);
3510 }
3511
3512 /**
3513  * i40e_quiesce_vsi - Pause a given VSI
3514  * @vsi: the VSI being paused
3515  **/
3516 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3517 {
3518         if (test_bit(__I40E_DOWN, &vsi->state))
3519                 return;
3520
3521         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3522         if (vsi->netdev && netif_running(vsi->netdev)) {
3523                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3524         } else {
3525                 i40e_vsi_close(vsi);
3526         }
3527 }
3528
3529 /**
3530  * i40e_unquiesce_vsi - Resume a given VSI
3531  * @vsi: the VSI being resumed
3532  **/
3533 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3534 {
3535         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3536                 return;
3537
3538         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3539         if (vsi->netdev && netif_running(vsi->netdev))
3540                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3541         else
3542                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
3543 }
3544
3545 /**
3546  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3547  * @pf: the PF
3548  **/
3549 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3550 {
3551         int v;
3552
3553         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3554                 if (pf->vsi[v])
3555                         i40e_quiesce_vsi(pf->vsi[v]);
3556         }
3557 }
3558
3559 /**
3560  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3561  * @pf: the PF
3562  **/
3563 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3564 {
3565         int v;
3566
3567         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3568                 if (pf->vsi[v])
3569                         i40e_unquiesce_vsi(pf->vsi[v]);
3570         }
3571 }
3572
3573 /**
3574  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
3575  * @dcbcfg: the corresponding DCBx configuration structure
3576  *
3577  * Return the number of TCs from given DCBx configuration
3578  **/
3579 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
3580 {
3581         u8 num_tc = 0;
3582         int i;
3583
3584         /* Scan the ETS Config Priority Table to find
3585          * traffic class enabled for a given priority
3586          * and use the traffic class index to get the
3587          * number of traffic classes enabled
3588          */
3589         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3590                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
3591                         num_tc = dcbcfg->etscfg.prioritytable[i];
3592         }
3593
3594         /* Traffic class index starts from zero so
3595          * increment to return the actual count
3596          */
3597         return num_tc + 1;
3598 }
3599
3600 /**
3601  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
3602  * @dcbcfg: the corresponding DCBx configuration structure
3603  *
3604  * Query the current DCB configuration and return the number of
3605  * traffic classes enabled from the given DCBX config
3606  **/
3607 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
3608 {
3609         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
3610         u8 enabled_tc = 1;
3611         u8 i;
3612
3613         for (i = 0; i < num_tc; i++)
3614                 enabled_tc |= 1 << i;
3615
3616         return enabled_tc;
3617 }
3618
3619 /**
3620  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
3621  * @pf: PF being queried
3622  *
3623  * Return number of traffic classes enabled for the given PF
3624  **/
3625 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
3626 {
3627         struct i40e_hw *hw = &pf->hw;
3628         u8 i, enabled_tc;
3629         u8 num_tc = 0;
3630         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3631
3632         /* If DCB is not enabled then always in single TC */
3633         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3634                 return 1;
3635
3636         /* MFP mode return count of enabled TCs for this PF */
3637         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3638                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3639                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3640                         if (enabled_tc & (1 << i))
3641                                 num_tc++;
3642                 }
3643                 return num_tc;
3644         }
3645
3646         /* SFP mode will be enabled for all TCs on port */
3647         return i40e_dcb_get_num_tc(dcbcfg);
3648 }
3649
3650 /**
3651  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
3652  * @pf: PF being queried
3653  *
3654  * Return a bitmap for first enabled traffic class for this PF.
3655  **/
3656 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
3657 {
3658         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3659         u8 i = 0;
3660
3661         if (!enabled_tc)
3662                 return 0x1; /* TC0 */
3663
3664         /* Find the first enabled TC */
3665         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3666                 if (enabled_tc & (1 << i))
3667                         break;
3668         }
3669
3670         return 1 << i;
3671 }
3672
3673 /**
3674  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
3675  * @pf: PF being queried
3676  *
3677  * Return a bitmap for enabled traffic classes for this PF.
3678  **/
3679 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
3680 {
3681         /* If DCB is not enabled for this PF then just return default TC */
3682         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3683                 return i40e_pf_get_default_tc(pf);
3684
3685         /* MFP mode will have enabled TCs set by FW */
3686         if (pf->flags & I40E_FLAG_MFP_ENABLED)
3687                 return pf->hw.func_caps.enabled_tcmap;
3688
3689         /* SFP mode we want PF to be enabled for all TCs */
3690         return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
3691 }
3692
3693 /**
3694  * i40e_vsi_get_bw_info - Query VSI BW Information
3695  * @vsi: the VSI being queried
3696  *
3697  * Returns 0 on success, negative value on failure
3698  **/
3699 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
3700 {
3701         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
3702         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
3703         struct i40e_pf *pf = vsi->back;
3704         struct i40e_hw *hw = &pf->hw;
3705         i40e_status aq_ret;
3706         u32 tc_bw_max;
3707         int i;
3708
3709         /* Get the VSI level BW configuration */
3710         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
3711         if (aq_ret) {
3712                 dev_info(&pf->pdev->dev,
3713                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
3714                          aq_ret, pf->hw.aq.asq_last_status);
3715                 return -EINVAL;
3716         }
3717
3718         /* Get the VSI level BW configuration per TC */
3719         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
3720                                                   NULL);
3721         if (aq_ret) {
3722                 dev_info(&pf->pdev->dev,
3723                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
3724                          aq_ret, pf->hw.aq.asq_last_status);
3725                 return -EINVAL;
3726         }
3727
3728         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
3729                 dev_info(&pf->pdev->dev,
3730                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
3731                          bw_config.tc_valid_bits,
3732                          bw_ets_config.tc_valid_bits);
3733                 /* Still continuing */
3734         }
3735
3736         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
3737         vsi->bw_max_quanta = bw_config.max_bw;
3738         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
3739                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
3740         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3741                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
3742                 vsi->bw_ets_limit_credits[i] =
3743                                         le16_to_cpu(bw_ets_config.credits[i]);
3744                 /* 3 bits out of 4 for each TC */
3745                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
3746         }
3747
3748         return 0;
3749 }
3750
3751 /**
3752  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
3753  * @vsi: the VSI being configured
3754  * @enabled_tc: TC bitmap
3755  * @bw_credits: BW shared credits per TC
3756  *
3757  * Returns 0 on success, negative value on failure
3758  **/
3759 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
3760                                        u8 *bw_share)
3761 {
3762         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
3763         i40e_status aq_ret;
3764         int i;
3765
3766         bw_data.tc_valid_bits = enabled_tc;
3767         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3768                 bw_data.tc_bw_credits[i] = bw_share[i];
3769
3770         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
3771                                           NULL);
3772         if (aq_ret) {
3773                 dev_info(&vsi->back->pdev->dev,
3774                          "AQ command Config VSI BW allocation per TC failed = %d\n",
3775                          vsi->back->hw.aq.asq_last_status);
3776                 return -EINVAL;
3777         }
3778
3779         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3780                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
3781
3782         return 0;
3783 }
3784
3785 /**
3786  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
3787  * @vsi: the VSI being configured
3788  * @enabled_tc: TC map to be enabled
3789  *
3790  **/
3791 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3792 {
3793         struct net_device *netdev = vsi->netdev;
3794         struct i40e_pf *pf = vsi->back;
3795         struct i40e_hw *hw = &pf->hw;
3796         u8 netdev_tc = 0;
3797         int i;
3798         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3799
3800         if (!netdev)
3801                 return;
3802
3803         if (!enabled_tc) {
3804                 netdev_reset_tc(netdev);
3805                 return;
3806         }
3807
3808         /* Set up actual enabled TCs on the VSI */
3809         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
3810                 return;
3811
3812         /* set per TC queues for the VSI */
3813         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3814                 /* Only set TC queues for enabled tcs
3815                  *
3816                  * e.g. For a VSI that has TC0 and TC3 enabled the
3817                  * enabled_tc bitmap would be 0x00001001; the driver
3818                  * will set the numtc for netdev as 2 that will be
3819                  * referenced by the netdev layer as TC 0 and 1.
3820                  */
3821                 if (vsi->tc_config.enabled_tc & (1 << i))
3822                         netdev_set_tc_queue(netdev,
3823                                         vsi->tc_config.tc_info[i].netdev_tc,
3824                                         vsi->tc_config.tc_info[i].qcount,
3825                                         vsi->tc_config.tc_info[i].qoffset);
3826         }
3827
3828         /* Assign UP2TC map for the VSI */
3829         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3830                 /* Get the actual TC# for the UP */
3831                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
3832                 /* Get the mapped netdev TC# for the UP */
3833                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
3834                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
3835         }
3836 }
3837
3838 /**
3839  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
3840  * @vsi: the VSI being configured
3841  * @ctxt: the ctxt buffer returned from AQ VSI update param command
3842  **/
3843 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
3844                                       struct i40e_vsi_context *ctxt)
3845 {
3846         /* copy just the sections touched not the entire info
3847          * since not all sections are valid as returned by
3848          * update vsi params
3849          */
3850         vsi->info.mapping_flags = ctxt->info.mapping_flags;
3851         memcpy(&vsi->info.queue_mapping,
3852                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
3853         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
3854                sizeof(vsi->info.tc_mapping));
3855 }
3856
3857 /**
3858  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
3859  * @vsi: VSI to be configured
3860  * @enabled_tc: TC bitmap
3861  *
3862  * This configures a particular VSI for TCs that are mapped to the
3863  * given TC bitmap. It uses default bandwidth share for TCs across
3864  * VSIs to configure TC for a particular VSI.
3865  *
3866  * NOTE:
3867  * It is expected that the VSI queues have been quisced before calling
3868  * this function.
3869  **/
3870 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3871 {
3872         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
3873         struct i40e_vsi_context ctxt;
3874         int ret = 0;
3875         int i;
3876
3877         /* Check if enabled_tc is same as existing or new TCs */
3878         if (vsi->tc_config.enabled_tc == enabled_tc)
3879                 return ret;
3880
3881         /* Enable ETS TCs with equal BW Share for now across all VSIs */
3882         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3883                 if (enabled_tc & (1 << i))
3884                         bw_share[i] = 1;
3885         }
3886
3887         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
3888         if (ret) {
3889                 dev_info(&vsi->back->pdev->dev,
3890                          "Failed configuring TC map %d for VSI %d\n",
3891                          enabled_tc, vsi->seid);
3892                 goto out;
3893         }
3894
3895         /* Update Queue Pairs Mapping for currently enabled UPs */
3896         ctxt.seid = vsi->seid;
3897         ctxt.pf_num = vsi->back->hw.pf_id;
3898         ctxt.vf_num = 0;
3899         ctxt.uplink_seid = vsi->uplink_seid;
3900         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
3901         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
3902
3903         /* Update the VSI after updating the VSI queue-mapping information */
3904         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
3905         if (ret) {
3906                 dev_info(&vsi->back->pdev->dev,
3907                          "update vsi failed, aq_err=%d\n",
3908                          vsi->back->hw.aq.asq_last_status);
3909                 goto out;
3910         }
3911         /* update the local VSI info with updated queue map */
3912         i40e_vsi_update_queue_map(vsi, &ctxt);
3913         vsi->info.valid_sections = 0;
3914
3915         /* Update current VSI BW information */
3916         ret = i40e_vsi_get_bw_info(vsi);
3917         if (ret) {
3918                 dev_info(&vsi->back->pdev->dev,
3919                          "Failed updating vsi bw info, aq_err=%d\n",
3920                          vsi->back->hw.aq.asq_last_status);
3921                 goto out;
3922         }
3923
3924         /* Update the netdev TC setup */
3925         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
3926 out:
3927         return ret;
3928 }
3929
3930 /**
3931  * i40e_veb_config_tc - Configure TCs for given VEB
3932  * @veb: given VEB
3933  * @enabled_tc: TC bitmap
3934  *
3935  * Configures given TC bitmap for VEB (switching) element
3936  **/
3937 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
3938 {
3939         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
3940         struct i40e_pf *pf = veb->pf;
3941         int ret = 0;
3942         int i;
3943
3944         /* No TCs or already enabled TCs just return */
3945         if (!enabled_tc || veb->enabled_tc == enabled_tc)
3946                 return ret;
3947
3948         bw_data.tc_valid_bits = enabled_tc;
3949         /* bw_data.absolute_credits is not set (relative) */
3950
3951         /* Enable ETS TCs with equal BW Share for now */
3952         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3953                 if (enabled_tc & (1 << i))
3954                         bw_data.tc_bw_share_credits[i] = 1;
3955         }
3956
3957         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
3958                                                    &bw_data, NULL);
3959         if (ret) {
3960                 dev_info(&pf->pdev->dev,
3961                          "veb bw config failed, aq_err=%d\n",
3962                          pf->hw.aq.asq_last_status);
3963                 goto out;
3964         }
3965
3966         /* Update the BW information */
3967         ret = i40e_veb_get_bw_info(veb);
3968         if (ret) {
3969                 dev_info(&pf->pdev->dev,
3970                          "Failed getting veb bw config, aq_err=%d\n",
3971                          pf->hw.aq.asq_last_status);
3972         }
3973
3974 out:
3975         return ret;
3976 }
3977
3978 #ifdef CONFIG_I40E_DCB
3979 /**
3980  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
3981  * @pf: PF struct
3982  *
3983  * Reconfigure VEB/VSIs on a given PF; it is assumed that
3984  * the caller would've quiesce all the VSIs before calling
3985  * this function
3986  **/
3987 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
3988 {
3989         u8 tc_map = 0;
3990         int ret;
3991         u8 v;
3992
3993         /* Enable the TCs available on PF to all VEBs */
3994         tc_map = i40e_pf_get_tc_map(pf);
3995         for (v = 0; v < I40E_MAX_VEB; v++) {
3996                 if (!pf->veb[v])
3997                         continue;
3998                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
3999                 if (ret) {
4000                         dev_info(&pf->pdev->dev,
4001                                  "Failed configuring TC for VEB seid=%d\n",
4002                                  pf->veb[v]->seid);
4003                         /* Will try to configure as many components */
4004                 }
4005         }
4006
4007         /* Update each VSI */
4008         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4009                 if (!pf->vsi[v])
4010                         continue;
4011
4012                 /* - Enable all TCs for the LAN VSI
4013                  * - For all others keep them at TC0 for now
4014                  */
4015                 if (v == pf->lan_vsi)
4016                         tc_map = i40e_pf_get_tc_map(pf);
4017                 else
4018                         tc_map = i40e_pf_get_default_tc(pf);
4019
4020                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4021                 if (ret) {
4022                         dev_info(&pf->pdev->dev,
4023                                  "Failed configuring TC for VSI seid=%d\n",
4024                                  pf->vsi[v]->seid);
4025                         /* Will try to configure as many components */
4026                 } else {
4027                         /* Re-configure VSI vectors based on updated TC map */
4028                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4029                         if (pf->vsi[v]->netdev)
4030                                 i40e_dcbnl_set_all(pf->vsi[v]);
4031                 }
4032         }
4033 }
4034
4035 /**
4036  * i40e_init_pf_dcb - Initialize DCB configuration
4037  * @pf: PF being configured
4038  *
4039  * Query the current DCB configuration and cache it
4040  * in the hardware structure
4041  **/
4042 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4043 {
4044         struct i40e_hw *hw = &pf->hw;
4045         int err = 0;
4046
4047         if (pf->hw.func_caps.npar_enable)
4048                 goto out;
4049
4050         /* Get the initial DCB configuration */
4051         err = i40e_init_dcb(hw);
4052         if (!err) {
4053                 /* Device/Function is not DCBX capable */
4054                 if ((!hw->func_caps.dcb) ||
4055                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4056                         dev_info(&pf->pdev->dev,
4057                                  "DCBX offload is not supported or is disabled for this PF.\n");
4058
4059                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4060                                 goto out;
4061
4062                 } else {
4063                         /* When status is not DISABLED then DCBX in FW */
4064                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4065                                        DCB_CAP_DCBX_VER_IEEE;
4066                         pf->flags |= I40E_FLAG_DCB_ENABLED;
4067                 }
4068         } else {
4069                 dev_info(&pf->pdev->dev, "AQ Querying DCB configuration failed: %d\n",
4070                          pf->hw.aq.asq_last_status);
4071         }
4072
4073 out:
4074         return err;
4075 }
4076 #endif /* CONFIG_I40E_DCB */
4077
4078 /**
4079  * i40e_up_complete - Finish the last steps of bringing up a connection
4080  * @vsi: the VSI being configured
4081  **/
4082 static int i40e_up_complete(struct i40e_vsi *vsi)
4083 {
4084         struct i40e_pf *pf = vsi->back;
4085         int err;
4086
4087         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4088                 i40e_vsi_configure_msix(vsi);
4089         else
4090                 i40e_configure_msi_and_legacy(vsi);
4091
4092         /* start rings */
4093         err = i40e_vsi_control_rings(vsi, true);
4094         if (err)
4095                 return err;
4096
4097         clear_bit(__I40E_DOWN, &vsi->state);
4098         i40e_napi_enable_all(vsi);
4099         i40e_vsi_enable_irq(vsi);
4100
4101         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4102             (vsi->netdev)) {
4103                 netdev_info(vsi->netdev, "NIC Link is Up\n");
4104                 netif_tx_start_all_queues(vsi->netdev);
4105                 netif_carrier_on(vsi->netdev);
4106         } else if (vsi->netdev) {
4107                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4108         }
4109
4110         /* replay FDIR SB filters */
4111         if (vsi->type == I40E_VSI_FDIR)
4112                 i40e_fdir_filter_restore(vsi);
4113         i40e_service_event_schedule(pf);
4114
4115         return 0;
4116 }
4117
4118 /**
4119  * i40e_vsi_reinit_locked - Reset the VSI
4120  * @vsi: the VSI being configured
4121  *
4122  * Rebuild the ring structs after some configuration
4123  * has changed, e.g. MTU size.
4124  **/
4125 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4126 {
4127         struct i40e_pf *pf = vsi->back;
4128
4129         WARN_ON(in_interrupt());
4130         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4131                 usleep_range(1000, 2000);
4132         i40e_down(vsi);
4133
4134         /* Give a VF some time to respond to the reset.  The
4135          * two second wait is based upon the watchdog cycle in
4136          * the VF driver.
4137          */
4138         if (vsi->type == I40E_VSI_SRIOV)
4139                 msleep(2000);
4140         i40e_up(vsi);
4141         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4142 }
4143
4144 /**
4145  * i40e_up - Bring the connection back up after being down
4146  * @vsi: the VSI being configured
4147  **/
4148 int i40e_up(struct i40e_vsi *vsi)
4149 {
4150         int err;
4151
4152         err = i40e_vsi_configure(vsi);
4153         if (!err)
4154                 err = i40e_up_complete(vsi);
4155
4156         return err;
4157 }
4158
4159 /**
4160  * i40e_down - Shutdown the connection processing
4161  * @vsi: the VSI being stopped
4162  **/
4163 void i40e_down(struct i40e_vsi *vsi)
4164 {
4165         int i;
4166
4167         /* It is assumed that the caller of this function
4168          * sets the vsi->state __I40E_DOWN bit.
4169          */
4170         if (vsi->netdev) {
4171                 netif_carrier_off(vsi->netdev);
4172                 netif_tx_disable(vsi->netdev);
4173         }
4174         i40e_vsi_disable_irq(vsi);
4175         i40e_vsi_control_rings(vsi, false);
4176         i40e_napi_disable_all(vsi);
4177
4178         for (i = 0; i < vsi->num_queue_pairs; i++) {
4179                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4180                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4181         }
4182 }
4183
4184 /**
4185  * i40e_setup_tc - configure multiple traffic classes
4186  * @netdev: net device to configure
4187  * @tc: number of traffic classes to enable
4188  **/
4189 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4190 {
4191         struct i40e_netdev_priv *np = netdev_priv(netdev);
4192         struct i40e_vsi *vsi = np->vsi;
4193         struct i40e_pf *pf = vsi->back;
4194         u8 enabled_tc = 0;
4195         int ret = -EINVAL;
4196         int i;
4197
4198         /* Check if DCB enabled to continue */
4199         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4200                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4201                 goto exit;
4202         }
4203
4204         /* Check if MFP enabled */
4205         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4206                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4207                 goto exit;
4208         }
4209
4210         /* Check whether tc count is within enabled limit */
4211         if (tc > i40e_pf_get_num_tc(pf)) {
4212                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4213                 goto exit;
4214         }
4215
4216         /* Generate TC map for number of tc requested */
4217         for (i = 0; i < tc; i++)
4218                 enabled_tc |= (1 << i);
4219
4220         /* Requesting same TC configuration as already enabled */
4221         if (enabled_tc == vsi->tc_config.enabled_tc)
4222                 return 0;
4223
4224         /* Quiesce VSI queues */
4225         i40e_quiesce_vsi(vsi);
4226
4227         /* Configure VSI for enabled TCs */
4228         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4229         if (ret) {
4230                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4231                             vsi->seid);
4232                 goto exit;
4233         }
4234
4235         /* Unquiesce VSI */
4236         i40e_unquiesce_vsi(vsi);
4237
4238 exit:
4239         return ret;
4240 }
4241
4242 /**
4243  * i40e_open - Called when a network interface is made active
4244  * @netdev: network interface device structure
4245  *
4246  * The open entry point is called when a network interface is made
4247  * active by the system (IFF_UP).  At this point all resources needed
4248  * for transmit and receive operations are allocated, the interrupt
4249  * handler is registered with the OS, the netdev watchdog subtask is
4250  * enabled, and the stack is notified that the interface is ready.
4251  *
4252  * Returns 0 on success, negative value on failure
4253  **/
4254 static int i40e_open(struct net_device *netdev)
4255 {
4256         struct i40e_netdev_priv *np = netdev_priv(netdev);
4257         struct i40e_vsi *vsi = np->vsi;
4258         struct i40e_pf *pf = vsi->back;
4259         int err;
4260
4261         /* disallow open during test or if eeprom is broken */
4262         if (test_bit(__I40E_TESTING, &pf->state) ||
4263             test_bit(__I40E_BAD_EEPROM, &pf->state))
4264                 return -EBUSY;
4265
4266         netif_carrier_off(netdev);
4267
4268         err = i40e_vsi_open(vsi);
4269         if (err)
4270                 return err;
4271
4272         /* configure global TSO hardware offload settings */
4273         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4274                                                        TCP_FLAG_FIN) >> 16);
4275         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4276                                                        TCP_FLAG_FIN |
4277                                                        TCP_FLAG_CWR) >> 16);
4278         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4279
4280 #ifdef CONFIG_I40E_VXLAN
4281         vxlan_get_rx_port(netdev);
4282 #endif
4283
4284         return 0;
4285 }
4286
4287 /**
4288  * i40e_vsi_open -
4289  * @vsi: the VSI to open
4290  *
4291  * Finish initialization of the VSI.
4292  *
4293  * Returns 0 on success, negative value on failure
4294  **/
4295 int i40e_vsi_open(struct i40e_vsi *vsi)
4296 {
4297         struct i40e_pf *pf = vsi->back;
4298         char int_name[IFNAMSIZ];
4299         int err;
4300
4301         /* allocate descriptors */
4302         err = i40e_vsi_setup_tx_resources(vsi);
4303         if (err)
4304                 goto err_setup_tx;
4305         err = i40e_vsi_setup_rx_resources(vsi);
4306         if (err)
4307                 goto err_setup_rx;
4308
4309         err = i40e_vsi_configure(vsi);
4310         if (err)
4311                 goto err_setup_rx;
4312
4313         if (vsi->netdev) {
4314                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4315                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4316                 err = i40e_vsi_request_irq(vsi, int_name);
4317                 if (err)
4318                         goto err_setup_rx;
4319
4320                 /* Notify the stack of the actual queue counts. */
4321                 err = netif_set_real_num_tx_queues(vsi->netdev,
4322                                                    vsi->num_queue_pairs);
4323                 if (err)
4324                         goto err_set_queues;
4325
4326                 err = netif_set_real_num_rx_queues(vsi->netdev,
4327                                                    vsi->num_queue_pairs);
4328                 if (err)
4329                         goto err_set_queues;
4330
4331         } else if (vsi->type == I40E_VSI_FDIR) {
4332                 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
4333                          dev_driver_string(&pf->pdev->dev));
4334                 err = i40e_vsi_request_irq(vsi, int_name);
4335         } else {
4336                 err = -EINVAL;
4337                 goto err_setup_rx;
4338         }
4339
4340         err = i40e_up_complete(vsi);
4341         if (err)
4342                 goto err_up_complete;
4343
4344         return 0;
4345
4346 err_up_complete:
4347         i40e_down(vsi);
4348 err_set_queues:
4349         i40e_vsi_free_irq(vsi);
4350 err_setup_rx:
4351         i40e_vsi_free_rx_resources(vsi);
4352 err_setup_tx:
4353         i40e_vsi_free_tx_resources(vsi);
4354         if (vsi == pf->vsi[pf->lan_vsi])
4355                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4356
4357         return err;
4358 }
4359
4360 /**
4361  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4362  * @pf: Pointer to pf
4363  *
4364  * This function destroys the hlist where all the Flow Director
4365  * filters were saved.
4366  **/
4367 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4368 {
4369         struct i40e_fdir_filter *filter;
4370         struct hlist_node *node2;
4371
4372         hlist_for_each_entry_safe(filter, node2,
4373                                   &pf->fdir_filter_list, fdir_node) {
4374                 hlist_del(&filter->fdir_node);
4375                 kfree(filter);
4376         }
4377         pf->fdir_pf_active_filters = 0;
4378 }
4379
4380 /**
4381  * i40e_close - Disables a network interface
4382  * @netdev: network interface device structure
4383  *
4384  * The close entry point is called when an interface is de-activated
4385  * by the OS.  The hardware is still under the driver's control, but
4386  * this netdev interface is disabled.
4387  *
4388  * Returns 0, this is not allowed to fail
4389  **/
4390 static int i40e_close(struct net_device *netdev)
4391 {
4392         struct i40e_netdev_priv *np = netdev_priv(netdev);
4393         struct i40e_vsi *vsi = np->vsi;
4394
4395         i40e_vsi_close(vsi);
4396
4397         return 0;
4398 }
4399
4400 /**
4401  * i40e_do_reset - Start a PF or Core Reset sequence
4402  * @pf: board private structure
4403  * @reset_flags: which reset is requested
4404  *
4405  * The essential difference in resets is that the PF Reset
4406  * doesn't clear the packet buffers, doesn't reset the PE
4407  * firmware, and doesn't bother the other PFs on the chip.
4408  **/
4409 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
4410 {
4411         u32 val;
4412
4413         WARN_ON(in_interrupt());
4414
4415         /* do the biggest reset indicated */
4416         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
4417
4418                 /* Request a Global Reset
4419                  *
4420                  * This will start the chip's countdown to the actual full
4421                  * chip reset event, and a warning interrupt to be sent
4422                  * to all PFs, including the requestor.  Our handler
4423                  * for the warning interrupt will deal with the shutdown
4424                  * and recovery of the switch setup.
4425                  */
4426                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
4427                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4428                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
4429                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4430
4431         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
4432
4433                 /* Request a Core Reset
4434                  *
4435                  * Same as Global Reset, except does *not* include the MAC/PHY
4436                  */
4437                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
4438                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4439                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
4440                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4441                 i40e_flush(&pf->hw);
4442
4443         } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
4444
4445                 /* Request a Firmware Reset
4446                  *
4447                  * Same as Global reset, plus restarting the
4448                  * embedded firmware engine.
4449                  */
4450                 /* enable EMP Reset */
4451                 val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
4452                 val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
4453                 wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
4454
4455                 /* force the reset */
4456                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4457                 val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
4458                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4459                 i40e_flush(&pf->hw);
4460
4461         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
4462
4463                 /* Request a PF Reset
4464                  *
4465                  * Resets only the PF-specific registers
4466                  *
4467                  * This goes directly to the tear-down and rebuild of
4468                  * the switch, since we need to do all the recovery as
4469                  * for the Core Reset.
4470                  */
4471                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
4472                 i40e_handle_reset_warning(pf);
4473
4474         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
4475                 int v;
4476
4477                 /* Find the VSI(s) that requested a re-init */
4478                 dev_info(&pf->pdev->dev,
4479                          "VSI reinit requested\n");
4480                 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4481                         struct i40e_vsi *vsi = pf->vsi[v];
4482                         if (vsi != NULL &&
4483                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
4484                                 i40e_vsi_reinit_locked(pf->vsi[v]);
4485                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
4486                         }
4487                 }
4488
4489                 /* no further action needed, so return now */
4490                 return;
4491         } else {
4492                 dev_info(&pf->pdev->dev,
4493                          "bad reset request 0x%08x\n", reset_flags);
4494                 return;
4495         }
4496 }
4497
4498 #ifdef CONFIG_I40E_DCB
4499 /**
4500  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
4501  * @pf: board private structure
4502  * @old_cfg: current DCB config
4503  * @new_cfg: new DCB config
4504  **/
4505 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
4506                             struct i40e_dcbx_config *old_cfg,
4507                             struct i40e_dcbx_config *new_cfg)
4508 {
4509         bool need_reconfig = false;
4510
4511         /* Check if ETS configuration has changed */
4512         if (memcmp(&new_cfg->etscfg,
4513                    &old_cfg->etscfg,
4514                    sizeof(new_cfg->etscfg))) {
4515                 /* If Priority Table has changed reconfig is needed */
4516                 if (memcmp(&new_cfg->etscfg.prioritytable,
4517                            &old_cfg->etscfg.prioritytable,
4518                            sizeof(new_cfg->etscfg.prioritytable))) {
4519                         need_reconfig = true;
4520                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
4521                 }
4522
4523                 if (memcmp(&new_cfg->etscfg.tcbwtable,
4524                            &old_cfg->etscfg.tcbwtable,
4525                            sizeof(new_cfg->etscfg.tcbwtable)))
4526                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
4527
4528                 if (memcmp(&new_cfg->etscfg.tsatable,
4529                            &old_cfg->etscfg.tsatable,
4530                            sizeof(new_cfg->etscfg.tsatable)))
4531                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
4532         }
4533
4534         /* Check if PFC configuration has changed */
4535         if (memcmp(&new_cfg->pfc,
4536                    &old_cfg->pfc,
4537                    sizeof(new_cfg->pfc))) {
4538                 need_reconfig = true;
4539                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
4540         }
4541
4542         /* Check if APP Table has changed */
4543         if (memcmp(&new_cfg->app,
4544                    &old_cfg->app,
4545                    sizeof(new_cfg->app))) {
4546                 need_reconfig = true;
4547                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
4548         }
4549
4550         return need_reconfig;
4551 }
4552
4553 /**
4554  * i40e_handle_lldp_event - Handle LLDP Change MIB event
4555  * @pf: board private structure
4556  * @e: event info posted on ARQ
4557  **/
4558 static int i40e_handle_lldp_event(struct i40e_pf *pf,
4559                                   struct i40e_arq_event_info *e)
4560 {
4561         struct i40e_aqc_lldp_get_mib *mib =
4562                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
4563         struct i40e_hw *hw = &pf->hw;
4564         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
4565         struct i40e_dcbx_config tmp_dcbx_cfg;
4566         bool need_reconfig = false;
4567         int ret = 0;
4568         u8 type;
4569
4570         /* Ignore if event is not for Nearest Bridge */
4571         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
4572                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
4573         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
4574                 return ret;
4575
4576         /* Check MIB Type and return if event for Remote MIB update */
4577         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
4578         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
4579                 /* Update the remote cached instance and return */
4580                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
4581                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
4582                                 &hw->remote_dcbx_config);
4583                 goto exit;
4584         }
4585
4586         /* Convert/store the DCBX data from LLDPDU temporarily */
4587         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
4588         ret = i40e_lldp_to_dcb_config(e->msg_buf, &tmp_dcbx_cfg);
4589         if (ret) {
4590                 /* Error in LLDPDU parsing return */
4591                 dev_info(&pf->pdev->dev, "Failed parsing LLDPDU from event buffer\n");
4592                 goto exit;
4593         }
4594
4595         /* No change detected in DCBX configs */
4596         if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
4597                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
4598                 goto exit;
4599         }
4600
4601         need_reconfig = i40e_dcb_need_reconfig(pf, dcbx_cfg, &tmp_dcbx_cfg);
4602
4603         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg);
4604
4605         /* Overwrite the new configuration */
4606         *dcbx_cfg = tmp_dcbx_cfg;
4607
4608         if (!need_reconfig)
4609                 goto exit;
4610
4611         /* Reconfiguration needed quiesce all VSIs */
4612         i40e_pf_quiesce_all_vsi(pf);
4613
4614         /* Changes in configuration update VEB/VSI */
4615         i40e_dcb_reconfigure(pf);
4616
4617         i40e_pf_unquiesce_all_vsi(pf);
4618 exit:
4619         return ret;
4620 }
4621 #endif /* CONFIG_I40E_DCB */
4622
4623 /**
4624  * i40e_do_reset_safe - Protected reset path for userland calls.
4625  * @pf: board private structure
4626  * @reset_flags: which reset is requested
4627  *
4628  **/
4629 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
4630 {
4631         rtnl_lock();
4632         i40e_do_reset(pf, reset_flags);
4633         rtnl_unlock();
4634 }
4635
4636 /**
4637  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
4638  * @pf: board private structure
4639  * @e: event info posted on ARQ
4640  *
4641  * Handler for LAN Queue Overflow Event generated by the firmware for PF
4642  * and VF queues
4643  **/
4644 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
4645                                            struct i40e_arq_event_info *e)
4646 {
4647         struct i40e_aqc_lan_overflow *data =
4648                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
4649         u32 queue = le32_to_cpu(data->prtdcb_rupto);
4650         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
4651         struct i40e_hw *hw = &pf->hw;
4652         struct i40e_vf *vf;
4653         u16 vf_id;
4654
4655         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
4656                 queue, qtx_ctl);
4657
4658         /* Queue belongs to VF, find the VF and issue VF reset */
4659         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
4660             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
4661                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
4662                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
4663                 vf_id -= hw->func_caps.vf_base_id;
4664                 vf = &pf->vf[vf_id];
4665                 i40e_vc_notify_vf_reset(vf);
4666                 /* Allow VF to process pending reset notification */
4667                 msleep(20);
4668                 i40e_reset_vf(vf, false);
4669         }
4670 }
4671
4672 /**
4673  * i40e_service_event_complete - Finish up the service event
4674  * @pf: board private structure
4675  **/
4676 static void i40e_service_event_complete(struct i40e_pf *pf)
4677 {
4678         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
4679
4680         /* flush memory to make sure state is correct before next watchog */
4681         smp_mb__before_clear_bit();
4682         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
4683 }
4684
4685 /**
4686  * i40e_get_current_fd_count - Get the count of FD filters programmed in the HW
4687  * @pf: board private structure
4688  **/
4689 int i40e_get_current_fd_count(struct i40e_pf *pf)
4690 {
4691         int val, fcnt_prog;
4692         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
4693         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
4694                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
4695                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
4696         return fcnt_prog;
4697 }
4698
4699 /**
4700  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
4701  * @pf: board private structure
4702  **/
4703 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
4704 {
4705         u32 fcnt_prog, fcnt_avail;
4706
4707         /* Check if, FD SB or ATR was auto disabled and if there is enough room
4708          * to re-enable
4709          */
4710         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4711             (pf->flags & I40E_FLAG_FD_SB_ENABLED))
4712                 return;
4713         fcnt_prog = i40e_get_current_fd_count(pf);
4714         fcnt_avail = pf->hw.fdir_shared_filter_count +
4715                                                pf->fdir_pf_filter_count;
4716         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) {
4717                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
4718                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
4719                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
4720                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
4721                 }
4722         }
4723         /* Wait for some more space to be available to turn on ATR */
4724         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
4725                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4726                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
4727                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4728                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
4729                 }
4730         }
4731 }
4732
4733 /**
4734  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
4735  * @pf: board private structure
4736  **/
4737 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
4738 {
4739         if (!(pf->flags & I40E_FLAG_FDIR_REQUIRES_REINIT))
4740                 return;
4741
4742         /* if interface is down do nothing */
4743         if (test_bit(__I40E_DOWN, &pf->state))
4744                 return;
4745         i40e_fdir_check_and_reenable(pf);
4746
4747         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4748             (pf->flags & I40E_FLAG_FD_SB_ENABLED))
4749                 pf->flags &= ~I40E_FLAG_FDIR_REQUIRES_REINIT;
4750 }
4751
4752 /**
4753  * i40e_vsi_link_event - notify VSI of a link event
4754  * @vsi: vsi to be notified
4755  * @link_up: link up or down
4756  **/
4757 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
4758 {
4759         if (!vsi)
4760                 return;
4761
4762         switch (vsi->type) {
4763         case I40E_VSI_MAIN:
4764                 if (!vsi->netdev || !vsi->netdev_registered)
4765                         break;
4766
4767                 if (link_up) {
4768                         netif_carrier_on(vsi->netdev);
4769                         netif_tx_wake_all_queues(vsi->netdev);
4770                 } else {
4771                         netif_carrier_off(vsi->netdev);
4772                         netif_tx_stop_all_queues(vsi->netdev);
4773                 }
4774                 break;
4775
4776         case I40E_VSI_SRIOV:
4777                 break;
4778
4779         case I40E_VSI_VMDQ2:
4780         case I40E_VSI_CTRL:
4781         case I40E_VSI_MIRROR:
4782         default:
4783                 /* there is no notification for other VSIs */
4784                 break;
4785         }
4786 }
4787
4788 /**
4789  * i40e_veb_link_event - notify elements on the veb of a link event
4790  * @veb: veb to be notified
4791  * @link_up: link up or down
4792  **/
4793 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
4794 {
4795         struct i40e_pf *pf;
4796         int i;
4797
4798         if (!veb || !veb->pf)
4799                 return;
4800         pf = veb->pf;
4801
4802         /* depth first... */
4803         for (i = 0; i < I40E_MAX_VEB; i++)
4804                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
4805                         i40e_veb_link_event(pf->veb[i], link_up);
4806
4807         /* ... now the local VSIs */
4808         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4809                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
4810                         i40e_vsi_link_event(pf->vsi[i], link_up);
4811 }
4812
4813 /**
4814  * i40e_link_event - Update netif_carrier status
4815  * @pf: board private structure
4816  **/
4817 static void i40e_link_event(struct i40e_pf *pf)
4818 {
4819         bool new_link, old_link;
4820
4821         new_link = (pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP);
4822         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
4823
4824         if (new_link == old_link)
4825                 return;
4826
4827         if (!test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state))
4828                 netdev_info(pf->vsi[pf->lan_vsi]->netdev,
4829                             "NIC Link is %s\n", (new_link ? "Up" : "Down"));
4830
4831         /* Notify the base of the switch tree connected to
4832          * the link.  Floating VEBs are not notified.
4833          */
4834         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
4835                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
4836         else
4837                 i40e_vsi_link_event(pf->vsi[pf->lan_vsi], new_link);
4838
4839         if (pf->vf)
4840                 i40e_vc_notify_link_state(pf);
4841
4842         if (pf->flags & I40E_FLAG_PTP)
4843                 i40e_ptp_set_increment(pf);
4844 }
4845
4846 /**
4847  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
4848  * @pf: board private structure
4849  *
4850  * Set the per-queue flags to request a check for stuck queues in the irq
4851  * clean functions, then force interrupts to be sure the irq clean is called.
4852  **/
4853 static void i40e_check_hang_subtask(struct i40e_pf *pf)
4854 {
4855         int i, v;
4856
4857         /* If we're down or resetting, just bail */
4858         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
4859                 return;
4860
4861         /* for each VSI/netdev
4862          *     for each Tx queue
4863          *         set the check flag
4864          *     for each q_vector
4865          *         force an interrupt
4866          */
4867         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4868                 struct i40e_vsi *vsi = pf->vsi[v];
4869                 int armed = 0;
4870
4871                 if (!pf->vsi[v] ||
4872                     test_bit(__I40E_DOWN, &vsi->state) ||
4873                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
4874                         continue;
4875
4876                 for (i = 0; i < vsi->num_queue_pairs; i++) {
4877                         set_check_for_tx_hang(vsi->tx_rings[i]);
4878                         if (test_bit(__I40E_HANG_CHECK_ARMED,
4879                                      &vsi->tx_rings[i]->state))
4880                                 armed++;
4881                 }
4882
4883                 if (armed) {
4884                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
4885                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
4886                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
4887                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
4888                         } else {
4889                                 u16 vec = vsi->base_vector - 1;
4890                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
4891                                            I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
4892                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
4893                                         wr32(&vsi->back->hw,
4894                                              I40E_PFINT_DYN_CTLN(vec), val);
4895                         }
4896                         i40e_flush(&vsi->back->hw);
4897                 }
4898         }
4899 }
4900
4901 /**
4902  * i40e_watchdog_subtask - Check and bring link up
4903  * @pf: board private structure
4904  **/
4905 static void i40e_watchdog_subtask(struct i40e_pf *pf)
4906 {
4907         int i;
4908
4909         /* if interface is down do nothing */
4910         if (test_bit(__I40E_DOWN, &pf->state) ||
4911             test_bit(__I40E_CONFIG_BUSY, &pf->state))
4912                 return;
4913
4914         /* Update the stats for active netdevs so the network stack
4915          * can look at updated numbers whenever it cares to
4916          */
4917         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4918                 if (pf->vsi[i] && pf->vsi[i]->netdev)
4919                         i40e_update_stats(pf->vsi[i]);
4920
4921         /* Update the stats for the active switching components */
4922         for (i = 0; i < I40E_MAX_VEB; i++)
4923                 if (pf->veb[i])
4924                         i40e_update_veb_stats(pf->veb[i]);
4925
4926         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
4927 }
4928
4929 /**
4930  * i40e_reset_subtask - Set up for resetting the device and driver
4931  * @pf: board private structure
4932  **/
4933 static void i40e_reset_subtask(struct i40e_pf *pf)
4934 {
4935         u32 reset_flags = 0;
4936
4937         rtnl_lock();
4938         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
4939                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
4940                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
4941         }
4942         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
4943                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
4944                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4945         }
4946         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
4947                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
4948                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
4949         }
4950         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
4951                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
4952                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
4953         }
4954
4955         /* If there's a recovery already waiting, it takes
4956          * precedence before starting a new reset sequence.
4957          */
4958         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
4959                 i40e_handle_reset_warning(pf);
4960                 goto unlock;
4961         }
4962
4963         /* If we're already down or resetting, just bail */
4964         if (reset_flags &&
4965             !test_bit(__I40E_DOWN, &pf->state) &&
4966             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
4967                 i40e_do_reset(pf, reset_flags);
4968
4969 unlock:
4970         rtnl_unlock();
4971 }
4972
4973 /**
4974  * i40e_handle_link_event - Handle link event
4975  * @pf: board private structure
4976  * @e: event info posted on ARQ
4977  **/
4978 static void i40e_handle_link_event(struct i40e_pf *pf,
4979                                    struct i40e_arq_event_info *e)
4980 {
4981         struct i40e_hw *hw = &pf->hw;
4982         struct i40e_aqc_get_link_status *status =
4983                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
4984         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
4985
4986         /* save off old link status information */
4987         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
4988                sizeof(pf->hw.phy.link_info_old));
4989
4990         /* update link status */
4991         hw_link_info->phy_type = (enum i40e_aq_phy_type)status->phy_type;
4992         hw_link_info->link_speed = (enum i40e_aq_link_speed)status->link_speed;
4993         hw_link_info->link_info = status->link_info;
4994         hw_link_info->an_info = status->an_info;
4995         hw_link_info->ext_info = status->ext_info;
4996         hw_link_info->lse_enable =
4997                 le16_to_cpu(status->command_flags) &
4998                             I40E_AQ_LSE_ENABLE;
4999
5000         /* process the event */
5001         i40e_link_event(pf);
5002
5003         /* Do a new status request to re-enable LSE reporting
5004          * and load new status information into the hw struct,
5005          * then see if the status changed while processing the
5006          * initial event.
5007          */
5008         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
5009         i40e_link_event(pf);
5010 }
5011
5012 /**
5013  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5014  * @pf: board private structure
5015  **/
5016 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5017 {
5018         struct i40e_arq_event_info event;
5019         struct i40e_hw *hw = &pf->hw;
5020         u16 pending, i = 0;
5021         i40e_status ret;
5022         u16 opcode;
5023         u32 val;
5024
5025         if (!test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state))
5026                 return;
5027
5028         event.msg_size = I40E_MAX_AQ_BUF_SIZE;
5029         event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
5030         if (!event.msg_buf)
5031                 return;
5032
5033         do {
5034                 event.msg_size = I40E_MAX_AQ_BUF_SIZE; /* reinit each time */
5035                 ret = i40e_clean_arq_element(hw, &event, &pending);
5036                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK) {
5037                         dev_info(&pf->pdev->dev, "No ARQ event found\n");
5038                         break;
5039                 } else if (ret) {
5040                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5041                         break;
5042                 }
5043
5044                 opcode = le16_to_cpu(event.desc.opcode);
5045                 switch (opcode) {
5046
5047                 case i40e_aqc_opc_get_link_status:
5048                         i40e_handle_link_event(pf, &event);
5049                         break;
5050                 case i40e_aqc_opc_send_msg_to_pf:
5051                         ret = i40e_vc_process_vf_msg(pf,
5052                                         le16_to_cpu(event.desc.retval),
5053                                         le32_to_cpu(event.desc.cookie_high),
5054                                         le32_to_cpu(event.desc.cookie_low),
5055                                         event.msg_buf,
5056                                         event.msg_size);
5057                         break;
5058                 case i40e_aqc_opc_lldp_update_mib:
5059                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5060 #ifdef CONFIG_I40E_DCB
5061                         rtnl_lock();
5062                         ret = i40e_handle_lldp_event(pf, &event);
5063                         rtnl_unlock();
5064 #endif /* CONFIG_I40E_DCB */
5065                         break;
5066                 case i40e_aqc_opc_event_lan_overflow:
5067                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5068                         i40e_handle_lan_overflow_event(pf, &event);
5069                         break;
5070                 case i40e_aqc_opc_send_msg_to_peer:
5071                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5072                         break;
5073                 default:
5074                         dev_info(&pf->pdev->dev,
5075                                  "ARQ Error: Unknown event 0x%04x received\n",
5076                                  opcode);
5077                         break;
5078                 }
5079         } while (pending && (i++ < pf->adminq_work_limit));
5080
5081         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5082         /* re-enable Admin queue interrupt cause */
5083         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5084         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5085         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5086         i40e_flush(hw);
5087
5088         kfree(event.msg_buf);
5089 }
5090
5091 /**
5092  * i40e_verify_eeprom - make sure eeprom is good to use
5093  * @pf: board private structure
5094  **/
5095 static void i40e_verify_eeprom(struct i40e_pf *pf)
5096 {
5097         int err;
5098
5099         err = i40e_diag_eeprom_test(&pf->hw);
5100         if (err) {
5101                 /* retry in case of garbage read */
5102                 err = i40e_diag_eeprom_test(&pf->hw);
5103                 if (err) {
5104                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5105                                  err);
5106                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5107                 }
5108         }
5109
5110         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5111                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5112                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5113         }
5114 }
5115
5116 /**
5117  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5118  * @veb: pointer to the VEB instance
5119  *
5120  * This is a recursive function that first builds the attached VSIs then
5121  * recurses in to build the next layer of VEB.  We track the connections
5122  * through our own index numbers because the seid's from the HW could
5123  * change across the reset.
5124  **/
5125 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5126 {
5127         struct i40e_vsi *ctl_vsi = NULL;
5128         struct i40e_pf *pf = veb->pf;
5129         int v, veb_idx;
5130         int ret;
5131
5132         /* build VSI that owns this VEB, temporarily attached to base VEB */
5133         for (v = 0; v < pf->hw.func_caps.num_vsis && !ctl_vsi; v++) {
5134                 if (pf->vsi[v] &&
5135                     pf->vsi[v]->veb_idx == veb->idx &&
5136                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5137                         ctl_vsi = pf->vsi[v];
5138                         break;
5139                 }
5140         }
5141         if (!ctl_vsi) {
5142                 dev_info(&pf->pdev->dev,
5143                          "missing owner VSI for veb_idx %d\n", veb->idx);
5144                 ret = -ENOENT;
5145                 goto end_reconstitute;
5146         }
5147         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5148                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5149         ret = i40e_add_vsi(ctl_vsi);
5150         if (ret) {
5151                 dev_info(&pf->pdev->dev,
5152                          "rebuild of owner VSI failed: %d\n", ret);
5153                 goto end_reconstitute;
5154         }
5155         i40e_vsi_reset_stats(ctl_vsi);
5156
5157         /* create the VEB in the switch and move the VSI onto the VEB */
5158         ret = i40e_add_veb(veb, ctl_vsi);
5159         if (ret)
5160                 goto end_reconstitute;
5161
5162         /* create the remaining VSIs attached to this VEB */
5163         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
5164                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5165                         continue;
5166
5167                 if (pf->vsi[v]->veb_idx == veb->idx) {
5168                         struct i40e_vsi *vsi = pf->vsi[v];
5169                         vsi->uplink_seid = veb->seid;
5170                         ret = i40e_add_vsi(vsi);
5171                         if (ret) {
5172                                 dev_info(&pf->pdev->dev,
5173                                          "rebuild of vsi_idx %d failed: %d\n",
5174                                          v, ret);
5175                                 goto end_reconstitute;
5176                         }
5177                         i40e_vsi_reset_stats(vsi);
5178                 }
5179         }
5180
5181         /* create any VEBs attached to this VEB - RECURSION */
5182         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5183                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5184                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5185                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5186                         if (ret)
5187                                 break;
5188                 }
5189         }
5190
5191 end_reconstitute:
5192         return ret;
5193 }
5194
5195 /**
5196  * i40e_get_capabilities - get info about the HW
5197  * @pf: the PF struct
5198  **/
5199 static int i40e_get_capabilities(struct i40e_pf *pf)
5200 {
5201         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5202         u16 data_size;
5203         int buf_len;
5204         int err;
5205
5206         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5207         do {
5208                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5209                 if (!cap_buf)
5210                         return -ENOMEM;
5211
5212                 /* this loads the data into the hw struct for us */
5213                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5214                                             &data_size,
5215                                             i40e_aqc_opc_list_func_capabilities,
5216                                             NULL);
5217                 /* data loaded, buffer no longer needed */
5218                 kfree(cap_buf);
5219
5220                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
5221                         /* retry with a larger buffer */
5222                         buf_len = data_size;
5223                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
5224                         dev_info(&pf->pdev->dev,
5225                                  "capability discovery failed: aq=%d\n",
5226                                  pf->hw.aq.asq_last_status);
5227                         return -ENODEV;
5228                 }
5229         } while (err);
5230
5231         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
5232             (pf->hw.aq.fw_maj_ver < 2)) {
5233                 pf->hw.func_caps.num_msix_vectors++;
5234                 pf->hw.func_caps.num_msix_vectors_vf++;
5235         }
5236
5237         if (pf->hw.debug_mask & I40E_DEBUG_USER)
5238                 dev_info(&pf->pdev->dev,
5239                          "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",
5240                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
5241                          pf->hw.func_caps.num_msix_vectors,
5242                          pf->hw.func_caps.num_msix_vectors_vf,
5243                          pf->hw.func_caps.fd_filters_guaranteed,
5244                          pf->hw.func_caps.fd_filters_best_effort,
5245                          pf->hw.func_caps.num_tx_qp,
5246                          pf->hw.func_caps.num_vsis);
5247
5248 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
5249                        + pf->hw.func_caps.num_vfs)
5250         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
5251                 dev_info(&pf->pdev->dev,
5252                          "got num_vsis %d, setting num_vsis to %d\n",
5253                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
5254                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
5255         }
5256
5257         return 0;
5258 }
5259
5260 static int i40e_vsi_clear(struct i40e_vsi *vsi);
5261
5262 /**
5263  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
5264  * @pf: board private structure
5265  **/
5266 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
5267 {
5268         struct i40e_vsi *vsi;
5269         int i;
5270
5271         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
5272                 return;
5273
5274         /* find existing VSI and see if it needs configuring */
5275         vsi = NULL;
5276         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
5277                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5278                         vsi = pf->vsi[i];
5279                         break;
5280                 }
5281         }
5282
5283         /* create a new VSI if none exists */
5284         if (!vsi) {
5285                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
5286                                      pf->vsi[pf->lan_vsi]->seid, 0);
5287                 if (!vsi) {
5288                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
5289                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
5290                         return;
5291                 }
5292         }
5293
5294         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
5295 }
5296
5297 /**
5298  * i40e_fdir_teardown - release the Flow Director resources
5299  * @pf: board private structure
5300  **/
5301 static void i40e_fdir_teardown(struct i40e_pf *pf)
5302 {
5303         int i;
5304
5305         i40e_fdir_filter_exit(pf);
5306         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
5307                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5308                         i40e_vsi_release(pf->vsi[i]);
5309                         break;
5310                 }
5311         }
5312 }
5313
5314 /**
5315  * i40e_prep_for_reset - prep for the core to reset
5316  * @pf: board private structure
5317  *
5318  * Close up the VFs and other things in prep for pf Reset.
5319   **/
5320 static int i40e_prep_for_reset(struct i40e_pf *pf)
5321 {
5322         struct i40e_hw *hw = &pf->hw;
5323         i40e_status ret;
5324         u32 v;
5325
5326         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
5327         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
5328                 return 0;
5329
5330         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
5331
5332         if (i40e_check_asq_alive(hw))
5333                 i40e_vc_notify_reset(pf);
5334
5335         /* quiesce the VSIs and their queues that are not already DOWN */
5336         i40e_pf_quiesce_all_vsi(pf);
5337
5338         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
5339                 if (pf->vsi[v])
5340                         pf->vsi[v]->seid = 0;
5341         }
5342
5343         i40e_shutdown_adminq(&pf->hw);
5344
5345         /* call shutdown HMC */
5346         ret = i40e_shutdown_lan_hmc(hw);
5347         if (ret) {
5348                 dev_info(&pf->pdev->dev, "shutdown_lan_hmc failed: %d\n", ret);
5349                 clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
5350         }
5351         return ret;
5352 }
5353
5354 /**
5355  * i40e_reset_and_rebuild - reset and rebuild using a saved config
5356  * @pf: board private structure
5357  * @reinit: if the Main VSI needs to re-initialized.
5358  **/
5359 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
5360 {
5361         struct i40e_driver_version dv;
5362         struct i40e_hw *hw = &pf->hw;
5363         i40e_status ret;
5364         u32 v;
5365
5366         /* Now we wait for GRST to settle out.
5367          * We don't have to delete the VEBs or VSIs from the hw switch
5368          * because the reset will make them disappear.
5369          */
5370         ret = i40e_pf_reset(hw);
5371         if (ret)
5372                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
5373         pf->pfr_count++;
5374
5375         if (test_bit(__I40E_DOWN, &pf->state))
5376                 goto end_core_reset;
5377         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
5378
5379         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
5380         ret = i40e_init_adminq(&pf->hw);
5381         if (ret) {
5382                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
5383                 goto end_core_reset;
5384         }
5385
5386         /* re-verify the eeprom if we just had an EMP reset */
5387         if (test_bit(__I40E_EMP_RESET_REQUESTED, &pf->state)) {
5388                 clear_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
5389                 i40e_verify_eeprom(pf);
5390         }
5391
5392         ret = i40e_get_capabilities(pf);
5393         if (ret) {
5394                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
5395                          ret);
5396                 goto end_core_reset;
5397         }
5398
5399         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
5400                                 hw->func_caps.num_rx_qp,
5401                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
5402         if (ret) {
5403                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
5404                 goto end_core_reset;
5405         }
5406         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
5407         if (ret) {
5408                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
5409                 goto end_core_reset;
5410         }
5411
5412 #ifdef CONFIG_I40E_DCB
5413         ret = i40e_init_pf_dcb(pf);
5414         if (ret) {
5415                 dev_info(&pf->pdev->dev, "init_pf_dcb failed: %d\n", ret);
5416                 goto end_core_reset;
5417         }
5418 #endif /* CONFIG_I40E_DCB */
5419
5420         /* do basic switch setup */
5421         ret = i40e_setup_pf_switch(pf, reinit);
5422         if (ret)
5423                 goto end_core_reset;
5424
5425         /* Rebuild the VSIs and VEBs that existed before reset.
5426          * They are still in our local switch element arrays, so only
5427          * need to rebuild the switch model in the HW.
5428          *
5429          * If there were VEBs but the reconstitution failed, we'll try
5430          * try to recover minimal use by getting the basic PF VSI working.
5431          */
5432         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
5433                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
5434                 /* find the one VEB connected to the MAC, and find orphans */
5435                 for (v = 0; v < I40E_MAX_VEB; v++) {
5436                         if (!pf->veb[v])
5437                                 continue;
5438
5439                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
5440                             pf->veb[v]->uplink_seid == 0) {
5441                                 ret = i40e_reconstitute_veb(pf->veb[v]);
5442
5443                                 if (!ret)
5444                                         continue;
5445
5446                                 /* If Main VEB failed, we're in deep doodoo,
5447                                  * so give up rebuilding the switch and set up
5448                                  * for minimal rebuild of PF VSI.
5449                                  * If orphan failed, we'll report the error
5450                                  * but try to keep going.
5451                                  */
5452                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
5453                                         dev_info(&pf->pdev->dev,
5454                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
5455                                                  ret);
5456                                         pf->vsi[pf->lan_vsi]->uplink_seid
5457                                                                 = pf->mac_seid;
5458                                         break;
5459                                 } else if (pf->veb[v]->uplink_seid == 0) {
5460                                         dev_info(&pf->pdev->dev,
5461                                                  "rebuild of orphan VEB failed: %d\n",
5462                                                  ret);
5463                                 }
5464                         }
5465                 }
5466         }
5467
5468         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
5469                 dev_info(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
5470                 /* no VEB, so rebuild only the Main VSI */
5471                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
5472                 if (ret) {
5473                         dev_info(&pf->pdev->dev,
5474                                  "rebuild of Main VSI failed: %d\n", ret);
5475                         goto end_core_reset;
5476                 }
5477         }
5478
5479         /* reinit the misc interrupt */
5480         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5481                 ret = i40e_setup_misc_vector(pf);
5482
5483         /* restart the VSIs that were rebuilt and running before the reset */
5484         i40e_pf_unquiesce_all_vsi(pf);
5485
5486         if (pf->num_alloc_vfs) {
5487                 for (v = 0; v < pf->num_alloc_vfs; v++)
5488                         i40e_reset_vf(&pf->vf[v], true);
5489         }
5490
5491         /* tell the firmware that we're starting */
5492         dv.major_version = DRV_VERSION_MAJOR;
5493         dv.minor_version = DRV_VERSION_MINOR;
5494         dv.build_version = DRV_VERSION_BUILD;
5495         dv.subbuild_version = 0;
5496         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
5497
5498         dev_info(&pf->pdev->dev, "reset complete\n");
5499
5500 end_core_reset:
5501         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
5502 }
5503
5504 /**
5505  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
5506  * @pf: board private structure
5507  *
5508  * Close up the VFs and other things in prep for a Core Reset,
5509  * then get ready to rebuild the world.
5510  **/
5511 static void i40e_handle_reset_warning(struct i40e_pf *pf)
5512 {
5513         i40e_status ret;
5514
5515         ret = i40e_prep_for_reset(pf);
5516         if (!ret)
5517                 i40e_reset_and_rebuild(pf, false);
5518 }
5519
5520 /**
5521  * i40e_handle_mdd_event
5522  * @pf: pointer to the pf structure
5523  *
5524  * Called from the MDD irq handler to identify possibly malicious vfs
5525  **/
5526 static void i40e_handle_mdd_event(struct i40e_pf *pf)
5527 {
5528         struct i40e_hw *hw = &pf->hw;
5529         bool mdd_detected = false;
5530         struct i40e_vf *vf;
5531         u32 reg;
5532         int i;
5533
5534         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
5535                 return;
5536
5537         /* find what triggered the MDD event */
5538         reg = rd32(hw, I40E_GL_MDET_TX);
5539         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
5540                 u8 func = (reg & I40E_GL_MDET_TX_FUNCTION_MASK)
5541                                 >> I40E_GL_MDET_TX_FUNCTION_SHIFT;
5542                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_SHIFT)
5543                                 >> I40E_GL_MDET_TX_EVENT_SHIFT;
5544                 u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK)
5545                                 >> I40E_GL_MDET_TX_QUEUE_SHIFT;
5546                 dev_info(&pf->pdev->dev,
5547                          "Malicious Driver Detection event 0x%02x on TX queue %d of function 0x%02x\n",
5548                          event, queue, func);
5549                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
5550                 mdd_detected = true;
5551         }
5552         reg = rd32(hw, I40E_GL_MDET_RX);
5553         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
5554                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK)
5555                                 >> I40E_GL_MDET_RX_FUNCTION_SHIFT;
5556                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_SHIFT)
5557                                 >> I40E_GL_MDET_RX_EVENT_SHIFT;
5558                 u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK)
5559                                 >> I40E_GL_MDET_RX_QUEUE_SHIFT;
5560                 dev_info(&pf->pdev->dev,
5561                          "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
5562                          event, queue, func);
5563                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
5564                 mdd_detected = true;
5565         }
5566
5567         /* see if one of the VFs needs its hand slapped */
5568         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
5569                 vf = &(pf->vf[i]);
5570                 reg = rd32(hw, I40E_VP_MDET_TX(i));
5571                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
5572                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
5573                         vf->num_mdd_events++;
5574                         dev_info(&pf->pdev->dev, "MDD TX event on VF %d\n", i);
5575                 }
5576
5577                 reg = rd32(hw, I40E_VP_MDET_RX(i));
5578                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
5579                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
5580                         vf->num_mdd_events++;
5581                         dev_info(&pf->pdev->dev, "MDD RX event on VF %d\n", i);
5582                 }
5583
5584                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
5585                         dev_info(&pf->pdev->dev,
5586                                  "Too many MDD events on VF %d, disabled\n", i);
5587                         dev_info(&pf->pdev->dev,
5588                                  "Use PF Control I/F to re-enable the VF\n");
5589                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
5590                 }
5591         }
5592
5593         /* re-enable mdd interrupt cause */
5594         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
5595         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
5596         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
5597         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
5598         i40e_flush(hw);
5599 }
5600
5601 #ifdef CONFIG_I40E_VXLAN
5602 /**
5603  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
5604  * @pf: board private structure
5605  **/
5606 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
5607 {
5608         struct i40e_hw *hw = &pf->hw;
5609         i40e_status ret;
5610         u8 filter_index;
5611         __be16 port;
5612         int i;
5613
5614         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
5615                 return;
5616
5617         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
5618
5619         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
5620                 if (pf->pending_vxlan_bitmap & (1 << i)) {
5621                         pf->pending_vxlan_bitmap &= ~(1 << i);
5622                         port = pf->vxlan_ports[i];
5623                         ret = port ?
5624                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
5625                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
5626                                                      &filter_index, NULL)
5627                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
5628
5629                         if (ret) {
5630                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
5631                                          port ? "adding" : "deleting",
5632                                          ntohs(port), port ? i : i);
5633
5634                                 pf->vxlan_ports[i] = 0;
5635                         } else {
5636                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
5637                                          port ? "Added" : "Deleted",
5638                                          ntohs(port), port ? i : filter_index);
5639                         }
5640                 }
5641         }
5642 }
5643
5644 #endif
5645 /**
5646  * i40e_service_task - Run the driver's async subtasks
5647  * @work: pointer to work_struct containing our data
5648  **/
5649 static void i40e_service_task(struct work_struct *work)
5650 {
5651         struct i40e_pf *pf = container_of(work,
5652                                           struct i40e_pf,
5653                                           service_task);
5654         unsigned long start_time = jiffies;
5655
5656         i40e_reset_subtask(pf);
5657         i40e_handle_mdd_event(pf);
5658         i40e_vc_process_vflr_event(pf);
5659         i40e_watchdog_subtask(pf);
5660         i40e_fdir_reinit_subtask(pf);
5661         i40e_check_hang_subtask(pf);
5662         i40e_sync_filters_subtask(pf);
5663 #ifdef CONFIG_I40E_VXLAN
5664         i40e_sync_vxlan_filters_subtask(pf);
5665 #endif
5666         i40e_clean_adminq_subtask(pf);
5667
5668         i40e_service_event_complete(pf);
5669
5670         /* If the tasks have taken longer than one timer cycle or there
5671          * is more work to be done, reschedule the service task now
5672          * rather than wait for the timer to tick again.
5673          */
5674         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
5675             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
5676             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
5677             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
5678                 i40e_service_event_schedule(pf);
5679 }
5680
5681 /**
5682  * i40e_service_timer - timer callback
5683  * @data: pointer to PF struct
5684  **/
5685 static void i40e_service_timer(unsigned long data)
5686 {
5687         struct i40e_pf *pf = (struct i40e_pf *)data;
5688
5689         mod_timer(&pf->service_timer,
5690                   round_jiffies(jiffies + pf->service_timer_period));
5691         i40e_service_event_schedule(pf);
5692 }
5693
5694 /**
5695  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
5696  * @vsi: the VSI being configured
5697  **/
5698 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
5699 {
5700         struct i40e_pf *pf = vsi->back;
5701
5702         switch (vsi->type) {
5703         case I40E_VSI_MAIN:
5704                 vsi->alloc_queue_pairs = pf->num_lan_qps;
5705                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5706                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5707                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5708                         vsi->num_q_vectors = pf->num_lan_msix;
5709                 else
5710                         vsi->num_q_vectors = 1;
5711
5712                 break;
5713
5714         case I40E_VSI_FDIR:
5715                 vsi->alloc_queue_pairs = 1;
5716                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
5717                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5718                 vsi->num_q_vectors = 1;
5719                 break;
5720
5721         case I40E_VSI_VMDQ2:
5722                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
5723                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5724                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5725                 vsi->num_q_vectors = pf->num_vmdq_msix;
5726                 break;
5727
5728         case I40E_VSI_SRIOV:
5729                 vsi->alloc_queue_pairs = pf->num_vf_qps;
5730                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5731                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5732                 break;
5733
5734         default:
5735                 WARN_ON(1);
5736                 return -ENODATA;
5737         }
5738
5739         return 0;
5740 }
5741
5742 /**
5743  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
5744  * @type: VSI pointer
5745  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
5746  *
5747  * On error: returns error code (negative)
5748  * On success: returns 0
5749  **/
5750 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
5751 {
5752         int size;
5753         int ret = 0;
5754
5755         /* allocate memory for both Tx and Rx ring pointers */
5756         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
5757         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
5758         if (!vsi->tx_rings)
5759                 return -ENOMEM;
5760         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
5761
5762         if (alloc_qvectors) {
5763                 /* allocate memory for q_vector pointers */
5764                 size = sizeof(struct i40e_q_vectors *) * vsi->num_q_vectors;
5765                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
5766                 if (!vsi->q_vectors) {
5767                         ret = -ENOMEM;
5768                         goto err_vectors;
5769                 }
5770         }
5771         return ret;
5772
5773 err_vectors:
5774         kfree(vsi->tx_rings);
5775         return ret;
5776 }
5777
5778 /**
5779  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
5780  * @pf: board private structure
5781  * @type: type of VSI
5782  *
5783  * On error: returns error code (negative)
5784  * On success: returns vsi index in PF (positive)
5785  **/
5786 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
5787 {
5788         int ret = -ENODEV;
5789         struct i40e_vsi *vsi;
5790         int vsi_idx;
5791         int i;
5792
5793         /* Need to protect the allocation of the VSIs at the PF level */
5794         mutex_lock(&pf->switch_mutex);
5795
5796         /* VSI list may be fragmented if VSI creation/destruction has
5797          * been happening.  We can afford to do a quick scan to look
5798          * for any free VSIs in the list.
5799          *
5800          * find next empty vsi slot, looping back around if necessary
5801          */
5802         i = pf->next_vsi;
5803         while (i < pf->hw.func_caps.num_vsis && pf->vsi[i])
5804                 i++;
5805         if (i >= pf->hw.func_caps.num_vsis) {
5806                 i = 0;
5807                 while (i < pf->next_vsi && pf->vsi[i])
5808                         i++;
5809         }
5810
5811         if (i < pf->hw.func_caps.num_vsis && !pf->vsi[i]) {
5812                 vsi_idx = i;             /* Found one! */
5813         } else {
5814                 ret = -ENODEV;
5815                 goto unlock_pf;  /* out of VSI slots! */
5816         }
5817         pf->next_vsi = ++i;
5818
5819         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
5820         if (!vsi) {
5821                 ret = -ENOMEM;
5822                 goto unlock_pf;
5823         }
5824         vsi->type = type;
5825         vsi->back = pf;
5826         set_bit(__I40E_DOWN, &vsi->state);
5827         vsi->flags = 0;
5828         vsi->idx = vsi_idx;
5829         vsi->rx_itr_setting = pf->rx_itr_default;
5830         vsi->tx_itr_setting = pf->tx_itr_default;
5831         vsi->netdev_registered = false;
5832         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
5833         INIT_LIST_HEAD(&vsi->mac_filter_list);
5834
5835         ret = i40e_set_num_rings_in_vsi(vsi);
5836         if (ret)
5837                 goto err_rings;
5838
5839         ret = i40e_vsi_alloc_arrays(vsi, true);
5840         if (ret)
5841                 goto err_rings;
5842
5843         /* Setup default MSIX irq handler for VSI */
5844         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
5845
5846         pf->vsi[vsi_idx] = vsi;
5847         ret = vsi_idx;
5848         goto unlock_pf;
5849
5850 err_rings:
5851         pf->next_vsi = i - 1;
5852         kfree(vsi);
5853 unlock_pf:
5854         mutex_unlock(&pf->switch_mutex);
5855         return ret;
5856 }
5857
5858 /**
5859  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
5860  * @type: VSI pointer
5861  * @free_qvectors: a bool to specify if q_vectors need to be freed.
5862  *
5863  * On error: returns error code (negative)
5864  * On success: returns 0
5865  **/
5866 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
5867 {
5868         /* free the ring and vector containers */
5869         if (free_qvectors) {
5870                 kfree(vsi->q_vectors);
5871                 vsi->q_vectors = NULL;
5872         }
5873         kfree(vsi->tx_rings);
5874         vsi->tx_rings = NULL;
5875         vsi->rx_rings = NULL;
5876 }
5877
5878 /**
5879  * i40e_vsi_clear - Deallocate the VSI provided
5880  * @vsi: the VSI being un-configured
5881  **/
5882 static int i40e_vsi_clear(struct i40e_vsi *vsi)
5883 {
5884         struct i40e_pf *pf;
5885
5886         if (!vsi)
5887                 return 0;
5888
5889         if (!vsi->back)
5890                 goto free_vsi;
5891         pf = vsi->back;
5892
5893         mutex_lock(&pf->switch_mutex);
5894         if (!pf->vsi[vsi->idx]) {
5895                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
5896                         vsi->idx, vsi->idx, vsi, vsi->type);
5897                 goto unlock_vsi;
5898         }
5899
5900         if (pf->vsi[vsi->idx] != vsi) {
5901                 dev_err(&pf->pdev->dev,
5902                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
5903                         pf->vsi[vsi->idx]->idx,
5904                         pf->vsi[vsi->idx],
5905                         pf->vsi[vsi->idx]->type,
5906                         vsi->idx, vsi, vsi->type);
5907                 goto unlock_vsi;
5908         }
5909
5910         /* updates the pf for this cleared vsi */
5911         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
5912         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
5913
5914         i40e_vsi_free_arrays(vsi, true);
5915
5916         pf->vsi[vsi->idx] = NULL;
5917         if (vsi->idx < pf->next_vsi)
5918                 pf->next_vsi = vsi->idx;
5919
5920 unlock_vsi:
5921         mutex_unlock(&pf->switch_mutex);
5922 free_vsi:
5923         kfree(vsi);
5924
5925         return 0;
5926 }
5927
5928 /**
5929  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
5930  * @vsi: the VSI being cleaned
5931  **/
5932 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
5933 {
5934         int i;
5935
5936         if (vsi->tx_rings && vsi->tx_rings[0]) {
5937                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
5938                         kfree_rcu(vsi->tx_rings[i], rcu);
5939                         vsi->tx_rings[i] = NULL;
5940                         vsi->rx_rings[i] = NULL;
5941                 }
5942         }
5943 }
5944
5945 /**
5946  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
5947  * @vsi: the VSI being configured
5948  **/
5949 static int i40e_alloc_rings(struct i40e_vsi *vsi)
5950 {
5951         struct i40e_pf *pf = vsi->back;
5952         int i;
5953
5954         /* Set basic values in the rings to be used later during open() */
5955         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
5956                 struct i40e_ring *tx_ring;
5957                 struct i40e_ring *rx_ring;
5958
5959                 /* allocate space for both Tx and Rx in one shot */
5960                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
5961                 if (!tx_ring)
5962                         goto err_out;
5963
5964                 tx_ring->queue_index = i;
5965                 tx_ring->reg_idx = vsi->base_queue + i;
5966                 tx_ring->ring_active = false;
5967                 tx_ring->vsi = vsi;
5968                 tx_ring->netdev = vsi->netdev;
5969                 tx_ring->dev = &pf->pdev->dev;
5970                 tx_ring->count = vsi->num_desc;
5971                 tx_ring->size = 0;
5972                 tx_ring->dcb_tc = 0;
5973                 vsi->tx_rings[i] = tx_ring;
5974
5975                 rx_ring = &tx_ring[1];
5976                 rx_ring->queue_index = i;
5977                 rx_ring->reg_idx = vsi->base_queue + i;
5978                 rx_ring->ring_active = false;
5979                 rx_ring->vsi = vsi;
5980                 rx_ring->netdev = vsi->netdev;
5981                 rx_ring->dev = &pf->pdev->dev;
5982                 rx_ring->count = vsi->num_desc;
5983                 rx_ring->size = 0;
5984                 rx_ring->dcb_tc = 0;
5985                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
5986                         set_ring_16byte_desc_enabled(rx_ring);
5987                 else
5988                         clear_ring_16byte_desc_enabled(rx_ring);
5989                 vsi->rx_rings[i] = rx_ring;
5990         }
5991
5992         return 0;
5993
5994 err_out:
5995         i40e_vsi_clear_rings(vsi);
5996         return -ENOMEM;
5997 }
5998
5999 /**
6000  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6001  * @pf: board private structure
6002  * @vectors: the number of MSI-X vectors to request
6003  *
6004  * Returns the number of vectors reserved, or error
6005  **/
6006 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6007 {
6008         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6009                                         I40E_MIN_MSIX, vectors);
6010         if (vectors < 0) {
6011                 dev_info(&pf->pdev->dev,
6012                          "MSI-X vector reservation failed: %d\n", vectors);
6013                 vectors = 0;
6014         }
6015
6016         pf->num_msix_entries = vectors;
6017
6018         return vectors;
6019 }
6020
6021 /**
6022  * i40e_init_msix - Setup the MSIX capability
6023  * @pf: board private structure
6024  *
6025  * Work with the OS to set up the MSIX vectors needed.
6026  *
6027  * Returns 0 on success, negative on failure
6028  **/
6029 static int i40e_init_msix(struct i40e_pf *pf)
6030 {
6031         i40e_status err = 0;
6032         struct i40e_hw *hw = &pf->hw;
6033         int v_budget, i;
6034         int vec;
6035
6036         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6037                 return -ENODEV;
6038
6039         /* The number of vectors we'll request will be comprised of:
6040          *   - Add 1 for "other" cause for Admin Queue events, etc.
6041          *   - The number of LAN queue pairs
6042          *      - Queues being used for RSS.
6043          *              We don't need as many as max_rss_size vectors.
6044          *              use rss_size instead in the calculation since that
6045          *              is governed by number of cpus in the system.
6046          *      - assumes symmetric Tx/Rx pairing
6047          *   - The number of VMDq pairs
6048          * Once we count this up, try the request.
6049          *
6050          * If we can't get what we want, we'll simplify to nearly nothing
6051          * and try again.  If that still fails, we punt.
6052          */
6053         pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
6054         pf->num_vmdq_msix = pf->num_vmdq_qps;
6055         v_budget = 1 + pf->num_lan_msix;
6056         v_budget += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6057         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6058                 v_budget++;
6059
6060         /* Scale down if necessary, and the rings will share vectors */
6061         v_budget = min_t(int, v_budget, hw->func_caps.num_msix_vectors);
6062
6063         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6064                                    GFP_KERNEL);
6065         if (!pf->msix_entries)
6066                 return -ENOMEM;
6067
6068         for (i = 0; i < v_budget; i++)
6069                 pf->msix_entries[i].entry = i;
6070         vec = i40e_reserve_msix_vectors(pf, v_budget);
6071         if (vec < I40E_MIN_MSIX) {
6072                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6073                 kfree(pf->msix_entries);
6074                 pf->msix_entries = NULL;
6075                 return -ENODEV;
6076
6077         } else if (vec == I40E_MIN_MSIX) {
6078                 /* Adjust for minimal MSIX use */
6079                 dev_info(&pf->pdev->dev, "Features disabled, not enough MSI-X vectors\n");
6080                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
6081                 pf->num_vmdq_vsis = 0;
6082                 pf->num_vmdq_qps = 0;
6083                 pf->num_vmdq_msix = 0;
6084                 pf->num_lan_qps = 1;
6085                 pf->num_lan_msix = 1;
6086
6087         } else if (vec != v_budget) {
6088                 /* Scale vector usage down */
6089                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
6090                 vec--;                    /* reserve the misc vector */
6091
6092                 /* partition out the remaining vectors */
6093                 switch (vec) {
6094                 case 2:
6095                         pf->num_vmdq_vsis = 1;
6096                         pf->num_lan_msix = 1;
6097                         break;
6098                 case 3:
6099                         pf->num_vmdq_vsis = 1;
6100                         pf->num_lan_msix = 2;
6101                         break;
6102                 default:
6103                         pf->num_lan_msix = min_t(int, (vec / 2),
6104                                                  pf->num_lan_qps);
6105                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
6106                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
6107                         break;
6108                 }
6109         }
6110
6111         return err;
6112 }
6113
6114 /**
6115  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
6116  * @vsi: the VSI being configured
6117  * @v_idx: index of the vector in the vsi struct
6118  *
6119  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
6120  **/
6121 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
6122 {
6123         struct i40e_q_vector *q_vector;
6124
6125         /* allocate q_vector */
6126         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
6127         if (!q_vector)
6128                 return -ENOMEM;
6129
6130         q_vector->vsi = vsi;
6131         q_vector->v_idx = v_idx;
6132         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
6133         if (vsi->netdev)
6134                 netif_napi_add(vsi->netdev, &q_vector->napi,
6135                                i40e_napi_poll, vsi->work_limit);
6136
6137         q_vector->rx.latency_range = I40E_LOW_LATENCY;
6138         q_vector->tx.latency_range = I40E_LOW_LATENCY;
6139
6140         /* tie q_vector and vsi together */
6141         vsi->q_vectors[v_idx] = q_vector;
6142
6143         return 0;
6144 }
6145
6146 /**
6147  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
6148  * @vsi: the VSI being configured
6149  *
6150  * We allocate one q_vector per queue interrupt.  If allocation fails we
6151  * return -ENOMEM.
6152  **/
6153 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
6154 {
6155         struct i40e_pf *pf = vsi->back;
6156         int v_idx, num_q_vectors;
6157         int err;
6158
6159         /* if not MSIX, give the one vector only to the LAN VSI */
6160         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6161                 num_q_vectors = vsi->num_q_vectors;
6162         else if (vsi == pf->vsi[pf->lan_vsi])
6163                 num_q_vectors = 1;
6164         else
6165                 return -EINVAL;
6166
6167         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
6168                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
6169                 if (err)
6170                         goto err_out;
6171         }
6172
6173         return 0;
6174
6175 err_out:
6176         while (v_idx--)
6177                 i40e_free_q_vector(vsi, v_idx);
6178
6179         return err;
6180 }
6181
6182 /**
6183  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
6184  * @pf: board private structure to initialize
6185  **/
6186 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
6187 {
6188         int err = 0;
6189
6190         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
6191                 err = i40e_init_msix(pf);
6192                 if (err) {
6193                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
6194                                        I40E_FLAG_RSS_ENABLED    |
6195                                        I40E_FLAG_DCB_ENABLED    |
6196                                        I40E_FLAG_SRIOV_ENABLED  |
6197                                        I40E_FLAG_FD_SB_ENABLED  |
6198                                        I40E_FLAG_FD_ATR_ENABLED |
6199                                        I40E_FLAG_VMDQ_ENABLED);
6200
6201                         /* rework the queue expectations without MSIX */
6202                         i40e_determine_queue_usage(pf);
6203                 }
6204         }
6205
6206         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
6207             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
6208                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
6209                 err = pci_enable_msi(pf->pdev);
6210                 if (err) {
6211                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
6212                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
6213                 }
6214         }
6215
6216         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
6217                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
6218
6219         /* track first vector for misc interrupts */
6220         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
6221 }
6222
6223 /**
6224  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
6225  * @pf: board private structure
6226  *
6227  * This sets up the handler for MSIX 0, which is used to manage the
6228  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
6229  * when in MSI or Legacy interrupt mode.
6230  **/
6231 static int i40e_setup_misc_vector(struct i40e_pf *pf)
6232 {
6233         struct i40e_hw *hw = &pf->hw;
6234         int err = 0;
6235
6236         /* Only request the irq if this is the first time through, and
6237          * not when we're rebuilding after a Reset
6238          */
6239         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6240                 err = request_irq(pf->msix_entries[0].vector,
6241                                   i40e_intr, 0, pf->misc_int_name, pf);
6242                 if (err) {
6243                         dev_info(&pf->pdev->dev,
6244                                  "request_irq for %s failed: %d\n",
6245                                  pf->misc_int_name, err);
6246                         return -EFAULT;
6247                 }
6248         }
6249
6250         i40e_enable_misc_int_causes(hw);
6251
6252         /* associate no queues to the misc vector */
6253         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
6254         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
6255
6256         i40e_flush(hw);
6257
6258         i40e_irq_dynamic_enable_icr0(pf);
6259
6260         return err;
6261 }
6262
6263 /**
6264  * i40e_config_rss - Prepare for RSS if used
6265  * @pf: board private structure
6266  **/
6267 static int i40e_config_rss(struct i40e_pf *pf)
6268 {
6269         /* Set of random keys generated using kernel random number generator */
6270         static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
6271                                 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
6272                                 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
6273                                 0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
6274         struct i40e_hw *hw = &pf->hw;
6275         u32 lut = 0;
6276         int i, j;
6277         u64 hena;
6278
6279         /* Fill out hash function seed */
6280         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
6281                 wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
6282
6283         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
6284         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
6285                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
6286         hena |= I40E_DEFAULT_RSS_HENA;
6287         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
6288         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
6289
6290         /* Populate the LUT with max no. of queues in round robin fashion */
6291         for (i = 0, j = 0; i < pf->hw.func_caps.rss_table_size; i++, j++) {
6292
6293                 /* The assumption is that lan qp count will be the highest
6294                  * qp count for any PF VSI that needs RSS.
6295                  * If multiple VSIs need RSS support, all the qp counts
6296                  * for those VSIs should be a power of 2 for RSS to work.
6297                  * If LAN VSI is the only consumer for RSS then this requirement
6298                  * is not necessary.
6299                  */
6300                 if (j == pf->rss_size)
6301                         j = 0;
6302                 /* lut = 4-byte sliding window of 4 lut entries */
6303                 lut = (lut << 8) | (j &
6304                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
6305                 /* On i = 3, we have 4 entries in lut; write to the register */
6306                 if ((i & 3) == 3)
6307                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
6308         }
6309         i40e_flush(hw);
6310
6311         return 0;
6312 }
6313
6314 /**
6315  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
6316  * @pf: board private structure
6317  * @queue_count: the requested queue count for rss.
6318  *
6319  * returns 0 if rss is not enabled, if enabled returns the final rss queue
6320  * count which may be different from the requested queue count.
6321  **/
6322 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
6323 {
6324         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
6325                 return 0;
6326
6327         queue_count = min_t(int, queue_count, pf->rss_size_max);
6328         queue_count = rounddown_pow_of_two(queue_count);
6329
6330         if (queue_count != pf->rss_size) {
6331                 i40e_prep_for_reset(pf);
6332
6333                 pf->rss_size = queue_count;
6334
6335                 i40e_reset_and_rebuild(pf, true);
6336                 i40e_config_rss(pf);
6337         }
6338         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
6339         return pf->rss_size;
6340 }
6341
6342 /**
6343  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
6344  * @pf: board private structure to initialize
6345  *
6346  * i40e_sw_init initializes the Adapter private data structure.
6347  * Fields are initialized based on PCI device information and
6348  * OS network device settings (MTU size).
6349  **/
6350 static int i40e_sw_init(struct i40e_pf *pf)
6351 {
6352         int err = 0;
6353         int size;
6354
6355         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
6356                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
6357         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
6358         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
6359                 if (I40E_DEBUG_USER & debug)
6360                         pf->hw.debug_mask = debug;
6361                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
6362                                                 I40E_DEFAULT_MSG_ENABLE);
6363         }
6364
6365         /* Set default capability flags */
6366         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
6367                     I40E_FLAG_MSI_ENABLED     |
6368                     I40E_FLAG_MSIX_ENABLED    |
6369                     I40E_FLAG_RX_1BUF_ENABLED;
6370
6371         /* Set default ITR */
6372         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
6373         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
6374
6375         /* Depending on PF configurations, it is possible that the RSS
6376          * maximum might end up larger than the available queues
6377          */
6378         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
6379         pf->rss_size_max = min_t(int, pf->rss_size_max,
6380                                  pf->hw.func_caps.num_tx_qp);
6381         if (pf->hw.func_caps.rss) {
6382                 pf->flags |= I40E_FLAG_RSS_ENABLED;
6383                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
6384                 pf->rss_size = rounddown_pow_of_two(pf->rss_size);
6385         } else {
6386                 pf->rss_size = 1;
6387         }
6388
6389         /* MFP mode enabled */
6390         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
6391                 pf->flags |= I40E_FLAG_MFP_ENABLED;
6392                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
6393         }
6394
6395         /* FW/NVM is not yet fixed in this regard */
6396         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
6397             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
6398                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6399                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
6400                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
6401                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
6402                 } else {
6403                         dev_info(&pf->pdev->dev,
6404                                  "Flow Director Sideband mode Disabled in MFP mode\n");
6405                 }
6406                 pf->fdir_pf_filter_count =
6407                                  pf->hw.func_caps.fd_filters_guaranteed;
6408                 pf->hw.fdir_shared_filter_count =
6409                                  pf->hw.func_caps.fd_filters_best_effort;
6410         }
6411
6412         if (pf->hw.func_caps.vmdq) {
6413                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
6414                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
6415                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
6416         }
6417
6418 #ifdef CONFIG_PCI_IOV
6419         if (pf->hw.func_caps.num_vfs) {
6420                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
6421                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
6422                 pf->num_req_vfs = min_t(int,
6423                                         pf->hw.func_caps.num_vfs,
6424                                         I40E_MAX_VF_COUNT);
6425         }
6426 #endif /* CONFIG_PCI_IOV */
6427         pf->eeprom_version = 0xDEAD;
6428         pf->lan_veb = I40E_NO_VEB;
6429         pf->lan_vsi = I40E_NO_VSI;
6430
6431         /* set up queue assignment tracking */
6432         size = sizeof(struct i40e_lump_tracking)
6433                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
6434         pf->qp_pile = kzalloc(size, GFP_KERNEL);
6435         if (!pf->qp_pile) {
6436                 err = -ENOMEM;
6437                 goto sw_init_done;
6438         }
6439         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
6440         pf->qp_pile->search_hint = 0;
6441
6442         /* set up vector assignment tracking */
6443         size = sizeof(struct i40e_lump_tracking)
6444                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
6445         pf->irq_pile = kzalloc(size, GFP_KERNEL);
6446         if (!pf->irq_pile) {
6447                 kfree(pf->qp_pile);
6448                 err = -ENOMEM;
6449                 goto sw_init_done;
6450         }
6451         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
6452         pf->irq_pile->search_hint = 0;
6453
6454         mutex_init(&pf->switch_mutex);
6455
6456 sw_init_done:
6457         return err;
6458 }
6459
6460 /**
6461  * i40e_set_ntuple - set the ntuple feature flag and take action
6462  * @pf: board private structure to initialize
6463  * @features: the feature set that the stack is suggesting
6464  *
6465  * returns a bool to indicate if reset needs to happen
6466  **/
6467 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
6468 {
6469         bool need_reset = false;
6470
6471         /* Check if Flow Director n-tuple support was enabled or disabled.  If
6472          * the state changed, we need to reset.
6473          */
6474         if (features & NETIF_F_NTUPLE) {
6475                 /* Enable filters and mark for reset */
6476                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6477                         need_reset = true;
6478                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
6479         } else {
6480                 /* turn off filters, mark for reset and clear SW filter list */
6481                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
6482                         need_reset = true;
6483                         i40e_fdir_filter_exit(pf);
6484                 }
6485                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6486                 /* if ATR was disabled it can be re-enabled. */
6487                 if (!(pf->flags & I40E_FLAG_FD_ATR_ENABLED))
6488                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6489         }
6490         return need_reset;
6491 }
6492
6493 /**
6494  * i40e_set_features - set the netdev feature flags
6495  * @netdev: ptr to the netdev being adjusted
6496  * @features: the feature set that the stack is suggesting
6497  **/
6498 static int i40e_set_features(struct net_device *netdev,
6499                              netdev_features_t features)
6500 {
6501         struct i40e_netdev_priv *np = netdev_priv(netdev);
6502         struct i40e_vsi *vsi = np->vsi;
6503         struct i40e_pf *pf = vsi->back;
6504         bool need_reset;
6505
6506         if (features & NETIF_F_HW_VLAN_CTAG_RX)
6507                 i40e_vlan_stripping_enable(vsi);
6508         else
6509                 i40e_vlan_stripping_disable(vsi);
6510
6511         need_reset = i40e_set_ntuple(pf, features);
6512
6513         if (need_reset)
6514                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
6515
6516         return 0;
6517 }
6518
6519 #ifdef CONFIG_I40E_VXLAN
6520 /**
6521  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
6522  * @pf: board private structure
6523  * @port: The UDP port to look up
6524  *
6525  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
6526  **/
6527 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
6528 {
6529         u8 i;
6530
6531         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6532                 if (pf->vxlan_ports[i] == port)
6533                         return i;
6534         }
6535
6536         return i;
6537 }
6538
6539 /**
6540  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
6541  * @netdev: This physical port's netdev
6542  * @sa_family: Socket Family that VXLAN is notifying us about
6543  * @port: New UDP port number that VXLAN started listening to
6544  **/
6545 static void i40e_add_vxlan_port(struct net_device *netdev,
6546                                 sa_family_t sa_family, __be16 port)
6547 {
6548         struct i40e_netdev_priv *np = netdev_priv(netdev);
6549         struct i40e_vsi *vsi = np->vsi;
6550         struct i40e_pf *pf = vsi->back;
6551         u8 next_idx;
6552         u8 idx;
6553
6554         if (sa_family == AF_INET6)
6555                 return;
6556
6557         idx = i40e_get_vxlan_port_idx(pf, port);
6558
6559         /* Check if port already exists */
6560         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6561                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
6562                 return;
6563         }
6564
6565         /* Now check if there is space to add the new port */
6566         next_idx = i40e_get_vxlan_port_idx(pf, 0);
6567
6568         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6569                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
6570                             ntohs(port));
6571                 return;
6572         }
6573
6574         /* New port: add it and mark its index in the bitmap */
6575         pf->vxlan_ports[next_idx] = port;
6576         pf->pending_vxlan_bitmap |= (1 << next_idx);
6577
6578         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6579 }
6580
6581 /**
6582  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
6583  * @netdev: This physical port's netdev
6584  * @sa_family: Socket Family that VXLAN is notifying us about
6585  * @port: UDP port number that VXLAN stopped listening to
6586  **/
6587 static void i40e_del_vxlan_port(struct net_device *netdev,
6588                                 sa_family_t sa_family, __be16 port)
6589 {
6590         struct i40e_netdev_priv *np = netdev_priv(netdev);
6591         struct i40e_vsi *vsi = np->vsi;
6592         struct i40e_pf *pf = vsi->back;
6593         u8 idx;
6594
6595         if (sa_family == AF_INET6)
6596                 return;
6597
6598         idx = i40e_get_vxlan_port_idx(pf, port);
6599
6600         /* Check if port already exists */
6601         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6602                 /* if port exists, set it to 0 (mark for deletion)
6603                  * and make it pending
6604                  */
6605                 pf->vxlan_ports[idx] = 0;
6606
6607                 pf->pending_vxlan_bitmap |= (1 << idx);
6608
6609                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6610         } else {
6611                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
6612                             ntohs(port));
6613         }
6614 }
6615
6616 #endif
6617 #ifdef HAVE_FDB_OPS
6618 #ifdef USE_CONST_DEV_UC_CHAR
6619 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
6620                             struct net_device *dev,
6621                             const unsigned char *addr,
6622                             u16 flags)
6623 #else
6624 static int i40e_ndo_fdb_add(struct ndmsg *ndm,
6625                             struct net_device *dev,
6626                             unsigned char *addr,
6627                             u16 flags)
6628 #endif
6629 {
6630         struct i40e_netdev_priv *np = netdev_priv(dev);
6631         struct i40e_pf *pf = np->vsi->back;
6632         int err = 0;
6633
6634         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
6635                 return -EOPNOTSUPP;
6636
6637         /* Hardware does not support aging addresses so if a
6638          * ndm_state is given only allow permanent addresses
6639          */
6640         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
6641                 netdev_info(dev, "FDB only supports static addresses\n");
6642                 return -EINVAL;
6643         }
6644
6645         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
6646                 err = dev_uc_add_excl(dev, addr);
6647         else if (is_multicast_ether_addr(addr))
6648                 err = dev_mc_add_excl(dev, addr);
6649         else
6650                 err = -EINVAL;
6651
6652         /* Only return duplicate errors if NLM_F_EXCL is set */
6653         if (err == -EEXIST && !(flags & NLM_F_EXCL))
6654                 err = 0;
6655
6656         return err;
6657 }
6658
6659 #ifndef USE_DEFAULT_FDB_DEL_DUMP
6660 #ifdef USE_CONST_DEV_UC_CHAR
6661 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
6662                             struct net_device *dev,
6663                             const unsigned char *addr)
6664 #else
6665 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
6666                             struct net_device *dev,
6667                             unsigned char *addr)
6668 #endif
6669 {
6670         struct i40e_netdev_priv *np = netdev_priv(dev);
6671         struct i40e_pf *pf = np->vsi->back;
6672         int err = -EOPNOTSUPP;
6673
6674         if (ndm->ndm_state & NUD_PERMANENT) {
6675                 netdev_info(dev, "FDB only supports static addresses\n");
6676                 return -EINVAL;
6677         }
6678
6679         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
6680                 if (is_unicast_ether_addr(addr))
6681                         err = dev_uc_del(dev, addr);
6682                 else if (is_multicast_ether_addr(addr))
6683                         err = dev_mc_del(dev, addr);
6684                 else
6685                         err = -EINVAL;
6686         }
6687
6688         return err;
6689 }
6690
6691 static int i40e_ndo_fdb_dump(struct sk_buff *skb,
6692                              struct netlink_callback *cb,
6693                              struct net_device *dev,
6694                              int idx)
6695 {
6696         struct i40e_netdev_priv *np = netdev_priv(dev);
6697         struct i40e_pf *pf = np->vsi->back;
6698
6699         if (pf->flags & I40E_FLAG_SRIOV_ENABLED)
6700                 idx = ndo_dflt_fdb_dump(skb, cb, dev, idx);
6701
6702         return idx;
6703 }
6704
6705 #endif /* USE_DEFAULT_FDB_DEL_DUMP */
6706 #endif /* HAVE_FDB_OPS */
6707 static const struct net_device_ops i40e_netdev_ops = {
6708         .ndo_open               = i40e_open,
6709         .ndo_stop               = i40e_close,
6710         .ndo_start_xmit         = i40e_lan_xmit_frame,
6711         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
6712         .ndo_set_rx_mode        = i40e_set_rx_mode,
6713         .ndo_validate_addr      = eth_validate_addr,
6714         .ndo_set_mac_address    = i40e_set_mac,
6715         .ndo_change_mtu         = i40e_change_mtu,
6716         .ndo_do_ioctl           = i40e_ioctl,
6717         .ndo_tx_timeout         = i40e_tx_timeout,
6718         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
6719         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
6720 #ifdef CONFIG_NET_POLL_CONTROLLER
6721         .ndo_poll_controller    = i40e_netpoll,
6722 #endif
6723         .ndo_setup_tc           = i40e_setup_tc,
6724         .ndo_set_features       = i40e_set_features,
6725         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
6726         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
6727         .ndo_set_vf_tx_rate     = i40e_ndo_set_vf_bw,
6728         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
6729         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
6730 #ifdef CONFIG_I40E_VXLAN
6731         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
6732         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
6733 #endif
6734 #ifdef HAVE_FDB_OPS
6735         .ndo_fdb_add            = i40e_ndo_fdb_add,
6736 #ifndef USE_DEFAULT_FDB_DEL_DUMP
6737         .ndo_fdb_del            = i40e_ndo_fdb_del,
6738         .ndo_fdb_dump           = i40e_ndo_fdb_dump,
6739 #endif
6740 #endif
6741 };
6742
6743 /**
6744  * i40e_config_netdev - Setup the netdev flags
6745  * @vsi: the VSI being configured
6746  *
6747  * Returns 0 on success, negative value on failure
6748  **/
6749 static int i40e_config_netdev(struct i40e_vsi *vsi)
6750 {
6751         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
6752         struct i40e_pf *pf = vsi->back;
6753         struct i40e_hw *hw = &pf->hw;
6754         struct i40e_netdev_priv *np;
6755         struct net_device *netdev;
6756         u8 mac_addr[ETH_ALEN];
6757         int etherdev_size;
6758
6759         etherdev_size = sizeof(struct i40e_netdev_priv);
6760         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
6761         if (!netdev)
6762                 return -ENOMEM;
6763
6764         vsi->netdev = netdev;
6765         np = netdev_priv(netdev);
6766         np->vsi = vsi;
6767
6768         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
6769                                   NETIF_F_GSO_UDP_TUNNEL |
6770                                   NETIF_F_TSO;
6771
6772         netdev->features = NETIF_F_SG                  |
6773                            NETIF_F_IP_CSUM             |
6774                            NETIF_F_SCTP_CSUM           |
6775                            NETIF_F_HIGHDMA             |
6776                            NETIF_F_GSO_UDP_TUNNEL      |
6777                            NETIF_F_HW_VLAN_CTAG_TX     |
6778                            NETIF_F_HW_VLAN_CTAG_RX     |
6779                            NETIF_F_HW_VLAN_CTAG_FILTER |
6780                            NETIF_F_IPV6_CSUM           |
6781                            NETIF_F_TSO                 |
6782                            NETIF_F_TSO_ECN             |
6783                            NETIF_F_TSO6                |
6784                            NETIF_F_RXCSUM              |
6785                            NETIF_F_RXHASH              |
6786                            0;
6787
6788         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
6789                 netdev->features |= NETIF_F_NTUPLE;
6790
6791         /* copy netdev features into list of user selectable features */
6792         netdev->hw_features |= netdev->features;
6793
6794         if (vsi->type == I40E_VSI_MAIN) {
6795                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
6796                 memcpy(mac_addr, hw->mac.perm_addr, ETH_ALEN);
6797         } else {
6798                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
6799                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
6800                          pf->vsi[pf->lan_vsi]->netdev->name);
6801                 random_ether_addr(mac_addr);
6802                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
6803         }
6804         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
6805
6806         memcpy(netdev->dev_addr, mac_addr, ETH_ALEN);
6807         memcpy(netdev->perm_addr, mac_addr, ETH_ALEN);
6808         /* vlan gets same features (except vlan offload)
6809          * after any tweaks for specific VSI types
6810          */
6811         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
6812                                                      NETIF_F_HW_VLAN_CTAG_RX |
6813                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
6814         netdev->priv_flags |= IFF_UNICAST_FLT;
6815         netdev->priv_flags |= IFF_SUPP_NOFCS;
6816         /* Setup netdev TC information */
6817         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
6818
6819         netdev->netdev_ops = &i40e_netdev_ops;
6820         netdev->watchdog_timeo = 5 * HZ;
6821         i40e_set_ethtool_ops(netdev);
6822
6823         return 0;
6824 }
6825
6826 /**
6827  * i40e_vsi_delete - Delete a VSI from the switch
6828  * @vsi: the VSI being removed
6829  *
6830  * Returns 0 on success, negative value on failure
6831  **/
6832 static void i40e_vsi_delete(struct i40e_vsi *vsi)
6833 {
6834         /* remove default VSI is not allowed */
6835         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
6836                 return;
6837
6838         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
6839         return;
6840 }
6841
6842 /**
6843  * i40e_add_vsi - Add a VSI to the switch
6844  * @vsi: the VSI being configured
6845  *
6846  * This initializes a VSI context depending on the VSI type to be added and
6847  * passes it down to the add_vsi aq command.
6848  **/
6849 static int i40e_add_vsi(struct i40e_vsi *vsi)
6850 {
6851         int ret = -ENODEV;
6852         struct i40e_mac_filter *f, *ftmp;
6853         struct i40e_pf *pf = vsi->back;
6854         struct i40e_hw *hw = &pf->hw;
6855         struct i40e_vsi_context ctxt;
6856         u8 enabled_tc = 0x1; /* TC0 enabled */
6857         int f_count = 0;
6858
6859         memset(&ctxt, 0, sizeof(ctxt));
6860         switch (vsi->type) {
6861         case I40E_VSI_MAIN:
6862                 /* The PF's main VSI is already setup as part of the
6863                  * device initialization, so we'll not bother with
6864                  * the add_vsi call, but we will retrieve the current
6865                  * VSI context.
6866                  */
6867                 ctxt.seid = pf->main_vsi_seid;
6868                 ctxt.pf_num = pf->hw.pf_id;
6869                 ctxt.vf_num = 0;
6870                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6871                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6872                 if (ret) {
6873                         dev_info(&pf->pdev->dev,
6874                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
6875                                  ret, pf->hw.aq.asq_last_status);
6876                         return -ENOENT;
6877                 }
6878                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
6879                 vsi->info.valid_sections = 0;
6880
6881                 vsi->seid = ctxt.seid;
6882                 vsi->id = ctxt.vsi_number;
6883
6884                 enabled_tc = i40e_pf_get_tc_map(pf);
6885
6886                 /* MFP mode setup queue map and update VSI */
6887                 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
6888                         memset(&ctxt, 0, sizeof(ctxt));
6889                         ctxt.seid = pf->main_vsi_seid;
6890                         ctxt.pf_num = pf->hw.pf_id;
6891                         ctxt.vf_num = 0;
6892                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
6893                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
6894                         if (ret) {
6895                                 dev_info(&pf->pdev->dev,
6896                                          "update vsi failed, aq_err=%d\n",
6897                                          pf->hw.aq.asq_last_status);
6898                                 ret = -ENOENT;
6899                                 goto err;
6900                         }
6901                         /* update the local VSI info queue map */
6902                         i40e_vsi_update_queue_map(vsi, &ctxt);
6903                         vsi->info.valid_sections = 0;
6904                 } else {
6905                         /* Default/Main VSI is only enabled for TC0
6906                          * reconfigure it to enable all TCs that are
6907                          * available on the port in SFP mode.
6908                          */
6909                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
6910                         if (ret) {
6911                                 dev_info(&pf->pdev->dev,
6912                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
6913                                          enabled_tc, ret,
6914                                          pf->hw.aq.asq_last_status);
6915                                 ret = -ENOENT;
6916                         }
6917                 }
6918                 break;
6919
6920         case I40E_VSI_FDIR:
6921                 ctxt.pf_num = hw->pf_id;
6922                 ctxt.vf_num = 0;
6923                 ctxt.uplink_seid = vsi->uplink_seid;
6924                 ctxt.connection_type = 0x1;     /* regular data port */
6925                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6926                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6927                 break;
6928
6929         case I40E_VSI_VMDQ2:
6930                 ctxt.pf_num = hw->pf_id;
6931                 ctxt.vf_num = 0;
6932                 ctxt.uplink_seid = vsi->uplink_seid;
6933                 ctxt.connection_type = 0x1;     /* regular data port */
6934                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
6935
6936                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6937
6938                 /* This VSI is connected to VEB so the switch_id
6939                  * should be set to zero by default.
6940                  */
6941                 ctxt.info.switch_id = 0;
6942                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
6943                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6944
6945                 /* Setup the VSI tx/rx queue map for TC0 only for now */
6946                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6947                 break;
6948
6949         case I40E_VSI_SRIOV:
6950                 ctxt.pf_num = hw->pf_id;
6951                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
6952                 ctxt.uplink_seid = vsi->uplink_seid;
6953                 ctxt.connection_type = 0x1;     /* regular data port */
6954                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
6955
6956                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6957
6958                 /* This VSI is connected to VEB so the switch_id
6959                  * should be set to zero by default.
6960                  */
6961                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6962
6963                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
6964                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
6965                 /* Setup the VSI tx/rx queue map for TC0 only for now */
6966                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6967                 break;
6968
6969         default:
6970                 return -ENODEV;
6971         }
6972
6973         if (vsi->type != I40E_VSI_MAIN) {
6974                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
6975                 if (ret) {
6976                         dev_info(&vsi->back->pdev->dev,
6977                                  "add vsi failed, aq_err=%d\n",
6978                                  vsi->back->hw.aq.asq_last_status);
6979                         ret = -ENOENT;
6980                         goto err;
6981                 }
6982                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
6983                 vsi->info.valid_sections = 0;
6984                 vsi->seid = ctxt.seid;
6985                 vsi->id = ctxt.vsi_number;
6986         }
6987
6988         /* If macvlan filters already exist, force them to get loaded */
6989         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
6990                 f->changed = true;
6991                 f_count++;
6992         }
6993         if (f_count) {
6994                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
6995                 pf->flags |= I40E_FLAG_FILTER_SYNC;
6996         }
6997
6998         /* Update VSI BW information */
6999         ret = i40e_vsi_get_bw_info(vsi);
7000         if (ret) {
7001                 dev_info(&pf->pdev->dev,
7002                          "couldn't get vsi bw info, err %d, aq_err %d\n",
7003                          ret, pf->hw.aq.asq_last_status);
7004                 /* VSI is already added so not tearing that up */
7005                 ret = 0;
7006         }
7007
7008 err:
7009         return ret;
7010 }
7011
7012 /**
7013  * i40e_vsi_release - Delete a VSI and free its resources
7014  * @vsi: the VSI being removed
7015  *
7016  * Returns 0 on success or < 0 on error
7017  **/
7018 int i40e_vsi_release(struct i40e_vsi *vsi)
7019 {
7020         struct i40e_mac_filter *f, *ftmp;
7021         struct i40e_veb *veb = NULL;
7022         struct i40e_pf *pf;
7023         u16 uplink_seid;
7024         int i, n;
7025
7026         pf = vsi->back;
7027
7028         /* release of a VEB-owner or last VSI is not allowed */
7029         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
7030                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
7031                          vsi->seid, vsi->uplink_seid);
7032                 return -ENODEV;
7033         }
7034         if (vsi == pf->vsi[pf->lan_vsi] &&
7035             !test_bit(__I40E_DOWN, &pf->state)) {
7036                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
7037                 return -ENODEV;
7038         }
7039
7040         uplink_seid = vsi->uplink_seid;
7041         if (vsi->type != I40E_VSI_SRIOV) {
7042                 if (vsi->netdev_registered) {
7043                         vsi->netdev_registered = false;
7044                         if (vsi->netdev) {
7045                                 /* results in a call to i40e_close() */
7046                                 unregister_netdev(vsi->netdev);
7047                         }
7048                 } else {
7049                         i40e_vsi_close(vsi);
7050                 }
7051                 i40e_vsi_disable_irq(vsi);
7052         }
7053
7054         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
7055                 i40e_del_filter(vsi, f->macaddr, f->vlan,
7056                                 f->is_vf, f->is_netdev);
7057         i40e_sync_vsi_filters(vsi);
7058
7059         i40e_vsi_delete(vsi);
7060         i40e_vsi_free_q_vectors(vsi);
7061         if (vsi->netdev) {
7062                 free_netdev(vsi->netdev);
7063                 vsi->netdev = NULL;
7064         }
7065         i40e_vsi_clear_rings(vsi);
7066         i40e_vsi_clear(vsi);
7067
7068         /* If this was the last thing on the VEB, except for the
7069          * controlling VSI, remove the VEB, which puts the controlling
7070          * VSI onto the next level down in the switch.
7071          *
7072          * Well, okay, there's one more exception here: don't remove
7073          * the orphan VEBs yet.  We'll wait for an explicit remove request
7074          * from up the network stack.
7075          */
7076         for (n = 0, i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7077                 if (pf->vsi[i] &&
7078                     pf->vsi[i]->uplink_seid == uplink_seid &&
7079                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7080                         n++;      /* count the VSIs */
7081                 }
7082         }
7083         for (i = 0; i < I40E_MAX_VEB; i++) {
7084                 if (!pf->veb[i])
7085                         continue;
7086                 if (pf->veb[i]->uplink_seid == uplink_seid)
7087                         n++;     /* count the VEBs */
7088                 if (pf->veb[i]->seid == uplink_seid)
7089                         veb = pf->veb[i];
7090         }
7091         if (n == 0 && veb && veb->uplink_seid != 0)
7092                 i40e_veb_release(veb);
7093
7094         return 0;
7095 }
7096
7097 /**
7098  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
7099  * @vsi: ptr to the VSI
7100  *
7101  * This should only be called after i40e_vsi_mem_alloc() which allocates the
7102  * corresponding SW VSI structure and initializes num_queue_pairs for the
7103  * newly allocated VSI.
7104  *
7105  * Returns 0 on success or negative on failure
7106  **/
7107 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
7108 {
7109         int ret = -ENOENT;
7110         struct i40e_pf *pf = vsi->back;
7111
7112         if (vsi->q_vectors[0]) {
7113                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
7114                          vsi->seid);
7115                 return -EEXIST;
7116         }
7117
7118         if (vsi->base_vector) {
7119                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
7120                          vsi->seid, vsi->base_vector);
7121                 return -EEXIST;
7122         }
7123
7124         ret = i40e_vsi_alloc_q_vectors(vsi);
7125         if (ret) {
7126                 dev_info(&pf->pdev->dev,
7127                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
7128                          vsi->num_q_vectors, vsi->seid, ret);
7129                 vsi->num_q_vectors = 0;
7130                 goto vector_setup_out;
7131         }
7132
7133         if (vsi->num_q_vectors)
7134                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
7135                                                  vsi->num_q_vectors, vsi->idx);
7136         if (vsi->base_vector < 0) {
7137                 dev_info(&pf->pdev->dev,
7138                          "failed to get queue tracking for VSI %d, err=%d\n",
7139                          vsi->seid, vsi->base_vector);
7140                 i40e_vsi_free_q_vectors(vsi);
7141                 ret = -ENOENT;
7142                 goto vector_setup_out;
7143         }
7144
7145 vector_setup_out:
7146         return ret;
7147 }
7148
7149 /**
7150  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
7151  * @vsi: pointer to the vsi.
7152  *
7153  * This re-allocates a vsi's queue resources.
7154  *
7155  * Returns pointer to the successfully allocated and configured VSI sw struct
7156  * on success, otherwise returns NULL on failure.
7157  **/
7158 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
7159 {
7160         struct i40e_pf *pf = vsi->back;
7161         u8 enabled_tc;
7162         int ret;
7163
7164         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7165         i40e_vsi_clear_rings(vsi);
7166
7167         i40e_vsi_free_arrays(vsi, false);
7168         i40e_set_num_rings_in_vsi(vsi);
7169         ret = i40e_vsi_alloc_arrays(vsi, false);
7170         if (ret)
7171                 goto err_vsi;
7172
7173         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
7174         if (ret < 0) {
7175                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7176                          vsi->seid, ret);
7177                 goto err_vsi;
7178         }
7179         vsi->base_queue = ret;
7180
7181         /* Update the FW view of the VSI. Force a reset of TC and queue
7182          * layout configurations.
7183          */
7184         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
7185         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
7186         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
7187         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
7188
7189         /* assign it some queues */
7190         ret = i40e_alloc_rings(vsi);
7191         if (ret)
7192                 goto err_rings;
7193
7194         /* map all of the rings to the q_vectors */
7195         i40e_vsi_map_rings_to_vectors(vsi);
7196         return vsi;
7197
7198 err_rings:
7199         i40e_vsi_free_q_vectors(vsi);
7200         if (vsi->netdev_registered) {
7201                 vsi->netdev_registered = false;
7202                 unregister_netdev(vsi->netdev);
7203                 free_netdev(vsi->netdev);
7204                 vsi->netdev = NULL;
7205         }
7206         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
7207 err_vsi:
7208         i40e_vsi_clear(vsi);
7209         return NULL;
7210 }
7211
7212 /**
7213  * i40e_vsi_setup - Set up a VSI by a given type
7214  * @pf: board private structure
7215  * @type: VSI type
7216  * @uplink_seid: the switch element to link to
7217  * @param1: usage depends upon VSI type. For VF types, indicates VF id
7218  *
7219  * This allocates the sw VSI structure and its queue resources, then add a VSI
7220  * to the identified VEB.
7221  *
7222  * Returns pointer to the successfully allocated and configure VSI sw struct on
7223  * success, otherwise returns NULL on failure.
7224  **/
7225 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
7226                                 u16 uplink_seid, u32 param1)
7227 {
7228         struct i40e_vsi *vsi = NULL;
7229         struct i40e_veb *veb = NULL;
7230         int ret, i;
7231         int v_idx;
7232
7233         /* The requested uplink_seid must be either
7234          *     - the PF's port seid
7235          *              no VEB is needed because this is the PF
7236          *              or this is a Flow Director special case VSI
7237          *     - seid of an existing VEB
7238          *     - seid of a VSI that owns an existing VEB
7239          *     - seid of a VSI that doesn't own a VEB
7240          *              a new VEB is created and the VSI becomes the owner
7241          *     - seid of the PF VSI, which is what creates the first VEB
7242          *              this is a special case of the previous
7243          *
7244          * Find which uplink_seid we were given and create a new VEB if needed
7245          */
7246         for (i = 0; i < I40E_MAX_VEB; i++) {
7247                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
7248                         veb = pf->veb[i];
7249                         break;
7250                 }
7251         }
7252
7253         if (!veb && uplink_seid != pf->mac_seid) {
7254
7255                 for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7256                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
7257                                 vsi = pf->vsi[i];
7258                                 break;
7259                         }
7260                 }
7261                 if (!vsi) {
7262                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
7263                                  uplink_seid);
7264                         return NULL;
7265                 }
7266
7267                 if (vsi->uplink_seid == pf->mac_seid)
7268                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
7269                                              vsi->tc_config.enabled_tc);
7270                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
7271                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
7272                                              vsi->tc_config.enabled_tc);
7273
7274                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7275                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7276                                 veb = pf->veb[i];
7277                 }
7278                 if (!veb) {
7279                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
7280                         return NULL;
7281                 }
7282
7283                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
7284                 uplink_seid = veb->seid;
7285         }
7286
7287         /* get vsi sw struct */
7288         v_idx = i40e_vsi_mem_alloc(pf, type);
7289         if (v_idx < 0)
7290                 goto err_alloc;
7291         vsi = pf->vsi[v_idx];
7292         if (!vsi)
7293                 goto err_alloc;
7294         vsi->type = type;
7295         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
7296
7297         if (type == I40E_VSI_MAIN)
7298                 pf->lan_vsi = v_idx;
7299         else if (type == I40E_VSI_SRIOV)
7300                 vsi->vf_id = param1;
7301         /* assign it some queues */
7302         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
7303                                 vsi->idx);
7304         if (ret < 0) {
7305                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7306                          vsi->seid, ret);
7307                 goto err_vsi;
7308         }
7309         vsi->base_queue = ret;
7310
7311         /* get a VSI from the hardware */
7312         vsi->uplink_seid = uplink_seid;
7313         ret = i40e_add_vsi(vsi);
7314         if (ret)
7315                 goto err_vsi;
7316
7317         switch (vsi->type) {
7318         /* setup the netdev if needed */
7319         case I40E_VSI_MAIN:
7320         case I40E_VSI_VMDQ2:
7321                 ret = i40e_config_netdev(vsi);
7322                 if (ret)
7323                         goto err_netdev;
7324                 ret = register_netdev(vsi->netdev);
7325                 if (ret)
7326                         goto err_netdev;
7327                 vsi->netdev_registered = true;
7328                 netif_carrier_off(vsi->netdev);
7329 #ifdef CONFIG_I40E_DCB
7330                 /* Setup DCB netlink interface */
7331                 i40e_dcbnl_setup(vsi);
7332 #endif /* CONFIG_I40E_DCB */
7333                 /* fall through */
7334
7335         case I40E_VSI_FDIR:
7336                 /* set up vectors and rings if needed */
7337                 ret = i40e_vsi_setup_vectors(vsi);
7338                 if (ret)
7339                         goto err_msix;
7340
7341                 ret = i40e_alloc_rings(vsi);
7342                 if (ret)
7343                         goto err_rings;
7344
7345                 /* map all of the rings to the q_vectors */
7346                 i40e_vsi_map_rings_to_vectors(vsi);
7347
7348                 i40e_vsi_reset_stats(vsi);
7349                 break;
7350
7351         default:
7352                 /* no netdev or rings for the other VSI types */
7353                 break;
7354         }
7355
7356         return vsi;
7357
7358 err_rings:
7359         i40e_vsi_free_q_vectors(vsi);
7360 err_msix:
7361         if (vsi->netdev_registered) {
7362                 vsi->netdev_registered = false;
7363                 unregister_netdev(vsi->netdev);
7364                 free_netdev(vsi->netdev);
7365                 vsi->netdev = NULL;
7366         }
7367 err_netdev:
7368         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
7369 err_vsi:
7370         i40e_vsi_clear(vsi);
7371 err_alloc:
7372         return NULL;
7373 }
7374
7375 /**
7376  * i40e_veb_get_bw_info - Query VEB BW information
7377  * @veb: the veb to query
7378  *
7379  * Query the Tx scheduler BW configuration data for given VEB
7380  **/
7381 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
7382 {
7383         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
7384         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
7385         struct i40e_pf *pf = veb->pf;
7386         struct i40e_hw *hw = &pf->hw;
7387         u32 tc_bw_max;
7388         int ret = 0;
7389         int i;
7390
7391         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
7392                                                   &bw_data, NULL);
7393         if (ret) {
7394                 dev_info(&pf->pdev->dev,
7395                          "query veb bw config failed, aq_err=%d\n",
7396                          hw->aq.asq_last_status);
7397                 goto out;
7398         }
7399
7400         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
7401                                                    &ets_data, NULL);
7402         if (ret) {
7403                 dev_info(&pf->pdev->dev,
7404                          "query veb bw ets config failed, aq_err=%d\n",
7405                          hw->aq.asq_last_status);
7406                 goto out;
7407         }
7408
7409         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
7410         veb->bw_max_quanta = ets_data.tc_bw_max;
7411         veb->is_abs_credits = bw_data.absolute_credits_enable;
7412         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
7413                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
7414         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
7415                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
7416                 veb->bw_tc_limit_credits[i] =
7417                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
7418                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
7419         }
7420
7421 out:
7422         return ret;
7423 }
7424
7425 /**
7426  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
7427  * @pf: board private structure
7428  *
7429  * On error: returns error code (negative)
7430  * On success: returns vsi index in PF (positive)
7431  **/
7432 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
7433 {
7434         int ret = -ENOENT;
7435         struct i40e_veb *veb;
7436         int i;
7437
7438         /* Need to protect the allocation of switch elements at the PF level */
7439         mutex_lock(&pf->switch_mutex);
7440
7441         /* VEB list may be fragmented if VEB creation/destruction has
7442          * been happening.  We can afford to do a quick scan to look
7443          * for any free slots in the list.
7444          *
7445          * find next empty veb slot, looping back around if necessary
7446          */
7447         i = 0;
7448         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
7449                 i++;
7450         if (i >= I40E_MAX_VEB) {
7451                 ret = -ENOMEM;
7452                 goto err_alloc_veb;  /* out of VEB slots! */
7453         }
7454
7455         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
7456         if (!veb) {
7457                 ret = -ENOMEM;
7458                 goto err_alloc_veb;
7459         }
7460         veb->pf = pf;
7461         veb->idx = i;
7462         veb->enabled_tc = 1;
7463
7464         pf->veb[i] = veb;
7465         ret = i;
7466 err_alloc_veb:
7467         mutex_unlock(&pf->switch_mutex);
7468         return ret;
7469 }
7470
7471 /**
7472  * i40e_switch_branch_release - Delete a branch of the switch tree
7473  * @branch: where to start deleting
7474  *
7475  * This uses recursion to find the tips of the branch to be
7476  * removed, deleting until we get back to and can delete this VEB.
7477  **/
7478 static void i40e_switch_branch_release(struct i40e_veb *branch)
7479 {
7480         struct i40e_pf *pf = branch->pf;
7481         u16 branch_seid = branch->seid;
7482         u16 veb_idx = branch->idx;
7483         int i;
7484
7485         /* release any VEBs on this VEB - RECURSION */
7486         for (i = 0; i < I40E_MAX_VEB; i++) {
7487                 if (!pf->veb[i])
7488                         continue;
7489                 if (pf->veb[i]->uplink_seid == branch->seid)
7490                         i40e_switch_branch_release(pf->veb[i]);
7491         }
7492
7493         /* Release the VSIs on this VEB, but not the owner VSI.
7494          *
7495          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
7496          *       the VEB itself, so don't use (*branch) after this loop.
7497          */
7498         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7499                 if (!pf->vsi[i])
7500                         continue;
7501                 if (pf->vsi[i]->uplink_seid == branch_seid &&
7502                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7503                         i40e_vsi_release(pf->vsi[i]);
7504                 }
7505         }
7506
7507         /* There's one corner case where the VEB might not have been
7508          * removed, so double check it here and remove it if needed.
7509          * This case happens if the veb was created from the debugfs
7510          * commands and no VSIs were added to it.
7511          */
7512         if (pf->veb[veb_idx])
7513                 i40e_veb_release(pf->veb[veb_idx]);
7514 }
7515
7516 /**
7517  * i40e_veb_clear - remove veb struct
7518  * @veb: the veb to remove
7519  **/
7520 static void i40e_veb_clear(struct i40e_veb *veb)
7521 {
7522         if (!veb)
7523                 return;
7524
7525         if (veb->pf) {
7526                 struct i40e_pf *pf = veb->pf;
7527
7528                 mutex_lock(&pf->switch_mutex);
7529                 if (pf->veb[veb->idx] == veb)
7530                         pf->veb[veb->idx] = NULL;
7531                 mutex_unlock(&pf->switch_mutex);
7532         }
7533
7534         kfree(veb);
7535 }
7536
7537 /**
7538  * i40e_veb_release - Delete a VEB and free its resources
7539  * @veb: the VEB being removed
7540  **/
7541 void i40e_veb_release(struct i40e_veb *veb)
7542 {
7543         struct i40e_vsi *vsi = NULL;
7544         struct i40e_pf *pf;
7545         int i, n = 0;
7546
7547         pf = veb->pf;
7548
7549         /* find the remaining VSI and check for extras */
7550         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7551                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
7552                         n++;
7553                         vsi = pf->vsi[i];
7554                 }
7555         }
7556         if (n != 1) {
7557                 dev_info(&pf->pdev->dev,
7558                          "can't remove VEB %d with %d VSIs left\n",
7559                          veb->seid, n);
7560                 return;
7561         }
7562
7563         /* move the remaining VSI to uplink veb */
7564         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
7565         if (veb->uplink_seid) {
7566                 vsi->uplink_seid = veb->uplink_seid;
7567                 if (veb->uplink_seid == pf->mac_seid)
7568                         vsi->veb_idx = I40E_NO_VEB;
7569                 else
7570                         vsi->veb_idx = veb->veb_idx;
7571         } else {
7572                 /* floating VEB */
7573                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
7574                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
7575         }
7576
7577         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
7578         i40e_veb_clear(veb);
7579
7580         return;
7581 }
7582
7583 /**
7584  * i40e_add_veb - create the VEB in the switch
7585  * @veb: the VEB to be instantiated
7586  * @vsi: the controlling VSI
7587  **/
7588 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
7589 {
7590         bool is_default = false;
7591         bool is_cloud = false;
7592         int ret;
7593
7594         /* get a VEB from the hardware */
7595         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
7596                               veb->enabled_tc, is_default,
7597                               is_cloud, &veb->seid, NULL);
7598         if (ret) {
7599                 dev_info(&veb->pf->pdev->dev,
7600                          "couldn't add VEB, err %d, aq_err %d\n",
7601                          ret, veb->pf->hw.aq.asq_last_status);
7602                 return -EPERM;
7603         }
7604
7605         /* get statistics counter */
7606         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
7607                                          &veb->stats_idx, NULL, NULL, NULL);
7608         if (ret) {
7609                 dev_info(&veb->pf->pdev->dev,
7610                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
7611                          ret, veb->pf->hw.aq.asq_last_status);
7612                 return -EPERM;
7613         }
7614         ret = i40e_veb_get_bw_info(veb);
7615         if (ret) {
7616                 dev_info(&veb->pf->pdev->dev,
7617                          "couldn't get VEB bw info, err %d, aq_err %d\n",
7618                          ret, veb->pf->hw.aq.asq_last_status);
7619                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
7620                 return -ENOENT;
7621         }
7622
7623         vsi->uplink_seid = veb->seid;
7624         vsi->veb_idx = veb->idx;
7625         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
7626
7627         return 0;
7628 }
7629
7630 /**
7631  * i40e_veb_setup - Set up a VEB
7632  * @pf: board private structure
7633  * @flags: VEB setup flags
7634  * @uplink_seid: the switch element to link to
7635  * @vsi_seid: the initial VSI seid
7636  * @enabled_tc: Enabled TC bit-map
7637  *
7638  * This allocates the sw VEB structure and links it into the switch
7639  * It is possible and legal for this to be a duplicate of an already
7640  * existing VEB.  It is also possible for both uplink and vsi seids
7641  * to be zero, in order to create a floating VEB.
7642  *
7643  * Returns pointer to the successfully allocated VEB sw struct on
7644  * success, otherwise returns NULL on failure.
7645  **/
7646 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
7647                                 u16 uplink_seid, u16 vsi_seid,
7648                                 u8 enabled_tc)
7649 {
7650         struct i40e_veb *veb, *uplink_veb = NULL;
7651         int vsi_idx, veb_idx;
7652         int ret;
7653
7654         /* if one seid is 0, the other must be 0 to create a floating relay */
7655         if ((uplink_seid == 0 || vsi_seid == 0) &&
7656             (uplink_seid + vsi_seid != 0)) {
7657                 dev_info(&pf->pdev->dev,
7658                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
7659                          uplink_seid, vsi_seid);
7660                 return NULL;
7661         }
7662
7663         /* make sure there is such a vsi and uplink */
7664         for (vsi_idx = 0; vsi_idx < pf->hw.func_caps.num_vsis; vsi_idx++)
7665                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
7666                         break;
7667         if (vsi_idx >= pf->hw.func_caps.num_vsis && vsi_seid != 0) {
7668                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
7669                          vsi_seid);
7670                 return NULL;
7671         }
7672
7673         if (uplink_seid && uplink_seid != pf->mac_seid) {
7674                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
7675                         if (pf->veb[veb_idx] &&
7676                             pf->veb[veb_idx]->seid == uplink_seid) {
7677                                 uplink_veb = pf->veb[veb_idx];
7678                                 break;
7679                         }
7680                 }
7681                 if (!uplink_veb) {
7682                         dev_info(&pf->pdev->dev,
7683                                  "uplink seid %d not found\n", uplink_seid);
7684                         return NULL;
7685                 }
7686         }
7687
7688         /* get veb sw struct */
7689         veb_idx = i40e_veb_mem_alloc(pf);
7690         if (veb_idx < 0)
7691                 goto err_alloc;
7692         veb = pf->veb[veb_idx];
7693         veb->flags = flags;
7694         veb->uplink_seid = uplink_seid;
7695         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
7696         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
7697
7698         /* create the VEB in the switch */
7699         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
7700         if (ret)
7701                 goto err_veb;
7702
7703         return veb;
7704
7705 err_veb:
7706         i40e_veb_clear(veb);
7707 err_alloc:
7708         return NULL;
7709 }
7710
7711 /**
7712  * i40e_setup_pf_switch_element - set pf vars based on switch type
7713  * @pf: board private structure
7714  * @ele: element we are building info from
7715  * @num_reported: total number of elements
7716  * @printconfig: should we print the contents
7717  *
7718  * helper function to assist in extracting a few useful SEID values.
7719  **/
7720 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
7721                                 struct i40e_aqc_switch_config_element_resp *ele,
7722                                 u16 num_reported, bool printconfig)
7723 {
7724         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
7725         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
7726         u8 element_type = ele->element_type;
7727         u16 seid = le16_to_cpu(ele->seid);
7728
7729         if (printconfig)
7730                 dev_info(&pf->pdev->dev,
7731                          "type=%d seid=%d uplink=%d downlink=%d\n",
7732                          element_type, seid, uplink_seid, downlink_seid);
7733
7734         switch (element_type) {
7735         case I40E_SWITCH_ELEMENT_TYPE_MAC:
7736                 pf->mac_seid = seid;
7737                 break;
7738         case I40E_SWITCH_ELEMENT_TYPE_VEB:
7739                 /* Main VEB? */
7740                 if (uplink_seid != pf->mac_seid)
7741                         break;
7742                 if (pf->lan_veb == I40E_NO_VEB) {
7743                         int v;
7744
7745                         /* find existing or else empty VEB */
7746                         for (v = 0; v < I40E_MAX_VEB; v++) {
7747                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
7748                                         pf->lan_veb = v;
7749                                         break;
7750                                 }
7751                         }
7752                         if (pf->lan_veb == I40E_NO_VEB) {
7753                                 v = i40e_veb_mem_alloc(pf);
7754                                 if (v < 0)
7755                                         break;
7756                                 pf->lan_veb = v;
7757                         }
7758                 }
7759
7760                 pf->veb[pf->lan_veb]->seid = seid;
7761                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
7762                 pf->veb[pf->lan_veb]->pf = pf;
7763                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
7764                 break;
7765         case I40E_SWITCH_ELEMENT_TYPE_VSI:
7766                 if (num_reported != 1)
7767                         break;
7768                 /* This is immediately after a reset so we can assume this is
7769                  * the PF's VSI
7770                  */
7771                 pf->mac_seid = uplink_seid;
7772                 pf->pf_seid = downlink_seid;
7773                 pf->main_vsi_seid = seid;
7774                 if (printconfig)
7775                         dev_info(&pf->pdev->dev,
7776                                  "pf_seid=%d main_vsi_seid=%d\n",
7777                                  pf->pf_seid, pf->main_vsi_seid);
7778                 break;
7779         case I40E_SWITCH_ELEMENT_TYPE_PF:
7780         case I40E_SWITCH_ELEMENT_TYPE_VF:
7781         case I40E_SWITCH_ELEMENT_TYPE_EMP:
7782         case I40E_SWITCH_ELEMENT_TYPE_BMC:
7783         case I40E_SWITCH_ELEMENT_TYPE_PE:
7784         case I40E_SWITCH_ELEMENT_TYPE_PA:
7785                 /* ignore these for now */
7786                 break;
7787         default:
7788                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
7789                          element_type, seid);
7790                 break;
7791         }
7792 }
7793
7794 /**
7795  * i40e_fetch_switch_configuration - Get switch config from firmware
7796  * @pf: board private structure
7797  * @printconfig: should we print the contents
7798  *
7799  * Get the current switch configuration from the device and
7800  * extract a few useful SEID values.
7801  **/
7802 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
7803 {
7804         struct i40e_aqc_get_switch_config_resp *sw_config;
7805         u16 next_seid = 0;
7806         int ret = 0;
7807         u8 *aq_buf;
7808         int i;
7809
7810         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
7811         if (!aq_buf)
7812                 return -ENOMEM;
7813
7814         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
7815         do {
7816                 u16 num_reported, num_total;
7817
7818                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
7819                                                 I40E_AQ_LARGE_BUF,
7820                                                 &next_seid, NULL);
7821                 if (ret) {
7822                         dev_info(&pf->pdev->dev,
7823                                  "get switch config failed %d aq_err=%x\n",
7824                                  ret, pf->hw.aq.asq_last_status);
7825                         kfree(aq_buf);
7826                         return -ENOENT;
7827                 }
7828
7829                 num_reported = le16_to_cpu(sw_config->header.num_reported);
7830                 num_total = le16_to_cpu(sw_config->header.num_total);
7831
7832                 if (printconfig)
7833                         dev_info(&pf->pdev->dev,
7834                                  "header: %d reported %d total\n",
7835                                  num_reported, num_total);
7836
7837                 if (num_reported) {
7838                         int sz = sizeof(*sw_config) * num_reported;
7839
7840                         kfree(pf->sw_config);
7841                         pf->sw_config = kzalloc(sz, GFP_KERNEL);
7842                         if (pf->sw_config)
7843                                 memcpy(pf->sw_config, sw_config, sz);
7844                 }
7845
7846                 for (i = 0; i < num_reported; i++) {
7847                         struct i40e_aqc_switch_config_element_resp *ele =
7848                                 &sw_config->element[i];
7849
7850                         i40e_setup_pf_switch_element(pf, ele, num_reported,
7851                                                      printconfig);
7852                 }
7853         } while (next_seid != 0);
7854
7855         kfree(aq_buf);
7856         return ret;
7857 }
7858
7859 /**
7860  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
7861  * @pf: board private structure
7862  * @reinit: if the Main VSI needs to re-initialized.
7863  *
7864  * Returns 0 on success, negative value on failure
7865  **/
7866 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
7867 {
7868         u32 rxfc = 0, txfc = 0, rxfc_reg;
7869         int ret;
7870
7871         /* find out what's out there already */
7872         ret = i40e_fetch_switch_configuration(pf, false);
7873         if (ret) {
7874                 dev_info(&pf->pdev->dev,
7875                          "couldn't fetch switch config, err %d, aq_err %d\n",
7876                          ret, pf->hw.aq.asq_last_status);
7877                 return ret;
7878         }
7879         i40e_pf_reset_stats(pf);
7880
7881         /* first time setup */
7882         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
7883                 struct i40e_vsi *vsi = NULL;
7884                 u16 uplink_seid;
7885
7886                 /* Set up the PF VSI associated with the PF's main VSI
7887                  * that is already in the HW switch
7888                  */
7889                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
7890                         uplink_seid = pf->veb[pf->lan_veb]->seid;
7891                 else
7892                         uplink_seid = pf->mac_seid;
7893                 if (pf->lan_vsi == I40E_NO_VSI)
7894                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
7895                 else if (reinit)
7896                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
7897                 if (!vsi) {
7898                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
7899                         i40e_fdir_teardown(pf);
7900                         return -EAGAIN;
7901                 }
7902         } else {
7903                 /* force a reset of TC and queue layout configurations */
7904                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
7905                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
7906                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
7907                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
7908         }
7909         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
7910
7911         i40e_fdir_sb_setup(pf);
7912
7913         /* Setup static PF queue filter control settings */
7914         ret = i40e_setup_pf_filter_control(pf);
7915         if (ret) {
7916                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
7917                          ret);
7918                 /* Failure here should not stop continuing other steps */
7919         }
7920
7921         /* enable RSS in the HW, even for only one queue, as the stack can use
7922          * the hash
7923          */
7924         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
7925                 i40e_config_rss(pf);
7926
7927         /* fill in link information and enable LSE reporting */
7928         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
7929         i40e_link_event(pf);
7930
7931         /* Initialize user-specific link properties */
7932         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
7933                                   I40E_AQ_AN_COMPLETED) ? true : false);
7934         /* requested_mode is set in probe or by ethtool */
7935         if (!pf->fc_autoneg_status)
7936                 goto no_autoneg;
7937
7938         if ((pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX) &&
7939             (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX))
7940                 pf->hw.fc.current_mode = I40E_FC_FULL;
7941         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX)
7942                 pf->hw.fc.current_mode = I40E_FC_TX_PAUSE;
7943         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX)
7944                 pf->hw.fc.current_mode = I40E_FC_RX_PAUSE;
7945         else
7946                 pf->hw.fc.current_mode = I40E_FC_NONE;
7947
7948         /* sync the flow control settings with the auto-neg values */
7949         switch (pf->hw.fc.current_mode) {
7950         case I40E_FC_FULL:
7951                 txfc = 1;
7952                 rxfc = 1;
7953                 break;
7954         case I40E_FC_TX_PAUSE:
7955                 txfc = 1;
7956                 rxfc = 0;
7957                 break;
7958         case I40E_FC_RX_PAUSE:
7959                 txfc = 0;
7960                 rxfc = 1;
7961                 break;
7962         case I40E_FC_NONE:
7963         case I40E_FC_DEFAULT:
7964                 txfc = 0;
7965                 rxfc = 0;
7966                 break;
7967         case I40E_FC_PFC:
7968                 /* TBD */
7969                 break;
7970         /* no default case, we have to handle all possibilities here */
7971         }
7972
7973         wr32(&pf->hw, I40E_PRTDCB_FCCFG, txfc << I40E_PRTDCB_FCCFG_TFCE_SHIFT);
7974
7975         rxfc_reg = rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
7976                    ~I40E_PRTDCB_MFLCN_RFCE_MASK;
7977         rxfc_reg |= (rxfc << I40E_PRTDCB_MFLCN_RFCE_SHIFT);
7978
7979         wr32(&pf->hw, I40E_PRTDCB_MFLCN, rxfc_reg);
7980
7981         goto fc_complete;
7982
7983 no_autoneg:
7984         /* disable L2 flow control, user can turn it on if they wish */
7985         wr32(&pf->hw, I40E_PRTDCB_FCCFG, 0);
7986         wr32(&pf->hw, I40E_PRTDCB_MFLCN, rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
7987                                          ~I40E_PRTDCB_MFLCN_RFCE_MASK);
7988
7989 fc_complete:
7990         i40e_ptp_init(pf);
7991
7992         return ret;
7993 }
7994
7995 /**
7996  * i40e_determine_queue_usage - Work out queue distribution
7997  * @pf: board private structure
7998  **/
7999 static void i40e_determine_queue_usage(struct i40e_pf *pf)
8000 {
8001         int queues_left;
8002
8003         pf->num_lan_qps = 0;
8004
8005         /* Find the max queues to be put into basic use.  We'll always be
8006          * using TC0, whether or not DCB is running, and TC0 will get the
8007          * big RSS set.
8008          */
8009         queues_left = pf->hw.func_caps.num_tx_qp;
8010
8011         if ((queues_left == 1) ||
8012             !(pf->flags & I40E_FLAG_MSIX_ENABLED) ||
8013             !(pf->flags & (I40E_FLAG_RSS_ENABLED | I40E_FLAG_FD_SB_ENABLED |
8014                            I40E_FLAG_DCB_ENABLED))) {
8015                 /* one qp for PF, no queues for anything else */
8016                 queues_left = 0;
8017                 pf->rss_size = pf->num_lan_qps = 1;
8018
8019                 /* make sure all the fancies are disabled */
8020                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8021                                I40E_FLAG_FD_SB_ENABLED  |
8022                                I40E_FLAG_FD_ATR_ENABLED |
8023                                I40E_FLAG_DCB_ENABLED    |
8024                                I40E_FLAG_SRIOV_ENABLED  |
8025                                I40E_FLAG_VMDQ_ENABLED);
8026         } else {
8027                 /* Not enough queues for all TCs */
8028                 if ((pf->flags & I40E_FLAG_DCB_ENABLED) &&
8029                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
8030                         pf->flags &= ~I40E_FLAG_DCB_ENABLED;
8031                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
8032                 }
8033                 pf->num_lan_qps = pf->rss_size_max;
8034                 queues_left -= pf->num_lan_qps;
8035         }
8036
8037         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8038                 if (queues_left > 1) {
8039                         queues_left -= 1; /* save 1 queue for FD */
8040                 } else {
8041                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8042                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
8043                 }
8044         }
8045
8046         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8047             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
8048                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
8049                                         (queues_left / pf->num_vf_qps));
8050                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
8051         }
8052
8053         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
8054             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
8055                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
8056                                           (queues_left / pf->num_vmdq_qps));
8057                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
8058         }
8059
8060         pf->queues_left = queues_left;
8061         return;
8062 }
8063
8064 /**
8065  * i40e_setup_pf_filter_control - Setup PF static filter control
8066  * @pf: PF to be setup
8067  *
8068  * i40e_setup_pf_filter_control sets up a pf's initial filter control
8069  * settings. If PE/FCoE are enabled then it will also set the per PF
8070  * based filter sizes required for them. It also enables Flow director,
8071  * ethertype and macvlan type filter settings for the pf.
8072  *
8073  * Returns 0 on success, negative on failure
8074  **/
8075 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
8076 {
8077         struct i40e_filter_control_settings *settings = &pf->filter_settings;
8078
8079         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
8080
8081         /* Flow Director is enabled */
8082         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
8083                 settings->enable_fdir = true;
8084
8085         /* Ethtype and MACVLAN filters enabled for PF */
8086         settings->enable_ethtype = true;
8087         settings->enable_macvlan = true;
8088
8089         if (i40e_set_filter_control(&pf->hw, settings))
8090                 return -ENOENT;
8091
8092         return 0;
8093 }
8094
8095 #define INFO_STRING_LEN 255
8096 static void i40e_print_features(struct i40e_pf *pf)
8097 {
8098         struct i40e_hw *hw = &pf->hw;
8099         char *buf, *string;
8100
8101         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
8102         if (!string) {
8103                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
8104                 return;
8105         }
8106
8107         buf = string;
8108
8109         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
8110 #ifdef CONFIG_PCI_IOV
8111         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
8112 #endif
8113         buf += sprintf(buf, "VSIs: %d QP: %d ", pf->hw.func_caps.num_vsis,
8114                        pf->vsi[pf->lan_vsi]->num_queue_pairs);
8115
8116         if (pf->flags & I40E_FLAG_RSS_ENABLED)
8117                 buf += sprintf(buf, "RSS ");
8118         buf += sprintf(buf, "FDir ");
8119         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
8120                 buf += sprintf(buf, "ATR ");
8121         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
8122                 buf += sprintf(buf, "NTUPLE ");
8123         if (pf->flags & I40E_FLAG_DCB_ENABLED)
8124                 buf += sprintf(buf, "DCB ");
8125         if (pf->flags & I40E_FLAG_PTP)
8126                 buf += sprintf(buf, "PTP ");
8127
8128         BUG_ON(buf > (string + INFO_STRING_LEN));
8129         dev_info(&pf->pdev->dev, "%s\n", string);
8130         kfree(string);
8131 }
8132
8133 /**
8134  * i40e_probe - Device initialization routine
8135  * @pdev: PCI device information struct
8136  * @ent: entry in i40e_pci_tbl
8137  *
8138  * i40e_probe initializes a pf identified by a pci_dev structure.
8139  * The OS initialization, configuring of the pf private structure,
8140  * and a hardware reset occur.
8141  *
8142  * Returns 0 on success, negative on failure
8143  **/
8144 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8145 {
8146         struct i40e_driver_version dv;
8147         struct i40e_pf *pf;
8148         struct i40e_hw *hw;
8149         static u16 pfs_found;
8150         u16 link_status;
8151         int err = 0;
8152         u32 len;
8153         u32 i;
8154
8155         err = pci_enable_device_mem(pdev);
8156         if (err)
8157                 return err;
8158
8159         /* set up for high or low dma */
8160         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
8161         if (err) {
8162                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
8163                 if (err) {
8164                         dev_err(&pdev->dev,
8165                                 "DMA configuration failed: 0x%x\n", err);
8166                         goto err_dma;
8167                 }
8168         }
8169
8170         /* set up pci connections */
8171         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
8172                                            IORESOURCE_MEM), i40e_driver_name);
8173         if (err) {
8174                 dev_info(&pdev->dev,
8175                          "pci_request_selected_regions failed %d\n", err);
8176                 goto err_pci_reg;
8177         }
8178
8179         pci_enable_pcie_error_reporting(pdev);
8180         pci_set_master(pdev);
8181
8182         /* Now that we have a PCI connection, we need to do the
8183          * low level device setup.  This is primarily setting up
8184          * the Admin Queue structures and then querying for the
8185          * device's current profile information.
8186          */
8187         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
8188         if (!pf) {
8189                 err = -ENOMEM;
8190                 goto err_pf_alloc;
8191         }
8192         pf->next_vsi = 0;
8193         pf->pdev = pdev;
8194         set_bit(__I40E_DOWN, &pf->state);
8195
8196         hw = &pf->hw;
8197         hw->back = pf;
8198         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
8199                               pci_resource_len(pdev, 0));
8200         if (!hw->hw_addr) {
8201                 err = -EIO;
8202                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
8203                          (unsigned int)pci_resource_start(pdev, 0),
8204                          (unsigned int)pci_resource_len(pdev, 0), err);
8205                 goto err_ioremap;
8206         }
8207         hw->vendor_id = pdev->vendor;
8208         hw->device_id = pdev->device;
8209         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
8210         hw->subsystem_vendor_id = pdev->subsystem_vendor;
8211         hw->subsystem_device_id = pdev->subsystem_device;
8212         hw->bus.device = PCI_SLOT(pdev->devfn);
8213         hw->bus.func = PCI_FUNC(pdev->devfn);
8214         pf->instance = pfs_found;
8215
8216         /* do a special CORER for clearing PXE mode once at init */
8217         if (hw->revision_id == 0 &&
8218             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
8219                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
8220                 i40e_flush(hw);
8221                 msleep(200);
8222                 pf->corer_count++;
8223
8224                 i40e_clear_pxe_mode(hw);
8225         }
8226
8227         /* Reset here to make sure all is clean and to define PF 'n' */
8228         err = i40e_pf_reset(hw);
8229         if (err) {
8230                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
8231                 goto err_pf_reset;
8232         }
8233         pf->pfr_count++;
8234
8235         hw->aq.num_arq_entries = I40E_AQ_LEN;
8236         hw->aq.num_asq_entries = I40E_AQ_LEN;
8237         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
8238         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
8239         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
8240         snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
8241                  "%s-pf%d:misc",
8242                  dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
8243
8244         err = i40e_init_shared_code(hw);
8245         if (err) {
8246                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
8247                 goto err_pf_reset;
8248         }
8249
8250         /* set up a default setting for link flow control */
8251         pf->hw.fc.requested_mode = I40E_FC_NONE;
8252
8253         err = i40e_init_adminq(hw);
8254         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
8255         if (err) {
8256                 dev_info(&pdev->dev,
8257                          "init_adminq failed: %d expecting API %02x.%02x\n",
8258                          err,
8259                          I40E_FW_API_VERSION_MAJOR, I40E_FW_API_VERSION_MINOR);
8260                 goto err_pf_reset;
8261         }
8262
8263         i40e_verify_eeprom(pf);
8264
8265         i40e_clear_pxe_mode(hw);
8266         err = i40e_get_capabilities(pf);
8267         if (err)
8268                 goto err_adminq_setup;
8269
8270         err = i40e_sw_init(pf);
8271         if (err) {
8272                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
8273                 goto err_sw_init;
8274         }
8275
8276         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
8277                                 hw->func_caps.num_rx_qp,
8278                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
8279         if (err) {
8280                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
8281                 goto err_init_lan_hmc;
8282         }
8283
8284         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
8285         if (err) {
8286                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
8287                 err = -ENOENT;
8288                 goto err_configure_lan_hmc;
8289         }
8290
8291         i40e_get_mac_addr(hw, hw->mac.addr);
8292         if (!is_valid_ether_addr(hw->mac.addr)) {
8293                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
8294                 err = -EIO;
8295                 goto err_mac_addr;
8296         }
8297         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
8298         memcpy(hw->mac.perm_addr, hw->mac.addr, ETH_ALEN);
8299
8300         pci_set_drvdata(pdev, pf);
8301         pci_save_state(pdev);
8302 #ifdef CONFIG_I40E_DCB
8303         err = i40e_init_pf_dcb(pf);
8304         if (err) {
8305                 dev_info(&pdev->dev, "init_pf_dcb failed: %d\n", err);
8306                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
8307                 /* Continue without DCB enabled */
8308         }
8309 #endif /* CONFIG_I40E_DCB */
8310
8311         /* set up periodic task facility */
8312         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
8313         pf->service_timer_period = HZ;
8314
8315         INIT_WORK(&pf->service_task, i40e_service_task);
8316         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
8317         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
8318         pf->link_check_timeout = jiffies;
8319
8320         /* WoL defaults to disabled */
8321         pf->wol_en = false;
8322         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
8323
8324         /* set up the main switch operations */
8325         i40e_determine_queue_usage(pf);
8326         i40e_init_interrupt_scheme(pf);
8327
8328         /* Set up the *vsi struct based on the number of VSIs in the HW,
8329          * and set up our local tracking of the MAIN PF vsi.
8330          */
8331         len = sizeof(struct i40e_vsi *) * pf->hw.func_caps.num_vsis;
8332         pf->vsi = kzalloc(len, GFP_KERNEL);
8333         if (!pf->vsi) {
8334                 err = -ENOMEM;
8335                 goto err_switch_setup;
8336         }
8337
8338         err = i40e_setup_pf_switch(pf, false);
8339         if (err) {
8340                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
8341                 goto err_vsis;
8342         }
8343         /* if FDIR VSI was set up, start it now */
8344         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
8345                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
8346                         i40e_vsi_open(pf->vsi[i]);
8347                         break;
8348                 }
8349         }
8350
8351         /* The main driver is (mostly) up and happy. We need to set this state
8352          * before setting up the misc vector or we get a race and the vector
8353          * ends up disabled forever.
8354          */
8355         clear_bit(__I40E_DOWN, &pf->state);
8356
8357         /* In case of MSIX we are going to setup the misc vector right here
8358          * to handle admin queue events etc. In case of legacy and MSI
8359          * the misc functionality and queue processing is combined in
8360          * the same vector and that gets setup at open.
8361          */
8362         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8363                 err = i40e_setup_misc_vector(pf);
8364                 if (err) {
8365                         dev_info(&pdev->dev,
8366                                  "setup of misc vector failed: %d\n", err);
8367                         goto err_vsis;
8368                 }
8369         }
8370
8371 #ifdef CONFIG_PCI_IOV
8372         /* prep for VF support */
8373         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8374             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
8375             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
8376                 u32 val;
8377
8378                 /* disable link interrupts for VFs */
8379                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
8380                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
8381                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
8382                 i40e_flush(hw);
8383
8384                 if (pci_num_vf(pdev)) {
8385                         dev_info(&pdev->dev,
8386                                  "Active VFs found, allocating resources.\n");
8387                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
8388                         if (err)
8389                                 dev_info(&pdev->dev,
8390                                          "Error %d allocating resources for existing VFs\n",
8391                                          err);
8392                 }
8393         }
8394 #endif /* CONFIG_PCI_IOV */
8395
8396         pfs_found++;
8397
8398         i40e_dbg_pf_init(pf);
8399
8400         /* tell the firmware that we're starting */
8401         dv.major_version = DRV_VERSION_MAJOR;
8402         dv.minor_version = DRV_VERSION_MINOR;
8403         dv.build_version = DRV_VERSION_BUILD;
8404         dv.subbuild_version = 0;
8405         strncpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
8406         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
8407
8408         /* since everything's happy, start the service_task timer */
8409         mod_timer(&pf->service_timer,
8410                   round_jiffies(jiffies + pf->service_timer_period));
8411
8412         /* Get the negotiated link width and speed from PCI config space */
8413         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
8414
8415         i40e_set_pci_config_data(hw, link_status);
8416
8417         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
8418                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
8419                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
8420                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
8421                  "Unknown"),
8422                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
8423                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
8424                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
8425                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
8426                  "Unknown"));
8427
8428         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
8429             hw->bus.speed < i40e_bus_speed_8000) {
8430                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
8431                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
8432         }
8433
8434         /* print a string summarizing features */
8435         i40e_print_features(pf);
8436
8437         return 0;
8438
8439         /* Unwind what we've done if something failed in the setup */
8440 err_vsis:
8441         set_bit(__I40E_DOWN, &pf->state);
8442         i40e_clear_interrupt_scheme(pf);
8443         kfree(pf->vsi);
8444 err_switch_setup:
8445         i40e_reset_interrupt_capability(pf);
8446         del_timer_sync(&pf->service_timer);
8447 err_mac_addr:
8448 err_configure_lan_hmc:
8449         (void)i40e_shutdown_lan_hmc(hw);
8450 err_init_lan_hmc:
8451         kfree(pf->qp_pile);
8452         kfree(pf->irq_pile);
8453 err_sw_init:
8454 err_adminq_setup:
8455         (void)i40e_shutdown_adminq(hw);
8456 err_pf_reset:
8457         iounmap(hw->hw_addr);
8458 err_ioremap:
8459         kfree(pf);
8460 err_pf_alloc:
8461         pci_disable_pcie_error_reporting(pdev);
8462         pci_release_selected_regions(pdev,
8463                                      pci_select_bars(pdev, IORESOURCE_MEM));
8464 err_pci_reg:
8465 err_dma:
8466         pci_disable_device(pdev);
8467         return err;
8468 }
8469
8470 /**
8471  * i40e_remove - Device removal routine
8472  * @pdev: PCI device information struct
8473  *
8474  * i40e_remove is called by the PCI subsystem to alert the driver
8475  * that is should release a PCI device.  This could be caused by a
8476  * Hot-Plug event, or because the driver is going to be removed from
8477  * memory.
8478  **/
8479 static void i40e_remove(struct pci_dev *pdev)
8480 {
8481         struct i40e_pf *pf = pci_get_drvdata(pdev);
8482         i40e_status ret_code;
8483         u32 reg;
8484         int i;
8485
8486         i40e_dbg_pf_exit(pf);
8487
8488         i40e_ptp_stop(pf);
8489
8490         /* no more scheduling of any task */
8491         set_bit(__I40E_DOWN, &pf->state);
8492         del_timer_sync(&pf->service_timer);
8493         cancel_work_sync(&pf->service_task);
8494
8495         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
8496                 i40e_free_vfs(pf);
8497                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
8498         }
8499
8500         i40e_fdir_teardown(pf);
8501
8502         /* If there is a switch structure or any orphans, remove them.
8503          * This will leave only the PF's VSI remaining.
8504          */
8505         for (i = 0; i < I40E_MAX_VEB; i++) {
8506                 if (!pf->veb[i])
8507                         continue;
8508
8509                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
8510                     pf->veb[i]->uplink_seid == 0)
8511                         i40e_switch_branch_release(pf->veb[i]);
8512         }
8513
8514         /* Now we can shutdown the PF's VSI, just before we kill
8515          * adminq and hmc.
8516          */
8517         if (pf->vsi[pf->lan_vsi])
8518                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
8519
8520         i40e_stop_misc_vector(pf);
8521         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8522                 synchronize_irq(pf->msix_entries[0].vector);
8523                 free_irq(pf->msix_entries[0].vector, pf);
8524         }
8525
8526         /* shutdown and destroy the HMC */
8527         ret_code = i40e_shutdown_lan_hmc(&pf->hw);
8528         if (ret_code)
8529                 dev_warn(&pdev->dev,
8530                          "Failed to destroy the HMC resources: %d\n", ret_code);
8531
8532         /* shutdown the adminq */
8533         ret_code = i40e_shutdown_adminq(&pf->hw);
8534         if (ret_code)
8535                 dev_warn(&pdev->dev,
8536                          "Failed to destroy the Admin Queue resources: %d\n",
8537                          ret_code);
8538
8539         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
8540         i40e_clear_interrupt_scheme(pf);
8541         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
8542                 if (pf->vsi[i]) {
8543                         i40e_vsi_clear_rings(pf->vsi[i]);
8544                         i40e_vsi_clear(pf->vsi[i]);
8545                         pf->vsi[i] = NULL;
8546                 }
8547         }
8548
8549         for (i = 0; i < I40E_MAX_VEB; i++) {
8550                 kfree(pf->veb[i]);
8551                 pf->veb[i] = NULL;
8552         }
8553
8554         kfree(pf->qp_pile);
8555         kfree(pf->irq_pile);
8556         kfree(pf->sw_config);
8557         kfree(pf->vsi);
8558
8559         /* force a PF reset to clean anything leftover */
8560         reg = rd32(&pf->hw, I40E_PFGEN_CTRL);
8561         wr32(&pf->hw, I40E_PFGEN_CTRL, (reg | I40E_PFGEN_CTRL_PFSWR_MASK));
8562         i40e_flush(&pf->hw);
8563
8564         iounmap(pf->hw.hw_addr);
8565         kfree(pf);
8566         pci_release_selected_regions(pdev,
8567                                      pci_select_bars(pdev, IORESOURCE_MEM));
8568
8569         pci_disable_pcie_error_reporting(pdev);
8570         pci_disable_device(pdev);
8571 }
8572
8573 /**
8574  * i40e_pci_error_detected - warning that something funky happened in PCI land
8575  * @pdev: PCI device information struct
8576  *
8577  * Called to warn that something happened and the error handling steps
8578  * are in progress.  Allows the driver to quiesce things, be ready for
8579  * remediation.
8580  **/
8581 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
8582                                                 enum pci_channel_state error)
8583 {
8584         struct i40e_pf *pf = pci_get_drvdata(pdev);
8585
8586         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
8587
8588         /* shutdown all operations */
8589         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
8590                 rtnl_lock();
8591                 i40e_prep_for_reset(pf);
8592                 rtnl_unlock();
8593         }
8594
8595         /* Request a slot reset */
8596         return PCI_ERS_RESULT_NEED_RESET;
8597 }
8598
8599 /**
8600  * i40e_pci_error_slot_reset - a PCI slot reset just happened
8601  * @pdev: PCI device information struct
8602  *
8603  * Called to find if the driver can work with the device now that
8604  * the pci slot has been reset.  If a basic connection seems good
8605  * (registers are readable and have sane content) then return a
8606  * happy little PCI_ERS_RESULT_xxx.
8607  **/
8608 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
8609 {
8610         struct i40e_pf *pf = pci_get_drvdata(pdev);
8611         pci_ers_result_t result;
8612         int err;
8613         u32 reg;
8614
8615         dev_info(&pdev->dev, "%s\n", __func__);
8616         if (pci_enable_device_mem(pdev)) {
8617                 dev_info(&pdev->dev,
8618                          "Cannot re-enable PCI device after reset.\n");
8619                 result = PCI_ERS_RESULT_DISCONNECT;
8620         } else {
8621                 pci_set_master(pdev);
8622                 pci_restore_state(pdev);
8623                 pci_save_state(pdev);
8624                 pci_wake_from_d3(pdev, false);
8625
8626                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
8627                 if (reg == 0)
8628                         result = PCI_ERS_RESULT_RECOVERED;
8629                 else
8630                         result = PCI_ERS_RESULT_DISCONNECT;
8631         }
8632
8633         err = pci_cleanup_aer_uncorrect_error_status(pdev);
8634         if (err) {
8635                 dev_info(&pdev->dev,
8636                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
8637                          err);
8638                 /* non-fatal, continue */
8639         }
8640
8641         return result;
8642 }
8643
8644 /**
8645  * i40e_pci_error_resume - restart operations after PCI error recovery
8646  * @pdev: PCI device information struct
8647  *
8648  * Called to allow the driver to bring things back up after PCI error
8649  * and/or reset recovery has finished.
8650  **/
8651 static void i40e_pci_error_resume(struct pci_dev *pdev)
8652 {
8653         struct i40e_pf *pf = pci_get_drvdata(pdev);
8654
8655         dev_info(&pdev->dev, "%s\n", __func__);
8656         if (test_bit(__I40E_SUSPENDED, &pf->state))
8657                 return;
8658
8659         rtnl_lock();
8660         i40e_handle_reset_warning(pf);
8661         rtnl_lock();
8662 }
8663
8664 /**
8665  * i40e_shutdown - PCI callback for shutting down
8666  * @pdev: PCI device information struct
8667  **/
8668 static void i40e_shutdown(struct pci_dev *pdev)
8669 {
8670         struct i40e_pf *pf = pci_get_drvdata(pdev);
8671         struct i40e_hw *hw = &pf->hw;
8672
8673         set_bit(__I40E_SUSPENDED, &pf->state);
8674         set_bit(__I40E_DOWN, &pf->state);
8675         rtnl_lock();
8676         i40e_prep_for_reset(pf);
8677         rtnl_unlock();
8678
8679         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
8680         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
8681
8682         if (system_state == SYSTEM_POWER_OFF) {
8683                 pci_wake_from_d3(pdev, pf->wol_en);
8684                 pci_set_power_state(pdev, PCI_D3hot);
8685         }
8686 }
8687
8688 #ifdef CONFIG_PM
8689 /**
8690  * i40e_suspend - PCI callback for moving to D3
8691  * @pdev: PCI device information struct
8692  **/
8693 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
8694 {
8695         struct i40e_pf *pf = pci_get_drvdata(pdev);
8696         struct i40e_hw *hw = &pf->hw;
8697
8698         set_bit(__I40E_SUSPENDED, &pf->state);
8699         set_bit(__I40E_DOWN, &pf->state);
8700         rtnl_lock();
8701         i40e_prep_for_reset(pf);
8702         rtnl_unlock();
8703
8704         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
8705         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
8706
8707         pci_wake_from_d3(pdev, pf->wol_en);
8708         pci_set_power_state(pdev, PCI_D3hot);
8709
8710         return 0;
8711 }
8712
8713 /**
8714  * i40e_resume - PCI callback for waking up from D3
8715  * @pdev: PCI device information struct
8716  **/
8717 static int i40e_resume(struct pci_dev *pdev)
8718 {
8719         struct i40e_pf *pf = pci_get_drvdata(pdev);
8720         u32 err;
8721
8722         pci_set_power_state(pdev, PCI_D0);
8723         pci_restore_state(pdev);
8724         /* pci_restore_state() clears dev->state_saves, so
8725          * call pci_save_state() again to restore it.
8726          */
8727         pci_save_state(pdev);
8728
8729         err = pci_enable_device_mem(pdev);
8730         if (err) {
8731                 dev_err(&pdev->dev,
8732                         "%s: Cannot enable PCI device from suspend\n",
8733                         __func__);
8734                 return err;
8735         }
8736         pci_set_master(pdev);
8737
8738         /* no wakeup events while running */
8739         pci_wake_from_d3(pdev, false);
8740
8741         /* handling the reset will rebuild the device state */
8742         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
8743                 clear_bit(__I40E_DOWN, &pf->state);
8744                 rtnl_lock();
8745                 i40e_reset_and_rebuild(pf, false);
8746                 rtnl_unlock();
8747         }
8748
8749         return 0;
8750 }
8751
8752 #endif
8753 static const struct pci_error_handlers i40e_err_handler = {
8754         .error_detected = i40e_pci_error_detected,
8755         .slot_reset = i40e_pci_error_slot_reset,
8756         .resume = i40e_pci_error_resume,
8757 };
8758
8759 static struct pci_driver i40e_driver = {
8760         .name     = i40e_driver_name,
8761         .id_table = i40e_pci_tbl,
8762         .probe    = i40e_probe,
8763         .remove   = i40e_remove,
8764 #ifdef CONFIG_PM
8765         .suspend  = i40e_suspend,
8766         .resume   = i40e_resume,
8767 #endif
8768         .shutdown = i40e_shutdown,
8769         .err_handler = &i40e_err_handler,
8770         .sriov_configure = i40e_pci_sriov_configure,
8771 };
8772
8773 /**
8774  * i40e_init_module - Driver registration routine
8775  *
8776  * i40e_init_module is the first routine called when the driver is
8777  * loaded. All it does is register with the PCI subsystem.
8778  **/
8779 static int __init i40e_init_module(void)
8780 {
8781         pr_info("%s: %s - version %s\n", i40e_driver_name,
8782                 i40e_driver_string, i40e_driver_version_str);
8783         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
8784         i40e_dbg_init();
8785         return pci_register_driver(&i40e_driver);
8786 }
8787 module_init(i40e_init_module);
8788
8789 /**
8790  * i40e_exit_module - Driver exit cleanup routine
8791  *
8792  * i40e_exit_module is called just before the driver is removed
8793  * from memory.
8794  **/
8795 static void __exit i40e_exit_module(void)
8796 {
8797         pci_unregister_driver(&i40e_driver);
8798         i40e_dbg_exit();
8799 }
8800 module_exit(i40e_exit_module);