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 4
  42 #define DRV_VERSION_BUILD 3
  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_ring *tx_ring, *rx_ring;
 360         struct i40e_vsi *vsi = np->vsi;
 361         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 362         int i;
 363
 364         if (test_bit(__I40E_DOWN, &vsi->state))
 365                 return stats;
 366
 367         if (!vsi->tx_rings)
 368                 return stats;
 369
 370         rcu_read_lock();
 371         for (i = 0; i < vsi->num_queue_pairs; i++) {
 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 i40e_watchdog_subtask() */
 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         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 534                            vsi->stat_offsets_loaded,
 535                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 536         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 537                            vsi->stat_offsets_loaded,
 538                            &oes->tx_errors, &es->tx_errors);
 539
 540         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 541                            I40E_GLV_GORCL(stat_idx),
 542                            vsi->stat_offsets_loaded,
 543                            &oes->rx_bytes, &es->rx_bytes);
 544         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 545                            I40E_GLV_UPRCL(stat_idx),
 546                            vsi->stat_offsets_loaded,
 547                            &oes->rx_unicast, &es->rx_unicast);
 548         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 549                            I40E_GLV_MPRCL(stat_idx),
 550                            vsi->stat_offsets_loaded,
 551                            &oes->rx_multicast, &es->rx_multicast);
 552         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 553                            I40E_GLV_BPRCL(stat_idx),
 554                            vsi->stat_offsets_loaded,
 555                            &oes->rx_broadcast, &es->rx_broadcast);
 556
 557         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 558                            I40E_GLV_GOTCL(stat_idx),
 559                            vsi->stat_offsets_loaded,
 560                            &oes->tx_bytes, &es->tx_bytes);
 561         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 562                            I40E_GLV_UPTCL(stat_idx),
 563                            vsi->stat_offsets_loaded,
 564                            &oes->tx_unicast, &es->tx_unicast);
 565         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 566                            I40E_GLV_MPTCL(stat_idx),
 567                            vsi->stat_offsets_loaded,
 568                            &oes->tx_multicast, &es->tx_multicast);
 569         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 570                            I40E_GLV_BPTCL(stat_idx),
 571                            vsi->stat_offsets_loaded,
 572                            &oes->tx_broadcast, &es->tx_broadcast);
 573         vsi->stat_offsets_loaded = true;
 574 }
 575
 576 /**
 577  * i40e_update_veb_stats - Update Switch component statistics
 578  * @veb: the VEB being updated
 579  **/
 580 static void i40e_update_veb_stats(struct i40e_veb *veb)
 581 {
 582         struct i40e_pf *pf = veb->pf;
 583         struct i40e_hw *hw = &pf->hw;
 584         struct i40e_eth_stats *oes;
 585         struct i40e_eth_stats *es;     /* device's eth stats */
 586         int idx = 0;
 587
 588         idx = veb->stats_idx;
 589         es = &veb->stats;
 590         oes = &veb->stats_offsets;
 591
 592         /* Gather up the stats that the hw collects */
 593         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 594                            veb->stat_offsets_loaded,
 595                            &oes->tx_discards, &es->tx_discards);
 596         if (hw->revision_id > 0)
 597                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 598                                    veb->stat_offsets_loaded,
 599                                    &oes->rx_unknown_protocol,
 600                                    &es->rx_unknown_protocol);
 601         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 602                            veb->stat_offsets_loaded,
 603                            &oes->rx_bytes, &es->rx_bytes);
 604         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 605                            veb->stat_offsets_loaded,
 606                            &oes->rx_unicast, &es->rx_unicast);
 607         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 608                            veb->stat_offsets_loaded,
 609                            &oes->rx_multicast, &es->rx_multicast);
 610         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 611                            veb->stat_offsets_loaded,
 612                            &oes->rx_broadcast, &es->rx_broadcast);
 613
 614         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 615                            veb->stat_offsets_loaded,
 616                            &oes->tx_bytes, &es->tx_bytes);
 617         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 618                            veb->stat_offsets_loaded,
 619                            &oes->tx_unicast, &es->tx_unicast);
 620         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 621                            veb->stat_offsets_loaded,
 622                            &oes->tx_multicast, &es->tx_multicast);
 623         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 624                            veb->stat_offsets_loaded,
 625                            &oes->tx_broadcast, &es->tx_broadcast);
 626         veb->stat_offsets_loaded = true;
 627 }
 628
 629 /**
 630  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 631  * @pf: the corresponding PF
 632  *
 633  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 634  **/
 635 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 636 {
 637         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 638         struct i40e_hw_port_stats *nsd = &pf->stats;
 639         struct i40e_hw *hw = &pf->hw;
 640         u64 xoff = 0;
 641         u16 i, v;
 642
 643         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 644             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 645                 return;
 646
 647         xoff = nsd->link_xoff_rx;
 648         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 649                            pf->stat_offsets_loaded,
 650                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 651
 652         /* No new LFC xoff rx */
 653         if (!(nsd->link_xoff_rx - xoff))
 654                 return;
 655
 656         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 657         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
 658                 struct i40e_vsi *vsi = pf->vsi[v];
 659
 660                 if (!vsi)
 661                         continue;
 662
 663                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 664                         struct i40e_ring *ring = vsi->tx_rings[i];
 665                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 666                 }
 667         }
 668 }
 669
 670 /**
 671  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 672  * @pf: the corresponding PF
 673  *
 674  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 675  **/
 676 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 677 {
 678         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 679         struct i40e_hw_port_stats *nsd = &pf->stats;
 680         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 681         struct i40e_dcbx_config *dcb_cfg;
 682         struct i40e_hw *hw = &pf->hw;
 683         u16 i, v;
 684         u8 tc;
 685
 686         dcb_cfg = &hw->local_dcbx_config;
 687
 688         /* See if DCB enabled with PFC TC */
 689         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 690             !(dcb_cfg->pfc.pfcenable)) {
 691                 i40e_update_link_xoff_rx(pf);
 692                 return;
 693         }
 694
 695         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 696                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 697                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 698                                    pf->stat_offsets_loaded,
 699                                    &osd->priority_xoff_rx[i],
 700                                    &nsd->priority_xoff_rx[i]);
 701
 702                 /* No new PFC xoff rx */
 703                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 704                         continue;
 705                 /* Get the TC for given priority */
 706                 tc = dcb_cfg->etscfg.prioritytable[i];
 707                 xoff[tc] = true;
 708         }
 709
 710         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 711         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
 712                 struct i40e_vsi *vsi = pf->vsi[v];
 713
 714                 if (!vsi)
 715                         continue;
 716
 717                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 718                         struct i40e_ring *ring = vsi->tx_rings[i];
 719
 720                         tc = ring->dcb_tc;
 721                         if (xoff[tc])
 722                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 723                                           &ring->state);
 724                 }
 725         }
 726 }
 727
 728 /**
 729  * i40e_update_vsi_stats - Update the vsi statistics counters.
 730  * @vsi: the VSI to be updated
 731  *
 732  * There are a few instances where we store the same stat in a
 733  * couple of different structs.  This is partly because we have
 734  * the netdev stats that need to be filled out, which is slightly
 735  * different from the "eth_stats" defined by the chip and used in
 736  * VF communications.  We sort it out here.
 737  **/
 738 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 739 {
 740         struct i40e_pf *pf = vsi->back;
 741         struct rtnl_link_stats64 *ons;
 742         struct rtnl_link_stats64 *ns;   /* netdev stats */
 743         struct i40e_eth_stats *oes;
 744         struct i40e_eth_stats *es;     /* device's eth stats */
 745         u32 tx_restart, tx_busy;
 746         u32 rx_page, rx_buf;
 747         u64 rx_p, rx_b;
 748         u64 tx_p, tx_b;
 749         u16 q;
 750
 751         if (test_bit(__I40E_DOWN, &vsi->state) ||
 752             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 753                 return;
 754
 755         ns = i40e_get_vsi_stats_struct(vsi);
 756         ons = &vsi->net_stats_offsets;
 757         es = &vsi->eth_stats;
 758         oes = &vsi->eth_stats_offsets;
 759
 760         /* Gather up the netdev and vsi stats that the driver collects
 761          * on the fly during packet processing
 762          */
 763         rx_b = rx_p = 0;
 764         tx_b = tx_p = 0;
 765         tx_restart = tx_busy = 0;
 766         rx_page = 0;
 767         rx_buf = 0;
 768         rcu_read_lock();
 769         for (q = 0; q < vsi->num_queue_pairs; q++) {
 770                 struct i40e_ring *p;
 771                 u64 bytes, packets;
 772                 unsigned int start;
 773
 774                 /* locate Tx ring */
 775                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 776
 777                 do {
 778                         start = u64_stats_fetch_begin_irq(&p->syncp);
 779                         packets = p->stats.packets;
 780                         bytes = p->stats.bytes;
 781                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 782                 tx_b += bytes;
 783                 tx_p += packets;
 784                 tx_restart += p->tx_stats.restart_queue;
 785                 tx_busy += p->tx_stats.tx_busy;
 786
 787                 /* Rx queue is part of the same block as Tx queue */
 788                 p = &p[1];
 789                 do {
 790                         start = u64_stats_fetch_begin_irq(&p->syncp);
 791                         packets = p->stats.packets;
 792                         bytes = p->stats.bytes;
 793                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 794                 rx_b += bytes;
 795                 rx_p += packets;
 796                 rx_buf += p->rx_stats.alloc_buff_failed;
 797                 rx_page += p->rx_stats.alloc_page_failed;
 798         }
 799         rcu_read_unlock();
 800         vsi->tx_restart = tx_restart;
 801         vsi->tx_busy = tx_busy;
 802         vsi->rx_page_failed = rx_page;
 803         vsi->rx_buf_failed = rx_buf;
 804
 805         ns->rx_packets = rx_p;
 806         ns->rx_bytes = rx_b;
 807         ns->tx_packets = tx_p;
 808         ns->tx_bytes = tx_b;
 809
 810         /* update netdev stats from eth stats */
 811         i40e_update_eth_stats(vsi);
 812         ons->tx_errors = oes->tx_errors;
 813         ns->tx_errors = es->tx_errors;
 814         ons->multicast = oes->rx_multicast;
 815         ns->multicast = es->rx_multicast;
 816         ons->rx_dropped = oes->rx_discards;
 817         ns->rx_dropped = es->rx_discards;
 818         ons->tx_dropped = oes->tx_discards;
 819         ns->tx_dropped = es->tx_discards;
 820
 821         /* pull in a couple PF stats if this is the main vsi */
 822         if (vsi == pf->vsi[pf->lan_vsi]) {
 823                 ns->rx_crc_errors = pf->stats.crc_errors;
 824                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 825                 ns->rx_length_errors = pf->stats.rx_length_errors;
 826         }
 827 }
 828
 829 /**
 830  * i40e_update_pf_stats - Update the pf statistics counters.
 831  * @pf: the PF to be updated
 832  **/
 833 static void i40e_update_pf_stats(struct i40e_pf *pf)
 834 {
 835         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 836         struct i40e_hw_port_stats *nsd = &pf->stats;
 837         struct i40e_hw *hw = &pf->hw;
 838         u32 val;
 839         int i;
 840
 841         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 842                            I40E_GLPRT_GORCL(hw->port),
 843                            pf->stat_offsets_loaded,
 844                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 845         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 846                            I40E_GLPRT_GOTCL(hw->port),
 847                            pf->stat_offsets_loaded,
 848                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 849         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 850                            pf->stat_offsets_loaded,
 851                            &osd->eth.rx_discards,
 852                            &nsd->eth.rx_discards);
 853         i40e_stat_update32(hw, I40E_GLPRT_TDPC(hw->port),
 854                            pf->stat_offsets_loaded,
 855                            &osd->eth.tx_discards,
 856                            &nsd->eth.tx_discards);
 857
 858         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 859                            I40E_GLPRT_UPRCL(hw->port),
 860                            pf->stat_offsets_loaded,
 861                            &osd->eth.rx_unicast,
 862                            &nsd->eth.rx_unicast);
 863         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 864                            I40E_GLPRT_MPRCL(hw->port),
 865                            pf->stat_offsets_loaded,
 866                            &osd->eth.rx_multicast,
 867                            &nsd->eth.rx_multicast);
 868         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 869                            I40E_GLPRT_BPRCL(hw->port),
 870                            pf->stat_offsets_loaded,
 871                            &osd->eth.rx_broadcast,
 872                            &nsd->eth.rx_broadcast);
 873         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 874                            I40E_GLPRT_UPTCL(hw->port),
 875                            pf->stat_offsets_loaded,
 876                            &osd->eth.tx_unicast,
 877                            &nsd->eth.tx_unicast);
 878         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 879                            I40E_GLPRT_MPTCL(hw->port),
 880                            pf->stat_offsets_loaded,
 881                            &osd->eth.tx_multicast,
 882                            &nsd->eth.tx_multicast);
 883         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 884                            I40E_GLPRT_BPTCL(hw->port),
 885                            pf->stat_offsets_loaded,
 886                            &osd->eth.tx_broadcast,
 887                            &nsd->eth.tx_broadcast);
 888
 889         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 890                            pf->stat_offsets_loaded,
 891                            &osd->tx_dropped_link_down,
 892                            &nsd->tx_dropped_link_down);
 893
 894         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 895                            pf->stat_offsets_loaded,
 896                            &osd->crc_errors, &nsd->crc_errors);
 897
 898         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 899                            pf->stat_offsets_loaded,
 900                            &osd->illegal_bytes, &nsd->illegal_bytes);
 901
 902         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 903                            pf->stat_offsets_loaded,
 904                            &osd->mac_local_faults,
 905                            &nsd->mac_local_faults);
 906         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 907                            pf->stat_offsets_loaded,
 908                            &osd->mac_remote_faults,
 909                            &nsd->mac_remote_faults);
 910
 911         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 912                            pf->stat_offsets_loaded,
 913                            &osd->rx_length_errors,
 914                            &nsd->rx_length_errors);
 915
 916         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 917                            pf->stat_offsets_loaded,
 918                            &osd->link_xon_rx, &nsd->link_xon_rx);
 919         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 920                            pf->stat_offsets_loaded,
 921                            &osd->link_xon_tx, &nsd->link_xon_tx);
 922         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
 923         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 924                            pf->stat_offsets_loaded,
 925                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 926
 927         for (i = 0; i < 8; i++) {
 928                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 929                                    pf->stat_offsets_loaded,
 930                                    &osd->priority_xon_rx[i],
 931                                    &nsd->priority_xon_rx[i]);
 932                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 933                                    pf->stat_offsets_loaded,
 934                                    &osd->priority_xon_tx[i],
 935                                    &nsd->priority_xon_tx[i]);
 936                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
 937                                    pf->stat_offsets_loaded,
 938                                    &osd->priority_xoff_tx[i],
 939                                    &nsd->priority_xoff_tx[i]);
 940                 i40e_stat_update32(hw,
 941                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
 942                                    pf->stat_offsets_loaded,
 943                                    &osd->priority_xon_2_xoff[i],
 944                                    &nsd->priority_xon_2_xoff[i]);
 945         }
 946
 947         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
 948                            I40E_GLPRT_PRC64L(hw->port),
 949                            pf->stat_offsets_loaded,
 950                            &osd->rx_size_64, &nsd->rx_size_64);
 951         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
 952                            I40E_GLPRT_PRC127L(hw->port),
 953                            pf->stat_offsets_loaded,
 954                            &osd->rx_size_127, &nsd->rx_size_127);
 955         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
 956                            I40E_GLPRT_PRC255L(hw->port),
 957                            pf->stat_offsets_loaded,
 958                            &osd->rx_size_255, &nsd->rx_size_255);
 959         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
 960                            I40E_GLPRT_PRC511L(hw->port),
 961                            pf->stat_offsets_loaded,
 962                            &osd->rx_size_511, &nsd->rx_size_511);
 963         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
 964                            I40E_GLPRT_PRC1023L(hw->port),
 965                            pf->stat_offsets_loaded,
 966                            &osd->rx_size_1023, &nsd->rx_size_1023);
 967         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
 968                            I40E_GLPRT_PRC1522L(hw->port),
 969                            pf->stat_offsets_loaded,
 970                            &osd->rx_size_1522, &nsd->rx_size_1522);
 971         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
 972                            I40E_GLPRT_PRC9522L(hw->port),
 973                            pf->stat_offsets_loaded,
 974                            &osd->rx_size_big, &nsd->rx_size_big);
 975
 976         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
 977                            I40E_GLPRT_PTC64L(hw->port),
 978                            pf->stat_offsets_loaded,
 979                            &osd->tx_size_64, &nsd->tx_size_64);
 980         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
 981                            I40E_GLPRT_PTC127L(hw->port),
 982                            pf->stat_offsets_loaded,
 983                            &osd->tx_size_127, &nsd->tx_size_127);
 984         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
 985                            I40E_GLPRT_PTC255L(hw->port),
 986                            pf->stat_offsets_loaded,
 987                            &osd->tx_size_255, &nsd->tx_size_255);
 988         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
 989                            I40E_GLPRT_PTC511L(hw->port),
 990                            pf->stat_offsets_loaded,
 991                            &osd->tx_size_511, &nsd->tx_size_511);
 992         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
 993                            I40E_GLPRT_PTC1023L(hw->port),
 994                            pf->stat_offsets_loaded,
 995                            &osd->tx_size_1023, &nsd->tx_size_1023);
 996         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
 997                            I40E_GLPRT_PTC1522L(hw->port),
 998                            pf->stat_offsets_loaded,
 999                            &osd->tx_size_1522, &nsd->tx_size_1522);
1000         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1001                            I40E_GLPRT_PTC9522L(hw->port),
1002                            pf->stat_offsets_loaded,
1003                            &osd->tx_size_big, &nsd->tx_size_big);
1004
1005         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1006                            pf->stat_offsets_loaded,
1007                            &osd->rx_undersize, &nsd->rx_undersize);
1008         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1009                            pf->stat_offsets_loaded,
1010                            &osd->rx_fragments, &nsd->rx_fragments);
1011         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1012                            pf->stat_offsets_loaded,
1013                            &osd->rx_oversize, &nsd->rx_oversize);
1014         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1015                            pf->stat_offsets_loaded,
1016                            &osd->rx_jabber, &nsd->rx_jabber);
1017
1018         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1019         nsd->tx_lpi_status =
1020                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1021                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1022         nsd->rx_lpi_status =
1023                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1024                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1025         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1026                            pf->stat_offsets_loaded,
1027                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1028         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1029                            pf->stat_offsets_loaded,
1030                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1031
1032         pf->stat_offsets_loaded = true;
1033 }
1034
1035 /**
1036  * i40e_update_stats - Update the various statistics counters.
1037  * @vsi: the VSI to be updated
1038  *
1039  * Update the various stats for this VSI and its related entities.
1040  **/
1041 void i40e_update_stats(struct i40e_vsi *vsi)
1042 {
1043         struct i40e_pf *pf = vsi->back;
1044
1045         if (vsi == pf->vsi[pf->lan_vsi])
1046                 i40e_update_pf_stats(pf);
1047
1048         i40e_update_vsi_stats(vsi);
1049 }
1050
1051 /**
1052  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1053  * @vsi: the VSI to be searched
1054  * @macaddr: the MAC address
1055  * @vlan: the vlan
1056  * @is_vf: make sure its a vf filter, else doesn't matter
1057  * @is_netdev: make sure its a netdev filter, else doesn't matter
1058  *
1059  * Returns ptr to the filter object or NULL
1060  **/
1061 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1062                                                 u8 *macaddr, s16 vlan,
1063                                                 bool is_vf, bool is_netdev)
1064 {
1065         struct i40e_mac_filter *f;
1066
1067         if (!vsi || !macaddr)
1068                 return NULL;
1069
1070         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1071                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1072                     (vlan == f->vlan)    &&
1073                     (!is_vf || f->is_vf) &&
1074                     (!is_netdev || f->is_netdev))
1075                         return f;
1076         }
1077         return NULL;
1078 }
1079
1080 /**
1081  * i40e_find_mac - Find a mac addr in the macvlan filters list
1082  * @vsi: the VSI to be searched
1083  * @macaddr: the MAC address we are searching for
1084  * @is_vf: make sure its a vf filter, else doesn't matter
1085  * @is_netdev: make sure its a netdev filter, else doesn't matter
1086  *
1087  * Returns the first filter with the provided MAC address or NULL if
1088  * MAC address was not found
1089  **/
1090 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1091                                       bool is_vf, bool is_netdev)
1092 {
1093         struct i40e_mac_filter *f;
1094
1095         if (!vsi || !macaddr)
1096                 return NULL;
1097
1098         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1099                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1100                     (!is_vf || f->is_vf) &&
1101                     (!is_netdev || f->is_netdev))
1102                         return f;
1103         }
1104         return NULL;
1105 }
1106
1107 /**
1108  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1109  * @vsi: the VSI to be searched
1110  *
1111  * Returns true if VSI is in vlan mode or false otherwise
1112  **/
1113 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1114 {
1115         struct i40e_mac_filter *f;
1116
1117         /* Only -1 for all the filters denotes not in vlan mode
1118          * so we have to go through all the list in order to make sure
1119          */
1120         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1121                 if (f->vlan >= 0)
1122                         return true;
1123         }
1124
1125         return false;
1126 }
1127
1128 /**
1129  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1130  * @vsi: the VSI to be searched
1131  * @macaddr: the mac address to be filtered
1132  * @is_vf: true if it is a vf
1133  * @is_netdev: true if it is a netdev
1134  *
1135  * Goes through all the macvlan filters and adds a
1136  * macvlan filter for each unique vlan that already exists
1137  *
1138  * Returns first filter found on success, else NULL
1139  **/
1140 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1141                                              bool is_vf, bool is_netdev)
1142 {
1143         struct i40e_mac_filter *f;
1144
1145         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1146                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1147                                       is_vf, is_netdev)) {
1148                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1149                                              is_vf, is_netdev))
1150                                 return NULL;
1151                 }
1152         }
1153
1154         return list_first_entry_or_null(&vsi->mac_filter_list,
1155                                         struct i40e_mac_filter, list);
1156 }
1157
1158 /**
1159  * i40e_add_filter - Add a mac/vlan filter to the VSI
1160  * @vsi: the VSI to be searched
1161  * @macaddr: the MAC address
1162  * @vlan: the vlan
1163  * @is_vf: make sure its a vf filter, else doesn't matter
1164  * @is_netdev: make sure its a netdev filter, else doesn't matter
1165  *
1166  * Returns ptr to the filter object or NULL when no memory available.
1167  **/
1168 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1169                                         u8 *macaddr, s16 vlan,
1170                                         bool is_vf, bool is_netdev)
1171 {
1172         struct i40e_mac_filter *f;
1173
1174         if (!vsi || !macaddr)
1175                 return NULL;
1176
1177         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1178         if (!f) {
1179                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1180                 if (!f)
1181                         goto add_filter_out;
1182
1183                 memcpy(f->macaddr, macaddr, ETH_ALEN);
1184                 f->vlan = vlan;
1185                 f->changed = true;
1186
1187                 INIT_LIST_HEAD(&f->list);
1188                 list_add(&f->list, &vsi->mac_filter_list);
1189         }
1190
1191         /* increment counter and add a new flag if needed */
1192         if (is_vf) {
1193                 if (!f->is_vf) {
1194                         f->is_vf = true;
1195                         f->counter++;
1196                 }
1197         } else if (is_netdev) {
1198                 if (!f->is_netdev) {
1199                         f->is_netdev = true;
1200                         f->counter++;
1201                 }
1202         } else {
1203                 f->counter++;
1204         }
1205
1206         /* changed tells sync_filters_subtask to
1207          * push the filter down to the firmware
1208          */
1209         if (f->changed) {
1210                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1211                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1212         }
1213
1214 add_filter_out:
1215         return f;
1216 }
1217
1218 /**
1219  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1220  * @vsi: the VSI to be searched
1221  * @macaddr: the MAC address
1222  * @vlan: the vlan
1223  * @is_vf: make sure it's a vf filter, else doesn't matter
1224  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1225  **/
1226 void i40e_del_filter(struct i40e_vsi *vsi,
1227                      u8 *macaddr, s16 vlan,
1228                      bool is_vf, bool is_netdev)
1229 {
1230         struct i40e_mac_filter *f;
1231
1232         if (!vsi || !macaddr)
1233                 return;
1234
1235         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1236         if (!f || f->counter == 0)
1237                 return;
1238
1239         if (is_vf) {
1240                 if (f->is_vf) {
1241                         f->is_vf = false;
1242                         f->counter--;
1243                 }
1244         } else if (is_netdev) {
1245                 if (f->is_netdev) {
1246                         f->is_netdev = false;
1247                         f->counter--;
1248                 }
1249         } else {
1250                 /* make sure we don't remove a filter in use by vf or netdev */
1251                 int min_f = 0;
1252                 min_f += (f->is_vf ? 1 : 0);
1253                 min_f += (f->is_netdev ? 1 : 0);
1254
1255                 if (f->counter > min_f)
1256                         f->counter--;
1257         }
1258
1259         /* counter == 0 tells sync_filters_subtask to
1260          * remove the filter from the firmware's list
1261          */
1262         if (f->counter == 0) {
1263                 f->changed = true;
1264                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1265                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1266         }
1267 }
1268
1269 /**
1270  * i40e_set_mac - NDO callback to set mac address
1271  * @netdev: network interface device structure
1272  * @p: pointer to an address structure
1273  *
1274  * Returns 0 on success, negative on failure
1275  **/
1276 static int i40e_set_mac(struct net_device *netdev, void *p)
1277 {
1278         struct i40e_netdev_priv *np = netdev_priv(netdev);
1279         struct i40e_vsi *vsi = np->vsi;
1280         struct sockaddr *addr = p;
1281         struct i40e_mac_filter *f;
1282
1283         if (!is_valid_ether_addr(addr->sa_data))
1284                 return -EADDRNOTAVAIL;
1285
1286         netdev_info(netdev, "set mac address=%pM\n", addr->sa_data);
1287
1288         if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
1289                 return 0;
1290
1291         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1292             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1293                 return -EADDRNOTAVAIL;
1294
1295         if (vsi->type == I40E_VSI_MAIN) {
1296                 i40e_status ret;
1297                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1298                                                 I40E_AQC_WRITE_TYPE_LAA_ONLY,
1299                                                 addr->sa_data, NULL);
1300                 if (ret) {
1301                         netdev_info(netdev,
1302                                     "Addr change for Main VSI failed: %d\n",
1303                                     ret);
1304                         return -EADDRNOTAVAIL;
1305                 }
1306
1307                 memcpy(vsi->back->hw.mac.addr, addr->sa_data, netdev->addr_len);
1308         }
1309
1310         /* In order to be sure to not drop any packets, add the new address
1311          * then delete the old one.
1312          */
1313         f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY, false, false);
1314         if (!f)
1315                 return -ENOMEM;
1316
1317         i40e_sync_vsi_filters(vsi);
1318         i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY, false, false);
1319         i40e_sync_vsi_filters(vsi);
1320
1321         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1322
1323         return 0;
1324 }
1325
1326 /**
1327  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1328  * @vsi: the VSI being setup
1329  * @ctxt: VSI context structure
1330  * @enabled_tc: Enabled TCs bitmap
1331  * @is_add: True if called before Add VSI
1332  *
1333  * Setup VSI queue mapping for enabled traffic classes.
1334  **/
1335 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1336                                      struct i40e_vsi_context *ctxt,
1337                                      u8 enabled_tc,
1338                                      bool is_add)
1339 {
1340         struct i40e_pf *pf = vsi->back;
1341         u16 sections = 0;
1342         u8 netdev_tc = 0;
1343         u16 numtc = 0;
1344         u16 qcount;
1345         u8 offset;
1346         u16 qmap;
1347         int i;
1348         u16 num_tc_qps = 0;
1349
1350         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1351         offset = 0;
1352
1353         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1354                 /* Find numtc from enabled TC bitmap */
1355                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1356                         if (enabled_tc & (1 << i)) /* TC is enabled */
1357                                 numtc++;
1358                 }
1359                 if (!numtc) {
1360                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1361                         numtc = 1;
1362                 }
1363         } else {
1364                 /* At least TC0 is enabled in case of non-DCB case */
1365                 numtc = 1;
1366         }
1367
1368         vsi->tc_config.numtc = numtc;
1369         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1370         /* Number of queues per enabled TC */
1371         num_tc_qps = rounddown_pow_of_two(vsi->alloc_queue_pairs/numtc);
1372         num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
1373
1374         /* Setup queue offset/count for all TCs for given VSI */
1375         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1376                 /* See if the given TC is enabled for the given VSI */
1377                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1378                         int pow, num_qps;
1379
1380                         switch (vsi->type) {
1381                         case I40E_VSI_MAIN:
1382                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1383                                 break;
1384                         case I40E_VSI_FDIR:
1385                         case I40E_VSI_SRIOV:
1386                         case I40E_VSI_VMDQ2:
1387                         default:
1388                                 qcount = num_tc_qps;
1389                                 WARN_ON(i != 0);
1390                                 break;
1391                         }
1392                         vsi->tc_config.tc_info[i].qoffset = offset;
1393                         vsi->tc_config.tc_info[i].qcount = qcount;
1394
1395                         /* find the power-of-2 of the number of queue pairs */
1396                         num_qps = qcount;
1397                         pow = 0;
1398                         while (num_qps && ((1 << pow) < qcount)) {
1399                                 pow++;
1400                                 num_qps >>= 1;
1401                         }
1402
1403                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1404                         qmap =
1405                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1406                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1407
1408                         offset += qcount;
1409                 } else {
1410                         /* TC is not enabled so set the offset to
1411                          * default queue and allocate one queue
1412                          * for the given TC.
1413                          */
1414                         vsi->tc_config.tc_info[i].qoffset = 0;
1415                         vsi->tc_config.tc_info[i].qcount = 1;
1416                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1417
1418                         qmap = 0;
1419                 }
1420                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1421         }
1422
1423         /* Set actual Tx/Rx queue pairs */
1424         vsi->num_queue_pairs = offset;
1425
1426         /* Scheduler section valid can only be set for ADD VSI */
1427         if (is_add) {
1428                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1429
1430                 ctxt->info.up_enable_bits = enabled_tc;
1431         }
1432         if (vsi->type == I40E_VSI_SRIOV) {
1433                 ctxt->info.mapping_flags |=
1434                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1435                 for (i = 0; i < vsi->num_queue_pairs; i++)
1436                         ctxt->info.queue_mapping[i] =
1437                                                cpu_to_le16(vsi->base_queue + i);
1438         } else {
1439                 ctxt->info.mapping_flags |=
1440                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1441                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1442         }
1443         ctxt->info.valid_sections |= cpu_to_le16(sections);
1444 }
1445
1446 /**
1447  * i40e_set_rx_mode - NDO callback to set the netdev filters
1448  * @netdev: network interface device structure
1449  **/
1450 static void i40e_set_rx_mode(struct net_device *netdev)
1451 {
1452         struct i40e_netdev_priv *np = netdev_priv(netdev);
1453         struct i40e_mac_filter *f, *ftmp;
1454         struct i40e_vsi *vsi = np->vsi;
1455         struct netdev_hw_addr *uca;
1456         struct netdev_hw_addr *mca;
1457         struct netdev_hw_addr *ha;
1458
1459         /* add addr if not already in the filter list */
1460         netdev_for_each_uc_addr(uca, netdev) {
1461                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1462                         if (i40e_is_vsi_in_vlan(vsi))
1463                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1464                                                      false, true);
1465                         else
1466                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1467                                                 false, true);
1468                 }
1469         }
1470
1471         netdev_for_each_mc_addr(mca, netdev) {
1472                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1473                         if (i40e_is_vsi_in_vlan(vsi))
1474                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1475                                                      false, true);
1476                         else
1477                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1478                                                 false, true);
1479                 }
1480         }
1481
1482         /* remove filter if not in netdev list */
1483         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1484                 bool found = false;
1485
1486                 if (!f->is_netdev)
1487                         continue;
1488
1489                 if (is_multicast_ether_addr(f->macaddr)) {
1490                         netdev_for_each_mc_addr(mca, netdev) {
1491                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1492                                         found = true;
1493                                         break;
1494                                 }
1495                         }
1496                 } else {
1497                         netdev_for_each_uc_addr(uca, netdev) {
1498                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1499                                         found = true;
1500                                         break;
1501                                 }
1502                         }
1503
1504                         for_each_dev_addr(netdev, ha) {
1505                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1506                                         found = true;
1507                                         break;
1508                                 }
1509                         }
1510                 }
1511                 if (!found)
1512                         i40e_del_filter(
1513                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1514         }
1515
1516         /* check for other flag changes */
1517         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1518                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1519                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1520         }
1521 }
1522
1523 /**
1524  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1525  * @vsi: ptr to the VSI
1526  *
1527  * Push any outstanding VSI filter changes through the AdminQ.
1528  *
1529  * Returns 0 or error value
1530  **/
1531 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1532 {
1533         struct i40e_mac_filter *f, *ftmp;
1534         bool promisc_forced_on = false;
1535         bool add_happened = false;
1536         int filter_list_len = 0;
1537         u32 changed_flags = 0;
1538         i40e_status aq_ret = 0;
1539         struct i40e_pf *pf;
1540         int num_add = 0;
1541         int num_del = 0;
1542         u16 cmd_flags;
1543
1544         /* empty array typed pointers, kcalloc later */
1545         struct i40e_aqc_add_macvlan_element_data *add_list;
1546         struct i40e_aqc_remove_macvlan_element_data *del_list;
1547
1548         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1549                 usleep_range(1000, 2000);
1550         pf = vsi->back;
1551
1552         if (vsi->netdev) {
1553                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1554                 vsi->current_netdev_flags = vsi->netdev->flags;
1555         }
1556
1557         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1558                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1559
1560                 filter_list_len = pf->hw.aq.asq_buf_size /
1561                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1562                 del_list = kcalloc(filter_list_len,
1563                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1564                             GFP_KERNEL);
1565                 if (!del_list)
1566                         return -ENOMEM;
1567
1568                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1569                         if (!f->changed)
1570                                 continue;
1571
1572                         if (f->counter != 0)
1573                                 continue;
1574                         f->changed = false;
1575                         cmd_flags = 0;
1576
1577                         /* add to delete list */
1578                         memcpy(del_list[num_del].mac_addr,
1579                                f->macaddr, ETH_ALEN);
1580                         del_list[num_del].vlan_tag =
1581                                 cpu_to_le16((u16)(f->vlan ==
1582                                             I40E_VLAN_ANY ? 0 : f->vlan));
1583
1584                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1585                         del_list[num_del].flags = cmd_flags;
1586                         num_del++;
1587
1588                         /* unlink from filter list */
1589                         list_del(&f->list);
1590                         kfree(f);
1591
1592                         /* flush a full buffer */
1593                         if (num_del == filter_list_len) {
1594                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1595                                             vsi->seid, del_list, num_del,
1596                                             NULL);
1597                                 num_del = 0;
1598                                 memset(del_list, 0, sizeof(*del_list));
1599
1600                                 if (aq_ret)
1601                                         dev_info(&pf->pdev->dev,
1602                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1603                                                  aq_ret,
1604                                                  pf->hw.aq.asq_last_status);
1605                         }
1606                 }
1607                 if (num_del) {
1608                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1609                                                      del_list, num_del, NULL);
1610                         num_del = 0;
1611
1612                         if (aq_ret)
1613                                 dev_info(&pf->pdev->dev,
1614                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1615                                          aq_ret, pf->hw.aq.asq_last_status);
1616                 }
1617
1618                 kfree(del_list);
1619                 del_list = NULL;
1620
1621                 /* do all the adds now */
1622                 filter_list_len = pf->hw.aq.asq_buf_size /
1623                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1624                 add_list = kcalloc(filter_list_len,
1625                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1626                                GFP_KERNEL);
1627                 if (!add_list)
1628                         return -ENOMEM;
1629
1630                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1631                         if (!f->changed)
1632                                 continue;
1633
1634                         if (f->counter == 0)
1635                                 continue;
1636                         f->changed = false;
1637                         add_happened = true;
1638                         cmd_flags = 0;
1639
1640                         /* add to add array */
1641                         memcpy(add_list[num_add].mac_addr,
1642                                f->macaddr, ETH_ALEN);
1643                         add_list[num_add].vlan_tag =
1644                                 cpu_to_le16(
1645                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1646                         add_list[num_add].queue_number = 0;
1647
1648                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1649                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1650                         num_add++;
1651
1652                         /* flush a full buffer */
1653                         if (num_add == filter_list_len) {
1654                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1655                                                              add_list, num_add,
1656                                                              NULL);
1657                                 num_add = 0;
1658
1659                                 if (aq_ret)
1660                                         break;
1661                                 memset(add_list, 0, sizeof(*add_list));
1662                         }
1663                 }
1664                 if (num_add) {
1665                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1666                                                      add_list, num_add, NULL);
1667                         num_add = 0;
1668                 }
1669                 kfree(add_list);
1670                 add_list = NULL;
1671
1672                 if (add_happened && (!aq_ret)) {
1673                         /* do nothing */;
1674                 } else if (add_happened && (aq_ret)) {
1675                         dev_info(&pf->pdev->dev,
1676                                  "add filter failed, err %d, aq_err %d\n",
1677                                  aq_ret, pf->hw.aq.asq_last_status);
1678                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1679                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1680                                       &vsi->state)) {
1681                                 promisc_forced_on = true;
1682                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1683                                         &vsi->state);
1684                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1685                         }
1686                 }
1687         }
1688
1689         /* check for changes in promiscuous modes */
1690         if (changed_flags & IFF_ALLMULTI) {
1691                 bool cur_multipromisc;
1692                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1693                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1694                                                                vsi->seid,
1695                                                                cur_multipromisc,
1696                                                                NULL);
1697                 if (aq_ret)
1698                         dev_info(&pf->pdev->dev,
1699                                  "set multi promisc failed, err %d, aq_err %d\n",
1700                                  aq_ret, pf->hw.aq.asq_last_status);
1701         }
1702         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1703                 bool cur_promisc;
1704                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1705                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1706                                         &vsi->state));
1707                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1708                                                              vsi->seid,
1709                                                              cur_promisc, NULL);
1710                 if (aq_ret)
1711                         dev_info(&pf->pdev->dev,
1712                                  "set uni promisc failed, err %d, aq_err %d\n",
1713                                  aq_ret, pf->hw.aq.asq_last_status);
1714                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1715                                                    vsi->seid,
1716                                                    cur_promisc, NULL);
1717                 if (aq_ret)
1718                         dev_info(&pf->pdev->dev,
1719                                  "set brdcast promisc failed, err %d, aq_err %d\n",
1720                                  aq_ret, pf->hw.aq.asq_last_status);
1721         }
1722
1723         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1724         return 0;
1725 }
1726
1727 /**
1728  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1729  * @pf: board private structure
1730  **/
1731 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1732 {
1733         int v;
1734
1735         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1736                 return;
1737         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1738
1739         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
1740                 if (pf->vsi[v] &&
1741                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1742                         i40e_sync_vsi_filters(pf->vsi[v]);
1743         }
1744 }
1745
1746 /**
1747  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1748  * @netdev: network interface device structure
1749  * @new_mtu: new value for maximum frame size
1750  *
1751  * Returns 0 on success, negative on failure
1752  **/
1753 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1754 {
1755         struct i40e_netdev_priv *np = netdev_priv(netdev);
1756         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1757         struct i40e_vsi *vsi = np->vsi;
1758
1759         /* MTU < 68 is an error and causes problems on some kernels */
1760         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1761                 return -EINVAL;
1762
1763         netdev_info(netdev, "changing MTU from %d to %d\n",
1764                     netdev->mtu, new_mtu);
1765         netdev->mtu = new_mtu;
1766         if (netif_running(netdev))
1767                 i40e_vsi_reinit_locked(vsi);
1768
1769         return 0;
1770 }
1771
1772 /**
1773  * i40e_ioctl - Access the hwtstamp interface
1774  * @netdev: network interface device structure
1775  * @ifr: interface request data
1776  * @cmd: ioctl command
1777  **/
1778 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1779 {
1780         struct i40e_netdev_priv *np = netdev_priv(netdev);
1781         struct i40e_pf *pf = np->vsi->back;
1782
1783         switch (cmd) {
1784         case SIOCGHWTSTAMP:
1785                 return i40e_ptp_get_ts_config(pf, ifr);
1786         case SIOCSHWTSTAMP:
1787                 return i40e_ptp_set_ts_config(pf, ifr);
1788         default:
1789                 return -EOPNOTSUPP;
1790         }
1791 }
1792
1793 /**
1794  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1795  * @vsi: the vsi being adjusted
1796  **/
1797 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1798 {
1799         struct i40e_vsi_context ctxt;
1800         i40e_status ret;
1801
1802         if ((vsi->info.valid_sections &
1803              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1804             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1805                 return;  /* already enabled */
1806
1807         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1808         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1809                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1810
1811         ctxt.seid = vsi->seid;
1812         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1813         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1814         if (ret) {
1815                 dev_info(&vsi->back->pdev->dev,
1816                          "%s: update vsi failed, aq_err=%d\n",
1817                          __func__, vsi->back->hw.aq.asq_last_status);
1818         }
1819 }
1820
1821 /**
1822  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1823  * @vsi: the vsi being adjusted
1824  **/
1825 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1826 {
1827         struct i40e_vsi_context ctxt;
1828         i40e_status ret;
1829
1830         if ((vsi->info.valid_sections &
1831              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1832             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1833              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1834                 return;  /* already disabled */
1835
1836         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1837         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1838                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1839
1840         ctxt.seid = vsi->seid;
1841         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1842         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1843         if (ret) {
1844                 dev_info(&vsi->back->pdev->dev,
1845                          "%s: update vsi failed, aq_err=%d\n",
1846                          __func__, vsi->back->hw.aq.asq_last_status);
1847         }
1848 }
1849
1850 /**
1851  * i40e_vlan_rx_register - Setup or shutdown vlan offload
1852  * @netdev: network interface to be adjusted
1853  * @features: netdev features to test if VLAN offload is enabled or not
1854  **/
1855 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
1856 {
1857         struct i40e_netdev_priv *np = netdev_priv(netdev);
1858         struct i40e_vsi *vsi = np->vsi;
1859
1860         if (features & NETIF_F_HW_VLAN_CTAG_RX)
1861                 i40e_vlan_stripping_enable(vsi);
1862         else
1863                 i40e_vlan_stripping_disable(vsi);
1864 }
1865
1866 /**
1867  * i40e_vsi_add_vlan - Add vsi membership for given vlan
1868  * @vsi: the vsi being configured
1869  * @vid: vlan id to be added (0 = untagged only , -1 = any)
1870  **/
1871 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
1872 {
1873         struct i40e_mac_filter *f, *add_f;
1874         bool is_netdev, is_vf;
1875
1876         is_vf = (vsi->type == I40E_VSI_SRIOV);
1877         is_netdev = !!(vsi->netdev);
1878
1879         if (is_netdev) {
1880                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
1881                                         is_vf, is_netdev);
1882                 if (!add_f) {
1883                         dev_info(&vsi->back->pdev->dev,
1884                                  "Could not add vlan filter %d for %pM\n",
1885                                  vid, vsi->netdev->dev_addr);
1886                         return -ENOMEM;
1887                 }
1888         }
1889
1890         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1891                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
1892                 if (!add_f) {
1893                         dev_info(&vsi->back->pdev->dev,
1894                                  "Could not add vlan filter %d for %pM\n",
1895                                  vid, f->macaddr);
1896                         return -ENOMEM;
1897                 }
1898         }
1899
1900         /* Now if we add a vlan tag, make sure to check if it is the first
1901          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
1902          * with 0, so we now accept untagged and specified tagged traffic
1903          * (and not any taged and untagged)
1904          */
1905         if (vid > 0) {
1906                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
1907                                                   I40E_VLAN_ANY,
1908                                                   is_vf, is_netdev)) {
1909                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
1910                                         I40E_VLAN_ANY, is_vf, is_netdev);
1911                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
1912                                                 is_vf, is_netdev);
1913                         if (!add_f) {
1914                                 dev_info(&vsi->back->pdev->dev,
1915                                          "Could not add filter 0 for %pM\n",
1916                                          vsi->netdev->dev_addr);
1917                                 return -ENOMEM;
1918                         }
1919                 }
1920         }
1921
1922         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
1923         if (vid > 0 && !vsi->info.pvid) {
1924                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1925                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1926                                              is_vf, is_netdev)) {
1927                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1928                                                 is_vf, is_netdev);
1929                                 add_f = i40e_add_filter(vsi, f->macaddr,
1930                                                         0, is_vf, is_netdev);
1931                                 if (!add_f) {
1932                                         dev_info(&vsi->back->pdev->dev,
1933                                                  "Could not add filter 0 for %pM\n",
1934                                                  f->macaddr);
1935                                         return -ENOMEM;
1936                                 }
1937                         }
1938                 }
1939         }
1940
1941         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1942             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1943                 return 0;
1944
1945         return i40e_sync_vsi_filters(vsi);
1946 }
1947
1948 /**
1949  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
1950  * @vsi: the vsi being configured
1951  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
1952  *
1953  * Return: 0 on success or negative otherwise
1954  **/
1955 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
1956 {
1957         struct net_device *netdev = vsi->netdev;
1958         struct i40e_mac_filter *f, *add_f;
1959         bool is_vf, is_netdev;
1960         int filter_count = 0;
1961
1962         is_vf = (vsi->type == I40E_VSI_SRIOV);
1963         is_netdev = !!(netdev);
1964
1965         if (is_netdev)
1966                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
1967
1968         list_for_each_entry(f, &vsi->mac_filter_list, list)
1969                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
1970
1971         /* go through all the filters for this VSI and if there is only
1972          * vid == 0 it means there are no other filters, so vid 0 must
1973          * be replaced with -1. This signifies that we should from now
1974          * on accept any traffic (with any tag present, or untagged)
1975          */
1976         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1977                 if (is_netdev) {
1978                         if (f->vlan &&
1979                             ether_addr_equal(netdev->dev_addr, f->macaddr))
1980                                 filter_count++;
1981                 }
1982
1983                 if (f->vlan)
1984                         filter_count++;
1985         }
1986
1987         if (!filter_count && is_netdev) {
1988                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
1989                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1990                                     is_vf, is_netdev);
1991                 if (!f) {
1992                         dev_info(&vsi->back->pdev->dev,
1993                                  "Could not add filter %d for %pM\n",
1994                                  I40E_VLAN_ANY, netdev->dev_addr);
1995                         return -ENOMEM;
1996                 }
1997         }
1998
1999         if (!filter_count) {
2000                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2001                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2002                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2003                                             is_vf, is_netdev);
2004                         if (!add_f) {
2005                                 dev_info(&vsi->back->pdev->dev,
2006                                          "Could not add filter %d for %pM\n",
2007                                          I40E_VLAN_ANY, f->macaddr);
2008                                 return -ENOMEM;
2009                         }
2010                 }
2011         }
2012
2013         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2014             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2015                 return 0;
2016
2017         return i40e_sync_vsi_filters(vsi);
2018 }
2019
2020 /**
2021  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2022  * @netdev: network interface to be adjusted
2023  * @vid: vlan id to be added
2024  *
2025  * net_device_ops implementation for adding vlan ids
2026  **/
2027 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2028                                 __always_unused __be16 proto, u16 vid)
2029 {
2030         struct i40e_netdev_priv *np = netdev_priv(netdev);
2031         struct i40e_vsi *vsi = np->vsi;
2032         int ret = 0;
2033
2034         if (vid > 4095)
2035                 return -EINVAL;
2036
2037         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2038
2039         /* If the network stack called us with vid = 0 then
2040          * it is asking to receive priority tagged packets with
2041          * vlan id 0.  Our HW receives them by default when configured
2042          * to receive untagged packets so there is no need to add an
2043          * extra filter for vlan 0 tagged packets.
2044          */
2045         if (vid)
2046                 ret = i40e_vsi_add_vlan(vsi, vid);
2047
2048         if (!ret && (vid < VLAN_N_VID))
2049                 set_bit(vid, vsi->active_vlans);
2050
2051         return ret;
2052 }
2053
2054 /**
2055  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2056  * @netdev: network interface to be adjusted
2057  * @vid: vlan id to be removed
2058  *
2059  * net_device_ops implementation for removing vlan ids
2060  **/
2061 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2062                                  __always_unused __be16 proto, u16 vid)
2063 {
2064         struct i40e_netdev_priv *np = netdev_priv(netdev);
2065         struct i40e_vsi *vsi = np->vsi;
2066
2067         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2068
2069         /* return code is ignored as there is nothing a user
2070          * can do about failure to remove and a log message was
2071          * already printed from the other function
2072          */
2073         i40e_vsi_kill_vlan(vsi, vid);
2074
2075         clear_bit(vid, vsi->active_vlans);
2076
2077         return 0;
2078 }
2079
2080 /**
2081  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2082  * @vsi: the vsi being brought back up
2083  **/
2084 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2085 {
2086         u16 vid;
2087
2088         if (!vsi->netdev)
2089                 return;
2090
2091         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2092
2093         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2094                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2095                                      vid);
2096 }
2097
2098 /**
2099  * i40e_vsi_add_pvid - Add pvid for the VSI
2100  * @vsi: the vsi being adjusted
2101  * @vid: the vlan id to set as a PVID
2102  **/
2103 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2104 {
2105         struct i40e_vsi_context ctxt;
2106         i40e_status aq_ret;
2107
2108         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2109         vsi->info.pvid = cpu_to_le16(vid);
2110         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2111                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2112                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2113
2114         ctxt.seid = vsi->seid;
2115         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2116         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2117         if (aq_ret) {
2118                 dev_info(&vsi->back->pdev->dev,
2119                          "%s: update vsi failed, aq_err=%d\n",
2120                          __func__, vsi->back->hw.aq.asq_last_status);
2121                 return -ENOENT;
2122         }
2123
2124         return 0;
2125 }
2126
2127 /**
2128  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2129  * @vsi: the vsi being adjusted
2130  *
2131  * Just use the vlan_rx_register() service to put it back to normal
2132  **/
2133 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2134 {
2135         i40e_vlan_stripping_disable(vsi);
2136
2137         vsi->info.pvid = 0;
2138 }
2139
2140 /**
2141  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2142  * @vsi: ptr to the VSI
2143  *
2144  * If this function returns with an error, then it's possible one or
2145  * more of the rings is populated (while the rest are not).  It is the
2146  * callers duty to clean those orphaned rings.
2147  *
2148  * Return 0 on success, negative on failure
2149  **/
2150 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2151 {
2152         int i, err = 0;
2153
2154         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2155                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2156
2157         return err;
2158 }
2159
2160 /**
2161  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2162  * @vsi: ptr to the VSI
2163  *
2164  * Free VSI's transmit software resources
2165  **/
2166 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2167 {
2168         int i;
2169
2170         if (!vsi->tx_rings)
2171                 return;
2172
2173         for (i = 0; i < vsi->num_queue_pairs; i++)
2174                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2175                         i40e_free_tx_resources(vsi->tx_rings[i]);
2176 }
2177
2178 /**
2179  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2180  * @vsi: ptr to the VSI
2181  *
2182  * If this function returns with an error, then it's possible one or
2183  * more of the rings is populated (while the rest are not).  It is the
2184  * callers duty to clean those orphaned rings.
2185  *
2186  * Return 0 on success, negative on failure
2187  **/
2188 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2189 {
2190         int i, err = 0;
2191
2192         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2193                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2194         return err;
2195 }
2196
2197 /**
2198  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2199  * @vsi: ptr to the VSI
2200  *
2201  * Free all receive software resources
2202  **/
2203 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2204 {
2205         int i;
2206
2207         if (!vsi->rx_rings)
2208                 return;
2209
2210         for (i = 0; i < vsi->num_queue_pairs; i++)
2211                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2212                         i40e_free_rx_resources(vsi->rx_rings[i]);
2213 }
2214
2215 /**
2216  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2217  * @ring: The Tx ring to configure
2218  *
2219  * Configure the Tx descriptor ring in the HMC context.
2220  **/
2221 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2222 {
2223         struct i40e_vsi *vsi = ring->vsi;
2224         u16 pf_q = vsi->base_queue + ring->queue_index;
2225         struct i40e_hw *hw = &vsi->back->hw;
2226         struct i40e_hmc_obj_txq tx_ctx;
2227         i40e_status err = 0;
2228         u32 qtx_ctl = 0;
2229
2230         /* some ATR related tx ring init */
2231         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2232                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2233                 ring->atr_count = 0;
2234         } else {
2235                 ring->atr_sample_rate = 0;
2236         }
2237
2238         /* initialize XPS */
2239         if (ring->q_vector && ring->netdev &&
2240             vsi->tc_config.numtc <= 1 &&
2241             !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2242                 netif_set_xps_queue(ring->netdev,
2243                                     &ring->q_vector->affinity_mask,
2244                                     ring->queue_index);
2245
2246         /* clear the context structure first */
2247         memset(&tx_ctx, 0, sizeof(tx_ctx));
2248
2249         tx_ctx.new_context = 1;
2250         tx_ctx.base = (ring->dma / 128);
2251         tx_ctx.qlen = ring->count;
2252         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2253                                                I40E_FLAG_FD_ATR_ENABLED));
2254         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2255         /* FDIR VSI tx ring can still use RS bit and writebacks */
2256         if (vsi->type != I40E_VSI_FDIR)
2257                 tx_ctx.head_wb_ena = 1;
2258         tx_ctx.head_wb_addr = ring->dma +
2259                               (ring->count * sizeof(struct i40e_tx_desc));
2260
2261         /* As part of VSI creation/update, FW allocates certain
2262          * Tx arbitration queue sets for each TC enabled for
2263          * the VSI. The FW returns the handles to these queue
2264          * sets as part of the response buffer to Add VSI,
2265          * Update VSI, etc. AQ commands. It is expected that
2266          * these queue set handles be associated with the Tx
2267          * queues by the driver as part of the TX queue context
2268          * initialization. This has to be done regardless of
2269          * DCB as by default everything is mapped to TC0.
2270          */
2271         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2272         tx_ctx.rdylist_act = 0;
2273
2274         /* clear the context in the HMC */
2275         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2276         if (err) {
2277                 dev_info(&vsi->back->pdev->dev,
2278                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2279                          ring->queue_index, pf_q, err);
2280                 return -ENOMEM;
2281         }
2282
2283         /* set the context in the HMC */
2284         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2285         if (err) {
2286                 dev_info(&vsi->back->pdev->dev,
2287                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2288                          ring->queue_index, pf_q, err);
2289                 return -ENOMEM;
2290         }
2291
2292         /* Now associate this queue with this PCI function */
2293         if (vsi->type == I40E_VSI_VMDQ2)
2294                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2295         else
2296                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2297         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2298                     I40E_QTX_CTL_PF_INDX_MASK);
2299         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2300         i40e_flush(hw);
2301
2302         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2303
2304         /* cache tail off for easier writes later */
2305         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2306
2307         return 0;
2308 }
2309
2310 /**
2311  * i40e_configure_rx_ring - Configure a receive ring context
2312  * @ring: The Rx ring to configure
2313  *
2314  * Configure the Rx descriptor ring in the HMC context.
2315  **/
2316 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2317 {
2318         struct i40e_vsi *vsi = ring->vsi;
2319         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2320         u16 pf_q = vsi->base_queue + ring->queue_index;
2321         struct i40e_hw *hw = &vsi->back->hw;
2322         struct i40e_hmc_obj_rxq rx_ctx;
2323         i40e_status err = 0;
2324
2325         ring->state = 0;
2326
2327         /* clear the context structure first */
2328         memset(&rx_ctx, 0, sizeof(rx_ctx));
2329
2330         ring->rx_buf_len = vsi->rx_buf_len;
2331         ring->rx_hdr_len = vsi->rx_hdr_len;
2332
2333         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2334         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2335
2336         rx_ctx.base = (ring->dma / 128);
2337         rx_ctx.qlen = ring->count;
2338
2339         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2340                 set_ring_16byte_desc_enabled(ring);
2341                 rx_ctx.dsize = 0;
2342         } else {
2343                 rx_ctx.dsize = 1;
2344         }
2345
2346         rx_ctx.dtype = vsi->dtype;
2347         if (vsi->dtype) {
2348                 set_ring_ps_enabled(ring);
2349                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2350                                   I40E_RX_SPLIT_IP      |
2351                                   I40E_RX_SPLIT_TCP_UDP |
2352                                   I40E_RX_SPLIT_SCTP;
2353         } else {
2354                 rx_ctx.hsplit_0 = 0;
2355         }
2356
2357         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2358                                   (chain_len * ring->rx_buf_len));
2359         rx_ctx.tphrdesc_ena = 1;
2360         rx_ctx.tphwdesc_ena = 1;
2361         rx_ctx.tphdata_ena = 1;
2362         rx_ctx.tphhead_ena = 1;
2363         if (hw->revision_id == 0)
2364                 rx_ctx.lrxqthresh = 0;
2365         else
2366                 rx_ctx.lrxqthresh = 2;
2367         rx_ctx.crcstrip = 1;
2368         rx_ctx.l2tsel = 1;
2369         rx_ctx.showiv = 1;
2370         /* set the prefena field to 1 because the manual says to */
2371         rx_ctx.prefena = 1;
2372
2373         /* clear the context in the HMC */
2374         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2375         if (err) {
2376                 dev_info(&vsi->back->pdev->dev,
2377                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2378                          ring->queue_index, pf_q, err);
2379                 return -ENOMEM;
2380         }
2381
2382         /* set the context in the HMC */
2383         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2384         if (err) {
2385                 dev_info(&vsi->back->pdev->dev,
2386                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2387                          ring->queue_index, pf_q, err);
2388                 return -ENOMEM;
2389         }
2390
2391         /* cache tail for quicker writes, and clear the reg before use */
2392         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2393         writel(0, ring->tail);
2394
2395         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2396
2397         return 0;
2398 }
2399
2400 /**
2401  * i40e_vsi_configure_tx - Configure the VSI for Tx
2402  * @vsi: VSI structure describing this set of rings and resources
2403  *
2404  * Configure the Tx VSI for operation.
2405  **/
2406 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2407 {
2408         int err = 0;
2409         u16 i;
2410
2411         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2412                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2413
2414         return err;
2415 }
2416
2417 /**
2418  * i40e_vsi_configure_rx - Configure the VSI for Rx
2419  * @vsi: the VSI being configured
2420  *
2421  * Configure the Rx VSI for operation.
2422  **/
2423 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2424 {
2425         int err = 0;
2426         u16 i;
2427
2428         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2429                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2430                                + ETH_FCS_LEN + VLAN_HLEN;
2431         else
2432                 vsi->max_frame = I40E_RXBUFFER_2048;
2433
2434         /* figure out correct receive buffer length */
2435         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2436                                     I40E_FLAG_RX_PS_ENABLED)) {
2437         case I40E_FLAG_RX_1BUF_ENABLED:
2438                 vsi->rx_hdr_len = 0;
2439                 vsi->rx_buf_len = vsi->max_frame;
2440                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2441                 break;
2442         case I40E_FLAG_RX_PS_ENABLED:
2443                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2444                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2445                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2446                 break;
2447         default:
2448                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2449                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2450                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2451                 break;
2452         }
2453
2454         /* round up for the chip's needs */
2455         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2456                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2457         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2458                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2459
2460         /* set up individual rings */
2461         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2462                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2463
2464         return err;
2465 }
2466
2467 /**
2468  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2469  * @vsi: ptr to the VSI
2470  **/
2471 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2472 {
2473         struct i40e_ring *tx_ring, *rx_ring;
2474         u16 qoffset, qcount;
2475         int i, n;
2476
2477         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2478                 return;
2479
2480         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2481                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2482                         continue;
2483
2484                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2485                 qcount = vsi->tc_config.tc_info[n].qcount;
2486                 for (i = qoffset; i < (qoffset + qcount); i++) {
2487                         rx_ring = vsi->rx_rings[i];
2488                         tx_ring = vsi->tx_rings[i];
2489                         rx_ring->dcb_tc = n;
2490                         tx_ring->dcb_tc = n;
2491                 }
2492         }
2493 }
2494
2495 /**
2496  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2497  * @vsi: ptr to the VSI
2498  **/
2499 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2500 {
2501         if (vsi->netdev)
2502                 i40e_set_rx_mode(vsi->netdev);
2503 }
2504
2505 /**
2506  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2507  * @vsi: Pointer to the targeted VSI
2508  *
2509  * This function replays the hlist on the hw where all the SB Flow Director
2510  * filters were saved.
2511  **/
2512 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2513 {
2514         struct i40e_fdir_filter *filter;
2515         struct i40e_pf *pf = vsi->back;
2516         struct hlist_node *node;
2517
2518         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2519                 return;
2520
2521         hlist_for_each_entry_safe(filter, node,
2522                                   &pf->fdir_filter_list, fdir_node) {
2523                 i40e_add_del_fdir(vsi, filter, true);
2524         }
2525 }
2526
2527 /**
2528  * i40e_vsi_configure - Set up the VSI for action
2529  * @vsi: the VSI being configured
2530  **/
2531 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2532 {
2533         int err;
2534
2535         i40e_set_vsi_rx_mode(vsi);
2536         i40e_restore_vlan(vsi);
2537         i40e_vsi_config_dcb_rings(vsi);
2538         err = i40e_vsi_configure_tx(vsi);
2539         if (!err)
2540                 err = i40e_vsi_configure_rx(vsi);
2541
2542         return err;
2543 }
2544
2545 /**
2546  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2547  * @vsi: the VSI being configured
2548  **/
2549 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2550 {
2551         struct i40e_pf *pf = vsi->back;
2552         struct i40e_q_vector *q_vector;
2553         struct i40e_hw *hw = &pf->hw;
2554         u16 vector;
2555         int i, q;
2556         u32 val;
2557         u32 qp;
2558
2559         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2560          * and PFINT_LNKLSTn registers, e.g.:
2561          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2562          */
2563         qp = vsi->base_queue;
2564         vector = vsi->base_vector;
2565         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2566                 q_vector = vsi->q_vectors[i];
2567                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2568                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2569                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2570                      q_vector->rx.itr);
2571                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2572                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2573                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2574                      q_vector->tx.itr);
2575
2576                 /* Linked list for the queuepairs assigned to this vector */
2577                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2578                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2579                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2580                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2581                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2582                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2583                               (I40E_QUEUE_TYPE_TX
2584                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2585
2586                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2587
2588                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2589                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2590                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2591                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2592                               (I40E_QUEUE_TYPE_RX
2593                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2594
2595                         /* Terminate the linked list */
2596                         if (q == (q_vector->num_ringpairs - 1))
2597                                 val |= (I40E_QUEUE_END_OF_LIST
2598                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2599
2600                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2601                         qp++;
2602                 }
2603         }
2604
2605         i40e_flush(hw);
2606 }
2607
2608 /**
2609  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2610  * @hw: ptr to the hardware info
2611  **/
2612 static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
2613 {
2614         u32 val;
2615
2616         /* clear things first */
2617         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2618         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2619
2620         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2621               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2622               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2623               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2624               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2625               I40E_PFINT_ICR0_ENA_TIMESYNC_MASK      |
2626               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2627               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2628               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2629
2630         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2631
2632         /* SW_ITR_IDX = 0, but don't change INTENA */
2633         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2634                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2635
2636         /* OTHER_ITR_IDX = 0 */
2637         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2638 }
2639
2640 /**
2641  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2642  * @vsi: the VSI being configured
2643  **/
2644 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2645 {
2646         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2647         struct i40e_pf *pf = vsi->back;
2648         struct i40e_hw *hw = &pf->hw;
2649         u32 val;
2650
2651         /* set the ITR configuration */
2652         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2653         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2654         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2655         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2656         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2657         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2658
2659         i40e_enable_misc_int_causes(hw);
2660
2661         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2662         wr32(hw, I40E_PFINT_LNKLST0, 0);
2663
2664         /* Associate the queue pair to the vector and enable the queue int */
2665         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2666               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2667               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2668
2669         wr32(hw, I40E_QINT_RQCTL(0), val);
2670
2671         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2672               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2673               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2674
2675         wr32(hw, I40E_QINT_TQCTL(0), val);
2676         i40e_flush(hw);
2677 }
2678
2679 /**
2680  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2681  * @pf: board private structure
2682  **/
2683 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2684 {
2685         struct i40e_hw *hw = &pf->hw;
2686
2687         wr32(hw, I40E_PFINT_DYN_CTL0,
2688              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2689         i40e_flush(hw);
2690 }
2691
2692 /**
2693  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2694  * @pf: board private structure
2695  **/
2696 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2697 {
2698         struct i40e_hw *hw = &pf->hw;
2699         u32 val;
2700
2701         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2702               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2703               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2704
2705         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2706         i40e_flush(hw);
2707 }
2708
2709 /**
2710  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2711  * @vsi: pointer to a vsi
2712  * @vector: enable a particular Hw Interrupt vector
2713  **/
2714 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2715 {
2716         struct i40e_pf *pf = vsi->back;
2717         struct i40e_hw *hw = &pf->hw;
2718         u32 val;
2719
2720         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2721               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2722               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2723         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2724         /* skip the flush */
2725 }
2726
2727 /**
2728  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2729  * @irq: interrupt number
2730  * @data: pointer to a q_vector
2731  **/
2732 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2733 {
2734         struct i40e_q_vector *q_vector = data;
2735
2736         if (!q_vector->tx.ring && !q_vector->rx.ring)
2737                 return IRQ_HANDLED;
2738
2739         napi_schedule(&q_vector->napi);
2740
2741         return IRQ_HANDLED;
2742 }
2743
2744 /**
2745  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2746  * @vsi: the VSI being configured
2747  * @basename: name for the vector
2748  *
2749  * Allocates MSI-X vectors and requests interrupts from the kernel.
2750  **/
2751 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2752 {
2753         int q_vectors = vsi->num_q_vectors;
2754         struct i40e_pf *pf = vsi->back;
2755         int base = vsi->base_vector;
2756         int rx_int_idx = 0;
2757         int tx_int_idx = 0;
2758         int vector, err;
2759
2760         for (vector = 0; vector < q_vectors; vector++) {
2761                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2762
2763                 if (q_vector->tx.ring && q_vector->rx.ring) {
2764                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2765                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2766                         tx_int_idx++;
2767                 } else if (q_vector->rx.ring) {
2768                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2769                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
2770                 } else if (q_vector->tx.ring) {
2771                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2772                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
2773                 } else {
2774                         /* skip this unused q_vector */
2775                         continue;
2776                 }
2777                 err = request_irq(pf->msix_entries[base + vector].vector,
2778                                   vsi->irq_handler,
2779                                   0,
2780                                   q_vector->name,
2781                                   q_vector);
2782                 if (err) {
2783                         dev_info(&pf->pdev->dev,
2784                                  "%s: request_irq failed, error: %d\n",
2785                                  __func__, err);
2786                         goto free_queue_irqs;
2787                 }
2788                 /* assign the mask for this irq */
2789                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2790                                       &q_vector->affinity_mask);
2791         }
2792
2793         vsi->irqs_ready = true;
2794         return 0;
2795
2796 free_queue_irqs:
2797         while (vector) {
2798                 vector--;
2799                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2800                                       NULL);
2801                 free_irq(pf->msix_entries[base + vector].vector,
2802                          &(vsi->q_vectors[vector]));
2803         }
2804         return err;
2805 }
2806
2807 /**
2808  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
2809  * @vsi: the VSI being un-configured
2810  **/
2811 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
2812 {
2813         struct i40e_pf *pf = vsi->back;
2814         struct i40e_hw *hw = &pf->hw;
2815         int base = vsi->base_vector;
2816         int i;
2817
2818         for (i = 0; i < vsi->num_queue_pairs; i++) {
2819                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
2820                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
2821         }
2822
2823         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2824                 for (i = vsi->base_vector;
2825                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2826                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
2827
2828                 i40e_flush(hw);
2829                 for (i = 0; i < vsi->num_q_vectors; i++)
2830                         synchronize_irq(pf->msix_entries[i + base].vector);
2831         } else {
2832                 /* Legacy and MSI mode - this stops all interrupt handling */
2833                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
2834                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
2835                 i40e_flush(hw);
2836                 synchronize_irq(pf->pdev->irq);
2837         }
2838 }
2839
2840 /**
2841  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
2842  * @vsi: the VSI being configured
2843  **/
2844 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
2845 {
2846         struct i40e_pf *pf = vsi->back;
2847         int i;
2848
2849         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2850                 for (i = vsi->base_vector;
2851                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2852                         i40e_irq_dynamic_enable(vsi, i);
2853         } else {
2854                 i40e_irq_dynamic_enable_icr0(pf);
2855         }
2856
2857         i40e_flush(&pf->hw);
2858         return 0;
2859 }
2860
2861 /**
2862  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
2863  * @pf: board private structure
2864  **/
2865 static void i40e_stop_misc_vector(struct i40e_pf *pf)
2866 {
2867         /* Disable ICR 0 */
2868         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
2869         i40e_flush(&pf->hw);
2870 }
2871
2872 /**
2873  * i40e_intr - MSI/Legacy and non-queue interrupt handler
2874  * @irq: interrupt number
2875  * @data: pointer to a q_vector
2876  *
2877  * This is the handler used for all MSI/Legacy interrupts, and deals
2878  * with both queue and non-queue interrupts.  This is also used in
2879  * MSIX mode to handle the non-queue interrupts.
2880  **/
2881 static irqreturn_t i40e_intr(int irq, void *data)
2882 {
2883         struct i40e_pf *pf = (struct i40e_pf *)data;
2884         struct i40e_hw *hw = &pf->hw;
2885         irqreturn_t ret = IRQ_NONE;
2886         u32 icr0, icr0_remaining;
2887         u32 val, ena_mask;
2888
2889         icr0 = rd32(hw, I40E_PFINT_ICR0);
2890         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
2891
2892         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
2893         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
2894                 goto enable_intr;
2895
2896         /* if interrupt but no bits showing, must be SWINT */
2897         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
2898             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
2899                 pf->sw_int_count++;
2900
2901         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
2902         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
2903
2904                 /* temporarily disable queue cause for NAPI processing */
2905                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
2906                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
2907                 wr32(hw, I40E_QINT_RQCTL(0), qval);
2908
2909                 qval = rd32(hw, I40E_QINT_TQCTL(0));
2910                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
2911                 wr32(hw, I40E_QINT_TQCTL(0), qval);
2912
2913                 if (!test_bit(__I40E_DOWN, &pf->state))
2914                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
2915         }
2916
2917         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
2918                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2919                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
2920         }
2921
2922         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
2923                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
2924                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
2925         }
2926
2927         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
2928                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
2929                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
2930         }
2931
2932         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
2933                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
2934                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
2935                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
2936                 val = rd32(hw, I40E_GLGEN_RSTAT);
2937                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
2938                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
2939                 if (val == I40E_RESET_CORER) {
2940                         pf->corer_count++;
2941                 } else if (val == I40E_RESET_GLOBR) {
2942                         pf->globr_count++;
2943                 } else if (val == I40E_RESET_EMPR) {
2944                         pf->empr_count++;
2945                         set_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
2946                 }
2947         }
2948
2949         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
2950                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
2951                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
2952         }
2953
2954         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
2955                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
2956
2957                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
2958                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2959                         i40e_ptp_tx_hwtstamp(pf);
2960                 }
2961         }
2962
2963         /* If a critical error is pending we have no choice but to reset the
2964          * device.
2965          * Report and mask out any remaining unexpected interrupts.
2966          */
2967         icr0_remaining = icr0 & ena_mask;
2968         if (icr0_remaining) {
2969                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
2970                          icr0_remaining);
2971                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
2972                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
2973                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
2974                         dev_info(&pf->pdev->dev, "device will be reset\n");
2975                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2976                         i40e_service_event_schedule(pf);
2977                 }
2978                 ena_mask &= ~icr0_remaining;
2979         }
2980         ret = IRQ_HANDLED;
2981
2982 enable_intr:
2983         /* re-enable interrupt causes */
2984         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
2985         if (!test_bit(__I40E_DOWN, &pf->state)) {
2986                 i40e_service_event_schedule(pf);
2987                 i40e_irq_dynamic_enable_icr0(pf);
2988         }
2989
2990         return ret;
2991 }
2992
2993 /**
2994  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
2995  * @tx_ring:  tx ring to clean
2996  * @budget:   how many cleans we're allowed
2997  *
2998  * Returns true if there's any budget left (e.g. the clean is finished)
2999  **/
3000 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3001 {
3002         struct i40e_vsi *vsi = tx_ring->vsi;
3003         u16 i = tx_ring->next_to_clean;
3004         struct i40e_tx_buffer *tx_buf;
3005         struct i40e_tx_desc *tx_desc;
3006
3007         tx_buf = &tx_ring->tx_bi[i];
3008         tx_desc = I40E_TX_DESC(tx_ring, i);
3009         i -= tx_ring->count;
3010
3011         do {
3012                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3013
3014                 /* if next_to_watch is not set then there is no work pending */
3015                 if (!eop_desc)
3016                         break;
3017
3018                 /* prevent any other reads prior to eop_desc */
3019                 read_barrier_depends();
3020
3021                 /* if the descriptor isn't done, no work yet to do */
3022                 if (!(eop_desc->cmd_type_offset_bsz &
3023                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3024                         break;
3025
3026                 /* clear next_to_watch to prevent false hangs */
3027                 tx_buf->next_to_watch = NULL;
3028
3029                 /* unmap skb header data */
3030                 dma_unmap_single(tx_ring->dev,
3031                                  dma_unmap_addr(tx_buf, dma),
3032                                  dma_unmap_len(tx_buf, len),
3033                                  DMA_TO_DEVICE);
3034
3035                 dma_unmap_len_set(tx_buf, len, 0);
3036
3037
3038                 /* move to the next desc and buffer to clean */
3039                 tx_buf++;
3040                 tx_desc++;
3041                 i++;
3042                 if (unlikely(!i)) {
3043                         i -= tx_ring->count;
3044                         tx_buf = tx_ring->tx_bi;
3045                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3046                 }
3047
3048                 /* update budget accounting */
3049                 budget--;
3050         } while (likely(budget));
3051
3052         i += tx_ring->count;
3053         tx_ring->next_to_clean = i;
3054
3055         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3056                 i40e_irq_dynamic_enable(vsi,
3057                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3058         }
3059         return budget > 0;
3060 }
3061
3062 /**
3063  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3064  * @irq: interrupt number
3065  * @data: pointer to a q_vector
3066  **/
3067 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3068 {
3069         struct i40e_q_vector *q_vector = data;
3070         struct i40e_vsi *vsi;
3071
3072         if (!q_vector->tx.ring)
3073                 return IRQ_HANDLED;
3074
3075         vsi = q_vector->tx.ring->vsi;
3076         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3077
3078         return IRQ_HANDLED;
3079 }
3080
3081 /**
3082  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3083  * @vsi: the VSI being configured
3084  * @v_idx: vector index
3085  * @qp_idx: queue pair index
3086  **/
3087 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3088 {
3089         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3090         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3091         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3092
3093         tx_ring->q_vector = q_vector;
3094         tx_ring->next = q_vector->tx.ring;
3095         q_vector->tx.ring = tx_ring;
3096         q_vector->tx.count++;
3097
3098         rx_ring->q_vector = q_vector;
3099         rx_ring->next = q_vector->rx.ring;
3100         q_vector->rx.ring = rx_ring;
3101         q_vector->rx.count++;
3102 }
3103
3104 /**
3105  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3106  * @vsi: the VSI being configured
3107  *
3108  * This function maps descriptor rings to the queue-specific vectors
3109  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3110  * one vector per queue pair, but on a constrained vector budget, we
3111  * group the queue pairs as "efficiently" as possible.
3112  **/
3113 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3114 {
3115         int qp_remaining = vsi->num_queue_pairs;
3116         int q_vectors = vsi->num_q_vectors;
3117         int num_ringpairs;
3118         int v_start = 0;
3119         int qp_idx = 0;
3120
3121         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3122          * group them so there are multiple queues per vector.
3123          */
3124         for (; v_start < q_vectors && qp_remaining; v_start++) {
3125                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3126
3127                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3128
3129                 q_vector->num_ringpairs = num_ringpairs;
3130
3131                 q_vector->rx.count = 0;
3132                 q_vector->tx.count = 0;
3133                 q_vector->rx.ring = NULL;
3134                 q_vector->tx.ring = NULL;
3135
3136                 while (num_ringpairs--) {
3137                         map_vector_to_qp(vsi, v_start, qp_idx);
3138                         qp_idx++;
3139                         qp_remaining--;
3140                 }
3141         }
3142 }
3143
3144 /**
3145  * i40e_vsi_request_irq - Request IRQ from the OS
3146  * @vsi: the VSI being configured
3147  * @basename: name for the vector
3148  **/
3149 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3150 {
3151         struct i40e_pf *pf = vsi->back;
3152         int err;
3153
3154         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3155                 err = i40e_vsi_request_irq_msix(vsi, basename);
3156         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3157                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3158                                   pf->misc_int_name, pf);
3159         else
3160                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3161                                   pf->misc_int_name, pf);
3162
3163         if (err)
3164                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3165
3166         return err;
3167 }
3168
3169 #ifdef CONFIG_NET_POLL_CONTROLLER
3170 /**
3171  * i40e_netpoll - A Polling 'interrupt'handler
3172  * @netdev: network interface device structure
3173  *
3174  * This is used by netconsole to send skbs without having to re-enable
3175  * interrupts.  It's not called while the normal interrupt routine is executing.
3176  **/
3177 static void i40e_netpoll(struct net_device *netdev)
3178 {
3179         struct i40e_netdev_priv *np = netdev_priv(netdev);
3180         struct i40e_vsi *vsi = np->vsi;
3181         struct i40e_pf *pf = vsi->back;
3182         int i;
3183
3184         /* if interface is down do nothing */
3185         if (test_bit(__I40E_DOWN, &vsi->state))
3186                 return;
3187
3188         pf->flags |= I40E_FLAG_IN_NETPOLL;
3189         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3190                 for (i = 0; i < vsi->num_q_vectors; i++)
3191                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3192         } else {
3193                 i40e_intr(pf->pdev->irq, netdev);
3194         }
3195         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3196 }
3197 #endif
3198
3199 /**
3200  * i40e_vsi_control_tx - Start or stop a VSI's rings
3201  * @vsi: the VSI being configured
3202  * @enable: start or stop the rings
3203  **/
3204 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3205 {
3206         struct i40e_pf *pf = vsi->back;
3207         struct i40e_hw *hw = &pf->hw;
3208         int i, j, pf_q;
3209         u32 tx_reg;
3210
3211         pf_q = vsi->base_queue;
3212         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3213
3214                 /* warn the TX unit of coming changes */
3215                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3216                 if (!enable)
3217                         udelay(10);
3218
3219                 for (j = 0; j < 50; j++) {
3220                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3221                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3222                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3223                                 break;
3224                         usleep_range(1000, 2000);
3225                 }
3226                 /* Skip if the queue is already in the requested state */
3227                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3228                         continue;
3229
3230                 /* turn on/off the queue */
3231                 if (enable) {
3232                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3233                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3234                 } else {
3235                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3236                 }
3237
3238                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3239
3240                 /* wait for the change to finish */
3241                 for (j = 0; j < 10; j++) {
3242                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3243                         if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3244                                 break;
3245
3246                         udelay(10);
3247                 }
3248                 if (j >= 10) {
3249                         dev_info(&pf->pdev->dev, "Tx ring %d %sable timeout\n",
3250                                  pf_q, (enable ? "en" : "dis"));
3251                         return -ETIMEDOUT;
3252                 }
3253         }
3254
3255         if (hw->revision_id == 0)
3256                 mdelay(50);
3257
3258         return 0;
3259 }
3260
3261 /**
3262  * i40e_vsi_control_rx - Start or stop a VSI's rings
3263  * @vsi: the VSI being configured
3264  * @enable: start or stop the rings
3265  **/
3266 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3267 {
3268         struct i40e_pf *pf = vsi->back;
3269         struct i40e_hw *hw = &pf->hw;
3270         int i, j, pf_q;
3271         u32 rx_reg;
3272
3273         pf_q = vsi->base_queue;
3274         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3275                 for (j = 0; j < 50; j++) {
3276                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3277                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3278                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3279                                 break;
3280                         usleep_range(1000, 2000);
3281                 }
3282
3283                 /* Skip if the queue is already in the requested state */
3284                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3285                         continue;
3286
3287                 /* turn on/off the queue */
3288                 if (enable)
3289                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3290                 else
3291                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3292                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3293
3294                 /* wait for the change to finish */
3295                 for (j = 0; j < 10; j++) {
3296                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3297
3298                         if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3299                                 break;
3300
3301                         udelay(10);
3302                 }
3303                 if (j >= 10) {
3304                         dev_info(&pf->pdev->dev, "Rx ring %d %sable timeout\n",
3305                                  pf_q, (enable ? "en" : "dis"));
3306                         return -ETIMEDOUT;
3307                 }
3308         }
3309
3310         return 0;
3311 }
3312
3313 /**
3314  * i40e_vsi_control_rings - Start or stop a VSI's rings
3315  * @vsi: the VSI being configured
3316  * @enable: start or stop the rings
3317  **/
3318 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3319 {
3320         int ret = 0;
3321
3322         /* do rx first for enable and last for disable */
3323         if (request) {
3324                 ret = i40e_vsi_control_rx(vsi, request);
3325                 if (ret)
3326                         return ret;
3327                 ret = i40e_vsi_control_tx(vsi, request);
3328         } else {
3329                 /* Ignore return value, we need to shutdown whatever we can */
3330                 i40e_vsi_control_tx(vsi, request);
3331                 i40e_vsi_control_rx(vsi, request);
3332         }
3333
3334         return ret;
3335 }
3336
3337 /**
3338  * i40e_vsi_free_irq - Free the irq association with the OS
3339  * @vsi: the VSI being configured
3340  **/
3341 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3342 {
3343         struct i40e_pf *pf = vsi->back;
3344         struct i40e_hw *hw = &pf->hw;
3345         int base = vsi->base_vector;
3346         u32 val, qp;
3347         int i;
3348
3349         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3350                 if (!vsi->q_vectors)
3351                         return;
3352
3353                 if (!vsi->irqs_ready)
3354                         return;
3355
3356                 vsi->irqs_ready = false;
3357                 for (i = 0; i < vsi->num_q_vectors; i++) {
3358                         u16 vector = i + base;
3359
3360                         /* free only the irqs that were actually requested */
3361                         if (!vsi->q_vectors[i] ||
3362                             !vsi->q_vectors[i]->num_ringpairs)
3363                                 continue;
3364
3365                         /* clear the affinity_mask in the IRQ descriptor */
3366                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3367                                               NULL);
3368                         free_irq(pf->msix_entries[vector].vector,
3369                                  vsi->q_vectors[i]);
3370
3371                         /* Tear down the interrupt queue link list
3372                          *
3373                          * We know that they come in pairs and always
3374                          * the Rx first, then the Tx.  To clear the
3375                          * link list, stick the EOL value into the
3376                          * next_q field of the registers.
3377                          */
3378                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3379                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3380                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3381                         val |= I40E_QUEUE_END_OF_LIST
3382                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3383                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3384
3385                         while (qp != I40E_QUEUE_END_OF_LIST) {
3386                                 u32 next;
3387
3388                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3389
3390                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3391                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3392                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3393                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3394
3395                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3396                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3397
3398                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3399
3400                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3401
3402                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3403                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3404
3405                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3406                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3407                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3408                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3409
3410                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3411                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3412
3413                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3414                                 qp = next;
3415                         }
3416                 }
3417         } else {
3418                 free_irq(pf->pdev->irq, pf);
3419
3420                 val = rd32(hw, I40E_PFINT_LNKLST0);
3421                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3422                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3423                 val |= I40E_QUEUE_END_OF_LIST
3424                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3425                 wr32(hw, I40E_PFINT_LNKLST0, val);
3426
3427                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3428                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3429                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3430                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3431                          I40E_QINT_RQCTL_INTEVENT_MASK);
3432
3433                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3434                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3435
3436                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3437
3438                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3439
3440                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3441                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3442                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3443                          I40E_QINT_TQCTL_INTEVENT_MASK);
3444
3445                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3446                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3447
3448                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3449         }
3450 }
3451
3452 /**
3453  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3454  * @vsi: the VSI being configured
3455  * @v_idx: Index of vector to be freed
3456  *
3457  * This function frees the memory allocated to the q_vector.  In addition if
3458  * NAPI is enabled it will delete any references to the NAPI struct prior
3459  * to freeing the q_vector.
3460  **/
3461 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3462 {
3463         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3464         struct i40e_ring *ring;
3465
3466         if (!q_vector)
3467                 return;
3468
3469         /* disassociate q_vector from rings */
3470         i40e_for_each_ring(ring, q_vector->tx)
3471                 ring->q_vector = NULL;
3472
3473         i40e_for_each_ring(ring, q_vector->rx)
3474                 ring->q_vector = NULL;
3475
3476         /* only VSI w/ an associated netdev is set up w/ NAPI */
3477         if (vsi->netdev)
3478                 netif_napi_del(&q_vector->napi);
3479
3480         vsi->q_vectors[v_idx] = NULL;
3481
3482         kfree_rcu(q_vector, rcu);
3483 }
3484
3485 /**
3486  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3487  * @vsi: the VSI being un-configured
3488  *
3489  * This frees the memory allocated to the q_vectors and
3490  * deletes references to the NAPI struct.
3491  **/
3492 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3493 {
3494         int v_idx;
3495
3496         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3497                 i40e_free_q_vector(vsi, v_idx);
3498 }
3499
3500 /**
3501  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3502  * @pf: board private structure
3503  **/
3504 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3505 {
3506         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3507         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3508                 pci_disable_msix(pf->pdev);
3509                 kfree(pf->msix_entries);
3510                 pf->msix_entries = NULL;
3511         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3512                 pci_disable_msi(pf->pdev);
3513         }
3514         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3515 }
3516
3517 /**
3518  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3519  * @pf: board private structure
3520  *
3521  * We go through and clear interrupt specific resources and reset the structure
3522  * to pre-load conditions
3523  **/
3524 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3525 {
3526         int i;
3527
3528         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3529         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
3530                 if (pf->vsi[i])
3531                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3532         i40e_reset_interrupt_capability(pf);
3533 }
3534
3535 /**
3536  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3537  * @vsi: the VSI being configured
3538  **/
3539 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3540 {
3541         int q_idx;
3542
3543         if (!vsi->netdev)
3544                 return;
3545
3546         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3547                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3548 }
3549
3550 /**
3551  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3552  * @vsi: the VSI being configured
3553  **/
3554 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3555 {
3556         int q_idx;
3557
3558         if (!vsi->netdev)
3559                 return;
3560
3561         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3562                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3563 }
3564
3565 /**
3566  * i40e_vsi_close - Shut down a VSI
3567  * @vsi: the vsi to be quelled
3568  **/
3569 static void i40e_vsi_close(struct i40e_vsi *vsi)
3570 {
3571         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3572                 i40e_down(vsi);
3573         i40e_vsi_free_irq(vsi);
3574         i40e_vsi_free_tx_resources(vsi);
3575         i40e_vsi_free_rx_resources(vsi);
3576 }
3577
3578 /**
3579  * i40e_quiesce_vsi - Pause a given VSI
3580  * @vsi: the VSI being paused
3581  **/
3582 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3583 {
3584         if (test_bit(__I40E_DOWN, &vsi->state))
3585                 return;
3586
3587         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3588         if (vsi->netdev && netif_running(vsi->netdev)) {
3589                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3590         } else {
3591                 i40e_vsi_close(vsi);
3592         }
3593 }
3594
3595 /**
3596  * i40e_unquiesce_vsi - Resume a given VSI
3597  * @vsi: the VSI being resumed
3598  **/
3599 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3600 {
3601         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3602                 return;
3603
3604         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3605         if (vsi->netdev && netif_running(vsi->netdev))
3606                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3607         else
3608                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
3609 }
3610
3611 /**
3612  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3613  * @pf: the PF
3614  **/
3615 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3616 {
3617         int v;
3618
3619         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3620                 if (pf->vsi[v])
3621                         i40e_quiesce_vsi(pf->vsi[v]);
3622         }
3623 }
3624
3625 /**
3626  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3627  * @pf: the PF
3628  **/
3629 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3630 {
3631         int v;
3632
3633         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3634                 if (pf->vsi[v])
3635                         i40e_unquiesce_vsi(pf->vsi[v]);
3636         }
3637 }
3638
3639 /**
3640  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
3641  * @dcbcfg: the corresponding DCBx configuration structure
3642  *
3643  * Return the number of TCs from given DCBx configuration
3644  **/
3645 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
3646 {
3647         u8 num_tc = 0;
3648         int i;
3649
3650         /* Scan the ETS Config Priority Table to find
3651          * traffic class enabled for a given priority
3652          * and use the traffic class index to get the
3653          * number of traffic classes enabled
3654          */
3655         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3656                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
3657                         num_tc = dcbcfg->etscfg.prioritytable[i];
3658         }
3659
3660         /* Traffic class index starts from zero so
3661          * increment to return the actual count
3662          */
3663         return num_tc + 1;
3664 }
3665
3666 /**
3667  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
3668  * @dcbcfg: the corresponding DCBx configuration structure
3669  *
3670  * Query the current DCB configuration and return the number of
3671  * traffic classes enabled from the given DCBX config
3672  **/
3673 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
3674 {
3675         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
3676         u8 enabled_tc = 1;
3677         u8 i;
3678
3679         for (i = 0; i < num_tc; i++)
3680                 enabled_tc |= 1 << i;
3681
3682         return enabled_tc;
3683 }
3684
3685 /**
3686  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
3687  * @pf: PF being queried
3688  *
3689  * Return number of traffic classes enabled for the given PF
3690  **/
3691 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
3692 {
3693         struct i40e_hw *hw = &pf->hw;
3694         u8 i, enabled_tc;
3695         u8 num_tc = 0;
3696         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3697
3698         /* If DCB is not enabled then always in single TC */
3699         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3700                 return 1;
3701
3702         /* MFP mode return count of enabled TCs for this PF */
3703         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3704                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3705                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3706                         if (enabled_tc & (1 << i))
3707                                 num_tc++;
3708                 }
3709                 return num_tc;
3710         }
3711
3712         /* SFP mode will be enabled for all TCs on port */
3713         return i40e_dcb_get_num_tc(dcbcfg);
3714 }
3715
3716 /**
3717  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
3718  * @pf: PF being queried
3719  *
3720  * Return a bitmap for first enabled traffic class for this PF.
3721  **/
3722 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
3723 {
3724         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3725         u8 i = 0;
3726
3727         if (!enabled_tc)
3728                 return 0x1; /* TC0 */
3729
3730         /* Find the first enabled TC */
3731         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3732                 if (enabled_tc & (1 << i))
3733                         break;
3734         }
3735
3736         return 1 << i;
3737 }
3738
3739 /**
3740  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
3741  * @pf: PF being queried
3742  *
3743  * Return a bitmap for enabled traffic classes for this PF.
3744  **/
3745 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
3746 {
3747         /* If DCB is not enabled for this PF then just return default TC */
3748         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3749                 return i40e_pf_get_default_tc(pf);
3750
3751         /* MFP mode will have enabled TCs set by FW */
3752         if (pf->flags & I40E_FLAG_MFP_ENABLED)
3753                 return pf->hw.func_caps.enabled_tcmap;
3754
3755         /* SFP mode we want PF to be enabled for all TCs */
3756         return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
3757 }
3758
3759 /**
3760  * i40e_vsi_get_bw_info - Query VSI BW Information
3761  * @vsi: the VSI being queried
3762  *
3763  * Returns 0 on success, negative value on failure
3764  **/
3765 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
3766 {
3767         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
3768         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
3769         struct i40e_pf *pf = vsi->back;
3770         struct i40e_hw *hw = &pf->hw;
3771         i40e_status aq_ret;
3772         u32 tc_bw_max;
3773         int i;
3774
3775         /* Get the VSI level BW configuration */
3776         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
3777         if (aq_ret) {
3778                 dev_info(&pf->pdev->dev,
3779                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
3780                          aq_ret, pf->hw.aq.asq_last_status);
3781                 return -EINVAL;
3782         }
3783
3784         /* Get the VSI level BW configuration per TC */
3785         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
3786                                                   NULL);
3787         if (aq_ret) {
3788                 dev_info(&pf->pdev->dev,
3789                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
3790                          aq_ret, pf->hw.aq.asq_last_status);
3791                 return -EINVAL;
3792         }
3793
3794         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
3795                 dev_info(&pf->pdev->dev,
3796                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
3797                          bw_config.tc_valid_bits,
3798                          bw_ets_config.tc_valid_bits);
3799                 /* Still continuing */
3800         }
3801
3802         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
3803         vsi->bw_max_quanta = bw_config.max_bw;
3804         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
3805                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
3806         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3807                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
3808                 vsi->bw_ets_limit_credits[i] =
3809                                         le16_to_cpu(bw_ets_config.credits[i]);
3810                 /* 3 bits out of 4 for each TC */
3811                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
3812         }
3813
3814         return 0;
3815 }
3816
3817 /**
3818  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
3819  * @vsi: the VSI being configured
3820  * @enabled_tc: TC bitmap
3821  * @bw_credits: BW shared credits per TC
3822  *
3823  * Returns 0 on success, negative value on failure
3824  **/
3825 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
3826                                        u8 *bw_share)
3827 {
3828         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
3829         i40e_status aq_ret;
3830         int i;
3831
3832         bw_data.tc_valid_bits = enabled_tc;
3833         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3834                 bw_data.tc_bw_credits[i] = bw_share[i];
3835
3836         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
3837                                           NULL);
3838         if (aq_ret) {
3839                 dev_info(&vsi->back->pdev->dev,
3840                          "AQ command Config VSI BW allocation per TC failed = %d\n",
3841                          vsi->back->hw.aq.asq_last_status);
3842                 return -EINVAL;
3843         }
3844
3845         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3846                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
3847
3848         return 0;
3849 }
3850
3851 /**
3852  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
3853  * @vsi: the VSI being configured
3854  * @enabled_tc: TC map to be enabled
3855  *
3856  **/
3857 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3858 {
3859         struct net_device *netdev = vsi->netdev;
3860         struct i40e_pf *pf = vsi->back;
3861         struct i40e_hw *hw = &pf->hw;
3862         u8 netdev_tc = 0;
3863         int i;
3864         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3865
3866         if (!netdev)
3867                 return;
3868
3869         if (!enabled_tc) {
3870                 netdev_reset_tc(netdev);
3871                 return;
3872         }
3873
3874         /* Set up actual enabled TCs on the VSI */
3875         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
3876                 return;
3877
3878         /* set per TC queues for the VSI */
3879         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3880                 /* Only set TC queues for enabled tcs
3881                  *
3882                  * e.g. For a VSI that has TC0 and TC3 enabled the
3883                  * enabled_tc bitmap would be 0x00001001; the driver
3884                  * will set the numtc for netdev as 2 that will be
3885                  * referenced by the netdev layer as TC 0 and 1.
3886                  */
3887                 if (vsi->tc_config.enabled_tc & (1 << i))
3888                         netdev_set_tc_queue(netdev,
3889                                         vsi->tc_config.tc_info[i].netdev_tc,
3890                                         vsi->tc_config.tc_info[i].qcount,
3891                                         vsi->tc_config.tc_info[i].qoffset);
3892         }
3893
3894         /* Assign UP2TC map for the VSI */
3895         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3896                 /* Get the actual TC# for the UP */
3897                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
3898                 /* Get the mapped netdev TC# for the UP */
3899                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
3900                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
3901         }
3902 }
3903
3904 /**
3905  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
3906  * @vsi: the VSI being configured
3907  * @ctxt: the ctxt buffer returned from AQ VSI update param command
3908  **/
3909 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
3910                                       struct i40e_vsi_context *ctxt)
3911 {
3912         /* copy just the sections touched not the entire info
3913          * since not all sections are valid as returned by
3914          * update vsi params
3915          */
3916         vsi->info.mapping_flags = ctxt->info.mapping_flags;
3917         memcpy(&vsi->info.queue_mapping,
3918                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
3919         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
3920                sizeof(vsi->info.tc_mapping));
3921 }
3922
3923 /**
3924  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
3925  * @vsi: VSI to be configured
3926  * @enabled_tc: TC bitmap
3927  *
3928  * This configures a particular VSI for TCs that are mapped to the
3929  * given TC bitmap. It uses default bandwidth share for TCs across
3930  * VSIs to configure TC for a particular VSI.
3931  *
3932  * NOTE:
3933  * It is expected that the VSI queues have been quisced before calling
3934  * this function.
3935  **/
3936 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3937 {
3938         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
3939         struct i40e_vsi_context ctxt;
3940         int ret = 0;
3941         int i;
3942
3943         /* Check if enabled_tc is same as existing or new TCs */
3944         if (vsi->tc_config.enabled_tc == enabled_tc)
3945                 return ret;
3946
3947         /* Enable ETS TCs with equal BW Share for now across all VSIs */
3948         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3949                 if (enabled_tc & (1 << i))
3950                         bw_share[i] = 1;
3951         }
3952
3953         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
3954         if (ret) {
3955                 dev_info(&vsi->back->pdev->dev,
3956                          "Failed configuring TC map %d for VSI %d\n",
3957                          enabled_tc, vsi->seid);
3958                 goto out;
3959         }
3960
3961         /* Update Queue Pairs Mapping for currently enabled UPs */
3962         ctxt.seid = vsi->seid;
3963         ctxt.pf_num = vsi->back->hw.pf_id;
3964         ctxt.vf_num = 0;
3965         ctxt.uplink_seid = vsi->uplink_seid;
3966         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
3967         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
3968
3969         /* Update the VSI after updating the VSI queue-mapping information */
3970         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
3971         if (ret) {
3972                 dev_info(&vsi->back->pdev->dev,
3973                          "update vsi failed, aq_err=%d\n",
3974                          vsi->back->hw.aq.asq_last_status);
3975                 goto out;
3976         }
3977         /* update the local VSI info with updated queue map */
3978         i40e_vsi_update_queue_map(vsi, &ctxt);
3979         vsi->info.valid_sections = 0;
3980
3981         /* Update current VSI BW information */
3982         ret = i40e_vsi_get_bw_info(vsi);
3983         if (ret) {
3984                 dev_info(&vsi->back->pdev->dev,
3985                          "Failed updating vsi bw info, aq_err=%d\n",
3986                          vsi->back->hw.aq.asq_last_status);
3987                 goto out;
3988         }
3989
3990         /* Update the netdev TC setup */
3991         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
3992 out:
3993         return ret;
3994 }
3995
3996 /**
3997  * i40e_veb_config_tc - Configure TCs for given VEB
3998  * @veb: given VEB
3999  * @enabled_tc: TC bitmap
4000  *
4001  * Configures given TC bitmap for VEB (switching) element
4002  **/
4003 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4004 {
4005         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4006         struct i40e_pf *pf = veb->pf;
4007         int ret = 0;
4008         int i;
4009
4010         /* No TCs or already enabled TCs just return */
4011         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4012                 return ret;
4013
4014         bw_data.tc_valid_bits = enabled_tc;
4015         /* bw_data.absolute_credits is not set (relative) */
4016
4017         /* Enable ETS TCs with equal BW Share for now */
4018         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4019                 if (enabled_tc & (1 << i))
4020                         bw_data.tc_bw_share_credits[i] = 1;
4021         }
4022
4023         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4024                                                    &bw_data, NULL);
4025         if (ret) {
4026                 dev_info(&pf->pdev->dev,
4027                          "veb bw config failed, aq_err=%d\n",
4028                          pf->hw.aq.asq_last_status);
4029                 goto out;
4030         }
4031
4032         /* Update the BW information */
4033         ret = i40e_veb_get_bw_info(veb);
4034         if (ret) {
4035                 dev_info(&pf->pdev->dev,
4036                          "Failed getting veb bw config, aq_err=%d\n",
4037                          pf->hw.aq.asq_last_status);
4038         }
4039
4040 out:
4041         return ret;
4042 }
4043
4044 #ifdef CONFIG_I40E_DCB
4045 /**
4046  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4047  * @pf: PF struct
4048  *
4049  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4050  * the caller would've quiesce all the VSIs before calling
4051  * this function
4052  **/
4053 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4054 {
4055         u8 tc_map = 0;
4056         int ret;
4057         u8 v;
4058
4059         /* Enable the TCs available on PF to all VEBs */
4060         tc_map = i40e_pf_get_tc_map(pf);
4061         for (v = 0; v < I40E_MAX_VEB; v++) {
4062                 if (!pf->veb[v])
4063                         continue;
4064                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4065                 if (ret) {
4066                         dev_info(&pf->pdev->dev,
4067                                  "Failed configuring TC for VEB seid=%d\n",
4068                                  pf->veb[v]->seid);
4069                         /* Will try to configure as many components */
4070                 }
4071         }
4072
4073         /* Update each VSI */
4074         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4075                 if (!pf->vsi[v])
4076                         continue;
4077
4078                 /* - Enable all TCs for the LAN VSI
4079                  * - For all others keep them at TC0 for now
4080                  */
4081                 if (v == pf->lan_vsi)
4082                         tc_map = i40e_pf_get_tc_map(pf);
4083                 else
4084                         tc_map = i40e_pf_get_default_tc(pf);
4085
4086                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4087                 if (ret) {
4088                         dev_info(&pf->pdev->dev,
4089                                  "Failed configuring TC for VSI seid=%d\n",
4090                                  pf->vsi[v]->seid);
4091                         /* Will try to configure as many components */
4092                 } else {
4093                         /* Re-configure VSI vectors based on updated TC map */
4094                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4095                         if (pf->vsi[v]->netdev)
4096                                 i40e_dcbnl_set_all(pf->vsi[v]);
4097                 }
4098         }
4099 }
4100
4101 /**
4102  * i40e_init_pf_dcb - Initialize DCB configuration
4103  * @pf: PF being configured
4104  *
4105  * Query the current DCB configuration and cache it
4106  * in the hardware structure
4107  **/
4108 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4109 {
4110         struct i40e_hw *hw = &pf->hw;
4111         int err = 0;
4112
4113         if (pf->hw.func_caps.npar_enable)
4114                 goto out;
4115
4116         /* Get the initial DCB configuration */
4117         err = i40e_init_dcb(hw);
4118         if (!err) {
4119                 /* Device/Function is not DCBX capable */
4120                 if ((!hw->func_caps.dcb) ||
4121                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4122                         dev_info(&pf->pdev->dev,
4123                                  "DCBX offload is not supported or is disabled for this PF.\n");
4124
4125                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4126                                 goto out;
4127
4128                 } else {
4129                         /* When status is not DISABLED then DCBX in FW */
4130                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4131                                        DCB_CAP_DCBX_VER_IEEE;
4132                         pf->flags |= I40E_FLAG_DCB_ENABLED;
4133                 }
4134         } else {
4135                 dev_info(&pf->pdev->dev, "AQ Querying DCB configuration failed: %d\n",
4136                          pf->hw.aq.asq_last_status);
4137         }
4138
4139 out:
4140         return err;
4141 }
4142 #endif /* CONFIG_I40E_DCB */
4143 #define SPEED_SIZE 14
4144 #define FC_SIZE 8
4145 /**
4146  * i40e_print_link_message - print link up or down
4147  * @vsi: the VSI for which link needs a message
4148  */
4149 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4150 {
4151         char speed[SPEED_SIZE] = "Unknown";
4152         char fc[FC_SIZE] = "RX/TX";
4153
4154         if (!isup) {
4155                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4156                 return;
4157         }
4158
4159         switch (vsi->back->hw.phy.link_info.link_speed) {
4160         case I40E_LINK_SPEED_40GB:
4161                 strncpy(speed, "40 Gbps", SPEED_SIZE);
4162                 break;
4163         case I40E_LINK_SPEED_10GB:
4164                 strncpy(speed, "10 Gbps", SPEED_SIZE);
4165                 break;
4166         case I40E_LINK_SPEED_1GB:
4167                 strncpy(speed, "1000 Mbps", SPEED_SIZE);
4168                 break;
4169         default:
4170                 break;
4171         }
4172
4173         switch (vsi->back->hw.fc.current_mode) {
4174         case I40E_FC_FULL:
4175                 strncpy(fc, "RX/TX", FC_SIZE);
4176                 break;
4177         case I40E_FC_TX_PAUSE:
4178                 strncpy(fc, "TX", FC_SIZE);
4179                 break;
4180         case I40E_FC_RX_PAUSE:
4181                 strncpy(fc, "RX", FC_SIZE);
4182                 break;
4183         default:
4184                 strncpy(fc, "None", FC_SIZE);
4185                 break;
4186         }
4187
4188         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4189                     speed, fc);
4190 }
4191
4192 /**
4193  * i40e_up_complete - Finish the last steps of bringing up a connection
4194  * @vsi: the VSI being configured
4195  **/
4196 static int i40e_up_complete(struct i40e_vsi *vsi)
4197 {
4198         struct i40e_pf *pf = vsi->back;
4199         int err;
4200
4201         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4202                 i40e_vsi_configure_msix(vsi);
4203         else
4204                 i40e_configure_msi_and_legacy(vsi);
4205
4206         /* start rings */
4207         err = i40e_vsi_control_rings(vsi, true);
4208         if (err)
4209                 return err;
4210
4211         clear_bit(__I40E_DOWN, &vsi->state);
4212         i40e_napi_enable_all(vsi);
4213         i40e_vsi_enable_irq(vsi);
4214
4215         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4216             (vsi->netdev)) {
4217                 i40e_print_link_message(vsi, true);
4218                 netif_tx_start_all_queues(vsi->netdev);
4219                 netif_carrier_on(vsi->netdev);
4220         } else if (vsi->netdev) {
4221                 i40e_print_link_message(vsi, false);
4222         }
4223
4224         /* replay FDIR SB filters */
4225         if (vsi->type == I40E_VSI_FDIR)
4226                 i40e_fdir_filter_restore(vsi);
4227         i40e_service_event_schedule(pf);
4228
4229         return 0;
4230 }
4231
4232 /**
4233  * i40e_vsi_reinit_locked - Reset the VSI
4234  * @vsi: the VSI being configured
4235  *
4236  * Rebuild the ring structs after some configuration
4237  * has changed, e.g. MTU size.
4238  **/
4239 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4240 {
4241         struct i40e_pf *pf = vsi->back;
4242
4243         WARN_ON(in_interrupt());
4244         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4245                 usleep_range(1000, 2000);
4246         i40e_down(vsi);
4247
4248         /* Give a VF some time to respond to the reset.  The
4249          * two second wait is based upon the watchdog cycle in
4250          * the VF driver.
4251          */
4252         if (vsi->type == I40E_VSI_SRIOV)
4253                 msleep(2000);
4254         i40e_up(vsi);
4255         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4256 }
4257
4258 /**
4259  * i40e_up - Bring the connection back up after being down
4260  * @vsi: the VSI being configured
4261  **/
4262 int i40e_up(struct i40e_vsi *vsi)
4263 {
4264         int err;
4265
4266         err = i40e_vsi_configure(vsi);
4267         if (!err)
4268                 err = i40e_up_complete(vsi);
4269
4270         return err;
4271 }
4272
4273 /**
4274  * i40e_down - Shutdown the connection processing
4275  * @vsi: the VSI being stopped
4276  **/
4277 void i40e_down(struct i40e_vsi *vsi)
4278 {
4279         int i;
4280
4281         /* It is assumed that the caller of this function
4282          * sets the vsi->state __I40E_DOWN bit.
4283          */
4284         if (vsi->netdev) {
4285                 netif_carrier_off(vsi->netdev);
4286                 netif_tx_disable(vsi->netdev);
4287         }
4288         i40e_vsi_disable_irq(vsi);
4289         i40e_vsi_control_rings(vsi, false);
4290         i40e_napi_disable_all(vsi);
4291
4292         for (i = 0; i < vsi->num_queue_pairs; i++) {
4293                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4294                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4295         }
4296 }
4297
4298 /**
4299  * i40e_setup_tc - configure multiple traffic classes
4300  * @netdev: net device to configure
4301  * @tc: number of traffic classes to enable
4302  **/
4303 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4304 {
4305         struct i40e_netdev_priv *np = netdev_priv(netdev);
4306         struct i40e_vsi *vsi = np->vsi;
4307         struct i40e_pf *pf = vsi->back;
4308         u8 enabled_tc = 0;
4309         int ret = -EINVAL;
4310         int i;
4311
4312         /* Check if DCB enabled to continue */
4313         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4314                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4315                 goto exit;
4316         }
4317
4318         /* Check if MFP enabled */
4319         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4320                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4321                 goto exit;
4322         }
4323
4324         /* Check whether tc count is within enabled limit */
4325         if (tc > i40e_pf_get_num_tc(pf)) {
4326                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4327                 goto exit;
4328         }
4329
4330         /* Generate TC map for number of tc requested */
4331         for (i = 0; i < tc; i++)
4332                 enabled_tc |= (1 << i);
4333
4334         /* Requesting same TC configuration as already enabled */
4335         if (enabled_tc == vsi->tc_config.enabled_tc)
4336                 return 0;
4337
4338         /* Quiesce VSI queues */
4339         i40e_quiesce_vsi(vsi);
4340
4341         /* Configure VSI for enabled TCs */
4342         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4343         if (ret) {
4344                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4345                             vsi->seid);
4346                 goto exit;
4347         }
4348
4349         /* Unquiesce VSI */
4350         i40e_unquiesce_vsi(vsi);
4351
4352 exit:
4353         return ret;
4354 }
4355
4356 /**
4357  * i40e_open - Called when a network interface is made active
4358  * @netdev: network interface device structure
4359  *
4360  * The open entry point is called when a network interface is made
4361  * active by the system (IFF_UP).  At this point all resources needed
4362  * for transmit and receive operations are allocated, the interrupt
4363  * handler is registered with the OS, the netdev watchdog subtask is
4364  * enabled, and the stack is notified that the interface is ready.
4365  *
4366  * Returns 0 on success, negative value on failure
4367  **/
4368 static int i40e_open(struct net_device *netdev)
4369 {
4370         struct i40e_netdev_priv *np = netdev_priv(netdev);
4371         struct i40e_vsi *vsi = np->vsi;
4372         struct i40e_pf *pf = vsi->back;
4373         int err;
4374
4375         /* disallow open during test or if eeprom is broken */
4376         if (test_bit(__I40E_TESTING, &pf->state) ||
4377             test_bit(__I40E_BAD_EEPROM, &pf->state))
4378                 return -EBUSY;
4379
4380         netif_carrier_off(netdev);
4381
4382         err = i40e_vsi_open(vsi);
4383         if (err)
4384                 return err;
4385
4386         /* configure global TSO hardware offload settings */
4387         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4388                                                        TCP_FLAG_FIN) >> 16);
4389         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4390                                                        TCP_FLAG_FIN |
4391                                                        TCP_FLAG_CWR) >> 16);
4392         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4393
4394 #ifdef CONFIG_I40E_VXLAN
4395         vxlan_get_rx_port(netdev);
4396 #endif
4397
4398         return 0;
4399 }
4400
4401 /**
4402  * i40e_vsi_open -
4403  * @vsi: the VSI to open
4404  *
4405  * Finish initialization of the VSI.
4406  *
4407  * Returns 0 on success, negative value on failure
4408  **/
4409 int i40e_vsi_open(struct i40e_vsi *vsi)
4410 {
4411         struct i40e_pf *pf = vsi->back;
4412         char int_name[IFNAMSIZ];
4413         int err;
4414
4415         /* allocate descriptors */
4416         err = i40e_vsi_setup_tx_resources(vsi);
4417         if (err)
4418                 goto err_setup_tx;
4419         err = i40e_vsi_setup_rx_resources(vsi);
4420         if (err)
4421                 goto err_setup_rx;
4422
4423         err = i40e_vsi_configure(vsi);
4424         if (err)
4425                 goto err_setup_rx;
4426
4427         if (vsi->netdev) {
4428                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4429                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4430                 err = i40e_vsi_request_irq(vsi, int_name);
4431                 if (err)
4432                         goto err_setup_rx;
4433
4434                 /* Notify the stack of the actual queue counts. */
4435                 err = netif_set_real_num_tx_queues(vsi->netdev,
4436                                                    vsi->num_queue_pairs);
4437                 if (err)
4438                         goto err_set_queues;
4439
4440                 err = netif_set_real_num_rx_queues(vsi->netdev,
4441                                                    vsi->num_queue_pairs);
4442                 if (err)
4443                         goto err_set_queues;
4444
4445         } else if (vsi->type == I40E_VSI_FDIR) {
4446                 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
4447                          dev_driver_string(&pf->pdev->dev));
4448                 err = i40e_vsi_request_irq(vsi, int_name);
4449         } else {
4450                 err = -EINVAL;
4451                 goto err_setup_rx;
4452         }
4453
4454         err = i40e_up_complete(vsi);
4455         if (err)
4456                 goto err_up_complete;
4457
4458         return 0;
4459
4460 err_up_complete:
4461         i40e_down(vsi);
4462 err_set_queues:
4463         i40e_vsi_free_irq(vsi);
4464 err_setup_rx:
4465         i40e_vsi_free_rx_resources(vsi);
4466 err_setup_tx:
4467         i40e_vsi_free_tx_resources(vsi);
4468         if (vsi == pf->vsi[pf->lan_vsi])
4469                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4470
4471         return err;
4472 }
4473
4474 /**
4475  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4476  * @pf: Pointer to pf
4477  *
4478  * This function destroys the hlist where all the Flow Director
4479  * filters were saved.
4480  **/
4481 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4482 {
4483         struct i40e_fdir_filter *filter;
4484         struct hlist_node *node2;
4485
4486         hlist_for_each_entry_safe(filter, node2,
4487                                   &pf->fdir_filter_list, fdir_node) {
4488                 hlist_del(&filter->fdir_node);
4489                 kfree(filter);
4490         }
4491         pf->fdir_pf_active_filters = 0;
4492 }
4493
4494 /**
4495  * i40e_close - Disables a network interface
4496  * @netdev: network interface device structure
4497  *
4498  * The close entry point is called when an interface is de-activated
4499  * by the OS.  The hardware is still under the driver's control, but
4500  * this netdev interface is disabled.
4501  *
4502  * Returns 0, this is not allowed to fail
4503  **/
4504 static int i40e_close(struct net_device *netdev)
4505 {
4506         struct i40e_netdev_priv *np = netdev_priv(netdev);
4507         struct i40e_vsi *vsi = np->vsi;
4508
4509         i40e_vsi_close(vsi);
4510
4511         return 0;
4512 }
4513
4514 /**
4515  * i40e_do_reset - Start a PF or Core Reset sequence
4516  * @pf: board private structure
4517  * @reset_flags: which reset is requested
4518  *
4519  * The essential difference in resets is that the PF Reset
4520  * doesn't clear the packet buffers, doesn't reset the PE
4521  * firmware, and doesn't bother the other PFs on the chip.
4522  **/
4523 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
4524 {
4525         u32 val;
4526
4527         WARN_ON(in_interrupt());
4528
4529         if (i40e_check_asq_alive(&pf->hw))
4530                 i40e_vc_notify_reset(pf);
4531
4532         /* do the biggest reset indicated */
4533         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
4534
4535                 /* Request a Global Reset
4536                  *
4537                  * This will start the chip's countdown to the actual full
4538                  * chip reset event, and a warning interrupt to be sent
4539                  * to all PFs, including the requestor.  Our handler
4540                  * for the warning interrupt will deal with the shutdown
4541                  * and recovery of the switch setup.
4542                  */
4543                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
4544                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4545                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
4546                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4547
4548         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
4549
4550                 /* Request a Core Reset
4551                  *
4552                  * Same as Global Reset, except does *not* include the MAC/PHY
4553                  */
4554                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
4555                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4556                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
4557                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4558                 i40e_flush(&pf->hw);
4559
4560         } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
4561
4562                 /* Request a Firmware Reset
4563                  *
4564                  * Same as Global reset, plus restarting the
4565                  * embedded firmware engine.
4566                  */
4567                 /* enable EMP Reset */
4568                 val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
4569                 val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
4570                 wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
4571
4572                 /* force the reset */
4573                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4574                 val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
4575                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4576                 i40e_flush(&pf->hw);
4577
4578         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
4579
4580                 /* Request a PF Reset
4581                  *
4582                  * Resets only the PF-specific registers
4583                  *
4584                  * This goes directly to the tear-down and rebuild of
4585                  * the switch, since we need to do all the recovery as
4586                  * for the Core Reset.
4587                  */
4588                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
4589                 i40e_handle_reset_warning(pf);
4590
4591         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
4592                 int v;
4593
4594                 /* Find the VSI(s) that requested a re-init */
4595                 dev_info(&pf->pdev->dev,
4596                          "VSI reinit requested\n");
4597                 for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4598                         struct i40e_vsi *vsi = pf->vsi[v];
4599                         if (vsi != NULL &&
4600                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
4601                                 i40e_vsi_reinit_locked(pf->vsi[v]);
4602                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
4603                         }
4604                 }
4605
4606                 /* no further action needed, so return now */
4607                 return;
4608         } else {
4609                 dev_info(&pf->pdev->dev,
4610                          "bad reset request 0x%08x\n", reset_flags);
4611                 return;
4612         }
4613 }
4614
4615 #ifdef CONFIG_I40E_DCB
4616 /**
4617  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
4618  * @pf: board private structure
4619  * @old_cfg: current DCB config
4620  * @new_cfg: new DCB config
4621  **/
4622 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
4623                             struct i40e_dcbx_config *old_cfg,
4624                             struct i40e_dcbx_config *new_cfg)
4625 {
4626         bool need_reconfig = false;
4627
4628         /* Check if ETS configuration has changed */
4629         if (memcmp(&new_cfg->etscfg,
4630                    &old_cfg->etscfg,
4631                    sizeof(new_cfg->etscfg))) {
4632                 /* If Priority Table has changed reconfig is needed */
4633                 if (memcmp(&new_cfg->etscfg.prioritytable,
4634                            &old_cfg->etscfg.prioritytable,
4635                            sizeof(new_cfg->etscfg.prioritytable))) {
4636                         need_reconfig = true;
4637                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
4638                 }
4639
4640                 if (memcmp(&new_cfg->etscfg.tcbwtable,
4641                            &old_cfg->etscfg.tcbwtable,
4642                            sizeof(new_cfg->etscfg.tcbwtable)))
4643                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
4644
4645                 if (memcmp(&new_cfg->etscfg.tsatable,
4646                            &old_cfg->etscfg.tsatable,
4647                            sizeof(new_cfg->etscfg.tsatable)))
4648                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
4649         }
4650
4651         /* Check if PFC configuration has changed */
4652         if (memcmp(&new_cfg->pfc,
4653                    &old_cfg->pfc,
4654                    sizeof(new_cfg->pfc))) {
4655                 need_reconfig = true;
4656                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
4657         }
4658
4659         /* Check if APP Table has changed */
4660         if (memcmp(&new_cfg->app,
4661                    &old_cfg->app,
4662                    sizeof(new_cfg->app))) {
4663                 need_reconfig = true;
4664                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
4665         }
4666
4667         return need_reconfig;
4668 }
4669
4670 /**
4671  * i40e_handle_lldp_event - Handle LLDP Change MIB event
4672  * @pf: board private structure
4673  * @e: event info posted on ARQ
4674  **/
4675 static int i40e_handle_lldp_event(struct i40e_pf *pf,
4676                                   struct i40e_arq_event_info *e)
4677 {
4678         struct i40e_aqc_lldp_get_mib *mib =
4679                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
4680         struct i40e_hw *hw = &pf->hw;
4681         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
4682         struct i40e_dcbx_config tmp_dcbx_cfg;
4683         bool need_reconfig = false;
4684         int ret = 0;
4685         u8 type;
4686
4687         /* Ignore if event is not for Nearest Bridge */
4688         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
4689                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
4690         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
4691                 return ret;
4692
4693         /* Check MIB Type and return if event for Remote MIB update */
4694         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
4695         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
4696                 /* Update the remote cached instance and return */
4697                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
4698                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
4699                                 &hw->remote_dcbx_config);
4700                 goto exit;
4701         }
4702
4703         /* Convert/store the DCBX data from LLDPDU temporarily */
4704         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
4705         ret = i40e_lldp_to_dcb_config(e->msg_buf, &tmp_dcbx_cfg);
4706         if (ret) {
4707                 /* Error in LLDPDU parsing return */
4708                 dev_info(&pf->pdev->dev, "Failed parsing LLDPDU from event buffer\n");
4709                 goto exit;
4710         }
4711
4712         /* No change detected in DCBX configs */
4713         if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
4714                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
4715                 goto exit;
4716         }
4717
4718         need_reconfig = i40e_dcb_need_reconfig(pf, dcbx_cfg, &tmp_dcbx_cfg);
4719
4720         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg);
4721
4722         /* Overwrite the new configuration */
4723         *dcbx_cfg = tmp_dcbx_cfg;
4724
4725         if (!need_reconfig)
4726                 goto exit;
4727
4728         /* Reconfiguration needed quiesce all VSIs */
4729         i40e_pf_quiesce_all_vsi(pf);
4730
4731         /* Changes in configuration update VEB/VSI */
4732         i40e_dcb_reconfigure(pf);
4733
4734         i40e_pf_unquiesce_all_vsi(pf);
4735 exit:
4736         return ret;
4737 }
4738 #endif /* CONFIG_I40E_DCB */
4739
4740 /**
4741  * i40e_do_reset_safe - Protected reset path for userland calls.
4742  * @pf: board private structure
4743  * @reset_flags: which reset is requested
4744  *
4745  **/
4746 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
4747 {
4748         rtnl_lock();
4749         i40e_do_reset(pf, reset_flags);
4750         rtnl_unlock();
4751 }
4752
4753 /**
4754  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
4755  * @pf: board private structure
4756  * @e: event info posted on ARQ
4757  *
4758  * Handler for LAN Queue Overflow Event generated by the firmware for PF
4759  * and VF queues
4760  **/
4761 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
4762                                            struct i40e_arq_event_info *e)
4763 {
4764         struct i40e_aqc_lan_overflow *data =
4765                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
4766         u32 queue = le32_to_cpu(data->prtdcb_rupto);
4767         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
4768         struct i40e_hw *hw = &pf->hw;
4769         struct i40e_vf *vf;
4770         u16 vf_id;
4771
4772         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
4773                 queue, qtx_ctl);
4774
4775         /* Queue belongs to VF, find the VF and issue VF reset */
4776         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
4777             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
4778                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
4779                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
4780                 vf_id -= hw->func_caps.vf_base_id;
4781                 vf = &pf->vf[vf_id];
4782                 i40e_vc_notify_vf_reset(vf);
4783                 /* Allow VF to process pending reset notification */
4784                 msleep(20);
4785                 i40e_reset_vf(vf, false);
4786         }
4787 }
4788
4789 /**
4790  * i40e_service_event_complete - Finish up the service event
4791  * @pf: board private structure
4792  **/
4793 static void i40e_service_event_complete(struct i40e_pf *pf)
4794 {
4795         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
4796
4797         /* flush memory to make sure state is correct before next watchog */
4798         smp_mb__before_clear_bit();
4799         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
4800 }
4801
4802 /**
4803  * i40e_get_current_fd_count - Get the count of FD filters programmed in the HW
4804  * @pf: board private structure
4805  **/
4806 int i40e_get_current_fd_count(struct i40e_pf *pf)
4807 {
4808         int val, fcnt_prog;
4809         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
4810         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
4811                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
4812                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
4813         return fcnt_prog;
4814 }
4815
4816 /**
4817  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
4818  * @pf: board private structure
4819  **/
4820 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
4821 {
4822         u32 fcnt_prog, fcnt_avail;
4823
4824         /* Check if, FD SB or ATR was auto disabled and if there is enough room
4825          * to re-enable
4826          */
4827         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4828             (pf->flags & I40E_FLAG_FD_SB_ENABLED))
4829                 return;
4830         fcnt_prog = i40e_get_current_fd_count(pf);
4831         fcnt_avail = i40e_get_fd_cnt_all(pf);
4832         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) {
4833                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
4834                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
4835                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
4836                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
4837                 }
4838         }
4839         /* Wait for some more space to be available to turn on ATR */
4840         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
4841                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4842                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
4843                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4844                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
4845                 }
4846         }
4847 }
4848
4849 /**
4850  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
4851  * @pf: board private structure
4852  **/
4853 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
4854 {
4855         if (!(pf->flags & I40E_FLAG_FDIR_REQUIRES_REINIT))
4856                 return;
4857
4858         /* if interface is down do nothing */
4859         if (test_bit(__I40E_DOWN, &pf->state))
4860                 return;
4861         i40e_fdir_check_and_reenable(pf);
4862
4863         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4864             (pf->flags & I40E_FLAG_FD_SB_ENABLED))
4865                 pf->flags &= ~I40E_FLAG_FDIR_REQUIRES_REINIT;
4866 }
4867
4868 /**
4869  * i40e_vsi_link_event - notify VSI of a link event
4870  * @vsi: vsi to be notified
4871  * @link_up: link up or down
4872  **/
4873 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
4874 {
4875         if (!vsi)
4876                 return;
4877
4878         switch (vsi->type) {
4879         case I40E_VSI_MAIN:
4880                 if (!vsi->netdev || !vsi->netdev_registered)
4881                         break;
4882
4883                 if (link_up) {
4884                         netif_carrier_on(vsi->netdev);
4885                         netif_tx_wake_all_queues(vsi->netdev);
4886                 } else {
4887                         netif_carrier_off(vsi->netdev);
4888                         netif_tx_stop_all_queues(vsi->netdev);
4889                 }
4890                 break;
4891
4892         case I40E_VSI_SRIOV:
4893                 break;
4894
4895         case I40E_VSI_VMDQ2:
4896         case I40E_VSI_CTRL:
4897         case I40E_VSI_MIRROR:
4898         default:
4899                 /* there is no notification for other VSIs */
4900                 break;
4901         }
4902 }
4903
4904 /**
4905  * i40e_veb_link_event - notify elements on the veb of a link event
4906  * @veb: veb to be notified
4907  * @link_up: link up or down
4908  **/
4909 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
4910 {
4911         struct i40e_pf *pf;
4912         int i;
4913
4914         if (!veb || !veb->pf)
4915                 return;
4916         pf = veb->pf;
4917
4918         /* depth first... */
4919         for (i = 0; i < I40E_MAX_VEB; i++)
4920                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
4921                         i40e_veb_link_event(pf->veb[i], link_up);
4922
4923         /* ... now the local VSIs */
4924         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
4925                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
4926                         i40e_vsi_link_event(pf->vsi[i], link_up);
4927 }
4928
4929 /**
4930  * i40e_link_event - Update netif_carrier status
4931  * @pf: board private structure
4932  **/
4933 static void i40e_link_event(struct i40e_pf *pf)
4934 {
4935         bool new_link, old_link;
4936
4937         new_link = (pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP);
4938         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
4939
4940         if (new_link == old_link)
4941                 return;
4942         if (!test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state))
4943                 i40e_print_link_message(pf->vsi[pf->lan_vsi], new_link);
4944
4945         /* Notify the base of the switch tree connected to
4946          * the link.  Floating VEBs are not notified.
4947          */
4948         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
4949                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
4950         else
4951                 i40e_vsi_link_event(pf->vsi[pf->lan_vsi], new_link);
4952
4953         if (pf->vf)
4954                 i40e_vc_notify_link_state(pf);
4955
4956         if (pf->flags & I40E_FLAG_PTP)
4957                 i40e_ptp_set_increment(pf);
4958 }
4959
4960 /**
4961  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
4962  * @pf: board private structure
4963  *
4964  * Set the per-queue flags to request a check for stuck queues in the irq
4965  * clean functions, then force interrupts to be sure the irq clean is called.
4966  **/
4967 static void i40e_check_hang_subtask(struct i40e_pf *pf)
4968 {
4969         int i, v;
4970
4971         /* If we're down or resetting, just bail */
4972         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
4973                 return;
4974
4975         /* for each VSI/netdev
4976          *     for each Tx queue
4977          *         set the check flag
4978          *     for each q_vector
4979          *         force an interrupt
4980          */
4981         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4982                 struct i40e_vsi *vsi = pf->vsi[v];
4983                 int armed = 0;
4984
4985                 if (!pf->vsi[v] ||
4986                     test_bit(__I40E_DOWN, &vsi->state) ||
4987                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
4988                         continue;
4989
4990                 for (i = 0; i < vsi->num_queue_pairs; i++) {
4991                         set_check_for_tx_hang(vsi->tx_rings[i]);
4992                         if (test_bit(__I40E_HANG_CHECK_ARMED,
4993                                      &vsi->tx_rings[i]->state))
4994                                 armed++;
4995                 }
4996
4997                 if (armed) {
4998                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
4999                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5000                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5001                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
5002                         } else {
5003                                 u16 vec = vsi->base_vector - 1;
5004                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5005                                            I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
5006                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5007                                         wr32(&vsi->back->hw,
5008                                              I40E_PFINT_DYN_CTLN(vec), val);
5009                         }
5010                         i40e_flush(&vsi->back->hw);
5011                 }
5012         }
5013 }
5014
5015 /**
5016  * i40e_watchdog_subtask - Check and bring link up
5017  * @pf: board private structure
5018  **/
5019 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5020 {
5021         int i;
5022
5023         /* if interface is down do nothing */
5024         if (test_bit(__I40E_DOWN, &pf->state) ||
5025             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5026                 return;
5027
5028         /* Update the stats for active netdevs so the network stack
5029          * can look at updated numbers whenever it cares to
5030          */
5031         for (i = 0; i < pf->hw.func_caps.num_vsis; i++)
5032                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5033                         i40e_update_stats(pf->vsi[i]);
5034
5035         /* Update the stats for the active switching components */
5036         for (i = 0; i < I40E_MAX_VEB; i++)
5037                 if (pf->veb[i])
5038                         i40e_update_veb_stats(pf->veb[i]);
5039
5040         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5041 }
5042
5043 /**
5044  * i40e_reset_subtask - Set up for resetting the device and driver
5045  * @pf: board private structure
5046  **/
5047 static void i40e_reset_subtask(struct i40e_pf *pf)
5048 {
5049         u32 reset_flags = 0;
5050
5051         rtnl_lock();
5052         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5053                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5054                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5055         }
5056         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5057                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5058                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5059         }
5060         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5061                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5062                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5063         }
5064         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5065                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5066                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5067         }
5068
5069         /* If there's a recovery already waiting, it takes
5070          * precedence before starting a new reset sequence.
5071          */
5072         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5073                 i40e_handle_reset_warning(pf);
5074                 goto unlock;
5075         }
5076
5077         /* If we're already down or resetting, just bail */
5078         if (reset_flags &&
5079             !test_bit(__I40E_DOWN, &pf->state) &&
5080             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5081                 i40e_do_reset(pf, reset_flags);
5082
5083 unlock:
5084         rtnl_unlock();
5085 }
5086
5087 /**
5088  * i40e_handle_link_event - Handle link event
5089  * @pf: board private structure
5090  * @e: event info posted on ARQ
5091  **/
5092 static void i40e_handle_link_event(struct i40e_pf *pf,
5093                                    struct i40e_arq_event_info *e)
5094 {
5095         struct i40e_hw *hw = &pf->hw;
5096         struct i40e_aqc_get_link_status *status =
5097                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5098         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
5099
5100         /* save off old link status information */
5101         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
5102                sizeof(pf->hw.phy.link_info_old));
5103
5104         /* update link status */
5105         hw_link_info->phy_type = (enum i40e_aq_phy_type)status->phy_type;
5106         hw_link_info->link_speed = (enum i40e_aq_link_speed)status->link_speed;
5107         hw_link_info->link_info = status->link_info;
5108         hw_link_info->an_info = status->an_info;
5109         hw_link_info->ext_info = status->ext_info;
5110         hw_link_info->lse_enable =
5111                 le16_to_cpu(status->command_flags) &
5112                             I40E_AQ_LSE_ENABLE;
5113
5114         /* process the event */
5115         i40e_link_event(pf);
5116
5117         /* Do a new status request to re-enable LSE reporting
5118          * and load new status information into the hw struct,
5119          * then see if the status changed while processing the
5120          * initial event.
5121          */
5122         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
5123         i40e_link_event(pf);
5124 }
5125
5126 /**
5127  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5128  * @pf: board private structure
5129  **/
5130 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5131 {
5132         struct i40e_arq_event_info event;
5133         struct i40e_hw *hw = &pf->hw;
5134         u16 pending, i = 0;
5135         i40e_status ret;
5136         u16 opcode;
5137         u32 val;
5138
5139         if (!test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state))
5140                 return;
5141
5142         event.msg_size = I40E_MAX_AQ_BUF_SIZE;
5143         event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
5144         if (!event.msg_buf)
5145                 return;
5146
5147         do {
5148                 event.msg_size = I40E_MAX_AQ_BUF_SIZE; /* reinit each time */
5149                 ret = i40e_clean_arq_element(hw, &event, &pending);
5150                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK) {
5151                         dev_info(&pf->pdev->dev, "No ARQ event found\n");
5152                         break;
5153                 } else if (ret) {
5154                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5155                         break;
5156                 }
5157
5158                 opcode = le16_to_cpu(event.desc.opcode);
5159                 switch (opcode) {
5160
5161                 case i40e_aqc_opc_get_link_status:
5162                         i40e_handle_link_event(pf, &event);
5163                         break;
5164                 case i40e_aqc_opc_send_msg_to_pf:
5165                         ret = i40e_vc_process_vf_msg(pf,
5166                                         le16_to_cpu(event.desc.retval),
5167                                         le32_to_cpu(event.desc.cookie_high),
5168                                         le32_to_cpu(event.desc.cookie_low),
5169                                         event.msg_buf,
5170                                         event.msg_size);
5171                         break;
5172                 case i40e_aqc_opc_lldp_update_mib:
5173                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5174 #ifdef CONFIG_I40E_DCB
5175                         rtnl_lock();
5176                         ret = i40e_handle_lldp_event(pf, &event);
5177                         rtnl_unlock();
5178 #endif /* CONFIG_I40E_DCB */
5179                         break;
5180                 case i40e_aqc_opc_event_lan_overflow:
5181                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5182                         i40e_handle_lan_overflow_event(pf, &event);
5183                         break;
5184                 case i40e_aqc_opc_send_msg_to_peer:
5185                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5186                         break;
5187                 default:
5188                         dev_info(&pf->pdev->dev,
5189                                  "ARQ Error: Unknown event 0x%04x received\n",
5190                                  opcode);
5191                         break;
5192                 }
5193         } while (pending && (i++ < pf->adminq_work_limit));
5194
5195         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5196         /* re-enable Admin queue interrupt cause */
5197         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5198         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5199         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5200         i40e_flush(hw);
5201
5202         kfree(event.msg_buf);
5203 }
5204
5205 /**
5206  * i40e_verify_eeprom - make sure eeprom is good to use
5207  * @pf: board private structure
5208  **/
5209 static void i40e_verify_eeprom(struct i40e_pf *pf)
5210 {
5211         int err;
5212
5213         err = i40e_diag_eeprom_test(&pf->hw);
5214         if (err) {
5215                 /* retry in case of garbage read */
5216                 err = i40e_diag_eeprom_test(&pf->hw);
5217                 if (err) {
5218                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5219                                  err);
5220                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5221                 }
5222         }
5223
5224         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5225                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5226                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5227         }
5228 }
5229
5230 /**
5231  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5232  * @veb: pointer to the VEB instance
5233  *
5234  * This is a recursive function that first builds the attached VSIs then
5235  * recurses in to build the next layer of VEB.  We track the connections
5236  * through our own index numbers because the seid's from the HW could
5237  * change across the reset.
5238  **/
5239 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5240 {
5241         struct i40e_vsi *ctl_vsi = NULL;
5242         struct i40e_pf *pf = veb->pf;
5243         int v, veb_idx;
5244         int ret;
5245
5246         /* build VSI that owns this VEB, temporarily attached to base VEB */
5247         for (v = 0; v < pf->hw.func_caps.num_vsis && !ctl_vsi; v++) {
5248                 if (pf->vsi[v] &&
5249                     pf->vsi[v]->veb_idx == veb->idx &&
5250                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5251                         ctl_vsi = pf->vsi[v];
5252                         break;
5253                 }
5254         }
5255         if (!ctl_vsi) {
5256                 dev_info(&pf->pdev->dev,
5257                          "missing owner VSI for veb_idx %d\n", veb->idx);
5258                 ret = -ENOENT;
5259                 goto end_reconstitute;
5260         }
5261         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5262                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5263         ret = i40e_add_vsi(ctl_vsi);
5264         if (ret) {
5265                 dev_info(&pf->pdev->dev,
5266                          "rebuild of owner VSI failed: %d\n", ret);
5267                 goto end_reconstitute;
5268         }
5269         i40e_vsi_reset_stats(ctl_vsi);
5270
5271         /* create the VEB in the switch and move the VSI onto the VEB */
5272         ret = i40e_add_veb(veb, ctl_vsi);
5273         if (ret)
5274                 goto end_reconstitute;
5275
5276         /* create the remaining VSIs attached to this VEB */
5277         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
5278                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5279                         continue;
5280
5281                 if (pf->vsi[v]->veb_idx == veb->idx) {
5282                         struct i40e_vsi *vsi = pf->vsi[v];
5283                         vsi->uplink_seid = veb->seid;
5284                         ret = i40e_add_vsi(vsi);
5285                         if (ret) {
5286                                 dev_info(&pf->pdev->dev,
5287                                          "rebuild of vsi_idx %d failed: %d\n",
5288                                          v, ret);
5289                                 goto end_reconstitute;
5290                         }
5291                         i40e_vsi_reset_stats(vsi);
5292                 }
5293         }
5294
5295         /* create any VEBs attached to this VEB - RECURSION */
5296         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5297                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5298                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5299                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5300                         if (ret)
5301                                 break;
5302                 }
5303         }
5304
5305 end_reconstitute:
5306         return ret;
5307 }
5308
5309 /**
5310  * i40e_get_capabilities - get info about the HW
5311  * @pf: the PF struct
5312  **/
5313 static int i40e_get_capabilities(struct i40e_pf *pf)
5314 {
5315         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5316         u16 data_size;
5317         int buf_len;
5318         int err;
5319
5320         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5321         do {
5322                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5323                 if (!cap_buf)
5324                         return -ENOMEM;
5325
5326                 /* this loads the data into the hw struct for us */
5327                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5328                                             &data_size,
5329                                             i40e_aqc_opc_list_func_capabilities,
5330                                             NULL);
5331                 /* data loaded, buffer no longer needed */
5332                 kfree(cap_buf);
5333
5334                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
5335                         /* retry with a larger buffer */
5336                         buf_len = data_size;
5337                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
5338                         dev_info(&pf->pdev->dev,
5339                                  "capability discovery failed: aq=%d\n",
5340                                  pf->hw.aq.asq_last_status);
5341                         return -ENODEV;
5342                 }
5343         } while (err);
5344
5345         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
5346             (pf->hw.aq.fw_maj_ver < 2)) {
5347                 pf->hw.func_caps.num_msix_vectors++;
5348                 pf->hw.func_caps.num_msix_vectors_vf++;
5349         }
5350
5351         if (pf->hw.debug_mask & I40E_DEBUG_USER)
5352                 dev_info(&pf->pdev->dev,
5353                          "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",
5354                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
5355                          pf->hw.func_caps.num_msix_vectors,
5356                          pf->hw.func_caps.num_msix_vectors_vf,
5357                          pf->hw.func_caps.fd_filters_guaranteed,
5358                          pf->hw.func_caps.fd_filters_best_effort,
5359                          pf->hw.func_caps.num_tx_qp,
5360                          pf->hw.func_caps.num_vsis);
5361
5362 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
5363                        + pf->hw.func_caps.num_vfs)
5364         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
5365                 dev_info(&pf->pdev->dev,
5366                          "got num_vsis %d, setting num_vsis to %d\n",
5367                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
5368                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
5369         }
5370
5371         return 0;
5372 }
5373
5374 static int i40e_vsi_clear(struct i40e_vsi *vsi);
5375
5376 /**
5377  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
5378  * @pf: board private structure
5379  **/
5380 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
5381 {
5382         struct i40e_vsi *vsi;
5383         int i;
5384
5385         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
5386                 return;
5387
5388         /* find existing VSI and see if it needs configuring */
5389         vsi = NULL;
5390         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
5391                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5392                         vsi = pf->vsi[i];
5393                         break;
5394                 }
5395         }
5396
5397         /* create a new VSI if none exists */
5398         if (!vsi) {
5399                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
5400                                      pf->vsi[pf->lan_vsi]->seid, 0);
5401                 if (!vsi) {
5402                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
5403                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
5404                         return;
5405                 }
5406         }
5407
5408         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
5409 }
5410
5411 /**
5412  * i40e_fdir_teardown - release the Flow Director resources
5413  * @pf: board private structure
5414  **/
5415 static void i40e_fdir_teardown(struct i40e_pf *pf)
5416 {
5417         int i;
5418
5419         i40e_fdir_filter_exit(pf);
5420         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
5421                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5422                         i40e_vsi_release(pf->vsi[i]);
5423                         break;
5424                 }
5425         }
5426 }
5427
5428 /**
5429  * i40e_prep_for_reset - prep for the core to reset
5430  * @pf: board private structure
5431  *
5432  * Close up the VFs and other things in prep for pf Reset.
5433   **/
5434 static int i40e_prep_for_reset(struct i40e_pf *pf)
5435 {
5436         struct i40e_hw *hw = &pf->hw;
5437         i40e_status ret = 0;
5438         u32 v;
5439
5440         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
5441         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
5442                 return 0;
5443
5444         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
5445
5446         /* quiesce the VSIs and their queues that are not already DOWN */
5447         i40e_pf_quiesce_all_vsi(pf);
5448
5449         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
5450                 if (pf->vsi[v])
5451                         pf->vsi[v]->seid = 0;
5452         }
5453
5454         i40e_shutdown_adminq(&pf->hw);
5455
5456         /* call shutdown HMC */
5457         if (hw->hmc.hmc_obj) {
5458                 ret = i40e_shutdown_lan_hmc(hw);
5459                 if (ret) {
5460                         dev_warn(&pf->pdev->dev,
5461                                  "shutdown_lan_hmc failed: %d\n", ret);
5462                         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
5463                 }
5464         }
5465         return ret;
5466 }
5467
5468 /**
5469  * i40e_send_version - update firmware with driver version
5470  * @pf: PF struct
5471  */
5472 static void i40e_send_version(struct i40e_pf *pf)
5473 {
5474         struct i40e_driver_version dv;
5475
5476         dv.major_version = DRV_VERSION_MAJOR;
5477         dv.minor_version = DRV_VERSION_MINOR;
5478         dv.build_version = DRV_VERSION_BUILD;
5479         dv.subbuild_version = 0;
5480         strncpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
5481         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
5482 }
5483
5484 /**
5485  * i40e_reset_and_rebuild - reset and rebuild using a saved config
5486  * @pf: board private structure
5487  * @reinit: if the Main VSI needs to re-initialized.
5488  **/
5489 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
5490 {
5491         struct i40e_hw *hw = &pf->hw;
5492         i40e_status ret;
5493         u32 v;
5494
5495         /* Now we wait for GRST to settle out.
5496          * We don't have to delete the VEBs or VSIs from the hw switch
5497          * because the reset will make them disappear.
5498          */
5499         ret = i40e_pf_reset(hw);
5500         if (ret) {
5501                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
5502                 goto end_core_reset;
5503         }
5504         pf->pfr_count++;
5505
5506         if (test_bit(__I40E_DOWN, &pf->state))
5507                 goto end_core_reset;
5508         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
5509
5510         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
5511         ret = i40e_init_adminq(&pf->hw);
5512         if (ret) {
5513                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
5514                 goto end_core_reset;
5515         }
5516
5517         /* re-verify the eeprom if we just had an EMP reset */
5518         if (test_bit(__I40E_EMP_RESET_REQUESTED, &pf->state)) {
5519                 clear_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
5520                 i40e_verify_eeprom(pf);
5521         }
5522
5523         ret = i40e_get_capabilities(pf);
5524         if (ret) {
5525                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
5526                          ret);
5527                 goto end_core_reset;
5528         }
5529
5530         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
5531                                 hw->func_caps.num_rx_qp,
5532                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
5533         if (ret) {
5534                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
5535                 goto end_core_reset;
5536         }
5537         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
5538         if (ret) {
5539                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
5540                 goto end_core_reset;
5541         }
5542
5543 #ifdef CONFIG_I40E_DCB
5544         ret = i40e_init_pf_dcb(pf);
5545         if (ret) {
5546                 dev_info(&pf->pdev->dev, "init_pf_dcb failed: %d\n", ret);
5547                 goto end_core_reset;
5548         }
5549 #endif /* CONFIG_I40E_DCB */
5550
5551         /* do basic switch setup */
5552         ret = i40e_setup_pf_switch(pf, reinit);
5553         if (ret)
5554                 goto end_core_reset;
5555
5556         /* Rebuild the VSIs and VEBs that existed before reset.
5557          * They are still in our local switch element arrays, so only
5558          * need to rebuild the switch model in the HW.
5559          *
5560          * If there were VEBs but the reconstitution failed, we'll try
5561          * try to recover minimal use by getting the basic PF VSI working.
5562          */
5563         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
5564                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
5565                 /* find the one VEB connected to the MAC, and find orphans */
5566                 for (v = 0; v < I40E_MAX_VEB; v++) {
5567                         if (!pf->veb[v])
5568                                 continue;
5569
5570                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
5571                             pf->veb[v]->uplink_seid == 0) {
5572                                 ret = i40e_reconstitute_veb(pf->veb[v]);
5573
5574                                 if (!ret)
5575                                         continue;
5576
5577                                 /* If Main VEB failed, we're in deep doodoo,
5578                                  * so give up rebuilding the switch and set up
5579                                  * for minimal rebuild of PF VSI.
5580                                  * If orphan failed, we'll report the error
5581                                  * but try to keep going.
5582                                  */
5583                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
5584                                         dev_info(&pf->pdev->dev,
5585                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
5586                                                  ret);
5587                                         pf->vsi[pf->lan_vsi]->uplink_seid
5588                                                                 = pf->mac_seid;
5589                                         break;
5590                                 } else if (pf->veb[v]->uplink_seid == 0) {
5591                                         dev_info(&pf->pdev->dev,
5592                                                  "rebuild of orphan VEB failed: %d\n",
5593                                                  ret);
5594                                 }
5595                         }
5596                 }
5597         }
5598
5599         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
5600                 dev_info(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
5601                 /* no VEB, so rebuild only the Main VSI */
5602                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
5603                 if (ret) {
5604                         dev_info(&pf->pdev->dev,
5605                                  "rebuild of Main VSI failed: %d\n", ret);
5606                         goto end_core_reset;
5607                 }
5608         }
5609
5610         /* reinit the misc interrupt */
5611         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5612                 ret = i40e_setup_misc_vector(pf);
5613
5614         /* restart the VSIs that were rebuilt and running before the reset */
5615         i40e_pf_unquiesce_all_vsi(pf);
5616
5617         if (pf->num_alloc_vfs) {
5618                 for (v = 0; v < pf->num_alloc_vfs; v++)
5619                         i40e_reset_vf(&pf->vf[v], true);
5620         }
5621
5622         /* tell the firmware that we're starting */
5623         i40e_send_version(pf);
5624
5625         dev_info(&pf->pdev->dev, "reset complete\n");
5626
5627 end_core_reset:
5628         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
5629 }
5630
5631 /**
5632  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
5633  * @pf: board private structure
5634  *
5635  * Close up the VFs and other things in prep for a Core Reset,
5636  * then get ready to rebuild the world.
5637  **/
5638 static void i40e_handle_reset_warning(struct i40e_pf *pf)
5639 {
5640         i40e_status ret;
5641
5642         ret = i40e_prep_for_reset(pf);
5643         if (!ret)
5644                 i40e_reset_and_rebuild(pf, false);
5645 }
5646
5647 /**
5648  * i40e_handle_mdd_event
5649  * @pf: pointer to the pf structure
5650  *
5651  * Called from the MDD irq handler to identify possibly malicious vfs
5652  **/
5653 static void i40e_handle_mdd_event(struct i40e_pf *pf)
5654 {
5655         struct i40e_hw *hw = &pf->hw;
5656         bool mdd_detected = false;
5657         struct i40e_vf *vf;
5658         u32 reg;
5659         int i;
5660
5661         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
5662                 return;
5663
5664         /* find what triggered the MDD event */
5665         reg = rd32(hw, I40E_GL_MDET_TX);
5666         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
5667                 u8 func = (reg & I40E_GL_MDET_TX_FUNCTION_MASK)
5668                                 >> I40E_GL_MDET_TX_FUNCTION_SHIFT;
5669                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_SHIFT)
5670                                 >> I40E_GL_MDET_TX_EVENT_SHIFT;
5671                 u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK)
5672                                 >> I40E_GL_MDET_TX_QUEUE_SHIFT;
5673                 dev_info(&pf->pdev->dev,
5674                          "Malicious Driver Detection event 0x%02x on TX queue %d of function 0x%02x\n",
5675                          event, queue, func);
5676                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
5677                 mdd_detected = true;
5678         }
5679         reg = rd32(hw, I40E_GL_MDET_RX);
5680         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
5681                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK)
5682                                 >> I40E_GL_MDET_RX_FUNCTION_SHIFT;
5683                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_SHIFT)
5684                                 >> I40E_GL_MDET_RX_EVENT_SHIFT;
5685                 u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK)
5686                                 >> I40E_GL_MDET_RX_QUEUE_SHIFT;
5687                 dev_info(&pf->pdev->dev,
5688                          "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
5689                          event, queue, func);
5690                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
5691                 mdd_detected = true;
5692         }
5693
5694         /* see if one of the VFs needs its hand slapped */
5695         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
5696                 vf = &(pf->vf[i]);
5697                 reg = rd32(hw, I40E_VP_MDET_TX(i));
5698                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
5699                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
5700                         vf->num_mdd_events++;
5701                         dev_info(&pf->pdev->dev, "MDD TX event on VF %d\n", i);
5702                 }
5703
5704                 reg = rd32(hw, I40E_VP_MDET_RX(i));
5705                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
5706                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
5707                         vf->num_mdd_events++;
5708                         dev_info(&pf->pdev->dev, "MDD RX event on VF %d\n", i);
5709                 }
5710
5711                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
5712                         dev_info(&pf->pdev->dev,
5713                                  "Too many MDD events on VF %d, disabled\n", i);
5714                         dev_info(&pf->pdev->dev,
5715                                  "Use PF Control I/F to re-enable the VF\n");
5716                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
5717                 }
5718         }
5719
5720         /* re-enable mdd interrupt cause */
5721         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
5722         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
5723         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
5724         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
5725         i40e_flush(hw);
5726 }
5727
5728 #ifdef CONFIG_I40E_VXLAN
5729 /**
5730  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
5731  * @pf: board private structure
5732  **/
5733 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
5734 {
5735         struct i40e_hw *hw = &pf->hw;
5736         i40e_status ret;
5737         u8 filter_index;
5738         __be16 port;
5739         int i;
5740
5741         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
5742                 return;
5743
5744         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
5745
5746         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
5747                 if (pf->pending_vxlan_bitmap & (1 << i)) {
5748                         pf->pending_vxlan_bitmap &= ~(1 << i);
5749                         port = pf->vxlan_ports[i];
5750                         ret = port ?
5751                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
5752                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
5753                                                      &filter_index, NULL)
5754                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
5755
5756                         if (ret) {
5757                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
5758                                          port ? "adding" : "deleting",
5759                                          ntohs(port), port ? i : i);
5760
5761                                 pf->vxlan_ports[i] = 0;
5762                         } else {
5763                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
5764                                          port ? "Added" : "Deleted",
5765                                          ntohs(port), port ? i : filter_index);
5766                         }
5767                 }
5768         }
5769 }
5770
5771 #endif
5772 /**
5773  * i40e_service_task - Run the driver's async subtasks
5774  * @work: pointer to work_struct containing our data
5775  **/
5776 static void i40e_service_task(struct work_struct *work)
5777 {
5778         struct i40e_pf *pf = container_of(work,
5779                                           struct i40e_pf,
5780                                           service_task);
5781         unsigned long start_time = jiffies;
5782
5783         i40e_reset_subtask(pf);
5784         i40e_handle_mdd_event(pf);
5785         i40e_vc_process_vflr_event(pf);
5786         i40e_watchdog_subtask(pf);
5787         i40e_fdir_reinit_subtask(pf);
5788         i40e_check_hang_subtask(pf);
5789         i40e_sync_filters_subtask(pf);
5790 #ifdef CONFIG_I40E_VXLAN
5791         i40e_sync_vxlan_filters_subtask(pf);
5792 #endif
5793         i40e_clean_adminq_subtask(pf);
5794
5795         i40e_service_event_complete(pf);
5796
5797         /* If the tasks have taken longer than one timer cycle or there
5798          * is more work to be done, reschedule the service task now
5799          * rather than wait for the timer to tick again.
5800          */
5801         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
5802             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
5803             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
5804             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
5805                 i40e_service_event_schedule(pf);
5806 }
5807
5808 /**
5809  * i40e_service_timer - timer callback
5810  * @data: pointer to PF struct
5811  **/
5812 static void i40e_service_timer(unsigned long data)
5813 {
5814         struct i40e_pf *pf = (struct i40e_pf *)data;
5815
5816         mod_timer(&pf->service_timer,
5817                   round_jiffies(jiffies + pf->service_timer_period));
5818         i40e_service_event_schedule(pf);
5819 }
5820
5821 /**
5822  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
5823  * @vsi: the VSI being configured
5824  **/
5825 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
5826 {
5827         struct i40e_pf *pf = vsi->back;
5828
5829         switch (vsi->type) {
5830         case I40E_VSI_MAIN:
5831                 vsi->alloc_queue_pairs = pf->num_lan_qps;
5832                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5833                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5834                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5835                         vsi->num_q_vectors = pf->num_lan_msix;
5836                 else
5837                         vsi->num_q_vectors = 1;
5838
5839                 break;
5840
5841         case I40E_VSI_FDIR:
5842                 vsi->alloc_queue_pairs = 1;
5843                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
5844                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5845                 vsi->num_q_vectors = 1;
5846                 break;
5847
5848         case I40E_VSI_VMDQ2:
5849                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
5850                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5851                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5852                 vsi->num_q_vectors = pf->num_vmdq_msix;
5853                 break;
5854
5855         case I40E_VSI_SRIOV:
5856                 vsi->alloc_queue_pairs = pf->num_vf_qps;
5857                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
5858                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
5859                 break;
5860
5861         default:
5862                 WARN_ON(1);
5863                 return -ENODATA;
5864         }
5865
5866         return 0;
5867 }
5868
5869 /**
5870  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
5871  * @type: VSI pointer
5872  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
5873  *
5874  * On error: returns error code (negative)
5875  * On success: returns 0
5876  **/
5877 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
5878 {
5879         int size;
5880         int ret = 0;
5881
5882         /* allocate memory for both Tx and Rx ring pointers */
5883         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
5884         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
5885         if (!vsi->tx_rings)
5886                 return -ENOMEM;
5887         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
5888
5889         if (alloc_qvectors) {
5890                 /* allocate memory for q_vector pointers */
5891                 size = sizeof(struct i40e_q_vectors *) * vsi->num_q_vectors;
5892                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
5893                 if (!vsi->q_vectors) {
5894                         ret = -ENOMEM;
5895                         goto err_vectors;
5896                 }
5897         }
5898         return ret;
5899
5900 err_vectors:
5901         kfree(vsi->tx_rings);
5902         return ret;
5903 }
5904
5905 /**
5906  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
5907  * @pf: board private structure
5908  * @type: type of VSI
5909  *
5910  * On error: returns error code (negative)
5911  * On success: returns vsi index in PF (positive)
5912  **/
5913 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
5914 {
5915         int ret = -ENODEV;
5916         struct i40e_vsi *vsi;
5917         int vsi_idx;
5918         int i;
5919
5920         /* Need to protect the allocation of the VSIs at the PF level */
5921         mutex_lock(&pf->switch_mutex);
5922
5923         /* VSI list may be fragmented if VSI creation/destruction has
5924          * been happening.  We can afford to do a quick scan to look
5925          * for any free VSIs in the list.
5926          *
5927          * find next empty vsi slot, looping back around if necessary
5928          */
5929         i = pf->next_vsi;
5930         while (i < pf->hw.func_caps.num_vsis && pf->vsi[i])
5931                 i++;
5932         if (i >= pf->hw.func_caps.num_vsis) {
5933                 i = 0;
5934                 while (i < pf->next_vsi && pf->vsi[i])
5935                         i++;
5936         }
5937
5938         if (i < pf->hw.func_caps.num_vsis && !pf->vsi[i]) {
5939                 vsi_idx = i;             /* Found one! */
5940         } else {
5941                 ret = -ENODEV;
5942                 goto unlock_pf;  /* out of VSI slots! */
5943         }
5944         pf->next_vsi = ++i;
5945
5946         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
5947         if (!vsi) {
5948                 ret = -ENOMEM;
5949                 goto unlock_pf;
5950         }
5951         vsi->type = type;
5952         vsi->back = pf;
5953         set_bit(__I40E_DOWN, &vsi->state);
5954         vsi->flags = 0;
5955         vsi->idx = vsi_idx;
5956         vsi->rx_itr_setting = pf->rx_itr_default;
5957         vsi->tx_itr_setting = pf->tx_itr_default;
5958         vsi->netdev_registered = false;
5959         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
5960         INIT_LIST_HEAD(&vsi->mac_filter_list);
5961         vsi->irqs_ready = false;
5962
5963         ret = i40e_set_num_rings_in_vsi(vsi);
5964         if (ret)
5965                 goto err_rings;
5966
5967         ret = i40e_vsi_alloc_arrays(vsi, true);
5968         if (ret)
5969                 goto err_rings;
5970
5971         /* Setup default MSIX irq handler for VSI */
5972         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
5973
5974         pf->vsi[vsi_idx] = vsi;
5975         ret = vsi_idx;
5976         goto unlock_pf;
5977
5978 err_rings:
5979         pf->next_vsi = i - 1;
5980         kfree(vsi);
5981 unlock_pf:
5982         mutex_unlock(&pf->switch_mutex);
5983         return ret;
5984 }
5985
5986 /**
5987  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
5988  * @type: VSI pointer
5989  * @free_qvectors: a bool to specify if q_vectors need to be freed.
5990  *
5991  * On error: returns error code (negative)
5992  * On success: returns 0
5993  **/
5994 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
5995 {
5996         /* free the ring and vector containers */
5997         if (free_qvectors) {
5998                 kfree(vsi->q_vectors);
5999                 vsi->q_vectors = NULL;
6000         }
6001         kfree(vsi->tx_rings);
6002         vsi->tx_rings = NULL;
6003         vsi->rx_rings = NULL;
6004 }
6005
6006 /**
6007  * i40e_vsi_clear - Deallocate the VSI provided
6008  * @vsi: the VSI being un-configured
6009  **/
6010 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6011 {
6012         struct i40e_pf *pf;
6013
6014         if (!vsi)
6015                 return 0;
6016
6017         if (!vsi->back)
6018                 goto free_vsi;
6019         pf = vsi->back;
6020
6021         mutex_lock(&pf->switch_mutex);
6022         if (!pf->vsi[vsi->idx]) {
6023                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6024                         vsi->idx, vsi->idx, vsi, vsi->type);
6025                 goto unlock_vsi;
6026         }
6027
6028         if (pf->vsi[vsi->idx] != vsi) {
6029                 dev_err(&pf->pdev->dev,
6030                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6031                         pf->vsi[vsi->idx]->idx,
6032                         pf->vsi[vsi->idx],
6033                         pf->vsi[vsi->idx]->type,
6034                         vsi->idx, vsi, vsi->type);
6035                 goto unlock_vsi;
6036         }
6037
6038         /* updates the pf for this cleared vsi */
6039         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6040         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6041
6042         i40e_vsi_free_arrays(vsi, true);
6043
6044         pf->vsi[vsi->idx] = NULL;
6045         if (vsi->idx < pf->next_vsi)
6046                 pf->next_vsi = vsi->idx;
6047
6048 unlock_vsi:
6049         mutex_unlock(&pf->switch_mutex);
6050 free_vsi:
6051         kfree(vsi);
6052
6053         return 0;
6054 }
6055
6056 /**
6057  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6058  * @vsi: the VSI being cleaned
6059  **/
6060 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6061 {
6062         int i;
6063
6064         if (vsi->tx_rings && vsi->tx_rings[0]) {
6065                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6066                         kfree_rcu(vsi->tx_rings[i], rcu);
6067                         vsi->tx_rings[i] = NULL;
6068                         vsi->rx_rings[i] = NULL;
6069                 }
6070         }
6071 }
6072
6073 /**
6074  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6075  * @vsi: the VSI being configured
6076  **/
6077 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6078 {
6079         struct i40e_ring *tx_ring, *rx_ring;
6080         struct i40e_pf *pf = vsi->back;
6081         int i;
6082
6083         /* Set basic values in the rings to be used later during open() */
6084         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6085                 /* allocate space for both Tx and Rx in one shot */
6086                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6087                 if (!tx_ring)
6088                         goto err_out;
6089
6090                 tx_ring->queue_index = i;
6091                 tx_ring->reg_idx = vsi->base_queue + i;
6092                 tx_ring->ring_active = false;
6093                 tx_ring->vsi = vsi;
6094                 tx_ring->netdev = vsi->netdev;
6095                 tx_ring->dev = &pf->pdev->dev;
6096                 tx_ring->count = vsi->num_desc;
6097                 tx_ring->size = 0;
6098                 tx_ring->dcb_tc = 0;
6099                 vsi->tx_rings[i] = tx_ring;
6100
6101                 rx_ring = &tx_ring[1];
6102                 rx_ring->queue_index = i;
6103                 rx_ring->reg_idx = vsi->base_queue + i;
6104                 rx_ring->ring_active = false;
6105                 rx_ring->vsi = vsi;
6106                 rx_ring->netdev = vsi->netdev;
6107                 rx_ring->dev = &pf->pdev->dev;
6108                 rx_ring->count = vsi->num_desc;
6109                 rx_ring->size = 0;
6110                 rx_ring->dcb_tc = 0;
6111                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6112                         set_ring_16byte_desc_enabled(rx_ring);
6113                 else
6114                         clear_ring_16byte_desc_enabled(rx_ring);
6115                 vsi->rx_rings[i] = rx_ring;
6116         }
6117
6118         return 0;
6119
6120 err_out:
6121         i40e_vsi_clear_rings(vsi);
6122         return -ENOMEM;
6123 }
6124
6125 /**
6126  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6127  * @pf: board private structure
6128  * @vectors: the number of MSI-X vectors to request
6129  *
6130  * Returns the number of vectors reserved, or error
6131  **/
6132 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6133 {
6134         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6135                                         I40E_MIN_MSIX, vectors);
6136         if (vectors < 0) {
6137                 dev_info(&pf->pdev->dev,
6138                          "MSI-X vector reservation failed: %d\n", vectors);
6139                 vectors = 0;
6140         }
6141
6142         return vectors;
6143 }
6144
6145 /**
6146  * i40e_init_msix - Setup the MSIX capability
6147  * @pf: board private structure
6148  *
6149  * Work with the OS to set up the MSIX vectors needed.
6150  *
6151  * Returns 0 on success, negative on failure
6152  **/
6153 static int i40e_init_msix(struct i40e_pf *pf)
6154 {
6155         i40e_status err = 0;
6156         struct i40e_hw *hw = &pf->hw;
6157         int v_budget, i;
6158         int vec;
6159
6160         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6161                 return -ENODEV;
6162
6163         /* The number of vectors we'll request will be comprised of:
6164          *   - Add 1 for "other" cause for Admin Queue events, etc.
6165          *   - The number of LAN queue pairs
6166          *      - Queues being used for RSS.
6167          *              We don't need as many as max_rss_size vectors.
6168          *              use rss_size instead in the calculation since that
6169          *              is governed by number of cpus in the system.
6170          *      - assumes symmetric Tx/Rx pairing
6171          *   - The number of VMDq pairs
6172          * Once we count this up, try the request.
6173          *
6174          * If we can't get what we want, we'll simplify to nearly nothing
6175          * and try again.  If that still fails, we punt.
6176          */
6177         pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
6178         pf->num_vmdq_msix = pf->num_vmdq_qps;
6179         v_budget = 1 + pf->num_lan_msix;
6180         v_budget += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6181         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6182                 v_budget++;
6183
6184         /* Scale down if necessary, and the rings will share vectors */
6185         v_budget = min_t(int, v_budget, hw->func_caps.num_msix_vectors);
6186
6187         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6188                                    GFP_KERNEL);
6189         if (!pf->msix_entries)
6190                 return -ENOMEM;
6191
6192         for (i = 0; i < v_budget; i++)
6193                 pf->msix_entries[i].entry = i;
6194         vec = i40e_reserve_msix_vectors(pf, v_budget);
6195         if (vec < I40E_MIN_MSIX) {
6196                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6197                 kfree(pf->msix_entries);
6198                 pf->msix_entries = NULL;
6199                 return -ENODEV;
6200
6201         } else if (vec == I40E_MIN_MSIX) {
6202                 /* Adjust for minimal MSIX use */
6203                 dev_info(&pf->pdev->dev, "Features disabled, not enough MSI-X vectors\n");
6204                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
6205                 pf->num_vmdq_vsis = 0;
6206                 pf->num_vmdq_qps = 0;
6207                 pf->num_vmdq_msix = 0;
6208                 pf->num_lan_qps = 1;
6209                 pf->num_lan_msix = 1;
6210
6211         } else if (vec != v_budget) {
6212                 /* Scale vector usage down */
6213                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
6214                 vec--;                    /* reserve the misc vector */
6215
6216                 /* partition out the remaining vectors */
6217                 switch (vec) {
6218                 case 2:
6219                         pf->num_vmdq_vsis = 1;
6220                         pf->num_lan_msix = 1;
6221                         break;
6222                 case 3:
6223                         pf->num_vmdq_vsis = 1;
6224                         pf->num_lan_msix = 2;
6225                         break;
6226                 default:
6227                         pf->num_lan_msix = min_t(int, (vec / 2),
6228                                                  pf->num_lan_qps);
6229                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
6230                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
6231                         break;
6232                 }
6233         }
6234
6235         return err;
6236 }
6237
6238 /**
6239  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
6240  * @vsi: the VSI being configured
6241  * @v_idx: index of the vector in the vsi struct
6242  *
6243  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
6244  **/
6245 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
6246 {
6247         struct i40e_q_vector *q_vector;
6248
6249         /* allocate q_vector */
6250         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
6251         if (!q_vector)
6252                 return -ENOMEM;
6253
6254         q_vector->vsi = vsi;
6255         q_vector->v_idx = v_idx;
6256         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
6257         if (vsi->netdev)
6258                 netif_napi_add(vsi->netdev, &q_vector->napi,
6259                                i40e_napi_poll, vsi->work_limit);
6260
6261         q_vector->rx.latency_range = I40E_LOW_LATENCY;
6262         q_vector->tx.latency_range = I40E_LOW_LATENCY;
6263
6264         /* tie q_vector and vsi together */
6265         vsi->q_vectors[v_idx] = q_vector;
6266
6267         return 0;
6268 }
6269
6270 /**
6271  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
6272  * @vsi: the VSI being configured
6273  *
6274  * We allocate one q_vector per queue interrupt.  If allocation fails we
6275  * return -ENOMEM.
6276  **/
6277 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
6278 {
6279         struct i40e_pf *pf = vsi->back;
6280         int v_idx, num_q_vectors;
6281         int err;
6282
6283         /* if not MSIX, give the one vector only to the LAN VSI */
6284         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6285                 num_q_vectors = vsi->num_q_vectors;
6286         else if (vsi == pf->vsi[pf->lan_vsi])
6287                 num_q_vectors = 1;
6288         else
6289                 return -EINVAL;
6290
6291         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
6292                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
6293                 if (err)
6294                         goto err_out;
6295         }
6296
6297         return 0;
6298
6299 err_out:
6300         while (v_idx--)
6301                 i40e_free_q_vector(vsi, v_idx);
6302
6303         return err;
6304 }
6305
6306 /**
6307  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
6308  * @pf: board private structure to initialize
6309  **/
6310 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
6311 {
6312         int err = 0;
6313
6314         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
6315                 err = i40e_init_msix(pf);
6316                 if (err) {
6317                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
6318                                        I40E_FLAG_RSS_ENABLED    |
6319                                        I40E_FLAG_DCB_ENABLED    |
6320                                        I40E_FLAG_SRIOV_ENABLED  |
6321                                        I40E_FLAG_FD_SB_ENABLED  |
6322                                        I40E_FLAG_FD_ATR_ENABLED |
6323                                        I40E_FLAG_VMDQ_ENABLED);
6324
6325                         /* rework the queue expectations without MSIX */
6326                         i40e_determine_queue_usage(pf);
6327                 }
6328         }
6329
6330         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
6331             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
6332                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
6333                 err = pci_enable_msi(pf->pdev);
6334                 if (err) {
6335                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
6336                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
6337                 }
6338         }
6339
6340         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
6341                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
6342
6343         /* track first vector for misc interrupts */
6344         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
6345 }
6346
6347 /**
6348  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
6349  * @pf: board private structure
6350  *
6351  * This sets up the handler for MSIX 0, which is used to manage the
6352  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
6353  * when in MSI or Legacy interrupt mode.
6354  **/
6355 static int i40e_setup_misc_vector(struct i40e_pf *pf)
6356 {
6357         struct i40e_hw *hw = &pf->hw;
6358         int err = 0;
6359
6360         /* Only request the irq if this is the first time through, and
6361          * not when we're rebuilding after a Reset
6362          */
6363         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6364                 err = request_irq(pf->msix_entries[0].vector,
6365                                   i40e_intr, 0, pf->misc_int_name, pf);
6366                 if (err) {
6367                         dev_info(&pf->pdev->dev,
6368                                  "request_irq for %s failed: %d\n",
6369                                  pf->misc_int_name, err);
6370                         return -EFAULT;
6371                 }
6372         }
6373
6374         i40e_enable_misc_int_causes(hw);
6375
6376         /* associate no queues to the misc vector */
6377         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
6378         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
6379
6380         i40e_flush(hw);
6381
6382         i40e_irq_dynamic_enable_icr0(pf);
6383
6384         return err;
6385 }
6386
6387 /**
6388  * i40e_config_rss - Prepare for RSS if used
6389  * @pf: board private structure
6390  **/
6391 static int i40e_config_rss(struct i40e_pf *pf)
6392 {
6393         /* Set of random keys generated using kernel random number generator */
6394         static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
6395                                 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
6396                                 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
6397                                 0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
6398         struct i40e_hw *hw = &pf->hw;
6399         u32 lut = 0;
6400         int i, j;
6401         u64 hena;
6402
6403         /* Fill out hash function seed */
6404         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
6405                 wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
6406
6407         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
6408         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
6409                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
6410         hena |= I40E_DEFAULT_RSS_HENA;
6411         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
6412         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
6413
6414         /* Populate the LUT with max no. of queues in round robin fashion */
6415         for (i = 0, j = 0; i < pf->hw.func_caps.rss_table_size; i++, j++) {
6416
6417                 /* The assumption is that lan qp count will be the highest
6418                  * qp count for any PF VSI that needs RSS.
6419                  * If multiple VSIs need RSS support, all the qp counts
6420                  * for those VSIs should be a power of 2 for RSS to work.
6421                  * If LAN VSI is the only consumer for RSS then this requirement
6422                  * is not necessary.
6423                  */
6424                 if (j == pf->rss_size)
6425                         j = 0;
6426                 /* lut = 4-byte sliding window of 4 lut entries */
6427                 lut = (lut << 8) | (j &
6428                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
6429                 /* On i = 3, we have 4 entries in lut; write to the register */
6430                 if ((i & 3) == 3)
6431                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
6432         }
6433         i40e_flush(hw);
6434
6435         return 0;
6436 }
6437
6438 /**
6439  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
6440  * @pf: board private structure
6441  * @queue_count: the requested queue count for rss.
6442  *
6443  * returns 0 if rss is not enabled, if enabled returns the final rss queue
6444  * count which may be different from the requested queue count.
6445  **/
6446 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
6447 {
6448         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
6449                 return 0;
6450
6451         queue_count = min_t(int, queue_count, pf->rss_size_max);
6452         queue_count = rounddown_pow_of_two(queue_count);
6453
6454         if (queue_count != pf->rss_size) {
6455                 i40e_prep_for_reset(pf);
6456
6457                 pf->rss_size = queue_count;
6458
6459                 i40e_reset_and_rebuild(pf, true);
6460                 i40e_config_rss(pf);
6461         }
6462         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
6463         return pf->rss_size;
6464 }
6465
6466 /**
6467  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
6468  * @pf: board private structure to initialize
6469  *
6470  * i40e_sw_init initializes the Adapter private data structure.
6471  * Fields are initialized based on PCI device information and
6472  * OS network device settings (MTU size).
6473  **/
6474 static int i40e_sw_init(struct i40e_pf *pf)
6475 {
6476         int err = 0;
6477         int size;
6478
6479         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
6480                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
6481         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
6482         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
6483                 if (I40E_DEBUG_USER & debug)
6484                         pf->hw.debug_mask = debug;
6485                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
6486                                                 I40E_DEFAULT_MSG_ENABLE);
6487         }
6488
6489         /* Set default capability flags */
6490         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
6491                     I40E_FLAG_MSI_ENABLED     |
6492                     I40E_FLAG_MSIX_ENABLED    |
6493                     I40E_FLAG_RX_1BUF_ENABLED;
6494
6495         /* Set default ITR */
6496         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
6497         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
6498
6499         /* Depending on PF configurations, it is possible that the RSS
6500          * maximum might end up larger than the available queues
6501          */
6502         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
6503         pf->rss_size_max = min_t(int, pf->rss_size_max,
6504                                  pf->hw.func_caps.num_tx_qp);
6505         if (pf->hw.func_caps.rss) {
6506                 pf->flags |= I40E_FLAG_RSS_ENABLED;
6507                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
6508                 pf->rss_size = rounddown_pow_of_two(pf->rss_size);
6509         } else {
6510                 pf->rss_size = 1;
6511         }
6512
6513         /* MFP mode enabled */
6514         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
6515                 pf->flags |= I40E_FLAG_MFP_ENABLED;
6516                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
6517         }
6518
6519         /* FW/NVM is not yet fixed in this regard */
6520         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
6521             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
6522                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6523                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
6524                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
6525                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
6526                 } else {
6527                         dev_info(&pf->pdev->dev,
6528                                  "Flow Director Sideband mode Disabled in MFP mode\n");
6529                 }
6530                 pf->fdir_pf_filter_count =
6531                                  pf->hw.func_caps.fd_filters_guaranteed;
6532                 pf->hw.fdir_shared_filter_count =
6533                                  pf->hw.func_caps.fd_filters_best_effort;
6534         }
6535
6536         if (pf->hw.func_caps.vmdq) {
6537                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
6538                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
6539                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
6540         }
6541
6542 #ifdef CONFIG_PCI_IOV
6543         if (pf->hw.func_caps.num_vfs) {
6544                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
6545                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
6546                 pf->num_req_vfs = min_t(int,
6547                                         pf->hw.func_caps.num_vfs,
6548                                         I40E_MAX_VF_COUNT);
6549         }
6550 #endif /* CONFIG_PCI_IOV */
6551         pf->eeprom_version = 0xDEAD;
6552         pf->lan_veb = I40E_NO_VEB;
6553         pf->lan_vsi = I40E_NO_VSI;
6554
6555         /* set up queue assignment tracking */
6556         size = sizeof(struct i40e_lump_tracking)
6557                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
6558         pf->qp_pile = kzalloc(size, GFP_KERNEL);
6559         if (!pf->qp_pile) {
6560                 err = -ENOMEM;
6561                 goto sw_init_done;
6562         }
6563         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
6564         pf->qp_pile->search_hint = 0;
6565
6566         /* set up vector assignment tracking */
6567         size = sizeof(struct i40e_lump_tracking)
6568                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
6569         pf->irq_pile = kzalloc(size, GFP_KERNEL);
6570         if (!pf->irq_pile) {
6571                 kfree(pf->qp_pile);
6572                 err = -ENOMEM;
6573                 goto sw_init_done;
6574         }
6575         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
6576         pf->irq_pile->search_hint = 0;
6577
6578         mutex_init(&pf->switch_mutex);
6579
6580 sw_init_done:
6581         return err;
6582 }
6583
6584 /**
6585  * i40e_set_ntuple - set the ntuple feature flag and take action
6586  * @pf: board private structure to initialize
6587  * @features: the feature set that the stack is suggesting
6588  *
6589  * returns a bool to indicate if reset needs to happen
6590  **/
6591 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
6592 {
6593         bool need_reset = false;
6594
6595         /* Check if Flow Director n-tuple support was enabled or disabled.  If
6596          * the state changed, we need to reset.
6597          */
6598         if (features & NETIF_F_NTUPLE) {
6599                 /* Enable filters and mark for reset */
6600                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6601                         need_reset = true;
6602                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
6603         } else {
6604                 /* turn off filters, mark for reset and clear SW filter list */
6605                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
6606                         need_reset = true;
6607                         i40e_fdir_filter_exit(pf);
6608                 }
6609                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6610                 /* if ATR was disabled it can be re-enabled. */
6611                 if (!(pf->flags & I40E_FLAG_FD_ATR_ENABLED))
6612                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6613         }
6614         return need_reset;
6615 }
6616
6617 /**
6618  * i40e_set_features - set the netdev feature flags
6619  * @netdev: ptr to the netdev being adjusted
6620  * @features: the feature set that the stack is suggesting
6621  **/
6622 static int i40e_set_features(struct net_device *netdev,
6623                              netdev_features_t features)
6624 {
6625         struct i40e_netdev_priv *np = netdev_priv(netdev);
6626         struct i40e_vsi *vsi = np->vsi;
6627         struct i40e_pf *pf = vsi->back;
6628         bool need_reset;
6629
6630         if (features & NETIF_F_HW_VLAN_CTAG_RX)
6631                 i40e_vlan_stripping_enable(vsi);
6632         else
6633                 i40e_vlan_stripping_disable(vsi);
6634
6635         need_reset = i40e_set_ntuple(pf, features);
6636
6637         if (need_reset)
6638                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
6639
6640         return 0;
6641 }
6642
6643 #ifdef CONFIG_I40E_VXLAN
6644 /**
6645  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
6646  * @pf: board private structure
6647  * @port: The UDP port to look up
6648  *
6649  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
6650  **/
6651 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
6652 {
6653         u8 i;
6654
6655         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6656                 if (pf->vxlan_ports[i] == port)
6657                         return i;
6658         }
6659
6660         return i;
6661 }
6662
6663 /**
6664  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
6665  * @netdev: This physical port's netdev
6666  * @sa_family: Socket Family that VXLAN is notifying us about
6667  * @port: New UDP port number that VXLAN started listening to
6668  **/
6669 static void i40e_add_vxlan_port(struct net_device *netdev,
6670                                 sa_family_t sa_family, __be16 port)
6671 {
6672         struct i40e_netdev_priv *np = netdev_priv(netdev);
6673         struct i40e_vsi *vsi = np->vsi;
6674         struct i40e_pf *pf = vsi->back;
6675         u8 next_idx;
6676         u8 idx;
6677
6678         if (sa_family == AF_INET6)
6679                 return;
6680
6681         idx = i40e_get_vxlan_port_idx(pf, port);
6682
6683         /* Check if port already exists */
6684         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6685                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
6686                 return;
6687         }
6688
6689         /* Now check if there is space to add the new port */
6690         next_idx = i40e_get_vxlan_port_idx(pf, 0);
6691
6692         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6693                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
6694                             ntohs(port));
6695                 return;
6696         }
6697
6698         /* New port: add it and mark its index in the bitmap */
6699         pf->vxlan_ports[next_idx] = port;
6700         pf->pending_vxlan_bitmap |= (1 << next_idx);
6701
6702         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6703 }
6704
6705 /**
6706  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
6707  * @netdev: This physical port's netdev
6708  * @sa_family: Socket Family that VXLAN is notifying us about
6709  * @port: UDP port number that VXLAN stopped listening to
6710  **/
6711 static void i40e_del_vxlan_port(struct net_device *netdev,
6712                                 sa_family_t sa_family, __be16 port)
6713 {
6714         struct i40e_netdev_priv *np = netdev_priv(netdev);
6715         struct i40e_vsi *vsi = np->vsi;
6716         struct i40e_pf *pf = vsi->back;
6717         u8 idx;
6718
6719         if (sa_family == AF_INET6)
6720                 return;
6721
6722         idx = i40e_get_vxlan_port_idx(pf, port);
6723
6724         /* Check if port already exists */
6725         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6726                 /* if port exists, set it to 0 (mark for deletion)
6727                  * and make it pending
6728                  */
6729                 pf->vxlan_ports[idx] = 0;
6730
6731                 pf->pending_vxlan_bitmap |= (1 << idx);
6732
6733                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6734         } else {
6735                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
6736                             ntohs(port));
6737         }
6738 }
6739
6740 #endif
6741 #ifdef HAVE_FDB_OPS
6742 #ifdef USE_CONST_DEV_UC_CHAR
6743 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
6744                             struct net_device *dev,
6745                             const unsigned char *addr,
6746                             u16 flags)
6747 #else
6748 static int i40e_ndo_fdb_add(struct ndmsg *ndm,
6749                             struct net_device *dev,
6750                             unsigned char *addr,
6751                             u16 flags)
6752 #endif
6753 {
6754         struct i40e_netdev_priv *np = netdev_priv(dev);
6755         struct i40e_pf *pf = np->vsi->back;
6756         int err = 0;
6757
6758         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
6759                 return -EOPNOTSUPP;
6760
6761         /* Hardware does not support aging addresses so if a
6762          * ndm_state is given only allow permanent addresses
6763          */
6764         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
6765                 netdev_info(dev, "FDB only supports static addresses\n");
6766                 return -EINVAL;
6767         }
6768
6769         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
6770                 err = dev_uc_add_excl(dev, addr);
6771         else if (is_multicast_ether_addr(addr))
6772                 err = dev_mc_add_excl(dev, addr);
6773         else
6774                 err = -EINVAL;
6775
6776         /* Only return duplicate errors if NLM_F_EXCL is set */
6777         if (err == -EEXIST && !(flags & NLM_F_EXCL))
6778                 err = 0;
6779
6780         return err;
6781 }
6782
6783 #ifndef USE_DEFAULT_FDB_DEL_DUMP
6784 #ifdef USE_CONST_DEV_UC_CHAR
6785 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
6786                             struct net_device *dev,
6787                             const unsigned char *addr)
6788 #else
6789 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
6790                             struct net_device *dev,
6791                             unsigned char *addr)
6792 #endif
6793 {
6794         struct i40e_netdev_priv *np = netdev_priv(dev);
6795         struct i40e_pf *pf = np->vsi->back;
6796         int err = -EOPNOTSUPP;
6797
6798         if (ndm->ndm_state & NUD_PERMANENT) {
6799                 netdev_info(dev, "FDB only supports static addresses\n");
6800                 return -EINVAL;
6801         }
6802
6803         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
6804                 if (is_unicast_ether_addr(addr))
6805                         err = dev_uc_del(dev, addr);
6806                 else if (is_multicast_ether_addr(addr))
6807                         err = dev_mc_del(dev, addr);
6808                 else
6809                         err = -EINVAL;
6810         }
6811
6812         return err;
6813 }
6814
6815 static int i40e_ndo_fdb_dump(struct sk_buff *skb,
6816                              struct netlink_callback *cb,
6817                              struct net_device *dev,
6818                              int idx)
6819 {
6820         struct i40e_netdev_priv *np = netdev_priv(dev);
6821         struct i40e_pf *pf = np->vsi->back;
6822
6823         if (pf->flags & I40E_FLAG_SRIOV_ENABLED)
6824                 idx = ndo_dflt_fdb_dump(skb, cb, dev, idx);
6825
6826         return idx;
6827 }
6828
6829 #endif /* USE_DEFAULT_FDB_DEL_DUMP */
6830 #endif /* HAVE_FDB_OPS */
6831 static const struct net_device_ops i40e_netdev_ops = {
6832         .ndo_open               = i40e_open,
6833         .ndo_stop               = i40e_close,
6834         .ndo_start_xmit         = i40e_lan_xmit_frame,
6835         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
6836         .ndo_set_rx_mode        = i40e_set_rx_mode,
6837         .ndo_validate_addr      = eth_validate_addr,
6838         .ndo_set_mac_address    = i40e_set_mac,
6839         .ndo_change_mtu         = i40e_change_mtu,
6840         .ndo_do_ioctl           = i40e_ioctl,
6841         .ndo_tx_timeout         = i40e_tx_timeout,
6842         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
6843         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
6844 #ifdef CONFIG_NET_POLL_CONTROLLER
6845         .ndo_poll_controller    = i40e_netpoll,
6846 #endif
6847         .ndo_setup_tc           = i40e_setup_tc,
6848         .ndo_set_features       = i40e_set_features,
6849         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
6850         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
6851         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
6852         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
6853         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
6854 #ifdef CONFIG_I40E_VXLAN
6855         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
6856         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
6857 #endif
6858 #ifdef HAVE_FDB_OPS
6859         .ndo_fdb_add            = i40e_ndo_fdb_add,
6860 #ifndef USE_DEFAULT_FDB_DEL_DUMP
6861         .ndo_fdb_del            = i40e_ndo_fdb_del,
6862         .ndo_fdb_dump           = i40e_ndo_fdb_dump,
6863 #endif
6864 #endif
6865 };
6866
6867 /**
6868  * i40e_config_netdev - Setup the netdev flags
6869  * @vsi: the VSI being configured
6870  *
6871  * Returns 0 on success, negative value on failure
6872  **/
6873 static int i40e_config_netdev(struct i40e_vsi *vsi)
6874 {
6875         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
6876         struct i40e_pf *pf = vsi->back;
6877         struct i40e_hw *hw = &pf->hw;
6878         struct i40e_netdev_priv *np;
6879         struct net_device *netdev;
6880         u8 mac_addr[ETH_ALEN];
6881         int etherdev_size;
6882
6883         etherdev_size = sizeof(struct i40e_netdev_priv);
6884         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
6885         if (!netdev)
6886                 return -ENOMEM;
6887
6888         vsi->netdev = netdev;
6889         np = netdev_priv(netdev);
6890         np->vsi = vsi;
6891
6892         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
6893                                   NETIF_F_GSO_UDP_TUNNEL |
6894                                   NETIF_F_TSO;
6895
6896         netdev->features = NETIF_F_SG                  |
6897                            NETIF_F_IP_CSUM             |
6898                            NETIF_F_SCTP_CSUM           |
6899                            NETIF_F_HIGHDMA             |
6900                            NETIF_F_GSO_UDP_TUNNEL      |
6901                            NETIF_F_HW_VLAN_CTAG_TX     |
6902                            NETIF_F_HW_VLAN_CTAG_RX     |
6903                            NETIF_F_HW_VLAN_CTAG_FILTER |
6904                            NETIF_F_IPV6_CSUM           |
6905                            NETIF_F_TSO                 |
6906                            NETIF_F_TSO_ECN             |
6907                            NETIF_F_TSO6                |
6908                            NETIF_F_RXCSUM              |
6909                            NETIF_F_RXHASH              |
6910                            0;
6911
6912         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
6913                 netdev->features |= NETIF_F_NTUPLE;
6914
6915         /* copy netdev features into list of user selectable features */
6916         netdev->hw_features |= netdev->features;
6917
6918         if (vsi->type == I40E_VSI_MAIN) {
6919                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
6920                 memcpy(mac_addr, hw->mac.perm_addr, ETH_ALEN);
6921         } else {
6922                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
6923                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
6924                          pf->vsi[pf->lan_vsi]->netdev->name);
6925                 random_ether_addr(mac_addr);
6926                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
6927         }
6928         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
6929
6930         memcpy(netdev->dev_addr, mac_addr, ETH_ALEN);
6931         memcpy(netdev->perm_addr, mac_addr, ETH_ALEN);
6932         /* vlan gets same features (except vlan offload)
6933          * after any tweaks for specific VSI types
6934          */
6935         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
6936                                                      NETIF_F_HW_VLAN_CTAG_RX |
6937                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
6938         netdev->priv_flags |= IFF_UNICAST_FLT;
6939         netdev->priv_flags |= IFF_SUPP_NOFCS;
6940         /* Setup netdev TC information */
6941         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
6942
6943         netdev->netdev_ops = &i40e_netdev_ops;
6944         netdev->watchdog_timeo = 5 * HZ;
6945         i40e_set_ethtool_ops(netdev);
6946
6947         return 0;
6948 }
6949
6950 /**
6951  * i40e_vsi_delete - Delete a VSI from the switch
6952  * @vsi: the VSI being removed
6953  *
6954  * Returns 0 on success, negative value on failure
6955  **/
6956 static void i40e_vsi_delete(struct i40e_vsi *vsi)
6957 {
6958         /* remove default VSI is not allowed */
6959         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
6960                 return;
6961
6962         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
6963 }
6964
6965 /**
6966  * i40e_add_vsi - Add a VSI to the switch
6967  * @vsi: the VSI being configured
6968  *
6969  * This initializes a VSI context depending on the VSI type to be added and
6970  * passes it down to the add_vsi aq command.
6971  **/
6972 static int i40e_add_vsi(struct i40e_vsi *vsi)
6973 {
6974         int ret = -ENODEV;
6975         struct i40e_mac_filter *f, *ftmp;
6976         struct i40e_pf *pf = vsi->back;
6977         struct i40e_hw *hw = &pf->hw;
6978         struct i40e_vsi_context ctxt;
6979         u8 enabled_tc = 0x1; /* TC0 enabled */
6980         int f_count = 0;
6981
6982         memset(&ctxt, 0, sizeof(ctxt));
6983         switch (vsi->type) {
6984         case I40E_VSI_MAIN:
6985                 /* The PF's main VSI is already setup as part of the
6986                  * device initialization, so we'll not bother with
6987                  * the add_vsi call, but we will retrieve the current
6988                  * VSI context.
6989                  */
6990                 ctxt.seid = pf->main_vsi_seid;
6991                 ctxt.pf_num = pf->hw.pf_id;
6992                 ctxt.vf_num = 0;
6993                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6994                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6995                 if (ret) {
6996                         dev_info(&pf->pdev->dev,
6997                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
6998                                  ret, pf->hw.aq.asq_last_status);
6999                         return -ENOENT;
7000                 }
7001                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7002                 vsi->info.valid_sections = 0;
7003
7004                 vsi->seid = ctxt.seid;
7005                 vsi->id = ctxt.vsi_number;
7006
7007                 enabled_tc = i40e_pf_get_tc_map(pf);
7008
7009                 /* MFP mode setup queue map and update VSI */
7010                 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
7011                         memset(&ctxt, 0, sizeof(ctxt));
7012                         ctxt.seid = pf->main_vsi_seid;
7013                         ctxt.pf_num = pf->hw.pf_id;
7014                         ctxt.vf_num = 0;
7015                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
7016                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
7017                         if (ret) {
7018                                 dev_info(&pf->pdev->dev,
7019                                          "update vsi failed, aq_err=%d\n",
7020                                          pf->hw.aq.asq_last_status);
7021                                 ret = -ENOENT;
7022                                 goto err;
7023                         }
7024                         /* update the local VSI info queue map */
7025                         i40e_vsi_update_queue_map(vsi, &ctxt);
7026                         vsi->info.valid_sections = 0;
7027                 } else {
7028                         /* Default/Main VSI is only enabled for TC0
7029                          * reconfigure it to enable all TCs that are
7030                          * available on the port in SFP mode.
7031                          */
7032                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
7033                         if (ret) {
7034                                 dev_info(&pf->pdev->dev,
7035                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
7036                                          enabled_tc, ret,
7037                                          pf->hw.aq.asq_last_status);
7038                                 ret = -ENOENT;
7039                         }
7040                 }
7041                 break;
7042
7043         case I40E_VSI_FDIR:
7044                 ctxt.pf_num = hw->pf_id;
7045                 ctxt.vf_num = 0;
7046                 ctxt.uplink_seid = vsi->uplink_seid;
7047                 ctxt.connection_type = 0x1;     /* regular data port */
7048                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7049                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7050                 break;
7051
7052         case I40E_VSI_VMDQ2:
7053                 ctxt.pf_num = hw->pf_id;
7054                 ctxt.vf_num = 0;
7055                 ctxt.uplink_seid = vsi->uplink_seid;
7056                 ctxt.connection_type = 0x1;     /* regular data port */
7057                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
7058
7059                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7060
7061                 /* This VSI is connected to VEB so the switch_id
7062                  * should be set to zero by default.
7063                  */
7064                 ctxt.info.switch_id = 0;
7065                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
7066                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7067
7068                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7069                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7070                 break;
7071
7072         case I40E_VSI_SRIOV:
7073                 ctxt.pf_num = hw->pf_id;
7074                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
7075                 ctxt.uplink_seid = vsi->uplink_seid;
7076                 ctxt.connection_type = 0x1;     /* regular data port */
7077                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
7078
7079                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7080
7081                 /* This VSI is connected to VEB so the switch_id
7082                  * should be set to zero by default.
7083                  */
7084                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7085
7086                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
7087                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
7088                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7089                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7090                 break;
7091
7092         default:
7093                 return -ENODEV;
7094         }
7095
7096         if (vsi->type != I40E_VSI_MAIN) {
7097                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
7098                 if (ret) {
7099                         dev_info(&vsi->back->pdev->dev,
7100                                  "add vsi failed, aq_err=%d\n",
7101                                  vsi->back->hw.aq.asq_last_status);
7102                         ret = -ENOENT;
7103                         goto err;
7104                 }
7105                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7106                 vsi->info.valid_sections = 0;
7107                 vsi->seid = ctxt.seid;
7108                 vsi->id = ctxt.vsi_number;
7109         }
7110
7111         /* If macvlan filters already exist, force them to get loaded */
7112         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
7113                 f->changed = true;
7114                 f_count++;
7115         }
7116         if (f_count) {
7117                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
7118                 pf->flags |= I40E_FLAG_FILTER_SYNC;
7119         }
7120
7121         /* Update VSI BW information */
7122         ret = i40e_vsi_get_bw_info(vsi);
7123         if (ret) {
7124                 dev_info(&pf->pdev->dev,
7125                          "couldn't get vsi bw info, err %d, aq_err %d\n",
7126                          ret, pf->hw.aq.asq_last_status);
7127                 /* VSI is already added so not tearing that up */
7128                 ret = 0;
7129         }
7130
7131 err:
7132         return ret;
7133 }
7134
7135 /**
7136  * i40e_vsi_release - Delete a VSI and free its resources
7137  * @vsi: the VSI being removed
7138  *
7139  * Returns 0 on success or < 0 on error
7140  **/
7141 int i40e_vsi_release(struct i40e_vsi *vsi)
7142 {
7143         struct i40e_mac_filter *f, *ftmp;
7144         struct i40e_veb *veb = NULL;
7145         struct i40e_pf *pf;
7146         u16 uplink_seid;
7147         int i, n;
7148
7149         pf = vsi->back;
7150
7151         /* release of a VEB-owner or last VSI is not allowed */
7152         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
7153                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
7154                          vsi->seid, vsi->uplink_seid);
7155                 return -ENODEV;
7156         }
7157         if (vsi == pf->vsi[pf->lan_vsi] &&
7158             !test_bit(__I40E_DOWN, &pf->state)) {
7159                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
7160                 return -ENODEV;
7161         }
7162
7163         uplink_seid = vsi->uplink_seid;
7164         if (vsi->type != I40E_VSI_SRIOV) {
7165                 if (vsi->netdev_registered) {
7166                         vsi->netdev_registered = false;
7167                         if (vsi->netdev) {
7168                                 /* results in a call to i40e_close() */
7169                                 unregister_netdev(vsi->netdev);
7170                         }
7171                 } else {
7172                         i40e_vsi_close(vsi);
7173                 }
7174                 i40e_vsi_disable_irq(vsi);
7175         }
7176
7177         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
7178                 i40e_del_filter(vsi, f->macaddr, f->vlan,
7179                                 f->is_vf, f->is_netdev);
7180         i40e_sync_vsi_filters(vsi);
7181
7182         i40e_vsi_delete(vsi);
7183         i40e_vsi_free_q_vectors(vsi);
7184         if (vsi->netdev) {
7185                 free_netdev(vsi->netdev);
7186                 vsi->netdev = NULL;
7187         }
7188         i40e_vsi_clear_rings(vsi);
7189         i40e_vsi_clear(vsi);
7190
7191         /* If this was the last thing on the VEB, except for the
7192          * controlling VSI, remove the VEB, which puts the controlling
7193          * VSI onto the next level down in the switch.
7194          *
7195          * Well, okay, there's one more exception here: don't remove
7196          * the orphan VEBs yet.  We'll wait for an explicit remove request
7197          * from up the network stack.
7198          */
7199         for (n = 0, i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7200                 if (pf->vsi[i] &&
7201                     pf->vsi[i]->uplink_seid == uplink_seid &&
7202                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7203                         n++;      /* count the VSIs */
7204                 }
7205         }
7206         for (i = 0; i < I40E_MAX_VEB; i++) {
7207                 if (!pf->veb[i])
7208                         continue;
7209                 if (pf->veb[i]->uplink_seid == uplink_seid)
7210                         n++;     /* count the VEBs */
7211                 if (pf->veb[i]->seid == uplink_seid)
7212                         veb = pf->veb[i];
7213         }
7214         if (n == 0 && veb && veb->uplink_seid != 0)
7215                 i40e_veb_release(veb);
7216
7217         return 0;
7218 }
7219
7220 /**
7221  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
7222  * @vsi: ptr to the VSI
7223  *
7224  * This should only be called after i40e_vsi_mem_alloc() which allocates the
7225  * corresponding SW VSI structure and initializes num_queue_pairs for the
7226  * newly allocated VSI.
7227  *
7228  * Returns 0 on success or negative on failure
7229  **/
7230 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
7231 {
7232         int ret = -ENOENT;
7233         struct i40e_pf *pf = vsi->back;
7234
7235         if (vsi->q_vectors[0]) {
7236                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
7237                          vsi->seid);
7238                 return -EEXIST;
7239         }
7240
7241         if (vsi->base_vector) {
7242                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
7243                          vsi->seid, vsi->base_vector);
7244                 return -EEXIST;
7245         }
7246
7247         ret = i40e_vsi_alloc_q_vectors(vsi);
7248         if (ret) {
7249                 dev_info(&pf->pdev->dev,
7250                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
7251                          vsi->num_q_vectors, vsi->seid, ret);
7252                 vsi->num_q_vectors = 0;
7253                 goto vector_setup_out;
7254         }
7255
7256         if (vsi->num_q_vectors)
7257                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
7258                                                  vsi->num_q_vectors, vsi->idx);
7259         if (vsi->base_vector < 0) {
7260                 dev_info(&pf->pdev->dev,
7261                          "failed to get queue tracking for VSI %d, err=%d\n",
7262                          vsi->seid, vsi->base_vector);
7263                 i40e_vsi_free_q_vectors(vsi);
7264                 ret = -ENOENT;
7265                 goto vector_setup_out;
7266         }
7267
7268 vector_setup_out:
7269         return ret;
7270 }
7271
7272 /**
7273  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
7274  * @vsi: pointer to the vsi.
7275  *
7276  * This re-allocates a vsi's queue resources.
7277  *
7278  * Returns pointer to the successfully allocated and configured VSI sw struct
7279  * on success, otherwise returns NULL on failure.
7280  **/
7281 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
7282 {
7283         struct i40e_pf *pf = vsi->back;
7284         u8 enabled_tc;
7285         int ret;
7286
7287         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7288         i40e_vsi_clear_rings(vsi);
7289
7290         i40e_vsi_free_arrays(vsi, false);
7291         i40e_set_num_rings_in_vsi(vsi);
7292         ret = i40e_vsi_alloc_arrays(vsi, false);
7293         if (ret)
7294                 goto err_vsi;
7295
7296         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
7297         if (ret < 0) {
7298                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7299                          vsi->seid, ret);
7300                 goto err_vsi;
7301         }
7302         vsi->base_queue = ret;
7303
7304         /* Update the FW view of the VSI. Force a reset of TC and queue
7305          * layout configurations.
7306          */
7307         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
7308         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
7309         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
7310         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
7311
7312         /* assign it some queues */
7313         ret = i40e_alloc_rings(vsi);
7314         if (ret)
7315                 goto err_rings;
7316
7317         /* map all of the rings to the q_vectors */
7318         i40e_vsi_map_rings_to_vectors(vsi);
7319         return vsi;
7320
7321 err_rings:
7322         i40e_vsi_free_q_vectors(vsi);
7323         if (vsi->netdev_registered) {
7324                 vsi->netdev_registered = false;
7325                 unregister_netdev(vsi->netdev);
7326                 free_netdev(vsi->netdev);
7327                 vsi->netdev = NULL;
7328         }
7329         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
7330 err_vsi:
7331         i40e_vsi_clear(vsi);
7332         return NULL;
7333 }
7334
7335 /**
7336  * i40e_vsi_setup - Set up a VSI by a given type
7337  * @pf: board private structure
7338  * @type: VSI type
7339  * @uplink_seid: the switch element to link to
7340  * @param1: usage depends upon VSI type. For VF types, indicates VF id
7341  *
7342  * This allocates the sw VSI structure and its queue resources, then add a VSI
7343  * to the identified VEB.
7344  *
7345  * Returns pointer to the successfully allocated and configure VSI sw struct on
7346  * success, otherwise returns NULL on failure.
7347  **/
7348 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
7349                                 u16 uplink_seid, u32 param1)
7350 {
7351         struct i40e_vsi *vsi = NULL;
7352         struct i40e_veb *veb = NULL;
7353         int ret, i;
7354         int v_idx;
7355
7356         /* The requested uplink_seid must be either
7357          *     - the PF's port seid
7358          *              no VEB is needed because this is the PF
7359          *              or this is a Flow Director special case VSI
7360          *     - seid of an existing VEB
7361          *     - seid of a VSI that owns an existing VEB
7362          *     - seid of a VSI that doesn't own a VEB
7363          *              a new VEB is created and the VSI becomes the owner
7364          *     - seid of the PF VSI, which is what creates the first VEB
7365          *              this is a special case of the previous
7366          *
7367          * Find which uplink_seid we were given and create a new VEB if needed
7368          */
7369         for (i = 0; i < I40E_MAX_VEB; i++) {
7370                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
7371                         veb = pf->veb[i];
7372                         break;
7373                 }
7374         }
7375
7376         if (!veb && uplink_seid != pf->mac_seid) {
7377
7378                 for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7379                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
7380                                 vsi = pf->vsi[i];
7381                                 break;
7382                         }
7383                 }
7384                 if (!vsi) {
7385                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
7386                                  uplink_seid);
7387                         return NULL;
7388                 }
7389
7390                 if (vsi->uplink_seid == pf->mac_seid)
7391                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
7392                                              vsi->tc_config.enabled_tc);
7393                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
7394                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
7395                                              vsi->tc_config.enabled_tc);
7396
7397                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7398                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7399                                 veb = pf->veb[i];
7400                 }
7401                 if (!veb) {
7402                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
7403                         return NULL;
7404                 }
7405
7406                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
7407                 uplink_seid = veb->seid;
7408         }
7409
7410         /* get vsi sw struct */
7411         v_idx = i40e_vsi_mem_alloc(pf, type);
7412         if (v_idx < 0)
7413                 goto err_alloc;
7414         vsi = pf->vsi[v_idx];
7415         if (!vsi)
7416                 goto err_alloc;
7417         vsi->type = type;
7418         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
7419
7420         if (type == I40E_VSI_MAIN)
7421                 pf->lan_vsi = v_idx;
7422         else if (type == I40E_VSI_SRIOV)
7423                 vsi->vf_id = param1;
7424         /* assign it some queues */
7425         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
7426                                 vsi->idx);
7427         if (ret < 0) {
7428                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7429                          vsi->seid, ret);
7430                 goto err_vsi;
7431         }
7432         vsi->base_queue = ret;
7433
7434         /* get a VSI from the hardware */
7435         vsi->uplink_seid = uplink_seid;
7436         ret = i40e_add_vsi(vsi);
7437         if (ret)
7438                 goto err_vsi;
7439
7440         switch (vsi->type) {
7441         /* setup the netdev if needed */
7442         case I40E_VSI_MAIN:
7443         case I40E_VSI_VMDQ2:
7444                 ret = i40e_config_netdev(vsi);
7445                 if (ret)
7446                         goto err_netdev;
7447                 ret = register_netdev(vsi->netdev);
7448                 if (ret)
7449                         goto err_netdev;
7450                 vsi->netdev_registered = true;
7451                 netif_carrier_off(vsi->netdev);
7452 #ifdef CONFIG_I40E_DCB
7453                 /* Setup DCB netlink interface */
7454                 i40e_dcbnl_setup(vsi);
7455 #endif /* CONFIG_I40E_DCB */
7456                 /* fall through */
7457
7458         case I40E_VSI_FDIR:
7459                 /* set up vectors and rings if needed */
7460                 ret = i40e_vsi_setup_vectors(vsi);
7461                 if (ret)
7462                         goto err_msix;
7463
7464                 ret = i40e_alloc_rings(vsi);
7465                 if (ret)
7466                         goto err_rings;
7467
7468                 /* map all of the rings to the q_vectors */
7469                 i40e_vsi_map_rings_to_vectors(vsi);
7470
7471                 i40e_vsi_reset_stats(vsi);
7472                 break;
7473
7474         default:
7475                 /* no netdev or rings for the other VSI types */
7476                 break;
7477         }
7478
7479         return vsi;
7480
7481 err_rings:
7482         i40e_vsi_free_q_vectors(vsi);
7483 err_msix:
7484         if (vsi->netdev_registered) {
7485                 vsi->netdev_registered = false;
7486                 unregister_netdev(vsi->netdev);
7487                 free_netdev(vsi->netdev);
7488                 vsi->netdev = NULL;
7489         }
7490 err_netdev:
7491         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
7492 err_vsi:
7493         i40e_vsi_clear(vsi);
7494 err_alloc:
7495         return NULL;
7496 }
7497
7498 /**
7499  * i40e_veb_get_bw_info - Query VEB BW information
7500  * @veb: the veb to query
7501  *
7502  * Query the Tx scheduler BW configuration data for given VEB
7503  **/
7504 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
7505 {
7506         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
7507         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
7508         struct i40e_pf *pf = veb->pf;
7509         struct i40e_hw *hw = &pf->hw;
7510         u32 tc_bw_max;
7511         int ret = 0;
7512         int i;
7513
7514         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
7515                                                   &bw_data, NULL);
7516         if (ret) {
7517                 dev_info(&pf->pdev->dev,
7518                          "query veb bw config failed, aq_err=%d\n",
7519                          hw->aq.asq_last_status);
7520                 goto out;
7521         }
7522
7523         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
7524                                                    &ets_data, NULL);
7525         if (ret) {
7526                 dev_info(&pf->pdev->dev,
7527                          "query veb bw ets config failed, aq_err=%d\n",
7528                          hw->aq.asq_last_status);
7529                 goto out;
7530         }
7531
7532         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
7533         veb->bw_max_quanta = ets_data.tc_bw_max;
7534         veb->is_abs_credits = bw_data.absolute_credits_enable;
7535         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
7536                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
7537         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
7538                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
7539                 veb->bw_tc_limit_credits[i] =
7540                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
7541                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
7542         }
7543
7544 out:
7545         return ret;
7546 }
7547
7548 /**
7549  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
7550  * @pf: board private structure
7551  *
7552  * On error: returns error code (negative)
7553  * On success: returns vsi index in PF (positive)
7554  **/
7555 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
7556 {
7557         int ret = -ENOENT;
7558         struct i40e_veb *veb;
7559         int i;
7560
7561         /* Need to protect the allocation of switch elements at the PF level */
7562         mutex_lock(&pf->switch_mutex);
7563
7564         /* VEB list may be fragmented if VEB creation/destruction has
7565          * been happening.  We can afford to do a quick scan to look
7566          * for any free slots in the list.
7567          *
7568          * find next empty veb slot, looping back around if necessary
7569          */
7570         i = 0;
7571         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
7572                 i++;
7573         if (i >= I40E_MAX_VEB) {
7574                 ret = -ENOMEM;
7575                 goto err_alloc_veb;  /* out of VEB slots! */
7576         }
7577
7578         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
7579         if (!veb) {
7580                 ret = -ENOMEM;
7581                 goto err_alloc_veb;
7582         }
7583         veb->pf = pf;
7584         veb->idx = i;
7585         veb->enabled_tc = 1;
7586
7587         pf->veb[i] = veb;
7588         ret = i;
7589 err_alloc_veb:
7590         mutex_unlock(&pf->switch_mutex);
7591         return ret;
7592 }
7593
7594 /**
7595  * i40e_switch_branch_release - Delete a branch of the switch tree
7596  * @branch: where to start deleting
7597  *
7598  * This uses recursion to find the tips of the branch to be
7599  * removed, deleting until we get back to and can delete this VEB.
7600  **/
7601 static void i40e_switch_branch_release(struct i40e_veb *branch)
7602 {
7603         struct i40e_pf *pf = branch->pf;
7604         u16 branch_seid = branch->seid;
7605         u16 veb_idx = branch->idx;
7606         int i;
7607
7608         /* release any VEBs on this VEB - RECURSION */
7609         for (i = 0; i < I40E_MAX_VEB; i++) {
7610                 if (!pf->veb[i])
7611                         continue;
7612                 if (pf->veb[i]->uplink_seid == branch->seid)
7613                         i40e_switch_branch_release(pf->veb[i]);
7614         }
7615
7616         /* Release the VSIs on this VEB, but not the owner VSI.
7617          *
7618          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
7619          *       the VEB itself, so don't use (*branch) after this loop.
7620          */
7621         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7622                 if (!pf->vsi[i])
7623                         continue;
7624                 if (pf->vsi[i]->uplink_seid == branch_seid &&
7625                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7626                         i40e_vsi_release(pf->vsi[i]);
7627                 }
7628         }
7629
7630         /* There's one corner case where the VEB might not have been
7631          * removed, so double check it here and remove it if needed.
7632          * This case happens if the veb was created from the debugfs
7633          * commands and no VSIs were added to it.
7634          */
7635         if (pf->veb[veb_idx])
7636                 i40e_veb_release(pf->veb[veb_idx]);
7637 }
7638
7639 /**
7640  * i40e_veb_clear - remove veb struct
7641  * @veb: the veb to remove
7642  **/
7643 static void i40e_veb_clear(struct i40e_veb *veb)
7644 {
7645         if (!veb)
7646                 return;
7647
7648         if (veb->pf) {
7649                 struct i40e_pf *pf = veb->pf;
7650
7651                 mutex_lock(&pf->switch_mutex);
7652                 if (pf->veb[veb->idx] == veb)
7653                         pf->veb[veb->idx] = NULL;
7654                 mutex_unlock(&pf->switch_mutex);
7655         }
7656
7657         kfree(veb);
7658 }
7659
7660 /**
7661  * i40e_veb_release - Delete a VEB and free its resources
7662  * @veb: the VEB being removed
7663  **/
7664 void i40e_veb_release(struct i40e_veb *veb)
7665 {
7666         struct i40e_vsi *vsi = NULL;
7667         struct i40e_pf *pf;
7668         int i, n = 0;
7669
7670         pf = veb->pf;
7671
7672         /* find the remaining VSI and check for extras */
7673         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
7674                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
7675                         n++;
7676                         vsi = pf->vsi[i];
7677                 }
7678         }
7679         if (n != 1) {
7680                 dev_info(&pf->pdev->dev,
7681                          "can't remove VEB %d with %d VSIs left\n",
7682                          veb->seid, n);
7683                 return;
7684         }
7685
7686         /* move the remaining VSI to uplink veb */
7687         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
7688         if (veb->uplink_seid) {
7689                 vsi->uplink_seid = veb->uplink_seid;
7690                 if (veb->uplink_seid == pf->mac_seid)
7691                         vsi->veb_idx = I40E_NO_VEB;
7692                 else
7693                         vsi->veb_idx = veb->veb_idx;
7694         } else {
7695                 /* floating VEB */
7696                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
7697                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
7698         }
7699
7700         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
7701         i40e_veb_clear(veb);
7702 }
7703
7704 /**
7705  * i40e_add_veb - create the VEB in the switch
7706  * @veb: the VEB to be instantiated
7707  * @vsi: the controlling VSI
7708  **/
7709 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
7710 {
7711         bool is_default = false;
7712         bool is_cloud = false;
7713         int ret;
7714
7715         /* get a VEB from the hardware */
7716         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
7717                               veb->enabled_tc, is_default,
7718                               is_cloud, &veb->seid, NULL);
7719         if (ret) {
7720                 dev_info(&veb->pf->pdev->dev,
7721                          "couldn't add VEB, err %d, aq_err %d\n",
7722                          ret, veb->pf->hw.aq.asq_last_status);
7723                 return -EPERM;
7724         }
7725
7726         /* get statistics counter */
7727         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
7728                                          &veb->stats_idx, NULL, NULL, NULL);
7729         if (ret) {
7730                 dev_info(&veb->pf->pdev->dev,
7731                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
7732                          ret, veb->pf->hw.aq.asq_last_status);
7733                 return -EPERM;
7734         }
7735         ret = i40e_veb_get_bw_info(veb);
7736         if (ret) {
7737                 dev_info(&veb->pf->pdev->dev,
7738                          "couldn't get VEB bw info, err %d, aq_err %d\n",
7739                          ret, veb->pf->hw.aq.asq_last_status);
7740                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
7741                 return -ENOENT;
7742         }
7743
7744         vsi->uplink_seid = veb->seid;
7745         vsi->veb_idx = veb->idx;
7746         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
7747
7748         return 0;
7749 }
7750
7751 /**
7752  * i40e_veb_setup - Set up a VEB
7753  * @pf: board private structure
7754  * @flags: VEB setup flags
7755  * @uplink_seid: the switch element to link to
7756  * @vsi_seid: the initial VSI seid
7757  * @enabled_tc: Enabled TC bit-map
7758  *
7759  * This allocates the sw VEB structure and links it into the switch
7760  * It is possible and legal for this to be a duplicate of an already
7761  * existing VEB.  It is also possible for both uplink and vsi seids
7762  * to be zero, in order to create a floating VEB.
7763  *
7764  * Returns pointer to the successfully allocated VEB sw struct on
7765  * success, otherwise returns NULL on failure.
7766  **/
7767 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
7768                                 u16 uplink_seid, u16 vsi_seid,
7769                                 u8 enabled_tc)
7770 {
7771         struct i40e_veb *veb, *uplink_veb = NULL;
7772         int vsi_idx, veb_idx;
7773         int ret;
7774
7775         /* if one seid is 0, the other must be 0 to create a floating relay */
7776         if ((uplink_seid == 0 || vsi_seid == 0) &&
7777             (uplink_seid + vsi_seid != 0)) {
7778                 dev_info(&pf->pdev->dev,
7779                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
7780                          uplink_seid, vsi_seid);
7781                 return NULL;
7782         }
7783
7784         /* make sure there is such a vsi and uplink */
7785         for (vsi_idx = 0; vsi_idx < pf->hw.func_caps.num_vsis; vsi_idx++)
7786                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
7787                         break;
7788         if (vsi_idx >= pf->hw.func_caps.num_vsis && vsi_seid != 0) {
7789                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
7790                          vsi_seid);
7791                 return NULL;
7792         }
7793
7794         if (uplink_seid && uplink_seid != pf->mac_seid) {
7795                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
7796                         if (pf->veb[veb_idx] &&
7797                             pf->veb[veb_idx]->seid == uplink_seid) {
7798                                 uplink_veb = pf->veb[veb_idx];
7799                                 break;
7800                         }
7801                 }
7802                 if (!uplink_veb) {
7803                         dev_info(&pf->pdev->dev,
7804                                  "uplink seid %d not found\n", uplink_seid);
7805                         return NULL;
7806                 }
7807         }
7808
7809         /* get veb sw struct */
7810         veb_idx = i40e_veb_mem_alloc(pf);
7811         if (veb_idx < 0)
7812                 goto err_alloc;
7813         veb = pf->veb[veb_idx];
7814         veb->flags = flags;
7815         veb->uplink_seid = uplink_seid;
7816         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
7817         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
7818
7819         /* create the VEB in the switch */
7820         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
7821         if (ret)
7822                 goto err_veb;
7823         if (vsi_idx == pf->lan_vsi)
7824                 pf->lan_veb = veb->idx;
7825
7826         return veb;
7827
7828 err_veb:
7829         i40e_veb_clear(veb);
7830 err_alloc:
7831         return NULL;
7832 }
7833
7834 /**
7835  * i40e_setup_pf_switch_element - set pf vars based on switch type
7836  * @pf: board private structure
7837  * @ele: element we are building info from
7838  * @num_reported: total number of elements
7839  * @printconfig: should we print the contents
7840  *
7841  * helper function to assist in extracting a few useful SEID values.
7842  **/
7843 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
7844                                 struct i40e_aqc_switch_config_element_resp *ele,
7845                                 u16 num_reported, bool printconfig)
7846 {
7847         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
7848         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
7849         u8 element_type = ele->element_type;
7850         u16 seid = le16_to_cpu(ele->seid);
7851
7852         if (printconfig)
7853                 dev_info(&pf->pdev->dev,
7854                          "type=%d seid=%d uplink=%d downlink=%d\n",
7855                          element_type, seid, uplink_seid, downlink_seid);
7856
7857         switch (element_type) {
7858         case I40E_SWITCH_ELEMENT_TYPE_MAC:
7859                 pf->mac_seid = seid;
7860                 break;
7861         case I40E_SWITCH_ELEMENT_TYPE_VEB:
7862                 /* Main VEB? */
7863                 if (uplink_seid != pf->mac_seid)
7864                         break;
7865                 if (pf->lan_veb == I40E_NO_VEB) {
7866                         int v;
7867
7868                         /* find existing or else empty VEB */
7869                         for (v = 0; v < I40E_MAX_VEB; v++) {
7870                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
7871                                         pf->lan_veb = v;
7872                                         break;
7873                                 }
7874                         }
7875                         if (pf->lan_veb == I40E_NO_VEB) {
7876                                 v = i40e_veb_mem_alloc(pf);
7877                                 if (v < 0)
7878                                         break;
7879                                 pf->lan_veb = v;
7880                         }
7881                 }
7882
7883                 pf->veb[pf->lan_veb]->seid = seid;
7884                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
7885                 pf->veb[pf->lan_veb]->pf = pf;
7886                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
7887                 break;
7888         case I40E_SWITCH_ELEMENT_TYPE_VSI:
7889                 if (num_reported != 1)
7890                         break;
7891                 /* This is immediately after a reset so we can assume this is
7892                  * the PF's VSI
7893                  */
7894                 pf->mac_seid = uplink_seid;
7895                 pf->pf_seid = downlink_seid;
7896                 pf->main_vsi_seid = seid;
7897                 if (printconfig)
7898                         dev_info(&pf->pdev->dev,
7899                                  "pf_seid=%d main_vsi_seid=%d\n",
7900                                  pf->pf_seid, pf->main_vsi_seid);
7901                 break;
7902         case I40E_SWITCH_ELEMENT_TYPE_PF:
7903         case I40E_SWITCH_ELEMENT_TYPE_VF:
7904         case I40E_SWITCH_ELEMENT_TYPE_EMP:
7905         case I40E_SWITCH_ELEMENT_TYPE_BMC:
7906         case I40E_SWITCH_ELEMENT_TYPE_PE:
7907         case I40E_SWITCH_ELEMENT_TYPE_PA:
7908                 /* ignore these for now */
7909                 break;
7910         default:
7911                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
7912                          element_type, seid);
7913                 break;
7914         }
7915 }
7916
7917 /**
7918  * i40e_fetch_switch_configuration - Get switch config from firmware
7919  * @pf: board private structure
7920  * @printconfig: should we print the contents
7921  *
7922  * Get the current switch configuration from the device and
7923  * extract a few useful SEID values.
7924  **/
7925 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
7926 {
7927         struct i40e_aqc_get_switch_config_resp *sw_config;
7928         u16 next_seid = 0;
7929         int ret = 0;
7930         u8 *aq_buf;
7931         int i;
7932
7933         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
7934         if (!aq_buf)
7935                 return -ENOMEM;
7936
7937         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
7938         do {
7939                 u16 num_reported, num_total;
7940
7941                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
7942                                                 I40E_AQ_LARGE_BUF,
7943                                                 &next_seid, NULL);
7944                 if (ret) {
7945                         dev_info(&pf->pdev->dev,
7946                                  "get switch config failed %d aq_err=%x\n",
7947                                  ret, pf->hw.aq.asq_last_status);
7948                         kfree(aq_buf);
7949                         return -ENOENT;
7950                 }
7951
7952                 num_reported = le16_to_cpu(sw_config->header.num_reported);
7953                 num_total = le16_to_cpu(sw_config->header.num_total);
7954
7955                 if (printconfig)
7956                         dev_info(&pf->pdev->dev,
7957                                  "header: %d reported %d total\n",
7958                                  num_reported, num_total);
7959
7960                 if (num_reported) {
7961                         int sz = sizeof(*sw_config) * num_reported;
7962
7963                         kfree(pf->sw_config);
7964                         pf->sw_config = kzalloc(sz, GFP_KERNEL);
7965                         if (pf->sw_config)
7966                                 memcpy(pf->sw_config, sw_config, sz);
7967                 }
7968
7969                 for (i = 0; i < num_reported; i++) {
7970                         struct i40e_aqc_switch_config_element_resp *ele =
7971                                 &sw_config->element[i];
7972
7973                         i40e_setup_pf_switch_element(pf, ele, num_reported,
7974                                                      printconfig);
7975                 }
7976         } while (next_seid != 0);
7977
7978         kfree(aq_buf);
7979         return ret;
7980 }
7981
7982 /**
7983  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
7984  * @pf: board private structure
7985  * @reinit: if the Main VSI needs to re-initialized.
7986  *
7987  * Returns 0 on success, negative value on failure
7988  **/
7989 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
7990 {
7991         u32 rxfc = 0, txfc = 0, rxfc_reg;
7992         int ret;
7993
7994         /* find out what's out there already */
7995         ret = i40e_fetch_switch_configuration(pf, false);
7996         if (ret) {
7997                 dev_info(&pf->pdev->dev,
7998                          "couldn't fetch switch config, err %d, aq_err %d\n",
7999                          ret, pf->hw.aq.asq_last_status);
8000                 return ret;
8001         }
8002         i40e_pf_reset_stats(pf);
8003
8004         /* first time setup */
8005         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
8006                 struct i40e_vsi *vsi = NULL;
8007                 u16 uplink_seid;
8008
8009                 /* Set up the PF VSI associated with the PF's main VSI
8010                  * that is already in the HW switch
8011                  */
8012                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
8013                         uplink_seid = pf->veb[pf->lan_veb]->seid;
8014                 else
8015                         uplink_seid = pf->mac_seid;
8016                 if (pf->lan_vsi == I40E_NO_VSI)
8017                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
8018                 else if (reinit)
8019                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
8020                 if (!vsi) {
8021                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
8022                         i40e_fdir_teardown(pf);
8023                         return -EAGAIN;
8024                 }
8025         } else {
8026                 /* force a reset of TC and queue layout configurations */
8027                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8028                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8029                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8030                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8031         }
8032         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
8033
8034         i40e_fdir_sb_setup(pf);
8035
8036         /* Setup static PF queue filter control settings */
8037         ret = i40e_setup_pf_filter_control(pf);
8038         if (ret) {
8039                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
8040                          ret);
8041                 /* Failure here should not stop continuing other steps */
8042         }
8043
8044         /* enable RSS in the HW, even for only one queue, as the stack can use
8045          * the hash
8046          */
8047         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
8048                 i40e_config_rss(pf);
8049
8050         /* fill in link information and enable LSE reporting */
8051         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
8052         i40e_link_event(pf);
8053
8054         /* Initialize user-specific link properties */
8055         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8056                                   I40E_AQ_AN_COMPLETED) ? true : false);
8057         /* requested_mode is set in probe or by ethtool */
8058         if (!pf->fc_autoneg_status)
8059                 goto no_autoneg;
8060
8061         if ((pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX) &&
8062             (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX))
8063                 pf->hw.fc.current_mode = I40E_FC_FULL;
8064         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX)
8065                 pf->hw.fc.current_mode = I40E_FC_TX_PAUSE;
8066         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX)
8067                 pf->hw.fc.current_mode = I40E_FC_RX_PAUSE;
8068         else
8069                 pf->hw.fc.current_mode = I40E_FC_NONE;
8070
8071         /* sync the flow control settings with the auto-neg values */
8072         switch (pf->hw.fc.current_mode) {
8073         case I40E_FC_FULL:
8074                 txfc = 1;
8075                 rxfc = 1;
8076                 break;
8077         case I40E_FC_TX_PAUSE:
8078                 txfc = 1;
8079                 rxfc = 0;
8080                 break;
8081         case I40E_FC_RX_PAUSE:
8082                 txfc = 0;
8083                 rxfc = 1;
8084                 break;
8085         case I40E_FC_NONE:
8086         case I40E_FC_DEFAULT:
8087                 txfc = 0;
8088                 rxfc = 0;
8089                 break;
8090         case I40E_FC_PFC:
8091                 /* TBD */
8092                 break;
8093         /* no default case, we have to handle all possibilities here */
8094         }
8095
8096         wr32(&pf->hw, I40E_PRTDCB_FCCFG, txfc << I40E_PRTDCB_FCCFG_TFCE_SHIFT);
8097
8098         rxfc_reg = rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
8099                    ~I40E_PRTDCB_MFLCN_RFCE_MASK;
8100         rxfc_reg |= (rxfc << I40E_PRTDCB_MFLCN_RFCE_SHIFT);
8101
8102         wr32(&pf->hw, I40E_PRTDCB_MFLCN, rxfc_reg);
8103
8104         goto fc_complete;
8105
8106 no_autoneg:
8107         /* disable L2 flow control, user can turn it on if they wish */
8108         wr32(&pf->hw, I40E_PRTDCB_FCCFG, 0);
8109         wr32(&pf->hw, I40E_PRTDCB_MFLCN, rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
8110                                          ~I40E_PRTDCB_MFLCN_RFCE_MASK);
8111
8112 fc_complete:
8113         i40e_ptp_init(pf);
8114
8115         return ret;
8116 }
8117
8118 /**
8119  * i40e_determine_queue_usage - Work out queue distribution
8120  * @pf: board private structure
8121  **/
8122 static void i40e_determine_queue_usage(struct i40e_pf *pf)
8123 {
8124         int queues_left;
8125
8126         pf->num_lan_qps = 0;
8127
8128         /* Find the max queues to be put into basic use.  We'll always be
8129          * using TC0, whether or not DCB is running, and TC0 will get the
8130          * big RSS set.
8131          */
8132         queues_left = pf->hw.func_caps.num_tx_qp;
8133
8134         if ((queues_left == 1) ||
8135             !(pf->flags & I40E_FLAG_MSIX_ENABLED) ||
8136             !(pf->flags & (I40E_FLAG_RSS_ENABLED | I40E_FLAG_FD_SB_ENABLED |
8137                            I40E_FLAG_DCB_ENABLED))) {
8138                 /* one qp for PF, no queues for anything else */
8139                 queues_left = 0;
8140                 pf->rss_size = pf->num_lan_qps = 1;
8141
8142                 /* make sure all the fancies are disabled */
8143                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8144                                I40E_FLAG_FD_SB_ENABLED  |
8145                                I40E_FLAG_FD_ATR_ENABLED |
8146                                I40E_FLAG_DCB_ENABLED    |
8147                                I40E_FLAG_SRIOV_ENABLED  |
8148                                I40E_FLAG_VMDQ_ENABLED);
8149         } else {
8150                 /* Not enough queues for all TCs */
8151                 if ((pf->flags & I40E_FLAG_DCB_ENABLED) &&
8152                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
8153                         pf->flags &= ~I40E_FLAG_DCB_ENABLED;
8154                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
8155                 }
8156                 pf->num_lan_qps = pf->rss_size_max;
8157                 queues_left -= pf->num_lan_qps;
8158         }
8159
8160         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8161                 if (queues_left > 1) {
8162                         queues_left -= 1; /* save 1 queue for FD */
8163                 } else {
8164                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8165                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
8166                 }
8167         }
8168
8169         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8170             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
8171                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
8172                                         (queues_left / pf->num_vf_qps));
8173                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
8174         }
8175
8176         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
8177             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
8178                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
8179                                           (queues_left / pf->num_vmdq_qps));
8180                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
8181         }
8182
8183         pf->queues_left = queues_left;
8184 }
8185
8186 /**
8187  * i40e_setup_pf_filter_control - Setup PF static filter control
8188  * @pf: PF to be setup
8189  *
8190  * i40e_setup_pf_filter_control sets up a pf's initial filter control
8191  * settings. If PE/FCoE are enabled then it will also set the per PF
8192  * based filter sizes required for them. It also enables Flow director,
8193  * ethertype and macvlan type filter settings for the pf.
8194  *
8195  * Returns 0 on success, negative on failure
8196  **/
8197 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
8198 {
8199         struct i40e_filter_control_settings *settings = &pf->filter_settings;
8200
8201         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
8202
8203         /* Flow Director is enabled */
8204         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
8205                 settings->enable_fdir = true;
8206
8207         /* Ethtype and MACVLAN filters enabled for PF */
8208         settings->enable_ethtype = true;
8209         settings->enable_macvlan = true;
8210
8211         if (i40e_set_filter_control(&pf->hw, settings))
8212                 return -ENOENT;
8213
8214         return 0;
8215 }
8216
8217 #define INFO_STRING_LEN 255
8218 static void i40e_print_features(struct i40e_pf *pf)
8219 {
8220         struct i40e_hw *hw = &pf->hw;
8221         char *buf, *string;
8222
8223         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
8224         if (!string) {
8225                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
8226                 return;
8227         }
8228
8229         buf = string;
8230
8231         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
8232 #ifdef CONFIG_PCI_IOV
8233         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
8234 #endif
8235         buf += sprintf(buf, "VSIs: %d QP: %d ", pf->hw.func_caps.num_vsis,
8236                        pf->vsi[pf->lan_vsi]->num_queue_pairs);
8237
8238         if (pf->flags & I40E_FLAG_RSS_ENABLED)
8239                 buf += sprintf(buf, "RSS ");
8240         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
8241                 buf += sprintf(buf, "FD_ATR ");
8242         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8243                 buf += sprintf(buf, "FD_SB ");
8244                 buf += sprintf(buf, "NTUPLE ");
8245         }
8246         if (pf->flags & I40E_FLAG_DCB_ENABLED)
8247                 buf += sprintf(buf, "DCB ");
8248         if (pf->flags & I40E_FLAG_PTP)
8249                 buf += sprintf(buf, "PTP ");
8250
8251         BUG_ON(buf > (string + INFO_STRING_LEN));
8252         dev_info(&pf->pdev->dev, "%s\n", string);
8253         kfree(string);
8254 }
8255
8256 /**
8257  * i40e_probe - Device initialization routine
8258  * @pdev: PCI device information struct
8259  * @ent: entry in i40e_pci_tbl
8260  *
8261  * i40e_probe initializes a pf identified by a pci_dev structure.
8262  * The OS initialization, configuring of the pf private structure,
8263  * and a hardware reset occur.
8264  *
8265  * Returns 0 on success, negative on failure
8266  **/
8267 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8268 {
8269         struct i40e_pf *pf;
8270         struct i40e_hw *hw;
8271         static u16 pfs_found;
8272         u16 link_status;
8273         int err = 0;
8274         u32 len;
8275         u32 i;
8276
8277         err = pci_enable_device_mem(pdev);
8278         if (err)
8279                 return err;
8280
8281         /* set up for high or low dma */
8282         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
8283         if (err) {
8284                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
8285                 if (err) {
8286                         dev_err(&pdev->dev,
8287                                 "DMA configuration failed: 0x%x\n", err);
8288                         goto err_dma;
8289                 }
8290         }
8291
8292         /* set up pci connections */
8293         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
8294                                            IORESOURCE_MEM), i40e_driver_name);
8295         if (err) {
8296                 dev_info(&pdev->dev,
8297                          "pci_request_selected_regions failed %d\n", err);
8298                 goto err_pci_reg;
8299         }
8300
8301         pci_enable_pcie_error_reporting(pdev);
8302         pci_set_master(pdev);
8303
8304         /* Now that we have a PCI connection, we need to do the
8305          * low level device setup.  This is primarily setting up
8306          * the Admin Queue structures and then querying for the
8307          * device's current profile information.
8308          */
8309         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
8310         if (!pf) {
8311                 err = -ENOMEM;
8312                 goto err_pf_alloc;
8313         }
8314         pf->next_vsi = 0;
8315         pf->pdev = pdev;
8316         set_bit(__I40E_DOWN, &pf->state);
8317
8318         hw = &pf->hw;
8319         hw->back = pf;
8320         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
8321                               pci_resource_len(pdev, 0));
8322         if (!hw->hw_addr) {
8323                 err = -EIO;
8324                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
8325                          (unsigned int)pci_resource_start(pdev, 0),
8326                          (unsigned int)pci_resource_len(pdev, 0), err);
8327                 goto err_ioremap;
8328         }
8329         hw->vendor_id = pdev->vendor;
8330         hw->device_id = pdev->device;
8331         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
8332         hw->subsystem_vendor_id = pdev->subsystem_vendor;
8333         hw->subsystem_device_id = pdev->subsystem_device;
8334         hw->bus.device = PCI_SLOT(pdev->devfn);
8335         hw->bus.func = PCI_FUNC(pdev->devfn);
8336         pf->instance = pfs_found;
8337
8338         /* do a special CORER for clearing PXE mode once at init */
8339         if (hw->revision_id == 0 &&
8340             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
8341                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
8342                 i40e_flush(hw);
8343                 msleep(200);
8344                 pf->corer_count++;
8345
8346                 i40e_clear_pxe_mode(hw);
8347         }
8348
8349         /* Reset here to make sure all is clean and to define PF 'n' */
8350         err = i40e_pf_reset(hw);
8351         if (err) {
8352                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
8353                 goto err_pf_reset;
8354         }
8355         pf->pfr_count++;
8356
8357         hw->aq.num_arq_entries = I40E_AQ_LEN;
8358         hw->aq.num_asq_entries = I40E_AQ_LEN;
8359         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
8360         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
8361         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
8362         snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
8363                  "%s-pf%d:misc",
8364                  dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
8365
8366         err = i40e_init_shared_code(hw);
8367         if (err) {
8368                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
8369                 goto err_pf_reset;
8370         }
8371
8372         /* set up a default setting for link flow control */
8373         pf->hw.fc.requested_mode = I40E_FC_NONE;
8374
8375         err = i40e_init_adminq(hw);
8376         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
8377         if (err) {
8378                 dev_info(&pdev->dev,
8379                          "init_adminq failed: %d expecting API %02x.%02x\n",
8380                          err,
8381                          I40E_FW_API_VERSION_MAJOR, I40E_FW_API_VERSION_MINOR);
8382                 goto err_pf_reset;
8383         }
8384
8385         i40e_verify_eeprom(pf);
8386
8387         /* Rev 0 hardware was never productized */
8388         if (hw->revision_id < 1)
8389                 dev_warn(&pdev->dev, "This device is a pre-production adapter/LOM. Please be aware there may be issues with your hardware. If you are experiencing problems please contact your Intel or hardware representative who provided you with this hardware.\n");
8390
8391         i40e_clear_pxe_mode(hw);
8392         err = i40e_get_capabilities(pf);
8393         if (err)
8394                 goto err_adminq_setup;
8395
8396         err = i40e_sw_init(pf);
8397         if (err) {
8398                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
8399                 goto err_sw_init;
8400         }
8401
8402         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
8403                                 hw->func_caps.num_rx_qp,
8404                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
8405         if (err) {
8406                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
8407                 goto err_init_lan_hmc;
8408         }
8409
8410         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
8411         if (err) {
8412                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
8413                 err = -ENOENT;
8414                 goto err_configure_lan_hmc;
8415         }
8416
8417         i40e_get_mac_addr(hw, hw->mac.addr);
8418         if (!is_valid_ether_addr(hw->mac.addr)) {
8419                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
8420                 err = -EIO;
8421                 goto err_mac_addr;
8422         }
8423         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
8424         memcpy(hw->mac.perm_addr, hw->mac.addr, ETH_ALEN);
8425
8426         pci_set_drvdata(pdev, pf);
8427         pci_save_state(pdev);
8428 #ifdef CONFIG_I40E_DCB
8429         err = i40e_init_pf_dcb(pf);
8430         if (err) {
8431                 dev_info(&pdev->dev, "init_pf_dcb failed: %d\n", err);
8432                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
8433                 /* Continue without DCB enabled */
8434         }
8435 #endif /* CONFIG_I40E_DCB */
8436
8437         /* set up periodic task facility */
8438         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
8439         pf->service_timer_period = HZ;
8440
8441         INIT_WORK(&pf->service_task, i40e_service_task);
8442         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
8443         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
8444         pf->link_check_timeout = jiffies;
8445
8446         /* WoL defaults to disabled */
8447         pf->wol_en = false;
8448         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
8449
8450         /* set up the main switch operations */
8451         i40e_determine_queue_usage(pf);
8452         i40e_init_interrupt_scheme(pf);
8453
8454         /* Set up the *vsi struct based on the number of VSIs in the HW,
8455          * and set up our local tracking of the MAIN PF vsi.
8456          */
8457         len = sizeof(struct i40e_vsi *) * pf->hw.func_caps.num_vsis;
8458         pf->vsi = kzalloc(len, GFP_KERNEL);
8459         if (!pf->vsi) {
8460                 err = -ENOMEM;
8461                 goto err_switch_setup;
8462         }
8463
8464         err = i40e_setup_pf_switch(pf, false);
8465         if (err) {
8466                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
8467                 goto err_vsis;
8468         }
8469         /* if FDIR VSI was set up, start it now */
8470         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
8471                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
8472                         i40e_vsi_open(pf->vsi[i]);
8473                         break;
8474                 }
8475         }
8476
8477         /* The main driver is (mostly) up and happy. We need to set this state
8478          * before setting up the misc vector or we get a race and the vector
8479          * ends up disabled forever.
8480          */
8481         clear_bit(__I40E_DOWN, &pf->state);
8482
8483         /* In case of MSIX we are going to setup the misc vector right here
8484          * to handle admin queue events etc. In case of legacy and MSI
8485          * the misc functionality and queue processing is combined in
8486          * the same vector and that gets setup at open.
8487          */
8488         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8489                 err = i40e_setup_misc_vector(pf);
8490                 if (err) {
8491                         dev_info(&pdev->dev,
8492                                  "setup of misc vector failed: %d\n", err);
8493                         goto err_vsis;
8494                 }
8495         }
8496
8497 #ifdef CONFIG_PCI_IOV
8498         /* prep for VF support */
8499         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8500             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
8501             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
8502                 u32 val;
8503
8504                 /* disable link interrupts for VFs */
8505                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
8506                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
8507                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
8508                 i40e_flush(hw);
8509
8510                 if (pci_num_vf(pdev)) {
8511                         dev_info(&pdev->dev,
8512                                  "Active VFs found, allocating resources.\n");
8513                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
8514                         if (err)
8515                                 dev_info(&pdev->dev,
8516                                          "Error %d allocating resources for existing VFs\n",
8517                                          err);
8518                 }
8519         }
8520 #endif /* CONFIG_PCI_IOV */
8521
8522         pfs_found++;
8523
8524         i40e_dbg_pf_init(pf);
8525
8526         /* tell the firmware that we're starting */
8527         i40e_send_version(pf);
8528
8529         /* since everything's happy, start the service_task timer */
8530         mod_timer(&pf->service_timer,
8531                   round_jiffies(jiffies + pf->service_timer_period));
8532
8533         /* Get the negotiated link width and speed from PCI config space */
8534         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
8535
8536         i40e_set_pci_config_data(hw, link_status);
8537
8538         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
8539                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
8540                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
8541                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
8542                  "Unknown"),
8543                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
8544                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
8545                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
8546                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
8547                  "Unknown"));
8548
8549         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
8550             hw->bus.speed < i40e_bus_speed_8000) {
8551                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
8552                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
8553         }
8554
8555         /* print a string summarizing features */
8556         i40e_print_features(pf);
8557
8558         return 0;
8559
8560         /* Unwind what we've done if something failed in the setup */
8561 err_vsis:
8562         set_bit(__I40E_DOWN, &pf->state);
8563         i40e_clear_interrupt_scheme(pf);
8564         kfree(pf->vsi);
8565 err_switch_setup:
8566         i40e_reset_interrupt_capability(pf);
8567         del_timer_sync(&pf->service_timer);
8568 err_mac_addr:
8569 err_configure_lan_hmc:
8570         (void)i40e_shutdown_lan_hmc(hw);
8571 err_init_lan_hmc:
8572         kfree(pf->qp_pile);
8573         kfree(pf->irq_pile);
8574 err_sw_init:
8575 err_adminq_setup:
8576         (void)i40e_shutdown_adminq(hw);
8577 err_pf_reset:
8578         iounmap(hw->hw_addr);
8579 err_ioremap:
8580         kfree(pf);
8581 err_pf_alloc:
8582         pci_disable_pcie_error_reporting(pdev);
8583         pci_release_selected_regions(pdev,
8584                                      pci_select_bars(pdev, IORESOURCE_MEM));
8585 err_pci_reg:
8586 err_dma:
8587         pci_disable_device(pdev);
8588         return err;
8589 }
8590
8591 /**
8592  * i40e_remove - Device removal routine
8593  * @pdev: PCI device information struct
8594  *
8595  * i40e_remove is called by the PCI subsystem to alert the driver
8596  * that is should release a PCI device.  This could be caused by a
8597  * Hot-Plug event, or because the driver is going to be removed from
8598  * memory.
8599  **/
8600 static void i40e_remove(struct pci_dev *pdev)
8601 {
8602         struct i40e_pf *pf = pci_get_drvdata(pdev);
8603         i40e_status ret_code;
8604         u32 reg;
8605         int i;
8606
8607         i40e_dbg_pf_exit(pf);
8608
8609         i40e_ptp_stop(pf);
8610
8611         /* no more scheduling of any task */
8612         set_bit(__I40E_DOWN, &pf->state);
8613         del_timer_sync(&pf->service_timer);
8614         cancel_work_sync(&pf->service_task);
8615
8616         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
8617                 i40e_free_vfs(pf);
8618                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
8619         }
8620
8621         i40e_fdir_teardown(pf);
8622
8623         /* If there is a switch structure or any orphans, remove them.
8624          * This will leave only the PF's VSI remaining.
8625          */
8626         for (i = 0; i < I40E_MAX_VEB; i++) {
8627                 if (!pf->veb[i])
8628                         continue;
8629
8630                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
8631                     pf->veb[i]->uplink_seid == 0)
8632                         i40e_switch_branch_release(pf->veb[i]);
8633         }
8634
8635         /* Now we can shutdown the PF's VSI, just before we kill
8636          * adminq and hmc.
8637          */
8638         if (pf->vsi[pf->lan_vsi])
8639                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
8640
8641         i40e_stop_misc_vector(pf);
8642         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8643                 synchronize_irq(pf->msix_entries[0].vector);
8644                 free_irq(pf->msix_entries[0].vector, pf);
8645         }
8646
8647         /* shutdown and destroy the HMC */
8648         if (pf->hw.hmc.hmc_obj) {
8649                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
8650                 if (ret_code)
8651                         dev_warn(&pdev->dev,
8652                                  "Failed to destroy the HMC resources: %d\n",
8653                                  ret_code);
8654         }
8655
8656         /* shutdown the adminq */
8657         ret_code = i40e_shutdown_adminq(&pf->hw);
8658         if (ret_code)
8659                 dev_warn(&pdev->dev,
8660                          "Failed to destroy the Admin Queue resources: %d\n",
8661                          ret_code);
8662
8663         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
8664         i40e_clear_interrupt_scheme(pf);
8665         for (i = 0; i < pf->hw.func_caps.num_vsis; i++) {
8666                 if (pf->vsi[i]) {
8667                         i40e_vsi_clear_rings(pf->vsi[i]);
8668                         i40e_vsi_clear(pf->vsi[i]);
8669                         pf->vsi[i] = NULL;
8670                 }
8671         }
8672
8673         for (i = 0; i < I40E_MAX_VEB; i++) {
8674                 kfree(pf->veb[i]);
8675                 pf->veb[i] = NULL;
8676         }
8677
8678         kfree(pf->qp_pile);
8679         kfree(pf->irq_pile);
8680         kfree(pf->sw_config);
8681         kfree(pf->vsi);
8682
8683         /* force a PF reset to clean anything leftover */
8684         reg = rd32(&pf->hw, I40E_PFGEN_CTRL);
8685         wr32(&pf->hw, I40E_PFGEN_CTRL, (reg | I40E_PFGEN_CTRL_PFSWR_MASK));
8686         i40e_flush(&pf->hw);
8687
8688         iounmap(pf->hw.hw_addr);
8689         kfree(pf);
8690         pci_release_selected_regions(pdev,
8691                                      pci_select_bars(pdev, IORESOURCE_MEM));
8692
8693         pci_disable_pcie_error_reporting(pdev);
8694         pci_disable_device(pdev);
8695 }
8696
8697 /**
8698  * i40e_pci_error_detected - warning that something funky happened in PCI land
8699  * @pdev: PCI device information struct
8700  *
8701  * Called to warn that something happened and the error handling steps
8702  * are in progress.  Allows the driver to quiesce things, be ready for
8703  * remediation.
8704  **/
8705 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
8706                                                 enum pci_channel_state error)
8707 {
8708         struct i40e_pf *pf = pci_get_drvdata(pdev);
8709
8710         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
8711
8712         /* shutdown all operations */
8713         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
8714                 rtnl_lock();
8715                 i40e_prep_for_reset(pf);
8716                 rtnl_unlock();
8717         }
8718
8719         /* Request a slot reset */
8720         return PCI_ERS_RESULT_NEED_RESET;
8721 }
8722
8723 /**
8724  * i40e_pci_error_slot_reset - a PCI slot reset just happened
8725  * @pdev: PCI device information struct
8726  *
8727  * Called to find if the driver can work with the device now that
8728  * the pci slot has been reset.  If a basic connection seems good
8729  * (registers are readable and have sane content) then return a
8730  * happy little PCI_ERS_RESULT_xxx.
8731  **/
8732 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
8733 {
8734         struct i40e_pf *pf = pci_get_drvdata(pdev);
8735         pci_ers_result_t result;
8736         int err;
8737         u32 reg;
8738
8739         dev_info(&pdev->dev, "%s\n", __func__);
8740         if (pci_enable_device_mem(pdev)) {
8741                 dev_info(&pdev->dev,
8742                          "Cannot re-enable PCI device after reset.\n");
8743                 result = PCI_ERS_RESULT_DISCONNECT;
8744         } else {
8745                 pci_set_master(pdev);
8746                 pci_restore_state(pdev);
8747                 pci_save_state(pdev);
8748                 pci_wake_from_d3(pdev, false);
8749
8750                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
8751                 if (reg == 0)
8752                         result = PCI_ERS_RESULT_RECOVERED;
8753                 else
8754                         result = PCI_ERS_RESULT_DISCONNECT;
8755         }
8756
8757         err = pci_cleanup_aer_uncorrect_error_status(pdev);
8758         if (err) {
8759                 dev_info(&pdev->dev,
8760                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
8761                          err);
8762                 /* non-fatal, continue */
8763         }
8764
8765         return result;
8766 }
8767
8768 /**
8769  * i40e_pci_error_resume - restart operations after PCI error recovery
8770  * @pdev: PCI device information struct
8771  *
8772  * Called to allow the driver to bring things back up after PCI error
8773  * and/or reset recovery has finished.
8774  **/
8775 static void i40e_pci_error_resume(struct pci_dev *pdev)
8776 {
8777         struct i40e_pf *pf = pci_get_drvdata(pdev);
8778
8779         dev_info(&pdev->dev, "%s\n", __func__);
8780         if (test_bit(__I40E_SUSPENDED, &pf->state))
8781                 return;
8782
8783         rtnl_lock();
8784         i40e_handle_reset_warning(pf);
8785         rtnl_lock();
8786 }
8787
8788 /**
8789  * i40e_shutdown - PCI callback for shutting down
8790  * @pdev: PCI device information struct
8791  **/
8792 static void i40e_shutdown(struct pci_dev *pdev)
8793 {
8794         struct i40e_pf *pf = pci_get_drvdata(pdev);
8795         struct i40e_hw *hw = &pf->hw;
8796
8797         set_bit(__I40E_SUSPENDED, &pf->state);
8798         set_bit(__I40E_DOWN, &pf->state);
8799         rtnl_lock();
8800         i40e_prep_for_reset(pf);
8801         rtnl_unlock();
8802
8803         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
8804         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
8805
8806         if (system_state == SYSTEM_POWER_OFF) {
8807                 pci_wake_from_d3(pdev, pf->wol_en);
8808                 pci_set_power_state(pdev, PCI_D3hot);
8809         }
8810 }
8811
8812 #ifdef CONFIG_PM
8813 /**
8814  * i40e_suspend - PCI callback for moving to D3
8815  * @pdev: PCI device information struct
8816  **/
8817 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
8818 {
8819         struct i40e_pf *pf = pci_get_drvdata(pdev);
8820         struct i40e_hw *hw = &pf->hw;
8821
8822         set_bit(__I40E_SUSPENDED, &pf->state);
8823         set_bit(__I40E_DOWN, &pf->state);
8824         rtnl_lock();
8825         i40e_prep_for_reset(pf);
8826         rtnl_unlock();
8827
8828         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
8829         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
8830
8831         pci_wake_from_d3(pdev, pf->wol_en);
8832         pci_set_power_state(pdev, PCI_D3hot);
8833
8834         return 0;
8835 }
8836
8837 /**
8838  * i40e_resume - PCI callback for waking up from D3
8839  * @pdev: PCI device information struct
8840  **/
8841 static int i40e_resume(struct pci_dev *pdev)
8842 {
8843         struct i40e_pf *pf = pci_get_drvdata(pdev);
8844         u32 err;
8845
8846         pci_set_power_state(pdev, PCI_D0);
8847         pci_restore_state(pdev);
8848         /* pci_restore_state() clears dev->state_saves, so
8849          * call pci_save_state() again to restore it.
8850          */
8851         pci_save_state(pdev);
8852
8853         err = pci_enable_device_mem(pdev);
8854         if (err) {
8855                 dev_err(&pdev->dev,
8856                         "%s: Cannot enable PCI device from suspend\n",
8857                         __func__);
8858                 return err;
8859         }
8860         pci_set_master(pdev);
8861
8862         /* no wakeup events while running */
8863         pci_wake_from_d3(pdev, false);
8864
8865         /* handling the reset will rebuild the device state */
8866         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
8867                 clear_bit(__I40E_DOWN, &pf->state);
8868                 rtnl_lock();
8869                 i40e_reset_and_rebuild(pf, false);
8870                 rtnl_unlock();
8871         }
8872
8873         return 0;
8874 }
8875
8876 #endif
8877 static const struct pci_error_handlers i40e_err_handler = {
8878         .error_detected = i40e_pci_error_detected,
8879         .slot_reset = i40e_pci_error_slot_reset,
8880         .resume = i40e_pci_error_resume,
8881 };
8882
8883 static struct pci_driver i40e_driver = {
8884         .name     = i40e_driver_name,
8885         .id_table = i40e_pci_tbl,
8886         .probe    = i40e_probe,
8887         .remove   = i40e_remove,
8888 #ifdef CONFIG_PM
8889         .suspend  = i40e_suspend,
8890         .resume   = i40e_resume,
8891 #endif
8892         .shutdown = i40e_shutdown,
8893         .err_handler = &i40e_err_handler,
8894         .sriov_configure = i40e_pci_sriov_configure,
8895 };
8896
8897 /**
8898  * i40e_init_module - Driver registration routine
8899  *
8900  * i40e_init_module is the first routine called when the driver is
8901  * loaded. All it does is register with the PCI subsystem.
8902  **/
8903 static int __init i40e_init_module(void)
8904 {
8905         pr_info("%s: %s - version %s\n", i40e_driver_name,
8906                 i40e_driver_string, i40e_driver_version_str);
8907         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
8908         i40e_dbg_init();
8909         return pci_register_driver(&i40e_driver);
8910 }
8911 module_init(i40e_init_module);
8912
8913 /**
8914  * i40e_exit_module - Driver exit cleanup routine
8915  *
8916  * i40e_exit_module is called just before the driver is removed
8917  * from memory.
8918  **/
8919 static void __exit i40e_exit_module(void)
8920 {
8921         pci_unregister_driver(&i40e_driver);
8922         i40e_dbg_exit();
8923 }
8924 module_exit(i40e_exit_module);