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 #ifdef CONFIG_I40E_VXLAN
4275         vxlan_get_rx_port(netdev);
4276 #endif
4277
4278         return 0;
4279 }
4280
4281 /**
4282  * i40e_vsi_open -
4283  * @vsi: the VSI to open
4284  *
4285  * Finish initialization of the VSI.
4286  *
4287  * Returns 0 on success, negative value on failure
4288  **/
4289 int i40e_vsi_open(struct i40e_vsi *vsi)
4290 {
4291         struct i40e_pf *pf = vsi->back;
4292         char int_name[IFNAMSIZ];
4293         int err;
4294
4295         /* allocate descriptors */
4296         err = i40e_vsi_setup_tx_resources(vsi);
4297         if (err)
4298                 goto err_setup_tx;
4299         err = i40e_vsi_setup_rx_resources(vsi);
4300         if (err)
4301                 goto err_setup_rx;
4302
4303         err = i40e_vsi_configure(vsi);
4304         if (err)
4305                 goto err_setup_rx;
4306
4307         if (!vsi->netdev) {
4308                 err = EINVAL;
4309                 goto err_setup_rx;
4310         }
4311         snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4312                  dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4313         err = i40e_vsi_request_irq(vsi, int_name);
4314         if (err)
4315                 goto err_setup_rx;
4316
4317         /* Notify the stack of the actual queue counts. */
4318         err = netif_set_real_num_tx_queues(vsi->netdev, vsi->num_queue_pairs);
4319         if (err)
4320                 goto err_set_queues;
4321
4322         err = netif_set_real_num_rx_queues(vsi->netdev, vsi->num_queue_pairs);
4323         if (err)
4324                 goto err_set_queues;
4325
4326         err = i40e_up_complete(vsi);
4327         if (err)
4328                 goto err_up_complete;
4329
4330         return 0;
4331
4332 err_up_complete:
4333         i40e_down(vsi);
4334 err_set_queues:
4335         i40e_vsi_free_irq(vsi);
4336 err_setup_rx:
4337         i40e_vsi_free_rx_resources(vsi);
4338 err_setup_tx:
4339         i40e_vsi_free_tx_resources(vsi);
4340         if (vsi == pf->vsi[pf->lan_vsi])
4341                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4342
4343         return err;
4344 }
4345
4346 /**
4347  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4348  * @pf: Pointer to pf
4349  *
4350  * This function destroys the hlist where all the Flow Director
4351  * filters were saved.
4352  **/
4353 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4354 {
4355         struct i40e_fdir_filter *filter;
4356         struct hlist_node *node2;
4357
4358         hlist_for_each_entry_safe(filter, node2,
4359                                   &pf->fdir_filter_list, fdir_node) {
4360                 hlist_del(&filter->fdir_node);
4361                 kfree(filter);
4362         }
4363         pf->fdir_pf_active_filters = 0;
4364 }
4365
4366 /**
4367  * i40e_close - Disables a network interface
4368  * @netdev: network interface device structure
4369  *
4370  * The close entry point is called when an interface is de-activated
4371  * by the OS.  The hardware is still under the driver's control, but
4372  * this netdev interface is disabled.
4373  *
4374  * Returns 0, this is not allowed to fail
4375  **/
4376 static int i40e_close(struct net_device *netdev)
4377 {
4378         struct i40e_netdev_priv *np = netdev_priv(netdev);
4379         struct i40e_vsi *vsi = np->vsi;
4380
4381         if (test_and_set_bit(__I40E_DOWN, &vsi->state))
4382                 return 0;
4383
4384         i40e_down(vsi);
4385         i40e_vsi_free_irq(vsi);
4386
4387         i40e_vsi_free_tx_resources(vsi);
4388         i40e_vsi_free_rx_resources(vsi);
4389
4390         return 0;
4391 }
4392
4393 /**
4394  * i40e_do_reset - Start a PF or Core Reset sequence
4395  * @pf: board private structure
4396  * @reset_flags: which reset is requested
4397  *
4398  * The essential difference in resets is that the PF Reset
4399  * doesn't clear the packet buffers, doesn't reset the PE
4400  * firmware, and doesn't bother the other PFs on the chip.
4401  **/
4402 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
4403 {
4404         u32 val;
4405
4406         WARN_ON(in_interrupt());
4407
4408         /* do the biggest reset indicated */
4409         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
4410
4411                 /* Request a Global Reset
4412                  *
4413                  * This will start the chip's countdown to the actual full
4414                  * chip reset event, and a warning interrupt to be sent
4415                  * to all PFs, including the requestor.  Our handler
4416                  * for the warning interrupt will deal with the shutdown
4417                  * and recovery of the switch setup.
4418                  */
4419                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
4420                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4421                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
4422                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4423
4424         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
4425
4426                 /* Request a Core Reset
4427                  *
4428                  * Same as Global Reset, except does *not* include the MAC/PHY
4429                  */
4430                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
4431                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4432                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
4433                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4434                 i40e_flush(&pf->hw);
4435
4436         } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
4437
4438                 /* Request a Firmware Reset
4439                  *
4440                  * Same as Global reset, plus restarting the
4441                  * embedded firmware engine.
4442                  */
4443                 /* enable EMP Reset */
4444                 val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
4445                 val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
4446                 wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
4447
4448                 /* force the reset */
4449                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4450                 val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
4451                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4452                 i40e_flush(&pf->hw);
4453
4454         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
4455
4456                 /* Request a PF Reset
4457                  *
4458                  * Resets only the PF-specific registers
4459                  *
4460                  * This goes directly to the tear-down and rebuild of
4461                  * the switch, since we need to do all the recovery as
4462                  * for the Core Reset.
4463                  */
4464                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
4465                 i40e_handle_reset_warning(pf);
4466
4467         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
4468                 int v;
4469
4470                 /* Find the VSI(s) that requested a re-init */
4471                 dev_info(&pf->pdev->dev,
4472                          "VSI reinit requested\n");
4473                 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4474                         struct i40e_vsi *vsi = pf->vsi[v];
4475                         if (vsi != NULL &&
4476                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
4477                                 i40e_vsi_reinit_locked(pf->vsi[v]);
4478                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
4479                         }
4480                 }
4481
4482                 /* no further action needed, so return now */
4483                 return;
4484         } else {
4485                 dev_info(&pf->pdev->dev,
4486                          "bad reset request 0x%08x\n", reset_flags);
4487                 return;
4488         }
4489 }
4490
4491 #ifdef CONFIG_I40E_DCB
4492 /**
4493  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
4494  * @pf: board private structure
4495  * @old_cfg: current DCB config
4496  * @new_cfg: new DCB config
4497  **/
4498 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
4499                             struct i40e_dcbx_config *old_cfg,
4500                             struct i40e_dcbx_config *new_cfg)
4501 {
4502         bool need_reconfig = false;
4503
4504         /* Check if ETS configuration has changed */
4505         if (memcmp(&new_cfg->etscfg,
4506                    &old_cfg->etscfg,
4507                    sizeof(new_cfg->etscfg))) {
4508                 /* If Priority Table has changed reconfig is needed */
4509                 if (memcmp(&new_cfg->etscfg.prioritytable,
4510                            &old_cfg->etscfg.prioritytable,
4511                            sizeof(new_cfg->etscfg.prioritytable))) {
4512                         need_reconfig = true;
4513                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
4514                 }
4515
4516                 if (memcmp(&new_cfg->etscfg.tcbwtable,
4517                            &old_cfg->etscfg.tcbwtable,
4518                            sizeof(new_cfg->etscfg.tcbwtable)))
4519                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
4520
4521                 if (memcmp(&new_cfg->etscfg.tsatable,
4522                            &old_cfg->etscfg.tsatable,
4523                            sizeof(new_cfg->etscfg.tsatable)))
4524                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
4525         }
4526
4527         /* Check if PFC configuration has changed */
4528         if (memcmp(&new_cfg->pfc,
4529                    &old_cfg->pfc,
4530                    sizeof(new_cfg->pfc))) {
4531                 need_reconfig = true;
4532                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
4533         }
4534
4535         /* Check if APP Table has changed */
4536         if (memcmp(&new_cfg->app,
4537                    &old_cfg->app,
4538                    sizeof(new_cfg->app))) {
4539                 need_reconfig = true;
4540                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
4541         }
4542
4543         return need_reconfig;
4544 }
4545
4546 /**
4547  * i40e_handle_lldp_event - Handle LLDP Change MIB event
4548  * @pf: board private structure
4549  * @e: event info posted on ARQ
4550  **/
4551 static int i40e_handle_lldp_event(struct i40e_pf *pf,
4552                                   struct i40e_arq_event_info *e)
4553 {
4554         struct i40e_aqc_lldp_get_mib *mib =
4555                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
4556         struct i40e_hw *hw = &pf->hw;
4557         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
4558         struct i40e_dcbx_config tmp_dcbx_cfg;
4559         bool need_reconfig = false;
4560         int ret = 0;
4561         u8 type;
4562
4563         /* Ignore if event is not for Nearest Bridge */
4564         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
4565                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
4566         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
4567                 return ret;
4568
4569         /* Check MIB Type and return if event for Remote MIB update */
4570         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
4571         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
4572                 /* Update the remote cached instance and return */
4573                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
4574                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
4575                                 &hw->remote_dcbx_config);
4576                 goto exit;
4577         }
4578
4579         /* Convert/store the DCBX data from LLDPDU temporarily */
4580         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
4581         ret = i40e_lldp_to_dcb_config(e->msg_buf, &tmp_dcbx_cfg);
4582         if (ret) {
4583                 /* Error in LLDPDU parsing return */
4584                 dev_info(&pf->pdev->dev, "Failed parsing LLDPDU from event buffer\n");
4585                 goto exit;
4586         }
4587
4588         /* No change detected in DCBX configs */
4589         if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
4590                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
4591                 goto exit;
4592         }
4593
4594         need_reconfig = i40e_dcb_need_reconfig(pf, dcbx_cfg, &tmp_dcbx_cfg);
4595
4596         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg);
4597
4598         /* Overwrite the new configuration */
4599         *dcbx_cfg = tmp_dcbx_cfg;
4600
4601         if (!need_reconfig)
4602                 goto exit;
4603
4604         /* Reconfiguration needed quiesce all VSIs */
4605         i40e_pf_quiesce_all_vsi(pf);
4606
4607         /* Changes in configuration update VEB/VSI */
4608         i40e_dcb_reconfigure(pf);
4609
4610         i40e_pf_unquiesce_all_vsi(pf);
4611 exit:
4612         return ret;
4613 }
4614 #endif /* CONFIG_I40E_DCB */
4615
4616 /**
4617  * i40e_do_reset_safe - Protected reset path for userland calls.
4618  * @pf: board private structure
4619  * @reset_flags: which reset is requested
4620  *
4621  **/
4622 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
4623 {
4624         rtnl_lock();
4625         i40e_do_reset(pf, reset_flags);
4626         rtnl_unlock();
4627 }
4628
4629 /**
4630  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
4631  * @pf: board private structure
4632  * @e: event info posted on ARQ
4633  *
4634  * Handler for LAN Queue Overflow Event generated by the firmware for PF
4635  * and VF queues
4636  **/
4637 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
4638                                            struct i40e_arq_event_info *e)
4639 {
4640         struct i40e_aqc_lan_overflow *data =
4641                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
4642         u32 queue = le32_to_cpu(data->prtdcb_rupto);
4643         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
4644         struct i40e_hw *hw = &pf->hw;
4645         struct i40e_vf *vf;
4646         u16 vf_id;
4647
4648         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
4649                 queue, qtx_ctl);
4650
4651         /* Queue belongs to VF, find the VF and issue VF reset */
4652         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
4653             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
4654                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
4655                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
4656                 vf_id -= hw->func_caps.vf_base_id;
4657                 vf = &pf->vf[vf_id];
4658                 i40e_vc_notify_vf_reset(vf);
4659                 /* Allow VF to process pending reset notification */
4660                 msleep(20);
4661                 i40e_reset_vf(vf, false);
4662         }
4663 }
4664
4665 /**
4666  * i40e_service_event_complete - Finish up the service event
4667  * @pf: board private structure
4668  **/
4669 static void i40e_service_event_complete(struct i40e_pf *pf)
4670 {
4671         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
4672
4673         /* flush memory to make sure state is correct before next watchog */
4674         smp_mb__before_clear_bit();
4675         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
4676 }
4677
4678 /**
4679  * i40e_get_current_fd_count - Get the count of FD filters programmed in the HW
4680  * @pf: board private structure
4681  **/
4682 int i40e_get_current_fd_count(struct i40e_pf *pf)
4683 {
4684         int val, fcnt_prog;
4685         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
4686         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
4687                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
4688                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
4689         return fcnt_prog;
4690 }
4691
4692 /**
4693  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
4694  * @pf: board private structure
4695  **/
4696 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
4697 {
4698         u32 fcnt_prog, fcnt_avail;
4699
4700         /* Check if, FD SB or ATR was auto disabled and if there is enough room
4701          * to re-enable
4702          */
4703         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4704             (pf->flags & I40E_FLAG_FD_SB_ENABLED))
4705                 return;
4706         fcnt_prog = i40e_get_current_fd_count(pf);
4707         fcnt_avail = pf->hw.fdir_shared_filter_count +
4708                                                pf->fdir_pf_filter_count;
4709         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) {
4710                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
4711                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
4712                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
4713                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
4714                 }
4715         }
4716         /* Wait for some more space to be available to turn on ATR */
4717         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
4718                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4719                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
4720                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4721                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
4722                 }
4723         }
4724 }
4725
4726 /**
4727  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
4728  * @pf: board private structure
4729  **/
4730 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
4731 {
4732         if (!(pf->flags & I40E_FLAG_FDIR_REQUIRES_REINIT))
4733                 return;
4734
4735         /* if interface is down do nothing */
4736         if (test_bit(__I40E_DOWN, &pf->state))
4737                 return;
4738         i40e_fdir_check_and_reenable(pf);
4739
4740         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4741             (pf->flags & I40E_FLAG_FD_SB_ENABLED))
4742                 pf->flags &= ~I40E_FLAG_FDIR_REQUIRES_REINIT;
4743 }
4744
4745 /**
4746  * i40e_vsi_link_event - notify VSI of a link event
4747  * @vsi: vsi to be notified
4748  * @link_up: link up or down
4749  **/
4750 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
4751 {
4752         if (!vsi)
4753                 return;
4754
4755         switch (vsi->type) {
4756         case I40E_VSI_MAIN:
4757                 if (!vsi->netdev || !vsi->netdev_registered)
4758                         break;
4759
4760                 if (link_up) {
4761                         netif_carrier_on(vsi->netdev);
4762                         netif_tx_wake_all_queues(vsi->netdev);
4763                 } else {
4764                         netif_carrier_off(vsi->netdev);
4765                         netif_tx_stop_all_queues(vsi->netdev);
4766                 }
4767                 break;
4768
4769         case I40E_VSI_SRIOV:
4770                 break;
4771
4772         case I40E_VSI_VMDQ2:
4773         case I40E_VSI_CTRL:
4774         case I40E_VSI_MIRROR:
4775         default:
4776                 /* there is no notification for other VSIs */
4777                 break;
4778         }
4779 }
4780
4781 /**
4782  * i40e_veb_link_event - notify elements on the veb of a link event
4783  * @veb: veb to be notified
4784  * @link_up: link up or down
4785  **/
4786 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
4787 {
4788         struct i40e_pf *pf;
4789         int i;
4790
4791         if (!veb || !veb->pf)
4792                 return;
4793         pf = veb->pf;
4794
4795         /* depth first... */
4796         for (i = 0; i < I40E_MAX_VEB; i++)
4797                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
4798                         i40e_veb_link_event(pf->veb[i], link_up);
4799
4800         /* ... now the local VSIs */
4801         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4802                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
4803                         i40e_vsi_link_event(pf->vsi[i], link_up);
4804 }
4805
4806 /**
4807  * i40e_link_event - Update netif_carrier status
4808  * @pf: board private structure
4809  **/
4810 static void i40e_link_event(struct i40e_pf *pf)
4811 {
4812         bool new_link, old_link;
4813
4814         new_link = (pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP);
4815         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
4816
4817         if (new_link == old_link)
4818                 return;
4819
4820         if (!test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state))
4821                 netdev_info(pf->vsi[pf->lan_vsi]->netdev,
4822                             "NIC Link is %s\n", (new_link ? "Up" : "Down"));
4823
4824         /* Notify the base of the switch tree connected to
4825          * the link.  Floating VEBs are not notified.
4826          */
4827         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
4828                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
4829         else
4830                 i40e_vsi_link_event(pf->vsi[pf->lan_vsi], new_link);
4831
4832         if (pf->vf)
4833                 i40e_vc_notify_link_state(pf);
4834
4835         if (pf->flags & I40E_FLAG_PTP)
4836                 i40e_ptp_set_increment(pf);
4837 }
4838
4839 /**
4840  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
4841  * @pf: board private structure
4842  *
4843  * Set the per-queue flags to request a check for stuck queues in the irq
4844  * clean functions, then force interrupts to be sure the irq clean is called.
4845  **/
4846 static void i40e_check_hang_subtask(struct i40e_pf *pf)
4847 {
4848         int i, v;
4849
4850         /* If we're down or resetting, just bail */
4851         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
4852                 return;
4853
4854         /* for each VSI/netdev
4855          *     for each Tx queue
4856          *         set the check flag
4857          *     for each q_vector
4858          *         force an interrupt
4859          */
4860         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4861                 struct i40e_vsi *vsi = pf->vsi[v];
4862                 int armed = 0;
4863
4864                 if (!pf->vsi[v] ||
4865                     test_bit(__I40E_DOWN, &vsi->state) ||
4866                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
4867                         continue;
4868
4869                 for (i = 0; i < vsi->num_queue_pairs; i++) {
4870                         set_check_for_tx_hang(vsi->tx_rings[i]);
4871                         if (test_bit(__I40E_HANG_CHECK_ARMED,
4872                                      &vsi->tx_rings[i]->state))
4873                                 armed++;
4874                 }
4875
4876                 if (armed) {
4877                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
4878                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
4879                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
4880                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
4881                         } else {
4882                                 u16 vec = vsi->base_vector - 1;
4883                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
4884                                            I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
4885                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
4886                                         wr32(&vsi->back->hw,
4887                                              I40E_PFINT_DYN_CTLN(vec), val);
4888                         }
4889                         i40e_flush(&vsi->back->hw);
4890                 }
4891         }
4892 }
4893
4894 /**
4895  * i40e_watchdog_subtask - Check and bring link up
4896  * @pf: board private structure
4897  **/
4898 static void i40e_watchdog_subtask(struct i40e_pf *pf)
4899 {
4900         int i;
4901
4902         /* if interface is down do nothing */
4903         if (test_bit(__I40E_DOWN, &pf->state) ||
4904             test_bit(__I40E_CONFIG_BUSY, &pf->state))
4905                 return;
4906
4907         /* Update the stats for active netdevs so the network stack
4908          * can look at updated numbers whenever it cares to
4909          */
4910         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4911                 if (pf->vsi[i] && pf->vsi[i]->netdev)
4912                         i40e_update_stats(pf->vsi[i]);
4913
4914         /* Update the stats for the active switching components */
4915         for (i = 0; i < I40E_MAX_VEB; i++)
4916                 if (pf->veb[i])
4917                         i40e_update_veb_stats(pf->veb[i]);
4918
4919         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
4920 }
4921
4922 /**
4923  * i40e_reset_subtask - Set up for resetting the device and driver
4924  * @pf: board private structure
4925  **/
4926 static void i40e_reset_subtask(struct i40e_pf *pf)
4927 {
4928         u32 reset_flags = 0;
4929
4930         rtnl_lock();
4931         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
4932                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
4933                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
4934         }
4935         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
4936                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
4937                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4938         }
4939         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
4940                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
4941                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
4942         }
4943         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
4944                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
4945                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
4946         }
4947
4948         /* If there's a recovery already waiting, it takes
4949          * precedence before starting a new reset sequence.
4950          */
4951         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
4952                 i40e_handle_reset_warning(pf);
4953                 goto unlock;
4954         }
4955
4956         /* If we're already down or resetting, just bail */
4957         if (reset_flags &&
4958             !test_bit(__I40E_DOWN, &pf->state) &&
4959             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
4960                 i40e_do_reset(pf, reset_flags);
4961
4962 unlock:
4963         rtnl_unlock();
4964 }
4965
4966 /**
4967  * i40e_handle_link_event - Handle link event
4968  * @pf: board private structure
4969  * @e: event info posted on ARQ
4970  **/
4971 static void i40e_handle_link_event(struct i40e_pf *pf,
4972                                    struct i40e_arq_event_info *e)
4973 {
4974         struct i40e_hw *hw = &pf->hw;
4975         struct i40e_aqc_get_link_status *status =
4976                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
4977         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
4978
4979         /* save off old link status information */
4980         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
4981                sizeof(pf->hw.phy.link_info_old));
4982
4983         /* update link status */
4984         hw_link_info->phy_type = (enum i40e_aq_phy_type)status->phy_type;
4985         hw_link_info->link_speed = (enum i40e_aq_link_speed)status->link_speed;
4986         hw_link_info->link_info = status->link_info;
4987         hw_link_info->an_info = status->an_info;
4988         hw_link_info->ext_info = status->ext_info;
4989         hw_link_info->lse_enable =
4990                 le16_to_cpu(status->command_flags) &
4991                             I40E_AQ_LSE_ENABLE;
4992
4993         /* process the event */
4994         i40e_link_event(pf);
4995
4996         /* Do a new status request to re-enable LSE reporting
4997          * and load new status information into the hw struct,
4998          * then see if the status changed while processing the
4999          * initial event.
5000          */
5001         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
5002         i40e_link_event(pf);
5003 }
5004
5005 /**
5006  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5007  * @pf: board private structure
5008  **/
5009 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5010 {
5011         struct i40e_arq_event_info event;
5012         struct i40e_hw *hw = &pf->hw;
5013         u16 pending, i = 0;
5014         i40e_status ret;
5015         u16 opcode;
5016         u32 val;
5017
5018         if (!test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state))
5019                 return;
5020
5021         event.msg_size = I40E_MAX_AQ_BUF_SIZE;
5022         event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
5023         if (!event.msg_buf)
5024                 return;
5025
5026         do {
5027                 event.msg_size = I40E_MAX_AQ_BUF_SIZE; /* reinit each time */
5028                 ret = i40e_clean_arq_element(hw, &event, &pending);
5029                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK) {
5030                         dev_info(&pf->pdev->dev, "No ARQ event found\n");
5031                         break;
5032                 } else if (ret) {
5033                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5034                         break;
5035                 }
5036
5037                 opcode = le16_to_cpu(event.desc.opcode);
5038                 switch (opcode) {
5039
5040                 case i40e_aqc_opc_get_link_status:
5041                         i40e_handle_link_event(pf, &event);
5042                         break;
5043                 case i40e_aqc_opc_send_msg_to_pf:
5044                         ret = i40e_vc_process_vf_msg(pf,
5045                                         le16_to_cpu(event.desc.retval),
5046                                         le32_to_cpu(event.desc.cookie_high),
5047                                         le32_to_cpu(event.desc.cookie_low),
5048                                         event.msg_buf,
5049                                         event.msg_size);
5050                         break;
5051                 case i40e_aqc_opc_lldp_update_mib:
5052                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5053 #ifdef CONFIG_I40E_DCB
5054                         rtnl_lock();
5055                         ret = i40e_handle_lldp_event(pf, &event);
5056                         rtnl_unlock();
5057 #endif /* CONFIG_I40E_DCB */
5058                         break;
5059                 case i40e_aqc_opc_event_lan_overflow:
5060                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5061                         i40e_handle_lan_overflow_event(pf, &event);
5062                         break;
5063                 case i40e_aqc_opc_send_msg_to_peer:
5064                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5065                         break;
5066                 default:
5067                         dev_info(&pf->pdev->dev,
5068                                  "ARQ Error: Unknown event 0x%04x received\n",
5069                                  opcode);
5070                         break;
5071                 }
5072         } while (pending && (i++ < pf->adminq_work_limit));
5073
5074         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5075         /* re-enable Admin queue interrupt cause */
5076         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5077         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5078         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5079         i40e_flush(hw);
5080
5081         kfree(event.msg_buf);
5082 }
5083
5084 /**
5085  * i40e_verify_eeprom - make sure eeprom is good to use
5086  * @pf: board private structure
5087  **/
5088 static void i40e_verify_eeprom(struct i40e_pf *pf)
5089 {
5090         int err;
5091
5092         err = i40e_diag_eeprom_test(&pf->hw);
5093         if (err) {
5094                 /* retry in case of garbage read */
5095                 err = i40e_diag_eeprom_test(&pf->hw);
5096                 if (err) {
5097                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5098                                  err);
5099                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5100                 }
5101         }
5102
5103         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5104                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5105                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5106         }
5107 }
5108
5109 /**
5110  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5111  * @veb: pointer to the VEB instance
5112  *
5113  * This is a recursive function that first builds the attached VSIs then
5114  * recurses in to build the next layer of VEB.  We track the connections
5115  * through our own index numbers because the seid's from the HW could
5116  * change across the reset.
5117  **/
5118 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5119 {
5120         struct i40e_vsi *ctl_vsi = NULL;
5121         struct i40e_pf *pf = veb->pf;
5122         int v, veb_idx;
5123         int ret;
5124
5125         /* build VSI that owns this VEB, temporarily attached to base VEB */
5126         for (v = 0; v < pf->hw.func_caps.num_vsis && !ctl_vsi; v++) {
5127                 if (pf->vsi[v] &&
5128                     pf->vsi[v]->veb_idx == veb->idx &&
5129                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5130                         ctl_vsi = pf->vsi[v];
5131                         break;
5132                 }
5133         }
5134         if (!ctl_vsi) {
5135                 dev_info(&pf->pdev->dev,
5136                          "missing owner VSI for veb_idx %d\n", veb->idx);
5137                 ret = -ENOENT;
5138                 goto end_reconstitute;
5139         }
5140         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5141                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5142         ret = i40e_add_vsi(ctl_vsi);
5143         if (ret) {
5144                 dev_info(&pf->pdev->dev,
5145                          "rebuild of owner VSI failed: %d\n", ret);
5146                 goto end_reconstitute;
5147         }
5148         i40e_vsi_reset_stats(ctl_vsi);
5149
5150         /* create the VEB in the switch and move the VSI onto the VEB */
5151         ret = i40e_add_veb(veb, ctl_vsi);
5152         if (ret)
5153                 goto end_reconstitute;
5154
5155         /* create the remaining VSIs attached to this VEB */
5156         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
5157                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5158                         continue;
5159
5160                 if (pf->vsi[v]->veb_idx == veb->idx) {
5161                         struct i40e_vsi *vsi = pf->vsi[v];
5162                         vsi->uplink_seid = veb->seid;
5163                         ret = i40e_add_vsi(vsi);
5164                         if (ret) {
5165                                 dev_info(&pf->pdev->dev,
5166                                          "rebuild of vsi_idx %d failed: %d\n",
5167                                          v, ret);
5168                                 goto end_reconstitute;
5169                         }
5170                         i40e_vsi_reset_stats(vsi);
5171                 }
5172         }
5173
5174         /* create any VEBs attached to this VEB - RECURSION */
5175         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5176                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5177                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5178                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5179                         if (ret)
5180                                 break;
5181                 }
5182         }
5183
5184 end_reconstitute:
5185         return ret;
5186 }
5187
5188 /**
5189  * i40e_get_capabilities - get info about the HW
5190  * @pf: the PF struct
5191  **/
5192 static int i40e_get_capabilities(struct i40e_pf *pf)
5193 {
5194         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5195         u16 data_size;
5196         int buf_len;
5197         int err;
5198
5199         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5200         do {
5201                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5202                 if (!cap_buf)
5203                         return -ENOMEM;
5204
5205                 /* this loads the data into the hw struct for us */
5206                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5207                                             &data_size,
5208                                             i40e_aqc_opc_list_func_capabilities,
5209                                             NULL);
5210                 /* data loaded, buffer no longer needed */
5211                 kfree(cap_buf);
5212
5213                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
5214                         /* retry with a larger buffer */
5215                         buf_len = data_size;
5216                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
5217                         dev_info(&pf->pdev->dev,
5218                                  "capability discovery failed: aq=%d\n",
5219                                  pf->hw.aq.asq_last_status);
5220                         return -ENODEV;
5221                 }
5222         } while (err);
5223
5224         /* increment MSI-X count because current FW skips one */
5225         pf->hw.func_caps.num_msix_vectors++;
5226
5227         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
5228             (pf->hw.aq.fw_maj_ver < 2)) {
5229                 pf->hw.func_caps.num_msix_vectors++;
5230                 pf->hw.func_caps.num_msix_vectors_vf++;
5231         }
5232
5233         if (pf->hw.debug_mask & I40E_DEBUG_USER)
5234                 dev_info(&pf->pdev->dev,
5235                          "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",
5236                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
5237                          pf->hw.func_caps.num_msix_vectors,
5238                          pf->hw.func_caps.num_msix_vectors_vf,
5239                          pf->hw.func_caps.fd_filters_guaranteed,
5240                          pf->hw.func_caps.fd_filters_best_effort,
5241                          pf->hw.func_caps.num_tx_qp,
5242                          pf->hw.func_caps.num_vsis);
5243
5244 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
5245                        + pf->hw.func_caps.num_vfs)
5246         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
5247                 dev_info(&pf->pdev->dev,
5248                          "got num_vsis %d, setting num_vsis to %d\n",
5249                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
5250                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
5251         }
5252
5253         return 0;
5254 }
5255
5256 static int i40e_vsi_clear(struct i40e_vsi *vsi);
5257
5258 /**
5259  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
5260  * @pf: board private structure
5261  **/
5262 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
5263 {
5264         struct i40e_vsi *vsi;
5265         bool new_vsi = false;
5266         int err, i;
5267
5268         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
5269                 return;
5270
5271         /* find existing VSI and see if it needs configuring */
5272         vsi = NULL;
5273         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
5274                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5275                         vsi = pf->vsi[i];
5276                         break;
5277                 }
5278         }
5279
5280         /* create a new VSI if none exists */
5281         if (!vsi) {
5282                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
5283                                      pf->vsi[pf->lan_vsi]->seid, 0);
5284                 if (!vsi) {
5285                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
5286                         goto err_vsi;
5287                 }
5288                 new_vsi = true;
5289         }
5290         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
5291
5292         err = i40e_vsi_setup_tx_resources(vsi);
5293         if (err)
5294                 goto err_setup_tx;
5295         err = i40e_vsi_setup_rx_resources(vsi);
5296         if (err)
5297                 goto err_setup_rx;
5298
5299         if (new_vsi) {
5300                 char int_name[IFNAMSIZ + 9];
5301                 err = i40e_vsi_configure(vsi);
5302                 if (err)
5303                         goto err_setup_rx;
5304                 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
5305                          dev_driver_string(&pf->pdev->dev));
5306                 err = i40e_vsi_request_irq(vsi, int_name);
5307                 if (err)
5308                         goto err_setup_rx;
5309                 err = i40e_up_complete(vsi);
5310                 if (err)
5311                         goto err_up_complete;
5312                 clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
5313         }
5314
5315         return;
5316
5317 err_up_complete:
5318         i40e_down(vsi);
5319         i40e_vsi_free_irq(vsi);
5320 err_setup_rx:
5321         i40e_vsi_free_rx_resources(vsi);
5322 err_setup_tx:
5323         i40e_vsi_free_tx_resources(vsi);
5324 err_vsi:
5325         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
5326         i40e_vsi_clear(vsi);
5327 }
5328
5329 /**
5330  * i40e_fdir_teardown - release the Flow Director resources
5331  * @pf: board private structure
5332  **/
5333 static void i40e_fdir_teardown(struct i40e_pf *pf)
5334 {
5335         int i;
5336
5337         i40e_fdir_filter_exit(pf);
5338         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
5339                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5340                         i40e_vsi_release(pf->vsi[i]);
5341                         break;
5342                 }
5343         }
5344 }
5345
5346 /**
5347  * i40e_prep_for_reset - prep for the core to reset
5348  * @pf: board private structure
5349  *
5350  * Close up the VFs and other things in prep for pf Reset.
5351   **/
5352 static int i40e_prep_for_reset(struct i40e_pf *pf)
5353 {
5354         struct i40e_hw *hw = &pf->hw;
5355         i40e_status ret;
5356         u32 v;
5357
5358         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
5359         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
5360                 return 0;
5361
5362         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
5363
5364         if (i40e_check_asq_alive(hw))
5365                 i40e_vc_notify_reset(pf);
5366
5367         /* quiesce the VSIs and their queues that are not already DOWN */
5368         i40e_pf_quiesce_all_vsi(pf);
5369
5370         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
5371                 if (pf->vsi[v])
5372                         pf->vsi[v]->seid = 0;
5373         }
5374
5375         i40e_shutdown_adminq(&pf->hw);
5376
5377         /* call shutdown HMC */
5378         ret = i40e_shutdown_lan_hmc(hw);
5379         if (ret) {
5380                 dev_info(&pf->pdev->dev, "shutdown_lan_hmc failed: %d\n", ret);
5381                 clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
5382         }
5383         return ret;
5384 }
5385
5386 /**
5387  * i40e_reset_and_rebuild - reset and rebuild using a saved config
5388  * @pf: board private structure
5389  * @reinit: if the Main VSI needs to re-initialized.
5390  **/
5391 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
5392 {
5393         struct i40e_driver_version dv;
5394         struct i40e_hw *hw = &pf->hw;
5395         i40e_status ret;
5396         u32 v;
5397
5398         /* Now we wait for GRST to settle out.
5399          * We don't have to delete the VEBs or VSIs from the hw switch
5400          * because the reset will make them disappear.
5401          */
5402         ret = i40e_pf_reset(hw);
5403         if (ret)
5404                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
5405         pf->pfr_count++;
5406
5407         if (test_bit(__I40E_DOWN, &pf->state))
5408                 goto end_core_reset;
5409         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
5410
5411         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
5412         ret = i40e_init_adminq(&pf->hw);
5413         if (ret) {
5414                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
5415                 goto end_core_reset;
5416         }
5417
5418         /* re-verify the eeprom if we just had an EMP reset */
5419         if (test_bit(__I40E_EMP_RESET_REQUESTED, &pf->state)) {
5420                 clear_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
5421                 i40e_verify_eeprom(pf);
5422         }
5423
5424         ret = i40e_get_capabilities(pf);
5425         if (ret) {
5426                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
5427                          ret);
5428                 goto end_core_reset;
5429         }
5430
5431         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
5432                                 hw->func_caps.num_rx_qp,
5433                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
5434         if (ret) {
5435                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
5436                 goto end_core_reset;
5437         }
5438         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
5439         if (ret) {
5440                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
5441                 goto end_core_reset;
5442         }
5443
5444 #ifdef CONFIG_I40E_DCB
5445         ret = i40e_init_pf_dcb(pf);
5446         if (ret) {
5447                 dev_info(&pf->pdev->dev, "init_pf_dcb failed: %d\n", ret);
5448                 goto end_core_reset;
5449         }
5450 #endif /* CONFIG_I40E_DCB */
5451
5452         /* do basic switch setup */
5453         ret = i40e_setup_pf_switch(pf, reinit);
5454         if (ret)
5455                 goto end_core_reset;
5456
5457         /* Rebuild the VSIs and VEBs that existed before reset.
5458          * They are still in our local switch element arrays, so only
5459          * need to rebuild the switch model in the HW.
5460          *
5461          * If there were VEBs but the reconstitution failed, we'll try
5462          * try to recover minimal use by getting the basic PF VSI working.
5463          */
5464         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
5465                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
5466                 /* find the one VEB connected to the MAC, and find orphans */
5467                 for (v = 0; v < I40E_MAX_VEB; v++) {
5468                         if (!pf->veb[v])
5469                                 continue;
5470
5471                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
5472                             pf->veb[v]->uplink_seid == 0) {
5473                                 ret = i40e_reconstitute_veb(pf->veb[v]);
5474
5475                                 if (!ret)
5476                                         continue;
5477
5478                                 /* If Main VEB failed, we're in deep doodoo,
5479                                  * so give up rebuilding the switch and set up
5480                                  * for minimal rebuild of PF VSI.
5481                                  * If orphan failed, we'll report the error
5482                                  * but try to keep going.
5483                                  */
5484                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
5485                                         dev_info(&pf->pdev->dev,
5486                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
5487                                                  ret);
5488                                         pf->vsi[pf->lan_vsi]->uplink_seid
5489                                                                 = pf->mac_seid;
5490                                         break;
5491                                 } else if (pf->veb[v]->uplink_seid == 0) {
5492                                         dev_info(&pf->pdev->dev,
5493                                                  "rebuild of orphan VEB failed: %d\n",
5494                                                  ret);
5495                                 }
5496                         }
5497                 }
5498         }
5499
5500         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
5501                 dev_info(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
5502                 /* no VEB, so rebuild only the Main VSI */
5503                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
5504                 if (ret) {
5505                         dev_info(&pf->pdev->dev,
5506                                  "rebuild of Main VSI failed: %d\n", ret);
5507                         goto end_core_reset;
5508                 }
5509         }
5510
5511         /* reinit the misc interrupt */
5512         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5513                 ret = i40e_setup_misc_vector(pf);
5514
5515         /* restart the VSIs that were rebuilt and running before the reset */
5516         i40e_pf_unquiesce_all_vsi(pf);
5517
5518         if (pf->num_alloc_vfs) {
5519                 for (v = 0; v < pf->num_alloc_vfs; v++)
5520                         i40e_reset_vf(&pf->vf[v], true);
5521         }
5522
5523         /* tell the firmware that we're starting */
5524         dv.major_version = DRV_VERSION_MAJOR;
5525         dv.minor_version = DRV_VERSION_MINOR;
5526         dv.build_version = DRV_VERSION_BUILD;
5527         dv.subbuild_version = 0;
5528         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
5529
5530         dev_info(&pf->pdev->dev, "reset complete\n");
5531
5532 end_core_reset:
5533         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
5534 }
5535
5536 /**
5537  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
5538  * @pf: board private structure
5539  *
5540  * Close up the VFs and other things in prep for a Core Reset,
5541  * then get ready to rebuild the world.
5542  **/
5543 static void i40e_handle_reset_warning(struct i40e_pf *pf)
5544 {
5545         i40e_status ret;
5546
5547         ret = i40e_prep_for_reset(pf);
5548         if (!ret)
5549                 i40e_reset_and_rebuild(pf, false);
5550 }
5551
5552 /**
5553  * i40e_handle_mdd_event
5554  * @pf: pointer to the pf structure
5555  *
5556  * Called from the MDD irq handler to identify possibly malicious vfs
5557  **/
5558 static void i40e_handle_mdd_event(struct i40e_pf *pf)
5559 {
5560         struct i40e_hw *hw = &pf->hw;
5561         bool mdd_detected = false;
5562         struct i40e_vf *vf;
5563         u32 reg;
5564         int i;
5565
5566         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
5567                 return;
5568
5569         /* find what triggered the MDD event */
5570         reg = rd32(hw, I40E_GL_MDET_TX);
5571         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
5572                 u8 func = (reg & I40E_GL_MDET_TX_FUNCTION_MASK)
5573                                 >> I40E_GL_MDET_TX_FUNCTION_SHIFT;
5574                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_SHIFT)
5575                                 >> I40E_GL_MDET_TX_EVENT_SHIFT;
5576                 u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK)
5577                                 >> I40E_GL_MDET_TX_QUEUE_SHIFT;
5578                 dev_info(&pf->pdev->dev,
5579                          "Malicious Driver Detection event 0x%02x on TX queue %d of function 0x%02x\n",
5580                          event, queue, func);
5581                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
5582                 mdd_detected = true;
5583         }
5584         reg = rd32(hw, I40E_GL_MDET_RX);
5585         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
5586                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK)
5587                                 >> I40E_GL_MDET_RX_FUNCTION_SHIFT;
5588                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_SHIFT)
5589                                 >> I40E_GL_MDET_RX_EVENT_SHIFT;
5590                 u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK)
5591                                 >> I40E_GL_MDET_RX_QUEUE_SHIFT;
5592                 dev_info(&pf->pdev->dev,
5593                          "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
5594                          event, queue, func);
5595                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
5596                 mdd_detected = true;
5597         }
5598
5599         /* see if one of the VFs needs its hand slapped */
5600         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
5601                 vf = &(pf->vf[i]);
5602                 reg = rd32(hw, I40E_VP_MDET_TX(i));
5603                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
5604                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
5605                         vf->num_mdd_events++;
5606                         dev_info(&pf->pdev->dev, "MDD TX event on VF %d\n", i);
5607                 }
5608
5609                 reg = rd32(hw, I40E_VP_MDET_RX(i));
5610                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
5611                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
5612                         vf->num_mdd_events++;
5613                         dev_info(&pf->pdev->dev, "MDD RX event on VF %d\n", i);
5614                 }
5615
5616                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
5617                         dev_info(&pf->pdev->dev,
5618                                  "Too many MDD events on VF %d, disabled\n", i);
5619                         dev_info(&pf->pdev->dev,
5620                                  "Use PF Control I/F to re-enable the VF\n");
5621                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
5622                 }
5623         }
5624
5625         /* re-enable mdd interrupt cause */
5626         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
5627         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
5628         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
5629         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
5630         i40e_flush(hw);
5631 }
5632
5633 #ifdef CONFIG_I40E_VXLAN
5634 /**
5635  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
5636  * @pf: board private structure
5637  **/
5638 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
5639 {
5640         const int vxlan_hdr_qwords = 4;
5641         struct i40e_hw *hw = &pf->hw;
5642         i40e_status ret;
5643         u8 filter_index;
5644         __be16 port;
5645         int i;
5646
5647         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
5648                 return;
5649
5650         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
5651
5652         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
5653                 if (pf->pending_vxlan_bitmap & (1 << i)) {
5654                         pf->pending_vxlan_bitmap &= ~(1 << i);
5655                         port = pf->vxlan_ports[i];
5656                         ret = port ?
5657                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
5658                                                      vxlan_hdr_qwords,
5659                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
5660                                                      &filter_index, NULL)
5661                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
5662
5663                         if (ret) {
5664                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
5665                                          port ? "adding" : "deleting",
5666                                          ntohs(port), port ? i : i);
5667
5668                                 pf->vxlan_ports[i] = 0;
5669                         } else {
5670                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
5671                                          port ? "Added" : "Deleted",
5672                                          ntohs(port), port ? i : filter_index);
5673                         }
5674                 }
5675         }
5676 }
5677
5678 #endif
5679 /**
5680  * i40e_service_task - Run the driver's async subtasks
5681  * @work: pointer to work_struct containing our data
5682  **/
5683 static void i40e_service_task(struct work_struct *work)
5684 {
5685         struct i40e_pf *pf = container_of(work,
5686                                           struct i40e_pf,
5687                                           service_task);
5688         unsigned long start_time = jiffies;
5689
5690         i40e_reset_subtask(pf);
5691         i40e_handle_mdd_event(pf);
5692         i40e_vc_process_vflr_event(pf);
5693         i40e_watchdog_subtask(pf);
5694         i40e_fdir_reinit_subtask(pf);
5695         i40e_check_hang_subtask(pf);
5696         i40e_sync_filters_subtask(pf);
5697 #ifdef CONFIG_I40E_VXLAN
5698         i40e_sync_vxlan_filters_subtask(pf);
5699 #endif
5700         i40e_clean_adminq_subtask(pf);
5701
5702         i40e_service_event_complete(pf);
5703
5704         /* If the tasks have taken longer than one timer cycle or there
5705          * is more work to be done, reschedule the service task now
5706          * rather than wait for the timer to tick again.
5707          */
5708         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
5709             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
5710             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
5711             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
5712                 i40e_service_event_schedule(pf);
5713 }
5714
5715 /**
5716  * i40e_service_timer - timer callback
5717  * @data: pointer to PF struct
5718  **/
5719 static void i40e_service_timer(unsigned long data)
5720 {
5721         struct i40e_pf *pf = (struct i40e_pf *)data;
5722
5723         mod_timer(&pf->service_timer,
5724                   round_jiffies(jiffies + pf->service_timer_period));
5725         i40e_service_event_schedule(pf);
5726 }
5727
5728 /**
5729  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
5730  * @vsi: the VSI being configured
5731  **/
5732 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
5733 {
5734         struct i40e_pf *pf = vsi->back;
5735
5736         switch (vsi->type) {
5737         case I40E_VSI_MAIN:
5738                 vsi->alloc_queue_pairs = pf->num_lan_qps;
5739                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5740                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5741                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5742                         vsi->num_q_vectors = pf->num_lan_msix;
5743                 else
5744                         vsi->num_q_vectors = 1;
5745
5746                 break;
5747
5748         case I40E_VSI_FDIR:
5749                 vsi->alloc_queue_pairs = 1;
5750                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
5751                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5752                 vsi->num_q_vectors = 1;
5753                 break;
5754
5755         case I40E_VSI_VMDQ2:
5756                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
5757                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5758                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5759                 vsi->num_q_vectors = pf->num_vmdq_msix;
5760                 break;
5761
5762         case I40E_VSI_SRIOV:
5763                 vsi->alloc_queue_pairs = pf->num_vf_qps;
5764                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5765                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5766                 break;
5767
5768         default:
5769                 WARN_ON(1);
5770                 return -ENODATA;
5771         }
5772
5773         return 0;
5774 }
5775
5776 /**
5777  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
5778  * @type: VSI pointer
5779  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
5780  *
5781  * On error: returns error code (negative)
5782  * On success: returns 0
5783  **/
5784 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
5785 {
5786         int size;
5787         int ret = 0;
5788
5789         /* allocate memory for both Tx and Rx ring pointers */
5790         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
5791         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
5792         if (!vsi->tx_rings)
5793                 return -ENOMEM;
5794         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
5795
5796         if (alloc_qvectors) {
5797                 /* allocate memory for q_vector pointers */
5798                 size = sizeof(struct i40e_q_vectors *) * vsi->num_q_vectors;
5799                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
5800                 if (!vsi->q_vectors) {
5801                         ret = -ENOMEM;
5802                         goto err_vectors;
5803                 }
5804         }
5805         return ret;
5806
5807 err_vectors:
5808         kfree(vsi->tx_rings);
5809         return ret;
5810 }
5811
5812 /**
5813  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
5814  * @pf: board private structure
5815  * @type: type of VSI
5816  *
5817  * On error: returns error code (negative)
5818  * On success: returns vsi index in PF (positive)
5819  **/
5820 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
5821 {
5822         int ret = -ENODEV;
5823         struct i40e_vsi *vsi;
5824         int vsi_idx;
5825         int i;
5826
5827         /* Need to protect the allocation of the VSIs at the PF level */
5828         mutex_lock(&pf->switch_mutex);
5829
5830         /* VSI list may be fragmented if VSI creation/destruction has
5831          * been happening.  We can afford to do a quick scan to look
5832          * for any free VSIs in the list.
5833          *
5834          * find next empty vsi slot, looping back around if necessary
5835          */
5836         i = pf->next_vsi;
5837         while (i < pf->hw.func_caps.num_vsis && pf->vsi[i])
5838                 i++;
5839         if (i >= pf->hw.func_caps.num_vsis) {
5840                 i = 0;
5841                 while (i < pf->next_vsi && pf->vsi[i])
5842                         i++;
5843         }
5844
5845         if (i < pf->hw.func_caps.num_vsis && !pf->vsi[i]) {
5846                 vsi_idx = i;             /* Found one! */
5847         } else {
5848                 ret = -ENODEV;
5849                 goto unlock_pf;  /* out of VSI slots! */
5850         }
5851         pf->next_vsi = ++i;
5852
5853         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
5854         if (!vsi) {
5855                 ret = -ENOMEM;
5856                 goto unlock_pf;
5857         }
5858         vsi->type = type;
5859         vsi->back = pf;
5860         set_bit(__I40E_DOWN, &vsi->state);
5861         vsi->flags = 0;
5862         vsi->idx = vsi_idx;
5863         vsi->rx_itr_setting = pf->rx_itr_default;
5864         vsi->tx_itr_setting = pf->tx_itr_default;
5865         vsi->netdev_registered = false;
5866         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
5867         INIT_LIST_HEAD(&vsi->mac_filter_list);
5868
5869         ret = i40e_set_num_rings_in_vsi(vsi);
5870         if (ret)
5871                 goto err_rings;
5872
5873         ret = i40e_vsi_alloc_arrays(vsi, true);
5874         if (ret)
5875                 goto err_rings;
5876
5877         /* Setup default MSIX irq handler for VSI */
5878         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
5879
5880         pf->vsi[vsi_idx] = vsi;
5881         ret = vsi_idx;
5882         goto unlock_pf;
5883
5884 err_rings:
5885         pf->next_vsi = i - 1;
5886         kfree(vsi);
5887 unlock_pf:
5888         mutex_unlock(&pf->switch_mutex);
5889         return ret;
5890 }
5891
5892 /**
5893  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
5894  * @type: VSI pointer
5895  * @free_qvectors: a bool to specify if q_vectors need to be freed.
5896  *
5897  * On error: returns error code (negative)
5898  * On success: returns 0
5899  **/
5900 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
5901 {
5902         /* free the ring and vector containers */
5903         if (free_qvectors) {
5904                 kfree(vsi->q_vectors);
5905                 vsi->q_vectors = NULL;
5906         }
5907         kfree(vsi->tx_rings);
5908         vsi->tx_rings = NULL;
5909         vsi->rx_rings = NULL;
5910 }
5911
5912 /**
5913  * i40e_vsi_clear - Deallocate the VSI provided
5914  * @vsi: the VSI being un-configured
5915  **/
5916 static int i40e_vsi_clear(struct i40e_vsi *vsi)
5917 {
5918         struct i40e_pf *pf;
5919
5920         if (!vsi)
5921                 return 0;
5922
5923         if (!vsi->back)
5924                 goto free_vsi;
5925         pf = vsi->back;
5926
5927         mutex_lock(&pf->switch_mutex);
5928         if (!pf->vsi[vsi->idx]) {
5929                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
5930                         vsi->idx, vsi->idx, vsi, vsi->type);
5931                 goto unlock_vsi;
5932         }
5933
5934         if (pf->vsi[vsi->idx] != vsi) {
5935                 dev_err(&pf->pdev->dev,
5936                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
5937                         pf->vsi[vsi->idx]->idx,
5938                         pf->vsi[vsi->idx],
5939                         pf->vsi[vsi->idx]->type,
5940                         vsi->idx, vsi, vsi->type);
5941                 goto unlock_vsi;
5942         }
5943
5944         /* updates the pf for this cleared vsi */
5945         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
5946         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
5947
5948         i40e_vsi_free_arrays(vsi, true);
5949
5950         pf->vsi[vsi->idx] = NULL;
5951         if (vsi->idx < pf->next_vsi)
5952                 pf->next_vsi = vsi->idx;
5953
5954 unlock_vsi:
5955         mutex_unlock(&pf->switch_mutex);
5956 free_vsi:
5957         kfree(vsi);
5958
5959         return 0;
5960 }
5961
5962 /**
5963  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
5964  * @vsi: the VSI being cleaned
5965  **/
5966 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
5967 {
5968         int i;
5969
5970         if (vsi->tx_rings && vsi->tx_rings[0]) {
5971                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
5972                         kfree_rcu(vsi->tx_rings[i], rcu);
5973                         vsi->tx_rings[i] = NULL;
5974                         vsi->rx_rings[i] = NULL;
5975                 }
5976         }
5977 }
5978
5979 /**
5980  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
5981  * @vsi: the VSI being configured
5982  **/
5983 static int i40e_alloc_rings(struct i40e_vsi *vsi)
5984 {
5985         struct i40e_pf *pf = vsi->back;
5986         int i;
5987
5988         /* Set basic values in the rings to be used later during open() */
5989         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
5990                 struct i40e_ring *tx_ring;
5991                 struct i40e_ring *rx_ring;
5992
5993                 /* allocate space for both Tx and Rx in one shot */
5994                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
5995                 if (!tx_ring)
5996                         goto err_out;
5997
5998                 tx_ring->queue_index = i;
5999                 tx_ring->reg_idx = vsi->base_queue + i;
6000                 tx_ring->ring_active = false;
6001                 tx_ring->vsi = vsi;
6002                 tx_ring->netdev = vsi->netdev;
6003                 tx_ring->dev = &pf->pdev->dev;
6004                 tx_ring->count = vsi->num_desc;
6005                 tx_ring->size = 0;
6006                 tx_ring->dcb_tc = 0;
6007                 vsi->tx_rings[i] = tx_ring;
6008
6009                 rx_ring = &tx_ring[1];
6010                 rx_ring->queue_index = i;
6011                 rx_ring->reg_idx = vsi->base_queue + i;
6012                 rx_ring->ring_active = false;
6013                 rx_ring->vsi = vsi;
6014                 rx_ring->netdev = vsi->netdev;
6015                 rx_ring->dev = &pf->pdev->dev;
6016                 rx_ring->count = vsi->num_desc;
6017                 rx_ring->size = 0;
6018                 rx_ring->dcb_tc = 0;
6019                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6020                         set_ring_16byte_desc_enabled(rx_ring);
6021                 else
6022                         clear_ring_16byte_desc_enabled(rx_ring);
6023                 vsi->rx_rings[i] = rx_ring;
6024         }
6025
6026         return 0;
6027
6028 err_out:
6029         i40e_vsi_clear_rings(vsi);
6030         return -ENOMEM;
6031 }
6032
6033 /**
6034  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6035  * @pf: board private structure
6036  * @vectors: the number of MSI-X vectors to request
6037  *
6038  * Returns the number of vectors reserved, or error
6039  **/
6040 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6041 {
6042         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6043                                         I40E_MIN_MSIX, vectors);
6044         if (vectors < 0) {
6045                 dev_info(&pf->pdev->dev,
6046                          "MSI-X vector reservation failed: %d\n", vectors);
6047                 vectors = 0;
6048         }
6049
6050         pf->num_msix_entries = vectors;
6051
6052         return vectors;
6053 }
6054
6055 /**
6056  * i40e_init_msix - Setup the MSIX capability
6057  * @pf: board private structure
6058  *
6059  * Work with the OS to set up the MSIX vectors needed.
6060  *
6061  * Returns 0 on success, negative on failure
6062  **/
6063 static int i40e_init_msix(struct i40e_pf *pf)
6064 {
6065         i40e_status err = 0;
6066         struct i40e_hw *hw = &pf->hw;
6067         int v_budget, i;
6068         int vec;
6069
6070         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6071                 return -ENODEV;
6072
6073         /* The number of vectors we'll request will be comprised of:
6074          *   - Add 1 for "other" cause for Admin Queue events, etc.
6075          *   - The number of LAN queue pairs
6076          *      - Queues being used for RSS.
6077          *              We don't need as many as max_rss_size vectors.
6078          *              use rss_size instead in the calculation since that
6079          *              is governed by number of cpus in the system.
6080          *      - assumes symmetric Tx/Rx pairing
6081          *   - The number of VMDq pairs
6082          * Once we count this up, try the request.
6083          *
6084          * If we can't get what we want, we'll simplify to nearly nothing
6085          * and try again.  If that still fails, we punt.
6086          */
6087         pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
6088         pf->num_vmdq_msix = pf->num_vmdq_qps;
6089         v_budget = 1 + pf->num_lan_msix;
6090         v_budget += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6091         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6092                 v_budget++;
6093
6094         /* Scale down if necessary, and the rings will share vectors */
6095         v_budget = min_t(int, v_budget, hw->func_caps.num_msix_vectors);
6096
6097         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6098                                    GFP_KERNEL);
6099         if (!pf->msix_entries)
6100                 return -ENOMEM;
6101
6102         for (i = 0; i < v_budget; i++)
6103                 pf->msix_entries[i].entry = i;
6104         vec = i40e_reserve_msix_vectors(pf, v_budget);
6105         if (vec < I40E_MIN_MSIX) {
6106                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6107                 kfree(pf->msix_entries);
6108                 pf->msix_entries = NULL;
6109                 return -ENODEV;
6110
6111         } else if (vec == I40E_MIN_MSIX) {
6112                 /* Adjust for minimal MSIX use */
6113                 dev_info(&pf->pdev->dev, "Features disabled, not enough MSI-X vectors\n");
6114                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
6115                 pf->num_vmdq_vsis = 0;
6116                 pf->num_vmdq_qps = 0;
6117                 pf->num_vmdq_msix = 0;
6118                 pf->num_lan_qps = 1;
6119                 pf->num_lan_msix = 1;
6120
6121         } else if (vec != v_budget) {
6122                 /* Scale vector usage down */
6123                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
6124                 vec--;                    /* reserve the misc vector */
6125
6126                 /* partition out the remaining vectors */
6127                 switch (vec) {
6128                 case 2:
6129                         pf->num_vmdq_vsis = 1;
6130                         pf->num_lan_msix = 1;
6131                         break;
6132                 case 3:
6133                         pf->num_vmdq_vsis = 1;
6134                         pf->num_lan_msix = 2;
6135                         break;
6136                 default:
6137                         pf->num_lan_msix = min_t(int, (vec / 2),
6138                                                  pf->num_lan_qps);
6139                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
6140                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
6141                         break;
6142                 }
6143         }
6144
6145         return err;
6146 }
6147
6148 /**
6149  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
6150  * @vsi: the VSI being configured
6151  * @v_idx: index of the vector in the vsi struct
6152  *
6153  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
6154  **/
6155 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
6156 {
6157         struct i40e_q_vector *q_vector;
6158
6159         /* allocate q_vector */
6160         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
6161         if (!q_vector)
6162                 return -ENOMEM;
6163
6164         q_vector->vsi = vsi;
6165         q_vector->v_idx = v_idx;
6166         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
6167         if (vsi->netdev)
6168                 netif_napi_add(vsi->netdev, &q_vector->napi,
6169                                i40e_napi_poll, vsi->work_limit);
6170
6171         q_vector->rx.latency_range = I40E_LOW_LATENCY;
6172         q_vector->tx.latency_range = I40E_LOW_LATENCY;
6173
6174         /* tie q_vector and vsi together */
6175         vsi->q_vectors[v_idx] = q_vector;
6176
6177         return 0;
6178 }
6179
6180 /**
6181  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
6182  * @vsi: the VSI being configured
6183  *
6184  * We allocate one q_vector per queue interrupt.  If allocation fails we
6185  * return -ENOMEM.
6186  **/
6187 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
6188 {
6189         struct i40e_pf *pf = vsi->back;
6190         int v_idx, num_q_vectors;
6191         int err;
6192
6193         /* if not MSIX, give the one vector only to the LAN VSI */
6194         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6195                 num_q_vectors = vsi->num_q_vectors;
6196         else if (vsi == pf->vsi[pf->lan_vsi])
6197                 num_q_vectors = 1;
6198         else
6199                 return -EINVAL;
6200
6201         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
6202                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
6203                 if (err)
6204                         goto err_out;
6205         }
6206
6207         return 0;
6208
6209 err_out:
6210         while (v_idx--)
6211                 i40e_free_q_vector(vsi, v_idx);
6212
6213         return err;
6214 }
6215
6216 /**
6217  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
6218  * @pf: board private structure to initialize
6219  **/
6220 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
6221 {
6222         int err = 0;
6223
6224         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
6225                 err = i40e_init_msix(pf);
6226                 if (err) {
6227                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
6228                                        I40E_FLAG_RSS_ENABLED    |
6229                                        I40E_FLAG_DCB_ENABLED    |
6230                                        I40E_FLAG_SRIOV_ENABLED  |
6231                                        I40E_FLAG_FD_SB_ENABLED  |
6232                                        I40E_FLAG_FD_ATR_ENABLED |
6233                                        I40E_FLAG_VMDQ_ENABLED);
6234
6235                         /* rework the queue expectations without MSIX */
6236                         i40e_determine_queue_usage(pf);
6237                 }
6238         }
6239
6240         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
6241             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
6242                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
6243                 err = pci_enable_msi(pf->pdev);
6244                 if (err) {
6245                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
6246                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
6247                 }
6248         }
6249
6250         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
6251                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
6252
6253         /* track first vector for misc interrupts */
6254         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
6255 }
6256
6257 /**
6258  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
6259  * @pf: board private structure
6260  *
6261  * This sets up the handler for MSIX 0, which is used to manage the
6262  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
6263  * when in MSI or Legacy interrupt mode.
6264  **/
6265 static int i40e_setup_misc_vector(struct i40e_pf *pf)
6266 {
6267         struct i40e_hw *hw = &pf->hw;
6268         int err = 0;
6269
6270         /* Only request the irq if this is the first time through, and
6271          * not when we're rebuilding after a Reset
6272          */
6273         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6274                 err = request_irq(pf->msix_entries[0].vector,
6275                                   i40e_intr, 0, pf->misc_int_name, pf);
6276                 if (err) {
6277                         dev_info(&pf->pdev->dev,
6278                                  "request_irq for %s failed: %d\n",
6279                                  pf->misc_int_name, err);
6280                         return -EFAULT;
6281                 }
6282         }
6283
6284         i40e_enable_misc_int_causes(hw);
6285
6286         /* associate no queues to the misc vector */
6287         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
6288         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
6289
6290         i40e_flush(hw);
6291
6292         i40e_irq_dynamic_enable_icr0(pf);
6293
6294         return err;
6295 }
6296
6297 /**
6298  * i40e_config_rss - Prepare for RSS if used
6299  * @pf: board private structure
6300  **/
6301 static int i40e_config_rss(struct i40e_pf *pf)
6302 {
6303         /* Set of random keys generated using kernel random number generator */
6304         static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
6305                                 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
6306                                 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
6307                                 0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
6308         struct i40e_hw *hw = &pf->hw;
6309         u32 lut = 0;
6310         int i, j;
6311         u64 hena;
6312
6313         /* Fill out hash function seed */
6314         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
6315                 wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
6316
6317         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
6318         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
6319                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
6320         hena |= I40E_DEFAULT_RSS_HENA;
6321         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
6322         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
6323
6324         /* Populate the LUT with max no. of queues in round robin fashion */
6325         for (i = 0, j = 0; i < pf->hw.func_caps.rss_table_size; i++, j++) {
6326
6327                 /* The assumption is that lan qp count will be the highest
6328                  * qp count for any PF VSI that needs RSS.
6329                  * If multiple VSIs need RSS support, all the qp counts
6330                  * for those VSIs should be a power of 2 for RSS to work.
6331                  * If LAN VSI is the only consumer for RSS then this requirement
6332                  * is not necessary.
6333                  */
6334                 if (j == pf->rss_size)
6335                         j = 0;
6336                 /* lut = 4-byte sliding window of 4 lut entries */
6337                 lut = (lut << 8) | (j &
6338                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
6339                 /* On i = 3, we have 4 entries in lut; write to the register */
6340                 if ((i & 3) == 3)
6341                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
6342         }
6343         i40e_flush(hw);
6344
6345         return 0;
6346 }
6347
6348 /**
6349  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
6350  * @pf: board private structure
6351  * @queue_count: the requested queue count for rss.
6352  *
6353  * returns 0 if rss is not enabled, if enabled returns the final rss queue
6354  * count which may be different from the requested queue count.
6355  **/
6356 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
6357 {
6358         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
6359                 return 0;
6360
6361         queue_count = min_t(int, queue_count, pf->rss_size_max);
6362         queue_count = rounddown_pow_of_two(queue_count);
6363
6364         if (queue_count != pf->rss_size) {
6365                 i40e_prep_for_reset(pf);
6366
6367                 pf->rss_size = queue_count;
6368
6369                 i40e_reset_and_rebuild(pf, true);
6370                 i40e_config_rss(pf);
6371         }
6372         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
6373         return pf->rss_size;
6374 }
6375
6376 /**
6377  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
6378  * @pf: board private structure to initialize
6379  *
6380  * i40e_sw_init initializes the Adapter private data structure.
6381  * Fields are initialized based on PCI device information and
6382  * OS network device settings (MTU size).
6383  **/
6384 static int i40e_sw_init(struct i40e_pf *pf)
6385 {
6386         int err = 0;
6387         int size;
6388
6389         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
6390                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
6391         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
6392         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
6393                 if (I40E_DEBUG_USER & debug)
6394                         pf->hw.debug_mask = debug;
6395                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
6396                                                 I40E_DEFAULT_MSG_ENABLE);
6397         }
6398
6399         /* Set default capability flags */
6400         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
6401                     I40E_FLAG_MSI_ENABLED     |
6402                     I40E_FLAG_MSIX_ENABLED    |
6403                     I40E_FLAG_RX_1BUF_ENABLED;
6404
6405         /* Depending on PF configurations, it is possible that the RSS
6406          * maximum might end up larger than the available queues
6407          */
6408         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
6409         pf->rss_size_max = min_t(int, pf->rss_size_max,
6410                                  pf->hw.func_caps.num_tx_qp);
6411         if (pf->hw.func_caps.rss) {
6412                 pf->flags |= I40E_FLAG_RSS_ENABLED;
6413                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
6414                 pf->rss_size = rounddown_pow_of_two(pf->rss_size);
6415         } else {
6416                 pf->rss_size = 1;
6417         }
6418
6419         /* MFP mode enabled */
6420         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
6421                 pf->flags |= I40E_FLAG_MFP_ENABLED;
6422                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
6423         }
6424
6425         /* FW/NVM is not yet fixed in this regard */
6426         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
6427             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
6428                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6429                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
6430                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
6431                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
6432                 } else {
6433                         dev_info(&pf->pdev->dev,
6434                                  "Flow Director Sideband mode Disabled in MFP mode\n");
6435                 }
6436                 pf->fdir_pf_filter_count =
6437                                  pf->hw.func_caps.fd_filters_guaranteed;
6438                 pf->hw.fdir_shared_filter_count =
6439                                  pf->hw.func_caps.fd_filters_best_effort;
6440         }
6441
6442         if (pf->hw.func_caps.vmdq) {
6443                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
6444                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
6445                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
6446         }
6447
6448 #ifdef CONFIG_PCI_IOV
6449         if (pf->hw.func_caps.num_vfs) {
6450                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
6451                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
6452                 pf->num_req_vfs = min_t(int,
6453                                         pf->hw.func_caps.num_vfs,
6454                                         I40E_MAX_VF_COUNT);
6455         }
6456 #endif /* CONFIG_PCI_IOV */
6457         pf->eeprom_version = 0xDEAD;
6458         pf->lan_veb = I40E_NO_VEB;
6459         pf->lan_vsi = I40E_NO_VSI;
6460
6461         /* set up queue assignment tracking */
6462         size = sizeof(struct i40e_lump_tracking)
6463                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
6464         pf->qp_pile = kzalloc(size, GFP_KERNEL);
6465         if (!pf->qp_pile) {
6466                 err = -ENOMEM;
6467                 goto sw_init_done;
6468         }
6469         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
6470         pf->qp_pile->search_hint = 0;
6471
6472         /* set up vector assignment tracking */
6473         size = sizeof(struct i40e_lump_tracking)
6474                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
6475         pf->irq_pile = kzalloc(size, GFP_KERNEL);
6476         if (!pf->irq_pile) {
6477                 kfree(pf->qp_pile);
6478                 err = -ENOMEM;
6479                 goto sw_init_done;
6480         }
6481         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
6482         pf->irq_pile->search_hint = 0;
6483
6484         mutex_init(&pf->switch_mutex);
6485
6486 sw_init_done:
6487         return err;
6488 }
6489
6490 /**
6491  * i40e_set_ntuple - set the ntuple feature flag and take action
6492  * @pf: board private structure to initialize
6493  * @features: the feature set that the stack is suggesting
6494  *
6495  * returns a bool to indicate if reset needs to happen
6496  **/
6497 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
6498 {
6499         bool need_reset = false;
6500
6501         /* Check if Flow Director n-tuple support was enabled or disabled.  If
6502          * the state changed, we need to reset.
6503          */
6504         if (features & NETIF_F_NTUPLE) {
6505                 /* Enable filters and mark for reset */
6506                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6507                         need_reset = true;
6508                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
6509         } else {
6510                 /* turn off filters, mark for reset and clear SW filter list */
6511                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
6512                         need_reset = true;
6513                         i40e_fdir_filter_exit(pf);
6514                 }
6515                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6516                 /* if ATR was disabled it can be re-enabled. */
6517                 if (!(pf->flags & I40E_FLAG_FD_ATR_ENABLED))
6518                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6519         }
6520         return need_reset;
6521 }
6522
6523 /**
6524  * i40e_set_features - set the netdev feature flags
6525  * @netdev: ptr to the netdev being adjusted
6526  * @features: the feature set that the stack is suggesting
6527  **/
6528 static int i40e_set_features(struct net_device *netdev,
6529                              netdev_features_t features)
6530 {
6531         struct i40e_netdev_priv *np = netdev_priv(netdev);
6532         struct i40e_vsi *vsi = np->vsi;
6533         struct i40e_pf *pf = vsi->back;
6534         bool need_reset;
6535
6536         if (features & NETIF_F_HW_VLAN_CTAG_RX)
6537                 i40e_vlan_stripping_enable(vsi);
6538         else
6539                 i40e_vlan_stripping_disable(vsi);
6540
6541         need_reset = i40e_set_ntuple(pf, features);
6542
6543         if (need_reset)
6544                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
6545
6546         return 0;
6547 }
6548
6549 #ifdef CONFIG_I40E_VXLAN
6550 /**
6551  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
6552  * @pf: board private structure
6553  * @port: The UDP port to look up
6554  *
6555  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
6556  **/
6557 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
6558 {
6559         u8 i;
6560
6561         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6562                 if (pf->vxlan_ports[i] == port)
6563                         return i;
6564         }
6565
6566         return i;
6567 }
6568
6569 /**
6570  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
6571  * @netdev: This physical port's netdev
6572  * @sa_family: Socket Family that VXLAN is notifying us about
6573  * @port: New UDP port number that VXLAN started listening to
6574  **/
6575 static void i40e_add_vxlan_port(struct net_device *netdev,
6576                                 sa_family_t sa_family, __be16 port)
6577 {
6578         struct i40e_netdev_priv *np = netdev_priv(netdev);
6579         struct i40e_vsi *vsi = np->vsi;
6580         struct i40e_pf *pf = vsi->back;
6581         u8 next_idx;
6582         u8 idx;
6583
6584         if (sa_family == AF_INET6)
6585                 return;
6586
6587         idx = i40e_get_vxlan_port_idx(pf, port);
6588
6589         /* Check if port already exists */
6590         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6591                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
6592                 return;
6593         }
6594
6595         /* Now check if there is space to add the new port */
6596         next_idx = i40e_get_vxlan_port_idx(pf, 0);
6597
6598         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6599                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
6600                             ntohs(port));
6601                 return;
6602         }
6603
6604         /* New port: add it and mark its index in the bitmap */
6605         pf->vxlan_ports[next_idx] = port;
6606         pf->pending_vxlan_bitmap |= (1 << next_idx);
6607
6608         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6609 }
6610
6611 /**
6612  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
6613  * @netdev: This physical port's netdev
6614  * @sa_family: Socket Family that VXLAN is notifying us about
6615  * @port: UDP port number that VXLAN stopped listening to
6616  **/
6617 static void i40e_del_vxlan_port(struct net_device *netdev,
6618                                 sa_family_t sa_family, __be16 port)
6619 {
6620         struct i40e_netdev_priv *np = netdev_priv(netdev);
6621         struct i40e_vsi *vsi = np->vsi;
6622         struct i40e_pf *pf = vsi->back;
6623         u8 idx;
6624
6625         if (sa_family == AF_INET6)
6626                 return;
6627
6628         idx = i40e_get_vxlan_port_idx(pf, port);
6629
6630         /* Check if port already exists */
6631         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6632                 /* if port exists, set it to 0 (mark for deletion)
6633                  * and make it pending
6634                  */
6635                 pf->vxlan_ports[idx] = 0;
6636
6637                 pf->pending_vxlan_bitmap |= (1 << idx);
6638
6639                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6640         } else {
6641                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
6642                             ntohs(port));
6643         }
6644 }
6645
6646 #endif
6647 static const struct net_device_ops i40e_netdev_ops = {
6648         .ndo_open               = i40e_open,
6649         .ndo_stop               = i40e_close,
6650         .ndo_start_xmit         = i40e_lan_xmit_frame,
6651         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
6652         .ndo_set_rx_mode        = i40e_set_rx_mode,
6653         .ndo_validate_addr      = eth_validate_addr,
6654         .ndo_set_mac_address    = i40e_set_mac,
6655         .ndo_change_mtu         = i40e_change_mtu,
6656         .ndo_do_ioctl           = i40e_ioctl,
6657         .ndo_tx_timeout         = i40e_tx_timeout,
6658         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
6659         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
6660 #ifdef CONFIG_NET_POLL_CONTROLLER
6661         .ndo_poll_controller    = i40e_netpoll,
6662 #endif
6663         .ndo_setup_tc           = i40e_setup_tc,
6664         .ndo_set_features       = i40e_set_features,
6665         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
6666         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
6667         .ndo_set_vf_tx_rate     = i40e_ndo_set_vf_bw,
6668         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
6669         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
6670 #ifdef CONFIG_I40E_VXLAN
6671         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
6672         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
6673 #endif
6674 };
6675
6676 /**
6677  * i40e_config_netdev - Setup the netdev flags
6678  * @vsi: the VSI being configured
6679  *
6680  * Returns 0 on success, negative value on failure
6681  **/
6682 static int i40e_config_netdev(struct i40e_vsi *vsi)
6683 {
6684         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
6685         struct i40e_pf *pf = vsi->back;
6686         struct i40e_hw *hw = &pf->hw;
6687         struct i40e_netdev_priv *np;
6688         struct net_device *netdev;
6689         u8 mac_addr[ETH_ALEN];
6690         int etherdev_size;
6691
6692         etherdev_size = sizeof(struct i40e_netdev_priv);
6693         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
6694         if (!netdev)
6695                 return -ENOMEM;
6696
6697         vsi->netdev = netdev;
6698         np = netdev_priv(netdev);
6699         np->vsi = vsi;
6700
6701         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
6702                                   NETIF_F_GSO_UDP_TUNNEL |
6703                                   NETIF_F_TSO;
6704
6705         netdev->features = NETIF_F_SG                  |
6706                            NETIF_F_IP_CSUM             |
6707                            NETIF_F_SCTP_CSUM           |
6708                            NETIF_F_HIGHDMA             |
6709                            NETIF_F_GSO_UDP_TUNNEL      |
6710                            NETIF_F_HW_VLAN_CTAG_TX     |
6711                            NETIF_F_HW_VLAN_CTAG_RX     |
6712                            NETIF_F_HW_VLAN_CTAG_FILTER |
6713                            NETIF_F_IPV6_CSUM           |
6714                            NETIF_F_TSO                 |
6715                            NETIF_F_TSO6                |
6716                            NETIF_F_RXCSUM              |
6717                            NETIF_F_NTUPLE              |
6718                            NETIF_F_RXHASH              |
6719                            0;
6720
6721         /* copy netdev features into list of user selectable features */
6722         netdev->hw_features |= netdev->features;
6723
6724         if (vsi->type == I40E_VSI_MAIN) {
6725                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
6726                 memcpy(mac_addr, hw->mac.perm_addr, ETH_ALEN);
6727         } else {
6728                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
6729                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
6730                          pf->vsi[pf->lan_vsi]->netdev->name);
6731                 random_ether_addr(mac_addr);
6732                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
6733         }
6734         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
6735
6736         memcpy(netdev->dev_addr, mac_addr, ETH_ALEN);
6737         memcpy(netdev->perm_addr, mac_addr, ETH_ALEN);
6738         /* vlan gets same features (except vlan offload)
6739          * after any tweaks for specific VSI types
6740          */
6741         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
6742                                                      NETIF_F_HW_VLAN_CTAG_RX |
6743                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
6744         netdev->priv_flags |= IFF_UNICAST_FLT;
6745         netdev->priv_flags |= IFF_SUPP_NOFCS;
6746         /* Setup netdev TC information */
6747         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
6748
6749         netdev->netdev_ops = &i40e_netdev_ops;
6750         netdev->watchdog_timeo = 5 * HZ;
6751         i40e_set_ethtool_ops(netdev);
6752
6753         return 0;
6754 }
6755
6756 /**
6757  * i40e_vsi_delete - Delete a VSI from the switch
6758  * @vsi: the VSI being removed
6759  *
6760  * Returns 0 on success, negative value on failure
6761  **/
6762 static void i40e_vsi_delete(struct i40e_vsi *vsi)
6763 {
6764         /* remove default VSI is not allowed */
6765         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
6766                 return;
6767
6768         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
6769         return;
6770 }
6771
6772 /**
6773  * i40e_add_vsi - Add a VSI to the switch
6774  * @vsi: the VSI being configured
6775  *
6776  * This initializes a VSI context depending on the VSI type to be added and
6777  * passes it down to the add_vsi aq command.
6778  **/
6779 static int i40e_add_vsi(struct i40e_vsi *vsi)
6780 {
6781         int ret = -ENODEV;
6782         struct i40e_mac_filter *f, *ftmp;
6783         struct i40e_pf *pf = vsi->back;
6784         struct i40e_hw *hw = &pf->hw;
6785         struct i40e_vsi_context ctxt;
6786         u8 enabled_tc = 0x1; /* TC0 enabled */
6787         int f_count = 0;
6788
6789         memset(&ctxt, 0, sizeof(ctxt));
6790         switch (vsi->type) {
6791         case I40E_VSI_MAIN:
6792                 /* The PF's main VSI is already setup as part of the
6793                  * device initialization, so we'll not bother with
6794                  * the add_vsi call, but we will retrieve the current
6795                  * VSI context.
6796                  */
6797                 ctxt.seid = pf->main_vsi_seid;
6798                 ctxt.pf_num = pf->hw.pf_id;
6799                 ctxt.vf_num = 0;
6800                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6801                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6802                 if (ret) {
6803                         dev_info(&pf->pdev->dev,
6804                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
6805                                  ret, pf->hw.aq.asq_last_status);
6806                         return -ENOENT;
6807                 }
6808                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
6809                 vsi->info.valid_sections = 0;
6810
6811                 vsi->seid = ctxt.seid;
6812                 vsi->id = ctxt.vsi_number;
6813
6814                 enabled_tc = i40e_pf_get_tc_map(pf);
6815
6816                 /* MFP mode setup queue map and update VSI */
6817                 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
6818                         memset(&ctxt, 0, sizeof(ctxt));
6819                         ctxt.seid = pf->main_vsi_seid;
6820                         ctxt.pf_num = pf->hw.pf_id;
6821                         ctxt.vf_num = 0;
6822                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
6823                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
6824                         if (ret) {
6825                                 dev_info(&pf->pdev->dev,
6826                                          "update vsi failed, aq_err=%d\n",
6827                                          pf->hw.aq.asq_last_status);
6828                                 ret = -ENOENT;
6829                                 goto err;
6830                         }
6831                         /* update the local VSI info queue map */
6832                         i40e_vsi_update_queue_map(vsi, &ctxt);
6833                         vsi->info.valid_sections = 0;
6834                 } else {
6835                         /* Default/Main VSI is only enabled for TC0
6836                          * reconfigure it to enable all TCs that are
6837                          * available on the port in SFP mode.
6838                          */
6839                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
6840                         if (ret) {
6841                                 dev_info(&pf->pdev->dev,
6842                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
6843                                          enabled_tc, ret,
6844                                          pf->hw.aq.asq_last_status);
6845                                 ret = -ENOENT;
6846                         }
6847                 }
6848                 break;
6849
6850         case I40E_VSI_FDIR:
6851                 ctxt.pf_num = hw->pf_id;
6852                 ctxt.vf_num = 0;
6853                 ctxt.uplink_seid = vsi->uplink_seid;
6854                 ctxt.connection_type = 0x1;     /* regular data port */
6855                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6856                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6857                 break;
6858
6859         case I40E_VSI_VMDQ2:
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_VMDQ2;
6865
6866                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6867
6868                 /* This VSI is connected to VEB so the switch_id
6869                  * should be set to zero by default.
6870                  */
6871                 ctxt.info.switch_id = 0;
6872                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
6873                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6874
6875                 /* Setup the VSI tx/rx queue map for TC0 only for now */
6876                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6877                 break;
6878
6879         case I40E_VSI_SRIOV:
6880                 ctxt.pf_num = hw->pf_id;
6881                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
6882                 ctxt.uplink_seid = vsi->uplink_seid;
6883                 ctxt.connection_type = 0x1;     /* regular data port */
6884                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
6885
6886                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6887
6888                 /* This VSI is connected to VEB so the switch_id
6889                  * should be set to zero by default.
6890                  */
6891                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6892
6893                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
6894                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
6895                 /* Setup the VSI tx/rx queue map for TC0 only for now */
6896                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
6897                 break;
6898
6899         default:
6900                 return -ENODEV;
6901         }
6902
6903         if (vsi->type != I40E_VSI_MAIN) {
6904                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
6905                 if (ret) {
6906                         dev_info(&vsi->back->pdev->dev,
6907                                  "add vsi failed, aq_err=%d\n",
6908                                  vsi->back->hw.aq.asq_last_status);
6909                         ret = -ENOENT;
6910                         goto err;
6911                 }
6912                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
6913                 vsi->info.valid_sections = 0;
6914                 vsi->seid = ctxt.seid;
6915                 vsi->id = ctxt.vsi_number;
6916         }
6917
6918         /* If macvlan filters already exist, force them to get loaded */
6919         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
6920                 f->changed = true;
6921                 f_count++;
6922         }
6923         if (f_count) {
6924                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
6925                 pf->flags |= I40E_FLAG_FILTER_SYNC;
6926         }
6927
6928         /* Update VSI BW information */
6929         ret = i40e_vsi_get_bw_info(vsi);
6930         if (ret) {
6931                 dev_info(&pf->pdev->dev,
6932                          "couldn't get vsi bw info, err %d, aq_err %d\n",
6933                          ret, pf->hw.aq.asq_last_status);
6934                 /* VSI is already added so not tearing that up */
6935                 ret = 0;
6936         }
6937
6938 err:
6939         return ret;
6940 }
6941
6942 /**
6943  * i40e_vsi_release - Delete a VSI and free its resources
6944  * @vsi: the VSI being removed
6945  *
6946  * Returns 0 on success or < 0 on error
6947  **/
6948 int i40e_vsi_release(struct i40e_vsi *vsi)
6949 {
6950         struct i40e_mac_filter *f, *ftmp;
6951         struct i40e_veb *veb = NULL;
6952         struct i40e_pf *pf;
6953         u16 uplink_seid;
6954         int i, n;
6955
6956         pf = vsi->back;
6957
6958         /* release of a VEB-owner or last VSI is not allowed */
6959         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
6960                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
6961                          vsi->seid, vsi->uplink_seid);
6962                 return -ENODEV;
6963         }
6964         if (vsi == pf->vsi[pf->lan_vsi] &&
6965             !test_bit(__I40E_DOWN, &pf->state)) {
6966                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
6967                 return -ENODEV;
6968         }
6969
6970         uplink_seid = vsi->uplink_seid;
6971         if (vsi->type != I40E_VSI_SRIOV) {
6972                 if (vsi->netdev_registered) {
6973                         vsi->netdev_registered = false;
6974                         if (vsi->netdev) {
6975                                 /* results in a call to i40e_close() */
6976                                 unregister_netdev(vsi->netdev);
6977                         }
6978                 } else {
6979                         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
6980                                 i40e_down(vsi);
6981                         i40e_vsi_free_irq(vsi);
6982                         i40e_vsi_free_tx_resources(vsi);
6983                         i40e_vsi_free_rx_resources(vsi);
6984                 }
6985                 i40e_vsi_disable_irq(vsi);
6986         }
6987
6988         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
6989                 i40e_del_filter(vsi, f->macaddr, f->vlan,
6990                                 f->is_vf, f->is_netdev);
6991         i40e_sync_vsi_filters(vsi);
6992
6993         i40e_vsi_delete(vsi);
6994         i40e_vsi_free_q_vectors(vsi);
6995         if (vsi->netdev) {
6996                 free_netdev(vsi->netdev);
6997                 vsi->netdev = NULL;
6998         }
6999         i40e_vsi_clear_rings(vsi);
7000         i40e_vsi_clear(vsi);
7001
7002         /* If this was the last thing on the VEB, except for the
7003          * controlling VSI, remove the VEB, which puts the controlling
7004          * VSI onto the next level down in the switch.
7005          *
7006          * Well, okay, there's one more exception here: don't remove
7007          * the orphan VEBs yet.  We'll wait for an explicit remove request
7008          * from up the network stack.
7009          */
7010         for (n = 0, i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7011                 if (pf->vsi[i] &&
7012                     pf->vsi[i]->uplink_seid == uplink_seid &&
7013                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7014                         n++;      /* count the VSIs */
7015                 }
7016         }
7017         for (i = 0; i < I40E_MAX_VEB; i++) {
7018                 if (!pf->veb[i])
7019                         continue;
7020                 if (pf->veb[i]->uplink_seid == uplink_seid)
7021                         n++;     /* count the VEBs */
7022                 if (pf->veb[i]->seid == uplink_seid)
7023                         veb = pf->veb[i];
7024         }
7025         if (n == 0 && veb && veb->uplink_seid != 0)
7026                 i40e_veb_release(veb);
7027
7028         return 0;
7029 }
7030
7031 /**
7032  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
7033  * @vsi: ptr to the VSI
7034  *
7035  * This should only be called after i40e_vsi_mem_alloc() which allocates the
7036  * corresponding SW VSI structure and initializes num_queue_pairs for the
7037  * newly allocated VSI.
7038  *
7039  * Returns 0 on success or negative on failure
7040  **/
7041 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
7042 {
7043         int ret = -ENOENT;
7044         struct i40e_pf *pf = vsi->back;
7045
7046         if (vsi->q_vectors[0]) {
7047                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
7048                          vsi->seid);
7049                 return -EEXIST;
7050         }
7051
7052         if (vsi->base_vector) {
7053                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
7054                          vsi->seid, vsi->base_vector);
7055                 return -EEXIST;
7056         }
7057
7058         ret = i40e_vsi_alloc_q_vectors(vsi);
7059         if (ret) {
7060                 dev_info(&pf->pdev->dev,
7061                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
7062                          vsi->num_q_vectors, vsi->seid, ret);
7063                 vsi->num_q_vectors = 0;
7064                 goto vector_setup_out;
7065         }
7066
7067         if (vsi->num_q_vectors)
7068                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
7069                                                  vsi->num_q_vectors, vsi->idx);
7070         if (vsi->base_vector < 0) {
7071                 dev_info(&pf->pdev->dev,
7072                          "failed to get queue tracking for VSI %d, err=%d\n",
7073                          vsi->seid, vsi->base_vector);
7074                 i40e_vsi_free_q_vectors(vsi);
7075                 ret = -ENOENT;
7076                 goto vector_setup_out;
7077         }
7078
7079 vector_setup_out:
7080         return ret;
7081 }
7082
7083 /**
7084  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
7085  * @vsi: pointer to the vsi.
7086  *
7087  * This re-allocates a vsi's queue resources.
7088  *
7089  * Returns pointer to the successfully allocated and configured VSI sw struct
7090  * on success, otherwise returns NULL on failure.
7091  **/
7092 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
7093 {
7094         struct i40e_pf *pf = vsi->back;
7095         u8 enabled_tc;
7096         int ret;
7097
7098         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7099         i40e_vsi_clear_rings(vsi);
7100
7101         i40e_vsi_free_arrays(vsi, false);
7102         i40e_set_num_rings_in_vsi(vsi);
7103         ret = i40e_vsi_alloc_arrays(vsi, false);
7104         if (ret)
7105                 goto err_vsi;
7106
7107         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
7108         if (ret < 0) {
7109                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7110                          vsi->seid, ret);
7111                 goto err_vsi;
7112         }
7113         vsi->base_queue = ret;
7114
7115         /* Update the FW view of the VSI. Force a reset of TC and queue
7116          * layout configurations.
7117          */
7118         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
7119         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
7120         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
7121         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
7122
7123         /* assign it some queues */
7124         ret = i40e_alloc_rings(vsi);
7125         if (ret)
7126                 goto err_rings;
7127
7128         /* map all of the rings to the q_vectors */
7129         i40e_vsi_map_rings_to_vectors(vsi);
7130         return vsi;
7131
7132 err_rings:
7133         i40e_vsi_free_q_vectors(vsi);
7134         if (vsi->netdev_registered) {
7135                 vsi->netdev_registered = false;
7136                 unregister_netdev(vsi->netdev);
7137                 free_netdev(vsi->netdev);
7138                 vsi->netdev = NULL;
7139         }
7140         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
7141 err_vsi:
7142         i40e_vsi_clear(vsi);
7143         return NULL;
7144 }
7145
7146 /**
7147  * i40e_vsi_setup - Set up a VSI by a given type
7148  * @pf: board private structure
7149  * @type: VSI type
7150  * @uplink_seid: the switch element to link to
7151  * @param1: usage depends upon VSI type. For VF types, indicates VF id
7152  *
7153  * This allocates the sw VSI structure and its queue resources, then add a VSI
7154  * to the identified VEB.
7155  *
7156  * Returns pointer to the successfully allocated and configure VSI sw struct on
7157  * success, otherwise returns NULL on failure.
7158  **/
7159 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
7160                                 u16 uplink_seid, u32 param1)
7161 {
7162         struct i40e_vsi *vsi = NULL;
7163         struct i40e_veb *veb = NULL;
7164         int ret, i;
7165         int v_idx;
7166
7167         /* The requested uplink_seid must be either
7168          *     - the PF's port seid
7169          *              no VEB is needed because this is the PF
7170          *              or this is a Flow Director special case VSI
7171          *     - seid of an existing VEB
7172          *     - seid of a VSI that owns an existing VEB
7173          *     - seid of a VSI that doesn't own a VEB
7174          *              a new VEB is created and the VSI becomes the owner
7175          *     - seid of the PF VSI, which is what creates the first VEB
7176          *              this is a special case of the previous
7177          *
7178          * Find which uplink_seid we were given and create a new VEB if needed
7179          */
7180         for (i = 0; i < I40E_MAX_VEB; i++) {
7181                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
7182                         veb = pf->veb[i];
7183                         break;
7184                 }
7185         }
7186
7187         if (!veb && uplink_seid != pf->mac_seid) {
7188
7189                 for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7190                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
7191                                 vsi = pf->vsi[i];
7192                                 break;
7193                         }
7194                 }
7195                 if (!vsi) {
7196                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
7197                                  uplink_seid);
7198                         return NULL;
7199                 }
7200
7201                 if (vsi->uplink_seid == pf->mac_seid)
7202                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
7203                                              vsi->tc_config.enabled_tc);
7204                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
7205                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
7206                                              vsi->tc_config.enabled_tc);
7207
7208                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7209                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7210                                 veb = pf->veb[i];
7211                 }
7212                 if (!veb) {
7213                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
7214                         return NULL;
7215                 }
7216
7217                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
7218                 uplink_seid = veb->seid;
7219         }
7220
7221         /* get vsi sw struct */
7222         v_idx = i40e_vsi_mem_alloc(pf, type);
7223         if (v_idx < 0)
7224                 goto err_alloc;
7225         vsi = pf->vsi[v_idx];
7226         if (!vsi)
7227                 goto err_alloc;
7228         vsi->type = type;
7229         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
7230
7231         if (type == I40E_VSI_MAIN)
7232                 pf->lan_vsi = v_idx;
7233         else if (type == I40E_VSI_SRIOV)
7234                 vsi->vf_id = param1;
7235         /* assign it some queues */
7236         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
7237                                 vsi->idx);
7238         if (ret < 0) {
7239                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7240                          vsi->seid, ret);
7241                 goto err_vsi;
7242         }
7243         vsi->base_queue = ret;
7244
7245         /* get a VSI from the hardware */
7246         vsi->uplink_seid = uplink_seid;
7247         ret = i40e_add_vsi(vsi);
7248         if (ret)
7249                 goto err_vsi;
7250
7251         switch (vsi->type) {
7252         /* setup the netdev if needed */
7253         case I40E_VSI_MAIN:
7254         case I40E_VSI_VMDQ2:
7255                 ret = i40e_config_netdev(vsi);
7256                 if (ret)
7257                         goto err_netdev;
7258                 ret = register_netdev(vsi->netdev);
7259                 if (ret)
7260                         goto err_netdev;
7261                 vsi->netdev_registered = true;
7262                 netif_carrier_off(vsi->netdev);
7263 #ifdef CONFIG_I40E_DCB
7264                 /* Setup DCB netlink interface */
7265                 i40e_dcbnl_setup(vsi);
7266 #endif /* CONFIG_I40E_DCB */
7267                 /* fall through */
7268
7269         case I40E_VSI_FDIR:
7270                 /* set up vectors and rings if needed */
7271                 ret = i40e_vsi_setup_vectors(vsi);
7272                 if (ret)
7273                         goto err_msix;
7274
7275                 ret = i40e_alloc_rings(vsi);
7276                 if (ret)
7277                         goto err_rings;
7278
7279                 /* map all of the rings to the q_vectors */
7280                 i40e_vsi_map_rings_to_vectors(vsi);
7281
7282                 i40e_vsi_reset_stats(vsi);
7283                 break;
7284
7285         default:
7286                 /* no netdev or rings for the other VSI types */
7287                 break;
7288         }
7289
7290         return vsi;
7291
7292 err_rings:
7293         i40e_vsi_free_q_vectors(vsi);
7294 err_msix:
7295         if (vsi->netdev_registered) {
7296                 vsi->netdev_registered = false;
7297                 unregister_netdev(vsi->netdev);
7298                 free_netdev(vsi->netdev);
7299                 vsi->netdev = NULL;
7300         }
7301 err_netdev:
7302         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
7303 err_vsi:
7304         i40e_vsi_clear(vsi);
7305 err_alloc:
7306         return NULL;
7307 }
7308
7309 /**
7310  * i40e_veb_get_bw_info - Query VEB BW information
7311  * @veb: the veb to query
7312  *
7313  * Query the Tx scheduler BW configuration data for given VEB
7314  **/
7315 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
7316 {
7317         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
7318         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
7319         struct i40e_pf *pf = veb->pf;
7320         struct i40e_hw *hw = &pf->hw;
7321         u32 tc_bw_max;
7322         int ret = 0;
7323         int i;
7324
7325         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
7326                                                   &bw_data, NULL);
7327         if (ret) {
7328                 dev_info(&pf->pdev->dev,
7329                          "query veb bw config failed, aq_err=%d\n",
7330                          hw->aq.asq_last_status);
7331                 goto out;
7332         }
7333
7334         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
7335                                                    &ets_data, NULL);
7336         if (ret) {
7337                 dev_info(&pf->pdev->dev,
7338                          "query veb bw ets config failed, aq_err=%d\n",
7339                          hw->aq.asq_last_status);
7340                 goto out;
7341         }
7342
7343         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
7344         veb->bw_max_quanta = ets_data.tc_bw_max;
7345         veb->is_abs_credits = bw_data.absolute_credits_enable;
7346         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
7347                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
7348         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
7349                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
7350                 veb->bw_tc_limit_credits[i] =
7351                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
7352                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
7353         }
7354
7355 out:
7356         return ret;
7357 }
7358
7359 /**
7360  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
7361  * @pf: board private structure
7362  *
7363  * On error: returns error code (negative)
7364  * On success: returns vsi index in PF (positive)
7365  **/
7366 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
7367 {
7368         int ret = -ENOENT;
7369         struct i40e_veb *veb;
7370         int i;
7371
7372         /* Need to protect the allocation of switch elements at the PF level */
7373         mutex_lock(&pf->switch_mutex);
7374
7375         /* VEB list may be fragmented if VEB creation/destruction has
7376          * been happening.  We can afford to do a quick scan to look
7377          * for any free slots in the list.
7378          *
7379          * find next empty veb slot, looping back around if necessary
7380          */
7381         i = 0;
7382         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
7383                 i++;
7384         if (i >= I40E_MAX_VEB) {
7385                 ret = -ENOMEM;
7386                 goto err_alloc_veb;  /* out of VEB slots! */
7387         }
7388
7389         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
7390         if (!veb) {
7391                 ret = -ENOMEM;
7392                 goto err_alloc_veb;
7393         }
7394         veb->pf = pf;
7395         veb->idx = i;
7396         veb->enabled_tc = 1;
7397
7398         pf->veb[i] = veb;
7399         ret = i;
7400 err_alloc_veb:
7401         mutex_unlock(&pf->switch_mutex);
7402         return ret;
7403 }
7404
7405 /**
7406  * i40e_switch_branch_release - Delete a branch of the switch tree
7407  * @branch: where to start deleting
7408  *
7409  * This uses recursion to find the tips of the branch to be
7410  * removed, deleting until we get back to and can delete this VEB.
7411  **/
7412 static void i40e_switch_branch_release(struct i40e_veb *branch)
7413 {
7414         struct i40e_pf *pf = branch->pf;
7415         u16 branch_seid = branch->seid;
7416         u16 veb_idx = branch->idx;
7417         int i;
7418
7419         /* release any VEBs on this VEB - RECURSION */
7420         for (i = 0; i < I40E_MAX_VEB; i++) {
7421                 if (!pf->veb[i])
7422                         continue;
7423                 if (pf->veb[i]->uplink_seid == branch->seid)
7424                         i40e_switch_branch_release(pf->veb[i]);
7425         }
7426
7427         /* Release the VSIs on this VEB, but not the owner VSI.
7428          *
7429          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
7430          *       the VEB itself, so don't use (*branch) after this loop.
7431          */
7432         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7433                 if (!pf->vsi[i])
7434                         continue;
7435                 if (pf->vsi[i]->uplink_seid == branch_seid &&
7436                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7437                         i40e_vsi_release(pf->vsi[i]);
7438                 }
7439         }
7440
7441         /* There's one corner case where the VEB might not have been
7442          * removed, so double check it here and remove it if needed.
7443          * This case happens if the veb was created from the debugfs
7444          * commands and no VSIs were added to it.
7445          */
7446         if (pf->veb[veb_idx])
7447                 i40e_veb_release(pf->veb[veb_idx]);
7448 }
7449
7450 /**
7451  * i40e_veb_clear - remove veb struct
7452  * @veb: the veb to remove
7453  **/
7454 static void i40e_veb_clear(struct i40e_veb *veb)
7455 {
7456         if (!veb)
7457                 return;
7458
7459         if (veb->pf) {
7460                 struct i40e_pf *pf = veb->pf;
7461
7462                 mutex_lock(&pf->switch_mutex);
7463                 if (pf->veb[veb->idx] == veb)
7464                         pf->veb[veb->idx] = NULL;
7465                 mutex_unlock(&pf->switch_mutex);
7466         }
7467
7468         kfree(veb);
7469 }
7470
7471 /**
7472  * i40e_veb_release - Delete a VEB and free its resources
7473  * @veb: the VEB being removed
7474  **/
7475 void i40e_veb_release(struct i40e_veb *veb)
7476 {
7477         struct i40e_vsi *vsi = NULL;
7478         struct i40e_pf *pf;
7479         int i, n = 0;
7480
7481         pf = veb->pf;
7482
7483         /* find the remaining VSI and check for extras */
7484         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7485                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
7486                         n++;
7487                         vsi = pf->vsi[i];
7488                 }
7489         }
7490         if (n != 1) {
7491                 dev_info(&pf->pdev->dev,
7492                          "can't remove VEB %d with %d VSIs left\n",
7493                          veb->seid, n);
7494                 return;
7495         }
7496
7497         /* move the remaining VSI to uplink veb */
7498         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
7499         if (veb->uplink_seid) {
7500                 vsi->uplink_seid = veb->uplink_seid;
7501                 if (veb->uplink_seid == pf->mac_seid)
7502                         vsi->veb_idx = I40E_NO_VEB;
7503                 else
7504                         vsi->veb_idx = veb->veb_idx;
7505         } else {
7506                 /* floating VEB */
7507                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
7508                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
7509         }
7510
7511         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
7512         i40e_veb_clear(veb);
7513
7514         return;
7515 }
7516
7517 /**
7518  * i40e_add_veb - create the VEB in the switch
7519  * @veb: the VEB to be instantiated
7520  * @vsi: the controlling VSI
7521  **/
7522 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
7523 {
7524         bool is_default = false;
7525         bool is_cloud = false;
7526         int ret;
7527
7528         /* get a VEB from the hardware */
7529         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
7530                               veb->enabled_tc, is_default,
7531                               is_cloud, &veb->seid, NULL);
7532         if (ret) {
7533                 dev_info(&veb->pf->pdev->dev,
7534                          "couldn't add VEB, err %d, aq_err %d\n",
7535                          ret, veb->pf->hw.aq.asq_last_status);
7536                 return -EPERM;
7537         }
7538
7539         /* get statistics counter */
7540         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
7541                                          &veb->stats_idx, NULL, NULL, NULL);
7542         if (ret) {
7543                 dev_info(&veb->pf->pdev->dev,
7544                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
7545                          ret, veb->pf->hw.aq.asq_last_status);
7546                 return -EPERM;
7547         }
7548         ret = i40e_veb_get_bw_info(veb);
7549         if (ret) {
7550                 dev_info(&veb->pf->pdev->dev,
7551                          "couldn't get VEB bw info, err %d, aq_err %d\n",
7552                          ret, veb->pf->hw.aq.asq_last_status);
7553                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
7554                 return -ENOENT;
7555         }
7556
7557         vsi->uplink_seid = veb->seid;
7558         vsi->veb_idx = veb->idx;
7559         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
7560
7561         return 0;
7562 }
7563
7564 /**
7565  * i40e_veb_setup - Set up a VEB
7566  * @pf: board private structure
7567  * @flags: VEB setup flags
7568  * @uplink_seid: the switch element to link to
7569  * @vsi_seid: the initial VSI seid
7570  * @enabled_tc: Enabled TC bit-map
7571  *
7572  * This allocates the sw VEB structure and links it into the switch
7573  * It is possible and legal for this to be a duplicate of an already
7574  * existing VEB.  It is also possible for both uplink and vsi seids
7575  * to be zero, in order to create a floating VEB.
7576  *
7577  * Returns pointer to the successfully allocated VEB sw struct on
7578  * success, otherwise returns NULL on failure.
7579  **/
7580 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
7581                                 u16 uplink_seid, u16 vsi_seid,
7582                                 u8 enabled_tc)
7583 {
7584         struct i40e_veb *veb, *uplink_veb = NULL;
7585         int vsi_idx, veb_idx;
7586         int ret;
7587
7588         /* if one seid is 0, the other must be 0 to create a floating relay */
7589         if ((uplink_seid == 0 || vsi_seid == 0) &&
7590             (uplink_seid + vsi_seid != 0)) {
7591                 dev_info(&pf->pdev->dev,
7592                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
7593                          uplink_seid, vsi_seid);
7594                 return NULL;
7595         }
7596
7597         /* make sure there is such a vsi and uplink */
7598         for (vsi_idx = 0; vsi_idx < pf->hw.func_caps.num_vsis; vsi_idx++)
7599                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
7600                         break;
7601         if (vsi_idx >= pf->hw.func_caps.num_vsis && vsi_seid != 0) {
7602                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
7603                          vsi_seid);
7604                 return NULL;
7605         }
7606
7607         if (uplink_seid && uplink_seid != pf->mac_seid) {
7608                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
7609                         if (pf->veb[veb_idx] &&
7610                             pf->veb[veb_idx]->seid == uplink_seid) {
7611                                 uplink_veb = pf->veb[veb_idx];
7612                                 break;
7613                         }
7614                 }
7615                 if (!uplink_veb) {
7616                         dev_info(&pf->pdev->dev,
7617                                  "uplink seid %d not found\n", uplink_seid);
7618                         return NULL;
7619                 }
7620         }
7621
7622         /* get veb sw struct */
7623         veb_idx = i40e_veb_mem_alloc(pf);
7624         if (veb_idx < 0)
7625                 goto err_alloc;
7626         veb = pf->veb[veb_idx];
7627         veb->flags = flags;
7628         veb->uplink_seid = uplink_seid;
7629         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
7630         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
7631
7632         /* create the VEB in the switch */
7633         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
7634         if (ret)
7635                 goto err_veb;
7636
7637         return veb;
7638
7639 err_veb:
7640         i40e_veb_clear(veb);
7641 err_alloc:
7642         return NULL;
7643 }
7644
7645 /**
7646  * i40e_setup_pf_switch_element - set pf vars based on switch type
7647  * @pf: board private structure
7648  * @ele: element we are building info from
7649  * @num_reported: total number of elements
7650  * @printconfig: should we print the contents
7651  *
7652  * helper function to assist in extracting a few useful SEID values.
7653  **/
7654 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
7655                                 struct i40e_aqc_switch_config_element_resp *ele,
7656                                 u16 num_reported, bool printconfig)
7657 {
7658         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
7659         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
7660         u8 element_type = ele->element_type;
7661         u16 seid = le16_to_cpu(ele->seid);
7662
7663         if (printconfig)
7664                 dev_info(&pf->pdev->dev,
7665                          "type=%d seid=%d uplink=%d downlink=%d\n",
7666                          element_type, seid, uplink_seid, downlink_seid);
7667
7668         switch (element_type) {
7669         case I40E_SWITCH_ELEMENT_TYPE_MAC:
7670                 pf->mac_seid = seid;
7671                 break;
7672         case I40E_SWITCH_ELEMENT_TYPE_VEB:
7673                 /* Main VEB? */
7674                 if (uplink_seid != pf->mac_seid)
7675                         break;
7676                 if (pf->lan_veb == I40E_NO_VEB) {
7677                         int v;
7678
7679                         /* find existing or else empty VEB */
7680                         for (v = 0; v < I40E_MAX_VEB; v++) {
7681                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
7682                                         pf->lan_veb = v;
7683                                         break;
7684                                 }
7685                         }
7686                         if (pf->lan_veb == I40E_NO_VEB) {
7687                                 v = i40e_veb_mem_alloc(pf);
7688                                 if (v < 0)
7689                                         break;
7690                                 pf->lan_veb = v;
7691                         }
7692                 }
7693
7694                 pf->veb[pf->lan_veb]->seid = seid;
7695                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
7696                 pf->veb[pf->lan_veb]->pf = pf;
7697                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
7698                 break;
7699         case I40E_SWITCH_ELEMENT_TYPE_VSI:
7700                 if (num_reported != 1)
7701                         break;
7702                 /* This is immediately after a reset so we can assume this is
7703                  * the PF's VSI
7704                  */
7705                 pf->mac_seid = uplink_seid;
7706                 pf->pf_seid = downlink_seid;
7707                 pf->main_vsi_seid = seid;
7708                 if (printconfig)
7709                         dev_info(&pf->pdev->dev,
7710                                  "pf_seid=%d main_vsi_seid=%d\n",
7711                                  pf->pf_seid, pf->main_vsi_seid);
7712                 break;
7713         case I40E_SWITCH_ELEMENT_TYPE_PF:
7714         case I40E_SWITCH_ELEMENT_TYPE_VF:
7715         case I40E_SWITCH_ELEMENT_TYPE_EMP:
7716         case I40E_SWITCH_ELEMENT_TYPE_BMC:
7717         case I40E_SWITCH_ELEMENT_TYPE_PE:
7718         case I40E_SWITCH_ELEMENT_TYPE_PA:
7719                 /* ignore these for now */
7720                 break;
7721         default:
7722                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
7723                          element_type, seid);
7724                 break;
7725         }
7726 }
7727
7728 /**
7729  * i40e_fetch_switch_configuration - Get switch config from firmware
7730  * @pf: board private structure
7731  * @printconfig: should we print the contents
7732  *
7733  * Get the current switch configuration from the device and
7734  * extract a few useful SEID values.
7735  **/
7736 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
7737 {
7738         struct i40e_aqc_get_switch_config_resp *sw_config;
7739         u16 next_seid = 0;
7740         int ret = 0;
7741         u8 *aq_buf;
7742         int i;
7743
7744         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
7745         if (!aq_buf)
7746                 return -ENOMEM;
7747
7748         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
7749         do {
7750                 u16 num_reported, num_total;
7751
7752                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
7753                                                 I40E_AQ_LARGE_BUF,
7754                                                 &next_seid, NULL);
7755                 if (ret) {
7756                         dev_info(&pf->pdev->dev,
7757                                  "get switch config failed %d aq_err=%x\n",
7758                                  ret, pf->hw.aq.asq_last_status);
7759                         kfree(aq_buf);
7760                         return -ENOENT;
7761                 }
7762
7763                 num_reported = le16_to_cpu(sw_config->header.num_reported);
7764                 num_total = le16_to_cpu(sw_config->header.num_total);
7765
7766                 if (printconfig)
7767                         dev_info(&pf->pdev->dev,
7768                                  "header: %d reported %d total\n",
7769                                  num_reported, num_total);
7770
7771                 if (num_reported) {
7772                         int sz = sizeof(*sw_config) * num_reported;
7773
7774                         kfree(pf->sw_config);
7775                         pf->sw_config = kzalloc(sz, GFP_KERNEL);
7776                         if (pf->sw_config)
7777                                 memcpy(pf->sw_config, sw_config, sz);
7778                 }
7779
7780                 for (i = 0; i < num_reported; i++) {
7781                         struct i40e_aqc_switch_config_element_resp *ele =
7782                                 &sw_config->element[i];
7783
7784                         i40e_setup_pf_switch_element(pf, ele, num_reported,
7785                                                      printconfig);
7786                 }
7787         } while (next_seid != 0);
7788
7789         kfree(aq_buf);
7790         return ret;
7791 }
7792
7793 /**
7794  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
7795  * @pf: board private structure
7796  * @reinit: if the Main VSI needs to re-initialized.
7797  *
7798  * Returns 0 on success, negative value on failure
7799  **/
7800 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
7801 {
7802         u32 rxfc = 0, txfc = 0, rxfc_reg;
7803         int ret;
7804
7805         /* find out what's out there already */
7806         ret = i40e_fetch_switch_configuration(pf, false);
7807         if (ret) {
7808                 dev_info(&pf->pdev->dev,
7809                          "couldn't fetch switch config, err %d, aq_err %d\n",
7810                          ret, pf->hw.aq.asq_last_status);
7811                 return ret;
7812         }
7813         i40e_pf_reset_stats(pf);
7814
7815         /* first time setup */
7816         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
7817                 struct i40e_vsi *vsi = NULL;
7818                 u16 uplink_seid;
7819
7820                 /* Set up the PF VSI associated with the PF's main VSI
7821                  * that is already in the HW switch
7822                  */
7823                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
7824                         uplink_seid = pf->veb[pf->lan_veb]->seid;
7825                 else
7826                         uplink_seid = pf->mac_seid;
7827                 if (pf->lan_vsi == I40E_NO_VSI)
7828                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
7829                 else if (reinit)
7830                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
7831                 if (!vsi) {
7832                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
7833                         i40e_fdir_teardown(pf);
7834                         return -EAGAIN;
7835                 }
7836         } else {
7837                 /* force a reset of TC and queue layout configurations */
7838                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
7839                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
7840                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
7841                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
7842         }
7843         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
7844
7845         i40e_fdir_sb_setup(pf);
7846
7847         /* Setup static PF queue filter control settings */
7848         ret = i40e_setup_pf_filter_control(pf);
7849         if (ret) {
7850                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
7851                          ret);
7852                 /* Failure here should not stop continuing other steps */
7853         }
7854
7855         /* enable RSS in the HW, even for only one queue, as the stack can use
7856          * the hash
7857          */
7858         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
7859                 i40e_config_rss(pf);
7860
7861         /* fill in link information and enable LSE reporting */
7862         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
7863         i40e_link_event(pf);
7864
7865         /* Initialize user-specific link properties */
7866         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
7867                                   I40E_AQ_AN_COMPLETED) ? true : false);
7868         /* requested_mode is set in probe or by ethtool */
7869         if (!pf->fc_autoneg_status)
7870                 goto no_autoneg;
7871
7872         if ((pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX) &&
7873             (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX))
7874                 pf->hw.fc.current_mode = I40E_FC_FULL;
7875         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX)
7876                 pf->hw.fc.current_mode = I40E_FC_TX_PAUSE;
7877         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX)
7878                 pf->hw.fc.current_mode = I40E_FC_RX_PAUSE;
7879         else
7880                 pf->hw.fc.current_mode = I40E_FC_NONE;
7881
7882         /* sync the flow control settings with the auto-neg values */
7883         switch (pf->hw.fc.current_mode) {
7884         case I40E_FC_FULL:
7885                 txfc = 1;
7886                 rxfc = 1;
7887                 break;
7888         case I40E_FC_TX_PAUSE:
7889                 txfc = 1;
7890                 rxfc = 0;
7891                 break;
7892         case I40E_FC_RX_PAUSE:
7893                 txfc = 0;
7894                 rxfc = 1;
7895                 break;
7896         case I40E_FC_NONE:
7897         case I40E_FC_DEFAULT:
7898                 txfc = 0;
7899                 rxfc = 0;
7900                 break;
7901         case I40E_FC_PFC:
7902                 /* TBD */
7903                 break;
7904         /* no default case, we have to handle all possibilities here */
7905         }
7906
7907         wr32(&pf->hw, I40E_PRTDCB_FCCFG, txfc << I40E_PRTDCB_FCCFG_TFCE_SHIFT);
7908
7909         rxfc_reg = rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
7910                    ~I40E_PRTDCB_MFLCN_RFCE_MASK;
7911         rxfc_reg |= (rxfc << I40E_PRTDCB_MFLCN_RFCE_SHIFT);
7912
7913         wr32(&pf->hw, I40E_PRTDCB_MFLCN, rxfc_reg);
7914
7915         goto fc_complete;
7916
7917 no_autoneg:
7918         /* disable L2 flow control, user can turn it on if they wish */
7919         wr32(&pf->hw, I40E_PRTDCB_FCCFG, 0);
7920         wr32(&pf->hw, I40E_PRTDCB_MFLCN, rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
7921                                          ~I40E_PRTDCB_MFLCN_RFCE_MASK);
7922
7923 fc_complete:
7924         i40e_ptp_init(pf);
7925
7926         return ret;
7927 }
7928
7929 /**
7930  * i40e_determine_queue_usage - Work out queue distribution
7931  * @pf: board private structure
7932  **/
7933 static void i40e_determine_queue_usage(struct i40e_pf *pf)
7934 {
7935         int queues_left;
7936
7937         pf->num_lan_qps = 0;
7938
7939         /* Find the max queues to be put into basic use.  We'll always be
7940          * using TC0, whether or not DCB is running, and TC0 will get the
7941          * big RSS set.
7942          */
7943         queues_left = pf->hw.func_caps.num_tx_qp;
7944
7945         if ((queues_left == 1) ||
7946             !(pf->flags & I40E_FLAG_MSIX_ENABLED) ||
7947             !(pf->flags & (I40E_FLAG_RSS_ENABLED | I40E_FLAG_FD_SB_ENABLED |
7948                            I40E_FLAG_DCB_ENABLED))) {
7949                 /* one qp for PF, no queues for anything else */
7950                 queues_left = 0;
7951                 pf->rss_size = pf->num_lan_qps = 1;
7952
7953                 /* make sure all the fancies are disabled */
7954                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
7955                                I40E_FLAG_FD_SB_ENABLED  |
7956                                I40E_FLAG_FD_ATR_ENABLED |
7957                                I40E_FLAG_DCB_ENABLED    |
7958                                I40E_FLAG_SRIOV_ENABLED  |
7959                                I40E_FLAG_VMDQ_ENABLED);
7960         } else {
7961                 /* Not enough queues for all TCs */
7962                 if ((pf->flags & I40E_FLAG_DCB_ENABLED) &&
7963                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
7964                         pf->flags &= ~I40E_FLAG_DCB_ENABLED;
7965                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
7966                 }
7967                 pf->num_lan_qps = pf->rss_size_max;
7968                 queues_left -= pf->num_lan_qps;
7969         }
7970
7971         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7972                 if (queues_left > 1) {
7973                         queues_left -= 1; /* save 1 queue for FD */
7974                 } else {
7975                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7976                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
7977                 }
7978         }
7979
7980         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
7981             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
7982                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
7983                                         (queues_left / pf->num_vf_qps));
7984                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
7985         }
7986
7987         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7988             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
7989                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
7990                                           (queues_left / pf->num_vmdq_qps));
7991                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
7992         }
7993
7994         pf->queues_left = queues_left;
7995         return;
7996 }
7997
7998 /**
7999  * i40e_setup_pf_filter_control - Setup PF static filter control
8000  * @pf: PF to be setup
8001  *
8002  * i40e_setup_pf_filter_control sets up a pf's initial filter control
8003  * settings. If PE/FCoE are enabled then it will also set the per PF
8004  * based filter sizes required for them. It also enables Flow director,
8005  * ethertype and macvlan type filter settings for the pf.
8006  *
8007  * Returns 0 on success, negative on failure
8008  **/
8009 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
8010 {
8011         struct i40e_filter_control_settings *settings = &pf->filter_settings;
8012
8013         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
8014
8015         /* Flow Director is enabled */
8016         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
8017                 settings->enable_fdir = true;
8018
8019         /* Ethtype and MACVLAN filters enabled for PF */
8020         settings->enable_ethtype = true;
8021         settings->enable_macvlan = true;
8022
8023         if (i40e_set_filter_control(&pf->hw, settings))
8024                 return -ENOENT;
8025
8026         return 0;
8027 }
8028
8029 #define INFO_STRING_LEN 255
8030 static void i40e_print_features(struct i40e_pf *pf)
8031 {
8032         struct i40e_hw *hw = &pf->hw;
8033         char *buf, *string;
8034
8035         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
8036         if (!string) {
8037                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
8038                 return;
8039         }
8040
8041         buf = string;
8042
8043         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
8044 #ifdef CONFIG_PCI_IOV
8045         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
8046 #endif
8047         buf += sprintf(buf, "VSIs: %d QP: %d ", pf->hw.func_caps.num_vsis,
8048                        pf->vsi[pf->lan_vsi]->num_queue_pairs);
8049
8050         if (pf->flags & I40E_FLAG_RSS_ENABLED)
8051                 buf += sprintf(buf, "RSS ");
8052         buf += sprintf(buf, "FDir ");
8053         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
8054                 buf += sprintf(buf, "ATR ");
8055         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
8056                 buf += sprintf(buf, "NTUPLE ");
8057         if (pf->flags & I40E_FLAG_DCB_ENABLED)
8058                 buf += sprintf(buf, "DCB ");
8059         if (pf->flags & I40E_FLAG_PTP)
8060                 buf += sprintf(buf, "PTP ");
8061
8062         BUG_ON(buf > (string + INFO_STRING_LEN));
8063         dev_info(&pf->pdev->dev, "%s\n", string);
8064         kfree(string);
8065 }
8066
8067 /**
8068  * i40e_probe - Device initialization routine
8069  * @pdev: PCI device information struct
8070  * @ent: entry in i40e_pci_tbl
8071  *
8072  * i40e_probe initializes a pf identified by a pci_dev structure.
8073  * The OS initialization, configuring of the pf private structure,
8074  * and a hardware reset occur.
8075  *
8076  * Returns 0 on success, negative on failure
8077  **/
8078 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8079 {
8080         struct i40e_driver_version dv;
8081         struct i40e_pf *pf;
8082         struct i40e_hw *hw;
8083         static u16 pfs_found;
8084         u16 link_status;
8085         int err = 0;
8086         u32 len;
8087
8088         err = pci_enable_device_mem(pdev);
8089         if (err)
8090                 return err;
8091
8092         /* set up for high or low dma */
8093         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
8094         if (err) {
8095                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
8096                 if (err) {
8097                         dev_err(&pdev->dev,
8098                                 "DMA configuration failed: 0x%x\n", err);
8099                         goto err_dma;
8100                 }
8101         }
8102
8103         /* set up pci connections */
8104         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
8105                                            IORESOURCE_MEM), i40e_driver_name);
8106         if (err) {
8107                 dev_info(&pdev->dev,
8108                          "pci_request_selected_regions failed %d\n", err);
8109                 goto err_pci_reg;
8110         }
8111
8112         pci_enable_pcie_error_reporting(pdev);
8113         pci_set_master(pdev);
8114
8115         /* Now that we have a PCI connection, we need to do the
8116          * low level device setup.  This is primarily setting up
8117          * the Admin Queue structures and then querying for the
8118          * device's current profile information.
8119          */
8120         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
8121         if (!pf) {
8122                 err = -ENOMEM;
8123                 goto err_pf_alloc;
8124         }
8125         pf->next_vsi = 0;
8126         pf->pdev = pdev;
8127         set_bit(__I40E_DOWN, &pf->state);
8128
8129         hw = &pf->hw;
8130         hw->back = pf;
8131         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
8132                               pci_resource_len(pdev, 0));
8133         if (!hw->hw_addr) {
8134                 err = -EIO;
8135                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
8136                          (unsigned int)pci_resource_start(pdev, 0),
8137                          (unsigned int)pci_resource_len(pdev, 0), err);
8138                 goto err_ioremap;
8139         }
8140         hw->vendor_id = pdev->vendor;
8141         hw->device_id = pdev->device;
8142         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
8143         hw->subsystem_vendor_id = pdev->subsystem_vendor;
8144         hw->subsystem_device_id = pdev->subsystem_device;
8145         hw->bus.device = PCI_SLOT(pdev->devfn);
8146         hw->bus.func = PCI_FUNC(pdev->devfn);
8147         pf->instance = pfs_found;
8148
8149         /* do a special CORER for clearing PXE mode once at init */
8150         if (hw->revision_id == 0 &&
8151             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
8152                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
8153                 i40e_flush(hw);
8154                 msleep(200);
8155                 pf->corer_count++;
8156
8157                 i40e_clear_pxe_mode(hw);
8158         }
8159
8160         /* Reset here to make sure all is clean and to define PF 'n' */
8161         err = i40e_pf_reset(hw);
8162         if (err) {
8163                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
8164                 goto err_pf_reset;
8165         }
8166         pf->pfr_count++;
8167
8168         hw->aq.num_arq_entries = I40E_AQ_LEN;
8169         hw->aq.num_asq_entries = I40E_AQ_LEN;
8170         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
8171         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
8172         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
8173         snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
8174                  "%s-pf%d:misc",
8175                  dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
8176
8177         err = i40e_init_shared_code(hw);
8178         if (err) {
8179                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
8180                 goto err_pf_reset;
8181         }
8182
8183         /* set up a default setting for link flow control */
8184         pf->hw.fc.requested_mode = I40E_FC_NONE;
8185
8186         err = i40e_init_adminq(hw);
8187         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
8188         if (err) {
8189                 dev_info(&pdev->dev,
8190                          "init_adminq failed: %d expecting API %02x.%02x\n",
8191                          err,
8192                          I40E_FW_API_VERSION_MAJOR, I40E_FW_API_VERSION_MINOR);
8193                 goto err_pf_reset;
8194         }
8195
8196         i40e_verify_eeprom(pf);
8197
8198         i40e_clear_pxe_mode(hw);
8199         err = i40e_get_capabilities(pf);
8200         if (err)
8201                 goto err_adminq_setup;
8202
8203         err = i40e_sw_init(pf);
8204         if (err) {
8205                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
8206                 goto err_sw_init;
8207         }
8208
8209         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
8210                                 hw->func_caps.num_rx_qp,
8211                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
8212         if (err) {
8213                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
8214                 goto err_init_lan_hmc;
8215         }
8216
8217         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
8218         if (err) {
8219                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
8220                 err = -ENOENT;
8221                 goto err_configure_lan_hmc;
8222         }
8223
8224         i40e_get_mac_addr(hw, hw->mac.addr);
8225         if (!is_valid_ether_addr(hw->mac.addr)) {
8226                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
8227                 err = -EIO;
8228                 goto err_mac_addr;
8229         }
8230         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
8231         memcpy(hw->mac.perm_addr, hw->mac.addr, ETH_ALEN);
8232
8233         pci_set_drvdata(pdev, pf);
8234         pci_save_state(pdev);
8235 #ifdef CONFIG_I40E_DCB
8236         err = i40e_init_pf_dcb(pf);
8237         if (err) {
8238                 dev_info(&pdev->dev, "init_pf_dcb failed: %d\n", err);
8239                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
8240                 goto err_init_dcb;
8241         }
8242 #endif /* CONFIG_I40E_DCB */
8243
8244         /* set up periodic task facility */
8245         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
8246         pf->service_timer_period = HZ;
8247
8248         INIT_WORK(&pf->service_task, i40e_service_task);
8249         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
8250         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
8251         pf->link_check_timeout = jiffies;
8252
8253         /* WoL defaults to disabled */
8254         pf->wol_en = false;
8255         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
8256
8257         /* set up the main switch operations */
8258         i40e_determine_queue_usage(pf);
8259         i40e_init_interrupt_scheme(pf);
8260
8261         /* Set up the *vsi struct based on the number of VSIs in the HW,
8262          * and set up our local tracking of the MAIN PF vsi.
8263          */
8264         len = sizeof(struct i40e_vsi *) * pf->hw.func_caps.num_vsis;
8265         pf->vsi = kzalloc(len, GFP_KERNEL);
8266         if (!pf->vsi) {
8267                 err = -ENOMEM;
8268                 goto err_switch_setup;
8269         }
8270
8271         err = i40e_setup_pf_switch(pf, false);
8272         if (err) {
8273                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
8274                 goto err_vsis;
8275         }
8276
8277         /* The main driver is (mostly) up and happy. We need to set this state
8278          * before setting up the misc vector or we get a race and the vector
8279          * ends up disabled forever.
8280          */
8281         clear_bit(__I40E_DOWN, &pf->state);
8282
8283         /* In case of MSIX we are going to setup the misc vector right here
8284          * to handle admin queue events etc. In case of legacy and MSI
8285          * the misc functionality and queue processing is combined in
8286          * the same vector and that gets setup at open.
8287          */
8288         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8289                 err = i40e_setup_misc_vector(pf);
8290                 if (err) {
8291                         dev_info(&pdev->dev,
8292                                  "setup of misc vector failed: %d\n", err);
8293                         goto err_vsis;
8294                 }
8295         }
8296
8297         /* prep for VF support */
8298         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8299             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
8300             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
8301                 u32 val;
8302
8303                 /* disable link interrupts for VFs */
8304                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
8305                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
8306                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
8307                 i40e_flush(hw);
8308
8309                 if (pci_num_vf(pdev)) {
8310                         dev_info(&pdev->dev,
8311                                  "Active VFs found, allocating resources.\n");
8312                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
8313                         if (err)
8314                                 dev_info(&pdev->dev,
8315                                          "Error %d allocating resources for existing VFs\n",
8316                                          err);
8317                 }
8318         }
8319
8320         pfs_found++;
8321
8322         i40e_dbg_pf_init(pf);
8323
8324         /* tell the firmware that we're starting */
8325         dv.major_version = DRV_VERSION_MAJOR;
8326         dv.minor_version = DRV_VERSION_MINOR;
8327         dv.build_version = DRV_VERSION_BUILD;
8328         dv.subbuild_version = 0;
8329         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
8330
8331         /* since everything's happy, start the service_task timer */
8332         mod_timer(&pf->service_timer,
8333                   round_jiffies(jiffies + pf->service_timer_period));
8334
8335         /* Get the negotiated link width and speed from PCI config space */
8336         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
8337
8338         i40e_set_pci_config_data(hw, link_status);
8339
8340         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
8341                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
8342                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
8343                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
8344                  "Unknown"),
8345                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
8346                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
8347                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
8348                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
8349                  "Unknown"));
8350
8351         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
8352             hw->bus.speed < i40e_bus_speed_8000) {
8353                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
8354                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
8355         }
8356
8357         /* print a string summarizing features */
8358         i40e_print_features(pf);
8359
8360         return 0;
8361
8362         /* Unwind what we've done if something failed in the setup */
8363 err_vsis:
8364         set_bit(__I40E_DOWN, &pf->state);
8365         i40e_clear_interrupt_scheme(pf);
8366         kfree(pf->vsi);
8367 err_switch_setup:
8368         i40e_reset_interrupt_capability(pf);
8369         del_timer_sync(&pf->service_timer);
8370 #ifdef CONFIG_I40E_DCB
8371 err_init_dcb:
8372 #endif /* CONFIG_I40E_DCB */
8373 err_mac_addr:
8374 err_configure_lan_hmc:
8375         (void)i40e_shutdown_lan_hmc(hw);
8376 err_init_lan_hmc:
8377         kfree(pf->qp_pile);
8378         kfree(pf->irq_pile);
8379 err_sw_init:
8380 err_adminq_setup:
8381         (void)i40e_shutdown_adminq(hw);
8382 err_pf_reset:
8383         iounmap(hw->hw_addr);
8384 err_ioremap:
8385         kfree(pf);
8386 err_pf_alloc:
8387         pci_disable_pcie_error_reporting(pdev);
8388         pci_release_selected_regions(pdev,
8389                                      pci_select_bars(pdev, IORESOURCE_MEM));
8390 err_pci_reg:
8391 err_dma:
8392         pci_disable_device(pdev);
8393         return err;
8394 }
8395
8396 /**
8397  * i40e_remove - Device removal routine
8398  * @pdev: PCI device information struct
8399  *
8400  * i40e_remove is called by the PCI subsystem to alert the driver
8401  * that is should release a PCI device.  This could be caused by a
8402  * Hot-Plug event, or because the driver is going to be removed from
8403  * memory.
8404  **/
8405 static void i40e_remove(struct pci_dev *pdev)
8406 {
8407         struct i40e_pf *pf = pci_get_drvdata(pdev);
8408         i40e_status ret_code;
8409         u32 reg;
8410         int i;
8411
8412         i40e_dbg_pf_exit(pf);
8413
8414         i40e_ptp_stop(pf);
8415
8416         /* no more scheduling of any task */
8417         set_bit(__I40E_DOWN, &pf->state);
8418         del_timer_sync(&pf->service_timer);
8419         cancel_work_sync(&pf->service_task);
8420
8421         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
8422                 i40e_free_vfs(pf);
8423                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
8424         }
8425
8426         i40e_fdir_teardown(pf);
8427
8428         /* If there is a switch structure or any orphans, remove them.
8429          * This will leave only the PF's VSI remaining.
8430          */
8431         for (i = 0; i < I40E_MAX_VEB; i++) {
8432                 if (!pf->veb[i])
8433                         continue;
8434
8435                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
8436                     pf->veb[i]->uplink_seid == 0)
8437                         i40e_switch_branch_release(pf->veb[i]);
8438         }
8439
8440         /* Now we can shutdown the PF's VSI, just before we kill
8441          * adminq and hmc.
8442          */
8443         if (pf->vsi[pf->lan_vsi])
8444                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
8445
8446         i40e_stop_misc_vector(pf);
8447         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8448                 synchronize_irq(pf->msix_entries[0].vector);
8449                 free_irq(pf->msix_entries[0].vector, pf);
8450         }
8451
8452         /* shutdown and destroy the HMC */
8453         ret_code = i40e_shutdown_lan_hmc(&pf->hw);
8454         if (ret_code)
8455                 dev_warn(&pdev->dev,
8456                          "Failed to destroy the HMC resources: %d\n", ret_code);
8457
8458         /* shutdown the adminq */
8459         ret_code = i40e_shutdown_adminq(&pf->hw);
8460         if (ret_code)
8461                 dev_warn(&pdev->dev,
8462                          "Failed to destroy the Admin Queue resources: %d\n",
8463                          ret_code);
8464
8465         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
8466         i40e_clear_interrupt_scheme(pf);
8467         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
8468                 if (pf->vsi[i]) {
8469                         i40e_vsi_clear_rings(pf->vsi[i]);
8470                         i40e_vsi_clear(pf->vsi[i]);
8471                         pf->vsi[i] = NULL;
8472                 }
8473         }
8474
8475         for (i = 0; i < I40E_MAX_VEB; i++) {
8476                 kfree(pf->veb[i]);
8477                 pf->veb[i] = NULL;
8478         }
8479
8480         kfree(pf->qp_pile);
8481         kfree(pf->irq_pile);
8482         kfree(pf->sw_config);
8483         kfree(pf->vsi);
8484
8485         /* force a PF reset to clean anything leftover */
8486         reg = rd32(&pf->hw, I40E_PFGEN_CTRL);
8487         wr32(&pf->hw, I40E_PFGEN_CTRL, (reg | I40E_PFGEN_CTRL_PFSWR_MASK));
8488         i40e_flush(&pf->hw);
8489
8490         iounmap(pf->hw.hw_addr);
8491         kfree(pf);
8492         pci_release_selected_regions(pdev,
8493                                      pci_select_bars(pdev, IORESOURCE_MEM));
8494
8495         pci_disable_pcie_error_reporting(pdev);
8496         pci_disable_device(pdev);
8497 }
8498
8499 /**
8500  * i40e_pci_error_detected - warning that something funky happened in PCI land
8501  * @pdev: PCI device information struct
8502  *
8503  * Called to warn that something happened and the error handling steps
8504  * are in progress.  Allows the driver to quiesce things, be ready for
8505  * remediation.
8506  **/
8507 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
8508                                                 enum pci_channel_state error)
8509 {
8510         struct i40e_pf *pf = pci_get_drvdata(pdev);
8511
8512         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
8513
8514         /* shutdown all operations */
8515         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
8516                 rtnl_lock();
8517                 i40e_prep_for_reset(pf);
8518                 rtnl_unlock();
8519         }
8520
8521         /* Request a slot reset */
8522         return PCI_ERS_RESULT_NEED_RESET;
8523 }
8524
8525 /**
8526  * i40e_pci_error_slot_reset - a PCI slot reset just happened
8527  * @pdev: PCI device information struct
8528  *
8529  * Called to find if the driver can work with the device now that
8530  * the pci slot has been reset.  If a basic connection seems good
8531  * (registers are readable and have sane content) then return a
8532  * happy little PCI_ERS_RESULT_xxx.
8533  **/
8534 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
8535 {
8536         struct i40e_pf *pf = pci_get_drvdata(pdev);
8537         pci_ers_result_t result;
8538         int err;
8539         u32 reg;
8540
8541         dev_info(&pdev->dev, "%s\n", __func__);
8542         if (pci_enable_device_mem(pdev)) {
8543                 dev_info(&pdev->dev,
8544                          "Cannot re-enable PCI device after reset.\n");
8545                 result = PCI_ERS_RESULT_DISCONNECT;
8546         } else {
8547                 pci_set_master(pdev);
8548                 pci_restore_state(pdev);
8549                 pci_save_state(pdev);
8550                 pci_wake_from_d3(pdev, false);
8551
8552                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
8553                 if (reg == 0)
8554                         result = PCI_ERS_RESULT_RECOVERED;
8555                 else
8556                         result = PCI_ERS_RESULT_DISCONNECT;
8557         }
8558
8559         err = pci_cleanup_aer_uncorrect_error_status(pdev);
8560         if (err) {
8561                 dev_info(&pdev->dev,
8562                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
8563                          err);
8564                 /* non-fatal, continue */
8565         }
8566
8567         return result;
8568 }
8569
8570 /**
8571  * i40e_pci_error_resume - restart operations after PCI error recovery
8572  * @pdev: PCI device information struct
8573  *
8574  * Called to allow the driver to bring things back up after PCI error
8575  * and/or reset recovery has finished.
8576  **/
8577 static void i40e_pci_error_resume(struct pci_dev *pdev)
8578 {
8579         struct i40e_pf *pf = pci_get_drvdata(pdev);
8580
8581         dev_info(&pdev->dev, "%s\n", __func__);
8582         if (test_bit(__I40E_SUSPENDED, &pf->state))
8583                 return;
8584
8585         rtnl_lock();
8586         i40e_handle_reset_warning(pf);
8587         rtnl_lock();
8588 }
8589
8590 /**
8591  * i40e_shutdown - PCI callback for shutting down
8592  * @pdev: PCI device information struct
8593  **/
8594 static void i40e_shutdown(struct pci_dev *pdev)
8595 {
8596         struct i40e_pf *pf = pci_get_drvdata(pdev);
8597         struct i40e_hw *hw = &pf->hw;
8598
8599         set_bit(__I40E_SUSPENDED, &pf->state);
8600         set_bit(__I40E_DOWN, &pf->state);
8601         rtnl_lock();
8602         i40e_prep_for_reset(pf);
8603         rtnl_unlock();
8604
8605         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
8606         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
8607
8608         if (system_state == SYSTEM_POWER_OFF) {
8609                 pci_wake_from_d3(pdev, pf->wol_en);
8610                 pci_set_power_state(pdev, PCI_D3hot);
8611         }
8612 }
8613
8614 #ifdef CONFIG_PM
8615 /**
8616  * i40e_suspend - PCI callback for moving to D3
8617  * @pdev: PCI device information struct
8618  **/
8619 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
8620 {
8621         struct i40e_pf *pf = pci_get_drvdata(pdev);
8622         struct i40e_hw *hw = &pf->hw;
8623
8624         set_bit(__I40E_SUSPENDED, &pf->state);
8625         set_bit(__I40E_DOWN, &pf->state);
8626         rtnl_lock();
8627         i40e_prep_for_reset(pf);
8628         rtnl_unlock();
8629
8630         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
8631         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
8632
8633         pci_wake_from_d3(pdev, pf->wol_en);
8634         pci_set_power_state(pdev, PCI_D3hot);
8635
8636         return 0;
8637 }
8638
8639 /**
8640  * i40e_resume - PCI callback for waking up from D3
8641  * @pdev: PCI device information struct
8642  **/
8643 static int i40e_resume(struct pci_dev *pdev)
8644 {
8645         struct i40e_pf *pf = pci_get_drvdata(pdev);
8646         u32 err;
8647
8648         pci_set_power_state(pdev, PCI_D0);
8649         pci_restore_state(pdev);
8650         /* pci_restore_state() clears dev->state_saves, so
8651          * call pci_save_state() again to restore it.
8652          */
8653         pci_save_state(pdev);
8654
8655         err = pci_enable_device_mem(pdev);
8656         if (err) {
8657                 dev_err(&pdev->dev,
8658                         "%s: Cannot enable PCI device from suspend\n",
8659                         __func__);
8660                 return err;
8661         }
8662         pci_set_master(pdev);
8663
8664         /* no wakeup events while running */
8665         pci_wake_from_d3(pdev, false);
8666
8667         /* handling the reset will rebuild the device state */
8668         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
8669                 clear_bit(__I40E_DOWN, &pf->state);
8670                 rtnl_lock();
8671                 i40e_reset_and_rebuild(pf, false);
8672                 rtnl_unlock();
8673         }
8674
8675         return 0;
8676 }
8677
8678 #endif
8679 static const struct pci_error_handlers i40e_err_handler = {
8680         .error_detected = i40e_pci_error_detected,
8681         .slot_reset = i40e_pci_error_slot_reset,
8682         .resume = i40e_pci_error_resume,
8683 };
8684
8685 static struct pci_driver i40e_driver = {
8686         .name     = i40e_driver_name,
8687         .id_table = i40e_pci_tbl,
8688         .probe    = i40e_probe,
8689         .remove   = i40e_remove,
8690 #ifdef CONFIG_PM
8691         .suspend  = i40e_suspend,
8692         .resume   = i40e_resume,
8693 #endif
8694         .shutdown = i40e_shutdown,
8695         .err_handler = &i40e_err_handler,
8696         .sriov_configure = i40e_pci_sriov_configure,
8697 };
8698
8699 /**
8700  * i40e_init_module - Driver registration routine
8701  *
8702  * i40e_init_module is the first routine called when the driver is
8703  * loaded. All it does is register with the PCI subsystem.
8704  **/
8705 static int __init i40e_init_module(void)
8706 {
8707         pr_info("%s: %s - version %s\n", i40e_driver_name,
8708                 i40e_driver_string, i40e_driver_version_str);
8709         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
8710         i40e_dbg_init();
8711         return pci_register_driver(&i40e_driver);
8712 }
8713 module_init(i40e_init_module);
8714
8715 /**
8716  * i40e_exit_module - Driver exit cleanup routine
8717  *
8718  * i40e_exit_module is called just before the driver is removed
8719  * from memory.
8720  **/
8721 static void __exit i40e_exit_module(void)
8722 {
8723         pci_unregister_driver(&i40e_driver);
8724         i40e_dbg_exit();
8725 }
8726 module_exit(i40e_exit_module);