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 36
  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
2316         /* clear the context in the HMC */
2317         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2318         if (err) {
2319                 dev_info(&vsi->back->pdev->dev,
2320                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2321                          ring->queue_index, pf_q, err);
2322                 return -ENOMEM;
2323         }
2324
2325         /* set the context in the HMC */
2326         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2327         if (err) {
2328                 dev_info(&vsi->back->pdev->dev,
2329                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2330                          ring->queue_index, pf_q, err);
2331                 return -ENOMEM;
2332         }
2333
2334         /* cache tail for quicker writes, and clear the reg before use */
2335         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2336         writel(0, ring->tail);
2337
2338         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2339
2340         return 0;
2341 }
2342
2343 /**
2344  * i40e_vsi_configure_tx - Configure the VSI for Tx
2345  * @vsi: VSI structure describing this set of rings and resources
2346  *
2347  * Configure the Tx VSI for operation.
2348  **/
2349 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2350 {
2351         int err = 0;
2352         u16 i;
2353
2354         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2355                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2356
2357         return err;
2358 }
2359
2360 /**
2361  * i40e_vsi_configure_rx - Configure the VSI for Rx
2362  * @vsi: the VSI being configured
2363  *
2364  * Configure the Rx VSI for operation.
2365  **/
2366 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2367 {
2368         int err = 0;
2369         u16 i;
2370
2371         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2372                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2373                                + ETH_FCS_LEN + VLAN_HLEN;
2374         else
2375                 vsi->max_frame = I40E_RXBUFFER_2048;
2376
2377         /* figure out correct receive buffer length */
2378         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2379                                     I40E_FLAG_RX_PS_ENABLED)) {
2380         case I40E_FLAG_RX_1BUF_ENABLED:
2381                 vsi->rx_hdr_len = 0;
2382                 vsi->rx_buf_len = vsi->max_frame;
2383                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2384                 break;
2385         case I40E_FLAG_RX_PS_ENABLED:
2386                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2387                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2388                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2389                 break;
2390         default:
2391                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2392                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2393                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2394                 break;
2395         }
2396
2397         /* round up for the chip's needs */
2398         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2399                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2400         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2401                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2402
2403         /* set up individual rings */
2404         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2405                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2406
2407         return err;
2408 }
2409
2410 /**
2411  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2412  * @vsi: ptr to the VSI
2413  **/
2414 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2415 {
2416         u16 qoffset, qcount;
2417         int i, n;
2418
2419         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2420                 return;
2421
2422         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2423                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2424                         continue;
2425
2426                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2427                 qcount = vsi->tc_config.tc_info[n].qcount;
2428                 for (i = qoffset; i < (qoffset + qcount); i++) {
2429                         struct i40e_ring *rx_ring = vsi->rx_rings[i];
2430                         struct i40e_ring *tx_ring = vsi->tx_rings[i];
2431                         rx_ring->dcb_tc = n;
2432                         tx_ring->dcb_tc = n;
2433                 }
2434         }
2435 }
2436
2437 /**
2438  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2439  * @vsi: ptr to the VSI
2440  **/
2441 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2442 {
2443         if (vsi->netdev)
2444                 i40e_set_rx_mode(vsi->netdev);
2445 }
2446
2447 /**
2448  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2449  * @vsi: Pointer to the targeted VSI
2450  *
2451  * This function replays the hlist on the hw where all the SB Flow Director
2452  * filters were saved.
2453  **/
2454 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2455 {
2456         struct i40e_fdir_filter *filter;
2457         struct i40e_pf *pf = vsi->back;
2458         struct hlist_node *node;
2459
2460         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2461                 return;
2462
2463         hlist_for_each_entry_safe(filter, node,
2464                                   &pf->fdir_filter_list, fdir_node) {
2465                 i40e_add_del_fdir(vsi, filter, true);
2466         }
2467 }
2468
2469 /**
2470  * i40e_vsi_configure - Set up the VSI for action
2471  * @vsi: the VSI being configured
2472  **/
2473 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2474 {
2475         int err;
2476
2477         i40e_set_vsi_rx_mode(vsi);
2478         i40e_restore_vlan(vsi);
2479         i40e_vsi_config_dcb_rings(vsi);
2480         err = i40e_vsi_configure_tx(vsi);
2481         if (!err)
2482                 err = i40e_vsi_configure_rx(vsi);
2483
2484         return err;
2485 }
2486
2487 /**
2488  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2489  * @vsi: the VSI being configured
2490  **/
2491 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2492 {
2493         struct i40e_pf *pf = vsi->back;
2494         struct i40e_q_vector *q_vector;
2495         struct i40e_hw *hw = &pf->hw;
2496         u16 vector;
2497         int i, q;
2498         u32 val;
2499         u32 qp;
2500
2501         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2502          * and PFINT_LNKLSTn registers, e.g.:
2503          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2504          */
2505         qp = vsi->base_queue;
2506         vector = vsi->base_vector;
2507         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2508                 q_vector = vsi->q_vectors[i];
2509                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2510                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2511                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2512                      q_vector->rx.itr);
2513                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2514                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2515                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2516                      q_vector->tx.itr);
2517
2518                 /* Linked list for the queuepairs assigned to this vector */
2519                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2520                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2521                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2522                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2523                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2524                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2525                               (I40E_QUEUE_TYPE_TX
2526                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2527
2528                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2529
2530                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2531                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2532                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2533                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2534                               (I40E_QUEUE_TYPE_RX
2535                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2536
2537                         /* Terminate the linked list */
2538                         if (q == (q_vector->num_ringpairs - 1))
2539                                 val |= (I40E_QUEUE_END_OF_LIST
2540                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2541
2542                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2543                         qp++;
2544                 }
2545         }
2546
2547         i40e_flush(hw);
2548 }
2549
2550 /**
2551  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2552  * @hw: ptr to the hardware info
2553  **/
2554 static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
2555 {
2556         u32 val;
2557
2558         /* clear things first */
2559         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2560         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2561
2562         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2563               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2564               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2565               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2566               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2567               I40E_PFINT_ICR0_ENA_TIMESYNC_MASK      |
2568               I40E_PFINT_ICR0_ENA_STORM_DETECT_MASK  |
2569               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2570               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2571               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2572
2573         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2574
2575         /* SW_ITR_IDX = 0, but don't change INTENA */
2576         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2577                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2578
2579         /* OTHER_ITR_IDX = 0 */
2580         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2581 }
2582
2583 /**
2584  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2585  * @vsi: the VSI being configured
2586  **/
2587 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2588 {
2589         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2590         struct i40e_pf *pf = vsi->back;
2591         struct i40e_hw *hw = &pf->hw;
2592         u32 val;
2593
2594         /* set the ITR configuration */
2595         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2596         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2597         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2598         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2599         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2600         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2601
2602         i40e_enable_misc_int_causes(hw);
2603
2604         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2605         wr32(hw, I40E_PFINT_LNKLST0, 0);
2606
2607         /* Associate the queue pair to the vector and enable the queue int */
2608         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2609               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2610               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2611
2612         wr32(hw, I40E_QINT_RQCTL(0), val);
2613
2614         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2615               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2616               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2617
2618         wr32(hw, I40E_QINT_TQCTL(0), val);
2619         i40e_flush(hw);
2620 }
2621
2622 /**
2623  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2624  * @pf: board private structure
2625  **/
2626 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2627 {
2628         struct i40e_hw *hw = &pf->hw;
2629
2630         wr32(hw, I40E_PFINT_DYN_CTL0,
2631              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2632         i40e_flush(hw);
2633 }
2634
2635 /**
2636  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2637  * @pf: board private structure
2638  **/
2639 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2640 {
2641         struct i40e_hw *hw = &pf->hw;
2642         u32 val;
2643
2644         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2645               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2646               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2647
2648         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2649         i40e_flush(hw);
2650 }
2651
2652 /**
2653  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2654  * @vsi: pointer to a vsi
2655  * @vector: enable a particular Hw Interrupt vector
2656  **/
2657 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2658 {
2659         struct i40e_pf *pf = vsi->back;
2660         struct i40e_hw *hw = &pf->hw;
2661         u32 val;
2662
2663         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2664               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2665               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2666         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2667         /* skip the flush */
2668 }
2669
2670 /**
2671  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2672  * @irq: interrupt number
2673  * @data: pointer to a q_vector
2674  **/
2675 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2676 {
2677         struct i40e_q_vector *q_vector = data;
2678
2679         if (!q_vector->tx.ring && !q_vector->rx.ring)
2680                 return IRQ_HANDLED;
2681
2682         napi_schedule(&q_vector->napi);
2683
2684         return IRQ_HANDLED;
2685 }
2686
2687 /**
2688  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2689  * @vsi: the VSI being configured
2690  * @basename: name for the vector
2691  *
2692  * Allocates MSI-X vectors and requests interrupts from the kernel.
2693  **/
2694 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2695 {
2696         int q_vectors = vsi->num_q_vectors;
2697         struct i40e_pf *pf = vsi->back;
2698         int base = vsi->base_vector;
2699         int rx_int_idx = 0;
2700         int tx_int_idx = 0;
2701         int vector, err;
2702
2703         for (vector = 0; vector < q_vectors; vector++) {
2704                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2705
2706                 if (q_vector->tx.ring && q_vector->rx.ring) {
2707                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2708                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2709                         tx_int_idx++;
2710                 } else if (q_vector->rx.ring) {
2711                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2712                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
2713                 } else if (q_vector->tx.ring) {
2714                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2715                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
2716                 } else {
2717                         /* skip this unused q_vector */
2718                         continue;
2719                 }
2720                 err = request_irq(pf->msix_entries[base + vector].vector,
2721                                   vsi->irq_handler,
2722                                   0,
2723                                   q_vector->name,
2724                                   q_vector);
2725                 if (err) {
2726                         dev_info(&pf->pdev->dev,
2727                                  "%s: request_irq failed, error: %d\n",
2728                                  __func__, err);
2729                         goto free_queue_irqs;
2730                 }
2731                 /* assign the mask for this irq */
2732                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2733                                       &q_vector->affinity_mask);
2734         }
2735
2736         return 0;
2737
2738 free_queue_irqs:
2739         while (vector) {
2740                 vector--;
2741                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2742                                       NULL);
2743                 free_irq(pf->msix_entries[base + vector].vector,
2744                          &(vsi->q_vectors[vector]));
2745         }
2746         return err;
2747 }
2748
2749 /**
2750  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
2751  * @vsi: the VSI being un-configured
2752  **/
2753 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
2754 {
2755         struct i40e_pf *pf = vsi->back;
2756         struct i40e_hw *hw = &pf->hw;
2757         int base = vsi->base_vector;
2758         int i;
2759
2760         for (i = 0; i < vsi->num_queue_pairs; i++) {
2761                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
2762                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
2763         }
2764
2765         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2766                 for (i = vsi->base_vector;
2767                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2768                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
2769
2770                 i40e_flush(hw);
2771                 for (i = 0; i < vsi->num_q_vectors; i++)
2772                         synchronize_irq(pf->msix_entries[i + base].vector);
2773         } else {
2774                 /* Legacy and MSI mode - this stops all interrupt handling */
2775                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
2776                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
2777                 i40e_flush(hw);
2778                 synchronize_irq(pf->pdev->irq);
2779         }
2780 }
2781
2782 /**
2783  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
2784  * @vsi: the VSI being configured
2785  **/
2786 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
2787 {
2788         struct i40e_pf *pf = vsi->back;
2789         int i;
2790
2791         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2792                 for (i = vsi->base_vector;
2793                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2794                         i40e_irq_dynamic_enable(vsi, i);
2795         } else {
2796                 i40e_irq_dynamic_enable_icr0(pf);
2797         }
2798
2799         i40e_flush(&pf->hw);
2800         return 0;
2801 }
2802
2803 /**
2804  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
2805  * @pf: board private structure
2806  **/
2807 static void i40e_stop_misc_vector(struct i40e_pf *pf)
2808 {
2809         /* Disable ICR 0 */
2810         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
2811         i40e_flush(&pf->hw);
2812 }
2813
2814 /**
2815  * i40e_intr - MSI/Legacy and non-queue interrupt handler
2816  * @irq: interrupt number
2817  * @data: pointer to a q_vector
2818  *
2819  * This is the handler used for all MSI/Legacy interrupts, and deals
2820  * with both queue and non-queue interrupts.  This is also used in
2821  * MSIX mode to handle the non-queue interrupts.
2822  **/
2823 static irqreturn_t i40e_intr(int irq, void *data)
2824 {
2825         struct i40e_pf *pf = (struct i40e_pf *)data;
2826         struct i40e_hw *hw = &pf->hw;
2827         irqreturn_t ret = IRQ_NONE;
2828         u32 icr0, icr0_remaining;
2829         u32 val, ena_mask;
2830
2831         icr0 = rd32(hw, I40E_PFINT_ICR0);
2832         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
2833
2834         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
2835         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
2836                 goto enable_intr;
2837
2838         /* if interrupt but no bits showing, must be SWINT */
2839         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
2840             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
2841                 pf->sw_int_count++;
2842
2843         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
2844         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
2845
2846                 /* temporarily disable queue cause for NAPI processing */
2847                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
2848                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
2849                 wr32(hw, I40E_QINT_RQCTL(0), qval);
2850
2851                 qval = rd32(hw, I40E_QINT_TQCTL(0));
2852                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
2853                 wr32(hw, I40E_QINT_TQCTL(0), qval);
2854
2855                 if (!test_bit(__I40E_DOWN, &pf->state))
2856                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
2857         }
2858
2859         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
2860                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2861                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
2862         }
2863
2864         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
2865                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
2866                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
2867         }
2868
2869         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
2870                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
2871                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
2872         }
2873
2874         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
2875                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
2876                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
2877                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
2878                 val = rd32(hw, I40E_GLGEN_RSTAT);
2879                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
2880                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
2881                 if (val == I40E_RESET_CORER) {
2882                         pf->corer_count++;
2883                 } else if (val == I40E_RESET_GLOBR) {
2884                         pf->globr_count++;
2885                 } else if (val == I40E_RESET_EMPR) {
2886                         pf->empr_count++;
2887                         set_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
2888                 }
2889         }
2890
2891         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
2892                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
2893                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
2894         }
2895
2896         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
2897                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
2898
2899                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
2900                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2901                         i40e_ptp_tx_hwtstamp(pf);
2902                 }
2903         }
2904
2905         /* If a critical error is pending we have no choice but to reset the
2906          * device.
2907          * Report and mask out any remaining unexpected interrupts.
2908          */
2909         icr0_remaining = icr0 & ena_mask;
2910         if (icr0_remaining) {
2911                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
2912                          icr0_remaining);
2913                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
2914                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
2915                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
2916                         dev_info(&pf->pdev->dev, "device will be reset\n");
2917                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2918                         i40e_service_event_schedule(pf);
2919                 }
2920                 ena_mask &= ~icr0_remaining;
2921         }
2922         ret = IRQ_HANDLED;
2923
2924 enable_intr:
2925         /* re-enable interrupt causes */
2926         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
2927         if (!test_bit(__I40E_DOWN, &pf->state)) {
2928                 i40e_service_event_schedule(pf);
2929                 i40e_irq_dynamic_enable_icr0(pf);
2930         }
2931
2932         return ret;
2933 }
2934
2935 /**
2936  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
2937  * @tx_ring:  tx ring to clean
2938  * @budget:   how many cleans we're allowed
2939  *
2940  * Returns true if there's any budget left (e.g. the clean is finished)
2941  **/
2942 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
2943 {
2944         struct i40e_vsi *vsi = tx_ring->vsi;
2945         u16 i = tx_ring->next_to_clean;
2946         struct i40e_tx_buffer *tx_buf;
2947         struct i40e_tx_desc *tx_desc;
2948
2949         tx_buf = &tx_ring->tx_bi[i];
2950         tx_desc = I40E_TX_DESC(tx_ring, i);
2951         i -= tx_ring->count;
2952
2953         do {
2954                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
2955
2956                 /* if next_to_watch is not set then there is no work pending */
2957                 if (!eop_desc)
2958                         break;
2959
2960                 /* prevent any other reads prior to eop_desc */
2961                 read_barrier_depends();
2962
2963                 /* if the descriptor isn't done, no work yet to do */
2964                 if (!(eop_desc->cmd_type_offset_bsz &
2965                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
2966                         break;
2967
2968                 /* clear next_to_watch to prevent false hangs */
2969                 tx_buf->next_to_watch = NULL;
2970
2971                 /* unmap skb header data */
2972                 dma_unmap_single(tx_ring->dev,
2973                                  dma_unmap_addr(tx_buf, dma),
2974                                  dma_unmap_len(tx_buf, len),
2975                                  DMA_TO_DEVICE);
2976
2977                 dma_unmap_len_set(tx_buf, len, 0);
2978
2979
2980                 /* move to the next desc and buffer to clean */
2981                 tx_buf++;
2982                 tx_desc++;
2983                 i++;
2984                 if (unlikely(!i)) {
2985                         i -= tx_ring->count;
2986                         tx_buf = tx_ring->tx_bi;
2987                         tx_desc = I40E_TX_DESC(tx_ring, 0);
2988                 }
2989
2990                 /* update budget accounting */
2991                 budget--;
2992         } while (likely(budget));
2993
2994         i += tx_ring->count;
2995         tx_ring->next_to_clean = i;
2996
2997         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
2998                 i40e_irq_dynamic_enable(vsi,
2999                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3000         }
3001         return budget > 0;
3002 }
3003
3004 /**
3005  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3006  * @irq: interrupt number
3007  * @data: pointer to a q_vector
3008  **/
3009 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3010 {
3011         struct i40e_q_vector *q_vector = data;
3012         struct i40e_vsi *vsi;
3013
3014         if (!q_vector->tx.ring)
3015                 return IRQ_HANDLED;
3016
3017         vsi = q_vector->tx.ring->vsi;
3018         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3019
3020         return IRQ_HANDLED;
3021 }
3022
3023 /**
3024  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3025  * @vsi: the VSI being configured
3026  * @v_idx: vector index
3027  * @qp_idx: queue pair index
3028  **/
3029 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3030 {
3031         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3032         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3033         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3034
3035         tx_ring->q_vector = q_vector;
3036         tx_ring->next = q_vector->tx.ring;
3037         q_vector->tx.ring = tx_ring;
3038         q_vector->tx.count++;
3039
3040         rx_ring->q_vector = q_vector;
3041         rx_ring->next = q_vector->rx.ring;
3042         q_vector->rx.ring = rx_ring;
3043         q_vector->rx.count++;
3044 }
3045
3046 /**
3047  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3048  * @vsi: the VSI being configured
3049  *
3050  * This function maps descriptor rings to the queue-specific vectors
3051  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3052  * one vector per queue pair, but on a constrained vector budget, we
3053  * group the queue pairs as "efficiently" as possible.
3054  **/
3055 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3056 {
3057         int qp_remaining = vsi->num_queue_pairs;
3058         int q_vectors = vsi->num_q_vectors;
3059         int num_ringpairs;
3060         int v_start = 0;
3061         int qp_idx = 0;
3062
3063         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3064          * group them so there are multiple queues per vector.
3065          */
3066         for (; v_start < q_vectors && qp_remaining; v_start++) {
3067                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3068
3069                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3070
3071                 q_vector->num_ringpairs = num_ringpairs;
3072
3073                 q_vector->rx.count = 0;
3074                 q_vector->tx.count = 0;
3075                 q_vector->rx.ring = NULL;
3076                 q_vector->tx.ring = NULL;
3077
3078                 while (num_ringpairs--) {
3079                         map_vector_to_qp(vsi, v_start, qp_idx);
3080                         qp_idx++;
3081                         qp_remaining--;
3082                 }
3083         }
3084 }
3085
3086 /**
3087  * i40e_vsi_request_irq - Request IRQ from the OS
3088  * @vsi: the VSI being configured
3089  * @basename: name for the vector
3090  **/
3091 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3092 {
3093         struct i40e_pf *pf = vsi->back;
3094         int err;
3095
3096         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3097                 err = i40e_vsi_request_irq_msix(vsi, basename);
3098         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3099                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3100                                   pf->misc_int_name, pf);
3101         else
3102                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3103                                   pf->misc_int_name, pf);
3104
3105         if (err)
3106                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3107
3108         return err;
3109 }
3110
3111 #ifdef CONFIG_NET_POLL_CONTROLLER
3112 /**
3113  * i40e_netpoll - A Polling 'interrupt'handler
3114  * @netdev: network interface device structure
3115  *
3116  * This is used by netconsole to send skbs without having to re-enable
3117  * interrupts.  It's not called while the normal interrupt routine is executing.
3118  **/
3119 static void i40e_netpoll(struct net_device *netdev)
3120 {
3121         struct i40e_netdev_priv *np = netdev_priv(netdev);
3122         struct i40e_vsi *vsi = np->vsi;
3123         struct i40e_pf *pf = vsi->back;
3124         int i;
3125
3126         /* if interface is down do nothing */
3127         if (test_bit(__I40E_DOWN, &vsi->state))
3128                 return;
3129
3130         pf->flags |= I40E_FLAG_IN_NETPOLL;
3131         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3132                 for (i = 0; i < vsi->num_q_vectors; i++)
3133                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3134         } else {
3135                 i40e_intr(pf->pdev->irq, netdev);
3136         }
3137         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3138 }
3139 #endif
3140
3141 /**
3142  * i40e_vsi_control_tx - Start or stop a VSI's rings
3143  * @vsi: the VSI being configured
3144  * @enable: start or stop the rings
3145  **/
3146 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3147 {
3148         struct i40e_pf *pf = vsi->back;
3149         struct i40e_hw *hw = &pf->hw;
3150         int i, j, pf_q;
3151         u32 tx_reg;
3152
3153         pf_q = vsi->base_queue;
3154         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3155                 for (j = 0; j < 50; j++) {
3156                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3157                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3158                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3159                                 break;
3160                         usleep_range(1000, 2000);
3161                 }
3162                 /* Skip if the queue is already in the requested state */
3163                 if (enable && (tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3164                         continue;
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) {
3182                                 if ((tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3183                                         break;
3184                         } else {
3185                                 if (!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3186                                         break;
3187                         }
3188
3189                         udelay(10);
3190                 }
3191                 if (j >= 10) {
3192                         dev_info(&pf->pdev->dev, "Tx ring %d %sable timeout\n",
3193                                  pf_q, (enable ? "en" : "dis"));
3194                         return -ETIMEDOUT;
3195                 }
3196         }
3197
3198         if (hw->revision_id == 0)
3199                 mdelay(50);
3200
3201         return 0;
3202 }
3203
3204 /**
3205  * i40e_vsi_control_rx - Start or stop a VSI's rings
3206  * @vsi: the VSI being configured
3207  * @enable: start or stop the rings
3208  **/
3209 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3210 {
3211         struct i40e_pf *pf = vsi->back;
3212         struct i40e_hw *hw = &pf->hw;
3213         int i, j, pf_q;
3214         u32 rx_reg;
3215
3216         pf_q = vsi->base_queue;
3217         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3218                 for (j = 0; j < 50; j++) {
3219                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3220                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3221                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3222                                 break;
3223                         usleep_range(1000, 2000);
3224                 }
3225
3226                 if (enable) {
3227                         /* is STAT set ? */
3228                         if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3229                                 continue;
3230                 } else {
3231                         /* is !STAT set ? */
3232                         if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3233                                 continue;
3234                 }
3235
3236                 /* turn on/off the queue */
3237                 if (enable)
3238                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3239                 else
3240                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3241                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3242
3243                 /* wait for the change to finish */
3244                 for (j = 0; j < 10; j++) {
3245                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3246
3247                         if (enable) {
3248                                 if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3249                                         break;
3250                         } else {
3251                                 if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3252                                         break;
3253                         }
3254
3255                         udelay(10);
3256                 }
3257                 if (j >= 10) {
3258                         dev_info(&pf->pdev->dev, "Rx ring %d %sable timeout\n",
3259                                  pf_q, (enable ? "en" : "dis"));
3260                         return -ETIMEDOUT;
3261                 }
3262         }
3263
3264         return 0;
3265 }
3266
3267 /**
3268  * i40e_vsi_control_rings - Start or stop a VSI's rings
3269  * @vsi: the VSI being configured
3270  * @enable: start or stop the rings
3271  **/
3272 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3273 {
3274         int ret = 0;
3275
3276         /* do rx first for enable and last for disable */
3277         if (request) {
3278                 ret = i40e_vsi_control_rx(vsi, request);
3279                 if (ret)
3280                         return ret;
3281                 ret = i40e_vsi_control_tx(vsi, request);
3282         } else {
3283                 /* Ignore return value, we need to shutdown whatever we can */
3284                 i40e_vsi_control_tx(vsi, request);
3285                 i40e_vsi_control_rx(vsi, request);
3286         }
3287
3288         return ret;
3289 }
3290
3291 /**
3292  * i40e_vsi_free_irq - Free the irq association with the OS
3293  * @vsi: the VSI being configured
3294  **/
3295 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3296 {
3297         struct i40e_pf *pf = vsi->back;
3298         struct i40e_hw *hw = &pf->hw;
3299         int base = vsi->base_vector;
3300         u32 val, qp;
3301         int i;
3302
3303         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3304                 if (!vsi->q_vectors)
3305                         return;
3306
3307                 for (i = 0; i < vsi->num_q_vectors; i++) {
3308                         u16 vector = i + base;
3309
3310                         /* free only the irqs that were actually requested */
3311                         if (!vsi->q_vectors[i] ||
3312                             !vsi->q_vectors[i]->num_ringpairs)
3313                                 continue;
3314
3315                         /* clear the affinity_mask in the IRQ descriptor */
3316                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3317                                               NULL);
3318                         free_irq(pf->msix_entries[vector].vector,
3319                                  vsi->q_vectors[i]);
3320
3321                         /* Tear down the interrupt queue link list
3322                          *
3323                          * We know that they come in pairs and always
3324                          * the Rx first, then the Tx.  To clear the
3325                          * link list, stick the EOL value into the
3326                          * next_q field of the registers.
3327                          */
3328                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3329                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3330                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3331                         val |= I40E_QUEUE_END_OF_LIST
3332                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3333                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3334
3335                         while (qp != I40E_QUEUE_END_OF_LIST) {
3336                                 u32 next;
3337
3338                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3339
3340                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3341                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3342                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3343                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3344
3345                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3346                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3347
3348                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3349
3350                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3351
3352                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3353                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3354
3355                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3356                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3357                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3358                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3359
3360                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3361                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3362
3363                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3364                                 qp = next;
3365                         }
3366                 }
3367         } else {
3368                 free_irq(pf->pdev->irq, pf);
3369
3370                 val = rd32(hw, I40E_PFINT_LNKLST0);
3371                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3372                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3373                 val |= I40E_QUEUE_END_OF_LIST
3374                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3375                 wr32(hw, I40E_PFINT_LNKLST0, val);
3376
3377                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3378                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3379                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3380                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3381                          I40E_QINT_RQCTL_INTEVENT_MASK);
3382
3383                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3384                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3385
3386                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3387
3388                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3389
3390                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3391                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3392                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3393                          I40E_QINT_TQCTL_INTEVENT_MASK);
3394
3395                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3396                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3397
3398                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3399         }
3400 }
3401
3402 /**
3403  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3404  * @vsi: the VSI being configured
3405  * @v_idx: Index of vector to be freed
3406  *
3407  * This function frees the memory allocated to the q_vector.  In addition if
3408  * NAPI is enabled it will delete any references to the NAPI struct prior
3409  * to freeing the q_vector.
3410  **/
3411 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3412 {
3413         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3414         struct i40e_ring *ring;
3415
3416         if (!q_vector)
3417                 return;
3418
3419         /* disassociate q_vector from rings */
3420         i40e_for_each_ring(ring, q_vector->tx)
3421                 ring->q_vector = NULL;
3422
3423         i40e_for_each_ring(ring, q_vector->rx)
3424                 ring->q_vector = NULL;
3425
3426         /* only VSI w/ an associated netdev is set up w/ NAPI */
3427         if (vsi->netdev)
3428                 netif_napi_del(&q_vector->napi);
3429
3430         vsi->q_vectors[v_idx] = NULL;
3431
3432         kfree_rcu(q_vector, rcu);
3433 }
3434
3435 /**
3436  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3437  * @vsi: the VSI being un-configured
3438  *
3439  * This frees the memory allocated to the q_vectors and
3440  * deletes references to the NAPI struct.
3441  **/
3442 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3443 {
3444         int v_idx;
3445
3446         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3447                 i40e_free_q_vector(vsi, v_idx);
3448 }
3449
3450 /**
3451  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3452  * @pf: board private structure
3453  **/
3454 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3455 {
3456         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3457         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3458                 pci_disable_msix(pf->pdev);
3459                 kfree(pf->msix_entries);
3460                 pf->msix_entries = NULL;
3461         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3462                 pci_disable_msi(pf->pdev);
3463         }
3464         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3465 }
3466
3467 /**
3468  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3469  * @pf: board private structure
3470  *
3471  * We go through and clear interrupt specific resources and reset the structure
3472  * to pre-load conditions
3473  **/
3474 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3475 {
3476         int i;
3477
3478         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3479         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
3480                 if (pf->vsi[i])
3481                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3482         i40e_reset_interrupt_capability(pf);
3483 }
3484
3485 /**
3486  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3487  * @vsi: the VSI being configured
3488  **/
3489 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3490 {
3491         int q_idx;
3492
3493         if (!vsi->netdev)
3494                 return;
3495
3496         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3497                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3498 }
3499
3500 /**
3501  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3502  * @vsi: the VSI being configured
3503  **/
3504 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3505 {
3506         int q_idx;
3507
3508         if (!vsi->netdev)
3509                 return;
3510
3511         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3512                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3513 }
3514
3515 /**
3516  * i40e_quiesce_vsi - Pause a given VSI
3517  * @vsi: the VSI being paused
3518  **/
3519 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3520 {
3521         if (test_bit(__I40E_DOWN, &vsi->state))
3522                 return;
3523
3524         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3525         if (vsi->netdev && netif_running(vsi->netdev)) {
3526                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3527         } else {
3528                 set_bit(__I40E_DOWN, &vsi->state);
3529                 i40e_down(vsi);
3530         }
3531 }
3532
3533 /**
3534  * i40e_unquiesce_vsi - Resume a given VSI
3535  * @vsi: the VSI being resumed
3536  **/
3537 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3538 {
3539         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3540                 return;
3541
3542         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3543         if (vsi->netdev && netif_running(vsi->netdev))
3544                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3545         else
3546                 i40e_up(vsi);   /* this clears the DOWN bit */
3547 }
3548
3549 /**
3550  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3551  * @pf: the PF
3552  **/
3553 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3554 {
3555         int v;
3556
3557         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3558                 if (pf->vsi[v])
3559                         i40e_quiesce_vsi(pf->vsi[v]);
3560         }
3561 }
3562
3563 /**
3564  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3565  * @pf: the PF
3566  **/
3567 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3568 {
3569         int v;
3570
3571         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3572                 if (pf->vsi[v])
3573                         i40e_unquiesce_vsi(pf->vsi[v]);
3574         }
3575 }
3576
3577 /**
3578  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
3579  * @dcbcfg: the corresponding DCBx configuration structure
3580  *
3581  * Return the number of TCs from given DCBx configuration
3582  **/
3583 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
3584 {
3585         u8 num_tc = 0;
3586         int i;
3587
3588         /* Scan the ETS Config Priority Table to find
3589          * traffic class enabled for a given priority
3590          * and use the traffic class index to get the
3591          * number of traffic classes enabled
3592          */
3593         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3594                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
3595                         num_tc = dcbcfg->etscfg.prioritytable[i];
3596         }
3597
3598         /* Traffic class index starts from zero so
3599          * increment to return the actual count
3600          */
3601         return num_tc + 1;
3602 }
3603
3604 /**
3605  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
3606  * @dcbcfg: the corresponding DCBx configuration structure
3607  *
3608  * Query the current DCB configuration and return the number of
3609  * traffic classes enabled from the given DCBX config
3610  **/
3611 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
3612 {
3613         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
3614         u8 enabled_tc = 1;
3615         u8 i;
3616
3617         for (i = 0; i < num_tc; i++)
3618                 enabled_tc |= 1 << i;
3619
3620         return enabled_tc;
3621 }
3622
3623 /**
3624  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
3625  * @pf: PF being queried
3626  *
3627  * Return number of traffic classes enabled for the given PF
3628  **/
3629 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
3630 {
3631         struct i40e_hw *hw = &pf->hw;
3632         u8 i, enabled_tc;
3633         u8 num_tc = 0;
3634         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3635
3636         /* If DCB is not enabled then always in single TC */
3637         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3638                 return 1;
3639
3640         /* MFP mode return count of enabled TCs for this PF */
3641         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3642                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3643                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3644                         if (enabled_tc & (1 << i))
3645                                 num_tc++;
3646                 }
3647                 return num_tc;
3648         }
3649
3650         /* SFP mode will be enabled for all TCs on port */
3651         return i40e_dcb_get_num_tc(dcbcfg);
3652 }
3653
3654 /**
3655  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
3656  * @pf: PF being queried
3657  *
3658  * Return a bitmap for first enabled traffic class for this PF.
3659  **/
3660 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
3661 {
3662         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3663         u8 i = 0;
3664
3665         if (!enabled_tc)
3666                 return 0x1; /* TC0 */
3667
3668         /* Find the first enabled TC */
3669         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3670                 if (enabled_tc & (1 << i))
3671                         break;
3672         }
3673
3674         return 1 << i;
3675 }
3676
3677 /**
3678  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
3679  * @pf: PF being queried
3680  *
3681  * Return a bitmap for enabled traffic classes for this PF.
3682  **/
3683 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
3684 {
3685         /* If DCB is not enabled for this PF then just return default TC */
3686         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3687                 return i40e_pf_get_default_tc(pf);
3688
3689         /* MFP mode will have enabled TCs set by FW */
3690         if (pf->flags & I40E_FLAG_MFP_ENABLED)
3691                 return pf->hw.func_caps.enabled_tcmap;
3692
3693         /* SFP mode we want PF to be enabled for all TCs */
3694         return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
3695 }
3696
3697 /**
3698  * i40e_vsi_get_bw_info - Query VSI BW Information
3699  * @vsi: the VSI being queried
3700  *
3701  * Returns 0 on success, negative value on failure
3702  **/
3703 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
3704 {
3705         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
3706         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
3707         struct i40e_pf *pf = vsi->back;
3708         struct i40e_hw *hw = &pf->hw;
3709         i40e_status aq_ret;
3710         u32 tc_bw_max;
3711         int i;
3712
3713         /* Get the VSI level BW configuration */
3714         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
3715         if (aq_ret) {
3716                 dev_info(&pf->pdev->dev,
3717                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
3718                          aq_ret, pf->hw.aq.asq_last_status);
3719                 return -EINVAL;
3720         }
3721
3722         /* Get the VSI level BW configuration per TC */
3723         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
3724                                                   NULL);
3725         if (aq_ret) {
3726                 dev_info(&pf->pdev->dev,
3727                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
3728                          aq_ret, pf->hw.aq.asq_last_status);
3729                 return -EINVAL;
3730         }
3731
3732         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
3733                 dev_info(&pf->pdev->dev,
3734                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
3735                          bw_config.tc_valid_bits,
3736                          bw_ets_config.tc_valid_bits);
3737                 /* Still continuing */
3738         }
3739
3740         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
3741         vsi->bw_max_quanta = bw_config.max_bw;
3742         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
3743                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
3744         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3745                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
3746                 vsi->bw_ets_limit_credits[i] =
3747                                         le16_to_cpu(bw_ets_config.credits[i]);
3748                 /* 3 bits out of 4 for each TC */
3749                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
3750         }
3751
3752         return 0;
3753 }
3754
3755 /**
3756  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
3757  * @vsi: the VSI being configured
3758  * @enabled_tc: TC bitmap
3759  * @bw_credits: BW shared credits per TC
3760  *
3761  * Returns 0 on success, negative value on failure
3762  **/
3763 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
3764                                        u8 *bw_share)
3765 {
3766         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
3767         i40e_status aq_ret;
3768         int i;
3769
3770         bw_data.tc_valid_bits = enabled_tc;
3771         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3772                 bw_data.tc_bw_credits[i] = bw_share[i];
3773
3774         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
3775                                           NULL);
3776         if (aq_ret) {
3777                 dev_info(&vsi->back->pdev->dev,
3778                          "AQ command Config VSI BW allocation per TC failed = %d\n",
3779                          vsi->back->hw.aq.asq_last_status);
3780                 return -EINVAL;
3781         }
3782
3783         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3784                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
3785
3786         return 0;
3787 }
3788
3789 /**
3790  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
3791  * @vsi: the VSI being configured
3792  * @enabled_tc: TC map to be enabled
3793  *
3794  **/
3795 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3796 {
3797         struct net_device *netdev = vsi->netdev;
3798         struct i40e_pf *pf = vsi->back;
3799         struct i40e_hw *hw = &pf->hw;
3800         u8 netdev_tc = 0;
3801         int i;
3802         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3803
3804         if (!netdev)
3805                 return;
3806
3807         if (!enabled_tc) {
3808                 netdev_reset_tc(netdev);
3809                 return;
3810         }
3811
3812         /* Set up actual enabled TCs on the VSI */
3813         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
3814                 return;
3815
3816         /* set per TC queues for the VSI */
3817         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3818                 /* Only set TC queues for enabled tcs
3819                  *
3820                  * e.g. For a VSI that has TC0 and TC3 enabled the
3821                  * enabled_tc bitmap would be 0x00001001; the driver
3822                  * will set the numtc for netdev as 2 that will be
3823                  * referenced by the netdev layer as TC 0 and 1.
3824                  */
3825                 if (vsi->tc_config.enabled_tc & (1 << i))
3826                         netdev_set_tc_queue(netdev,
3827                                         vsi->tc_config.tc_info[i].netdev_tc,
3828                                         vsi->tc_config.tc_info[i].qcount,
3829                                         vsi->tc_config.tc_info[i].qoffset);
3830         }
3831
3832         /* Assign UP2TC map for the VSI */
3833         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3834                 /* Get the actual TC# for the UP */
3835                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
3836                 /* Get the mapped netdev TC# for the UP */
3837                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
3838                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
3839         }
3840 }
3841
3842 /**
3843  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
3844  * @vsi: the VSI being configured
3845  * @ctxt: the ctxt buffer returned from AQ VSI update param command
3846  **/
3847 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
3848                                       struct i40e_vsi_context *ctxt)
3849 {
3850         /* copy just the sections touched not the entire info
3851          * since not all sections are valid as returned by
3852          * update vsi params
3853          */
3854         vsi->info.mapping_flags = ctxt->info.mapping_flags;
3855         memcpy(&vsi->info.queue_mapping,
3856                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
3857         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
3858                sizeof(vsi->info.tc_mapping));
3859 }
3860
3861 /**
3862  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
3863  * @vsi: VSI to be configured
3864  * @enabled_tc: TC bitmap
3865  *
3866  * This configures a particular VSI for TCs that are mapped to the
3867  * given TC bitmap. It uses default bandwidth share for TCs across
3868  * VSIs to configure TC for a particular VSI.
3869  *
3870  * NOTE:
3871  * It is expected that the VSI queues have been quisced before calling
3872  * this function.
3873  **/
3874 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3875 {
3876         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
3877         struct i40e_vsi_context ctxt;
3878         int ret = 0;
3879         int i;
3880
3881         /* Check if enabled_tc is same as existing or new TCs */
3882         if (vsi->tc_config.enabled_tc == enabled_tc)
3883                 return ret;
3884
3885         /* Enable ETS TCs with equal BW Share for now across all VSIs */
3886         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3887                 if (enabled_tc & (1 << i))
3888                         bw_share[i] = 1;
3889         }
3890
3891         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
3892         if (ret) {
3893                 dev_info(&vsi->back->pdev->dev,
3894                          "Failed configuring TC map %d for VSI %d\n",
3895                          enabled_tc, vsi->seid);
3896                 goto out;
3897         }
3898
3899         /* Update Queue Pairs Mapping for currently enabled UPs */
3900         ctxt.seid = vsi->seid;
3901         ctxt.pf_num = vsi->back->hw.pf_id;
3902         ctxt.vf_num = 0;
3903         ctxt.uplink_seid = vsi->uplink_seid;
3904         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
3905         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
3906
3907         /* Update the VSI after updating the VSI queue-mapping information */
3908         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
3909         if (ret) {
3910                 dev_info(&vsi->back->pdev->dev,
3911                          "update vsi failed, aq_err=%d\n",
3912                          vsi->back->hw.aq.asq_last_status);
3913                 goto out;
3914         }
3915         /* update the local VSI info with updated queue map */
3916         i40e_vsi_update_queue_map(vsi, &ctxt);
3917         vsi->info.valid_sections = 0;
3918
3919         /* Update current VSI BW information */
3920         ret = i40e_vsi_get_bw_info(vsi);
3921         if (ret) {
3922                 dev_info(&vsi->back->pdev->dev,
3923                          "Failed updating vsi bw info, aq_err=%d\n",
3924                          vsi->back->hw.aq.asq_last_status);
3925                 goto out;
3926         }
3927
3928         /* Update the netdev TC setup */
3929         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
3930 out:
3931         return ret;
3932 }
3933
3934 /**
3935  * i40e_veb_config_tc - Configure TCs for given VEB
3936  * @veb: given VEB
3937  * @enabled_tc: TC bitmap
3938  *
3939  * Configures given TC bitmap for VEB (switching) element
3940  **/
3941 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
3942 {
3943         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
3944         struct i40e_pf *pf = veb->pf;
3945         int ret = 0;
3946         int i;
3947
3948         /* No TCs or already enabled TCs just return */
3949         if (!enabled_tc || veb->enabled_tc == enabled_tc)
3950                 return ret;
3951
3952         bw_data.tc_valid_bits = enabled_tc;
3953         /* bw_data.absolute_credits is not set (relative) */
3954
3955         /* Enable ETS TCs with equal BW Share for now */
3956         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3957                 if (enabled_tc & (1 << i))
3958                         bw_data.tc_bw_share_credits[i] = 1;
3959         }
3960
3961         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
3962                                                    &bw_data, NULL);
3963         if (ret) {
3964                 dev_info(&pf->pdev->dev,
3965                          "veb bw config failed, aq_err=%d\n",
3966                          pf->hw.aq.asq_last_status);
3967                 goto out;
3968         }
3969
3970         /* Update the BW information */
3971         ret = i40e_veb_get_bw_info(veb);
3972         if (ret) {
3973                 dev_info(&pf->pdev->dev,
3974                          "Failed getting veb bw config, aq_err=%d\n",
3975                          pf->hw.aq.asq_last_status);
3976         }
3977
3978 out:
3979         return ret;
3980 }
3981
3982 #ifdef CONFIG_I40E_DCB
3983 /**
3984  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
3985  * @pf: PF struct
3986  *
3987  * Reconfigure VEB/VSIs on a given PF; it is assumed that
3988  * the caller would've quiesce all the VSIs before calling
3989  * this function
3990  **/
3991 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
3992 {
3993         u8 tc_map = 0;
3994         int ret;
3995         u8 v;
3996
3997         /* Enable the TCs available on PF to all VEBs */
3998         tc_map = i40e_pf_get_tc_map(pf);
3999         for (v = 0; v < I40E_MAX_VEB; v++) {
4000                 if (!pf->veb[v])
4001                         continue;
4002                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4003                 if (ret) {
4004                         dev_info(&pf->pdev->dev,
4005                                  "Failed configuring TC for VEB seid=%d\n",
4006                                  pf->veb[v]->seid);
4007                         /* Will try to configure as many components */
4008                 }
4009         }
4010
4011         /* Update each VSI */
4012         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4013                 if (!pf->vsi[v])
4014                         continue;
4015
4016                 /* - Enable all TCs for the LAN VSI
4017                  * - For all others keep them at TC0 for now
4018                  */
4019                 if (v == pf->lan_vsi)
4020                         tc_map = i40e_pf_get_tc_map(pf);
4021                 else
4022                         tc_map = i40e_pf_get_default_tc(pf);
4023
4024                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4025                 if (ret) {
4026                         dev_info(&pf->pdev->dev,
4027                                  "Failed configuring TC for VSI seid=%d\n",
4028                                  pf->vsi[v]->seid);
4029                         /* Will try to configure as many components */
4030                 } else {
4031                         if (pf->vsi[v]->netdev)
4032                                 i40e_dcbnl_set_all(pf->vsi[v]);
4033                 }
4034         }
4035 }
4036
4037 /**
4038  * i40e_init_pf_dcb - Initialize DCB configuration
4039  * @pf: PF being configured
4040  *
4041  * Query the current DCB configuration and cache it
4042  * in the hardware structure
4043  **/
4044 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4045 {
4046         struct i40e_hw *hw = &pf->hw;
4047         int err = 0;
4048
4049         if (pf->hw.func_caps.npar_enable)
4050                 goto out;
4051
4052         /* Get the initial DCB configuration */
4053         err = i40e_init_dcb(hw);
4054         if (!err) {
4055                 /* Device/Function is not DCBX capable */
4056                 if ((!hw->func_caps.dcb) ||
4057                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4058                         dev_info(&pf->pdev->dev,
4059                                  "DCBX offload is not supported or is disabled for this PF.\n");
4060
4061                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4062                                 goto out;
4063
4064                 } else {
4065                         /* When status is not DISABLED then DCBX in FW */
4066                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4067                                        DCB_CAP_DCBX_VER_IEEE;
4068                         pf->flags |= I40E_FLAG_DCB_ENABLED;
4069                 }
4070         }
4071
4072 out:
4073         return err;
4074 }
4075 #endif /* CONFIG_I40E_DCB */
4076
4077 /**
4078  * i40e_up_complete - Finish the last steps of bringing up a connection
4079  * @vsi: the VSI being configured
4080  **/
4081 static int i40e_up_complete(struct i40e_vsi *vsi)
4082 {
4083         struct i40e_pf *pf = vsi->back;
4084         int err;
4085
4086         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4087                 i40e_vsi_configure_msix(vsi);
4088         else
4089                 i40e_configure_msi_and_legacy(vsi);
4090
4091         /* start rings */
4092         err = i40e_vsi_control_rings(vsi, true);
4093         if (err)
4094                 return err;
4095
4096         clear_bit(__I40E_DOWN, &vsi->state);
4097         i40e_napi_enable_all(vsi);
4098         i40e_vsi_enable_irq(vsi);
4099
4100         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4101             (vsi->netdev)) {
4102                 netdev_info(vsi->netdev, "NIC Link is Up\n");
4103                 netif_tx_start_all_queues(vsi->netdev);
4104                 netif_carrier_on(vsi->netdev);
4105         } else if (vsi->netdev) {
4106                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4107         }
4108
4109         /* replay FDIR SB filters */
4110         if (vsi->type == I40E_VSI_FDIR)
4111                 i40e_fdir_filter_restore(vsi);
4112         i40e_service_event_schedule(pf);
4113
4114         return 0;
4115 }
4116
4117 /**
4118  * i40e_vsi_reinit_locked - Reset the VSI
4119  * @vsi: the VSI being configured
4120  *
4121  * Rebuild the ring structs after some configuration
4122  * has changed, e.g. MTU size.
4123  **/
4124 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4125 {
4126         struct i40e_pf *pf = vsi->back;
4127
4128         WARN_ON(in_interrupt());
4129         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4130                 usleep_range(1000, 2000);
4131         i40e_down(vsi);
4132
4133         /* Give a VF some time to respond to the reset.  The
4134          * two second wait is based upon the watchdog cycle in
4135          * the VF driver.
4136          */
4137         if (vsi->type == I40E_VSI_SRIOV)
4138                 msleep(2000);
4139         i40e_up(vsi);
4140         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4141 }
4142
4143 /**
4144  * i40e_up - Bring the connection back up after being down
4145  * @vsi: the VSI being configured
4146  **/
4147 int i40e_up(struct i40e_vsi *vsi)
4148 {
4149         int err;
4150
4151         err = i40e_vsi_configure(vsi);
4152         if (!err)
4153                 err = i40e_up_complete(vsi);
4154
4155         return err;
4156 }
4157
4158 /**
4159  * i40e_down - Shutdown the connection processing
4160  * @vsi: the VSI being stopped
4161  **/
4162 void i40e_down(struct i40e_vsi *vsi)
4163 {
4164         int i;
4165
4166         /* It is assumed that the caller of this function
4167          * sets the vsi->state __I40E_DOWN bit.
4168          */
4169         if (vsi->netdev) {
4170                 netif_carrier_off(vsi->netdev);
4171                 netif_tx_disable(vsi->netdev);
4172         }
4173         i40e_vsi_disable_irq(vsi);
4174         i40e_vsi_control_rings(vsi, false);
4175         i40e_napi_disable_all(vsi);
4176
4177         for (i = 0; i < vsi->num_queue_pairs; i++) {
4178                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4179                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4180         }
4181 }
4182
4183 /**
4184  * i40e_setup_tc - configure multiple traffic classes
4185  * @netdev: net device to configure
4186  * @tc: number of traffic classes to enable
4187  **/
4188 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4189 {
4190         struct i40e_netdev_priv *np = netdev_priv(netdev);
4191         struct i40e_vsi *vsi = np->vsi;
4192         struct i40e_pf *pf = vsi->back;
4193         u8 enabled_tc = 0;
4194         int ret = -EINVAL;
4195         int i;
4196
4197         /* Check if DCB enabled to continue */
4198         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4199                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4200                 goto exit;
4201         }
4202
4203         /* Check if MFP enabled */
4204         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4205                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4206                 goto exit;
4207         }
4208
4209         /* Check whether tc count is within enabled limit */
4210         if (tc > i40e_pf_get_num_tc(pf)) {
4211                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4212                 goto exit;
4213         }
4214
4215         /* Generate TC map for number of tc requested */
4216         for (i = 0; i < tc; i++)
4217                 enabled_tc |= (1 << i);
4218
4219         /* Requesting same TC configuration as already enabled */
4220         if (enabled_tc == vsi->tc_config.enabled_tc)
4221                 return 0;
4222
4223         /* Quiesce VSI queues */
4224         i40e_quiesce_vsi(vsi);
4225
4226         /* Configure VSI for enabled TCs */
4227         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4228         if (ret) {
4229                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4230                             vsi->seid);
4231                 goto exit;
4232         }
4233
4234         /* Unquiesce VSI */
4235         i40e_unquiesce_vsi(vsi);
4236
4237 exit:
4238         return ret;
4239 }
4240
4241 /**
4242  * i40e_open - Called when a network interface is made active
4243  * @netdev: network interface device structure
4244  *
4245  * The open entry point is called when a network interface is made
4246  * active by the system (IFF_UP).  At this point all resources needed
4247  * for transmit and receive operations are allocated, the interrupt
4248  * handler is registered with the OS, the netdev watchdog subtask is
4249  * enabled, and the stack is notified that the interface is ready.
4250  *
4251  * Returns 0 on success, negative value on failure
4252  **/
4253 static int i40e_open(struct net_device *netdev)
4254 {
4255         struct i40e_netdev_priv *np = netdev_priv(netdev);
4256         struct i40e_vsi *vsi = np->vsi;
4257         struct i40e_pf *pf = vsi->back;
4258         int err;
4259
4260         /* disallow open during test or if eeprom is broken */
4261         if (test_bit(__I40E_TESTING, &pf->state) ||
4262             test_bit(__I40E_BAD_EEPROM, &pf->state))
4263                 return -EBUSY;
4264
4265         netif_carrier_off(netdev);
4266
4267         err = i40e_vsi_open(vsi);
4268         if (err)
4269                 return err;
4270
4271         /* configure global TSO hardware offload settings */
4272         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4273                                                        TCP_FLAG_FIN) >> 16);
4274         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4275                                                        TCP_FLAG_FIN |
4276                                                        TCP_FLAG_CWR) >> 16);
4277         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4278
4279 #ifdef CONFIG_I40E_VXLAN
4280         vxlan_get_rx_port(netdev);
4281 #endif
4282
4283         return 0;
4284 }
4285
4286 /**
4287  * i40e_vsi_open -
4288  * @vsi: the VSI to open
4289  *
4290  * Finish initialization of the VSI.
4291  *
4292  * Returns 0 on success, negative value on failure
4293  **/
4294 int i40e_vsi_open(struct i40e_vsi *vsi)
4295 {
4296         struct i40e_pf *pf = vsi->back;
4297         char int_name[IFNAMSIZ];
4298         int err;
4299
4300         /* allocate descriptors */
4301         err = i40e_vsi_setup_tx_resources(vsi);
4302         if (err)
4303                 goto err_setup_tx;
4304         err = i40e_vsi_setup_rx_resources(vsi);
4305         if (err)
4306                 goto err_setup_rx;
4307
4308         err = i40e_vsi_configure(vsi);
4309         if (err)
4310                 goto err_setup_rx;
4311
4312         if (!vsi->netdev) {
4313                 err = EINVAL;
4314                 goto err_setup_rx;
4315         }
4316         snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4317                  dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4318         err = i40e_vsi_request_irq(vsi, int_name);
4319         if (err)
4320                 goto err_setup_rx;
4321
4322         /* Notify the stack of the actual queue counts. */
4323         err = netif_set_real_num_tx_queues(vsi->netdev, vsi->num_queue_pairs);
4324         if (err)
4325                 goto err_set_queues;
4326
4327         err = netif_set_real_num_rx_queues(vsi->netdev, vsi->num_queue_pairs);
4328         if (err)
4329                 goto err_set_queues;
4330
4331         err = i40e_up_complete(vsi);
4332         if (err)
4333                 goto err_up_complete;
4334
4335         return 0;
4336
4337 err_up_complete:
4338         i40e_down(vsi);
4339 err_set_queues:
4340         i40e_vsi_free_irq(vsi);
4341 err_setup_rx:
4342         i40e_vsi_free_rx_resources(vsi);
4343 err_setup_tx:
4344         i40e_vsi_free_tx_resources(vsi);
4345         if (vsi == pf->vsi[pf->lan_vsi])
4346                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4347
4348         return err;
4349 }
4350
4351 /**
4352  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4353  * @pf: Pointer to pf
4354  *
4355  * This function destroys the hlist where all the Flow Director
4356  * filters were saved.
4357  **/
4358 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4359 {
4360         struct i40e_fdir_filter *filter;
4361         struct hlist_node *node2;
4362
4363         hlist_for_each_entry_safe(filter, node2,
4364                                   &pf->fdir_filter_list, fdir_node) {
4365                 hlist_del(&filter->fdir_node);
4366                 kfree(filter);
4367         }
4368         pf->fdir_pf_active_filters = 0;
4369 }
4370
4371 /**
4372  * i40e_close - Disables a network interface
4373  * @netdev: network interface device structure
4374  *
4375  * The close entry point is called when an interface is de-activated
4376  * by the OS.  The hardware is still under the driver's control, but
4377  * this netdev interface is disabled.
4378  *
4379  * Returns 0, this is not allowed to fail
4380  **/
4381 static int i40e_close(struct net_device *netdev)
4382 {
4383         struct i40e_netdev_priv *np = netdev_priv(netdev);
4384         struct i40e_vsi *vsi = np->vsi;
4385
4386         if (test_and_set_bit(__I40E_DOWN, &vsi->state))
4387                 return 0;
4388
4389         i40e_down(vsi);
4390         i40e_vsi_free_irq(vsi);
4391
4392         i40e_vsi_free_tx_resources(vsi);
4393         i40e_vsi_free_rx_resources(vsi);
4394
4395         return 0;
4396 }
4397
4398 /**
4399  * i40e_do_reset - Start a PF or Core Reset sequence
4400  * @pf: board private structure
4401  * @reset_flags: which reset is requested
4402  *
4403  * The essential difference in resets is that the PF Reset
4404  * doesn't clear the packet buffers, doesn't reset the PE
4405  * firmware, and doesn't bother the other PFs on the chip.
4406  **/
4407 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
4408 {
4409         u32 val;
4410
4411         WARN_ON(in_interrupt());
4412
4413         /* do the biggest reset indicated */
4414         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
4415
4416                 /* Request a Global Reset
4417                  *
4418                  * This will start the chip's countdown to the actual full
4419                  * chip reset event, and a warning interrupt to be sent
4420                  * to all PFs, including the requestor.  Our handler
4421                  * for the warning interrupt will deal with the shutdown
4422                  * and recovery of the switch setup.
4423                  */
4424                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
4425                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4426                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
4427                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4428
4429         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
4430
4431                 /* Request a Core Reset
4432                  *
4433                  * Same as Global Reset, except does *not* include the MAC/PHY
4434                  */
4435                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
4436                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4437                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
4438                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4439                 i40e_flush(&pf->hw);
4440
4441         } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
4442
4443                 /* Request a Firmware Reset
4444                  *
4445                  * Same as Global reset, plus restarting the
4446                  * embedded firmware engine.
4447                  */
4448                 /* enable EMP Reset */
4449                 val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
4450                 val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
4451                 wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
4452
4453                 /* force the reset */
4454                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4455                 val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
4456                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4457                 i40e_flush(&pf->hw);
4458
4459         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
4460
4461                 /* Request a PF Reset
4462                  *
4463                  * Resets only the PF-specific registers
4464                  *
4465                  * This goes directly to the tear-down and rebuild of
4466                  * the switch, since we need to do all the recovery as
4467                  * for the Core Reset.
4468                  */
4469                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
4470                 i40e_handle_reset_warning(pf);
4471
4472         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
4473                 int v;
4474
4475                 /* Find the VSI(s) that requested a re-init */
4476                 dev_info(&pf->pdev->dev,
4477                          "VSI reinit requested\n");
4478                 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4479                         struct i40e_vsi *vsi = pf->vsi[v];
4480                         if (vsi != NULL &&
4481                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
4482                                 i40e_vsi_reinit_locked(pf->vsi[v]);
4483                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
4484                         }
4485                 }
4486
4487                 /* no further action needed, so return now */
4488                 return;
4489         } else {
4490                 dev_info(&pf->pdev->dev,
4491                          "bad reset request 0x%08x\n", reset_flags);
4492                 return;
4493         }
4494 }
4495
4496 #ifdef CONFIG_I40E_DCB
4497 /**
4498  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
4499  * @pf: board private structure
4500  * @old_cfg: current DCB config
4501  * @new_cfg: new DCB config
4502  **/
4503 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
4504                             struct i40e_dcbx_config *old_cfg,
4505                             struct i40e_dcbx_config *new_cfg)
4506 {
4507         bool need_reconfig = false;
4508
4509         /* Check if ETS configuration has changed */
4510         if (memcmp(&new_cfg->etscfg,
4511                    &old_cfg->etscfg,
4512                    sizeof(new_cfg->etscfg))) {
4513                 /* If Priority Table has changed reconfig is needed */
4514                 if (memcmp(&new_cfg->etscfg.prioritytable,
4515                            &old_cfg->etscfg.prioritytable,
4516                            sizeof(new_cfg->etscfg.prioritytable))) {
4517                         need_reconfig = true;
4518                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
4519                 }
4520
4521                 if (memcmp(&new_cfg->etscfg.tcbwtable,
4522                            &old_cfg->etscfg.tcbwtable,
4523                            sizeof(new_cfg->etscfg.tcbwtable)))
4524                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
4525
4526                 if (memcmp(&new_cfg->etscfg.tsatable,
4527                            &old_cfg->etscfg.tsatable,
4528                            sizeof(new_cfg->etscfg.tsatable)))
4529                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
4530         }
4531
4532         /* Check if PFC configuration has changed */
4533         if (memcmp(&new_cfg->pfc,
4534                    &old_cfg->pfc,
4535                    sizeof(new_cfg->pfc))) {
4536                 need_reconfig = true;
4537                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
4538         }
4539
4540         /* Check if APP Table has changed */
4541         if (memcmp(&new_cfg->app,
4542                    &old_cfg->app,
4543                    sizeof(new_cfg->app))) {
4544                 need_reconfig = true;
4545                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
4546         }
4547
4548         return need_reconfig;
4549 }
4550
4551 /**
4552  * i40e_handle_lldp_event - Handle LLDP Change MIB event
4553  * @pf: board private structure
4554  * @e: event info posted on ARQ
4555  **/
4556 static int i40e_handle_lldp_event(struct i40e_pf *pf,
4557                                   struct i40e_arq_event_info *e)
4558 {
4559         struct i40e_aqc_lldp_get_mib *mib =
4560                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
4561         struct i40e_hw *hw = &pf->hw;
4562         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
4563         struct i40e_dcbx_config tmp_dcbx_cfg;
4564         bool need_reconfig = false;
4565         int ret = 0;
4566         u8 type;
4567
4568         /* Ignore if event is not for Nearest Bridge */
4569         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
4570                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
4571         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
4572                 return ret;
4573
4574         /* Check MIB Type and return if event for Remote MIB update */
4575         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
4576         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
4577                 /* Update the remote cached instance and return */
4578                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
4579                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
4580                                 &hw->remote_dcbx_config);
4581                 goto exit;
4582         }
4583
4584         /* Convert/store the DCBX data from LLDPDU temporarily */
4585         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
4586         ret = i40e_lldp_to_dcb_config(e->msg_buf, &tmp_dcbx_cfg);
4587         if (ret) {
4588                 /* Error in LLDPDU parsing return */
4589                 dev_info(&pf->pdev->dev, "Failed parsing LLDPDU from event buffer\n");
4590                 goto exit;
4591         }
4592
4593         /* No change detected in DCBX configs */
4594         if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
4595                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
4596                 goto exit;
4597         }
4598
4599         need_reconfig = i40e_dcb_need_reconfig(pf, dcbx_cfg, &tmp_dcbx_cfg);
4600
4601         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg);
4602
4603         /* Overwrite the new configuration */
4604         *dcbx_cfg = tmp_dcbx_cfg;
4605
4606         if (!need_reconfig)
4607                 goto exit;
4608
4609         /* Reconfiguration needed quiesce all VSIs */
4610         i40e_pf_quiesce_all_vsi(pf);
4611
4612         /* Changes in configuration update VEB/VSI */
4613         i40e_dcb_reconfigure(pf);
4614
4615         i40e_pf_unquiesce_all_vsi(pf);
4616 exit:
4617         return ret;
4618 }
4619 #endif /* CONFIG_I40E_DCB */
4620
4621 /**
4622  * i40e_do_reset_safe - Protected reset path for userland calls.
4623  * @pf: board private structure
4624  * @reset_flags: which reset is requested
4625  *
4626  **/
4627 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
4628 {
4629         rtnl_lock();
4630         i40e_do_reset(pf, reset_flags);
4631         rtnl_unlock();
4632 }
4633
4634 /**
4635  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
4636  * @pf: board private structure
4637  * @e: event info posted on ARQ
4638  *
4639  * Handler for LAN Queue Overflow Event generated by the firmware for PF
4640  * and VF queues
4641  **/
4642 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
4643                                            struct i40e_arq_event_info *e)
4644 {
4645         struct i40e_aqc_lan_overflow *data =
4646                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
4647         u32 queue = le32_to_cpu(data->prtdcb_rupto);
4648         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
4649         struct i40e_hw *hw = &pf->hw;
4650         struct i40e_vf *vf;
4651         u16 vf_id;
4652
4653         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
4654                 queue, qtx_ctl);
4655
4656         /* Queue belongs to VF, find the VF and issue VF reset */
4657         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
4658             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
4659                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
4660                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
4661                 vf_id -= hw->func_caps.vf_base_id;
4662                 vf = &pf->vf[vf_id];
4663                 i40e_vc_notify_vf_reset(vf);
4664                 /* Allow VF to process pending reset notification */
4665                 msleep(20);
4666                 i40e_reset_vf(vf, false);
4667         }
4668 }
4669
4670 /**
4671  * i40e_service_event_complete - Finish up the service event
4672  * @pf: board private structure
4673  **/
4674 static void i40e_service_event_complete(struct i40e_pf *pf)
4675 {
4676         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
4677
4678         /* flush memory to make sure state is correct before next watchog */
4679         smp_mb__before_clear_bit();
4680         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
4681 }
4682
4683 /**
4684  * i40e_get_current_fd_count - Get the count of FD filters programmed in the HW
4685  * @pf: board private structure
4686  **/
4687 int i40e_get_current_fd_count(struct i40e_pf *pf)
4688 {
4689         int val, fcnt_prog;
4690         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
4691         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
4692                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
4693                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
4694         return fcnt_prog;
4695 }
4696
4697 /**
4698  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
4699  * @pf: board private structure
4700  **/
4701 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
4702 {
4703         u32 fcnt_prog, fcnt_avail;
4704
4705         /* Check if, FD SB or ATR was auto disabled and if there is enough room
4706          * to re-enable
4707          */
4708         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4709             (pf->flags & I40E_FLAG_FD_SB_ENABLED))
4710                 return;
4711         fcnt_prog = i40e_get_current_fd_count(pf);
4712         fcnt_avail = pf->hw.fdir_shared_filter_count +
4713                                                pf->fdir_pf_filter_count;
4714         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) {
4715                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
4716                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
4717                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
4718                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
4719                 }
4720         }
4721         /* Wait for some more space to be available to turn on ATR */
4722         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
4723                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4724                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
4725                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4726                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
4727                 }
4728         }
4729 }
4730
4731 /**
4732  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
4733  * @pf: board private structure
4734  **/
4735 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
4736 {
4737         if (!(pf->flags & I40E_FLAG_FDIR_REQUIRES_REINIT))
4738                 return;
4739
4740         /* if interface is down do nothing */
4741         if (test_bit(__I40E_DOWN, &pf->state))
4742                 return;
4743         i40e_fdir_check_and_reenable(pf);
4744
4745         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4746             (pf->flags & I40E_FLAG_FD_SB_ENABLED))
4747                 pf->flags &= ~I40E_FLAG_FDIR_REQUIRES_REINIT;
4748 }
4749
4750 /**
4751  * i40e_vsi_link_event - notify VSI of a link event
4752  * @vsi: vsi to be notified
4753  * @link_up: link up or down
4754  **/
4755 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
4756 {
4757         if (!vsi)
4758                 return;
4759
4760         switch (vsi->type) {
4761         case I40E_VSI_MAIN:
4762                 if (!vsi->netdev || !vsi->netdev_registered)
4763                         break;
4764
4765                 if (link_up) {
4766                         netif_carrier_on(vsi->netdev);
4767                         netif_tx_wake_all_queues(vsi->netdev);
4768                 } else {
4769                         netif_carrier_off(vsi->netdev);
4770                         netif_tx_stop_all_queues(vsi->netdev);
4771                 }
4772                 break;
4773
4774         case I40E_VSI_SRIOV:
4775                 break;
4776
4777         case I40E_VSI_VMDQ2:
4778         case I40E_VSI_CTRL:
4779         case I40E_VSI_MIRROR:
4780         default:
4781                 /* there is no notification for other VSIs */
4782                 break;
4783         }
4784 }
4785
4786 /**
4787  * i40e_veb_link_event - notify elements on the veb of a link event
4788  * @veb: veb to be notified
4789  * @link_up: link up or down
4790  **/
4791 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
4792 {
4793         struct i40e_pf *pf;
4794         int i;
4795
4796         if (!veb || !veb->pf)
4797                 return;
4798         pf = veb->pf;
4799
4800         /* depth first... */
4801         for (i = 0; i < I40E_MAX_VEB; i++)
4802                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
4803                         i40e_veb_link_event(pf->veb[i], link_up);
4804
4805         /* ... now the local VSIs */
4806         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4807                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
4808                         i40e_vsi_link_event(pf->vsi[i], link_up);
4809 }
4810
4811 /**
4812  * i40e_link_event - Update netif_carrier status
4813  * @pf: board private structure
4814  **/
4815 static void i40e_link_event(struct i40e_pf *pf)
4816 {
4817         bool new_link, old_link;
4818
4819         new_link = (pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP);
4820         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
4821
4822         if (new_link == old_link)
4823                 return;
4824
4825         if (!test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state))
4826                 netdev_info(pf->vsi[pf->lan_vsi]->netdev,
4827                             "NIC Link is %s\n", (new_link ? "Up" : "Down"));
4828
4829         /* Notify the base of the switch tree connected to
4830          * the link.  Floating VEBs are not notified.
4831          */
4832         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
4833                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
4834         else
4835                 i40e_vsi_link_event(pf->vsi[pf->lan_vsi], new_link);
4836
4837         if (pf->vf)
4838                 i40e_vc_notify_link_state(pf);
4839
4840         if (pf->flags & I40E_FLAG_PTP)
4841                 i40e_ptp_set_increment(pf);
4842 }
4843
4844 /**
4845  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
4846  * @pf: board private structure
4847  *
4848  * Set the per-queue flags to request a check for stuck queues in the irq
4849  * clean functions, then force interrupts to be sure the irq clean is called.
4850  **/
4851 static void i40e_check_hang_subtask(struct i40e_pf *pf)
4852 {
4853         int i, v;
4854
4855         /* If we're down or resetting, just bail */
4856         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
4857                 return;
4858
4859         /* for each VSI/netdev
4860          *     for each Tx queue
4861          *         set the check flag
4862          *     for each q_vector
4863          *         force an interrupt
4864          */
4865         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4866                 struct i40e_vsi *vsi = pf->vsi[v];
4867                 int armed = 0;
4868
4869                 if (!pf->vsi[v] ||
4870                     test_bit(__I40E_DOWN, &vsi->state) ||
4871                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
4872                         continue;
4873
4874                 for (i = 0; i < vsi->num_queue_pairs; i++) {
4875                         set_check_for_tx_hang(vsi->tx_rings[i]);
4876                         if (test_bit(__I40E_HANG_CHECK_ARMED,
4877                                      &vsi->tx_rings[i]->state))
4878                                 armed++;
4879                 }
4880
4881                 if (armed) {
4882                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
4883                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
4884                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
4885                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
4886                         } else {
4887                                 u16 vec = vsi->base_vector - 1;
4888                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
4889                                            I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
4890                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
4891                                         wr32(&vsi->back->hw,
4892                                              I40E_PFINT_DYN_CTLN(vec), val);
4893                         }
4894                         i40e_flush(&vsi->back->hw);
4895                 }
4896         }
4897 }
4898
4899 /**
4900  * i40e_watchdog_subtask - Check and bring link up
4901  * @pf: board private structure
4902  **/
4903 static void i40e_watchdog_subtask(struct i40e_pf *pf)
4904 {
4905         int i;
4906
4907         /* if interface is down do nothing */
4908         if (test_bit(__I40E_DOWN, &pf->state) ||
4909             test_bit(__I40E_CONFIG_BUSY, &pf->state))
4910                 return;
4911
4912         /* Update the stats for active netdevs so the network stack
4913          * can look at updated numbers whenever it cares to
4914          */
4915         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4916                 if (pf->vsi[i] && pf->vsi[i]->netdev)
4917                         i40e_update_stats(pf->vsi[i]);
4918
4919         /* Update the stats for the active switching components */
4920         for (i = 0; i < I40E_MAX_VEB; i++)
4921                 if (pf->veb[i])
4922                         i40e_update_veb_stats(pf->veb[i]);
4923
4924         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
4925 }
4926
4927 /**
4928  * i40e_reset_subtask - Set up for resetting the device and driver
4929  * @pf: board private structure
4930  **/
4931 static void i40e_reset_subtask(struct i40e_pf *pf)
4932 {
4933         u32 reset_flags = 0;
4934
4935         rtnl_lock();
4936         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
4937                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
4938                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
4939         }
4940         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
4941                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
4942                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4943         }
4944         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
4945                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
4946                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
4947         }
4948         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
4949                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
4950                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
4951         }
4952
4953         /* If there's a recovery already waiting, it takes
4954          * precedence before starting a new reset sequence.
4955          */
4956         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
4957                 i40e_handle_reset_warning(pf);
4958                 goto unlock;
4959         }
4960
4961         /* If we're already down or resetting, just bail */
4962         if (reset_flags &&
4963             !test_bit(__I40E_DOWN, &pf->state) &&
4964             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
4965                 i40e_do_reset(pf, reset_flags);
4966
4967 unlock:
4968         rtnl_unlock();
4969 }
4970
4971 /**
4972  * i40e_handle_link_event - Handle link event
4973  * @pf: board private structure
4974  * @e: event info posted on ARQ
4975  **/
4976 static void i40e_handle_link_event(struct i40e_pf *pf,
4977                                    struct i40e_arq_event_info *e)
4978 {
4979         struct i40e_hw *hw = &pf->hw;
4980         struct i40e_aqc_get_link_status *status =
4981                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
4982         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
4983
4984         /* save off old link status information */
4985         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
4986                sizeof(pf->hw.phy.link_info_old));
4987
4988         /* update link status */
4989         hw_link_info->phy_type = (enum i40e_aq_phy_type)status->phy_type;
4990         hw_link_info->link_speed = (enum i40e_aq_link_speed)status->link_speed;
4991         hw_link_info->link_info = status->link_info;
4992         hw_link_info->an_info = status->an_info;
4993         hw_link_info->ext_info = status->ext_info;
4994         hw_link_info->lse_enable =
4995                 le16_to_cpu(status->command_flags) &
4996                             I40E_AQ_LSE_ENABLE;
4997
4998         /* process the event */
4999         i40e_link_event(pf);
5000
5001         /* Do a new status request to re-enable LSE reporting
5002          * and load new status information into the hw struct,
5003          * then see if the status changed while processing the
5004          * initial event.
5005          */
5006         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
5007         i40e_link_event(pf);
5008 }
5009
5010 /**
5011  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5012  * @pf: board private structure
5013  **/
5014 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5015 {
5016         struct i40e_arq_event_info event;
5017         struct i40e_hw *hw = &pf->hw;
5018         u16 pending, i = 0;
5019         i40e_status ret;
5020         u16 opcode;
5021         u32 val;
5022
5023         if (!test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state))
5024                 return;
5025
5026         event.msg_size = I40E_MAX_AQ_BUF_SIZE;
5027         event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
5028         if (!event.msg_buf)
5029                 return;
5030
5031         do {
5032                 event.msg_size = I40E_MAX_AQ_BUF_SIZE; /* reinit each time */
5033                 ret = i40e_clean_arq_element(hw, &event, &pending);
5034                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK) {
5035                         dev_info(&pf->pdev->dev, "No ARQ event found\n");
5036                         break;
5037                 } else if (ret) {
5038                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5039                         break;
5040                 }
5041
5042                 opcode = le16_to_cpu(event.desc.opcode);
5043                 switch (opcode) {
5044
5045                 case i40e_aqc_opc_get_link_status:
5046                         i40e_handle_link_event(pf, &event);
5047                         break;
5048                 case i40e_aqc_opc_send_msg_to_pf:
5049                         ret = i40e_vc_process_vf_msg(pf,
5050                                         le16_to_cpu(event.desc.retval),
5051                                         le32_to_cpu(event.desc.cookie_high),
5052                                         le32_to_cpu(event.desc.cookie_low),
5053                                         event.msg_buf,
5054                                         event.msg_size);
5055                         break;
5056                 case i40e_aqc_opc_lldp_update_mib:
5057                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5058 #ifdef CONFIG_I40E_DCB
5059                         rtnl_lock();
5060                         ret = i40e_handle_lldp_event(pf, &event);
5061                         rtnl_unlock();
5062 #endif /* CONFIG_I40E_DCB */
5063                         break;
5064                 case i40e_aqc_opc_event_lan_overflow:
5065                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5066                         i40e_handle_lan_overflow_event(pf, &event);
5067                         break;
5068                 case i40e_aqc_opc_send_msg_to_peer:
5069                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5070                         break;
5071                 default:
5072                         dev_info(&pf->pdev->dev,
5073                                  "ARQ Error: Unknown event 0x%04x received\n",
5074                                  opcode);
5075                         break;
5076                 }
5077         } while (pending && (i++ < pf->adminq_work_limit));
5078
5079         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5080         /* re-enable Admin queue interrupt cause */
5081         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5082         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5083         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5084         i40e_flush(hw);
5085
5086         kfree(event.msg_buf);
5087 }
5088
5089 /**
5090  * i40e_verify_eeprom - make sure eeprom is good to use
5091  * @pf: board private structure
5092  **/
5093 static void i40e_verify_eeprom(struct i40e_pf *pf)
5094 {
5095         int err;
5096
5097         err = i40e_diag_eeprom_test(&pf->hw);
5098         if (err) {
5099                 /* retry in case of garbage read */
5100                 err = i40e_diag_eeprom_test(&pf->hw);
5101                 if (err) {
5102                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5103                                  err);
5104                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5105                 }
5106         }
5107
5108         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5109                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5110                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5111         }
5112 }
5113
5114 /**
5115  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5116  * @veb: pointer to the VEB instance
5117  *
5118  * This is a recursive function that first builds the attached VSIs then
5119  * recurses in to build the next layer of VEB.  We track the connections
5120  * through our own index numbers because the seid's from the HW could
5121  * change across the reset.
5122  **/
5123 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5124 {
5125         struct i40e_vsi *ctl_vsi = NULL;
5126         struct i40e_pf *pf = veb->pf;
5127         int v, veb_idx;
5128         int ret;
5129
5130         /* build VSI that owns this VEB, temporarily attached to base VEB */
5131         for (v = 0; v < pf->hw.func_caps.num_vsis && !ctl_vsi; v++) {
5132                 if (pf->vsi[v] &&
5133                     pf->vsi[v]->veb_idx == veb->idx &&
5134                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5135                         ctl_vsi = pf->vsi[v];
5136                         break;
5137                 }
5138         }
5139         if (!ctl_vsi) {
5140                 dev_info(&pf->pdev->dev,
5141                          "missing owner VSI for veb_idx %d\n", veb->idx);
5142                 ret = -ENOENT;
5143                 goto end_reconstitute;
5144         }
5145         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5146                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5147         ret = i40e_add_vsi(ctl_vsi);
5148         if (ret) {
5149                 dev_info(&pf->pdev->dev,
5150                          "rebuild of owner VSI failed: %d\n", ret);
5151                 goto end_reconstitute;
5152         }
5153         i40e_vsi_reset_stats(ctl_vsi);
5154
5155         /* create the VEB in the switch and move the VSI onto the VEB */
5156         ret = i40e_add_veb(veb, ctl_vsi);
5157         if (ret)
5158                 goto end_reconstitute;
5159
5160         /* create the remaining VSIs attached to this VEB */
5161         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
5162                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5163                         continue;
5164
5165                 if (pf->vsi[v]->veb_idx == veb->idx) {
5166                         struct i40e_vsi *vsi = pf->vsi[v];
5167                         vsi->uplink_seid = veb->seid;
5168                         ret = i40e_add_vsi(vsi);
5169                         if (ret) {
5170                                 dev_info(&pf->pdev->dev,
5171                                          "rebuild of vsi_idx %d failed: %d\n",
5172                                          v, ret);
5173                                 goto end_reconstitute;
5174                         }
5175                         i40e_vsi_reset_stats(vsi);
5176                 }
5177         }
5178
5179         /* create any VEBs attached to this VEB - RECURSION */
5180         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5181                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5182                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5183                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5184                         if (ret)
5185                                 break;
5186                 }
5187         }
5188
5189 end_reconstitute:
5190         return ret;
5191 }
5192
5193 /**
5194  * i40e_get_capabilities - get info about the HW
5195  * @pf: the PF struct
5196  **/
5197 static int i40e_get_capabilities(struct i40e_pf *pf)
5198 {
5199         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5200         u16 data_size;
5201         int buf_len;
5202         int err;
5203
5204         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5205         do {
5206                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5207                 if (!cap_buf)
5208                         return -ENOMEM;
5209
5210                 /* this loads the data into the hw struct for us */
5211                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5212                                             &data_size,
5213                                             i40e_aqc_opc_list_func_capabilities,
5214                                             NULL);
5215                 /* data loaded, buffer no longer needed */
5216                 kfree(cap_buf);
5217
5218                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
5219                         /* retry with a larger buffer */
5220                         buf_len = data_size;
5221                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
5222                         dev_info(&pf->pdev->dev,
5223                                  "capability discovery failed: aq=%d\n",
5224                                  pf->hw.aq.asq_last_status);
5225                         return -ENODEV;
5226                 }
5227         } while (err);
5228
5229         /* increment MSI-X count because current FW skips one */
5230         pf->hw.func_caps.num_msix_vectors++;
5231
5232         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
5233             (pf->hw.aq.fw_maj_ver < 2)) {
5234                 pf->hw.func_caps.num_msix_vectors++;
5235                 pf->hw.func_caps.num_msix_vectors_vf++;
5236         }
5237
5238         if (pf->hw.debug_mask & I40E_DEBUG_USER)
5239                 dev_info(&pf->pdev->dev,
5240                          "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",
5241                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
5242                          pf->hw.func_caps.num_msix_vectors,
5243                          pf->hw.func_caps.num_msix_vectors_vf,
5244                          pf->hw.func_caps.fd_filters_guaranteed,
5245                          pf->hw.func_caps.fd_filters_best_effort,
5246                          pf->hw.func_caps.num_tx_qp,
5247                          pf->hw.func_caps.num_vsis);
5248
5249 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
5250                        + pf->hw.func_caps.num_vfs)
5251         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
5252                 dev_info(&pf->pdev->dev,
5253                          "got num_vsis %d, setting num_vsis to %d\n",
5254                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
5255                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
5256         }
5257
5258         return 0;
5259 }
5260
5261 static int i40e_vsi_clear(struct i40e_vsi *vsi);
5262
5263 /**
5264  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
5265  * @pf: board private structure
5266  **/
5267 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
5268 {
5269         struct i40e_vsi *vsi;
5270         bool new_vsi = false;
5271         int err, i;
5272
5273         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
5274                 return;
5275
5276         /* find existing VSI and see if it needs configuring */
5277         vsi = NULL;
5278         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
5279                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5280                         vsi = pf->vsi[i];
5281                         break;
5282                 }
5283         }
5284
5285         /* create a new VSI if none exists */
5286         if (!vsi) {
5287                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
5288                                      pf->vsi[pf->lan_vsi]->seid, 0);
5289                 if (!vsi) {
5290                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
5291                         goto err_vsi;
5292                 }
5293                 new_vsi = true;
5294         }
5295         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
5296
5297         err = i40e_vsi_setup_tx_resources(vsi);
5298         if (err)
5299                 goto err_setup_tx;
5300         err = i40e_vsi_setup_rx_resources(vsi);
5301         if (err)
5302                 goto err_setup_rx;
5303
5304         if (new_vsi) {
5305                 char int_name[IFNAMSIZ + 9];
5306                 err = i40e_vsi_configure(vsi);
5307                 if (err)
5308                         goto err_setup_rx;
5309                 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
5310                          dev_driver_string(&pf->pdev->dev));
5311                 err = i40e_vsi_request_irq(vsi, int_name);
5312                 if (err)
5313                         goto err_setup_rx;
5314                 err = i40e_up_complete(vsi);
5315                 if (err)
5316                         goto err_up_complete;
5317                 clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
5318         }
5319
5320         return;
5321
5322 err_up_complete:
5323         i40e_down(vsi);
5324         i40e_vsi_free_irq(vsi);
5325 err_setup_rx:
5326         i40e_vsi_free_rx_resources(vsi);
5327 err_setup_tx:
5328         i40e_vsi_free_tx_resources(vsi);
5329 err_vsi:
5330         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
5331         i40e_vsi_clear(vsi);
5332 }
5333
5334 /**
5335  * i40e_fdir_teardown - release the Flow Director resources
5336  * @pf: board private structure
5337  **/
5338 static void i40e_fdir_teardown(struct i40e_pf *pf)
5339 {
5340         int i;
5341
5342         i40e_fdir_filter_exit(pf);
5343         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
5344                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5345                         i40e_vsi_release(pf->vsi[i]);
5346                         break;
5347                 }
5348         }
5349 }
5350
5351 /**
5352  * i40e_prep_for_reset - prep for the core to reset
5353  * @pf: board private structure
5354  *
5355  * Close up the VFs and other things in prep for pf Reset.
5356   **/
5357 static int i40e_prep_for_reset(struct i40e_pf *pf)
5358 {
5359         struct i40e_hw *hw = &pf->hw;
5360         i40e_status ret;
5361         u32 v;
5362
5363         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
5364         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
5365                 return 0;
5366
5367         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
5368
5369         if (i40e_check_asq_alive(hw))
5370                 i40e_vc_notify_reset(pf);
5371
5372         /* quiesce the VSIs and their queues that are not already DOWN */
5373         i40e_pf_quiesce_all_vsi(pf);
5374
5375         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
5376                 if (pf->vsi[v])
5377                         pf->vsi[v]->seid = 0;
5378         }
5379
5380         i40e_shutdown_adminq(&pf->hw);
5381
5382         /* call shutdown HMC */
5383         ret = i40e_shutdown_lan_hmc(hw);
5384         if (ret) {
5385                 dev_info(&pf->pdev->dev, "shutdown_lan_hmc failed: %d\n", ret);
5386                 clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
5387         }
5388         return ret;
5389 }
5390
5391 /**
5392  * i40e_reset_and_rebuild - reset and rebuild using a saved config
5393  * @pf: board private structure
5394  * @reinit: if the Main VSI needs to re-initialized.
5395  **/
5396 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
5397 {
5398         struct i40e_driver_version dv;
5399         struct i40e_hw *hw = &pf->hw;
5400         i40e_status ret;
5401         u32 v;
5402
5403         /* Now we wait for GRST to settle out.
5404          * We don't have to delete the VEBs or VSIs from the hw switch
5405          * because the reset will make them disappear.
5406          */
5407         ret = i40e_pf_reset(hw);
5408         if (ret)
5409                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
5410         pf->pfr_count++;
5411
5412         if (test_bit(__I40E_DOWN, &pf->state))
5413                 goto end_core_reset;
5414         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
5415
5416         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
5417         ret = i40e_init_adminq(&pf->hw);
5418         if (ret) {
5419                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
5420                 goto end_core_reset;
5421         }
5422
5423         /* re-verify the eeprom if we just had an EMP reset */
5424         if (test_bit(__I40E_EMP_RESET_REQUESTED, &pf->state)) {
5425                 clear_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
5426                 i40e_verify_eeprom(pf);
5427         }
5428
5429         ret = i40e_get_capabilities(pf);
5430         if (ret) {
5431                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
5432                          ret);
5433                 goto end_core_reset;
5434         }
5435
5436         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
5437                                 hw->func_caps.num_rx_qp,
5438                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
5439         if (ret) {
5440                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
5441                 goto end_core_reset;
5442         }
5443         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
5444         if (ret) {
5445                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
5446                 goto end_core_reset;
5447         }
5448
5449 #ifdef CONFIG_I40E_DCB
5450         ret = i40e_init_pf_dcb(pf);
5451         if (ret) {
5452                 dev_info(&pf->pdev->dev, "init_pf_dcb failed: %d\n", ret);
5453                 goto end_core_reset;
5454         }
5455 #endif /* CONFIG_I40E_DCB */
5456
5457         /* do basic switch setup */
5458         ret = i40e_setup_pf_switch(pf, reinit);
5459         if (ret)
5460                 goto end_core_reset;
5461
5462         /* Rebuild the VSIs and VEBs that existed before reset.
5463          * They are still in our local switch element arrays, so only
5464          * need to rebuild the switch model in the HW.
5465          *
5466          * If there were VEBs but the reconstitution failed, we'll try
5467          * try to recover minimal use by getting the basic PF VSI working.
5468          */
5469         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
5470                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
5471                 /* find the one VEB connected to the MAC, and find orphans */
5472                 for (v = 0; v < I40E_MAX_VEB; v++) {
5473                         if (!pf->veb[v])
5474                                 continue;
5475
5476                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
5477                             pf->veb[v]->uplink_seid == 0) {
5478                                 ret = i40e_reconstitute_veb(pf->veb[v]);
5479
5480                                 if (!ret)
5481                                         continue;
5482
5483                                 /* If Main VEB failed, we're in deep doodoo,
5484                                  * so give up rebuilding the switch and set up
5485                                  * for minimal rebuild of PF VSI.
5486                                  * If orphan failed, we'll report the error
5487                                  * but try to keep going.
5488                                  */
5489                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
5490                                         dev_info(&pf->pdev->dev,
5491                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
5492                                                  ret);
5493                                         pf->vsi[pf->lan_vsi]->uplink_seid
5494                                                                 = pf->mac_seid;
5495                                         break;
5496                                 } else if (pf->veb[v]->uplink_seid == 0) {
5497                                         dev_info(&pf->pdev->dev,
5498                                                  "rebuild of orphan VEB failed: %d\n",
5499                                                  ret);
5500                                 }
5501                         }
5502                 }
5503         }
5504
5505         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
5506                 dev_info(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
5507                 /* no VEB, so rebuild only the Main VSI */
5508                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
5509                 if (ret) {
5510                         dev_info(&pf->pdev->dev,
5511                                  "rebuild of Main VSI failed: %d\n", ret);
5512                         goto end_core_reset;
5513                 }
5514         }
5515
5516         /* reinit the misc interrupt */
5517         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5518                 ret = i40e_setup_misc_vector(pf);
5519
5520         /* restart the VSIs that were rebuilt and running before the reset */
5521         i40e_pf_unquiesce_all_vsi(pf);
5522
5523         if (pf->num_alloc_vfs) {
5524                 for (v = 0; v < pf->num_alloc_vfs; v++)
5525                         i40e_reset_vf(&pf->vf[v], true);
5526         }
5527
5528         /* tell the firmware that we're starting */
5529         dv.major_version = DRV_VERSION_MAJOR;
5530         dv.minor_version = DRV_VERSION_MINOR;
5531         dv.build_version = DRV_VERSION_BUILD;
5532         dv.subbuild_version = 0;
5533         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
5534
5535         dev_info(&pf->pdev->dev, "reset complete\n");
5536
5537 end_core_reset:
5538         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
5539 }
5540
5541 /**
5542  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
5543  * @pf: board private structure
5544  *
5545  * Close up the VFs and other things in prep for a Core Reset,
5546  * then get ready to rebuild the world.
5547  **/
5548 static void i40e_handle_reset_warning(struct i40e_pf *pf)
5549 {
5550         i40e_status ret;
5551
5552         ret = i40e_prep_for_reset(pf);
5553         if (!ret)
5554                 i40e_reset_and_rebuild(pf, false);
5555 }
5556
5557 /**
5558  * i40e_handle_mdd_event
5559  * @pf: pointer to the pf structure
5560  *
5561  * Called from the MDD irq handler to identify possibly malicious vfs
5562  **/
5563 static void i40e_handle_mdd_event(struct i40e_pf *pf)
5564 {
5565         struct i40e_hw *hw = &pf->hw;
5566         bool mdd_detected = false;
5567         struct i40e_vf *vf;
5568         u32 reg;
5569         int i;
5570
5571         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
5572                 return;
5573
5574         /* find what triggered the MDD event */
5575         reg = rd32(hw, I40E_GL_MDET_TX);
5576         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
5577                 u8 func = (reg & I40E_GL_MDET_TX_FUNCTION_MASK)
5578                                 >> I40E_GL_MDET_TX_FUNCTION_SHIFT;
5579                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_SHIFT)
5580                                 >> I40E_GL_MDET_TX_EVENT_SHIFT;
5581                 u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK)
5582                                 >> I40E_GL_MDET_TX_QUEUE_SHIFT;
5583                 dev_info(&pf->pdev->dev,
5584                          "Malicious Driver Detection event 0x%02x on TX queue %d of function 0x%02x\n",
5585                          event, queue, func);
5586                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
5587                 mdd_detected = true;
5588         }
5589         reg = rd32(hw, I40E_GL_MDET_RX);
5590         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
5591                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK)
5592                                 >> I40E_GL_MDET_RX_FUNCTION_SHIFT;
5593                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_SHIFT)
5594                                 >> I40E_GL_MDET_RX_EVENT_SHIFT;
5595                 u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK)
5596                                 >> I40E_GL_MDET_RX_QUEUE_SHIFT;
5597                 dev_info(&pf->pdev->dev,
5598                          "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
5599                          event, queue, func);
5600                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
5601                 mdd_detected = true;
5602         }
5603
5604         /* see if one of the VFs needs its hand slapped */
5605         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
5606                 vf = &(pf->vf[i]);
5607                 reg = rd32(hw, I40E_VP_MDET_TX(i));
5608                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
5609                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
5610                         vf->num_mdd_events++;
5611                         dev_info(&pf->pdev->dev, "MDD TX event on VF %d\n", i);
5612                 }
5613
5614                 reg = rd32(hw, I40E_VP_MDET_RX(i));
5615                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
5616                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
5617                         vf->num_mdd_events++;
5618                         dev_info(&pf->pdev->dev, "MDD RX event on VF %d\n", i);
5619                 }
5620
5621                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
5622                         dev_info(&pf->pdev->dev,
5623                                  "Too many MDD events on VF %d, disabled\n", i);
5624                         dev_info(&pf->pdev->dev,
5625                                  "Use PF Control I/F to re-enable the VF\n");
5626                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
5627                 }
5628         }
5629
5630         /* re-enable mdd interrupt cause */
5631         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
5632         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
5633         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
5634         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
5635         i40e_flush(hw);
5636 }
5637
5638 #ifdef CONFIG_I40E_VXLAN
5639 /**
5640  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
5641  * @pf: board private structure
5642  **/
5643 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
5644 {
5645         const int vxlan_hdr_qwords = 4;
5646         struct i40e_hw *hw = &pf->hw;
5647         i40e_status ret;
5648         u8 filter_index;
5649         __be16 port;
5650         int i;
5651
5652         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
5653                 return;
5654
5655         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
5656
5657         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
5658                 if (pf->pending_vxlan_bitmap & (1 << i)) {
5659                         pf->pending_vxlan_bitmap &= ~(1 << i);
5660                         port = pf->vxlan_ports[i];
5661                         ret = port ?
5662                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
5663                                                      vxlan_hdr_qwords,
5664                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
5665                                                      &filter_index, NULL)
5666                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
5667
5668                         if (ret) {
5669                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
5670                                          port ? "adding" : "deleting",
5671                                          ntohs(port), port ? i : i);
5672
5673                                 pf->vxlan_ports[i] = 0;
5674                         } else {
5675                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
5676                                          port ? "Added" : "Deleted",
5677                                          ntohs(port), port ? i : filter_index);
5678                         }
5679                 }
5680         }
5681 }
5682
5683 #endif
5684 /**
5685  * i40e_service_task - Run the driver's async subtasks
5686  * @work: pointer to work_struct containing our data
5687  **/
5688 static void i40e_service_task(struct work_struct *work)
5689 {
5690         struct i40e_pf *pf = container_of(work,
5691                                           struct i40e_pf,
5692                                           service_task);
5693         unsigned long start_time = jiffies;
5694
5695         i40e_reset_subtask(pf);
5696         i40e_handle_mdd_event(pf);
5697         i40e_vc_process_vflr_event(pf);
5698         i40e_watchdog_subtask(pf);
5699         i40e_fdir_reinit_subtask(pf);
5700         i40e_check_hang_subtask(pf);
5701         i40e_sync_filters_subtask(pf);
5702 #ifdef CONFIG_I40E_VXLAN
5703         i40e_sync_vxlan_filters_subtask(pf);
5704 #endif
5705         i40e_clean_adminq_subtask(pf);
5706
5707         i40e_service_event_complete(pf);
5708
5709         /* If the tasks have taken longer than one timer cycle or there
5710          * is more work to be done, reschedule the service task now
5711          * rather than wait for the timer to tick again.
5712          */
5713         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
5714             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
5715             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
5716             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
5717                 i40e_service_event_schedule(pf);
5718 }
5719
5720 /**
5721  * i40e_service_timer - timer callback
5722  * @data: pointer to PF struct
5723  **/
5724 static void i40e_service_timer(unsigned long data)
5725 {
5726         struct i40e_pf *pf = (struct i40e_pf *)data;
5727
5728         mod_timer(&pf->service_timer,
5729                   round_jiffies(jiffies + pf->service_timer_period));
5730         i40e_service_event_schedule(pf);
5731 }
5732
5733 /**
5734  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
5735  * @vsi: the VSI being configured
5736  **/
5737 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
5738 {
5739         struct i40e_pf *pf = vsi->back;
5740
5741         switch (vsi->type) {
5742         case I40E_VSI_MAIN:
5743                 vsi->alloc_queue_pairs = pf->num_lan_qps;
5744                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5745                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5746                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5747                         vsi->num_q_vectors = pf->num_lan_msix;
5748                 else
5749                         vsi->num_q_vectors = 1;
5750
5751                 break;
5752
5753         case I40E_VSI_FDIR:
5754                 vsi->alloc_queue_pairs = 1;
5755                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
5756                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5757                 vsi->num_q_vectors = 1;
5758                 break;
5759
5760         case I40E_VSI_VMDQ2:
5761                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
5762                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5763                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5764                 vsi->num_q_vectors = pf->num_vmdq_msix;
5765                 break;
5766
5767         case I40E_VSI_SRIOV:
5768                 vsi->alloc_queue_pairs = pf->num_vf_qps;
5769                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5770                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5771                 break;
5772
5773         default:
5774                 WARN_ON(1);
5775                 return -ENODATA;
5776         }
5777
5778         return 0;
5779 }
5780
5781 /**
5782  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
5783  * @type: VSI pointer
5784  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
5785  *
5786  * On error: returns error code (negative)
5787  * On success: returns 0
5788  **/
5789 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
5790 {
5791         int size;
5792         int ret = 0;
5793
5794         /* allocate memory for both Tx and Rx ring pointers */
5795         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
5796         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
5797         if (!vsi->tx_rings)
5798                 return -ENOMEM;
5799         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
5800
5801         if (alloc_qvectors) {
5802                 /* allocate memory for q_vector pointers */
5803                 size = sizeof(struct i40e_q_vectors *) * vsi->num_q_vectors;
5804                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
5805                 if (!vsi->q_vectors) {
5806                         ret = -ENOMEM;
5807                         goto err_vectors;
5808                 }
5809         }
5810         return ret;
5811
5812 err_vectors:
5813         kfree(vsi->tx_rings);
5814         return ret;
5815 }
5816
5817 /**
5818  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
5819  * @pf: board private structure
5820  * @type: type of VSI
5821  *
5822  * On error: returns error code (negative)
5823  * On success: returns vsi index in PF (positive)
5824  **/
5825 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
5826 {
5827         int ret = -ENODEV;
5828         struct i40e_vsi *vsi;
5829         int vsi_idx;
5830         int i;
5831
5832         /* Need to protect the allocation of the VSIs at the PF level */
5833         mutex_lock(&pf->switch_mutex);
5834
5835         /* VSI list may be fragmented if VSI creation/destruction has
5836          * been happening.  We can afford to do a quick scan to look
5837          * for any free VSIs in the list.
5838          *
5839          * find next empty vsi slot, looping back around if necessary
5840          */
5841         i = pf->next_vsi;
5842         while (i < pf->hw.func_caps.num_vsis && pf->vsi[i])
5843                 i++;
5844         if (i >= pf->hw.func_caps.num_vsis) {
5845                 i = 0;
5846                 while (i < pf->next_vsi && pf->vsi[i])
5847                         i++;
5848         }
5849
5850         if (i < pf->hw.func_caps.num_vsis && !pf->vsi[i]) {
5851                 vsi_idx = i;             /* Found one! */
5852         } else {
5853                 ret = -ENODEV;
5854                 goto unlock_pf;  /* out of VSI slots! */
5855         }
5856         pf->next_vsi = ++i;
5857
5858         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
5859         if (!vsi) {
5860                 ret = -ENOMEM;
5861                 goto unlock_pf;
5862         }
5863         vsi->type = type;
5864         vsi->back = pf;
5865         set_bit(__I40E_DOWN, &vsi->state);
5866         vsi->flags = 0;
5867         vsi->idx = vsi_idx;
5868         vsi->rx_itr_setting = pf->rx_itr_default;
5869         vsi->tx_itr_setting = pf->tx_itr_default;
5870         vsi->netdev_registered = false;
5871         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
5872         INIT_LIST_HEAD(&vsi->mac_filter_list);
5873
5874         ret = i40e_set_num_rings_in_vsi(vsi);
5875         if (ret)
5876                 goto err_rings;
5877
5878         ret = i40e_vsi_alloc_arrays(vsi, true);
5879         if (ret)
5880                 goto err_rings;
5881
5882         /* Setup default MSIX irq handler for VSI */
5883         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
5884
5885         pf->vsi[vsi_idx] = vsi;
5886         ret = vsi_idx;
5887         goto unlock_pf;
5888
5889 err_rings:
5890         pf->next_vsi = i - 1;
5891         kfree(vsi);
5892 unlock_pf:
5893         mutex_unlock(&pf->switch_mutex);
5894         return ret;
5895 }
5896
5897 /**
5898  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
5899  * @type: VSI pointer
5900  * @free_qvectors: a bool to specify if q_vectors need to be freed.
5901  *
5902  * On error: returns error code (negative)
5903  * On success: returns 0
5904  **/
5905 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
5906 {
5907         /* free the ring and vector containers */
5908         if (free_qvectors) {
5909                 kfree(vsi->q_vectors);
5910                 vsi->q_vectors = NULL;
5911         }
5912         kfree(vsi->tx_rings);
5913         vsi->tx_rings = NULL;
5914         vsi->rx_rings = NULL;
5915 }
5916
5917 /**
5918  * i40e_vsi_clear - Deallocate the VSI provided
5919  * @vsi: the VSI being un-configured
5920  **/
5921 static int i40e_vsi_clear(struct i40e_vsi *vsi)
5922 {
5923         struct i40e_pf *pf;
5924
5925         if (!vsi)
5926                 return 0;
5927
5928         if (!vsi->back)
5929                 goto free_vsi;
5930         pf = vsi->back;
5931
5932         mutex_lock(&pf->switch_mutex);
5933         if (!pf->vsi[vsi->idx]) {
5934                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
5935                         vsi->idx, vsi->idx, vsi, vsi->type);
5936                 goto unlock_vsi;
5937         }
5938
5939         if (pf->vsi[vsi->idx] != vsi) {
5940                 dev_err(&pf->pdev->dev,
5941                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
5942                         pf->vsi[vsi->idx]->idx,
5943                         pf->vsi[vsi->idx],
5944                         pf->vsi[vsi->idx]->type,
5945                         vsi->idx, vsi, vsi->type);
5946                 goto unlock_vsi;
5947         }
5948
5949         /* updates the pf for this cleared vsi */
5950         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
5951         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
5952
5953         i40e_vsi_free_arrays(vsi, true);
5954
5955         pf->vsi[vsi->idx] = NULL;
5956         if (vsi->idx < pf->next_vsi)
5957                 pf->next_vsi = vsi->idx;
5958
5959 unlock_vsi:
5960         mutex_unlock(&pf->switch_mutex);
5961 free_vsi:
5962         kfree(vsi);
5963
5964         return 0;
5965 }
5966
5967 /**
5968  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
5969  * @vsi: the VSI being cleaned
5970  **/
5971 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
5972 {
5973         int i;
5974
5975         if (vsi->tx_rings && vsi->tx_rings[0]) {
5976                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
5977                         kfree_rcu(vsi->tx_rings[i], rcu);
5978                         vsi->tx_rings[i] = NULL;
5979                         vsi->rx_rings[i] = NULL;
5980                 }
5981         }
5982 }
5983
5984 /**
5985  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
5986  * @vsi: the VSI being configured
5987  **/
5988 static int i40e_alloc_rings(struct i40e_vsi *vsi)
5989 {
5990         struct i40e_pf *pf = vsi->back;
5991         int i;
5992
5993         /* Set basic values in the rings to be used later during open() */
5994         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
5995                 struct i40e_ring *tx_ring;
5996                 struct i40e_ring *rx_ring;
5997
5998                 /* allocate space for both Tx and Rx in one shot */
5999                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6000                 if (!tx_ring)
6001                         goto err_out;
6002
6003                 tx_ring->queue_index = i;
6004                 tx_ring->reg_idx = vsi->base_queue + i;
6005                 tx_ring->ring_active = false;
6006                 tx_ring->vsi = vsi;
6007                 tx_ring->netdev = vsi->netdev;
6008                 tx_ring->dev = &pf->pdev->dev;
6009                 tx_ring->count = vsi->num_desc;
6010                 tx_ring->size = 0;
6011                 tx_ring->dcb_tc = 0;
6012                 vsi->tx_rings[i] = tx_ring;
6013
6014                 rx_ring = &tx_ring[1];
6015                 rx_ring->queue_index = i;
6016                 rx_ring->reg_idx = vsi->base_queue + i;
6017                 rx_ring->ring_active = false;
6018                 rx_ring->vsi = vsi;
6019                 rx_ring->netdev = vsi->netdev;
6020                 rx_ring->dev = &pf->pdev->dev;
6021                 rx_ring->count = vsi->num_desc;
6022                 rx_ring->size = 0;
6023                 rx_ring->dcb_tc = 0;
6024                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6025                         set_ring_16byte_desc_enabled(rx_ring);
6026                 else
6027                         clear_ring_16byte_desc_enabled(rx_ring);
6028                 vsi->rx_rings[i] = rx_ring;
6029         }
6030
6031         return 0;
6032
6033 err_out:
6034         i40e_vsi_clear_rings(vsi);
6035         return -ENOMEM;
6036 }
6037
6038 /**
6039  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6040  * @pf: board private structure
6041  * @vectors: the number of MSI-X vectors to request
6042  *
6043  * Returns the number of vectors reserved, or error
6044  **/
6045 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6046 {
6047         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6048                                         I40E_MIN_MSIX, vectors);
6049         if (vectors < 0) {
6050                 dev_info(&pf->pdev->dev,
6051                          "MSI-X vector reservation failed: %d\n", vectors);
6052                 vectors = 0;
6053         }
6054
6055         pf->num_msix_entries = vectors;
6056
6057         return vectors;
6058 }
6059
6060 /**
6061  * i40e_init_msix - Setup the MSIX capability
6062  * @pf: board private structure
6063  *
6064  * Work with the OS to set up the MSIX vectors needed.
6065  *
6066  * Returns 0 on success, negative on failure
6067  **/
6068 static int i40e_init_msix(struct i40e_pf *pf)
6069 {
6070         i40e_status err = 0;
6071         struct i40e_hw *hw = &pf->hw;
6072         int v_budget, i;
6073         int vec;
6074
6075         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6076                 return -ENODEV;
6077
6078         /* The number of vectors we'll request will be comprised of:
6079          *   - Add 1 for "other" cause for Admin Queue events, etc.
6080          *   - The number of LAN queue pairs
6081          *      - Queues being used for RSS.
6082          *              We don't need as many as max_rss_size vectors.
6083          *              use rss_size instead in the calculation since that
6084          *              is governed by number of cpus in the system.
6085          *      - assumes symmetric Tx/Rx pairing
6086          *   - The number of VMDq pairs
6087          * Once we count this up, try the request.
6088          *
6089          * If we can't get what we want, we'll simplify to nearly nothing
6090          * and try again.  If that still fails, we punt.
6091          */
6092         pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
6093         pf->num_vmdq_msix = pf->num_vmdq_qps;
6094         v_budget = 1 + pf->num_lan_msix;
6095         v_budget += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6096         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6097                 v_budget++;
6098
6099         /* Scale down if necessary, and the rings will share vectors */
6100         v_budget = min_t(int, v_budget, hw->func_caps.num_msix_vectors);
6101
6102         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6103                                    GFP_KERNEL);
6104         if (!pf->msix_entries)
6105                 return -ENOMEM;
6106
6107         for (i = 0; i < v_budget; i++)
6108                 pf->msix_entries[i].entry = i;
6109         vec = i40e_reserve_msix_vectors(pf, v_budget);
6110         if (vec < I40E_MIN_MSIX) {
6111                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6112                 kfree(pf->msix_entries);
6113                 pf->msix_entries = NULL;
6114                 return -ENODEV;
6115
6116         } else if (vec == I40E_MIN_MSIX) {
6117                 /* Adjust for minimal MSIX use */
6118                 dev_info(&pf->pdev->dev, "Features disabled, not enough MSI-X vectors\n");
6119                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
6120                 pf->num_vmdq_vsis = 0;
6121                 pf->num_vmdq_qps = 0;
6122                 pf->num_vmdq_msix = 0;
6123                 pf->num_lan_qps = 1;
6124                 pf->num_lan_msix = 1;
6125
6126         } else if (vec != v_budget) {
6127                 /* Scale vector usage down */
6128                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
6129                 vec--;                    /* reserve the misc vector */
6130
6131                 /* partition out the remaining vectors */
6132                 switch (vec) {
6133                 case 2:
6134                         pf->num_vmdq_vsis = 1;
6135                         pf->num_lan_msix = 1;
6136                         break;
6137                 case 3:
6138                         pf->num_vmdq_vsis = 1;
6139                         pf->num_lan_msix = 2;
6140                         break;
6141                 default:
6142                         pf->num_lan_msix = min_t(int, (vec / 2),
6143                                                  pf->num_lan_qps);
6144                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
6145                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
6146                         break;
6147                 }
6148         }
6149
6150         return err;
6151 }
6152
6153 /**
6154  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
6155  * @vsi: the VSI being configured
6156  * @v_idx: index of the vector in the vsi struct
6157  *
6158  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
6159  **/
6160 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
6161 {
6162         struct i40e_q_vector *q_vector;
6163
6164         /* allocate q_vector */
6165         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
6166         if (!q_vector)
6167                 return -ENOMEM;
6168
6169         q_vector->vsi = vsi;
6170         q_vector->v_idx = v_idx;
6171         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
6172         if (vsi->netdev)
6173                 netif_napi_add(vsi->netdev, &q_vector->napi,
6174                                i40e_napi_poll, vsi->work_limit);
6175
6176         q_vector->rx.latency_range = I40E_LOW_LATENCY;
6177         q_vector->tx.latency_range = I40E_LOW_LATENCY;
6178
6179         /* tie q_vector and vsi together */
6180         vsi->q_vectors[v_idx] = q_vector;
6181
6182         return 0;
6183 }
6184
6185 /**
6186  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
6187  * @vsi: the VSI being configured
6188  *
6189  * We allocate one q_vector per queue interrupt.  If allocation fails we
6190  * return -ENOMEM.
6191  **/
6192 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
6193 {
6194         struct i40e_pf *pf = vsi->back;
6195         int v_idx, num_q_vectors;
6196         int err;
6197
6198         /* if not MSIX, give the one vector only to the LAN VSI */
6199         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6200                 num_q_vectors = vsi->num_q_vectors;
6201         else if (vsi == pf->vsi[pf->lan_vsi])
6202                 num_q_vectors = 1;
6203         else
6204                 return -EINVAL;
6205
6206         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
6207                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
6208                 if (err)
6209                         goto err_out;
6210         }
6211
6212         return 0;
6213
6214 err_out:
6215         while (v_idx--)
6216                 i40e_free_q_vector(vsi, v_idx);
6217
6218         return err;
6219 }
6220
6221 /**
6222  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
6223  * @pf: board private structure to initialize
6224  **/
6225 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
6226 {
6227         int err = 0;
6228
6229         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
6230                 err = i40e_init_msix(pf);
6231                 if (err) {
6232                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
6233                                        I40E_FLAG_RSS_ENABLED    |
6234                                        I40E_FLAG_DCB_ENABLED    |
6235                                        I40E_FLAG_SRIOV_ENABLED  |
6236                                        I40E_FLAG_FD_SB_ENABLED  |
6237                                        I40E_FLAG_FD_ATR_ENABLED |
6238                                        I40E_FLAG_VMDQ_ENABLED);
6239
6240                         /* rework the queue expectations without MSIX */
6241                         i40e_determine_queue_usage(pf);
6242                 }
6243         }
6244
6245         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
6246             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
6247                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
6248                 err = pci_enable_msi(pf->pdev);
6249                 if (err) {
6250                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
6251                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
6252                 }
6253         }
6254
6255         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
6256                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
6257
6258         /* track first vector for misc interrupts */
6259         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
6260 }
6261
6262 /**
6263  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
6264  * @pf: board private structure
6265  *
6266  * This sets up the handler for MSIX 0, which is used to manage the
6267  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
6268  * when in MSI or Legacy interrupt mode.
6269  **/
6270 static int i40e_setup_misc_vector(struct i40e_pf *pf)
6271 {
6272         struct i40e_hw *hw = &pf->hw;
6273         int err = 0;
6274
6275         /* Only request the irq if this is the first time through, and
6276          * not when we're rebuilding after a Reset
6277          */
6278         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6279                 err = request_irq(pf->msix_entries[0].vector,
6280                                   i40e_intr, 0, pf->misc_int_name, pf);
6281                 if (err) {
6282                         dev_info(&pf->pdev->dev,
6283                                  "request_irq for %s failed: %d\n",
6284                                  pf->misc_int_name, err);
6285                         return -EFAULT;
6286                 }
6287         }
6288
6289         i40e_enable_misc_int_causes(hw);
6290
6291         /* associate no queues to the misc vector */
6292         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
6293         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
6294
6295         i40e_flush(hw);
6296
6297         i40e_irq_dynamic_enable_icr0(pf);
6298
6299         return err;
6300 }
6301
6302 /**
6303  * i40e_config_rss - Prepare for RSS if used
6304  * @pf: board private structure
6305  **/
6306 static int i40e_config_rss(struct i40e_pf *pf)
6307 {
6308         /* Set of random keys generated using kernel random number generator */
6309         static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
6310                                 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
6311                                 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
6312                                 0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
6313         struct i40e_hw *hw = &pf->hw;
6314         u32 lut = 0;
6315         int i, j;
6316         u64 hena;
6317
6318         /* Fill out hash function seed */
6319         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
6320                 wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
6321
6322         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
6323         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
6324                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
6325         hena |= I40E_DEFAULT_RSS_HENA;
6326         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
6327         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
6328
6329         /* Populate the LUT with max no. of queues in round robin fashion */
6330         for (i = 0, j = 0; i < pf->hw.func_caps.rss_table_size; i++, j++) {
6331
6332                 /* The assumption is that lan qp count will be the highest
6333                  * qp count for any PF VSI that needs RSS.
6334                  * If multiple VSIs need RSS support, all the qp counts
6335                  * for those VSIs should be a power of 2 for RSS to work.
6336                  * If LAN VSI is the only consumer for RSS then this requirement
6337                  * is not necessary.
6338                  */
6339                 if (j == pf->rss_size)
6340                         j = 0;
6341                 /* lut = 4-byte sliding window of 4 lut entries */
6342                 lut = (lut << 8) | (j &
6343                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
6344                 /* On i = 3, we have 4 entries in lut; write to the register */
6345                 if ((i & 3) == 3)
6346                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
6347         }
6348         i40e_flush(hw);
6349
6350         return 0;
6351 }
6352
6353 /**
6354  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
6355  * @pf: board private structure
6356  * @queue_count: the requested queue count for rss.
6357  *
6358  * returns 0 if rss is not enabled, if enabled returns the final rss queue
6359  * count which may be different from the requested queue count.
6360  **/
6361 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
6362 {
6363         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
6364                 return 0;
6365
6366         queue_count = min_t(int, queue_count, pf->rss_size_max);
6367         queue_count = rounddown_pow_of_two(queue_count);
6368
6369         if (queue_count != pf->rss_size) {
6370                 i40e_prep_for_reset(pf);
6371
6372                 pf->rss_size = queue_count;
6373
6374                 i40e_reset_and_rebuild(pf, true);
6375                 i40e_config_rss(pf);
6376         }
6377         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
6378         return pf->rss_size;
6379 }
6380
6381 /**
6382  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
6383  * @pf: board private structure to initialize
6384  *
6385  * i40e_sw_init initializes the Adapter private data structure.
6386  * Fields are initialized based on PCI device information and
6387  * OS network device settings (MTU size).
6388  **/
6389 static int i40e_sw_init(struct i40e_pf *pf)
6390 {
6391         int err = 0;
6392         int size;
6393
6394         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
6395                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
6396         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
6397         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
6398                 if (I40E_DEBUG_USER & debug)
6399                         pf->hw.debug_mask = debug;
6400                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
6401                                                 I40E_DEFAULT_MSG_ENABLE);
6402         }
6403
6404         /* Set default capability flags */
6405         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
6406                     I40E_FLAG_MSI_ENABLED     |
6407                     I40E_FLAG_MSIX_ENABLED    |
6408                     I40E_FLAG_RX_1BUF_ENABLED;
6409
6410         /* Depending on PF configurations, it is possible that the RSS
6411          * maximum might end up larger than the available queues
6412          */
6413         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
6414         pf->rss_size_max = min_t(int, pf->rss_size_max,
6415                                  pf->hw.func_caps.num_tx_qp);
6416         if (pf->hw.func_caps.rss) {
6417                 pf->flags |= I40E_FLAG_RSS_ENABLED;
6418                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
6419                 pf->rss_size = rounddown_pow_of_two(pf->rss_size);
6420         } else {
6421                 pf->rss_size = 1;
6422         }
6423
6424         /* MFP mode enabled */
6425         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
6426                 pf->flags |= I40E_FLAG_MFP_ENABLED;
6427                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
6428         }
6429
6430         /* FW/NVM is not yet fixed in this regard */
6431         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
6432             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
6433                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6434                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
6435                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
6436                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
6437                 } else {
6438                         dev_info(&pf->pdev->dev,
6439                                  "Flow Director Sideband mode Disabled in MFP mode\n");
6440                 }
6441                 pf->fdir_pf_filter_count =
6442                                  pf->hw.func_caps.fd_filters_guaranteed;
6443                 pf->hw.fdir_shared_filter_count =
6444                                  pf->hw.func_caps.fd_filters_best_effort;
6445         }
6446
6447         if (pf->hw.func_caps.vmdq) {
6448                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
6449                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
6450                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
6451         }
6452
6453 #ifdef CONFIG_PCI_IOV
6454         if (pf->hw.func_caps.num_vfs) {
6455                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
6456                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
6457                 pf->num_req_vfs = min_t(int,
6458                                         pf->hw.func_caps.num_vfs,
6459                                         I40E_MAX_VF_COUNT);
6460         }
6461 #endif /* CONFIG_PCI_IOV */
6462         pf->eeprom_version = 0xDEAD;
6463         pf->lan_veb = I40E_NO_VEB;
6464         pf->lan_vsi = I40E_NO_VSI;
6465
6466         /* set up queue assignment tracking */
6467         size = sizeof(struct i40e_lump_tracking)
6468                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
6469         pf->qp_pile = kzalloc(size, GFP_KERNEL);
6470         if (!pf->qp_pile) {
6471                 err = -ENOMEM;
6472                 goto sw_init_done;
6473         }
6474         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
6475         pf->qp_pile->search_hint = 0;
6476
6477         /* set up vector assignment tracking */
6478         size = sizeof(struct i40e_lump_tracking)
6479                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
6480         pf->irq_pile = kzalloc(size, GFP_KERNEL);
6481         if (!pf->irq_pile) {
6482                 kfree(pf->qp_pile);
6483                 err = -ENOMEM;
6484                 goto sw_init_done;
6485         }
6486         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
6487         pf->irq_pile->search_hint = 0;
6488
6489         mutex_init(&pf->switch_mutex);
6490
6491 sw_init_done:
6492         return err;
6493 }
6494
6495 /**
6496  * i40e_set_ntuple - set the ntuple feature flag and take action
6497  * @pf: board private structure to initialize
6498  * @features: the feature set that the stack is suggesting
6499  *
6500  * returns a bool to indicate if reset needs to happen
6501  **/
6502 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
6503 {
6504         bool need_reset = false;
6505
6506         /* Check if Flow Director n-tuple support was enabled or disabled.  If
6507          * the state changed, we need to reset.
6508          */
6509         if (features & NETIF_F_NTUPLE) {
6510                 /* Enable filters and mark for reset */
6511                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6512                         need_reset = true;
6513                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
6514         } else {
6515                 /* turn off filters, mark for reset and clear SW filter list */
6516                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
6517                         need_reset = true;
6518                         i40e_fdir_filter_exit(pf);
6519                 }
6520                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6521                 /* if ATR was disabled it can be re-enabled. */
6522                 if (!(pf->flags & I40E_FLAG_FD_ATR_ENABLED))
6523                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6524         }
6525         return need_reset;
6526 }
6527
6528 /**
6529  * i40e_set_features - set the netdev feature flags
6530  * @netdev: ptr to the netdev being adjusted
6531  * @features: the feature set that the stack is suggesting
6532  **/
6533 static int i40e_set_features(struct net_device *netdev,
6534                              netdev_features_t features)
6535 {
6536         struct i40e_netdev_priv *np = netdev_priv(netdev);
6537         struct i40e_vsi *vsi = np->vsi;
6538         struct i40e_pf *pf = vsi->back;
6539         bool need_reset;
6540
6541         if (features & NETIF_F_HW_VLAN_CTAG_RX)
6542                 i40e_vlan_stripping_enable(vsi);
6543         else
6544                 i40e_vlan_stripping_disable(vsi);
6545
6546         need_reset = i40e_set_ntuple(pf, features);
6547
6548         if (need_reset)
6549                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
6550
6551         return 0;
6552 }
6553
6554 #ifdef CONFIG_I40E_VXLAN
6555 /**
6556  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
6557  * @pf: board private structure
6558  * @port: The UDP port to look up
6559  *
6560  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
6561  **/
6562 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
6563 {
6564         u8 i;
6565
6566         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6567                 if (pf->vxlan_ports[i] == port)
6568                         return i;
6569         }
6570
6571         return i;
6572 }
6573
6574 /**
6575  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
6576  * @netdev: This physical port's netdev
6577  * @sa_family: Socket Family that VXLAN is notifying us about
6578  * @port: New UDP port number that VXLAN started listening to
6579  **/
6580 static void i40e_add_vxlan_port(struct net_device *netdev,
6581                                 sa_family_t sa_family, __be16 port)
6582 {
6583         struct i40e_netdev_priv *np = netdev_priv(netdev);
6584         struct i40e_vsi *vsi = np->vsi;
6585         struct i40e_pf *pf = vsi->back;
6586         u8 next_idx;
6587         u8 idx;
6588
6589         if (sa_family == AF_INET6)
6590                 return;
6591
6592         idx = i40e_get_vxlan_port_idx(pf, port);
6593
6594         /* Check if port already exists */
6595         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6596                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
6597                 return;
6598         }
6599
6600         /* Now check if there is space to add the new port */
6601         next_idx = i40e_get_vxlan_port_idx(pf, 0);
6602
6603         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6604                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
6605                             ntohs(port));
6606                 return;
6607         }
6608
6609         /* New port: add it and mark its index in the bitmap */
6610         pf->vxlan_ports[next_idx] = port;
6611         pf->pending_vxlan_bitmap |= (1 << next_idx);
6612
6613         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6614 }
6615
6616 /**
6617  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
6618  * @netdev: This physical port's netdev
6619  * @sa_family: Socket Family that VXLAN is notifying us about
6620  * @port: UDP port number that VXLAN stopped listening to
6621  **/
6622 static void i40e_del_vxlan_port(struct net_device *netdev,
6623                                 sa_family_t sa_family, __be16 port)
6624 {
6625         struct i40e_netdev_priv *np = netdev_priv(netdev);
6626         struct i40e_vsi *vsi = np->vsi;
6627         struct i40e_pf *pf = vsi->back;
6628         u8 idx;
6629
6630         if (sa_family == AF_INET6)
6631                 return;
6632
6633         idx = i40e_get_vxlan_port_idx(pf, port);
6634
6635         /* Check if port already exists */
6636         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6637                 /* if port exists, set it to 0 (mark for deletion)
6638                  * and make it pending
6639                  */
6640                 pf->vxlan_ports[idx] = 0;
6641
6642                 pf->pending_vxlan_bitmap |= (1 << idx);
6643
6644                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6645         } else {
6646                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
6647                             ntohs(port));
6648         }
6649 }
6650
6651 #endif
6652 static const struct net_device_ops i40e_netdev_ops = {
6653         .ndo_open               = i40e_open,
6654         .ndo_stop               = i40e_close,
6655         .ndo_start_xmit         = i40e_lan_xmit_frame,
6656         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
6657         .ndo_set_rx_mode        = i40e_set_rx_mode,
6658         .ndo_validate_addr      = eth_validate_addr,
6659         .ndo_set_mac_address    = i40e_set_mac,
6660         .ndo_change_mtu         = i40e_change_mtu,
6661         .ndo_do_ioctl           = i40e_ioctl,
6662         .ndo_tx_timeout         = i40e_tx_timeout,
6663         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
6664         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
6665 #ifdef CONFIG_NET_POLL_CONTROLLER
6666         .ndo_poll_controller    = i40e_netpoll,
6667 #endif
6668         .ndo_setup_tc           = i40e_setup_tc,
6669         .ndo_set_features       = i40e_set_features,
6670         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
6671         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
6672         .ndo_set_vf_tx_rate     = i40e_ndo_set_vf_bw,
6673         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
6674         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
6675 #ifdef CONFIG_I40E_VXLAN
6676         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
6677         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
6678 #endif
6679 };
6680
6681 /**
6682  * i40e_config_netdev - Setup the netdev flags
6683  * @vsi: the VSI being configured
6684  *
6685  * Returns 0 on success, negative value on failure
6686  **/
6687 static int i40e_config_netdev(struct i40e_vsi *vsi)
6688 {
6689         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
6690         struct i40e_pf *pf = vsi->back;
6691         struct i40e_hw *hw = &pf->hw;
6692         struct i40e_netdev_priv *np;
6693         struct net_device *netdev;
6694         u8 mac_addr[ETH_ALEN];
6695         int etherdev_size;
6696
6697         etherdev_size = sizeof(struct i40e_netdev_priv);
6698         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
6699         if (!netdev)
6700                 return -ENOMEM;
6701
6702         vsi->netdev = netdev;
6703         np = netdev_priv(netdev);
6704         np->vsi = vsi;
6705
6706         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
6707                                   NETIF_F_GSO_UDP_TUNNEL |
6708                                   NETIF_F_TSO;
6709
6710         netdev->features = NETIF_F_SG                  |
6711                            NETIF_F_IP_CSUM             |
6712                            NETIF_F_SCTP_CSUM           |
6713                            NETIF_F_HIGHDMA             |
6714                            NETIF_F_GSO_UDP_TUNNEL      |
6715                            NETIF_F_HW_VLAN_CTAG_TX     |
6716                            NETIF_F_HW_VLAN_CTAG_RX     |
6717                            NETIF_F_HW_VLAN_CTAG_FILTER |
6718                            NETIF_F_IPV6_CSUM           |
6719                            NETIF_F_TSO                 |
6720                            NETIF_F_TSO_ECN             |
6721                            NETIF_F_TSO6                |
6722                            NETIF_F_RXCSUM              |
6723                            NETIF_F_NTUPLE              |
6724                            NETIF_F_RXHASH              |
6725                            0;
6726
6727         /* copy netdev features into list of user selectable features */
6728         netdev->hw_features |= netdev->features;
6729
6730         if (vsi->type == I40E_VSI_MAIN) {
6731                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
6732                 memcpy(mac_addr, hw->mac.perm_addr, ETH_ALEN);
6733         } else {
6734                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
6735                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
6736                          pf->vsi[pf->lan_vsi]->netdev->name);
6737                 random_ether_addr(mac_addr);
6738                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
6739         }
6740         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
6741
6742         memcpy(netdev->dev_addr, mac_addr, ETH_ALEN);
6743         memcpy(netdev->perm_addr, mac_addr, ETH_ALEN);
6744         /* vlan gets same features (except vlan offload)
6745          * after any tweaks for specific VSI types
6746          */
6747         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
6748                                                      NETIF_F_HW_VLAN_CTAG_RX |
6749                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
6750         netdev->priv_flags |= IFF_UNICAST_FLT;
6751         netdev->priv_flags |= IFF_SUPP_NOFCS;
6752         /* Setup netdev TC information */
6753         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
6754
6755         netdev->netdev_ops = &i40e_netdev_ops;
6756         netdev->watchdog_timeo = 5 * HZ;
6757         i40e_set_ethtool_ops(netdev);
6758
6759         return 0;
6760 }
6761
6762 /**
6763  * i40e_vsi_delete - Delete a VSI from the switch
6764  * @vsi: the VSI being removed
6765  *
6766  * Returns 0 on success, negative value on failure
6767  **/
6768 static void i40e_vsi_delete(struct i40e_vsi *vsi)
6769 {
6770         /* remove default VSI is not allowed */
6771         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
6772                 return;
6773
6774         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
6775         return;
6776 }
6777
6778 /**
6779  * i40e_add_vsi - Add a VSI to the switch
6780  * @vsi: the VSI being configured
6781  *
6782  * This initializes a VSI context depending on the VSI type to be added and
6783  * passes it down to the add_vsi aq command.
6784  **/
6785 static int i40e_add_vsi(struct i40e_vsi *vsi)
6786 {
6787         int ret = -ENODEV;
6788         struct i40e_mac_filter *f, *ftmp;
6789         struct i40e_pf *pf = vsi->back;
6790         struct i40e_hw *hw = &pf->hw;
6791         struct i40e_vsi_context ctxt;
6792         u8 enabled_tc = 0x1; /* TC0 enabled */
6793         int f_count = 0;
6794
6795         memset(&ctxt, 0, sizeof(ctxt));
6796         switch (vsi->type) {
6797         case I40E_VSI_MAIN:
6798                 /* The PF's main VSI is already setup as part of the
6799                  * device initialization, so we'll not bother with
6800                  * the add_vsi call, but we will retrieve the current
6801                  * VSI context.
6802                  */
6803                 ctxt.seid = pf->main_vsi_seid;
6804                 ctxt.pf_num = pf->hw.pf_id;
6805                 ctxt.vf_num = 0;
6806                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6807                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6808                 if (ret) {
6809                         dev_info(&pf->pdev->dev,
6810                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
6811                                  ret, pf->hw.aq.asq_last_status);
6812                         return -ENOENT;
6813                 }
6814                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
6815                 vsi->info.valid_sections = 0;
6816
6817                 vsi->seid = ctxt.seid;
6818                 vsi->id = ctxt.vsi_number;
6819
6820                 enabled_tc = i40e_pf_get_tc_map(pf);
6821
6822                 /* MFP mode setup queue map and update VSI */
6823                 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
6824                         memset(&ctxt, 0, sizeof(ctxt));
6825                         ctxt.seid = pf->main_vsi_seid;
6826                         ctxt.pf_num = pf->hw.pf_id;
6827                         ctxt.vf_num = 0;
6828                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
6829                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
6830                         if (ret) {
6831                                 dev_info(&pf->pdev->dev,
6832                                          "update vsi failed, aq_err=%d\n",
6833                                          pf->hw.aq.asq_last_status);
6834                                 ret = -ENOENT;
6835                                 goto err;
6836                         }
6837                         /* update the local VSI info queue map */
6838                         i40e_vsi_update_queue_map(vsi, &ctxt);
6839                         vsi->info.valid_sections = 0;
6840                 } else {
6841                         /* Default/Main VSI is only enabled for TC0
6842                          * reconfigure it to enable all TCs that are
6843                          * available on the port in SFP mode.
6844                          */
6845                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
6846                         if (ret) {
6847                                 dev_info(&pf->pdev->dev,
6848                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
6849                                          enabled_tc, ret,
6850                                          pf->hw.aq.asq_last_status);
6851                                 ret = -ENOENT;
6852                         }
6853                 }
6854                 break;
6855
6856         case I40E_VSI_FDIR:
6857                 ctxt.pf_num = hw->pf_id;
6858                 ctxt.vf_num = 0;
6859                 ctxt.uplink_seid = vsi->uplink_seid;
6860                 ctxt.connection_type = 0x1;     /* regular data port */
6861                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6862                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6863                 break;
6864
6865         case I40E_VSI_VMDQ2:
6866                 ctxt.pf_num = hw->pf_id;
6867                 ctxt.vf_num = 0;
6868                 ctxt.uplink_seid = vsi->uplink_seid;
6869                 ctxt.connection_type = 0x1;     /* regular data port */
6870                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
6871
6872                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6873
6874                 /* This VSI is connected to VEB so the switch_id
6875                  * should be set to zero by default.
6876                  */
6877                 ctxt.info.switch_id = 0;
6878                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
6879                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6880
6881                 /* Setup the VSI tx/rx queue map for TC0 only for now */
6882                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6883                 break;
6884
6885         case I40E_VSI_SRIOV:
6886                 ctxt.pf_num = hw->pf_id;
6887                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
6888                 ctxt.uplink_seid = vsi->uplink_seid;
6889                 ctxt.connection_type = 0x1;     /* regular data port */
6890                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
6891
6892                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6893
6894                 /* This VSI is connected to VEB so the switch_id
6895                  * should be set to zero by default.
6896                  */
6897                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6898
6899                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
6900                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
6901                 /* Setup the VSI tx/rx queue map for TC0 only for now */
6902                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6903                 break;
6904
6905         default:
6906                 return -ENODEV;
6907         }
6908
6909         if (vsi->type != I40E_VSI_MAIN) {
6910                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
6911                 if (ret) {
6912                         dev_info(&vsi->back->pdev->dev,
6913                                  "add vsi failed, aq_err=%d\n",
6914                                  vsi->back->hw.aq.asq_last_status);
6915                         ret = -ENOENT;
6916                         goto err;
6917                 }
6918                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
6919                 vsi->info.valid_sections = 0;
6920                 vsi->seid = ctxt.seid;
6921                 vsi->id = ctxt.vsi_number;
6922         }
6923
6924         /* If macvlan filters already exist, force them to get loaded */
6925         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
6926                 f->changed = true;
6927                 f_count++;
6928         }
6929         if (f_count) {
6930                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
6931                 pf->flags |= I40E_FLAG_FILTER_SYNC;
6932         }
6933
6934         /* Update VSI BW information */
6935         ret = i40e_vsi_get_bw_info(vsi);
6936         if (ret) {
6937                 dev_info(&pf->pdev->dev,
6938                          "couldn't get vsi bw info, err %d, aq_err %d\n",
6939                          ret, pf->hw.aq.asq_last_status);
6940                 /* VSI is already added so not tearing that up */
6941                 ret = 0;
6942         }
6943
6944 err:
6945         return ret;
6946 }
6947
6948 /**
6949  * i40e_vsi_release - Delete a VSI and free its resources
6950  * @vsi: the VSI being removed
6951  *
6952  * Returns 0 on success or < 0 on error
6953  **/
6954 int i40e_vsi_release(struct i40e_vsi *vsi)
6955 {
6956         struct i40e_mac_filter *f, *ftmp;
6957         struct i40e_veb *veb = NULL;
6958         struct i40e_pf *pf;
6959         u16 uplink_seid;
6960         int i, n;
6961
6962         pf = vsi->back;
6963
6964         /* release of a VEB-owner or last VSI is not allowed */
6965         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
6966                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
6967                          vsi->seid, vsi->uplink_seid);
6968                 return -ENODEV;
6969         }
6970         if (vsi == pf->vsi[pf->lan_vsi] &&
6971             !test_bit(__I40E_DOWN, &pf->state)) {
6972                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
6973                 return -ENODEV;
6974         }
6975
6976         uplink_seid = vsi->uplink_seid;
6977         if (vsi->type != I40E_VSI_SRIOV) {
6978                 if (vsi->netdev_registered) {
6979                         vsi->netdev_registered = false;
6980                         if (vsi->netdev) {
6981                                 /* results in a call to i40e_close() */
6982                                 unregister_netdev(vsi->netdev);
6983                         }
6984                 } else {
6985                         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
6986                                 i40e_down(vsi);
6987                         i40e_vsi_free_irq(vsi);
6988                         i40e_vsi_free_tx_resources(vsi);
6989                         i40e_vsi_free_rx_resources(vsi);
6990                 }
6991                 i40e_vsi_disable_irq(vsi);
6992         }
6993
6994         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
6995                 i40e_del_filter(vsi, f->macaddr, f->vlan,
6996                                 f->is_vf, f->is_netdev);
6997         i40e_sync_vsi_filters(vsi);
6998
6999         i40e_vsi_delete(vsi);
7000         i40e_vsi_free_q_vectors(vsi);
7001         if (vsi->netdev) {
7002                 free_netdev(vsi->netdev);
7003                 vsi->netdev = NULL;
7004         }
7005         i40e_vsi_clear_rings(vsi);
7006         i40e_vsi_clear(vsi);
7007
7008         /* If this was the last thing on the VEB, except for the
7009          * controlling VSI, remove the VEB, which puts the controlling
7010          * VSI onto the next level down in the switch.
7011          *
7012          * Well, okay, there's one more exception here: don't remove
7013          * the orphan VEBs yet.  We'll wait for an explicit remove request
7014          * from up the network stack.
7015          */
7016         for (n = 0, i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7017                 if (pf->vsi[i] &&
7018                     pf->vsi[i]->uplink_seid == uplink_seid &&
7019                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7020                         n++;      /* count the VSIs */
7021                 }
7022         }
7023         for (i = 0; i < I40E_MAX_VEB; i++) {
7024                 if (!pf->veb[i])
7025                         continue;
7026                 if (pf->veb[i]->uplink_seid == uplink_seid)
7027                         n++;     /* count the VEBs */
7028                 if (pf->veb[i]->seid == uplink_seid)
7029                         veb = pf->veb[i];
7030         }
7031         if (n == 0 && veb && veb->uplink_seid != 0)
7032                 i40e_veb_release(veb);
7033
7034         return 0;
7035 }
7036
7037 /**
7038  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
7039  * @vsi: ptr to the VSI
7040  *
7041  * This should only be called after i40e_vsi_mem_alloc() which allocates the
7042  * corresponding SW VSI structure and initializes num_queue_pairs for the
7043  * newly allocated VSI.
7044  *
7045  * Returns 0 on success or negative on failure
7046  **/
7047 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
7048 {
7049         int ret = -ENOENT;
7050         struct i40e_pf *pf = vsi->back;
7051
7052         if (vsi->q_vectors[0]) {
7053                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
7054                          vsi->seid);
7055                 return -EEXIST;
7056         }
7057
7058         if (vsi->base_vector) {
7059                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
7060                          vsi->seid, vsi->base_vector);
7061                 return -EEXIST;
7062         }
7063
7064         ret = i40e_vsi_alloc_q_vectors(vsi);
7065         if (ret) {
7066                 dev_info(&pf->pdev->dev,
7067                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
7068                          vsi->num_q_vectors, vsi->seid, ret);
7069                 vsi->num_q_vectors = 0;
7070                 goto vector_setup_out;
7071         }
7072
7073         if (vsi->num_q_vectors)
7074                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
7075                                                  vsi->num_q_vectors, vsi->idx);
7076         if (vsi->base_vector < 0) {
7077                 dev_info(&pf->pdev->dev,
7078                          "failed to get queue tracking for VSI %d, err=%d\n",
7079                          vsi->seid, vsi->base_vector);
7080                 i40e_vsi_free_q_vectors(vsi);
7081                 ret = -ENOENT;
7082                 goto vector_setup_out;
7083         }
7084
7085 vector_setup_out:
7086         return ret;
7087 }
7088
7089 /**
7090  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
7091  * @vsi: pointer to the vsi.
7092  *
7093  * This re-allocates a vsi's queue resources.
7094  *
7095  * Returns pointer to the successfully allocated and configured VSI sw struct
7096  * on success, otherwise returns NULL on failure.
7097  **/
7098 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
7099 {
7100         struct i40e_pf *pf = vsi->back;
7101         u8 enabled_tc;
7102         int ret;
7103
7104         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7105         i40e_vsi_clear_rings(vsi);
7106
7107         i40e_vsi_free_arrays(vsi, false);
7108         i40e_set_num_rings_in_vsi(vsi);
7109         ret = i40e_vsi_alloc_arrays(vsi, false);
7110         if (ret)
7111                 goto err_vsi;
7112
7113         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
7114         if (ret < 0) {
7115                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7116                          vsi->seid, ret);
7117                 goto err_vsi;
7118         }
7119         vsi->base_queue = ret;
7120
7121         /* Update the FW view of the VSI. Force a reset of TC and queue
7122          * layout configurations.
7123          */
7124         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
7125         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
7126         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
7127         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
7128
7129         /* assign it some queues */
7130         ret = i40e_alloc_rings(vsi);
7131         if (ret)
7132                 goto err_rings;
7133
7134         /* map all of the rings to the q_vectors */
7135         i40e_vsi_map_rings_to_vectors(vsi);
7136         return vsi;
7137
7138 err_rings:
7139         i40e_vsi_free_q_vectors(vsi);
7140         if (vsi->netdev_registered) {
7141                 vsi->netdev_registered = false;
7142                 unregister_netdev(vsi->netdev);
7143                 free_netdev(vsi->netdev);
7144                 vsi->netdev = NULL;
7145         }
7146         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
7147 err_vsi:
7148         i40e_vsi_clear(vsi);
7149         return NULL;
7150 }
7151
7152 /**
7153  * i40e_vsi_setup - Set up a VSI by a given type
7154  * @pf: board private structure
7155  * @type: VSI type
7156  * @uplink_seid: the switch element to link to
7157  * @param1: usage depends upon VSI type. For VF types, indicates VF id
7158  *
7159  * This allocates the sw VSI structure and its queue resources, then add a VSI
7160  * to the identified VEB.
7161  *
7162  * Returns pointer to the successfully allocated and configure VSI sw struct on
7163  * success, otherwise returns NULL on failure.
7164  **/
7165 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
7166                                 u16 uplink_seid, u32 param1)
7167 {
7168         struct i40e_vsi *vsi = NULL;
7169         struct i40e_veb *veb = NULL;
7170         int ret, i;
7171         int v_idx;
7172
7173         /* The requested uplink_seid must be either
7174          *     - the PF's port seid
7175          *              no VEB is needed because this is the PF
7176          *              or this is a Flow Director special case VSI
7177          *     - seid of an existing VEB
7178          *     - seid of a VSI that owns an existing VEB
7179          *     - seid of a VSI that doesn't own a VEB
7180          *              a new VEB is created and the VSI becomes the owner
7181          *     - seid of the PF VSI, which is what creates the first VEB
7182          *              this is a special case of the previous
7183          *
7184          * Find which uplink_seid we were given and create a new VEB if needed
7185          */
7186         for (i = 0; i < I40E_MAX_VEB; i++) {
7187                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
7188                         veb = pf->veb[i];
7189                         break;
7190                 }
7191         }
7192
7193         if (!veb && uplink_seid != pf->mac_seid) {
7194
7195                 for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7196                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
7197                                 vsi = pf->vsi[i];
7198                                 break;
7199                         }
7200                 }
7201                 if (!vsi) {
7202                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
7203                                  uplink_seid);
7204                         return NULL;
7205                 }
7206
7207                 if (vsi->uplink_seid == pf->mac_seid)
7208                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
7209                                              vsi->tc_config.enabled_tc);
7210                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
7211                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
7212                                              vsi->tc_config.enabled_tc);
7213
7214                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7215                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7216                                 veb = pf->veb[i];
7217                 }
7218                 if (!veb) {
7219                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
7220                         return NULL;
7221                 }
7222
7223                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
7224                 uplink_seid = veb->seid;
7225         }
7226
7227         /* get vsi sw struct */
7228         v_idx = i40e_vsi_mem_alloc(pf, type);
7229         if (v_idx < 0)
7230                 goto err_alloc;
7231         vsi = pf->vsi[v_idx];
7232         if (!vsi)
7233                 goto err_alloc;
7234         vsi->type = type;
7235         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
7236
7237         if (type == I40E_VSI_MAIN)
7238                 pf->lan_vsi = v_idx;
7239         else if (type == I40E_VSI_SRIOV)
7240                 vsi->vf_id = param1;
7241         /* assign it some queues */
7242         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
7243                                 vsi->idx);
7244         if (ret < 0) {
7245                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7246                          vsi->seid, ret);
7247                 goto err_vsi;
7248         }
7249         vsi->base_queue = ret;
7250
7251         /* get a VSI from the hardware */
7252         vsi->uplink_seid = uplink_seid;
7253         ret = i40e_add_vsi(vsi);
7254         if (ret)
7255                 goto err_vsi;
7256
7257         switch (vsi->type) {
7258         /* setup the netdev if needed */
7259         case I40E_VSI_MAIN:
7260         case I40E_VSI_VMDQ2:
7261                 ret = i40e_config_netdev(vsi);
7262                 if (ret)
7263                         goto err_netdev;
7264                 ret = register_netdev(vsi->netdev);
7265                 if (ret)
7266                         goto err_netdev;
7267                 vsi->netdev_registered = true;
7268                 netif_carrier_off(vsi->netdev);
7269 #ifdef CONFIG_I40E_DCB
7270                 /* Setup DCB netlink interface */
7271                 i40e_dcbnl_setup(vsi);
7272 #endif /* CONFIG_I40E_DCB */
7273                 /* fall through */
7274
7275         case I40E_VSI_FDIR:
7276                 /* set up vectors and rings if needed */
7277                 ret = i40e_vsi_setup_vectors(vsi);
7278                 if (ret)
7279                         goto err_msix;
7280
7281                 ret = i40e_alloc_rings(vsi);
7282                 if (ret)
7283                         goto err_rings;
7284
7285                 /* map all of the rings to the q_vectors */
7286                 i40e_vsi_map_rings_to_vectors(vsi);
7287
7288                 i40e_vsi_reset_stats(vsi);
7289                 break;
7290
7291         default:
7292                 /* no netdev or rings for the other VSI types */
7293                 break;
7294         }
7295
7296         return vsi;
7297
7298 err_rings:
7299         i40e_vsi_free_q_vectors(vsi);
7300 err_msix:
7301         if (vsi->netdev_registered) {
7302                 vsi->netdev_registered = false;
7303                 unregister_netdev(vsi->netdev);
7304                 free_netdev(vsi->netdev);
7305                 vsi->netdev = NULL;
7306         }
7307 err_netdev:
7308         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
7309 err_vsi:
7310         i40e_vsi_clear(vsi);
7311 err_alloc:
7312         return NULL;
7313 }
7314
7315 /**
7316  * i40e_veb_get_bw_info - Query VEB BW information
7317  * @veb: the veb to query
7318  *
7319  * Query the Tx scheduler BW configuration data for given VEB
7320  **/
7321 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
7322 {
7323         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
7324         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
7325         struct i40e_pf *pf = veb->pf;
7326         struct i40e_hw *hw = &pf->hw;
7327         u32 tc_bw_max;
7328         int ret = 0;
7329         int i;
7330
7331         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
7332                                                   &bw_data, NULL);
7333         if (ret) {
7334                 dev_info(&pf->pdev->dev,
7335                          "query veb bw config failed, aq_err=%d\n",
7336                          hw->aq.asq_last_status);
7337                 goto out;
7338         }
7339
7340         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
7341                                                    &ets_data, NULL);
7342         if (ret) {
7343                 dev_info(&pf->pdev->dev,
7344                          "query veb bw ets config failed, aq_err=%d\n",
7345                          hw->aq.asq_last_status);
7346                 goto out;
7347         }
7348
7349         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
7350         veb->bw_max_quanta = ets_data.tc_bw_max;
7351         veb->is_abs_credits = bw_data.absolute_credits_enable;
7352         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
7353                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
7354         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
7355                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
7356                 veb->bw_tc_limit_credits[i] =
7357                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
7358                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
7359         }
7360
7361 out:
7362         return ret;
7363 }
7364
7365 /**
7366  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
7367  * @pf: board private structure
7368  *
7369  * On error: returns error code (negative)
7370  * On success: returns vsi index in PF (positive)
7371  **/
7372 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
7373 {
7374         int ret = -ENOENT;
7375         struct i40e_veb *veb;
7376         int i;
7377
7378         /* Need to protect the allocation of switch elements at the PF level */
7379         mutex_lock(&pf->switch_mutex);
7380
7381         /* VEB list may be fragmented if VEB creation/destruction has
7382          * been happening.  We can afford to do a quick scan to look
7383          * for any free slots in the list.
7384          *
7385          * find next empty veb slot, looping back around if necessary
7386          */
7387         i = 0;
7388         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
7389                 i++;
7390         if (i >= I40E_MAX_VEB) {
7391                 ret = -ENOMEM;
7392                 goto err_alloc_veb;  /* out of VEB slots! */
7393         }
7394
7395         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
7396         if (!veb) {
7397                 ret = -ENOMEM;
7398                 goto err_alloc_veb;
7399         }
7400         veb->pf = pf;
7401         veb->idx = i;
7402         veb->enabled_tc = 1;
7403
7404         pf->veb[i] = veb;
7405         ret = i;
7406 err_alloc_veb:
7407         mutex_unlock(&pf->switch_mutex);
7408         return ret;
7409 }
7410
7411 /**
7412  * i40e_switch_branch_release - Delete a branch of the switch tree
7413  * @branch: where to start deleting
7414  *
7415  * This uses recursion to find the tips of the branch to be
7416  * removed, deleting until we get back to and can delete this VEB.
7417  **/
7418 static void i40e_switch_branch_release(struct i40e_veb *branch)
7419 {
7420         struct i40e_pf *pf = branch->pf;
7421         u16 branch_seid = branch->seid;
7422         u16 veb_idx = branch->idx;
7423         int i;
7424
7425         /* release any VEBs on this VEB - RECURSION */
7426         for (i = 0; i < I40E_MAX_VEB; i++) {
7427                 if (!pf->veb[i])
7428                         continue;
7429                 if (pf->veb[i]->uplink_seid == branch->seid)
7430                         i40e_switch_branch_release(pf->veb[i]);
7431         }
7432
7433         /* Release the VSIs on this VEB, but not the owner VSI.
7434          *
7435          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
7436          *       the VEB itself, so don't use (*branch) after this loop.
7437          */
7438         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7439                 if (!pf->vsi[i])
7440                         continue;
7441                 if (pf->vsi[i]->uplink_seid == branch_seid &&
7442                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7443                         i40e_vsi_release(pf->vsi[i]);
7444                 }
7445         }
7446
7447         /* There's one corner case where the VEB might not have been
7448          * removed, so double check it here and remove it if needed.
7449          * This case happens if the veb was created from the debugfs
7450          * commands and no VSIs were added to it.
7451          */
7452         if (pf->veb[veb_idx])
7453                 i40e_veb_release(pf->veb[veb_idx]);
7454 }
7455
7456 /**
7457  * i40e_veb_clear - remove veb struct
7458  * @veb: the veb to remove
7459  **/
7460 static void i40e_veb_clear(struct i40e_veb *veb)
7461 {
7462         if (!veb)
7463                 return;
7464
7465         if (veb->pf) {
7466                 struct i40e_pf *pf = veb->pf;
7467
7468                 mutex_lock(&pf->switch_mutex);
7469                 if (pf->veb[veb->idx] == veb)
7470                         pf->veb[veb->idx] = NULL;
7471                 mutex_unlock(&pf->switch_mutex);
7472         }
7473
7474         kfree(veb);
7475 }
7476
7477 /**
7478  * i40e_veb_release - Delete a VEB and free its resources
7479  * @veb: the VEB being removed
7480  **/
7481 void i40e_veb_release(struct i40e_veb *veb)
7482 {
7483         struct i40e_vsi *vsi = NULL;
7484         struct i40e_pf *pf;
7485         int i, n = 0;
7486
7487         pf = veb->pf;
7488
7489         /* find the remaining VSI and check for extras */
7490         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7491                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
7492                         n++;
7493                         vsi = pf->vsi[i];
7494                 }
7495         }
7496         if (n != 1) {
7497                 dev_info(&pf->pdev->dev,
7498                          "can't remove VEB %d with %d VSIs left\n",
7499                          veb->seid, n);
7500                 return;
7501         }
7502
7503         /* move the remaining VSI to uplink veb */
7504         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
7505         if (veb->uplink_seid) {
7506                 vsi->uplink_seid = veb->uplink_seid;
7507                 if (veb->uplink_seid == pf->mac_seid)
7508                         vsi->veb_idx = I40E_NO_VEB;
7509                 else
7510                         vsi->veb_idx = veb->veb_idx;
7511         } else {
7512                 /* floating VEB */
7513                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
7514                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
7515         }
7516
7517         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
7518         i40e_veb_clear(veb);
7519
7520         return;
7521 }
7522
7523 /**
7524  * i40e_add_veb - create the VEB in the switch
7525  * @veb: the VEB to be instantiated
7526  * @vsi: the controlling VSI
7527  **/
7528 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
7529 {
7530         bool is_default = false;
7531         bool is_cloud = false;
7532         int ret;
7533
7534         /* get a VEB from the hardware */
7535         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
7536                               veb->enabled_tc, is_default,
7537                               is_cloud, &veb->seid, NULL);
7538         if (ret) {
7539                 dev_info(&veb->pf->pdev->dev,
7540                          "couldn't add VEB, err %d, aq_err %d\n",
7541                          ret, veb->pf->hw.aq.asq_last_status);
7542                 return -EPERM;
7543         }
7544
7545         /* get statistics counter */
7546         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
7547                                          &veb->stats_idx, NULL, NULL, NULL);
7548         if (ret) {
7549                 dev_info(&veb->pf->pdev->dev,
7550                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
7551                          ret, veb->pf->hw.aq.asq_last_status);
7552                 return -EPERM;
7553         }
7554         ret = i40e_veb_get_bw_info(veb);
7555         if (ret) {
7556                 dev_info(&veb->pf->pdev->dev,
7557                          "couldn't get VEB bw info, err %d, aq_err %d\n",
7558                          ret, veb->pf->hw.aq.asq_last_status);
7559                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
7560                 return -ENOENT;
7561         }
7562
7563         vsi->uplink_seid = veb->seid;
7564         vsi->veb_idx = veb->idx;
7565         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
7566
7567         return 0;
7568 }
7569
7570 /**
7571  * i40e_veb_setup - Set up a VEB
7572  * @pf: board private structure
7573  * @flags: VEB setup flags
7574  * @uplink_seid: the switch element to link to
7575  * @vsi_seid: the initial VSI seid
7576  * @enabled_tc: Enabled TC bit-map
7577  *
7578  * This allocates the sw VEB structure and links it into the switch
7579  * It is possible and legal for this to be a duplicate of an already
7580  * existing VEB.  It is also possible for both uplink and vsi seids
7581  * to be zero, in order to create a floating VEB.
7582  *
7583  * Returns pointer to the successfully allocated VEB sw struct on
7584  * success, otherwise returns NULL on failure.
7585  **/
7586 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
7587                                 u16 uplink_seid, u16 vsi_seid,
7588                                 u8 enabled_tc)
7589 {
7590         struct i40e_veb *veb, *uplink_veb = NULL;
7591         int vsi_idx, veb_idx;
7592         int ret;
7593
7594         /* if one seid is 0, the other must be 0 to create a floating relay */
7595         if ((uplink_seid == 0 || vsi_seid == 0) &&
7596             (uplink_seid + vsi_seid != 0)) {
7597                 dev_info(&pf->pdev->dev,
7598                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
7599                          uplink_seid, vsi_seid);
7600                 return NULL;
7601         }
7602
7603         /* make sure there is such a vsi and uplink */
7604         for (vsi_idx = 0; vsi_idx < pf->hw.func_caps.num_vsis; vsi_idx++)
7605                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
7606                         break;
7607         if (vsi_idx >= pf->hw.func_caps.num_vsis && vsi_seid != 0) {
7608                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
7609                          vsi_seid);
7610                 return NULL;
7611         }
7612
7613         if (uplink_seid && uplink_seid != pf->mac_seid) {
7614                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
7615                         if (pf->veb[veb_idx] &&
7616                             pf->veb[veb_idx]->seid == uplink_seid) {
7617                                 uplink_veb = pf->veb[veb_idx];
7618                                 break;
7619                         }
7620                 }
7621                 if (!uplink_veb) {
7622                         dev_info(&pf->pdev->dev,
7623                                  "uplink seid %d not found\n", uplink_seid);
7624                         return NULL;
7625                 }
7626         }
7627
7628         /* get veb sw struct */
7629         veb_idx = i40e_veb_mem_alloc(pf);
7630         if (veb_idx < 0)
7631                 goto err_alloc;
7632         veb = pf->veb[veb_idx];
7633         veb->flags = flags;
7634         veb->uplink_seid = uplink_seid;
7635         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
7636         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
7637
7638         /* create the VEB in the switch */
7639         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
7640         if (ret)
7641                 goto err_veb;
7642
7643         return veb;
7644
7645 err_veb:
7646         i40e_veb_clear(veb);
7647 err_alloc:
7648         return NULL;
7649 }
7650
7651 /**
7652  * i40e_setup_pf_switch_element - set pf vars based on switch type
7653  * @pf: board private structure
7654  * @ele: element we are building info from
7655  * @num_reported: total number of elements
7656  * @printconfig: should we print the contents
7657  *
7658  * helper function to assist in extracting a few useful SEID values.
7659  **/
7660 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
7661                                 struct i40e_aqc_switch_config_element_resp *ele,
7662                                 u16 num_reported, bool printconfig)
7663 {
7664         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
7665         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
7666         u8 element_type = ele->element_type;
7667         u16 seid = le16_to_cpu(ele->seid);
7668
7669         if (printconfig)
7670                 dev_info(&pf->pdev->dev,
7671                          "type=%d seid=%d uplink=%d downlink=%d\n",
7672                          element_type, seid, uplink_seid, downlink_seid);
7673
7674         switch (element_type) {
7675         case I40E_SWITCH_ELEMENT_TYPE_MAC:
7676                 pf->mac_seid = seid;
7677                 break;
7678         case I40E_SWITCH_ELEMENT_TYPE_VEB:
7679                 /* Main VEB? */
7680                 if (uplink_seid != pf->mac_seid)
7681                         break;
7682                 if (pf->lan_veb == I40E_NO_VEB) {
7683                         int v;
7684
7685                         /* find existing or else empty VEB */
7686                         for (v = 0; v < I40E_MAX_VEB; v++) {
7687                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
7688                                         pf->lan_veb = v;
7689                                         break;
7690                                 }
7691                         }
7692                         if (pf->lan_veb == I40E_NO_VEB) {
7693                                 v = i40e_veb_mem_alloc(pf);
7694                                 if (v < 0)
7695                                         break;
7696                                 pf->lan_veb = v;
7697                         }
7698                 }
7699
7700                 pf->veb[pf->lan_veb]->seid = seid;
7701                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
7702                 pf->veb[pf->lan_veb]->pf = pf;
7703                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
7704                 break;
7705         case I40E_SWITCH_ELEMENT_TYPE_VSI:
7706                 if (num_reported != 1)
7707                         break;
7708                 /* This is immediately after a reset so we can assume this is
7709                  * the PF's VSI
7710                  */
7711                 pf->mac_seid = uplink_seid;
7712                 pf->pf_seid = downlink_seid;
7713                 pf->main_vsi_seid = seid;
7714                 if (printconfig)
7715                         dev_info(&pf->pdev->dev,
7716                                  "pf_seid=%d main_vsi_seid=%d\n",
7717                                  pf->pf_seid, pf->main_vsi_seid);
7718                 break;
7719         case I40E_SWITCH_ELEMENT_TYPE_PF:
7720         case I40E_SWITCH_ELEMENT_TYPE_VF:
7721         case I40E_SWITCH_ELEMENT_TYPE_EMP:
7722         case I40E_SWITCH_ELEMENT_TYPE_BMC:
7723         case I40E_SWITCH_ELEMENT_TYPE_PE:
7724         case I40E_SWITCH_ELEMENT_TYPE_PA:
7725                 /* ignore these for now */
7726                 break;
7727         default:
7728                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
7729                          element_type, seid);
7730                 break;
7731         }
7732 }
7733
7734 /**
7735  * i40e_fetch_switch_configuration - Get switch config from firmware
7736  * @pf: board private structure
7737  * @printconfig: should we print the contents
7738  *
7739  * Get the current switch configuration from the device and
7740  * extract a few useful SEID values.
7741  **/
7742 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
7743 {
7744         struct i40e_aqc_get_switch_config_resp *sw_config;
7745         u16 next_seid = 0;
7746         int ret = 0;
7747         u8 *aq_buf;
7748         int i;
7749
7750         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
7751         if (!aq_buf)
7752                 return -ENOMEM;
7753
7754         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
7755         do {
7756                 u16 num_reported, num_total;
7757
7758                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
7759                                                 I40E_AQ_LARGE_BUF,
7760                                                 &next_seid, NULL);
7761                 if (ret) {
7762                         dev_info(&pf->pdev->dev,
7763                                  "get switch config failed %d aq_err=%x\n",
7764                                  ret, pf->hw.aq.asq_last_status);
7765                         kfree(aq_buf);
7766                         return -ENOENT;
7767                 }
7768
7769                 num_reported = le16_to_cpu(sw_config->header.num_reported);
7770                 num_total = le16_to_cpu(sw_config->header.num_total);
7771
7772                 if (printconfig)
7773                         dev_info(&pf->pdev->dev,
7774                                  "header: %d reported %d total\n",
7775                                  num_reported, num_total);
7776
7777                 if (num_reported) {
7778                         int sz = sizeof(*sw_config) * num_reported;
7779
7780                         kfree(pf->sw_config);
7781                         pf->sw_config = kzalloc(sz, GFP_KERNEL);
7782                         if (pf->sw_config)
7783                                 memcpy(pf->sw_config, sw_config, sz);
7784                 }
7785
7786                 for (i = 0; i < num_reported; i++) {
7787                         struct i40e_aqc_switch_config_element_resp *ele =
7788                                 &sw_config->element[i];
7789
7790                         i40e_setup_pf_switch_element(pf, ele, num_reported,
7791                                                      printconfig);
7792                 }
7793         } while (next_seid != 0);
7794
7795         kfree(aq_buf);
7796         return ret;
7797 }
7798
7799 /**
7800  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
7801  * @pf: board private structure
7802  * @reinit: if the Main VSI needs to re-initialized.
7803  *
7804  * Returns 0 on success, negative value on failure
7805  **/
7806 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
7807 {
7808         u32 rxfc = 0, txfc = 0, rxfc_reg;
7809         int ret;
7810
7811         /* find out what's out there already */
7812         ret = i40e_fetch_switch_configuration(pf, false);
7813         if (ret) {
7814                 dev_info(&pf->pdev->dev,
7815                          "couldn't fetch switch config, err %d, aq_err %d\n",
7816                          ret, pf->hw.aq.asq_last_status);
7817                 return ret;
7818         }
7819         i40e_pf_reset_stats(pf);
7820
7821         /* first time setup */
7822         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
7823                 struct i40e_vsi *vsi = NULL;
7824                 u16 uplink_seid;
7825
7826                 /* Set up the PF VSI associated with the PF's main VSI
7827                  * that is already in the HW switch
7828                  */
7829                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
7830                         uplink_seid = pf->veb[pf->lan_veb]->seid;
7831                 else
7832                         uplink_seid = pf->mac_seid;
7833                 if (pf->lan_vsi == I40E_NO_VSI)
7834                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
7835                 else if (reinit)
7836                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
7837                 if (!vsi) {
7838                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
7839                         i40e_fdir_teardown(pf);
7840                         return -EAGAIN;
7841                 }
7842         } else {
7843                 /* force a reset of TC and queue layout configurations */
7844                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
7845                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
7846                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
7847                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
7848         }
7849         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
7850
7851         i40e_fdir_sb_setup(pf);
7852
7853         /* Setup static PF queue filter control settings */
7854         ret = i40e_setup_pf_filter_control(pf);
7855         if (ret) {
7856                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
7857                          ret);
7858                 /* Failure here should not stop continuing other steps */
7859         }
7860
7861         /* enable RSS in the HW, even for only one queue, as the stack can use
7862          * the hash
7863          */
7864         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
7865                 i40e_config_rss(pf);
7866
7867         /* fill in link information and enable LSE reporting */
7868         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
7869         i40e_link_event(pf);
7870
7871         /* Initialize user-specific link properties */
7872         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
7873                                   I40E_AQ_AN_COMPLETED) ? true : false);
7874         /* requested_mode is set in probe or by ethtool */
7875         if (!pf->fc_autoneg_status)
7876                 goto no_autoneg;
7877
7878         if ((pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX) &&
7879             (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX))
7880                 pf->hw.fc.current_mode = I40E_FC_FULL;
7881         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX)
7882                 pf->hw.fc.current_mode = I40E_FC_TX_PAUSE;
7883         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX)
7884                 pf->hw.fc.current_mode = I40E_FC_RX_PAUSE;
7885         else
7886                 pf->hw.fc.current_mode = I40E_FC_NONE;
7887
7888         /* sync the flow control settings with the auto-neg values */
7889         switch (pf->hw.fc.current_mode) {
7890         case I40E_FC_FULL:
7891                 txfc = 1;
7892                 rxfc = 1;
7893                 break;
7894         case I40E_FC_TX_PAUSE:
7895                 txfc = 1;
7896                 rxfc = 0;
7897                 break;
7898         case I40E_FC_RX_PAUSE:
7899                 txfc = 0;
7900                 rxfc = 1;
7901                 break;
7902         case I40E_FC_NONE:
7903         case I40E_FC_DEFAULT:
7904                 txfc = 0;
7905                 rxfc = 0;
7906                 break;
7907         case I40E_FC_PFC:
7908                 /* TBD */
7909                 break;
7910         /* no default case, we have to handle all possibilities here */
7911         }
7912
7913         wr32(&pf->hw, I40E_PRTDCB_FCCFG, txfc << I40E_PRTDCB_FCCFG_TFCE_SHIFT);
7914
7915         rxfc_reg = rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
7916                    ~I40E_PRTDCB_MFLCN_RFCE_MASK;
7917         rxfc_reg |= (rxfc << I40E_PRTDCB_MFLCN_RFCE_SHIFT);
7918
7919         wr32(&pf->hw, I40E_PRTDCB_MFLCN, rxfc_reg);
7920
7921         goto fc_complete;
7922
7923 no_autoneg:
7924         /* disable L2 flow control, user can turn it on if they wish */
7925         wr32(&pf->hw, I40E_PRTDCB_FCCFG, 0);
7926         wr32(&pf->hw, I40E_PRTDCB_MFLCN, rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
7927                                          ~I40E_PRTDCB_MFLCN_RFCE_MASK);
7928
7929 fc_complete:
7930         i40e_ptp_init(pf);
7931
7932         return ret;
7933 }
7934
7935 /**
7936  * i40e_determine_queue_usage - Work out queue distribution
7937  * @pf: board private structure
7938  **/
7939 static void i40e_determine_queue_usage(struct i40e_pf *pf)
7940 {
7941         int queues_left;
7942
7943         pf->num_lan_qps = 0;
7944
7945         /* Find the max queues to be put into basic use.  We'll always be
7946          * using TC0, whether or not DCB is running, and TC0 will get the
7947          * big RSS set.
7948          */
7949         queues_left = pf->hw.func_caps.num_tx_qp;
7950
7951         if ((queues_left == 1) ||
7952             !(pf->flags & I40E_FLAG_MSIX_ENABLED) ||
7953             !(pf->flags & (I40E_FLAG_RSS_ENABLED | I40E_FLAG_FD_SB_ENABLED |
7954                            I40E_FLAG_DCB_ENABLED))) {
7955                 /* one qp for PF, no queues for anything else */
7956                 queues_left = 0;
7957                 pf->rss_size = pf->num_lan_qps = 1;
7958
7959                 /* make sure all the fancies are disabled */
7960                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
7961                                I40E_FLAG_FD_SB_ENABLED  |
7962                                I40E_FLAG_FD_ATR_ENABLED |
7963                                I40E_FLAG_DCB_ENABLED    |
7964                                I40E_FLAG_SRIOV_ENABLED  |
7965                                I40E_FLAG_VMDQ_ENABLED);
7966         } else {
7967                 /* Not enough queues for all TCs */
7968                 if ((pf->flags & I40E_FLAG_DCB_ENABLED) &&
7969                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
7970                         pf->flags &= ~I40E_FLAG_DCB_ENABLED;
7971                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
7972                 }
7973                 pf->num_lan_qps = pf->rss_size_max;
7974                 queues_left -= pf->num_lan_qps;
7975         }
7976
7977         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7978                 if (queues_left > 1) {
7979                         queues_left -= 1; /* save 1 queue for FD */
7980                 } else {
7981                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7982                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
7983                 }
7984         }
7985
7986         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
7987             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
7988                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
7989                                         (queues_left / pf->num_vf_qps));
7990                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
7991         }
7992
7993         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7994             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
7995                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
7996                                           (queues_left / pf->num_vmdq_qps));
7997                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
7998         }
7999
8000         pf->queues_left = queues_left;
8001         return;
8002 }
8003
8004 /**
8005  * i40e_setup_pf_filter_control - Setup PF static filter control
8006  * @pf: PF to be setup
8007  *
8008  * i40e_setup_pf_filter_control sets up a pf's initial filter control
8009  * settings. If PE/FCoE are enabled then it will also set the per PF
8010  * based filter sizes required for them. It also enables Flow director,
8011  * ethertype and macvlan type filter settings for the pf.
8012  *
8013  * Returns 0 on success, negative on failure
8014  **/
8015 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
8016 {
8017         struct i40e_filter_control_settings *settings = &pf->filter_settings;
8018
8019         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
8020
8021         /* Flow Director is enabled */
8022         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
8023                 settings->enable_fdir = true;
8024
8025         /* Ethtype and MACVLAN filters enabled for PF */
8026         settings->enable_ethtype = true;
8027         settings->enable_macvlan = true;
8028
8029         if (i40e_set_filter_control(&pf->hw, settings))
8030                 return -ENOENT;
8031
8032         return 0;
8033 }
8034
8035 #define INFO_STRING_LEN 255
8036 static void i40e_print_features(struct i40e_pf *pf)
8037 {
8038         struct i40e_hw *hw = &pf->hw;
8039         char *buf, *string;
8040
8041         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
8042         if (!string) {
8043                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
8044                 return;
8045         }
8046
8047         buf = string;
8048
8049         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
8050 #ifdef CONFIG_PCI_IOV
8051         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
8052 #endif
8053         buf += sprintf(buf, "VSIs: %d QP: %d ", pf->hw.func_caps.num_vsis,
8054                        pf->vsi[pf->lan_vsi]->num_queue_pairs);
8055
8056         if (pf->flags & I40E_FLAG_RSS_ENABLED)
8057                 buf += sprintf(buf, "RSS ");
8058         buf += sprintf(buf, "FDir ");
8059         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
8060                 buf += sprintf(buf, "ATR ");
8061         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
8062                 buf += sprintf(buf, "NTUPLE ");
8063         if (pf->flags & I40E_FLAG_DCB_ENABLED)
8064                 buf += sprintf(buf, "DCB ");
8065         if (pf->flags & I40E_FLAG_PTP)
8066                 buf += sprintf(buf, "PTP ");
8067
8068         BUG_ON(buf > (string + INFO_STRING_LEN));
8069         dev_info(&pf->pdev->dev, "%s\n", string);
8070         kfree(string);
8071 }
8072
8073 /**
8074  * i40e_probe - Device initialization routine
8075  * @pdev: PCI device information struct
8076  * @ent: entry in i40e_pci_tbl
8077  *
8078  * i40e_probe initializes a pf identified by a pci_dev structure.
8079  * The OS initialization, configuring of the pf private structure,
8080  * and a hardware reset occur.
8081  *
8082  * Returns 0 on success, negative on failure
8083  **/
8084 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8085 {
8086         struct i40e_driver_version dv;
8087         struct i40e_pf *pf;
8088         struct i40e_hw *hw;
8089         static u16 pfs_found;
8090         u16 link_status;
8091         int err = 0;
8092         u32 len;
8093
8094         err = pci_enable_device_mem(pdev);
8095         if (err)
8096                 return err;
8097
8098         /* set up for high or low dma */
8099         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
8100         if (err) {
8101                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
8102                 if (err) {
8103                         dev_err(&pdev->dev,
8104                                 "DMA configuration failed: 0x%x\n", err);
8105                         goto err_dma;
8106                 }
8107         }
8108
8109         /* set up pci connections */
8110         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
8111                                            IORESOURCE_MEM), i40e_driver_name);
8112         if (err) {
8113                 dev_info(&pdev->dev,
8114                          "pci_request_selected_regions failed %d\n", err);
8115                 goto err_pci_reg;
8116         }
8117
8118         pci_enable_pcie_error_reporting(pdev);
8119         pci_set_master(pdev);
8120
8121         /* Now that we have a PCI connection, we need to do the
8122          * low level device setup.  This is primarily setting up
8123          * the Admin Queue structures and then querying for the
8124          * device's current profile information.
8125          */
8126         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
8127         if (!pf) {
8128                 err = -ENOMEM;
8129                 goto err_pf_alloc;
8130         }
8131         pf->next_vsi = 0;
8132         pf->pdev = pdev;
8133         set_bit(__I40E_DOWN, &pf->state);
8134
8135         hw = &pf->hw;
8136         hw->back = pf;
8137         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
8138                               pci_resource_len(pdev, 0));
8139         if (!hw->hw_addr) {
8140                 err = -EIO;
8141                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
8142                          (unsigned int)pci_resource_start(pdev, 0),
8143                          (unsigned int)pci_resource_len(pdev, 0), err);
8144                 goto err_ioremap;
8145         }
8146         hw->vendor_id = pdev->vendor;
8147         hw->device_id = pdev->device;
8148         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
8149         hw->subsystem_vendor_id = pdev->subsystem_vendor;
8150         hw->subsystem_device_id = pdev->subsystem_device;
8151         hw->bus.device = PCI_SLOT(pdev->devfn);
8152         hw->bus.func = PCI_FUNC(pdev->devfn);
8153         pf->instance = pfs_found;
8154
8155         /* do a special CORER for clearing PXE mode once at init */
8156         if (hw->revision_id == 0 &&
8157             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
8158                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
8159                 i40e_flush(hw);
8160                 msleep(200);
8161                 pf->corer_count++;
8162
8163                 i40e_clear_pxe_mode(hw);
8164         }
8165
8166         /* Reset here to make sure all is clean and to define PF 'n' */
8167         err = i40e_pf_reset(hw);
8168         if (err) {
8169                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
8170                 goto err_pf_reset;
8171         }
8172         pf->pfr_count++;
8173
8174         hw->aq.num_arq_entries = I40E_AQ_LEN;
8175         hw->aq.num_asq_entries = I40E_AQ_LEN;
8176         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
8177         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
8178         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
8179         snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
8180                  "%s-pf%d:misc",
8181                  dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
8182
8183         err = i40e_init_shared_code(hw);
8184         if (err) {
8185                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
8186                 goto err_pf_reset;
8187         }
8188
8189         /* set up a default setting for link flow control */
8190         pf->hw.fc.requested_mode = I40E_FC_NONE;
8191
8192         err = i40e_init_adminq(hw);
8193         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
8194         if (err) {
8195                 dev_info(&pdev->dev,
8196                          "init_adminq failed: %d expecting API %02x.%02x\n",
8197                          err,
8198                          I40E_FW_API_VERSION_MAJOR, I40E_FW_API_VERSION_MINOR);
8199                 goto err_pf_reset;
8200         }
8201
8202         i40e_verify_eeprom(pf);
8203
8204         i40e_clear_pxe_mode(hw);
8205         err = i40e_get_capabilities(pf);
8206         if (err)
8207                 goto err_adminq_setup;
8208
8209         err = i40e_sw_init(pf);
8210         if (err) {
8211                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
8212                 goto err_sw_init;
8213         }
8214
8215         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
8216                                 hw->func_caps.num_rx_qp,
8217                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
8218         if (err) {
8219                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
8220                 goto err_init_lan_hmc;
8221         }
8222
8223         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
8224         if (err) {
8225                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
8226                 err = -ENOENT;
8227                 goto err_configure_lan_hmc;
8228         }
8229
8230         i40e_get_mac_addr(hw, hw->mac.addr);
8231         if (!is_valid_ether_addr(hw->mac.addr)) {
8232                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
8233                 err = -EIO;
8234                 goto err_mac_addr;
8235         }
8236         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
8237         memcpy(hw->mac.perm_addr, hw->mac.addr, ETH_ALEN);
8238
8239         pci_set_drvdata(pdev, pf);
8240         pci_save_state(pdev);
8241 #ifdef CONFIG_I40E_DCB
8242         err = i40e_init_pf_dcb(pf);
8243         if (err) {
8244                 dev_info(&pdev->dev, "init_pf_dcb failed: %d\n", err);
8245                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
8246                 goto err_init_dcb;
8247         }
8248 #endif /* CONFIG_I40E_DCB */
8249
8250         /* set up periodic task facility */
8251         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
8252         pf->service_timer_period = HZ;
8253
8254         INIT_WORK(&pf->service_task, i40e_service_task);
8255         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
8256         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
8257         pf->link_check_timeout = jiffies;
8258
8259         /* WoL defaults to disabled */
8260         pf->wol_en = false;
8261         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
8262
8263         /* set up the main switch operations */
8264         i40e_determine_queue_usage(pf);
8265         i40e_init_interrupt_scheme(pf);
8266
8267         /* Set up the *vsi struct based on the number of VSIs in the HW,
8268          * and set up our local tracking of the MAIN PF vsi.
8269          */
8270         len = sizeof(struct i40e_vsi *) * pf->hw.func_caps.num_vsis;
8271         pf->vsi = kzalloc(len, GFP_KERNEL);
8272         if (!pf->vsi) {
8273                 err = -ENOMEM;
8274                 goto err_switch_setup;
8275         }
8276
8277         err = i40e_setup_pf_switch(pf, false);
8278         if (err) {
8279                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
8280                 goto err_vsis;
8281         }
8282
8283         /* The main driver is (mostly) up and happy. We need to set this state
8284          * before setting up the misc vector or we get a race and the vector
8285          * ends up disabled forever.
8286          */
8287         clear_bit(__I40E_DOWN, &pf->state);
8288
8289         /* In case of MSIX we are going to setup the misc vector right here
8290          * to handle admin queue events etc. In case of legacy and MSI
8291          * the misc functionality and queue processing is combined in
8292          * the same vector and that gets setup at open.
8293          */
8294         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8295                 err = i40e_setup_misc_vector(pf);
8296                 if (err) {
8297                         dev_info(&pdev->dev,
8298                                  "setup of misc vector failed: %d\n", err);
8299                         goto err_vsis;
8300                 }
8301         }
8302
8303         /* prep for VF support */
8304         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8305             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
8306             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
8307                 u32 val;
8308
8309                 /* disable link interrupts for VFs */
8310                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
8311                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
8312                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
8313                 i40e_flush(hw);
8314
8315                 if (pci_num_vf(pdev)) {
8316                         dev_info(&pdev->dev,
8317                                  "Active VFs found, allocating resources.\n");
8318                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
8319                         if (err)
8320                                 dev_info(&pdev->dev,
8321                                          "Error %d allocating resources for existing VFs\n",
8322                                          err);
8323                 }
8324         }
8325
8326         pfs_found++;
8327
8328         i40e_dbg_pf_init(pf);
8329
8330         /* tell the firmware that we're starting */
8331         dv.major_version = DRV_VERSION_MAJOR;
8332         dv.minor_version = DRV_VERSION_MINOR;
8333         dv.build_version = DRV_VERSION_BUILD;
8334         dv.subbuild_version = 0;
8335         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
8336
8337         /* since everything's happy, start the service_task timer */
8338         mod_timer(&pf->service_timer,
8339                   round_jiffies(jiffies + pf->service_timer_period));
8340
8341         /* Get the negotiated link width and speed from PCI config space */
8342         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
8343
8344         i40e_set_pci_config_data(hw, link_status);
8345
8346         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
8347                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
8348                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
8349                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
8350                  "Unknown"),
8351                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
8352                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
8353                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
8354                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
8355                  "Unknown"));
8356
8357         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
8358             hw->bus.speed < i40e_bus_speed_8000) {
8359                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
8360                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
8361         }
8362
8363         /* print a string summarizing features */
8364         i40e_print_features(pf);
8365
8366         return 0;
8367
8368         /* Unwind what we've done if something failed in the setup */
8369 err_vsis:
8370         set_bit(__I40E_DOWN, &pf->state);
8371         i40e_clear_interrupt_scheme(pf);
8372         kfree(pf->vsi);
8373 err_switch_setup:
8374         i40e_reset_interrupt_capability(pf);
8375         del_timer_sync(&pf->service_timer);
8376 #ifdef CONFIG_I40E_DCB
8377 err_init_dcb:
8378 #endif /* CONFIG_I40E_DCB */
8379 err_mac_addr:
8380 err_configure_lan_hmc:
8381         (void)i40e_shutdown_lan_hmc(hw);
8382 err_init_lan_hmc:
8383         kfree(pf->qp_pile);
8384         kfree(pf->irq_pile);
8385 err_sw_init:
8386 err_adminq_setup:
8387         (void)i40e_shutdown_adminq(hw);
8388 err_pf_reset:
8389         iounmap(hw->hw_addr);
8390 err_ioremap:
8391         kfree(pf);
8392 err_pf_alloc:
8393         pci_disable_pcie_error_reporting(pdev);
8394         pci_release_selected_regions(pdev,
8395                                      pci_select_bars(pdev, IORESOURCE_MEM));
8396 err_pci_reg:
8397 err_dma:
8398         pci_disable_device(pdev);
8399         return err;
8400 }
8401
8402 /**
8403  * i40e_remove - Device removal routine
8404  * @pdev: PCI device information struct
8405  *
8406  * i40e_remove is called by the PCI subsystem to alert the driver
8407  * that is should release a PCI device.  This could be caused by a
8408  * Hot-Plug event, or because the driver is going to be removed from
8409  * memory.
8410  **/
8411 static void i40e_remove(struct pci_dev *pdev)
8412 {
8413         struct i40e_pf *pf = pci_get_drvdata(pdev);
8414         i40e_status ret_code;
8415         u32 reg;
8416         int i;
8417
8418         i40e_dbg_pf_exit(pf);
8419
8420         i40e_ptp_stop(pf);
8421
8422         /* no more scheduling of any task */
8423         set_bit(__I40E_DOWN, &pf->state);
8424         del_timer_sync(&pf->service_timer);
8425         cancel_work_sync(&pf->service_task);
8426
8427         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
8428                 i40e_free_vfs(pf);
8429                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
8430         }
8431
8432         i40e_fdir_teardown(pf);
8433
8434         /* If there is a switch structure or any orphans, remove them.
8435          * This will leave only the PF's VSI remaining.
8436          */
8437         for (i = 0; i < I40E_MAX_VEB; i++) {
8438                 if (!pf->veb[i])
8439                         continue;
8440
8441                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
8442                     pf->veb[i]->uplink_seid == 0)
8443                         i40e_switch_branch_release(pf->veb[i]);
8444         }
8445
8446         /* Now we can shutdown the PF's VSI, just before we kill
8447          * adminq and hmc.
8448          */
8449         if (pf->vsi[pf->lan_vsi])
8450                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
8451
8452         i40e_stop_misc_vector(pf);
8453         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8454                 synchronize_irq(pf->msix_entries[0].vector);
8455                 free_irq(pf->msix_entries[0].vector, pf);
8456         }
8457
8458         /* shutdown and destroy the HMC */
8459         ret_code = i40e_shutdown_lan_hmc(&pf->hw);
8460         if (ret_code)
8461                 dev_warn(&pdev->dev,
8462                          "Failed to destroy the HMC resources: %d\n", ret_code);
8463
8464         /* shutdown the adminq */
8465         ret_code = i40e_shutdown_adminq(&pf->hw);
8466         if (ret_code)
8467                 dev_warn(&pdev->dev,
8468                          "Failed to destroy the Admin Queue resources: %d\n",
8469                          ret_code);
8470
8471         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
8472         i40e_clear_interrupt_scheme(pf);
8473         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
8474                 if (pf->vsi[i]) {
8475                         i40e_vsi_clear_rings(pf->vsi[i]);
8476                         i40e_vsi_clear(pf->vsi[i]);
8477                         pf->vsi[i] = NULL;
8478                 }
8479         }
8480
8481         for (i = 0; i < I40E_MAX_VEB; i++) {
8482                 kfree(pf->veb[i]);
8483                 pf->veb[i] = NULL;
8484         }
8485
8486         kfree(pf->qp_pile);
8487         kfree(pf->irq_pile);
8488         kfree(pf->sw_config);
8489         kfree(pf->vsi);
8490
8491         /* force a PF reset to clean anything leftover */
8492         reg = rd32(&pf->hw, I40E_PFGEN_CTRL);
8493         wr32(&pf->hw, I40E_PFGEN_CTRL, (reg | I40E_PFGEN_CTRL_PFSWR_MASK));
8494         i40e_flush(&pf->hw);
8495
8496         iounmap(pf->hw.hw_addr);
8497         kfree(pf);
8498         pci_release_selected_regions(pdev,
8499                                      pci_select_bars(pdev, IORESOURCE_MEM));
8500
8501         pci_disable_pcie_error_reporting(pdev);
8502         pci_disable_device(pdev);
8503 }
8504
8505 /**
8506  * i40e_pci_error_detected - warning that something funky happened in PCI land
8507  * @pdev: PCI device information struct
8508  *
8509  * Called to warn that something happened and the error handling steps
8510  * are in progress.  Allows the driver to quiesce things, be ready for
8511  * remediation.
8512  **/
8513 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
8514                                                 enum pci_channel_state error)
8515 {
8516         struct i40e_pf *pf = pci_get_drvdata(pdev);
8517
8518         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
8519
8520         /* shutdown all operations */
8521         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
8522                 rtnl_lock();
8523                 i40e_prep_for_reset(pf);
8524                 rtnl_unlock();
8525         }
8526
8527         /* Request a slot reset */
8528         return PCI_ERS_RESULT_NEED_RESET;
8529 }
8530
8531 /**
8532  * i40e_pci_error_slot_reset - a PCI slot reset just happened
8533  * @pdev: PCI device information struct
8534  *
8535  * Called to find if the driver can work with the device now that
8536  * the pci slot has been reset.  If a basic connection seems good
8537  * (registers are readable and have sane content) then return a
8538  * happy little PCI_ERS_RESULT_xxx.
8539  **/
8540 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
8541 {
8542         struct i40e_pf *pf = pci_get_drvdata(pdev);
8543         pci_ers_result_t result;
8544         int err;
8545         u32 reg;
8546
8547         dev_info(&pdev->dev, "%s\n", __func__);
8548         if (pci_enable_device_mem(pdev)) {
8549                 dev_info(&pdev->dev,
8550                          "Cannot re-enable PCI device after reset.\n");
8551                 result = PCI_ERS_RESULT_DISCONNECT;
8552         } else {
8553                 pci_set_master(pdev);
8554                 pci_restore_state(pdev);
8555                 pci_save_state(pdev);
8556                 pci_wake_from_d3(pdev, false);
8557
8558                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
8559                 if (reg == 0)
8560                         result = PCI_ERS_RESULT_RECOVERED;
8561                 else
8562                         result = PCI_ERS_RESULT_DISCONNECT;
8563         }
8564
8565         err = pci_cleanup_aer_uncorrect_error_status(pdev);
8566         if (err) {
8567                 dev_info(&pdev->dev,
8568                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
8569                          err);
8570                 /* non-fatal, continue */
8571         }
8572
8573         return result;
8574 }
8575
8576 /**
8577  * i40e_pci_error_resume - restart operations after PCI error recovery
8578  * @pdev: PCI device information struct
8579  *
8580  * Called to allow the driver to bring things back up after PCI error
8581  * and/or reset recovery has finished.
8582  **/
8583 static void i40e_pci_error_resume(struct pci_dev *pdev)
8584 {
8585         struct i40e_pf *pf = pci_get_drvdata(pdev);
8586
8587         dev_info(&pdev->dev, "%s\n", __func__);
8588         if (test_bit(__I40E_SUSPENDED, &pf->state))
8589                 return;
8590
8591         rtnl_lock();
8592         i40e_handle_reset_warning(pf);
8593         rtnl_lock();
8594 }
8595
8596 /**
8597  * i40e_shutdown - PCI callback for shutting down
8598  * @pdev: PCI device information struct
8599  **/
8600 static void i40e_shutdown(struct pci_dev *pdev)
8601 {
8602         struct i40e_pf *pf = pci_get_drvdata(pdev);
8603         struct i40e_hw *hw = &pf->hw;
8604
8605         set_bit(__I40E_SUSPENDED, &pf->state);
8606         set_bit(__I40E_DOWN, &pf->state);
8607         rtnl_lock();
8608         i40e_prep_for_reset(pf);
8609         rtnl_unlock();
8610
8611         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
8612         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
8613
8614         if (system_state == SYSTEM_POWER_OFF) {
8615                 pci_wake_from_d3(pdev, pf->wol_en);
8616                 pci_set_power_state(pdev, PCI_D3hot);
8617         }
8618 }
8619
8620 #ifdef CONFIG_PM
8621 /**
8622  * i40e_suspend - PCI callback for moving to D3
8623  * @pdev: PCI device information struct
8624  **/
8625 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
8626 {
8627         struct i40e_pf *pf = pci_get_drvdata(pdev);
8628         struct i40e_hw *hw = &pf->hw;
8629
8630         set_bit(__I40E_SUSPENDED, &pf->state);
8631         set_bit(__I40E_DOWN, &pf->state);
8632         rtnl_lock();
8633         i40e_prep_for_reset(pf);
8634         rtnl_unlock();
8635
8636         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
8637         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
8638
8639         pci_wake_from_d3(pdev, pf->wol_en);
8640         pci_set_power_state(pdev, PCI_D3hot);
8641
8642         return 0;
8643 }
8644
8645 /**
8646  * i40e_resume - PCI callback for waking up from D3
8647  * @pdev: PCI device information struct
8648  **/
8649 static int i40e_resume(struct pci_dev *pdev)
8650 {
8651         struct i40e_pf *pf = pci_get_drvdata(pdev);
8652         u32 err;
8653
8654         pci_set_power_state(pdev, PCI_D0);
8655         pci_restore_state(pdev);
8656         /* pci_restore_state() clears dev->state_saves, so
8657          * call pci_save_state() again to restore it.
8658          */
8659         pci_save_state(pdev);
8660
8661         err = pci_enable_device_mem(pdev);
8662         if (err) {
8663                 dev_err(&pdev->dev,
8664                         "%s: Cannot enable PCI device from suspend\n",
8665                         __func__);
8666                 return err;
8667         }
8668         pci_set_master(pdev);
8669
8670         /* no wakeup events while running */
8671         pci_wake_from_d3(pdev, false);
8672
8673         /* handling the reset will rebuild the device state */
8674         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
8675                 clear_bit(__I40E_DOWN, &pf->state);
8676                 rtnl_lock();
8677                 i40e_reset_and_rebuild(pf, false);
8678                 rtnl_unlock();
8679         }
8680
8681         return 0;
8682 }
8683
8684 #endif
8685 static const struct pci_error_handlers i40e_err_handler = {
8686         .error_detected = i40e_pci_error_detected,
8687         .slot_reset = i40e_pci_error_slot_reset,
8688         .resume = i40e_pci_error_resume,
8689 };
8690
8691 static struct pci_driver i40e_driver = {
8692         .name     = i40e_driver_name,
8693         .id_table = i40e_pci_tbl,
8694         .probe    = i40e_probe,
8695         .remove   = i40e_remove,
8696 #ifdef CONFIG_PM
8697         .suspend  = i40e_suspend,
8698         .resume   = i40e_resume,
8699 #endif
8700         .shutdown = i40e_shutdown,
8701         .err_handler = &i40e_err_handler,
8702         .sriov_configure = i40e_pci_sriov_configure,
8703 };
8704
8705 /**
8706  * i40e_init_module - Driver registration routine
8707  *
8708  * i40e_init_module is the first routine called when the driver is
8709  * loaded. All it does is register with the PCI subsystem.
8710  **/
8711 static int __init i40e_init_module(void)
8712 {
8713         pr_info("%s: %s - version %s\n", i40e_driver_name,
8714                 i40e_driver_string, i40e_driver_version_str);
8715         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
8716         i40e_dbg_init();
8717         return pci_register_driver(&i40e_driver);
8718 }
8719 module_init(i40e_init_module);
8720
8721 /**
8722  * i40e_exit_module - Driver exit cleanup routine
8723  *
8724  * i40e_exit_module is called just before the driver is removed
8725  * from memory.
8726  **/
8727 static void __exit i40e_exit_module(void)
8728 {
8729         pci_unregister_driver(&i40e_driver);
8730         i40e_dbg_exit();
8731 }
8732 module_exit(i40e_exit_module);