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                         ena_mask &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2901                         i40e_ptp_tx_hwtstamp(pf);
2902                         prttsyn_stat &= ~I40E_PRTTSYN_STAT_0_TXTIME_MASK;
2903                 }
2904
2905                 wr32(hw, I40E_PRTTSYN_STAT_0, prttsyn_stat);
2906         }
2907
2908         /* If a critical error is pending we have no choice but to reset the
2909          * device.
2910          * Report and mask out any remaining unexpected interrupts.
2911          */
2912         icr0_remaining = icr0 & ena_mask;
2913         if (icr0_remaining) {
2914                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
2915                          icr0_remaining);
2916                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
2917                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
2918                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
2919                         dev_info(&pf->pdev->dev, "device will be reset\n");
2920                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2921                         i40e_service_event_schedule(pf);
2922                 }
2923                 ena_mask &= ~icr0_remaining;
2924         }
2925         ret = IRQ_HANDLED;
2926
2927 enable_intr:
2928         /* re-enable interrupt causes */
2929         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
2930         if (!test_bit(__I40E_DOWN, &pf->state)) {
2931                 i40e_service_event_schedule(pf);
2932                 i40e_irq_dynamic_enable_icr0(pf);
2933         }
2934
2935         return ret;
2936 }
2937
2938 /**
2939  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
2940  * @tx_ring:  tx ring to clean
2941  * @budget:   how many cleans we're allowed
2942  *
2943  * Returns true if there's any budget left (e.g. the clean is finished)
2944  **/
2945 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
2946 {
2947         struct i40e_vsi *vsi = tx_ring->vsi;
2948         u16 i = tx_ring->next_to_clean;
2949         struct i40e_tx_buffer *tx_buf;
2950         struct i40e_tx_desc *tx_desc;
2951
2952         tx_buf = &tx_ring->tx_bi[i];
2953         tx_desc = I40E_TX_DESC(tx_ring, i);
2954         i -= tx_ring->count;
2955
2956         do {
2957                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
2958
2959                 /* if next_to_watch is not set then there is no work pending */
2960                 if (!eop_desc)
2961                         break;
2962
2963                 /* prevent any other reads prior to eop_desc */
2964                 read_barrier_depends();
2965
2966                 /* if the descriptor isn't done, no work yet to do */
2967                 if (!(eop_desc->cmd_type_offset_bsz &
2968                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
2969                         break;
2970
2971                 /* clear next_to_watch to prevent false hangs */
2972                 tx_buf->next_to_watch = NULL;
2973
2974                 /* unmap skb header data */
2975                 dma_unmap_single(tx_ring->dev,
2976                                  dma_unmap_addr(tx_buf, dma),
2977                                  dma_unmap_len(tx_buf, len),
2978                                  DMA_TO_DEVICE);
2979
2980                 dma_unmap_len_set(tx_buf, len, 0);
2981
2982
2983                 /* move to the next desc and buffer to clean */
2984                 tx_buf++;
2985                 tx_desc++;
2986                 i++;
2987                 if (unlikely(!i)) {
2988                         i -= tx_ring->count;
2989                         tx_buf = tx_ring->tx_bi;
2990                         tx_desc = I40E_TX_DESC(tx_ring, 0);
2991                 }
2992
2993                 /* update budget accounting */
2994                 budget--;
2995         } while (likely(budget));
2996
2997         i += tx_ring->count;
2998         tx_ring->next_to_clean = i;
2999
3000         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3001                 i40e_irq_dynamic_enable(vsi,
3002                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3003         }
3004         return budget > 0;
3005 }
3006
3007 /**
3008  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3009  * @irq: interrupt number
3010  * @data: pointer to a q_vector
3011  **/
3012 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3013 {
3014         struct i40e_q_vector *q_vector = data;
3015         struct i40e_vsi *vsi;
3016
3017         if (!q_vector->tx.ring)
3018                 return IRQ_HANDLED;
3019
3020         vsi = q_vector->tx.ring->vsi;
3021         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3022
3023         return IRQ_HANDLED;
3024 }
3025
3026 /**
3027  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3028  * @vsi: the VSI being configured
3029  * @v_idx: vector index
3030  * @qp_idx: queue pair index
3031  **/
3032 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3033 {
3034         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3035         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3036         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3037
3038         tx_ring->q_vector = q_vector;
3039         tx_ring->next = q_vector->tx.ring;
3040         q_vector->tx.ring = tx_ring;
3041         q_vector->tx.count++;
3042
3043         rx_ring->q_vector = q_vector;
3044         rx_ring->next = q_vector->rx.ring;
3045         q_vector->rx.ring = rx_ring;
3046         q_vector->rx.count++;
3047 }
3048
3049 /**
3050  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3051  * @vsi: the VSI being configured
3052  *
3053  * This function maps descriptor rings to the queue-specific vectors
3054  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3055  * one vector per queue pair, but on a constrained vector budget, we
3056  * group the queue pairs as "efficiently" as possible.
3057  **/
3058 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3059 {
3060         int qp_remaining = vsi->num_queue_pairs;
3061         int q_vectors = vsi->num_q_vectors;
3062         int num_ringpairs;
3063         int v_start = 0;
3064         int qp_idx = 0;
3065
3066         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3067          * group them so there are multiple queues per vector.
3068          */
3069         for (; v_start < q_vectors && qp_remaining; v_start++) {
3070                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3071
3072                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3073
3074                 q_vector->num_ringpairs = num_ringpairs;
3075
3076                 q_vector->rx.count = 0;
3077                 q_vector->tx.count = 0;
3078                 q_vector->rx.ring = NULL;
3079                 q_vector->tx.ring = NULL;
3080
3081                 while (num_ringpairs--) {
3082                         map_vector_to_qp(vsi, v_start, qp_idx);
3083                         qp_idx++;
3084                         qp_remaining--;
3085                 }
3086         }
3087 }
3088
3089 /**
3090  * i40e_vsi_request_irq - Request IRQ from the OS
3091  * @vsi: the VSI being configured
3092  * @basename: name for the vector
3093  **/
3094 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3095 {
3096         struct i40e_pf *pf = vsi->back;
3097         int err;
3098
3099         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3100                 err = i40e_vsi_request_irq_msix(vsi, basename);
3101         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3102                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3103                                   pf->misc_int_name, pf);
3104         else
3105                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3106                                   pf->misc_int_name, pf);
3107
3108         if (err)
3109                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3110
3111         return err;
3112 }
3113
3114 #ifdef CONFIG_NET_POLL_CONTROLLER
3115 /**
3116  * i40e_netpoll - A Polling 'interrupt'handler
3117  * @netdev: network interface device structure
3118  *
3119  * This is used by netconsole to send skbs without having to re-enable
3120  * interrupts.  It's not called while the normal interrupt routine is executing.
3121  **/
3122 static void i40e_netpoll(struct net_device *netdev)
3123 {
3124         struct i40e_netdev_priv *np = netdev_priv(netdev);
3125         struct i40e_vsi *vsi = np->vsi;
3126         struct i40e_pf *pf = vsi->back;
3127         int i;
3128
3129         /* if interface is down do nothing */
3130         if (test_bit(__I40E_DOWN, &vsi->state))
3131                 return;
3132
3133         pf->flags |= I40E_FLAG_IN_NETPOLL;
3134         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3135                 for (i = 0; i < vsi->num_q_vectors; i++)
3136                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3137         } else {
3138                 i40e_intr(pf->pdev->irq, netdev);
3139         }
3140         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3141 }
3142 #endif
3143
3144 /**
3145  * i40e_vsi_control_tx - Start or stop a VSI's rings
3146  * @vsi: the VSI being configured
3147  * @enable: start or stop the rings
3148  **/
3149 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3150 {
3151         struct i40e_pf *pf = vsi->back;
3152         struct i40e_hw *hw = &pf->hw;
3153         int i, j, pf_q;
3154         u32 tx_reg;
3155
3156         pf_q = vsi->base_queue;
3157         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3158                 for (j = 0; j < 50; j++) {
3159                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3160                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3161                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3162                                 break;
3163                         usleep_range(1000, 2000);
3164                 }
3165                 /* Skip if the queue is already in the requested state */
3166                 if (enable && (tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3167                         continue;
3168                 if (!enable && !(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3169                         continue;
3170
3171                 /* turn on/off the queue */
3172                 if (enable) {
3173                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3174                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3175                 } else {
3176                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3177                 }
3178
3179                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3180
3181                 /* wait for the change to finish */
3182                 for (j = 0; j < 10; j++) {
3183                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3184                         if (enable) {
3185                                 if ((tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3186                                         break;
3187                         } else {
3188                                 if (!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3189                                         break;
3190                         }
3191
3192                         udelay(10);
3193                 }
3194                 if (j >= 10) {
3195                         dev_info(&pf->pdev->dev, "Tx ring %d %sable timeout\n",
3196                                  pf_q, (enable ? "en" : "dis"));
3197                         return -ETIMEDOUT;
3198                 }
3199         }
3200
3201         if (hw->revision_id == 0)
3202                 mdelay(50);
3203
3204         return 0;
3205 }
3206
3207 /**
3208  * i40e_vsi_control_rx - Start or stop a VSI's rings
3209  * @vsi: the VSI being configured
3210  * @enable: start or stop the rings
3211  **/
3212 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3213 {
3214         struct i40e_pf *pf = vsi->back;
3215         struct i40e_hw *hw = &pf->hw;
3216         int i, j, pf_q;
3217         u32 rx_reg;
3218
3219         pf_q = vsi->base_queue;
3220         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3221                 for (j = 0; j < 50; j++) {
3222                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3223                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3224                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3225                                 break;
3226                         usleep_range(1000, 2000);
3227                 }
3228
3229                 if (enable) {
3230                         /* is STAT set ? */
3231                         if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3232                                 continue;
3233                 } else {
3234                         /* is !STAT set ? */
3235                         if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3236                                 continue;
3237                 }
3238
3239                 /* turn on/off the queue */
3240                 if (enable)
3241                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3242                 else
3243                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3244                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3245
3246                 /* wait for the change to finish */
3247                 for (j = 0; j < 10; j++) {
3248                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3249
3250                         if (enable) {
3251                                 if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3252                                         break;
3253                         } else {
3254                                 if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3255                                         break;
3256                         }
3257
3258                         udelay(10);
3259                 }
3260                 if (j >= 10) {
3261                         dev_info(&pf->pdev->dev, "Rx ring %d %sable timeout\n",
3262                                  pf_q, (enable ? "en" : "dis"));
3263                         return -ETIMEDOUT;
3264                 }
3265         }
3266
3267         return 0;
3268 }
3269
3270 /**
3271  * i40e_vsi_control_rings - Start or stop a VSI's rings
3272  * @vsi: the VSI being configured
3273  * @enable: start or stop the rings
3274  **/
3275 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3276 {
3277         int ret = 0;
3278
3279         /* do rx first for enable and last for disable */
3280         if (request) {
3281                 ret = i40e_vsi_control_rx(vsi, request);
3282                 if (ret)
3283                         return ret;
3284                 ret = i40e_vsi_control_tx(vsi, request);
3285         } else {
3286                 /* Ignore return value, we need to shutdown whatever we can */
3287                 i40e_vsi_control_tx(vsi, request);
3288                 i40e_vsi_control_rx(vsi, request);
3289         }
3290
3291         return ret;
3292 }
3293
3294 /**
3295  * i40e_vsi_free_irq - Free the irq association with the OS
3296  * @vsi: the VSI being configured
3297  **/
3298 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3299 {
3300         struct i40e_pf *pf = vsi->back;
3301         struct i40e_hw *hw = &pf->hw;
3302         int base = vsi->base_vector;
3303         u32 val, qp;
3304         int i;
3305
3306         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3307                 if (!vsi->q_vectors)
3308                         return;
3309
3310                 for (i = 0; i < vsi->num_q_vectors; i++) {
3311                         u16 vector = i + base;
3312
3313                         /* free only the irqs that were actually requested */
3314                         if (!vsi->q_vectors[i] ||
3315                             !vsi->q_vectors[i]->num_ringpairs)
3316                                 continue;
3317
3318                         /* clear the affinity_mask in the IRQ descriptor */
3319                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3320                                               NULL);
3321                         free_irq(pf->msix_entries[vector].vector,
3322                                  vsi->q_vectors[i]);
3323
3324                         /* Tear down the interrupt queue link list
3325                          *
3326                          * We know that they come in pairs and always
3327                          * the Rx first, then the Tx.  To clear the
3328                          * link list, stick the EOL value into the
3329                          * next_q field of the registers.
3330                          */
3331                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3332                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3333                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3334                         val |= I40E_QUEUE_END_OF_LIST
3335                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3336                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3337
3338                         while (qp != I40E_QUEUE_END_OF_LIST) {
3339                                 u32 next;
3340
3341                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3342
3343                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3344                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3345                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3346                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3347
3348                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3349                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3350
3351                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3352
3353                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3354
3355                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3356                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3357
3358                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3359                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3360                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3361                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3362
3363                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3364                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3365
3366                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3367                                 qp = next;
3368                         }
3369                 }
3370         } else {
3371                 free_irq(pf->pdev->irq, pf);
3372
3373                 val = rd32(hw, I40E_PFINT_LNKLST0);
3374                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3375                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3376                 val |= I40E_QUEUE_END_OF_LIST
3377                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3378                 wr32(hw, I40E_PFINT_LNKLST0, val);
3379
3380                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3381                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3382                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3383                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3384                          I40E_QINT_RQCTL_INTEVENT_MASK);
3385
3386                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3387                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3388
3389                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3390
3391                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3392
3393                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3394                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3395                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3396                          I40E_QINT_TQCTL_INTEVENT_MASK);
3397
3398                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3399                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3400
3401                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3402         }
3403 }
3404
3405 /**
3406  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3407  * @vsi: the VSI being configured
3408  * @v_idx: Index of vector to be freed
3409  *
3410  * This function frees the memory allocated to the q_vector.  In addition if
3411  * NAPI is enabled it will delete any references to the NAPI struct prior
3412  * to freeing the q_vector.
3413  **/
3414 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3415 {
3416         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3417         struct i40e_ring *ring;
3418
3419         if (!q_vector)
3420                 return;
3421
3422         /* disassociate q_vector from rings */
3423         i40e_for_each_ring(ring, q_vector->tx)
3424                 ring->q_vector = NULL;
3425
3426         i40e_for_each_ring(ring, q_vector->rx)
3427                 ring->q_vector = NULL;
3428
3429         /* only VSI w/ an associated netdev is set up w/ NAPI */
3430         if (vsi->netdev)
3431                 netif_napi_del(&q_vector->napi);
3432
3433         vsi->q_vectors[v_idx] = NULL;
3434
3435         kfree_rcu(q_vector, rcu);
3436 }
3437
3438 /**
3439  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3440  * @vsi: the VSI being un-configured
3441  *
3442  * This frees the memory allocated to the q_vectors and
3443  * deletes references to the NAPI struct.
3444  **/
3445 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3446 {
3447         int v_idx;
3448
3449         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3450                 i40e_free_q_vector(vsi, v_idx);
3451 }
3452
3453 /**
3454  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3455  * @pf: board private structure
3456  **/
3457 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3458 {
3459         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3460         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3461                 pci_disable_msix(pf->pdev);
3462                 kfree(pf->msix_entries);
3463                 pf->msix_entries = NULL;
3464         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3465                 pci_disable_msi(pf->pdev);
3466         }
3467         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3468 }
3469
3470 /**
3471  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3472  * @pf: board private structure
3473  *
3474  * We go through and clear interrupt specific resources and reset the structure
3475  * to pre-load conditions
3476  **/
3477 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3478 {
3479         int i;
3480
3481         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3482         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
3483                 if (pf->vsi[i])
3484                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3485         i40e_reset_interrupt_capability(pf);
3486 }
3487
3488 /**
3489  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3490  * @vsi: the VSI being configured
3491  **/
3492 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3493 {
3494         int q_idx;
3495
3496         if (!vsi->netdev)
3497                 return;
3498
3499         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3500                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3501 }
3502
3503 /**
3504  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3505  * @vsi: the VSI being configured
3506  **/
3507 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3508 {
3509         int q_idx;
3510
3511         if (!vsi->netdev)
3512                 return;
3513
3514         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3515                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3516 }
3517
3518 /**
3519  * i40e_quiesce_vsi - Pause a given VSI
3520  * @vsi: the VSI being paused
3521  **/
3522 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3523 {
3524         if (test_bit(__I40E_DOWN, &vsi->state))
3525                 return;
3526
3527         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3528         if (vsi->netdev && netif_running(vsi->netdev)) {
3529                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3530         } else {
3531                 set_bit(__I40E_DOWN, &vsi->state);
3532                 i40e_down(vsi);
3533         }
3534 }
3535
3536 /**
3537  * i40e_unquiesce_vsi - Resume a given VSI
3538  * @vsi: the VSI being resumed
3539  **/
3540 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3541 {
3542         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3543                 return;
3544
3545         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3546         if (vsi->netdev && netif_running(vsi->netdev))
3547                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3548         else
3549                 i40e_up(vsi);   /* this clears the DOWN bit */
3550 }
3551
3552 /**
3553  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3554  * @pf: the PF
3555  **/
3556 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3557 {
3558         int v;
3559
3560         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3561                 if (pf->vsi[v])
3562                         i40e_quiesce_vsi(pf->vsi[v]);
3563         }
3564 }
3565
3566 /**
3567  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3568  * @pf: the PF
3569  **/
3570 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3571 {
3572         int v;
3573
3574         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3575                 if (pf->vsi[v])
3576                         i40e_unquiesce_vsi(pf->vsi[v]);
3577         }
3578 }
3579
3580 /**
3581  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
3582  * @dcbcfg: the corresponding DCBx configuration structure
3583  *
3584  * Return the number of TCs from given DCBx configuration
3585  **/
3586 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
3587 {
3588         u8 num_tc = 0;
3589         int i;
3590
3591         /* Scan the ETS Config Priority Table to find
3592          * traffic class enabled for a given priority
3593          * and use the traffic class index to get the
3594          * number of traffic classes enabled
3595          */
3596         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3597                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
3598                         num_tc = dcbcfg->etscfg.prioritytable[i];
3599         }
3600
3601         /* Traffic class index starts from zero so
3602          * increment to return the actual count
3603          */
3604         return num_tc + 1;
3605 }
3606
3607 /**
3608  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
3609  * @dcbcfg: the corresponding DCBx configuration structure
3610  *
3611  * Query the current DCB configuration and return the number of
3612  * traffic classes enabled from the given DCBX config
3613  **/
3614 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
3615 {
3616         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
3617         u8 enabled_tc = 1;
3618         u8 i;
3619
3620         for (i = 0; i < num_tc; i++)
3621                 enabled_tc |= 1 << i;
3622
3623         return enabled_tc;
3624 }
3625
3626 /**
3627  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
3628  * @pf: PF being queried
3629  *
3630  * Return number of traffic classes enabled for the given PF
3631  **/
3632 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
3633 {
3634         struct i40e_hw *hw = &pf->hw;
3635         u8 i, enabled_tc;
3636         u8 num_tc = 0;
3637         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3638
3639         /* If DCB is not enabled then always in single TC */
3640         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3641                 return 1;
3642
3643         /* MFP mode return count of enabled TCs for this PF */
3644         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3645                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3646                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3647                         if (enabled_tc & (1 << i))
3648                                 num_tc++;
3649                 }
3650                 return num_tc;
3651         }
3652
3653         /* SFP mode will be enabled for all TCs on port */
3654         return i40e_dcb_get_num_tc(dcbcfg);
3655 }
3656
3657 /**
3658  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
3659  * @pf: PF being queried
3660  *
3661  * Return a bitmap for first enabled traffic class for this PF.
3662  **/
3663 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
3664 {
3665         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3666         u8 i = 0;
3667
3668         if (!enabled_tc)
3669                 return 0x1; /* TC0 */
3670
3671         /* Find the first enabled TC */
3672         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3673                 if (enabled_tc & (1 << i))
3674                         break;
3675         }
3676
3677         return 1 << i;
3678 }
3679
3680 /**
3681  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
3682  * @pf: PF being queried
3683  *
3684  * Return a bitmap for enabled traffic classes for this PF.
3685  **/
3686 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
3687 {
3688         /* If DCB is not enabled for this PF then just return default TC */
3689         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3690                 return i40e_pf_get_default_tc(pf);
3691
3692         /* MFP mode will have enabled TCs set by FW */
3693         if (pf->flags & I40E_FLAG_MFP_ENABLED)
3694                 return pf->hw.func_caps.enabled_tcmap;
3695
3696         /* SFP mode we want PF to be enabled for all TCs */
3697         return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
3698 }
3699
3700 /**
3701  * i40e_vsi_get_bw_info - Query VSI BW Information
3702  * @vsi: the VSI being queried
3703  *
3704  * Returns 0 on success, negative value on failure
3705  **/
3706 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
3707 {
3708         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
3709         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
3710         struct i40e_pf *pf = vsi->back;
3711         struct i40e_hw *hw = &pf->hw;
3712         i40e_status aq_ret;
3713         u32 tc_bw_max;
3714         int i;
3715
3716         /* Get the VSI level BW configuration */
3717         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
3718         if (aq_ret) {
3719                 dev_info(&pf->pdev->dev,
3720                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
3721                          aq_ret, pf->hw.aq.asq_last_status);
3722                 return -EINVAL;
3723         }
3724
3725         /* Get the VSI level BW configuration per TC */
3726         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
3727                                                   NULL);
3728         if (aq_ret) {
3729                 dev_info(&pf->pdev->dev,
3730                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
3731                          aq_ret, pf->hw.aq.asq_last_status);
3732                 return -EINVAL;
3733         }
3734
3735         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
3736                 dev_info(&pf->pdev->dev,
3737                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
3738                          bw_config.tc_valid_bits,
3739                          bw_ets_config.tc_valid_bits);
3740                 /* Still continuing */
3741         }
3742
3743         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
3744         vsi->bw_max_quanta = bw_config.max_bw;
3745         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
3746                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
3747         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3748                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
3749                 vsi->bw_ets_limit_credits[i] =
3750                                         le16_to_cpu(bw_ets_config.credits[i]);
3751                 /* 3 bits out of 4 for each TC */
3752                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
3753         }
3754
3755         return 0;
3756 }
3757
3758 /**
3759  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
3760  * @vsi: the VSI being configured
3761  * @enabled_tc: TC bitmap
3762  * @bw_credits: BW shared credits per TC
3763  *
3764  * Returns 0 on success, negative value on failure
3765  **/
3766 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
3767                                        u8 *bw_share)
3768 {
3769         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
3770         i40e_status aq_ret;
3771         int i;
3772
3773         bw_data.tc_valid_bits = enabled_tc;
3774         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3775                 bw_data.tc_bw_credits[i] = bw_share[i];
3776
3777         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
3778                                           NULL);
3779         if (aq_ret) {
3780                 dev_info(&vsi->back->pdev->dev,
3781                          "AQ command Config VSI BW allocation per TC failed = %d\n",
3782                          vsi->back->hw.aq.asq_last_status);
3783                 return -EINVAL;
3784         }
3785
3786         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3787                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
3788
3789         return 0;
3790 }
3791
3792 /**
3793  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
3794  * @vsi: the VSI being configured
3795  * @enabled_tc: TC map to be enabled
3796  *
3797  **/
3798 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3799 {
3800         struct net_device *netdev = vsi->netdev;
3801         struct i40e_pf *pf = vsi->back;
3802         struct i40e_hw *hw = &pf->hw;
3803         u8 netdev_tc = 0;
3804         int i;
3805         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3806
3807         if (!netdev)
3808                 return;
3809
3810         if (!enabled_tc) {
3811                 netdev_reset_tc(netdev);
3812                 return;
3813         }
3814
3815         /* Set up actual enabled TCs on the VSI */
3816         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
3817                 return;
3818
3819         /* set per TC queues for the VSI */
3820         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3821                 /* Only set TC queues for enabled tcs
3822                  *
3823                  * e.g. For a VSI that has TC0 and TC3 enabled the
3824                  * enabled_tc bitmap would be 0x00001001; the driver
3825                  * will set the numtc for netdev as 2 that will be
3826                  * referenced by the netdev layer as TC 0 and 1.
3827                  */
3828                 if (vsi->tc_config.enabled_tc & (1 << i))
3829                         netdev_set_tc_queue(netdev,
3830                                         vsi->tc_config.tc_info[i].netdev_tc,
3831                                         vsi->tc_config.tc_info[i].qcount,
3832                                         vsi->tc_config.tc_info[i].qoffset);
3833         }
3834
3835         /* Assign UP2TC map for the VSI */
3836         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3837                 /* Get the actual TC# for the UP */
3838                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
3839                 /* Get the mapped netdev TC# for the UP */
3840                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
3841                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
3842         }
3843 }
3844
3845 /**
3846  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
3847  * @vsi: the VSI being configured
3848  * @ctxt: the ctxt buffer returned from AQ VSI update param command
3849  **/
3850 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
3851                                       struct i40e_vsi_context *ctxt)
3852 {
3853         /* copy just the sections touched not the entire info
3854          * since not all sections are valid as returned by
3855          * update vsi params
3856          */
3857         vsi->info.mapping_flags = ctxt->info.mapping_flags;
3858         memcpy(&vsi->info.queue_mapping,
3859                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
3860         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
3861                sizeof(vsi->info.tc_mapping));
3862 }
3863
3864 /**
3865  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
3866  * @vsi: VSI to be configured
3867  * @enabled_tc: TC bitmap
3868  *
3869  * This configures a particular VSI for TCs that are mapped to the
3870  * given TC bitmap. It uses default bandwidth share for TCs across
3871  * VSIs to configure TC for a particular VSI.
3872  *
3873  * NOTE:
3874  * It is expected that the VSI queues have been quisced before calling
3875  * this function.
3876  **/
3877 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3878 {
3879         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
3880         struct i40e_vsi_context ctxt;
3881         int ret = 0;
3882         int i;
3883
3884         /* Check if enabled_tc is same as existing or new TCs */
3885         if (vsi->tc_config.enabled_tc == enabled_tc)
3886                 return ret;
3887
3888         /* Enable ETS TCs with equal BW Share for now across all VSIs */
3889         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3890                 if (enabled_tc & (1 << i))
3891                         bw_share[i] = 1;
3892         }
3893
3894         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
3895         if (ret) {
3896                 dev_info(&vsi->back->pdev->dev,
3897                          "Failed configuring TC map %d for VSI %d\n",
3898                          enabled_tc, vsi->seid);
3899                 goto out;
3900         }
3901
3902         /* Update Queue Pairs Mapping for currently enabled UPs */
3903         ctxt.seid = vsi->seid;
3904         ctxt.pf_num = vsi->back->hw.pf_id;
3905         ctxt.vf_num = 0;
3906         ctxt.uplink_seid = vsi->uplink_seid;
3907         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
3908         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
3909
3910         /* Update the VSI after updating the VSI queue-mapping information */
3911         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
3912         if (ret) {
3913                 dev_info(&vsi->back->pdev->dev,
3914                          "update vsi failed, aq_err=%d\n",
3915                          vsi->back->hw.aq.asq_last_status);
3916                 goto out;
3917         }
3918         /* update the local VSI info with updated queue map */
3919         i40e_vsi_update_queue_map(vsi, &ctxt);
3920         vsi->info.valid_sections = 0;
3921
3922         /* Update current VSI BW information */
3923         ret = i40e_vsi_get_bw_info(vsi);
3924         if (ret) {
3925                 dev_info(&vsi->back->pdev->dev,
3926                          "Failed updating vsi bw info, aq_err=%d\n",
3927                          vsi->back->hw.aq.asq_last_status);
3928                 goto out;
3929         }
3930
3931         /* Update the netdev TC setup */
3932         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
3933 out:
3934         return ret;
3935 }
3936
3937 /**
3938  * i40e_veb_config_tc - Configure TCs for given VEB
3939  * @veb: given VEB
3940  * @enabled_tc: TC bitmap
3941  *
3942  * Configures given TC bitmap for VEB (switching) element
3943  **/
3944 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
3945 {
3946         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
3947         struct i40e_pf *pf = veb->pf;
3948         int ret = 0;
3949         int i;
3950
3951         /* No TCs or already enabled TCs just return */
3952         if (!enabled_tc || veb->enabled_tc == enabled_tc)
3953                 return ret;
3954
3955         bw_data.tc_valid_bits = enabled_tc;
3956         /* bw_data.absolute_credits is not set (relative) */
3957
3958         /* Enable ETS TCs with equal BW Share for now */
3959         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3960                 if (enabled_tc & (1 << i))
3961                         bw_data.tc_bw_share_credits[i] = 1;
3962         }
3963
3964         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
3965                                                    &bw_data, NULL);
3966         if (ret) {
3967                 dev_info(&pf->pdev->dev,
3968                          "veb bw config failed, aq_err=%d\n",
3969                          pf->hw.aq.asq_last_status);
3970                 goto out;
3971         }
3972
3973         /* Update the BW information */
3974         ret = i40e_veb_get_bw_info(veb);
3975         if (ret) {
3976                 dev_info(&pf->pdev->dev,
3977                          "Failed getting veb bw config, aq_err=%d\n",
3978                          pf->hw.aq.asq_last_status);
3979         }
3980
3981 out:
3982         return ret;
3983 }
3984
3985 #ifdef CONFIG_I40E_DCB
3986 /**
3987  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
3988  * @pf: PF struct
3989  *
3990  * Reconfigure VEB/VSIs on a given PF; it is assumed that
3991  * the caller would've quiesce all the VSIs before calling
3992  * this function
3993  **/
3994 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
3995 {
3996         u8 tc_map = 0;
3997         int ret;
3998         u8 v;
3999
4000         /* Enable the TCs available on PF to all VEBs */
4001         tc_map = i40e_pf_get_tc_map(pf);
4002         for (v = 0; v < I40E_MAX_VEB; v++) {
4003                 if (!pf->veb[v])
4004                         continue;
4005                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4006                 if (ret) {
4007                         dev_info(&pf->pdev->dev,
4008                                  "Failed configuring TC for VEB seid=%d\n",
4009                                  pf->veb[v]->seid);
4010                         /* Will try to configure as many components */
4011                 }
4012         }
4013
4014         /* Update each VSI */
4015         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4016                 if (!pf->vsi[v])
4017                         continue;
4018
4019                 /* - Enable all TCs for the LAN VSI
4020                  * - For all others keep them at TC0 for now
4021                  */
4022                 if (v == pf->lan_vsi)
4023                         tc_map = i40e_pf_get_tc_map(pf);
4024                 else
4025                         tc_map = i40e_pf_get_default_tc(pf);
4026
4027                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4028                 if (ret) {
4029                         dev_info(&pf->pdev->dev,
4030                                  "Failed configuring TC for VSI seid=%d\n",
4031                                  pf->vsi[v]->seid);
4032                         /* Will try to configure as many components */
4033                 } else {
4034                         if (pf->vsi[v]->netdev)
4035                                 i40e_dcbnl_set_all(pf->vsi[v]);
4036                 }
4037         }
4038 }
4039
4040 /**
4041  * i40e_init_pf_dcb - Initialize DCB configuration
4042  * @pf: PF being configured
4043  *
4044  * Query the current DCB configuration and cache it
4045  * in the hardware structure
4046  **/
4047 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4048 {
4049         struct i40e_hw *hw = &pf->hw;
4050         int err = 0;
4051
4052         if (pf->hw.func_caps.npar_enable)
4053                 goto out;
4054
4055         /* Get the initial DCB configuration */
4056         err = i40e_init_dcb(hw);
4057         if (!err) {
4058                 /* Device/Function is not DCBX capable */
4059                 if ((!hw->func_caps.dcb) ||
4060                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4061                         dev_info(&pf->pdev->dev,
4062                                  "DCBX offload is not supported or is disabled for this PF.\n");
4063
4064                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4065                                 goto out;
4066
4067                 } else {
4068                         /* When status is not DISABLED then DCBX in FW */
4069                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4070                                        DCB_CAP_DCBX_VER_IEEE;
4071                         pf->flags |= I40E_FLAG_DCB_ENABLED;
4072                 }
4073         }
4074
4075 out:
4076         return err;
4077 }
4078 #endif /* CONFIG_I40E_DCB */
4079
4080 /**
4081  * i40e_up_complete - Finish the last steps of bringing up a connection
4082  * @vsi: the VSI being configured
4083  **/
4084 static int i40e_up_complete(struct i40e_vsi *vsi)
4085 {
4086         struct i40e_pf *pf = vsi->back;
4087         int err;
4088
4089         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4090                 i40e_vsi_configure_msix(vsi);
4091         else
4092                 i40e_configure_msi_and_legacy(vsi);
4093
4094         /* start rings */
4095         err = i40e_vsi_control_rings(vsi, true);
4096         if (err)
4097                 return err;
4098
4099         clear_bit(__I40E_DOWN, &vsi->state);
4100         i40e_napi_enable_all(vsi);
4101         i40e_vsi_enable_irq(vsi);
4102
4103         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4104             (vsi->netdev)) {
4105                 netdev_info(vsi->netdev, "NIC Link is Up\n");
4106                 netif_tx_start_all_queues(vsi->netdev);
4107                 netif_carrier_on(vsi->netdev);
4108         } else if (vsi->netdev) {
4109                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4110         }
4111
4112         /* replay FDIR SB filters */
4113         if (vsi->type == I40E_VSI_FDIR)
4114                 i40e_fdir_filter_restore(vsi);
4115         i40e_service_event_schedule(pf);
4116
4117         return 0;
4118 }
4119
4120 /**
4121  * i40e_vsi_reinit_locked - Reset the VSI
4122  * @vsi: the VSI being configured
4123  *
4124  * Rebuild the ring structs after some configuration
4125  * has changed, e.g. MTU size.
4126  **/
4127 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4128 {
4129         struct i40e_pf *pf = vsi->back;
4130
4131         WARN_ON(in_interrupt());
4132         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4133                 usleep_range(1000, 2000);
4134         i40e_down(vsi);
4135
4136         /* Give a VF some time to respond to the reset.  The
4137          * two second wait is based upon the watchdog cycle in
4138          * the VF driver.
4139          */
4140         if (vsi->type == I40E_VSI_SRIOV)
4141                 msleep(2000);
4142         i40e_up(vsi);
4143         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4144 }
4145
4146 /**
4147  * i40e_up - Bring the connection back up after being down
4148  * @vsi: the VSI being configured
4149  **/
4150 int i40e_up(struct i40e_vsi *vsi)
4151 {
4152         int err;
4153
4154         err = i40e_vsi_configure(vsi);
4155         if (!err)
4156                 err = i40e_up_complete(vsi);
4157
4158         return err;
4159 }
4160
4161 /**
4162  * i40e_down - Shutdown the connection processing
4163  * @vsi: the VSI being stopped
4164  **/
4165 void i40e_down(struct i40e_vsi *vsi)
4166 {
4167         int i;
4168
4169         /* It is assumed that the caller of this function
4170          * sets the vsi->state __I40E_DOWN bit.
4171          */
4172         if (vsi->netdev) {
4173                 netif_carrier_off(vsi->netdev);
4174                 netif_tx_disable(vsi->netdev);
4175         }
4176         i40e_vsi_disable_irq(vsi);
4177         i40e_vsi_control_rings(vsi, false);
4178         i40e_napi_disable_all(vsi);
4179
4180         for (i = 0; i < vsi->num_queue_pairs; i++) {
4181                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4182                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4183         }
4184 }
4185
4186 /**
4187  * i40e_setup_tc - configure multiple traffic classes
4188  * @netdev: net device to configure
4189  * @tc: number of traffic classes to enable
4190  **/
4191 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4192 {
4193         struct i40e_netdev_priv *np = netdev_priv(netdev);
4194         struct i40e_vsi *vsi = np->vsi;
4195         struct i40e_pf *pf = vsi->back;
4196         u8 enabled_tc = 0;
4197         int ret = -EINVAL;
4198         int i;
4199
4200         /* Check if DCB enabled to continue */
4201         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4202                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4203                 goto exit;
4204         }
4205
4206         /* Check if MFP enabled */
4207         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4208                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4209                 goto exit;
4210         }
4211
4212         /* Check whether tc count is within enabled limit */
4213         if (tc > i40e_pf_get_num_tc(pf)) {
4214                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4215                 goto exit;
4216         }
4217
4218         /* Generate TC map for number of tc requested */
4219         for (i = 0; i < tc; i++)
4220                 enabled_tc |= (1 << i);
4221
4222         /* Requesting same TC configuration as already enabled */
4223         if (enabled_tc == vsi->tc_config.enabled_tc)
4224                 return 0;
4225
4226         /* Quiesce VSI queues */
4227         i40e_quiesce_vsi(vsi);
4228
4229         /* Configure VSI for enabled TCs */
4230         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4231         if (ret) {
4232                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4233                             vsi->seid);
4234                 goto exit;
4235         }
4236
4237         /* Unquiesce VSI */
4238         i40e_unquiesce_vsi(vsi);
4239
4240 exit:
4241         return ret;
4242 }
4243
4244 /**
4245  * i40e_open - Called when a network interface is made active
4246  * @netdev: network interface device structure
4247  *
4248  * The open entry point is called when a network interface is made
4249  * active by the system (IFF_UP).  At this point all resources needed
4250  * for transmit and receive operations are allocated, the interrupt
4251  * handler is registered with the OS, the netdev watchdog subtask is
4252  * enabled, and the stack is notified that the interface is ready.
4253  *
4254  * Returns 0 on success, negative value on failure
4255  **/
4256 static int i40e_open(struct net_device *netdev)
4257 {
4258         struct i40e_netdev_priv *np = netdev_priv(netdev);
4259         struct i40e_vsi *vsi = np->vsi;
4260         struct i40e_pf *pf = vsi->back;
4261         int err;
4262
4263         /* disallow open during test or if eeprom is broken */
4264         if (test_bit(__I40E_TESTING, &pf->state) ||
4265             test_bit(__I40E_BAD_EEPROM, &pf->state))
4266                 return -EBUSY;
4267
4268         netif_carrier_off(netdev);
4269
4270         err = i40e_vsi_open(vsi);
4271         if (err)
4272                 return err;
4273
4274         /* configure global TSO hardware offload settings */
4275         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4276                                                        TCP_FLAG_FIN) >> 16);
4277         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4278                                                        TCP_FLAG_FIN |
4279                                                        TCP_FLAG_CWR) >> 16);
4280         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4281
4282 #ifdef CONFIG_I40E_VXLAN
4283         vxlan_get_rx_port(netdev);
4284 #endif
4285
4286         return 0;
4287 }
4288
4289 /**
4290  * i40e_vsi_open -
4291  * @vsi: the VSI to open
4292  *
4293  * Finish initialization of the VSI.
4294  *
4295  * Returns 0 on success, negative value on failure
4296  **/
4297 int i40e_vsi_open(struct i40e_vsi *vsi)
4298 {
4299         struct i40e_pf *pf = vsi->back;
4300         char int_name[IFNAMSIZ];
4301         int err;
4302
4303         /* allocate descriptors */
4304         err = i40e_vsi_setup_tx_resources(vsi);
4305         if (err)
4306                 goto err_setup_tx;
4307         err = i40e_vsi_setup_rx_resources(vsi);
4308         if (err)
4309                 goto err_setup_rx;
4310
4311         err = i40e_vsi_configure(vsi);
4312         if (err)
4313                 goto err_setup_rx;
4314
4315         if (!vsi->netdev) {
4316                 err = EINVAL;
4317                 goto err_setup_rx;
4318         }
4319         snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4320                  dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4321         err = i40e_vsi_request_irq(vsi, int_name);
4322         if (err)
4323                 goto err_setup_rx;
4324
4325         /* Notify the stack of the actual queue counts. */
4326         err = netif_set_real_num_tx_queues(vsi->netdev, vsi->num_queue_pairs);
4327         if (err)
4328                 goto err_set_queues;
4329
4330         err = netif_set_real_num_rx_queues(vsi->netdev, vsi->num_queue_pairs);
4331         if (err)
4332                 goto err_set_queues;
4333
4334         err = i40e_up_complete(vsi);
4335         if (err)
4336                 goto err_up_complete;
4337
4338         return 0;
4339
4340 err_up_complete:
4341         i40e_down(vsi);
4342 err_set_queues:
4343         i40e_vsi_free_irq(vsi);
4344 err_setup_rx:
4345         i40e_vsi_free_rx_resources(vsi);
4346 err_setup_tx:
4347         i40e_vsi_free_tx_resources(vsi);
4348         if (vsi == pf->vsi[pf->lan_vsi])
4349                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4350
4351         return err;
4352 }
4353
4354 /**
4355  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4356  * @pf: Pointer to pf
4357  *
4358  * This function destroys the hlist where all the Flow Director
4359  * filters were saved.
4360  **/
4361 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4362 {
4363         struct i40e_fdir_filter *filter;
4364         struct hlist_node *node2;
4365
4366         hlist_for_each_entry_safe(filter, node2,
4367                                   &pf->fdir_filter_list, fdir_node) {
4368                 hlist_del(&filter->fdir_node);
4369                 kfree(filter);
4370         }
4371         pf->fdir_pf_active_filters = 0;
4372 }
4373
4374 /**
4375  * i40e_close - Disables a network interface
4376  * @netdev: network interface device structure
4377  *
4378  * The close entry point is called when an interface is de-activated
4379  * by the OS.  The hardware is still under the driver's control, but
4380  * this netdev interface is disabled.
4381  *
4382  * Returns 0, this is not allowed to fail
4383  **/
4384 static int i40e_close(struct net_device *netdev)
4385 {
4386         struct i40e_netdev_priv *np = netdev_priv(netdev);
4387         struct i40e_vsi *vsi = np->vsi;
4388
4389         if (test_and_set_bit(__I40E_DOWN, &vsi->state))
4390                 return 0;
4391
4392         i40e_down(vsi);
4393         i40e_vsi_free_irq(vsi);
4394
4395         i40e_vsi_free_tx_resources(vsi);
4396         i40e_vsi_free_rx_resources(vsi);
4397
4398         return 0;
4399 }
4400
4401 /**
4402  * i40e_do_reset - Start a PF or Core Reset sequence
4403  * @pf: board private structure
4404  * @reset_flags: which reset is requested
4405  *
4406  * The essential difference in resets is that the PF Reset
4407  * doesn't clear the packet buffers, doesn't reset the PE
4408  * firmware, and doesn't bother the other PFs on the chip.
4409  **/
4410 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
4411 {
4412         u32 val;
4413
4414         WARN_ON(in_interrupt());
4415
4416         /* do the biggest reset indicated */
4417         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
4418
4419                 /* Request a Global Reset
4420                  *
4421                  * This will start the chip's countdown to the actual full
4422                  * chip reset event, and a warning interrupt to be sent
4423                  * to all PFs, including the requestor.  Our handler
4424                  * for the warning interrupt will deal with the shutdown
4425                  * and recovery of the switch setup.
4426                  */
4427                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
4428                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4429                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
4430                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4431
4432         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
4433
4434                 /* Request a Core Reset
4435                  *
4436                  * Same as Global Reset, except does *not* include the MAC/PHY
4437                  */
4438                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
4439                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4440                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
4441                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4442                 i40e_flush(&pf->hw);
4443
4444         } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
4445
4446                 /* Request a Firmware Reset
4447                  *
4448                  * Same as Global reset, plus restarting the
4449                  * embedded firmware engine.
4450                  */
4451                 /* enable EMP Reset */
4452                 val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
4453                 val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
4454                 wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
4455
4456                 /* force the reset */
4457                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4458                 val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
4459                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4460                 i40e_flush(&pf->hw);
4461
4462         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
4463
4464                 /* Request a PF Reset
4465                  *
4466                  * Resets only the PF-specific registers
4467                  *
4468                  * This goes directly to the tear-down and rebuild of
4469                  * the switch, since we need to do all the recovery as
4470                  * for the Core Reset.
4471                  */
4472                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
4473                 i40e_handle_reset_warning(pf);
4474
4475         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
4476                 int v;
4477
4478                 /* Find the VSI(s) that requested a re-init */
4479                 dev_info(&pf->pdev->dev,
4480                          "VSI reinit requested\n");
4481                 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4482                         struct i40e_vsi *vsi = pf->vsi[v];
4483                         if (vsi != NULL &&
4484                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
4485                                 i40e_vsi_reinit_locked(pf->vsi[v]);
4486                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
4487                         }
4488                 }
4489
4490                 /* no further action needed, so return now */
4491                 return;
4492         } else {
4493                 dev_info(&pf->pdev->dev,
4494                          "bad reset request 0x%08x\n", reset_flags);
4495                 return;
4496         }
4497 }
4498
4499 #ifdef CONFIG_I40E_DCB
4500 /**
4501  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
4502  * @pf: board private structure
4503  * @old_cfg: current DCB config
4504  * @new_cfg: new DCB config
4505  **/
4506 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
4507                             struct i40e_dcbx_config *old_cfg,
4508                             struct i40e_dcbx_config *new_cfg)
4509 {
4510         bool need_reconfig = false;
4511
4512         /* Check if ETS configuration has changed */
4513         if (memcmp(&new_cfg->etscfg,
4514                    &old_cfg->etscfg,
4515                    sizeof(new_cfg->etscfg))) {
4516                 /* If Priority Table has changed reconfig is needed */
4517                 if (memcmp(&new_cfg->etscfg.prioritytable,
4518                            &old_cfg->etscfg.prioritytable,
4519                            sizeof(new_cfg->etscfg.prioritytable))) {
4520                         need_reconfig = true;
4521                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
4522                 }
4523
4524                 if (memcmp(&new_cfg->etscfg.tcbwtable,
4525                            &old_cfg->etscfg.tcbwtable,
4526                            sizeof(new_cfg->etscfg.tcbwtable)))
4527                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
4528
4529                 if (memcmp(&new_cfg->etscfg.tsatable,
4530                            &old_cfg->etscfg.tsatable,
4531                            sizeof(new_cfg->etscfg.tsatable)))
4532                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
4533         }
4534
4535         /* Check if PFC configuration has changed */
4536         if (memcmp(&new_cfg->pfc,
4537                    &old_cfg->pfc,
4538                    sizeof(new_cfg->pfc))) {
4539                 need_reconfig = true;
4540                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
4541         }
4542
4543         /* Check if APP Table has changed */
4544         if (memcmp(&new_cfg->app,
4545                    &old_cfg->app,
4546                    sizeof(new_cfg->app))) {
4547                 need_reconfig = true;
4548                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
4549         }
4550
4551         return need_reconfig;
4552 }
4553
4554 /**
4555  * i40e_handle_lldp_event - Handle LLDP Change MIB event
4556  * @pf: board private structure
4557  * @e: event info posted on ARQ
4558  **/
4559 static int i40e_handle_lldp_event(struct i40e_pf *pf,
4560                                   struct i40e_arq_event_info *e)
4561 {
4562         struct i40e_aqc_lldp_get_mib *mib =
4563                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
4564         struct i40e_hw *hw = &pf->hw;
4565         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
4566         struct i40e_dcbx_config tmp_dcbx_cfg;
4567         bool need_reconfig = false;
4568         int ret = 0;
4569         u8 type;
4570
4571         /* Ignore if event is not for Nearest Bridge */
4572         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
4573                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
4574         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
4575                 return ret;
4576
4577         /* Check MIB Type and return if event for Remote MIB update */
4578         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
4579         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
4580                 /* Update the remote cached instance and return */
4581                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
4582                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
4583                                 &hw->remote_dcbx_config);
4584                 goto exit;
4585         }
4586
4587         /* Convert/store the DCBX data from LLDPDU temporarily */
4588         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
4589         ret = i40e_lldp_to_dcb_config(e->msg_buf, &tmp_dcbx_cfg);
4590         if (ret) {
4591                 /* Error in LLDPDU parsing return */
4592                 dev_info(&pf->pdev->dev, "Failed parsing LLDPDU from event buffer\n");
4593                 goto exit;
4594         }
4595
4596         /* No change detected in DCBX configs */
4597         if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
4598                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
4599                 goto exit;
4600         }
4601
4602         need_reconfig = i40e_dcb_need_reconfig(pf, dcbx_cfg, &tmp_dcbx_cfg);
4603
4604         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg);
4605
4606         /* Overwrite the new configuration */
4607         *dcbx_cfg = tmp_dcbx_cfg;
4608
4609         if (!need_reconfig)
4610                 goto exit;
4611
4612         /* Reconfiguration needed quiesce all VSIs */
4613         i40e_pf_quiesce_all_vsi(pf);
4614
4615         /* Changes in configuration update VEB/VSI */
4616         i40e_dcb_reconfigure(pf);
4617
4618         i40e_pf_unquiesce_all_vsi(pf);
4619 exit:
4620         return ret;
4621 }
4622 #endif /* CONFIG_I40E_DCB */
4623
4624 /**
4625  * i40e_do_reset_safe - Protected reset path for userland calls.
4626  * @pf: board private structure
4627  * @reset_flags: which reset is requested
4628  *
4629  **/
4630 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
4631 {
4632         rtnl_lock();
4633         i40e_do_reset(pf, reset_flags);
4634         rtnl_unlock();
4635 }
4636
4637 /**
4638  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
4639  * @pf: board private structure
4640  * @e: event info posted on ARQ
4641  *
4642  * Handler for LAN Queue Overflow Event generated by the firmware for PF
4643  * and VF queues
4644  **/
4645 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
4646                                            struct i40e_arq_event_info *e)
4647 {
4648         struct i40e_aqc_lan_overflow *data =
4649                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
4650         u32 queue = le32_to_cpu(data->prtdcb_rupto);
4651         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
4652         struct i40e_hw *hw = &pf->hw;
4653         struct i40e_vf *vf;
4654         u16 vf_id;
4655
4656         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
4657                 queue, qtx_ctl);
4658
4659         /* Queue belongs to VF, find the VF and issue VF reset */
4660         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
4661             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
4662                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
4663                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
4664                 vf_id -= hw->func_caps.vf_base_id;
4665                 vf = &pf->vf[vf_id];
4666                 i40e_vc_notify_vf_reset(vf);
4667                 /* Allow VF to process pending reset notification */
4668                 msleep(20);
4669                 i40e_reset_vf(vf, false);
4670         }
4671 }
4672
4673 /**
4674  * i40e_service_event_complete - Finish up the service event
4675  * @pf: board private structure
4676  **/
4677 static void i40e_service_event_complete(struct i40e_pf *pf)
4678 {
4679         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
4680
4681         /* flush memory to make sure state is correct before next watchog */
4682         smp_mb__before_clear_bit();
4683         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
4684 }
4685
4686 /**
4687  * i40e_get_current_fd_count - Get the count of FD filters programmed in the HW
4688  * @pf: board private structure
4689  **/
4690 int i40e_get_current_fd_count(struct i40e_pf *pf)
4691 {
4692         int val, fcnt_prog;
4693         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
4694         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
4695                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
4696                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
4697         return fcnt_prog;
4698 }
4699
4700 /**
4701  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
4702  * @pf: board private structure
4703  **/
4704 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
4705 {
4706         u32 fcnt_prog, fcnt_avail;
4707
4708         /* Check if, FD SB or ATR was auto disabled and if there is enough room
4709          * to re-enable
4710          */
4711         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4712             (pf->flags & I40E_FLAG_FD_SB_ENABLED))
4713                 return;
4714         fcnt_prog = i40e_get_current_fd_count(pf);
4715         fcnt_avail = pf->hw.fdir_shared_filter_count +
4716                                                pf->fdir_pf_filter_count;
4717         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) {
4718                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
4719                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
4720                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
4721                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
4722                 }
4723         }
4724         /* Wait for some more space to be available to turn on ATR */
4725         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
4726                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4727                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
4728                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4729                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
4730                 }
4731         }
4732 }
4733
4734 /**
4735  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
4736  * @pf: board private structure
4737  **/
4738 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
4739 {
4740         if (!(pf->flags & I40E_FLAG_FDIR_REQUIRES_REINIT))
4741                 return;
4742
4743         /* if interface is down do nothing */
4744         if (test_bit(__I40E_DOWN, &pf->state))
4745                 return;
4746         i40e_fdir_check_and_reenable(pf);
4747
4748         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4749             (pf->flags & I40E_FLAG_FD_SB_ENABLED))
4750                 pf->flags &= ~I40E_FLAG_FDIR_REQUIRES_REINIT;
4751 }
4752
4753 /**
4754  * i40e_vsi_link_event - notify VSI of a link event
4755  * @vsi: vsi to be notified
4756  * @link_up: link up or down
4757  **/
4758 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
4759 {
4760         if (!vsi)
4761                 return;
4762
4763         switch (vsi->type) {
4764         case I40E_VSI_MAIN:
4765                 if (!vsi->netdev || !vsi->netdev_registered)
4766                         break;
4767
4768                 if (link_up) {
4769                         netif_carrier_on(vsi->netdev);
4770                         netif_tx_wake_all_queues(vsi->netdev);
4771                 } else {
4772                         netif_carrier_off(vsi->netdev);
4773                         netif_tx_stop_all_queues(vsi->netdev);
4774                 }
4775                 break;
4776
4777         case I40E_VSI_SRIOV:
4778                 break;
4779
4780         case I40E_VSI_VMDQ2:
4781         case I40E_VSI_CTRL:
4782         case I40E_VSI_MIRROR:
4783         default:
4784                 /* there is no notification for other VSIs */
4785                 break;
4786         }
4787 }
4788
4789 /**
4790  * i40e_veb_link_event - notify elements on the veb of a link event
4791  * @veb: veb to be notified
4792  * @link_up: link up or down
4793  **/
4794 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
4795 {
4796         struct i40e_pf *pf;
4797         int i;
4798
4799         if (!veb || !veb->pf)
4800                 return;
4801         pf = veb->pf;
4802
4803         /* depth first... */
4804         for (i = 0; i < I40E_MAX_VEB; i++)
4805                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
4806                         i40e_veb_link_event(pf->veb[i], link_up);
4807
4808         /* ... now the local VSIs */
4809         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4810                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
4811                         i40e_vsi_link_event(pf->vsi[i], link_up);
4812 }
4813
4814 /**
4815  * i40e_link_event - Update netif_carrier status
4816  * @pf: board private structure
4817  **/
4818 static void i40e_link_event(struct i40e_pf *pf)
4819 {
4820         bool new_link, old_link;
4821
4822         new_link = (pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP);
4823         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
4824
4825         if (new_link == old_link)
4826                 return;
4827
4828         if (!test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state))
4829                 netdev_info(pf->vsi[pf->lan_vsi]->netdev,
4830                             "NIC Link is %s\n", (new_link ? "Up" : "Down"));
4831
4832         /* Notify the base of the switch tree connected to
4833          * the link.  Floating VEBs are not notified.
4834          */
4835         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
4836                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
4837         else
4838                 i40e_vsi_link_event(pf->vsi[pf->lan_vsi], new_link);
4839
4840         if (pf->vf)
4841                 i40e_vc_notify_link_state(pf);
4842
4843         if (pf->flags & I40E_FLAG_PTP)
4844                 i40e_ptp_set_increment(pf);
4845 }
4846
4847 /**
4848  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
4849  * @pf: board private structure
4850  *
4851  * Set the per-queue flags to request a check for stuck queues in the irq
4852  * clean functions, then force interrupts to be sure the irq clean is called.
4853  **/
4854 static void i40e_check_hang_subtask(struct i40e_pf *pf)
4855 {
4856         int i, v;
4857
4858         /* If we're down or resetting, just bail */
4859         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
4860                 return;
4861
4862         /* for each VSI/netdev
4863          *     for each Tx queue
4864          *         set the check flag
4865          *     for each q_vector
4866          *         force an interrupt
4867          */
4868         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4869                 struct i40e_vsi *vsi = pf->vsi[v];
4870                 int armed = 0;
4871
4872                 if (!pf->vsi[v] ||
4873                     test_bit(__I40E_DOWN, &vsi->state) ||
4874                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
4875                         continue;
4876
4877                 for (i = 0; i < vsi->num_queue_pairs; i++) {
4878                         set_check_for_tx_hang(vsi->tx_rings[i]);
4879                         if (test_bit(__I40E_HANG_CHECK_ARMED,
4880                                      &vsi->tx_rings[i]->state))
4881                                 armed++;
4882                 }
4883
4884                 if (armed) {
4885                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
4886                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
4887                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
4888                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
4889                         } else {
4890                                 u16 vec = vsi->base_vector - 1;
4891                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
4892                                            I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
4893                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
4894                                         wr32(&vsi->back->hw,
4895                                              I40E_PFINT_DYN_CTLN(vec), val);
4896                         }
4897                         i40e_flush(&vsi->back->hw);
4898                 }
4899         }
4900 }
4901
4902 /**
4903  * i40e_watchdog_subtask - Check and bring link up
4904  * @pf: board private structure
4905  **/
4906 static void i40e_watchdog_subtask(struct i40e_pf *pf)
4907 {
4908         int i;
4909
4910         /* if interface is down do nothing */
4911         if (test_bit(__I40E_DOWN, &pf->state) ||
4912             test_bit(__I40E_CONFIG_BUSY, &pf->state))
4913                 return;
4914
4915         /* Update the stats for active netdevs so the network stack
4916          * can look at updated numbers whenever it cares to
4917          */
4918         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4919                 if (pf->vsi[i] && pf->vsi[i]->netdev)
4920                         i40e_update_stats(pf->vsi[i]);
4921
4922         /* Update the stats for the active switching components */
4923         for (i = 0; i < I40E_MAX_VEB; i++)
4924                 if (pf->veb[i])
4925                         i40e_update_veb_stats(pf->veb[i]);
4926
4927         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
4928 }
4929
4930 /**
4931  * i40e_reset_subtask - Set up for resetting the device and driver
4932  * @pf: board private structure
4933  **/
4934 static void i40e_reset_subtask(struct i40e_pf *pf)
4935 {
4936         u32 reset_flags = 0;
4937
4938         rtnl_lock();
4939         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
4940                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
4941                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
4942         }
4943         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
4944                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
4945                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4946         }
4947         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
4948                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
4949                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
4950         }
4951         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
4952                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
4953                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
4954         }
4955
4956         /* If there's a recovery already waiting, it takes
4957          * precedence before starting a new reset sequence.
4958          */
4959         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
4960                 i40e_handle_reset_warning(pf);
4961                 goto unlock;
4962         }
4963
4964         /* If we're already down or resetting, just bail */
4965         if (reset_flags &&
4966             !test_bit(__I40E_DOWN, &pf->state) &&
4967             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
4968                 i40e_do_reset(pf, reset_flags);
4969
4970 unlock:
4971         rtnl_unlock();
4972 }
4973
4974 /**
4975  * i40e_handle_link_event - Handle link event
4976  * @pf: board private structure
4977  * @e: event info posted on ARQ
4978  **/
4979 static void i40e_handle_link_event(struct i40e_pf *pf,
4980                                    struct i40e_arq_event_info *e)
4981 {
4982         struct i40e_hw *hw = &pf->hw;
4983         struct i40e_aqc_get_link_status *status =
4984                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
4985         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
4986
4987         /* save off old link status information */
4988         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
4989                sizeof(pf->hw.phy.link_info_old));
4990
4991         /* update link status */
4992         hw_link_info->phy_type = (enum i40e_aq_phy_type)status->phy_type;
4993         hw_link_info->link_speed = (enum i40e_aq_link_speed)status->link_speed;
4994         hw_link_info->link_info = status->link_info;
4995         hw_link_info->an_info = status->an_info;
4996         hw_link_info->ext_info = status->ext_info;
4997         hw_link_info->lse_enable =
4998                 le16_to_cpu(status->command_flags) &
4999                             I40E_AQ_LSE_ENABLE;
5000
5001         /* process the event */
5002         i40e_link_event(pf);
5003
5004         /* Do a new status request to re-enable LSE reporting
5005          * and load new status information into the hw struct,
5006          * then see if the status changed while processing the
5007          * initial event.
5008          */
5009         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
5010         i40e_link_event(pf);
5011 }
5012
5013 /**
5014  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5015  * @pf: board private structure
5016  **/
5017 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5018 {
5019         struct i40e_arq_event_info event;
5020         struct i40e_hw *hw = &pf->hw;
5021         u16 pending, i = 0;
5022         i40e_status ret;
5023         u16 opcode;
5024         u32 val;
5025
5026         if (!test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state))
5027                 return;
5028
5029         event.msg_size = I40E_MAX_AQ_BUF_SIZE;
5030         event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
5031         if (!event.msg_buf)
5032                 return;
5033
5034         do {
5035                 event.msg_size = I40E_MAX_AQ_BUF_SIZE; /* reinit each time */
5036                 ret = i40e_clean_arq_element(hw, &event, &pending);
5037                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK) {
5038                         dev_info(&pf->pdev->dev, "No ARQ event found\n");
5039                         break;
5040                 } else if (ret) {
5041                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5042                         break;
5043                 }
5044
5045                 opcode = le16_to_cpu(event.desc.opcode);
5046                 switch (opcode) {
5047
5048                 case i40e_aqc_opc_get_link_status:
5049                         i40e_handle_link_event(pf, &event);
5050                         break;
5051                 case i40e_aqc_opc_send_msg_to_pf:
5052                         ret = i40e_vc_process_vf_msg(pf,
5053                                         le16_to_cpu(event.desc.retval),
5054                                         le32_to_cpu(event.desc.cookie_high),
5055                                         le32_to_cpu(event.desc.cookie_low),
5056                                         event.msg_buf,
5057                                         event.msg_size);
5058                         break;
5059                 case i40e_aqc_opc_lldp_update_mib:
5060                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5061 #ifdef CONFIG_I40E_DCB
5062                         rtnl_lock();
5063                         ret = i40e_handle_lldp_event(pf, &event);
5064                         rtnl_unlock();
5065 #endif /* CONFIG_I40E_DCB */
5066                         break;
5067                 case i40e_aqc_opc_event_lan_overflow:
5068                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5069                         i40e_handle_lan_overflow_event(pf, &event);
5070                         break;
5071                 case i40e_aqc_opc_send_msg_to_peer:
5072                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5073                         break;
5074                 default:
5075                         dev_info(&pf->pdev->dev,
5076                                  "ARQ Error: Unknown event 0x%04x received\n",
5077                                  opcode);
5078                         break;
5079                 }
5080         } while (pending && (i++ < pf->adminq_work_limit));
5081
5082         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5083         /* re-enable Admin queue interrupt cause */
5084         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5085         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5086         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5087         i40e_flush(hw);
5088
5089         kfree(event.msg_buf);
5090 }
5091
5092 /**
5093  * i40e_verify_eeprom - make sure eeprom is good to use
5094  * @pf: board private structure
5095  **/
5096 static void i40e_verify_eeprom(struct i40e_pf *pf)
5097 {
5098         int err;
5099
5100         err = i40e_diag_eeprom_test(&pf->hw);
5101         if (err) {
5102                 /* retry in case of garbage read */
5103                 err = i40e_diag_eeprom_test(&pf->hw);
5104                 if (err) {
5105                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5106                                  err);
5107                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5108                 }
5109         }
5110
5111         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5112                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5113                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5114         }
5115 }
5116
5117 /**
5118  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5119  * @veb: pointer to the VEB instance
5120  *
5121  * This is a recursive function that first builds the attached VSIs then
5122  * recurses in to build the next layer of VEB.  We track the connections
5123  * through our own index numbers because the seid's from the HW could
5124  * change across the reset.
5125  **/
5126 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5127 {
5128         struct i40e_vsi *ctl_vsi = NULL;
5129         struct i40e_pf *pf = veb->pf;
5130         int v, veb_idx;
5131         int ret;
5132
5133         /* build VSI that owns this VEB, temporarily attached to base VEB */
5134         for (v = 0; v < pf->hw.func_caps.num_vsis && !ctl_vsi; v++) {
5135                 if (pf->vsi[v] &&
5136                     pf->vsi[v]->veb_idx == veb->idx &&
5137                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5138                         ctl_vsi = pf->vsi[v];
5139                         break;
5140                 }
5141         }
5142         if (!ctl_vsi) {
5143                 dev_info(&pf->pdev->dev,
5144                          "missing owner VSI for veb_idx %d\n", veb->idx);
5145                 ret = -ENOENT;
5146                 goto end_reconstitute;
5147         }
5148         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5149                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5150         ret = i40e_add_vsi(ctl_vsi);
5151         if (ret) {
5152                 dev_info(&pf->pdev->dev,
5153                          "rebuild of owner VSI failed: %d\n", ret);
5154                 goto end_reconstitute;
5155         }
5156         i40e_vsi_reset_stats(ctl_vsi);
5157
5158         /* create the VEB in the switch and move the VSI onto the VEB */
5159         ret = i40e_add_veb(veb, ctl_vsi);
5160         if (ret)
5161                 goto end_reconstitute;
5162
5163         /* create the remaining VSIs attached to this VEB */
5164         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
5165                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5166                         continue;
5167
5168                 if (pf->vsi[v]->veb_idx == veb->idx) {
5169                         struct i40e_vsi *vsi = pf->vsi[v];
5170                         vsi->uplink_seid = veb->seid;
5171                         ret = i40e_add_vsi(vsi);
5172                         if (ret) {
5173                                 dev_info(&pf->pdev->dev,
5174                                          "rebuild of vsi_idx %d failed: %d\n",
5175                                          v, ret);
5176                                 goto end_reconstitute;
5177                         }
5178                         i40e_vsi_reset_stats(vsi);
5179                 }
5180         }
5181
5182         /* create any VEBs attached to this VEB - RECURSION */
5183         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5184                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5185                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5186                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5187                         if (ret)
5188                                 break;
5189                 }
5190         }
5191
5192 end_reconstitute:
5193         return ret;
5194 }
5195
5196 /**
5197  * i40e_get_capabilities - get info about the HW
5198  * @pf: the PF struct
5199  **/
5200 static int i40e_get_capabilities(struct i40e_pf *pf)
5201 {
5202         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5203         u16 data_size;
5204         int buf_len;
5205         int err;
5206
5207         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5208         do {
5209                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5210                 if (!cap_buf)
5211                         return -ENOMEM;
5212
5213                 /* this loads the data into the hw struct for us */
5214                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5215                                             &data_size,
5216                                             i40e_aqc_opc_list_func_capabilities,
5217                                             NULL);
5218                 /* data loaded, buffer no longer needed */
5219                 kfree(cap_buf);
5220
5221                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
5222                         /* retry with a larger buffer */
5223                         buf_len = data_size;
5224                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
5225                         dev_info(&pf->pdev->dev,
5226                                  "capability discovery failed: aq=%d\n",
5227                                  pf->hw.aq.asq_last_status);
5228                         return -ENODEV;
5229                 }
5230         } while (err);
5231
5232         /* increment MSI-X count because current FW skips one */
5233         pf->hw.func_caps.num_msix_vectors++;
5234
5235         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
5236             (pf->hw.aq.fw_maj_ver < 2)) {
5237                 pf->hw.func_caps.num_msix_vectors++;
5238                 pf->hw.func_caps.num_msix_vectors_vf++;
5239         }
5240
5241         if (pf->hw.debug_mask & I40E_DEBUG_USER)
5242                 dev_info(&pf->pdev->dev,
5243                          "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",
5244                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
5245                          pf->hw.func_caps.num_msix_vectors,
5246                          pf->hw.func_caps.num_msix_vectors_vf,
5247                          pf->hw.func_caps.fd_filters_guaranteed,
5248                          pf->hw.func_caps.fd_filters_best_effort,
5249                          pf->hw.func_caps.num_tx_qp,
5250                          pf->hw.func_caps.num_vsis);
5251
5252 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
5253                        + pf->hw.func_caps.num_vfs)
5254         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
5255                 dev_info(&pf->pdev->dev,
5256                          "got num_vsis %d, setting num_vsis to %d\n",
5257                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
5258                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
5259         }
5260
5261         return 0;
5262 }
5263
5264 static int i40e_vsi_clear(struct i40e_vsi *vsi);
5265
5266 /**
5267  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
5268  * @pf: board private structure
5269  **/
5270 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
5271 {
5272         struct i40e_vsi *vsi;
5273         bool new_vsi = false;
5274         int err, i;
5275
5276         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
5277                 return;
5278
5279         /* find existing VSI and see if it needs configuring */
5280         vsi = NULL;
5281         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
5282                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5283                         vsi = pf->vsi[i];
5284                         break;
5285                 }
5286         }
5287
5288         /* create a new VSI if none exists */
5289         if (!vsi) {
5290                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
5291                                      pf->vsi[pf->lan_vsi]->seid, 0);
5292                 if (!vsi) {
5293                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
5294                         goto err_vsi;
5295                 }
5296                 new_vsi = true;
5297         }
5298         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
5299
5300         err = i40e_vsi_setup_tx_resources(vsi);
5301         if (err)
5302                 goto err_setup_tx;
5303         err = i40e_vsi_setup_rx_resources(vsi);
5304         if (err)
5305                 goto err_setup_rx;
5306
5307         if (new_vsi) {
5308                 char int_name[IFNAMSIZ + 9];
5309                 err = i40e_vsi_configure(vsi);
5310                 if (err)
5311                         goto err_setup_rx;
5312                 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
5313                          dev_driver_string(&pf->pdev->dev));
5314                 err = i40e_vsi_request_irq(vsi, int_name);
5315                 if (err)
5316                         goto err_setup_rx;
5317                 err = i40e_up_complete(vsi);
5318                 if (err)
5319                         goto err_up_complete;
5320                 clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
5321         }
5322
5323         return;
5324
5325 err_up_complete:
5326         i40e_down(vsi);
5327         i40e_vsi_free_irq(vsi);
5328 err_setup_rx:
5329         i40e_vsi_free_rx_resources(vsi);
5330 err_setup_tx:
5331         i40e_vsi_free_tx_resources(vsi);
5332 err_vsi:
5333         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
5334         i40e_vsi_clear(vsi);
5335 }
5336
5337 /**
5338  * i40e_fdir_teardown - release the Flow Director resources
5339  * @pf: board private structure
5340  **/
5341 static void i40e_fdir_teardown(struct i40e_pf *pf)
5342 {
5343         int i;
5344
5345         i40e_fdir_filter_exit(pf);
5346         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
5347                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5348                         i40e_vsi_release(pf->vsi[i]);
5349                         break;
5350                 }
5351         }
5352 }
5353
5354 /**
5355  * i40e_prep_for_reset - prep for the core to reset
5356  * @pf: board private structure
5357  *
5358  * Close up the VFs and other things in prep for pf Reset.
5359   **/
5360 static int i40e_prep_for_reset(struct i40e_pf *pf)
5361 {
5362         struct i40e_hw *hw = &pf->hw;
5363         i40e_status ret;
5364         u32 v;
5365
5366         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
5367         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
5368                 return 0;
5369
5370         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
5371
5372         if (i40e_check_asq_alive(hw))
5373                 i40e_vc_notify_reset(pf);
5374
5375         /* quiesce the VSIs and their queues that are not already DOWN */
5376         i40e_pf_quiesce_all_vsi(pf);
5377
5378         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
5379                 if (pf->vsi[v])
5380                         pf->vsi[v]->seid = 0;
5381         }
5382
5383         i40e_shutdown_adminq(&pf->hw);
5384
5385         /* call shutdown HMC */
5386         ret = i40e_shutdown_lan_hmc(hw);
5387         if (ret) {
5388                 dev_info(&pf->pdev->dev, "shutdown_lan_hmc failed: %d\n", ret);
5389                 clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
5390         }
5391         return ret;
5392 }
5393
5394 /**
5395  * i40e_reset_and_rebuild - reset and rebuild using a saved config
5396  * @pf: board private structure
5397  * @reinit: if the Main VSI needs to re-initialized.
5398  **/
5399 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
5400 {
5401         struct i40e_driver_version dv;
5402         struct i40e_hw *hw = &pf->hw;
5403         i40e_status ret;
5404         u32 v;
5405
5406         /* Now we wait for GRST to settle out.
5407          * We don't have to delete the VEBs or VSIs from the hw switch
5408          * because the reset will make them disappear.
5409          */
5410         ret = i40e_pf_reset(hw);
5411         if (ret)
5412                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
5413         pf->pfr_count++;
5414
5415         if (test_bit(__I40E_DOWN, &pf->state))
5416                 goto end_core_reset;
5417         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
5418
5419         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
5420         ret = i40e_init_adminq(&pf->hw);
5421         if (ret) {
5422                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
5423                 goto end_core_reset;
5424         }
5425
5426         /* re-verify the eeprom if we just had an EMP reset */
5427         if (test_bit(__I40E_EMP_RESET_REQUESTED, &pf->state)) {
5428                 clear_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
5429                 i40e_verify_eeprom(pf);
5430         }
5431
5432         ret = i40e_get_capabilities(pf);
5433         if (ret) {
5434                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
5435                          ret);
5436                 goto end_core_reset;
5437         }
5438
5439         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
5440                                 hw->func_caps.num_rx_qp,
5441                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
5442         if (ret) {
5443                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
5444                 goto end_core_reset;
5445         }
5446         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
5447         if (ret) {
5448                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
5449                 goto end_core_reset;
5450         }
5451
5452 #ifdef CONFIG_I40E_DCB
5453         ret = i40e_init_pf_dcb(pf);
5454         if (ret) {
5455                 dev_info(&pf->pdev->dev, "init_pf_dcb failed: %d\n", ret);
5456                 goto end_core_reset;
5457         }
5458 #endif /* CONFIG_I40E_DCB */
5459
5460         /* do basic switch setup */
5461         ret = i40e_setup_pf_switch(pf, reinit);
5462         if (ret)
5463                 goto end_core_reset;
5464
5465         /* Rebuild the VSIs and VEBs that existed before reset.
5466          * They are still in our local switch element arrays, so only
5467          * need to rebuild the switch model in the HW.
5468          *
5469          * If there were VEBs but the reconstitution failed, we'll try
5470          * try to recover minimal use by getting the basic PF VSI working.
5471          */
5472         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
5473                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
5474                 /* find the one VEB connected to the MAC, and find orphans */
5475                 for (v = 0; v < I40E_MAX_VEB; v++) {
5476                         if (!pf->veb[v])
5477                                 continue;
5478
5479                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
5480                             pf->veb[v]->uplink_seid == 0) {
5481                                 ret = i40e_reconstitute_veb(pf->veb[v]);
5482
5483                                 if (!ret)
5484                                         continue;
5485
5486                                 /* If Main VEB failed, we're in deep doodoo,
5487                                  * so give up rebuilding the switch and set up
5488                                  * for minimal rebuild of PF VSI.
5489                                  * If orphan failed, we'll report the error
5490                                  * but try to keep going.
5491                                  */
5492                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
5493                                         dev_info(&pf->pdev->dev,
5494                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
5495                                                  ret);
5496                                         pf->vsi[pf->lan_vsi]->uplink_seid
5497                                                                 = pf->mac_seid;
5498                                         break;
5499                                 } else if (pf->veb[v]->uplink_seid == 0) {
5500                                         dev_info(&pf->pdev->dev,
5501                                                  "rebuild of orphan VEB failed: %d\n",
5502                                                  ret);
5503                                 }
5504                         }
5505                 }
5506         }
5507
5508         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
5509                 dev_info(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
5510                 /* no VEB, so rebuild only the Main VSI */
5511                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
5512                 if (ret) {
5513                         dev_info(&pf->pdev->dev,
5514                                  "rebuild of Main VSI failed: %d\n", ret);
5515                         goto end_core_reset;
5516                 }
5517         }
5518
5519         /* reinit the misc interrupt */
5520         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5521                 ret = i40e_setup_misc_vector(pf);
5522
5523         /* restart the VSIs that were rebuilt and running before the reset */
5524         i40e_pf_unquiesce_all_vsi(pf);
5525
5526         if (pf->num_alloc_vfs) {
5527                 for (v = 0; v < pf->num_alloc_vfs; v++)
5528                         i40e_reset_vf(&pf->vf[v], true);
5529         }
5530
5531         /* tell the firmware that we're starting */
5532         dv.major_version = DRV_VERSION_MAJOR;
5533         dv.minor_version = DRV_VERSION_MINOR;
5534         dv.build_version = DRV_VERSION_BUILD;
5535         dv.subbuild_version = 0;
5536         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
5537
5538         dev_info(&pf->pdev->dev, "reset complete\n");
5539
5540 end_core_reset:
5541         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
5542 }
5543
5544 /**
5545  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
5546  * @pf: board private structure
5547  *
5548  * Close up the VFs and other things in prep for a Core Reset,
5549  * then get ready to rebuild the world.
5550  **/
5551 static void i40e_handle_reset_warning(struct i40e_pf *pf)
5552 {
5553         i40e_status ret;
5554
5555         ret = i40e_prep_for_reset(pf);
5556         if (!ret)
5557                 i40e_reset_and_rebuild(pf, false);
5558 }
5559
5560 /**
5561  * i40e_handle_mdd_event
5562  * @pf: pointer to the pf structure
5563  *
5564  * Called from the MDD irq handler to identify possibly malicious vfs
5565  **/
5566 static void i40e_handle_mdd_event(struct i40e_pf *pf)
5567 {
5568         struct i40e_hw *hw = &pf->hw;
5569         bool mdd_detected = false;
5570         struct i40e_vf *vf;
5571         u32 reg;
5572         int i;
5573
5574         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
5575                 return;
5576
5577         /* find what triggered the MDD event */
5578         reg = rd32(hw, I40E_GL_MDET_TX);
5579         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
5580                 u8 func = (reg & I40E_GL_MDET_TX_FUNCTION_MASK)
5581                                 >> I40E_GL_MDET_TX_FUNCTION_SHIFT;
5582                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_SHIFT)
5583                                 >> I40E_GL_MDET_TX_EVENT_SHIFT;
5584                 u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK)
5585                                 >> I40E_GL_MDET_TX_QUEUE_SHIFT;
5586                 dev_info(&pf->pdev->dev,
5587                          "Malicious Driver Detection event 0x%02x on TX queue %d of function 0x%02x\n",
5588                          event, queue, func);
5589                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
5590                 mdd_detected = true;
5591         }
5592         reg = rd32(hw, I40E_GL_MDET_RX);
5593         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
5594                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK)
5595                                 >> I40E_GL_MDET_RX_FUNCTION_SHIFT;
5596                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_SHIFT)
5597                                 >> I40E_GL_MDET_RX_EVENT_SHIFT;
5598                 u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK)
5599                                 >> I40E_GL_MDET_RX_QUEUE_SHIFT;
5600                 dev_info(&pf->pdev->dev,
5601                          "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
5602                          event, queue, func);
5603                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
5604                 mdd_detected = true;
5605         }
5606
5607         /* see if one of the VFs needs its hand slapped */
5608         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
5609                 vf = &(pf->vf[i]);
5610                 reg = rd32(hw, I40E_VP_MDET_TX(i));
5611                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
5612                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
5613                         vf->num_mdd_events++;
5614                         dev_info(&pf->pdev->dev, "MDD TX event on VF %d\n", i);
5615                 }
5616
5617                 reg = rd32(hw, I40E_VP_MDET_RX(i));
5618                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
5619                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
5620                         vf->num_mdd_events++;
5621                         dev_info(&pf->pdev->dev, "MDD RX event on VF %d\n", i);
5622                 }
5623
5624                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
5625                         dev_info(&pf->pdev->dev,
5626                                  "Too many MDD events on VF %d, disabled\n", i);
5627                         dev_info(&pf->pdev->dev,
5628                                  "Use PF Control I/F to re-enable the VF\n");
5629                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
5630                 }
5631         }
5632
5633         /* re-enable mdd interrupt cause */
5634         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
5635         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
5636         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
5637         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
5638         i40e_flush(hw);
5639 }
5640
5641 #ifdef CONFIG_I40E_VXLAN
5642 /**
5643  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
5644  * @pf: board private structure
5645  **/
5646 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
5647 {
5648         const int vxlan_hdr_qwords = 4;
5649         struct i40e_hw *hw = &pf->hw;
5650         i40e_status ret;
5651         u8 filter_index;
5652         __be16 port;
5653         int i;
5654
5655         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
5656                 return;
5657
5658         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
5659
5660         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
5661                 if (pf->pending_vxlan_bitmap & (1 << i)) {
5662                         pf->pending_vxlan_bitmap &= ~(1 << i);
5663                         port = pf->vxlan_ports[i];
5664                         ret = port ?
5665                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
5666                                                      vxlan_hdr_qwords,
5667                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
5668                                                      &filter_index, NULL)
5669                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
5670
5671                         if (ret) {
5672                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
5673                                          port ? "adding" : "deleting",
5674                                          ntohs(port), port ? i : i);
5675
5676                                 pf->vxlan_ports[i] = 0;
5677                         } else {
5678                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
5679                                          port ? "Added" : "Deleted",
5680                                          ntohs(port), port ? i : filter_index);
5681                         }
5682                 }
5683         }
5684 }
5685
5686 #endif
5687 /**
5688  * i40e_service_task - Run the driver's async subtasks
5689  * @work: pointer to work_struct containing our data
5690  **/
5691 static void i40e_service_task(struct work_struct *work)
5692 {
5693         struct i40e_pf *pf = container_of(work,
5694                                           struct i40e_pf,
5695                                           service_task);
5696         unsigned long start_time = jiffies;
5697
5698         i40e_reset_subtask(pf);
5699         i40e_handle_mdd_event(pf);
5700         i40e_vc_process_vflr_event(pf);
5701         i40e_watchdog_subtask(pf);
5702         i40e_fdir_reinit_subtask(pf);
5703         i40e_check_hang_subtask(pf);
5704         i40e_sync_filters_subtask(pf);
5705 #ifdef CONFIG_I40E_VXLAN
5706         i40e_sync_vxlan_filters_subtask(pf);
5707 #endif
5708         i40e_clean_adminq_subtask(pf);
5709
5710         i40e_service_event_complete(pf);
5711
5712         /* If the tasks have taken longer than one timer cycle or there
5713          * is more work to be done, reschedule the service task now
5714          * rather than wait for the timer to tick again.
5715          */
5716         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
5717             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
5718             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
5719             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
5720                 i40e_service_event_schedule(pf);
5721 }
5722
5723 /**
5724  * i40e_service_timer - timer callback
5725  * @data: pointer to PF struct
5726  **/
5727 static void i40e_service_timer(unsigned long data)
5728 {
5729         struct i40e_pf *pf = (struct i40e_pf *)data;
5730
5731         mod_timer(&pf->service_timer,
5732                   round_jiffies(jiffies + pf->service_timer_period));
5733         i40e_service_event_schedule(pf);
5734 }
5735
5736 /**
5737  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
5738  * @vsi: the VSI being configured
5739  **/
5740 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
5741 {
5742         struct i40e_pf *pf = vsi->back;
5743
5744         switch (vsi->type) {
5745         case I40E_VSI_MAIN:
5746                 vsi->alloc_queue_pairs = pf->num_lan_qps;
5747                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5748                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5749                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5750                         vsi->num_q_vectors = pf->num_lan_msix;
5751                 else
5752                         vsi->num_q_vectors = 1;
5753
5754                 break;
5755
5756         case I40E_VSI_FDIR:
5757                 vsi->alloc_queue_pairs = 1;
5758                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
5759                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5760                 vsi->num_q_vectors = 1;
5761                 break;
5762
5763         case I40E_VSI_VMDQ2:
5764                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
5765                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5766                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5767                 vsi->num_q_vectors = pf->num_vmdq_msix;
5768                 break;
5769
5770         case I40E_VSI_SRIOV:
5771                 vsi->alloc_queue_pairs = pf->num_vf_qps;
5772                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5773                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5774                 break;
5775
5776         default:
5777                 WARN_ON(1);
5778                 return -ENODATA;
5779         }
5780
5781         return 0;
5782 }
5783
5784 /**
5785  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
5786  * @type: VSI pointer
5787  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
5788  *
5789  * On error: returns error code (negative)
5790  * On success: returns 0
5791  **/
5792 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
5793 {
5794         int size;
5795         int ret = 0;
5796
5797         /* allocate memory for both Tx and Rx ring pointers */
5798         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
5799         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
5800         if (!vsi->tx_rings)
5801                 return -ENOMEM;
5802         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
5803
5804         if (alloc_qvectors) {
5805                 /* allocate memory for q_vector pointers */
5806                 size = sizeof(struct i40e_q_vectors *) * vsi->num_q_vectors;
5807                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
5808                 if (!vsi->q_vectors) {
5809                         ret = -ENOMEM;
5810                         goto err_vectors;
5811                 }
5812         }
5813         return ret;
5814
5815 err_vectors:
5816         kfree(vsi->tx_rings);
5817         return ret;
5818 }
5819
5820 /**
5821  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
5822  * @pf: board private structure
5823  * @type: type of VSI
5824  *
5825  * On error: returns error code (negative)
5826  * On success: returns vsi index in PF (positive)
5827  **/
5828 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
5829 {
5830         int ret = -ENODEV;
5831         struct i40e_vsi *vsi;
5832         int vsi_idx;
5833         int i;
5834
5835         /* Need to protect the allocation of the VSIs at the PF level */
5836         mutex_lock(&pf->switch_mutex);
5837
5838         /* VSI list may be fragmented if VSI creation/destruction has
5839          * been happening.  We can afford to do a quick scan to look
5840          * for any free VSIs in the list.
5841          *
5842          * find next empty vsi slot, looping back around if necessary
5843          */
5844         i = pf->next_vsi;
5845         while (i < pf->hw.func_caps.num_vsis && pf->vsi[i])
5846                 i++;
5847         if (i >= pf->hw.func_caps.num_vsis) {
5848                 i = 0;
5849                 while (i < pf->next_vsi && pf->vsi[i])
5850                         i++;
5851         }
5852
5853         if (i < pf->hw.func_caps.num_vsis && !pf->vsi[i]) {
5854                 vsi_idx = i;             /* Found one! */
5855         } else {
5856                 ret = -ENODEV;
5857                 goto unlock_pf;  /* out of VSI slots! */
5858         }
5859         pf->next_vsi = ++i;
5860
5861         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
5862         if (!vsi) {
5863                 ret = -ENOMEM;
5864                 goto unlock_pf;
5865         }
5866         vsi->type = type;
5867         vsi->back = pf;
5868         set_bit(__I40E_DOWN, &vsi->state);
5869         vsi->flags = 0;
5870         vsi->idx = vsi_idx;
5871         vsi->rx_itr_setting = pf->rx_itr_default;
5872         vsi->tx_itr_setting = pf->tx_itr_default;
5873         vsi->netdev_registered = false;
5874         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
5875         INIT_LIST_HEAD(&vsi->mac_filter_list);
5876
5877         ret = i40e_set_num_rings_in_vsi(vsi);
5878         if (ret)
5879                 goto err_rings;
5880
5881         ret = i40e_vsi_alloc_arrays(vsi, true);
5882         if (ret)
5883                 goto err_rings;
5884
5885         /* Setup default MSIX irq handler for VSI */
5886         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
5887
5888         pf->vsi[vsi_idx] = vsi;
5889         ret = vsi_idx;
5890         goto unlock_pf;
5891
5892 err_rings:
5893         pf->next_vsi = i - 1;
5894         kfree(vsi);
5895 unlock_pf:
5896         mutex_unlock(&pf->switch_mutex);
5897         return ret;
5898 }
5899
5900 /**
5901  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
5902  * @type: VSI pointer
5903  * @free_qvectors: a bool to specify if q_vectors need to be freed.
5904  *
5905  * On error: returns error code (negative)
5906  * On success: returns 0
5907  **/
5908 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
5909 {
5910         /* free the ring and vector containers */
5911         if (free_qvectors) {
5912                 kfree(vsi->q_vectors);
5913                 vsi->q_vectors = NULL;
5914         }
5915         kfree(vsi->tx_rings);
5916         vsi->tx_rings = NULL;
5917         vsi->rx_rings = NULL;
5918 }
5919
5920 /**
5921  * i40e_vsi_clear - Deallocate the VSI provided
5922  * @vsi: the VSI being un-configured
5923  **/
5924 static int i40e_vsi_clear(struct i40e_vsi *vsi)
5925 {
5926         struct i40e_pf *pf;
5927
5928         if (!vsi)
5929                 return 0;
5930
5931         if (!vsi->back)
5932                 goto free_vsi;
5933         pf = vsi->back;
5934
5935         mutex_lock(&pf->switch_mutex);
5936         if (!pf->vsi[vsi->idx]) {
5937                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
5938                         vsi->idx, vsi->idx, vsi, vsi->type);
5939                 goto unlock_vsi;
5940         }
5941
5942         if (pf->vsi[vsi->idx] != vsi) {
5943                 dev_err(&pf->pdev->dev,
5944                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
5945                         pf->vsi[vsi->idx]->idx,
5946                         pf->vsi[vsi->idx],
5947                         pf->vsi[vsi->idx]->type,
5948                         vsi->idx, vsi, vsi->type);
5949                 goto unlock_vsi;
5950         }
5951
5952         /* updates the pf for this cleared vsi */
5953         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
5954         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
5955
5956         i40e_vsi_free_arrays(vsi, true);
5957
5958         pf->vsi[vsi->idx] = NULL;
5959         if (vsi->idx < pf->next_vsi)
5960                 pf->next_vsi = vsi->idx;
5961
5962 unlock_vsi:
5963         mutex_unlock(&pf->switch_mutex);
5964 free_vsi:
5965         kfree(vsi);
5966
5967         return 0;
5968 }
5969
5970 /**
5971  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
5972  * @vsi: the VSI being cleaned
5973  **/
5974 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
5975 {
5976         int i;
5977
5978         if (vsi->tx_rings && vsi->tx_rings[0]) {
5979                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
5980                         kfree_rcu(vsi->tx_rings[i], rcu);
5981                         vsi->tx_rings[i] = NULL;
5982                         vsi->rx_rings[i] = NULL;
5983                 }
5984         }
5985 }
5986
5987 /**
5988  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
5989  * @vsi: the VSI being configured
5990  **/
5991 static int i40e_alloc_rings(struct i40e_vsi *vsi)
5992 {
5993         struct i40e_pf *pf = vsi->back;
5994         int i;
5995
5996         /* Set basic values in the rings to be used later during open() */
5997         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
5998                 struct i40e_ring *tx_ring;
5999                 struct i40e_ring *rx_ring;
6000
6001                 /* allocate space for both Tx and Rx in one shot */
6002                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6003                 if (!tx_ring)
6004                         goto err_out;
6005
6006                 tx_ring->queue_index = i;
6007                 tx_ring->reg_idx = vsi->base_queue + i;
6008                 tx_ring->ring_active = false;
6009                 tx_ring->vsi = vsi;
6010                 tx_ring->netdev = vsi->netdev;
6011                 tx_ring->dev = &pf->pdev->dev;
6012                 tx_ring->count = vsi->num_desc;
6013                 tx_ring->size = 0;
6014                 tx_ring->dcb_tc = 0;
6015                 vsi->tx_rings[i] = tx_ring;
6016
6017                 rx_ring = &tx_ring[1];
6018                 rx_ring->queue_index = i;
6019                 rx_ring->reg_idx = vsi->base_queue + i;
6020                 rx_ring->ring_active = false;
6021                 rx_ring->vsi = vsi;
6022                 rx_ring->netdev = vsi->netdev;
6023                 rx_ring->dev = &pf->pdev->dev;
6024                 rx_ring->count = vsi->num_desc;
6025                 rx_ring->size = 0;
6026                 rx_ring->dcb_tc = 0;
6027                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6028                         set_ring_16byte_desc_enabled(rx_ring);
6029                 else
6030                         clear_ring_16byte_desc_enabled(rx_ring);
6031                 vsi->rx_rings[i] = rx_ring;
6032         }
6033
6034         return 0;
6035
6036 err_out:
6037         i40e_vsi_clear_rings(vsi);
6038         return -ENOMEM;
6039 }
6040
6041 /**
6042  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6043  * @pf: board private structure
6044  * @vectors: the number of MSI-X vectors to request
6045  *
6046  * Returns the number of vectors reserved, or error
6047  **/
6048 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6049 {
6050         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6051                                         I40E_MIN_MSIX, vectors);
6052         if (vectors < 0) {
6053                 dev_info(&pf->pdev->dev,
6054                          "MSI-X vector reservation failed: %d\n", vectors);
6055                 vectors = 0;
6056         }
6057
6058         pf->num_msix_entries = vectors;
6059
6060         return vectors;
6061 }
6062
6063 /**
6064  * i40e_init_msix - Setup the MSIX capability
6065  * @pf: board private structure
6066  *
6067  * Work with the OS to set up the MSIX vectors needed.
6068  *
6069  * Returns 0 on success, negative on failure
6070  **/
6071 static int i40e_init_msix(struct i40e_pf *pf)
6072 {
6073         i40e_status err = 0;
6074         struct i40e_hw *hw = &pf->hw;
6075         int v_budget, i;
6076         int vec;
6077
6078         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6079                 return -ENODEV;
6080
6081         /* The number of vectors we'll request will be comprised of:
6082          *   - Add 1 for "other" cause for Admin Queue events, etc.
6083          *   - The number of LAN queue pairs
6084          *      - Queues being used for RSS.
6085          *              We don't need as many as max_rss_size vectors.
6086          *              use rss_size instead in the calculation since that
6087          *              is governed by number of cpus in the system.
6088          *      - assumes symmetric Tx/Rx pairing
6089          *   - The number of VMDq pairs
6090          * Once we count this up, try the request.
6091          *
6092          * If we can't get what we want, we'll simplify to nearly nothing
6093          * and try again.  If that still fails, we punt.
6094          */
6095         pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
6096         pf->num_vmdq_msix = pf->num_vmdq_qps;
6097         v_budget = 1 + pf->num_lan_msix;
6098         v_budget += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6099         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6100                 v_budget++;
6101
6102         /* Scale down if necessary, and the rings will share vectors */
6103         v_budget = min_t(int, v_budget, hw->func_caps.num_msix_vectors);
6104
6105         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6106                                    GFP_KERNEL);
6107         if (!pf->msix_entries)
6108                 return -ENOMEM;
6109
6110         for (i = 0; i < v_budget; i++)
6111                 pf->msix_entries[i].entry = i;
6112         vec = i40e_reserve_msix_vectors(pf, v_budget);
6113         if (vec < I40E_MIN_MSIX) {
6114                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6115                 kfree(pf->msix_entries);
6116                 pf->msix_entries = NULL;
6117                 return -ENODEV;
6118
6119         } else if (vec == I40E_MIN_MSIX) {
6120                 /* Adjust for minimal MSIX use */
6121                 dev_info(&pf->pdev->dev, "Features disabled, not enough MSI-X vectors\n");
6122                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
6123                 pf->num_vmdq_vsis = 0;
6124                 pf->num_vmdq_qps = 0;
6125                 pf->num_vmdq_msix = 0;
6126                 pf->num_lan_qps = 1;
6127                 pf->num_lan_msix = 1;
6128
6129         } else if (vec != v_budget) {
6130                 /* Scale vector usage down */
6131                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
6132                 vec--;                    /* reserve the misc vector */
6133
6134                 /* partition out the remaining vectors */
6135                 switch (vec) {
6136                 case 2:
6137                         pf->num_vmdq_vsis = 1;
6138                         pf->num_lan_msix = 1;
6139                         break;
6140                 case 3:
6141                         pf->num_vmdq_vsis = 1;
6142                         pf->num_lan_msix = 2;
6143                         break;
6144                 default:
6145                         pf->num_lan_msix = min_t(int, (vec / 2),
6146                                                  pf->num_lan_qps);
6147                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
6148                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
6149                         break;
6150                 }
6151         }
6152
6153         return err;
6154 }
6155
6156 /**
6157  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
6158  * @vsi: the VSI being configured
6159  * @v_idx: index of the vector in the vsi struct
6160  *
6161  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
6162  **/
6163 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
6164 {
6165         struct i40e_q_vector *q_vector;
6166
6167         /* allocate q_vector */
6168         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
6169         if (!q_vector)
6170                 return -ENOMEM;
6171
6172         q_vector->vsi = vsi;
6173         q_vector->v_idx = v_idx;
6174         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
6175         if (vsi->netdev)
6176                 netif_napi_add(vsi->netdev, &q_vector->napi,
6177                                i40e_napi_poll, vsi->work_limit);
6178
6179         q_vector->rx.latency_range = I40E_LOW_LATENCY;
6180         q_vector->tx.latency_range = I40E_LOW_LATENCY;
6181
6182         /* tie q_vector and vsi together */
6183         vsi->q_vectors[v_idx] = q_vector;
6184
6185         return 0;
6186 }
6187
6188 /**
6189  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
6190  * @vsi: the VSI being configured
6191  *
6192  * We allocate one q_vector per queue interrupt.  If allocation fails we
6193  * return -ENOMEM.
6194  **/
6195 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
6196 {
6197         struct i40e_pf *pf = vsi->back;
6198         int v_idx, num_q_vectors;
6199         int err;
6200
6201         /* if not MSIX, give the one vector only to the LAN VSI */
6202         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6203                 num_q_vectors = vsi->num_q_vectors;
6204         else if (vsi == pf->vsi[pf->lan_vsi])
6205                 num_q_vectors = 1;
6206         else
6207                 return -EINVAL;
6208
6209         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
6210                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
6211                 if (err)
6212                         goto err_out;
6213         }
6214
6215         return 0;
6216
6217 err_out:
6218         while (v_idx--)
6219                 i40e_free_q_vector(vsi, v_idx);
6220
6221         return err;
6222 }
6223
6224 /**
6225  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
6226  * @pf: board private structure to initialize
6227  **/
6228 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
6229 {
6230         int err = 0;
6231
6232         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
6233                 err = i40e_init_msix(pf);
6234                 if (err) {
6235                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
6236                                        I40E_FLAG_RSS_ENABLED    |
6237                                        I40E_FLAG_DCB_ENABLED    |
6238                                        I40E_FLAG_SRIOV_ENABLED  |
6239                                        I40E_FLAG_FD_SB_ENABLED  |
6240                                        I40E_FLAG_FD_ATR_ENABLED |
6241                                        I40E_FLAG_VMDQ_ENABLED);
6242
6243                         /* rework the queue expectations without MSIX */
6244                         i40e_determine_queue_usage(pf);
6245                 }
6246         }
6247
6248         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
6249             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
6250                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
6251                 err = pci_enable_msi(pf->pdev);
6252                 if (err) {
6253                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
6254                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
6255                 }
6256         }
6257
6258         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
6259                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
6260
6261         /* track first vector for misc interrupts */
6262         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
6263 }
6264
6265 /**
6266  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
6267  * @pf: board private structure
6268  *
6269  * This sets up the handler for MSIX 0, which is used to manage the
6270  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
6271  * when in MSI or Legacy interrupt mode.
6272  **/
6273 static int i40e_setup_misc_vector(struct i40e_pf *pf)
6274 {
6275         struct i40e_hw *hw = &pf->hw;
6276         int err = 0;
6277
6278         /* Only request the irq if this is the first time through, and
6279          * not when we're rebuilding after a Reset
6280          */
6281         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6282                 err = request_irq(pf->msix_entries[0].vector,
6283                                   i40e_intr, 0, pf->misc_int_name, pf);
6284                 if (err) {
6285                         dev_info(&pf->pdev->dev,
6286                                  "request_irq for %s failed: %d\n",
6287                                  pf->misc_int_name, err);
6288                         return -EFAULT;
6289                 }
6290         }
6291
6292         i40e_enable_misc_int_causes(hw);
6293
6294         /* associate no queues to the misc vector */
6295         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
6296         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
6297
6298         i40e_flush(hw);
6299
6300         i40e_irq_dynamic_enable_icr0(pf);
6301
6302         return err;
6303 }
6304
6305 /**
6306  * i40e_config_rss - Prepare for RSS if used
6307  * @pf: board private structure
6308  **/
6309 static int i40e_config_rss(struct i40e_pf *pf)
6310 {
6311         /* Set of random keys generated using kernel random number generator */
6312         static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
6313                                 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
6314                                 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
6315                                 0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
6316         struct i40e_hw *hw = &pf->hw;
6317         u32 lut = 0;
6318         int i, j;
6319         u64 hena;
6320
6321         /* Fill out hash function seed */
6322         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
6323                 wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
6324
6325         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
6326         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
6327                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
6328         hena |= I40E_DEFAULT_RSS_HENA;
6329         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
6330         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
6331
6332         /* Populate the LUT with max no. of queues in round robin fashion */
6333         for (i = 0, j = 0; i < pf->hw.func_caps.rss_table_size; i++, j++) {
6334
6335                 /* The assumption is that lan qp count will be the highest
6336                  * qp count for any PF VSI that needs RSS.
6337                  * If multiple VSIs need RSS support, all the qp counts
6338                  * for those VSIs should be a power of 2 for RSS to work.
6339                  * If LAN VSI is the only consumer for RSS then this requirement
6340                  * is not necessary.
6341                  */
6342                 if (j == pf->rss_size)
6343                         j = 0;
6344                 /* lut = 4-byte sliding window of 4 lut entries */
6345                 lut = (lut << 8) | (j &
6346                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
6347                 /* On i = 3, we have 4 entries in lut; write to the register */
6348                 if ((i & 3) == 3)
6349                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
6350         }
6351         i40e_flush(hw);
6352
6353         return 0;
6354 }
6355
6356 /**
6357  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
6358  * @pf: board private structure
6359  * @queue_count: the requested queue count for rss.
6360  *
6361  * returns 0 if rss is not enabled, if enabled returns the final rss queue
6362  * count which may be different from the requested queue count.
6363  **/
6364 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
6365 {
6366         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
6367                 return 0;
6368
6369         queue_count = min_t(int, queue_count, pf->rss_size_max);
6370         queue_count = rounddown_pow_of_two(queue_count);
6371
6372         if (queue_count != pf->rss_size) {
6373                 i40e_prep_for_reset(pf);
6374
6375                 pf->rss_size = queue_count;
6376
6377                 i40e_reset_and_rebuild(pf, true);
6378                 i40e_config_rss(pf);
6379         }
6380         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
6381         return pf->rss_size;
6382 }
6383
6384 /**
6385  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
6386  * @pf: board private structure to initialize
6387  *
6388  * i40e_sw_init initializes the Adapter private data structure.
6389  * Fields are initialized based on PCI device information and
6390  * OS network device settings (MTU size).
6391  **/
6392 static int i40e_sw_init(struct i40e_pf *pf)
6393 {
6394         int err = 0;
6395         int size;
6396
6397         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
6398                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
6399         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
6400         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
6401                 if (I40E_DEBUG_USER & debug)
6402                         pf->hw.debug_mask = debug;
6403                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
6404                                                 I40E_DEFAULT_MSG_ENABLE);
6405         }
6406
6407         /* Set default capability flags */
6408         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
6409                     I40E_FLAG_MSI_ENABLED     |
6410                     I40E_FLAG_MSIX_ENABLED    |
6411                     I40E_FLAG_RX_1BUF_ENABLED;
6412
6413         /* Depending on PF configurations, it is possible that the RSS
6414          * maximum might end up larger than the available queues
6415          */
6416         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
6417         pf->rss_size_max = min_t(int, pf->rss_size_max,
6418                                  pf->hw.func_caps.num_tx_qp);
6419         if (pf->hw.func_caps.rss) {
6420                 pf->flags |= I40E_FLAG_RSS_ENABLED;
6421                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
6422                 pf->rss_size = rounddown_pow_of_two(pf->rss_size);
6423         } else {
6424                 pf->rss_size = 1;
6425         }
6426
6427         /* MFP mode enabled */
6428         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
6429                 pf->flags |= I40E_FLAG_MFP_ENABLED;
6430                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
6431         }
6432
6433         /* FW/NVM is not yet fixed in this regard */
6434         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
6435             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
6436                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6437                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
6438                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
6439                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
6440                 } else {
6441                         dev_info(&pf->pdev->dev,
6442                                  "Flow Director Sideband mode Disabled in MFP mode\n");
6443                 }
6444                 pf->fdir_pf_filter_count =
6445                                  pf->hw.func_caps.fd_filters_guaranteed;
6446                 pf->hw.fdir_shared_filter_count =
6447                                  pf->hw.func_caps.fd_filters_best_effort;
6448         }
6449
6450         if (pf->hw.func_caps.vmdq) {
6451                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
6452                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
6453                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
6454         }
6455
6456 #ifdef CONFIG_PCI_IOV
6457         if (pf->hw.func_caps.num_vfs) {
6458                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
6459                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
6460                 pf->num_req_vfs = min_t(int,
6461                                         pf->hw.func_caps.num_vfs,
6462                                         I40E_MAX_VF_COUNT);
6463         }
6464 #endif /* CONFIG_PCI_IOV */
6465         pf->eeprom_version = 0xDEAD;
6466         pf->lan_veb = I40E_NO_VEB;
6467         pf->lan_vsi = I40E_NO_VSI;
6468
6469         /* set up queue assignment tracking */
6470         size = sizeof(struct i40e_lump_tracking)
6471                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
6472         pf->qp_pile = kzalloc(size, GFP_KERNEL);
6473         if (!pf->qp_pile) {
6474                 err = -ENOMEM;
6475                 goto sw_init_done;
6476         }
6477         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
6478         pf->qp_pile->search_hint = 0;
6479
6480         /* set up vector assignment tracking */
6481         size = sizeof(struct i40e_lump_tracking)
6482                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
6483         pf->irq_pile = kzalloc(size, GFP_KERNEL);
6484         if (!pf->irq_pile) {
6485                 kfree(pf->qp_pile);
6486                 err = -ENOMEM;
6487                 goto sw_init_done;
6488         }
6489         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
6490         pf->irq_pile->search_hint = 0;
6491
6492         mutex_init(&pf->switch_mutex);
6493
6494 sw_init_done:
6495         return err;
6496 }
6497
6498 /**
6499  * i40e_set_ntuple - set the ntuple feature flag and take action
6500  * @pf: board private structure to initialize
6501  * @features: the feature set that the stack is suggesting
6502  *
6503  * returns a bool to indicate if reset needs to happen
6504  **/
6505 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
6506 {
6507         bool need_reset = false;
6508
6509         /* Check if Flow Director n-tuple support was enabled or disabled.  If
6510          * the state changed, we need to reset.
6511          */
6512         if (features & NETIF_F_NTUPLE) {
6513                 /* Enable filters and mark for reset */
6514                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6515                         need_reset = true;
6516                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
6517         } else {
6518                 /* turn off filters, mark for reset and clear SW filter list */
6519                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
6520                         need_reset = true;
6521                         i40e_fdir_filter_exit(pf);
6522                 }
6523                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6524                 /* if ATR was disabled it can be re-enabled. */
6525                 if (!(pf->flags & I40E_FLAG_FD_ATR_ENABLED))
6526                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6527         }
6528         return need_reset;
6529 }
6530
6531 /**
6532  * i40e_set_features - set the netdev feature flags
6533  * @netdev: ptr to the netdev being adjusted
6534  * @features: the feature set that the stack is suggesting
6535  **/
6536 static int i40e_set_features(struct net_device *netdev,
6537                              netdev_features_t features)
6538 {
6539         struct i40e_netdev_priv *np = netdev_priv(netdev);
6540         struct i40e_vsi *vsi = np->vsi;
6541         struct i40e_pf *pf = vsi->back;
6542         bool need_reset;
6543
6544         if (features & NETIF_F_HW_VLAN_CTAG_RX)
6545                 i40e_vlan_stripping_enable(vsi);
6546         else
6547                 i40e_vlan_stripping_disable(vsi);
6548
6549         need_reset = i40e_set_ntuple(pf, features);
6550
6551         if (need_reset)
6552                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
6553
6554         return 0;
6555 }
6556
6557 #ifdef CONFIG_I40E_VXLAN
6558 /**
6559  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
6560  * @pf: board private structure
6561  * @port: The UDP port to look up
6562  *
6563  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
6564  **/
6565 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
6566 {
6567         u8 i;
6568
6569         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6570                 if (pf->vxlan_ports[i] == port)
6571                         return i;
6572         }
6573
6574         return i;
6575 }
6576
6577 /**
6578  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
6579  * @netdev: This physical port's netdev
6580  * @sa_family: Socket Family that VXLAN is notifying us about
6581  * @port: New UDP port number that VXLAN started listening to
6582  **/
6583 static void i40e_add_vxlan_port(struct net_device *netdev,
6584                                 sa_family_t sa_family, __be16 port)
6585 {
6586         struct i40e_netdev_priv *np = netdev_priv(netdev);
6587         struct i40e_vsi *vsi = np->vsi;
6588         struct i40e_pf *pf = vsi->back;
6589         u8 next_idx;
6590         u8 idx;
6591
6592         if (sa_family == AF_INET6)
6593                 return;
6594
6595         idx = i40e_get_vxlan_port_idx(pf, port);
6596
6597         /* Check if port already exists */
6598         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6599                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
6600                 return;
6601         }
6602
6603         /* Now check if there is space to add the new port */
6604         next_idx = i40e_get_vxlan_port_idx(pf, 0);
6605
6606         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6607                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
6608                             ntohs(port));
6609                 return;
6610         }
6611
6612         /* New port: add it and mark its index in the bitmap */
6613         pf->vxlan_ports[next_idx] = port;
6614         pf->pending_vxlan_bitmap |= (1 << next_idx);
6615
6616         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6617 }
6618
6619 /**
6620  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
6621  * @netdev: This physical port's netdev
6622  * @sa_family: Socket Family that VXLAN is notifying us about
6623  * @port: UDP port number that VXLAN stopped listening to
6624  **/
6625 static void i40e_del_vxlan_port(struct net_device *netdev,
6626                                 sa_family_t sa_family, __be16 port)
6627 {
6628         struct i40e_netdev_priv *np = netdev_priv(netdev);
6629         struct i40e_vsi *vsi = np->vsi;
6630         struct i40e_pf *pf = vsi->back;
6631         u8 idx;
6632
6633         if (sa_family == AF_INET6)
6634                 return;
6635
6636         idx = i40e_get_vxlan_port_idx(pf, port);
6637
6638         /* Check if port already exists */
6639         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6640                 /* if port exists, set it to 0 (mark for deletion)
6641                  * and make it pending
6642                  */
6643                 pf->vxlan_ports[idx] = 0;
6644
6645                 pf->pending_vxlan_bitmap |= (1 << idx);
6646
6647                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6648         } else {
6649                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
6650                             ntohs(port));
6651         }
6652 }
6653
6654 #endif
6655 static const struct net_device_ops i40e_netdev_ops = {
6656         .ndo_open               = i40e_open,
6657         .ndo_stop               = i40e_close,
6658         .ndo_start_xmit         = i40e_lan_xmit_frame,
6659         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
6660         .ndo_set_rx_mode        = i40e_set_rx_mode,
6661         .ndo_validate_addr      = eth_validate_addr,
6662         .ndo_set_mac_address    = i40e_set_mac,
6663         .ndo_change_mtu         = i40e_change_mtu,
6664         .ndo_do_ioctl           = i40e_ioctl,
6665         .ndo_tx_timeout         = i40e_tx_timeout,
6666         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
6667         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
6668 #ifdef CONFIG_NET_POLL_CONTROLLER
6669         .ndo_poll_controller    = i40e_netpoll,
6670 #endif
6671         .ndo_setup_tc           = i40e_setup_tc,
6672         .ndo_set_features       = i40e_set_features,
6673         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
6674         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
6675         .ndo_set_vf_tx_rate     = i40e_ndo_set_vf_bw,
6676         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
6677         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
6678 #ifdef CONFIG_I40E_VXLAN
6679         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
6680         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
6681 #endif
6682 };
6683
6684 /**
6685  * i40e_config_netdev - Setup the netdev flags
6686  * @vsi: the VSI being configured
6687  *
6688  * Returns 0 on success, negative value on failure
6689  **/
6690 static int i40e_config_netdev(struct i40e_vsi *vsi)
6691 {
6692         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
6693         struct i40e_pf *pf = vsi->back;
6694         struct i40e_hw *hw = &pf->hw;
6695         struct i40e_netdev_priv *np;
6696         struct net_device *netdev;
6697         u8 mac_addr[ETH_ALEN];
6698         int etherdev_size;
6699
6700         etherdev_size = sizeof(struct i40e_netdev_priv);
6701         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
6702         if (!netdev)
6703                 return -ENOMEM;
6704
6705         vsi->netdev = netdev;
6706         np = netdev_priv(netdev);
6707         np->vsi = vsi;
6708
6709         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
6710                                   NETIF_F_GSO_UDP_TUNNEL |
6711                                   NETIF_F_TSO;
6712
6713         netdev->features = NETIF_F_SG                  |
6714                            NETIF_F_IP_CSUM             |
6715                            NETIF_F_SCTP_CSUM           |
6716                            NETIF_F_HIGHDMA             |
6717                            NETIF_F_GSO_UDP_TUNNEL      |
6718                            NETIF_F_HW_VLAN_CTAG_TX     |
6719                            NETIF_F_HW_VLAN_CTAG_RX     |
6720                            NETIF_F_HW_VLAN_CTAG_FILTER |
6721                            NETIF_F_IPV6_CSUM           |
6722                            NETIF_F_TSO                 |
6723                            NETIF_F_TSO_ECN             |
6724                            NETIF_F_TSO6                |
6725                            NETIF_F_RXCSUM              |
6726                            NETIF_F_NTUPLE              |
6727                            NETIF_F_RXHASH              |
6728                            0;
6729
6730         /* copy netdev features into list of user selectable features */
6731         netdev->hw_features |= netdev->features;
6732
6733         if (vsi->type == I40E_VSI_MAIN) {
6734                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
6735                 memcpy(mac_addr, hw->mac.perm_addr, ETH_ALEN);
6736         } else {
6737                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
6738                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
6739                          pf->vsi[pf->lan_vsi]->netdev->name);
6740                 random_ether_addr(mac_addr);
6741                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
6742         }
6743         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
6744
6745         memcpy(netdev->dev_addr, mac_addr, ETH_ALEN);
6746         memcpy(netdev->perm_addr, mac_addr, ETH_ALEN);
6747         /* vlan gets same features (except vlan offload)
6748          * after any tweaks for specific VSI types
6749          */
6750         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
6751                                                      NETIF_F_HW_VLAN_CTAG_RX |
6752                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
6753         netdev->priv_flags |= IFF_UNICAST_FLT;
6754         netdev->priv_flags |= IFF_SUPP_NOFCS;
6755         /* Setup netdev TC information */
6756         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
6757
6758         netdev->netdev_ops = &i40e_netdev_ops;
6759         netdev->watchdog_timeo = 5 * HZ;
6760         i40e_set_ethtool_ops(netdev);
6761
6762         return 0;
6763 }
6764
6765 /**
6766  * i40e_vsi_delete - Delete a VSI from the switch
6767  * @vsi: the VSI being removed
6768  *
6769  * Returns 0 on success, negative value on failure
6770  **/
6771 static void i40e_vsi_delete(struct i40e_vsi *vsi)
6772 {
6773         /* remove default VSI is not allowed */
6774         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
6775                 return;
6776
6777         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
6778         return;
6779 }
6780
6781 /**
6782  * i40e_add_vsi - Add a VSI to the switch
6783  * @vsi: the VSI being configured
6784  *
6785  * This initializes a VSI context depending on the VSI type to be added and
6786  * passes it down to the add_vsi aq command.
6787  **/
6788 static int i40e_add_vsi(struct i40e_vsi *vsi)
6789 {
6790         int ret = -ENODEV;
6791         struct i40e_mac_filter *f, *ftmp;
6792         struct i40e_pf *pf = vsi->back;
6793         struct i40e_hw *hw = &pf->hw;
6794         struct i40e_vsi_context ctxt;
6795         u8 enabled_tc = 0x1; /* TC0 enabled */
6796         int f_count = 0;
6797
6798         memset(&ctxt, 0, sizeof(ctxt));
6799         switch (vsi->type) {
6800         case I40E_VSI_MAIN:
6801                 /* The PF's main VSI is already setup as part of the
6802                  * device initialization, so we'll not bother with
6803                  * the add_vsi call, but we will retrieve the current
6804                  * VSI context.
6805                  */
6806                 ctxt.seid = pf->main_vsi_seid;
6807                 ctxt.pf_num = pf->hw.pf_id;
6808                 ctxt.vf_num = 0;
6809                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6810                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6811                 if (ret) {
6812                         dev_info(&pf->pdev->dev,
6813                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
6814                                  ret, pf->hw.aq.asq_last_status);
6815                         return -ENOENT;
6816                 }
6817                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
6818                 vsi->info.valid_sections = 0;
6819
6820                 vsi->seid = ctxt.seid;
6821                 vsi->id = ctxt.vsi_number;
6822
6823                 enabled_tc = i40e_pf_get_tc_map(pf);
6824
6825                 /* MFP mode setup queue map and update VSI */
6826                 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
6827                         memset(&ctxt, 0, sizeof(ctxt));
6828                         ctxt.seid = pf->main_vsi_seid;
6829                         ctxt.pf_num = pf->hw.pf_id;
6830                         ctxt.vf_num = 0;
6831                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
6832                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
6833                         if (ret) {
6834                                 dev_info(&pf->pdev->dev,
6835                                          "update vsi failed, aq_err=%d\n",
6836                                          pf->hw.aq.asq_last_status);
6837                                 ret = -ENOENT;
6838                                 goto err;
6839                         }
6840                         /* update the local VSI info queue map */
6841                         i40e_vsi_update_queue_map(vsi, &ctxt);
6842                         vsi->info.valid_sections = 0;
6843                 } else {
6844                         /* Default/Main VSI is only enabled for TC0
6845                          * reconfigure it to enable all TCs that are
6846                          * available on the port in SFP mode.
6847                          */
6848                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
6849                         if (ret) {
6850                                 dev_info(&pf->pdev->dev,
6851                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
6852                                          enabled_tc, ret,
6853                                          pf->hw.aq.asq_last_status);
6854                                 ret = -ENOENT;
6855                         }
6856                 }
6857                 break;
6858
6859         case I40E_VSI_FDIR:
6860                 ctxt.pf_num = hw->pf_id;
6861                 ctxt.vf_num = 0;
6862                 ctxt.uplink_seid = vsi->uplink_seid;
6863                 ctxt.connection_type = 0x1;     /* regular data port */
6864                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6865                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6866                 break;
6867
6868         case I40E_VSI_VMDQ2:
6869                 ctxt.pf_num = hw->pf_id;
6870                 ctxt.vf_num = 0;
6871                 ctxt.uplink_seid = vsi->uplink_seid;
6872                 ctxt.connection_type = 0x1;     /* regular data port */
6873                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
6874
6875                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6876
6877                 /* This VSI is connected to VEB so the switch_id
6878                  * should be set to zero by default.
6879                  */
6880                 ctxt.info.switch_id = 0;
6881                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
6882                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6883
6884                 /* Setup the VSI tx/rx queue map for TC0 only for now */
6885                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6886                 break;
6887
6888         case I40E_VSI_SRIOV:
6889                 ctxt.pf_num = hw->pf_id;
6890                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
6891                 ctxt.uplink_seid = vsi->uplink_seid;
6892                 ctxt.connection_type = 0x1;     /* regular data port */
6893                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
6894
6895                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6896
6897                 /* This VSI is connected to VEB so the switch_id
6898                  * should be set to zero by default.
6899                  */
6900                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6901
6902                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
6903                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
6904                 /* Setup the VSI tx/rx queue map for TC0 only for now */
6905                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6906                 break;
6907
6908         default:
6909                 return -ENODEV;
6910         }
6911
6912         if (vsi->type != I40E_VSI_MAIN) {
6913                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
6914                 if (ret) {
6915                         dev_info(&vsi->back->pdev->dev,
6916                                  "add vsi failed, aq_err=%d\n",
6917                                  vsi->back->hw.aq.asq_last_status);
6918                         ret = -ENOENT;
6919                         goto err;
6920                 }
6921                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
6922                 vsi->info.valid_sections = 0;
6923                 vsi->seid = ctxt.seid;
6924                 vsi->id = ctxt.vsi_number;
6925         }
6926
6927         /* If macvlan filters already exist, force them to get loaded */
6928         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
6929                 f->changed = true;
6930                 f_count++;
6931         }
6932         if (f_count) {
6933                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
6934                 pf->flags |= I40E_FLAG_FILTER_SYNC;
6935         }
6936
6937         /* Update VSI BW information */
6938         ret = i40e_vsi_get_bw_info(vsi);
6939         if (ret) {
6940                 dev_info(&pf->pdev->dev,
6941                          "couldn't get vsi bw info, err %d, aq_err %d\n",
6942                          ret, pf->hw.aq.asq_last_status);
6943                 /* VSI is already added so not tearing that up */
6944                 ret = 0;
6945         }
6946
6947 err:
6948         return ret;
6949 }
6950
6951 /**
6952  * i40e_vsi_release - Delete a VSI and free its resources
6953  * @vsi: the VSI being removed
6954  *
6955  * Returns 0 on success or < 0 on error
6956  **/
6957 int i40e_vsi_release(struct i40e_vsi *vsi)
6958 {
6959         struct i40e_mac_filter *f, *ftmp;
6960         struct i40e_veb *veb = NULL;
6961         struct i40e_pf *pf;
6962         u16 uplink_seid;
6963         int i, n;
6964
6965         pf = vsi->back;
6966
6967         /* release of a VEB-owner or last VSI is not allowed */
6968         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
6969                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
6970                          vsi->seid, vsi->uplink_seid);
6971                 return -ENODEV;
6972         }
6973         if (vsi == pf->vsi[pf->lan_vsi] &&
6974             !test_bit(__I40E_DOWN, &pf->state)) {
6975                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
6976                 return -ENODEV;
6977         }
6978
6979         uplink_seid = vsi->uplink_seid;
6980         if (vsi->type != I40E_VSI_SRIOV) {
6981                 if (vsi->netdev_registered) {
6982                         vsi->netdev_registered = false;
6983                         if (vsi->netdev) {
6984                                 /* results in a call to i40e_close() */
6985                                 unregister_netdev(vsi->netdev);
6986                         }
6987                 } else {
6988                         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
6989                                 i40e_down(vsi);
6990                         i40e_vsi_free_irq(vsi);
6991                         i40e_vsi_free_tx_resources(vsi);
6992                         i40e_vsi_free_rx_resources(vsi);
6993                 }
6994                 i40e_vsi_disable_irq(vsi);
6995         }
6996
6997         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
6998                 i40e_del_filter(vsi, f->macaddr, f->vlan,
6999                                 f->is_vf, f->is_netdev);
7000         i40e_sync_vsi_filters(vsi);
7001
7002         i40e_vsi_delete(vsi);
7003         i40e_vsi_free_q_vectors(vsi);
7004         if (vsi->netdev) {
7005                 free_netdev(vsi->netdev);
7006                 vsi->netdev = NULL;
7007         }
7008         i40e_vsi_clear_rings(vsi);
7009         i40e_vsi_clear(vsi);
7010
7011         /* If this was the last thing on the VEB, except for the
7012          * controlling VSI, remove the VEB, which puts the controlling
7013          * VSI onto the next level down in the switch.
7014          *
7015          * Well, okay, there's one more exception here: don't remove
7016          * the orphan VEBs yet.  We'll wait for an explicit remove request
7017          * from up the network stack.
7018          */
7019         for (n = 0, i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7020                 if (pf->vsi[i] &&
7021                     pf->vsi[i]->uplink_seid == uplink_seid &&
7022                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7023                         n++;      /* count the VSIs */
7024                 }
7025         }
7026         for (i = 0; i < I40E_MAX_VEB; i++) {
7027                 if (!pf->veb[i])
7028                         continue;
7029                 if (pf->veb[i]->uplink_seid == uplink_seid)
7030                         n++;     /* count the VEBs */
7031                 if (pf->veb[i]->seid == uplink_seid)
7032                         veb = pf->veb[i];
7033         }
7034         if (n == 0 && veb && veb->uplink_seid != 0)
7035                 i40e_veb_release(veb);
7036
7037         return 0;
7038 }
7039
7040 /**
7041  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
7042  * @vsi: ptr to the VSI
7043  *
7044  * This should only be called after i40e_vsi_mem_alloc() which allocates the
7045  * corresponding SW VSI structure and initializes num_queue_pairs for the
7046  * newly allocated VSI.
7047  *
7048  * Returns 0 on success or negative on failure
7049  **/
7050 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
7051 {
7052         int ret = -ENOENT;
7053         struct i40e_pf *pf = vsi->back;
7054
7055         if (vsi->q_vectors[0]) {
7056                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
7057                          vsi->seid);
7058                 return -EEXIST;
7059         }
7060
7061         if (vsi->base_vector) {
7062                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
7063                          vsi->seid, vsi->base_vector);
7064                 return -EEXIST;
7065         }
7066
7067         ret = i40e_vsi_alloc_q_vectors(vsi);
7068         if (ret) {
7069                 dev_info(&pf->pdev->dev,
7070                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
7071                          vsi->num_q_vectors, vsi->seid, ret);
7072                 vsi->num_q_vectors = 0;
7073                 goto vector_setup_out;
7074         }
7075
7076         if (vsi->num_q_vectors)
7077                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
7078                                                  vsi->num_q_vectors, vsi->idx);
7079         if (vsi->base_vector < 0) {
7080                 dev_info(&pf->pdev->dev,
7081                          "failed to get queue tracking for VSI %d, err=%d\n",
7082                          vsi->seid, vsi->base_vector);
7083                 i40e_vsi_free_q_vectors(vsi);
7084                 ret = -ENOENT;
7085                 goto vector_setup_out;
7086         }
7087
7088 vector_setup_out:
7089         return ret;
7090 }
7091
7092 /**
7093  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
7094  * @vsi: pointer to the vsi.
7095  *
7096  * This re-allocates a vsi's queue resources.
7097  *
7098  * Returns pointer to the successfully allocated and configured VSI sw struct
7099  * on success, otherwise returns NULL on failure.
7100  **/
7101 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
7102 {
7103         struct i40e_pf *pf = vsi->back;
7104         u8 enabled_tc;
7105         int ret;
7106
7107         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7108         i40e_vsi_clear_rings(vsi);
7109
7110         i40e_vsi_free_arrays(vsi, false);
7111         i40e_set_num_rings_in_vsi(vsi);
7112         ret = i40e_vsi_alloc_arrays(vsi, false);
7113         if (ret)
7114                 goto err_vsi;
7115
7116         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
7117         if (ret < 0) {
7118                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7119                          vsi->seid, ret);
7120                 goto err_vsi;
7121         }
7122         vsi->base_queue = ret;
7123
7124         /* Update the FW view of the VSI. Force a reset of TC and queue
7125          * layout configurations.
7126          */
7127         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
7128         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
7129         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
7130         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
7131
7132         /* assign it some queues */
7133         ret = i40e_alloc_rings(vsi);
7134         if (ret)
7135                 goto err_rings;
7136
7137         /* map all of the rings to the q_vectors */
7138         i40e_vsi_map_rings_to_vectors(vsi);
7139         return vsi;
7140
7141 err_rings:
7142         i40e_vsi_free_q_vectors(vsi);
7143         if (vsi->netdev_registered) {
7144                 vsi->netdev_registered = false;
7145                 unregister_netdev(vsi->netdev);
7146                 free_netdev(vsi->netdev);
7147                 vsi->netdev = NULL;
7148         }
7149         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
7150 err_vsi:
7151         i40e_vsi_clear(vsi);
7152         return NULL;
7153 }
7154
7155 /**
7156  * i40e_vsi_setup - Set up a VSI by a given type
7157  * @pf: board private structure
7158  * @type: VSI type
7159  * @uplink_seid: the switch element to link to
7160  * @param1: usage depends upon VSI type. For VF types, indicates VF id
7161  *
7162  * This allocates the sw VSI structure and its queue resources, then add a VSI
7163  * to the identified VEB.
7164  *
7165  * Returns pointer to the successfully allocated and configure VSI sw struct on
7166  * success, otherwise returns NULL on failure.
7167  **/
7168 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
7169                                 u16 uplink_seid, u32 param1)
7170 {
7171         struct i40e_vsi *vsi = NULL;
7172         struct i40e_veb *veb = NULL;
7173         int ret, i;
7174         int v_idx;
7175
7176         /* The requested uplink_seid must be either
7177          *     - the PF's port seid
7178          *              no VEB is needed because this is the PF
7179          *              or this is a Flow Director special case VSI
7180          *     - seid of an existing VEB
7181          *     - seid of a VSI that owns an existing VEB
7182          *     - seid of a VSI that doesn't own a VEB
7183          *              a new VEB is created and the VSI becomes the owner
7184          *     - seid of the PF VSI, which is what creates the first VEB
7185          *              this is a special case of the previous
7186          *
7187          * Find which uplink_seid we were given and create a new VEB if needed
7188          */
7189         for (i = 0; i < I40E_MAX_VEB; i++) {
7190                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
7191                         veb = pf->veb[i];
7192                         break;
7193                 }
7194         }
7195
7196         if (!veb && uplink_seid != pf->mac_seid) {
7197
7198                 for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7199                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
7200                                 vsi = pf->vsi[i];
7201                                 break;
7202                         }
7203                 }
7204                 if (!vsi) {
7205                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
7206                                  uplink_seid);
7207                         return NULL;
7208                 }
7209
7210                 if (vsi->uplink_seid == pf->mac_seid)
7211                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
7212                                              vsi->tc_config.enabled_tc);
7213                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
7214                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
7215                                              vsi->tc_config.enabled_tc);
7216
7217                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7218                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7219                                 veb = pf->veb[i];
7220                 }
7221                 if (!veb) {
7222                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
7223                         return NULL;
7224                 }
7225
7226                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
7227                 uplink_seid = veb->seid;
7228         }
7229
7230         /* get vsi sw struct */
7231         v_idx = i40e_vsi_mem_alloc(pf, type);
7232         if (v_idx < 0)
7233                 goto err_alloc;
7234         vsi = pf->vsi[v_idx];
7235         if (!vsi)
7236                 goto err_alloc;
7237         vsi->type = type;
7238         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
7239
7240         if (type == I40E_VSI_MAIN)
7241                 pf->lan_vsi = v_idx;
7242         else if (type == I40E_VSI_SRIOV)
7243                 vsi->vf_id = param1;
7244         /* assign it some queues */
7245         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
7246                                 vsi->idx);
7247         if (ret < 0) {
7248                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7249                          vsi->seid, ret);
7250                 goto err_vsi;
7251         }
7252         vsi->base_queue = ret;
7253
7254         /* get a VSI from the hardware */
7255         vsi->uplink_seid = uplink_seid;
7256         ret = i40e_add_vsi(vsi);
7257         if (ret)
7258                 goto err_vsi;
7259
7260         switch (vsi->type) {
7261         /* setup the netdev if needed */
7262         case I40E_VSI_MAIN:
7263         case I40E_VSI_VMDQ2:
7264                 ret = i40e_config_netdev(vsi);
7265                 if (ret)
7266                         goto err_netdev;
7267                 ret = register_netdev(vsi->netdev);
7268                 if (ret)
7269                         goto err_netdev;
7270                 vsi->netdev_registered = true;
7271                 netif_carrier_off(vsi->netdev);
7272 #ifdef CONFIG_I40E_DCB
7273                 /* Setup DCB netlink interface */
7274                 i40e_dcbnl_setup(vsi);
7275 #endif /* CONFIG_I40E_DCB */
7276                 /* fall through */
7277
7278         case I40E_VSI_FDIR:
7279                 /* set up vectors and rings if needed */
7280                 ret = i40e_vsi_setup_vectors(vsi);
7281                 if (ret)
7282                         goto err_msix;
7283
7284                 ret = i40e_alloc_rings(vsi);
7285                 if (ret)
7286                         goto err_rings;
7287
7288                 /* map all of the rings to the q_vectors */
7289                 i40e_vsi_map_rings_to_vectors(vsi);
7290
7291                 i40e_vsi_reset_stats(vsi);
7292                 break;
7293
7294         default:
7295                 /* no netdev or rings for the other VSI types */
7296                 break;
7297         }
7298
7299         return vsi;
7300
7301 err_rings:
7302         i40e_vsi_free_q_vectors(vsi);
7303 err_msix:
7304         if (vsi->netdev_registered) {
7305                 vsi->netdev_registered = false;
7306                 unregister_netdev(vsi->netdev);
7307                 free_netdev(vsi->netdev);
7308                 vsi->netdev = NULL;
7309         }
7310 err_netdev:
7311         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
7312 err_vsi:
7313         i40e_vsi_clear(vsi);
7314 err_alloc:
7315         return NULL;
7316 }
7317
7318 /**
7319  * i40e_veb_get_bw_info - Query VEB BW information
7320  * @veb: the veb to query
7321  *
7322  * Query the Tx scheduler BW configuration data for given VEB
7323  **/
7324 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
7325 {
7326         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
7327         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
7328         struct i40e_pf *pf = veb->pf;
7329         struct i40e_hw *hw = &pf->hw;
7330         u32 tc_bw_max;
7331         int ret = 0;
7332         int i;
7333
7334         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
7335                                                   &bw_data, NULL);
7336         if (ret) {
7337                 dev_info(&pf->pdev->dev,
7338                          "query veb bw config failed, aq_err=%d\n",
7339                          hw->aq.asq_last_status);
7340                 goto out;
7341         }
7342
7343         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
7344                                                    &ets_data, NULL);
7345         if (ret) {
7346                 dev_info(&pf->pdev->dev,
7347                          "query veb bw ets config failed, aq_err=%d\n",
7348                          hw->aq.asq_last_status);
7349                 goto out;
7350         }
7351
7352         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
7353         veb->bw_max_quanta = ets_data.tc_bw_max;
7354         veb->is_abs_credits = bw_data.absolute_credits_enable;
7355         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
7356                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
7357         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
7358                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
7359                 veb->bw_tc_limit_credits[i] =
7360                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
7361                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
7362         }
7363
7364 out:
7365         return ret;
7366 }
7367
7368 /**
7369  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
7370  * @pf: board private structure
7371  *
7372  * On error: returns error code (negative)
7373  * On success: returns vsi index in PF (positive)
7374  **/
7375 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
7376 {
7377         int ret = -ENOENT;
7378         struct i40e_veb *veb;
7379         int i;
7380
7381         /* Need to protect the allocation of switch elements at the PF level */
7382         mutex_lock(&pf->switch_mutex);
7383
7384         /* VEB list may be fragmented if VEB creation/destruction has
7385          * been happening.  We can afford to do a quick scan to look
7386          * for any free slots in the list.
7387          *
7388          * find next empty veb slot, looping back around if necessary
7389          */
7390         i = 0;
7391         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
7392                 i++;
7393         if (i >= I40E_MAX_VEB) {
7394                 ret = -ENOMEM;
7395                 goto err_alloc_veb;  /* out of VEB slots! */
7396         }
7397
7398         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
7399         if (!veb) {
7400                 ret = -ENOMEM;
7401                 goto err_alloc_veb;
7402         }
7403         veb->pf = pf;
7404         veb->idx = i;
7405         veb->enabled_tc = 1;
7406
7407         pf->veb[i] = veb;
7408         ret = i;
7409 err_alloc_veb:
7410         mutex_unlock(&pf->switch_mutex);
7411         return ret;
7412 }
7413
7414 /**
7415  * i40e_switch_branch_release - Delete a branch of the switch tree
7416  * @branch: where to start deleting
7417  *
7418  * This uses recursion to find the tips of the branch to be
7419  * removed, deleting until we get back to and can delete this VEB.
7420  **/
7421 static void i40e_switch_branch_release(struct i40e_veb *branch)
7422 {
7423         struct i40e_pf *pf = branch->pf;
7424         u16 branch_seid = branch->seid;
7425         u16 veb_idx = branch->idx;
7426         int i;
7427
7428         /* release any VEBs on this VEB - RECURSION */
7429         for (i = 0; i < I40E_MAX_VEB; i++) {
7430                 if (!pf->veb[i])
7431                         continue;
7432                 if (pf->veb[i]->uplink_seid == branch->seid)
7433                         i40e_switch_branch_release(pf->veb[i]);
7434         }
7435
7436         /* Release the VSIs on this VEB, but not the owner VSI.
7437          *
7438          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
7439          *       the VEB itself, so don't use (*branch) after this loop.
7440          */
7441         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7442                 if (!pf->vsi[i])
7443                         continue;
7444                 if (pf->vsi[i]->uplink_seid == branch_seid &&
7445                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7446                         i40e_vsi_release(pf->vsi[i]);
7447                 }
7448         }
7449
7450         /* There's one corner case where the VEB might not have been
7451          * removed, so double check it here and remove it if needed.
7452          * This case happens if the veb was created from the debugfs
7453          * commands and no VSIs were added to it.
7454          */
7455         if (pf->veb[veb_idx])
7456                 i40e_veb_release(pf->veb[veb_idx]);
7457 }
7458
7459 /**
7460  * i40e_veb_clear - remove veb struct
7461  * @veb: the veb to remove
7462  **/
7463 static void i40e_veb_clear(struct i40e_veb *veb)
7464 {
7465         if (!veb)
7466                 return;
7467
7468         if (veb->pf) {
7469                 struct i40e_pf *pf = veb->pf;
7470
7471                 mutex_lock(&pf->switch_mutex);
7472                 if (pf->veb[veb->idx] == veb)
7473                         pf->veb[veb->idx] = NULL;
7474                 mutex_unlock(&pf->switch_mutex);
7475         }
7476
7477         kfree(veb);
7478 }
7479
7480 /**
7481  * i40e_veb_release - Delete a VEB and free its resources
7482  * @veb: the VEB being removed
7483  **/
7484 void i40e_veb_release(struct i40e_veb *veb)
7485 {
7486         struct i40e_vsi *vsi = NULL;
7487         struct i40e_pf *pf;
7488         int i, n = 0;
7489
7490         pf = veb->pf;
7491
7492         /* find the remaining VSI and check for extras */
7493         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7494                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
7495                         n++;
7496                         vsi = pf->vsi[i];
7497                 }
7498         }
7499         if (n != 1) {
7500                 dev_info(&pf->pdev->dev,
7501                          "can't remove VEB %d with %d VSIs left\n",
7502                          veb->seid, n);
7503                 return;
7504         }
7505
7506         /* move the remaining VSI to uplink veb */
7507         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
7508         if (veb->uplink_seid) {
7509                 vsi->uplink_seid = veb->uplink_seid;
7510                 if (veb->uplink_seid == pf->mac_seid)
7511                         vsi->veb_idx = I40E_NO_VEB;
7512                 else
7513                         vsi->veb_idx = veb->veb_idx;
7514         } else {
7515                 /* floating VEB */
7516                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
7517                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
7518         }
7519
7520         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
7521         i40e_veb_clear(veb);
7522
7523         return;
7524 }
7525
7526 /**
7527  * i40e_add_veb - create the VEB in the switch
7528  * @veb: the VEB to be instantiated
7529  * @vsi: the controlling VSI
7530  **/
7531 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
7532 {
7533         bool is_default = false;
7534         bool is_cloud = false;
7535         int ret;
7536
7537         /* get a VEB from the hardware */
7538         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
7539                               veb->enabled_tc, is_default,
7540                               is_cloud, &veb->seid, NULL);
7541         if (ret) {
7542                 dev_info(&veb->pf->pdev->dev,
7543                          "couldn't add VEB, err %d, aq_err %d\n",
7544                          ret, veb->pf->hw.aq.asq_last_status);
7545                 return -EPERM;
7546         }
7547
7548         /* get statistics counter */
7549         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
7550                                          &veb->stats_idx, NULL, NULL, NULL);
7551         if (ret) {
7552                 dev_info(&veb->pf->pdev->dev,
7553                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
7554                          ret, veb->pf->hw.aq.asq_last_status);
7555                 return -EPERM;
7556         }
7557         ret = i40e_veb_get_bw_info(veb);
7558         if (ret) {
7559                 dev_info(&veb->pf->pdev->dev,
7560                          "couldn't get VEB bw info, err %d, aq_err %d\n",
7561                          ret, veb->pf->hw.aq.asq_last_status);
7562                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
7563                 return -ENOENT;
7564         }
7565
7566         vsi->uplink_seid = veb->seid;
7567         vsi->veb_idx = veb->idx;
7568         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
7569
7570         return 0;
7571 }
7572
7573 /**
7574  * i40e_veb_setup - Set up a VEB
7575  * @pf: board private structure
7576  * @flags: VEB setup flags
7577  * @uplink_seid: the switch element to link to
7578  * @vsi_seid: the initial VSI seid
7579  * @enabled_tc: Enabled TC bit-map
7580  *
7581  * This allocates the sw VEB structure and links it into the switch
7582  * It is possible and legal for this to be a duplicate of an already
7583  * existing VEB.  It is also possible for both uplink and vsi seids
7584  * to be zero, in order to create a floating VEB.
7585  *
7586  * Returns pointer to the successfully allocated VEB sw struct on
7587  * success, otherwise returns NULL on failure.
7588  **/
7589 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
7590                                 u16 uplink_seid, u16 vsi_seid,
7591                                 u8 enabled_tc)
7592 {
7593         struct i40e_veb *veb, *uplink_veb = NULL;
7594         int vsi_idx, veb_idx;
7595         int ret;
7596
7597         /* if one seid is 0, the other must be 0 to create a floating relay */
7598         if ((uplink_seid == 0 || vsi_seid == 0) &&
7599             (uplink_seid + vsi_seid != 0)) {
7600                 dev_info(&pf->pdev->dev,
7601                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
7602                          uplink_seid, vsi_seid);
7603                 return NULL;
7604         }
7605
7606         /* make sure there is such a vsi and uplink */
7607         for (vsi_idx = 0; vsi_idx < pf->hw.func_caps.num_vsis; vsi_idx++)
7608                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
7609                         break;
7610         if (vsi_idx >= pf->hw.func_caps.num_vsis && vsi_seid != 0) {
7611                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
7612                          vsi_seid);
7613                 return NULL;
7614         }
7615
7616         if (uplink_seid && uplink_seid != pf->mac_seid) {
7617                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
7618                         if (pf->veb[veb_idx] &&
7619                             pf->veb[veb_idx]->seid == uplink_seid) {
7620                                 uplink_veb = pf->veb[veb_idx];
7621                                 break;
7622                         }
7623                 }
7624                 if (!uplink_veb) {
7625                         dev_info(&pf->pdev->dev,
7626                                  "uplink seid %d not found\n", uplink_seid);
7627                         return NULL;
7628                 }
7629         }
7630
7631         /* get veb sw struct */
7632         veb_idx = i40e_veb_mem_alloc(pf);
7633         if (veb_idx < 0)
7634                 goto err_alloc;
7635         veb = pf->veb[veb_idx];
7636         veb->flags = flags;
7637         veb->uplink_seid = uplink_seid;
7638         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
7639         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
7640
7641         /* create the VEB in the switch */
7642         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
7643         if (ret)
7644                 goto err_veb;
7645
7646         return veb;
7647
7648 err_veb:
7649         i40e_veb_clear(veb);
7650 err_alloc:
7651         return NULL;
7652 }
7653
7654 /**
7655  * i40e_setup_pf_switch_element - set pf vars based on switch type
7656  * @pf: board private structure
7657  * @ele: element we are building info from
7658  * @num_reported: total number of elements
7659  * @printconfig: should we print the contents
7660  *
7661  * helper function to assist in extracting a few useful SEID values.
7662  **/
7663 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
7664                                 struct i40e_aqc_switch_config_element_resp *ele,
7665                                 u16 num_reported, bool printconfig)
7666 {
7667         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
7668         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
7669         u8 element_type = ele->element_type;
7670         u16 seid = le16_to_cpu(ele->seid);
7671
7672         if (printconfig)
7673                 dev_info(&pf->pdev->dev,
7674                          "type=%d seid=%d uplink=%d downlink=%d\n",
7675                          element_type, seid, uplink_seid, downlink_seid);
7676
7677         switch (element_type) {
7678         case I40E_SWITCH_ELEMENT_TYPE_MAC:
7679                 pf->mac_seid = seid;
7680                 break;
7681         case I40E_SWITCH_ELEMENT_TYPE_VEB:
7682                 /* Main VEB? */
7683                 if (uplink_seid != pf->mac_seid)
7684                         break;
7685                 if (pf->lan_veb == I40E_NO_VEB) {
7686                         int v;
7687
7688                         /* find existing or else empty VEB */
7689                         for (v = 0; v < I40E_MAX_VEB; v++) {
7690                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
7691                                         pf->lan_veb = v;
7692                                         break;
7693                                 }
7694                         }
7695                         if (pf->lan_veb == I40E_NO_VEB) {
7696                                 v = i40e_veb_mem_alloc(pf);
7697                                 if (v < 0)
7698                                         break;
7699                                 pf->lan_veb = v;
7700                         }
7701                 }
7702
7703                 pf->veb[pf->lan_veb]->seid = seid;
7704                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
7705                 pf->veb[pf->lan_veb]->pf = pf;
7706                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
7707                 break;
7708         case I40E_SWITCH_ELEMENT_TYPE_VSI:
7709                 if (num_reported != 1)
7710                         break;
7711                 /* This is immediately after a reset so we can assume this is
7712                  * the PF's VSI
7713                  */
7714                 pf->mac_seid = uplink_seid;
7715                 pf->pf_seid = downlink_seid;
7716                 pf->main_vsi_seid = seid;
7717                 if (printconfig)
7718                         dev_info(&pf->pdev->dev,
7719                                  "pf_seid=%d main_vsi_seid=%d\n",
7720                                  pf->pf_seid, pf->main_vsi_seid);
7721                 break;
7722         case I40E_SWITCH_ELEMENT_TYPE_PF:
7723         case I40E_SWITCH_ELEMENT_TYPE_VF:
7724         case I40E_SWITCH_ELEMENT_TYPE_EMP:
7725         case I40E_SWITCH_ELEMENT_TYPE_BMC:
7726         case I40E_SWITCH_ELEMENT_TYPE_PE:
7727         case I40E_SWITCH_ELEMENT_TYPE_PA:
7728                 /* ignore these for now */
7729                 break;
7730         default:
7731                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
7732                          element_type, seid);
7733                 break;
7734         }
7735 }
7736
7737 /**
7738  * i40e_fetch_switch_configuration - Get switch config from firmware
7739  * @pf: board private structure
7740  * @printconfig: should we print the contents
7741  *
7742  * Get the current switch configuration from the device and
7743  * extract a few useful SEID values.
7744  **/
7745 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
7746 {
7747         struct i40e_aqc_get_switch_config_resp *sw_config;
7748         u16 next_seid = 0;
7749         int ret = 0;
7750         u8 *aq_buf;
7751         int i;
7752
7753         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
7754         if (!aq_buf)
7755                 return -ENOMEM;
7756
7757         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
7758         do {
7759                 u16 num_reported, num_total;
7760
7761                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
7762                                                 I40E_AQ_LARGE_BUF,
7763                                                 &next_seid, NULL);
7764                 if (ret) {
7765                         dev_info(&pf->pdev->dev,
7766                                  "get switch config failed %d aq_err=%x\n",
7767                                  ret, pf->hw.aq.asq_last_status);
7768                         kfree(aq_buf);
7769                         return -ENOENT;
7770                 }
7771
7772                 num_reported = le16_to_cpu(sw_config->header.num_reported);
7773                 num_total = le16_to_cpu(sw_config->header.num_total);
7774
7775                 if (printconfig)
7776                         dev_info(&pf->pdev->dev,
7777                                  "header: %d reported %d total\n",
7778                                  num_reported, num_total);
7779
7780                 if (num_reported) {
7781                         int sz = sizeof(*sw_config) * num_reported;
7782
7783                         kfree(pf->sw_config);
7784                         pf->sw_config = kzalloc(sz, GFP_KERNEL);
7785                         if (pf->sw_config)
7786                                 memcpy(pf->sw_config, sw_config, sz);
7787                 }
7788
7789                 for (i = 0; i < num_reported; i++) {
7790                         struct i40e_aqc_switch_config_element_resp *ele =
7791                                 &sw_config->element[i];
7792
7793                         i40e_setup_pf_switch_element(pf, ele, num_reported,
7794                                                      printconfig);
7795                 }
7796         } while (next_seid != 0);
7797
7798         kfree(aq_buf);
7799         return ret;
7800 }
7801
7802 /**
7803  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
7804  * @pf: board private structure
7805  * @reinit: if the Main VSI needs to re-initialized.
7806  *
7807  * Returns 0 on success, negative value on failure
7808  **/
7809 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
7810 {
7811         u32 rxfc = 0, txfc = 0, rxfc_reg;
7812         int ret;
7813
7814         /* find out what's out there already */
7815         ret = i40e_fetch_switch_configuration(pf, false);
7816         if (ret) {
7817                 dev_info(&pf->pdev->dev,
7818                          "couldn't fetch switch config, err %d, aq_err %d\n",
7819                          ret, pf->hw.aq.asq_last_status);
7820                 return ret;
7821         }
7822         i40e_pf_reset_stats(pf);
7823
7824         /* first time setup */
7825         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
7826                 struct i40e_vsi *vsi = NULL;
7827                 u16 uplink_seid;
7828
7829                 /* Set up the PF VSI associated with the PF's main VSI
7830                  * that is already in the HW switch
7831                  */
7832                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
7833                         uplink_seid = pf->veb[pf->lan_veb]->seid;
7834                 else
7835                         uplink_seid = pf->mac_seid;
7836                 if (pf->lan_vsi == I40E_NO_VSI)
7837                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
7838                 else if (reinit)
7839                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
7840                 if (!vsi) {
7841                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
7842                         i40e_fdir_teardown(pf);
7843                         return -EAGAIN;
7844                 }
7845         } else {
7846                 /* force a reset of TC and queue layout configurations */
7847                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
7848                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
7849                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
7850                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
7851         }
7852         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
7853
7854         i40e_fdir_sb_setup(pf);
7855
7856         /* Setup static PF queue filter control settings */
7857         ret = i40e_setup_pf_filter_control(pf);
7858         if (ret) {
7859                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
7860                          ret);
7861                 /* Failure here should not stop continuing other steps */
7862         }
7863
7864         /* enable RSS in the HW, even for only one queue, as the stack can use
7865          * the hash
7866          */
7867         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
7868                 i40e_config_rss(pf);
7869
7870         /* fill in link information and enable LSE reporting */
7871         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
7872         i40e_link_event(pf);
7873
7874         /* Initialize user-specific link properties */
7875         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
7876                                   I40E_AQ_AN_COMPLETED) ? true : false);
7877         /* requested_mode is set in probe or by ethtool */
7878         if (!pf->fc_autoneg_status)
7879                 goto no_autoneg;
7880
7881         if ((pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX) &&
7882             (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX))
7883                 pf->hw.fc.current_mode = I40E_FC_FULL;
7884         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX)
7885                 pf->hw.fc.current_mode = I40E_FC_TX_PAUSE;
7886         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX)
7887                 pf->hw.fc.current_mode = I40E_FC_RX_PAUSE;
7888         else
7889                 pf->hw.fc.current_mode = I40E_FC_NONE;
7890
7891         /* sync the flow control settings with the auto-neg values */
7892         switch (pf->hw.fc.current_mode) {
7893         case I40E_FC_FULL:
7894                 txfc = 1;
7895                 rxfc = 1;
7896                 break;
7897         case I40E_FC_TX_PAUSE:
7898                 txfc = 1;
7899                 rxfc = 0;
7900                 break;
7901         case I40E_FC_RX_PAUSE:
7902                 txfc = 0;
7903                 rxfc = 1;
7904                 break;
7905         case I40E_FC_NONE:
7906         case I40E_FC_DEFAULT:
7907                 txfc = 0;
7908                 rxfc = 0;
7909                 break;
7910         case I40E_FC_PFC:
7911                 /* TBD */
7912                 break;
7913         /* no default case, we have to handle all possibilities here */
7914         }
7915
7916         wr32(&pf->hw, I40E_PRTDCB_FCCFG, txfc << I40E_PRTDCB_FCCFG_TFCE_SHIFT);
7917
7918         rxfc_reg = rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
7919                    ~I40E_PRTDCB_MFLCN_RFCE_MASK;
7920         rxfc_reg |= (rxfc << I40E_PRTDCB_MFLCN_RFCE_SHIFT);
7921
7922         wr32(&pf->hw, I40E_PRTDCB_MFLCN, rxfc_reg);
7923
7924         goto fc_complete;
7925
7926 no_autoneg:
7927         /* disable L2 flow control, user can turn it on if they wish */
7928         wr32(&pf->hw, I40E_PRTDCB_FCCFG, 0);
7929         wr32(&pf->hw, I40E_PRTDCB_MFLCN, rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
7930                                          ~I40E_PRTDCB_MFLCN_RFCE_MASK);
7931
7932 fc_complete:
7933         i40e_ptp_init(pf);
7934
7935         return ret;
7936 }
7937
7938 /**
7939  * i40e_determine_queue_usage - Work out queue distribution
7940  * @pf: board private structure
7941  **/
7942 static void i40e_determine_queue_usage(struct i40e_pf *pf)
7943 {
7944         int queues_left;
7945
7946         pf->num_lan_qps = 0;
7947
7948         /* Find the max queues to be put into basic use.  We'll always be
7949          * using TC0, whether or not DCB is running, and TC0 will get the
7950          * big RSS set.
7951          */
7952         queues_left = pf->hw.func_caps.num_tx_qp;
7953
7954         if ((queues_left == 1) ||
7955             !(pf->flags & I40E_FLAG_MSIX_ENABLED) ||
7956             !(pf->flags & (I40E_FLAG_RSS_ENABLED | I40E_FLAG_FD_SB_ENABLED |
7957                            I40E_FLAG_DCB_ENABLED))) {
7958                 /* one qp for PF, no queues for anything else */
7959                 queues_left = 0;
7960                 pf->rss_size = pf->num_lan_qps = 1;
7961
7962                 /* make sure all the fancies are disabled */
7963                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
7964                                I40E_FLAG_FD_SB_ENABLED  |
7965                                I40E_FLAG_FD_ATR_ENABLED |
7966                                I40E_FLAG_DCB_ENABLED    |
7967                                I40E_FLAG_SRIOV_ENABLED  |
7968                                I40E_FLAG_VMDQ_ENABLED);
7969         } else {
7970                 /* Not enough queues for all TCs */
7971                 if ((pf->flags & I40E_FLAG_DCB_ENABLED) &&
7972                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
7973                         pf->flags &= ~I40E_FLAG_DCB_ENABLED;
7974                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
7975                 }
7976                 pf->num_lan_qps = pf->rss_size_max;
7977                 queues_left -= pf->num_lan_qps;
7978         }
7979
7980         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7981                 if (queues_left > 1) {
7982                         queues_left -= 1; /* save 1 queue for FD */
7983                 } else {
7984                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7985                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
7986                 }
7987         }
7988
7989         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
7990             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
7991                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
7992                                         (queues_left / pf->num_vf_qps));
7993                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
7994         }
7995
7996         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7997             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
7998                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
7999                                           (queues_left / pf->num_vmdq_qps));
8000                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
8001         }
8002
8003         pf->queues_left = queues_left;
8004         return;
8005 }
8006
8007 /**
8008  * i40e_setup_pf_filter_control - Setup PF static filter control
8009  * @pf: PF to be setup
8010  *
8011  * i40e_setup_pf_filter_control sets up a pf's initial filter control
8012  * settings. If PE/FCoE are enabled then it will also set the per PF
8013  * based filter sizes required for them. It also enables Flow director,
8014  * ethertype and macvlan type filter settings for the pf.
8015  *
8016  * Returns 0 on success, negative on failure
8017  **/
8018 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
8019 {
8020         struct i40e_filter_control_settings *settings = &pf->filter_settings;
8021
8022         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
8023
8024         /* Flow Director is enabled */
8025         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
8026                 settings->enable_fdir = true;
8027
8028         /* Ethtype and MACVLAN filters enabled for PF */
8029         settings->enable_ethtype = true;
8030         settings->enable_macvlan = true;
8031
8032         if (i40e_set_filter_control(&pf->hw, settings))
8033                 return -ENOENT;
8034
8035         return 0;
8036 }
8037
8038 #define INFO_STRING_LEN 255
8039 static void i40e_print_features(struct i40e_pf *pf)
8040 {
8041         struct i40e_hw *hw = &pf->hw;
8042         char *buf, *string;
8043
8044         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
8045         if (!string) {
8046                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
8047                 return;
8048         }
8049
8050         buf = string;
8051
8052         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
8053 #ifdef CONFIG_PCI_IOV
8054         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
8055 #endif
8056         buf += sprintf(buf, "VSIs: %d QP: %d ", pf->hw.func_caps.num_vsis,
8057                        pf->vsi[pf->lan_vsi]->num_queue_pairs);
8058
8059         if (pf->flags & I40E_FLAG_RSS_ENABLED)
8060                 buf += sprintf(buf, "RSS ");
8061         buf += sprintf(buf, "FDir ");
8062         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
8063                 buf += sprintf(buf, "ATR ");
8064         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
8065                 buf += sprintf(buf, "NTUPLE ");
8066         if (pf->flags & I40E_FLAG_DCB_ENABLED)
8067                 buf += sprintf(buf, "DCB ");
8068         if (pf->flags & I40E_FLAG_PTP)
8069                 buf += sprintf(buf, "PTP ");
8070
8071         BUG_ON(buf > (string + INFO_STRING_LEN));
8072         dev_info(&pf->pdev->dev, "%s\n", string);
8073         kfree(string);
8074 }
8075
8076 /**
8077  * i40e_probe - Device initialization routine
8078  * @pdev: PCI device information struct
8079  * @ent: entry in i40e_pci_tbl
8080  *
8081  * i40e_probe initializes a pf identified by a pci_dev structure.
8082  * The OS initialization, configuring of the pf private structure,
8083  * and a hardware reset occur.
8084  *
8085  * Returns 0 on success, negative on failure
8086  **/
8087 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8088 {
8089         struct i40e_driver_version dv;
8090         struct i40e_pf *pf;
8091         struct i40e_hw *hw;
8092         static u16 pfs_found;
8093         u16 link_status;
8094         int err = 0;
8095         u32 len;
8096
8097         err = pci_enable_device_mem(pdev);
8098         if (err)
8099                 return err;
8100
8101         /* set up for high or low dma */
8102         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
8103         if (err) {
8104                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
8105                 if (err) {
8106                         dev_err(&pdev->dev,
8107                                 "DMA configuration failed: 0x%x\n", err);
8108                         goto err_dma;
8109                 }
8110         }
8111
8112         /* set up pci connections */
8113         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
8114                                            IORESOURCE_MEM), i40e_driver_name);
8115         if (err) {
8116                 dev_info(&pdev->dev,
8117                          "pci_request_selected_regions failed %d\n", err);
8118                 goto err_pci_reg;
8119         }
8120
8121         pci_enable_pcie_error_reporting(pdev);
8122         pci_set_master(pdev);
8123
8124         /* Now that we have a PCI connection, we need to do the
8125          * low level device setup.  This is primarily setting up
8126          * the Admin Queue structures and then querying for the
8127          * device's current profile information.
8128          */
8129         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
8130         if (!pf) {
8131                 err = -ENOMEM;
8132                 goto err_pf_alloc;
8133         }
8134         pf->next_vsi = 0;
8135         pf->pdev = pdev;
8136         set_bit(__I40E_DOWN, &pf->state);
8137
8138         hw = &pf->hw;
8139         hw->back = pf;
8140         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
8141                               pci_resource_len(pdev, 0));
8142         if (!hw->hw_addr) {
8143                 err = -EIO;
8144                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
8145                          (unsigned int)pci_resource_start(pdev, 0),
8146                          (unsigned int)pci_resource_len(pdev, 0), err);
8147                 goto err_ioremap;
8148         }
8149         hw->vendor_id = pdev->vendor;
8150         hw->device_id = pdev->device;
8151         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
8152         hw->subsystem_vendor_id = pdev->subsystem_vendor;
8153         hw->subsystem_device_id = pdev->subsystem_device;
8154         hw->bus.device = PCI_SLOT(pdev->devfn);
8155         hw->bus.func = PCI_FUNC(pdev->devfn);
8156         pf->instance = pfs_found;
8157
8158         /* do a special CORER for clearing PXE mode once at init */
8159         if (hw->revision_id == 0 &&
8160             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
8161                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
8162                 i40e_flush(hw);
8163                 msleep(200);
8164                 pf->corer_count++;
8165
8166                 i40e_clear_pxe_mode(hw);
8167         }
8168
8169         /* Reset here to make sure all is clean and to define PF 'n' */
8170         err = i40e_pf_reset(hw);
8171         if (err) {
8172                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
8173                 goto err_pf_reset;
8174         }
8175         pf->pfr_count++;
8176
8177         hw->aq.num_arq_entries = I40E_AQ_LEN;
8178         hw->aq.num_asq_entries = I40E_AQ_LEN;
8179         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
8180         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
8181         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
8182         snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
8183                  "%s-pf%d:misc",
8184                  dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
8185
8186         err = i40e_init_shared_code(hw);
8187         if (err) {
8188                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
8189                 goto err_pf_reset;
8190         }
8191
8192         /* set up a default setting for link flow control */
8193         pf->hw.fc.requested_mode = I40E_FC_NONE;
8194
8195         err = i40e_init_adminq(hw);
8196         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
8197         if (err) {
8198                 dev_info(&pdev->dev,
8199                          "init_adminq failed: %d expecting API %02x.%02x\n",
8200                          err,
8201                          I40E_FW_API_VERSION_MAJOR, I40E_FW_API_VERSION_MINOR);
8202                 goto err_pf_reset;
8203         }
8204
8205         i40e_verify_eeprom(pf);
8206
8207         i40e_clear_pxe_mode(hw);
8208         err = i40e_get_capabilities(pf);
8209         if (err)
8210                 goto err_adminq_setup;
8211
8212         err = i40e_sw_init(pf);
8213         if (err) {
8214                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
8215                 goto err_sw_init;
8216         }
8217
8218         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
8219                                 hw->func_caps.num_rx_qp,
8220                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
8221         if (err) {
8222                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
8223                 goto err_init_lan_hmc;
8224         }
8225
8226         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
8227         if (err) {
8228                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
8229                 err = -ENOENT;
8230                 goto err_configure_lan_hmc;
8231         }
8232
8233         i40e_get_mac_addr(hw, hw->mac.addr);
8234         if (!is_valid_ether_addr(hw->mac.addr)) {
8235                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
8236                 err = -EIO;
8237                 goto err_mac_addr;
8238         }
8239         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
8240         memcpy(hw->mac.perm_addr, hw->mac.addr, ETH_ALEN);
8241
8242         pci_set_drvdata(pdev, pf);
8243         pci_save_state(pdev);
8244 #ifdef CONFIG_I40E_DCB
8245         err = i40e_init_pf_dcb(pf);
8246         if (err) {
8247                 dev_info(&pdev->dev, "init_pf_dcb failed: %d\n", err);
8248                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
8249                 goto err_init_dcb;
8250         }
8251 #endif /* CONFIG_I40E_DCB */
8252
8253         /* set up periodic task facility */
8254         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
8255         pf->service_timer_period = HZ;
8256
8257         INIT_WORK(&pf->service_task, i40e_service_task);
8258         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
8259         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
8260         pf->link_check_timeout = jiffies;
8261
8262         /* WoL defaults to disabled */
8263         pf->wol_en = false;
8264         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
8265
8266         /* set up the main switch operations */
8267         i40e_determine_queue_usage(pf);
8268         i40e_init_interrupt_scheme(pf);
8269
8270         /* Set up the *vsi struct based on the number of VSIs in the HW,
8271          * and set up our local tracking of the MAIN PF vsi.
8272          */
8273         len = sizeof(struct i40e_vsi *) * pf->hw.func_caps.num_vsis;
8274         pf->vsi = kzalloc(len, GFP_KERNEL);
8275         if (!pf->vsi) {
8276                 err = -ENOMEM;
8277                 goto err_switch_setup;
8278         }
8279
8280         err = i40e_setup_pf_switch(pf, false);
8281         if (err) {
8282                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
8283                 goto err_vsis;
8284         }
8285
8286         /* The main driver is (mostly) up and happy. We need to set this state
8287          * before setting up the misc vector or we get a race and the vector
8288          * ends up disabled forever.
8289          */
8290         clear_bit(__I40E_DOWN, &pf->state);
8291
8292         /* In case of MSIX we are going to setup the misc vector right here
8293          * to handle admin queue events etc. In case of legacy and MSI
8294          * the misc functionality and queue processing is combined in
8295          * the same vector and that gets setup at open.
8296          */
8297         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8298                 err = i40e_setup_misc_vector(pf);
8299                 if (err) {
8300                         dev_info(&pdev->dev,
8301                                  "setup of misc vector failed: %d\n", err);
8302                         goto err_vsis;
8303                 }
8304         }
8305
8306         /* prep for VF support */
8307         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8308             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
8309             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
8310                 u32 val;
8311
8312                 /* disable link interrupts for VFs */
8313                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
8314                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
8315                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
8316                 i40e_flush(hw);
8317
8318                 if (pci_num_vf(pdev)) {
8319                         dev_info(&pdev->dev,
8320                                  "Active VFs found, allocating resources.\n");
8321                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
8322                         if (err)
8323                                 dev_info(&pdev->dev,
8324                                          "Error %d allocating resources for existing VFs\n",
8325                                          err);
8326                 }
8327         }
8328
8329         pfs_found++;
8330
8331         i40e_dbg_pf_init(pf);
8332
8333         /* tell the firmware that we're starting */
8334         dv.major_version = DRV_VERSION_MAJOR;
8335         dv.minor_version = DRV_VERSION_MINOR;
8336         dv.build_version = DRV_VERSION_BUILD;
8337         dv.subbuild_version = 0;
8338         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
8339
8340         /* since everything's happy, start the service_task timer */
8341         mod_timer(&pf->service_timer,
8342                   round_jiffies(jiffies + pf->service_timer_period));
8343
8344         /* Get the negotiated link width and speed from PCI config space */
8345         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
8346
8347         i40e_set_pci_config_data(hw, link_status);
8348
8349         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
8350                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
8351                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
8352                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
8353                  "Unknown"),
8354                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
8355                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
8356                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
8357                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
8358                  "Unknown"));
8359
8360         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
8361             hw->bus.speed < i40e_bus_speed_8000) {
8362                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
8363                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
8364         }
8365
8366         /* print a string summarizing features */
8367         i40e_print_features(pf);
8368
8369         return 0;
8370
8371         /* Unwind what we've done if something failed in the setup */
8372 err_vsis:
8373         set_bit(__I40E_DOWN, &pf->state);
8374         i40e_clear_interrupt_scheme(pf);
8375         kfree(pf->vsi);
8376 err_switch_setup:
8377         i40e_reset_interrupt_capability(pf);
8378         del_timer_sync(&pf->service_timer);
8379 #ifdef CONFIG_I40E_DCB
8380 err_init_dcb:
8381 #endif /* CONFIG_I40E_DCB */
8382 err_mac_addr:
8383 err_configure_lan_hmc:
8384         (void)i40e_shutdown_lan_hmc(hw);
8385 err_init_lan_hmc:
8386         kfree(pf->qp_pile);
8387         kfree(pf->irq_pile);
8388 err_sw_init:
8389 err_adminq_setup:
8390         (void)i40e_shutdown_adminq(hw);
8391 err_pf_reset:
8392         iounmap(hw->hw_addr);
8393 err_ioremap:
8394         kfree(pf);
8395 err_pf_alloc:
8396         pci_disable_pcie_error_reporting(pdev);
8397         pci_release_selected_regions(pdev,
8398                                      pci_select_bars(pdev, IORESOURCE_MEM));
8399 err_pci_reg:
8400 err_dma:
8401         pci_disable_device(pdev);
8402         return err;
8403 }
8404
8405 /**
8406  * i40e_remove - Device removal routine
8407  * @pdev: PCI device information struct
8408  *
8409  * i40e_remove is called by the PCI subsystem to alert the driver
8410  * that is should release a PCI device.  This could be caused by a
8411  * Hot-Plug event, or because the driver is going to be removed from
8412  * memory.
8413  **/
8414 static void i40e_remove(struct pci_dev *pdev)
8415 {
8416         struct i40e_pf *pf = pci_get_drvdata(pdev);
8417         i40e_status ret_code;
8418         u32 reg;
8419         int i;
8420
8421         i40e_dbg_pf_exit(pf);
8422
8423         i40e_ptp_stop(pf);
8424
8425         /* no more scheduling of any task */
8426         set_bit(__I40E_DOWN, &pf->state);
8427         del_timer_sync(&pf->service_timer);
8428         cancel_work_sync(&pf->service_task);
8429
8430         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
8431                 i40e_free_vfs(pf);
8432                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
8433         }
8434
8435         i40e_fdir_teardown(pf);
8436
8437         /* If there is a switch structure or any orphans, remove them.
8438          * This will leave only the PF's VSI remaining.
8439          */
8440         for (i = 0; i < I40E_MAX_VEB; i++) {
8441                 if (!pf->veb[i])
8442                         continue;
8443
8444                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
8445                     pf->veb[i]->uplink_seid == 0)
8446                         i40e_switch_branch_release(pf->veb[i]);
8447         }
8448
8449         /* Now we can shutdown the PF's VSI, just before we kill
8450          * adminq and hmc.
8451          */
8452         if (pf->vsi[pf->lan_vsi])
8453                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
8454
8455         i40e_stop_misc_vector(pf);
8456         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8457                 synchronize_irq(pf->msix_entries[0].vector);
8458                 free_irq(pf->msix_entries[0].vector, pf);
8459         }
8460
8461         /* shutdown and destroy the HMC */
8462         ret_code = i40e_shutdown_lan_hmc(&pf->hw);
8463         if (ret_code)
8464                 dev_warn(&pdev->dev,
8465                          "Failed to destroy the HMC resources: %d\n", ret_code);
8466
8467         /* shutdown the adminq */
8468         ret_code = i40e_shutdown_adminq(&pf->hw);
8469         if (ret_code)
8470                 dev_warn(&pdev->dev,
8471                          "Failed to destroy the Admin Queue resources: %d\n",
8472                          ret_code);
8473
8474         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
8475         i40e_clear_interrupt_scheme(pf);
8476         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
8477                 if (pf->vsi[i]) {
8478                         i40e_vsi_clear_rings(pf->vsi[i]);
8479                         i40e_vsi_clear(pf->vsi[i]);
8480                         pf->vsi[i] = NULL;
8481                 }
8482         }
8483
8484         for (i = 0; i < I40E_MAX_VEB; i++) {
8485                 kfree(pf->veb[i]);
8486                 pf->veb[i] = NULL;
8487         }
8488
8489         kfree(pf->qp_pile);
8490         kfree(pf->irq_pile);
8491         kfree(pf->sw_config);
8492         kfree(pf->vsi);
8493
8494         /* force a PF reset to clean anything leftover */
8495         reg = rd32(&pf->hw, I40E_PFGEN_CTRL);
8496         wr32(&pf->hw, I40E_PFGEN_CTRL, (reg | I40E_PFGEN_CTRL_PFSWR_MASK));
8497         i40e_flush(&pf->hw);
8498
8499         iounmap(pf->hw.hw_addr);
8500         kfree(pf);
8501         pci_release_selected_regions(pdev,
8502                                      pci_select_bars(pdev, IORESOURCE_MEM));
8503
8504         pci_disable_pcie_error_reporting(pdev);
8505         pci_disable_device(pdev);
8506 }
8507
8508 /**
8509  * i40e_pci_error_detected - warning that something funky happened in PCI land
8510  * @pdev: PCI device information struct
8511  *
8512  * Called to warn that something happened and the error handling steps
8513  * are in progress.  Allows the driver to quiesce things, be ready for
8514  * remediation.
8515  **/
8516 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
8517                                                 enum pci_channel_state error)
8518 {
8519         struct i40e_pf *pf = pci_get_drvdata(pdev);
8520
8521         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
8522
8523         /* shutdown all operations */
8524         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
8525                 rtnl_lock();
8526                 i40e_prep_for_reset(pf);
8527                 rtnl_unlock();
8528         }
8529
8530         /* Request a slot reset */
8531         return PCI_ERS_RESULT_NEED_RESET;
8532 }
8533
8534 /**
8535  * i40e_pci_error_slot_reset - a PCI slot reset just happened
8536  * @pdev: PCI device information struct
8537  *
8538  * Called to find if the driver can work with the device now that
8539  * the pci slot has been reset.  If a basic connection seems good
8540  * (registers are readable and have sane content) then return a
8541  * happy little PCI_ERS_RESULT_xxx.
8542  **/
8543 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
8544 {
8545         struct i40e_pf *pf = pci_get_drvdata(pdev);
8546         pci_ers_result_t result;
8547         int err;
8548         u32 reg;
8549
8550         dev_info(&pdev->dev, "%s\n", __func__);
8551         if (pci_enable_device_mem(pdev)) {
8552                 dev_info(&pdev->dev,
8553                          "Cannot re-enable PCI device after reset.\n");
8554                 result = PCI_ERS_RESULT_DISCONNECT;
8555         } else {
8556                 pci_set_master(pdev);
8557                 pci_restore_state(pdev);
8558                 pci_save_state(pdev);
8559                 pci_wake_from_d3(pdev, false);
8560
8561                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
8562                 if (reg == 0)
8563                         result = PCI_ERS_RESULT_RECOVERED;
8564                 else
8565                         result = PCI_ERS_RESULT_DISCONNECT;
8566         }
8567
8568         err = pci_cleanup_aer_uncorrect_error_status(pdev);
8569         if (err) {
8570                 dev_info(&pdev->dev,
8571                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
8572                          err);
8573                 /* non-fatal, continue */
8574         }
8575
8576         return result;
8577 }
8578
8579 /**
8580  * i40e_pci_error_resume - restart operations after PCI error recovery
8581  * @pdev: PCI device information struct
8582  *
8583  * Called to allow the driver to bring things back up after PCI error
8584  * and/or reset recovery has finished.
8585  **/
8586 static void i40e_pci_error_resume(struct pci_dev *pdev)
8587 {
8588         struct i40e_pf *pf = pci_get_drvdata(pdev);
8589
8590         dev_info(&pdev->dev, "%s\n", __func__);
8591         if (test_bit(__I40E_SUSPENDED, &pf->state))
8592                 return;
8593
8594         rtnl_lock();
8595         i40e_handle_reset_warning(pf);
8596         rtnl_lock();
8597 }
8598
8599 /**
8600  * i40e_shutdown - PCI callback for shutting down
8601  * @pdev: PCI device information struct
8602  **/
8603 static void i40e_shutdown(struct pci_dev *pdev)
8604 {
8605         struct i40e_pf *pf = pci_get_drvdata(pdev);
8606         struct i40e_hw *hw = &pf->hw;
8607
8608         set_bit(__I40E_SUSPENDED, &pf->state);
8609         set_bit(__I40E_DOWN, &pf->state);
8610         rtnl_lock();
8611         i40e_prep_for_reset(pf);
8612         rtnl_unlock();
8613
8614         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
8615         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
8616
8617         if (system_state == SYSTEM_POWER_OFF) {
8618                 pci_wake_from_d3(pdev, pf->wol_en);
8619                 pci_set_power_state(pdev, PCI_D3hot);
8620         }
8621 }
8622
8623 #ifdef CONFIG_PM
8624 /**
8625  * i40e_suspend - PCI callback for moving to D3
8626  * @pdev: PCI device information struct
8627  **/
8628 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
8629 {
8630         struct i40e_pf *pf = pci_get_drvdata(pdev);
8631         struct i40e_hw *hw = &pf->hw;
8632
8633         set_bit(__I40E_SUSPENDED, &pf->state);
8634         set_bit(__I40E_DOWN, &pf->state);
8635         rtnl_lock();
8636         i40e_prep_for_reset(pf);
8637         rtnl_unlock();
8638
8639         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
8640         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
8641
8642         pci_wake_from_d3(pdev, pf->wol_en);
8643         pci_set_power_state(pdev, PCI_D3hot);
8644
8645         return 0;
8646 }
8647
8648 /**
8649  * i40e_resume - PCI callback for waking up from D3
8650  * @pdev: PCI device information struct
8651  **/
8652 static int i40e_resume(struct pci_dev *pdev)
8653 {
8654         struct i40e_pf *pf = pci_get_drvdata(pdev);
8655         u32 err;
8656
8657         pci_set_power_state(pdev, PCI_D0);
8658         pci_restore_state(pdev);
8659         /* pci_restore_state() clears dev->state_saves, so
8660          * call pci_save_state() again to restore it.
8661          */
8662         pci_save_state(pdev);
8663
8664         err = pci_enable_device_mem(pdev);
8665         if (err) {
8666                 dev_err(&pdev->dev,
8667                         "%s: Cannot enable PCI device from suspend\n",
8668                         __func__);
8669                 return err;
8670         }
8671         pci_set_master(pdev);
8672
8673         /* no wakeup events while running */
8674         pci_wake_from_d3(pdev, false);
8675
8676         /* handling the reset will rebuild the device state */
8677         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
8678                 clear_bit(__I40E_DOWN, &pf->state);
8679                 rtnl_lock();
8680                 i40e_reset_and_rebuild(pf, false);
8681                 rtnl_unlock();
8682         }
8683
8684         return 0;
8685 }
8686
8687 #endif
8688 static const struct pci_error_handlers i40e_err_handler = {
8689         .error_detected = i40e_pci_error_detected,
8690         .slot_reset = i40e_pci_error_slot_reset,
8691         .resume = i40e_pci_error_resume,
8692 };
8693
8694 static struct pci_driver i40e_driver = {
8695         .name     = i40e_driver_name,
8696         .id_table = i40e_pci_tbl,
8697         .probe    = i40e_probe,
8698         .remove   = i40e_remove,
8699 #ifdef CONFIG_PM
8700         .suspend  = i40e_suspend,
8701         .resume   = i40e_resume,
8702 #endif
8703         .shutdown = i40e_shutdown,
8704         .err_handler = &i40e_err_handler,
8705         .sriov_configure = i40e_pci_sriov_configure,
8706 };
8707
8708 /**
8709  * i40e_init_module - Driver registration routine
8710  *
8711  * i40e_init_module is the first routine called when the driver is
8712  * loaded. All it does is register with the PCI subsystem.
8713  **/
8714 static int __init i40e_init_module(void)
8715 {
8716         pr_info("%s: %s - version %s\n", i40e_driver_name,
8717                 i40e_driver_string, i40e_driver_version_str);
8718         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
8719         i40e_dbg_init();
8720         return pci_register_driver(&i40e_driver);
8721 }
8722 module_init(i40e_init_module);
8723
8724 /**
8725  * i40e_exit_module - Driver exit cleanup routine
8726  *
8727  * i40e_exit_module is called just before the driver is removed
8728  * from memory.
8729  **/
8730 static void __exit i40e_exit_module(void)
8731 {
8732         pci_unregister_driver(&i40e_driver);
8733         i40e_dbg_exit();
8734 }
8735 module_exit(i40e_exit_module);