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 13
  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_QEMU), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  77         /* required last entry */
  78         {0, }
  79 };
  80 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  81
  82 #define I40E_MAX_VF_COUNT 128
  83 static int debug = -1;
  84 module_param(debug, int, 0);
  85 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  86
  87 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  88 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  89 MODULE_LICENSE("GPL");
  90 MODULE_VERSION(DRV_VERSION);
  91
  92 /**
  93  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  94  * @hw:   pointer to the HW structure
  95  * @mem:  ptr to mem struct to fill out
  96  * @size: size of memory requested
  97  * @alignment: what to align the allocation to
  98  **/
  99 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 100                             u64 size, u32 alignment)
 101 {
 102         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 103
 104         mem->size = ALIGN(size, alignment);
 105         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 106                                       &mem->pa, GFP_KERNEL);
 107         if (!mem->va)
 108                 return -ENOMEM;
 109
 110         return 0;
 111 }
 112
 113 /**
 114  * i40e_free_dma_mem_d - OS specific memory free for shared code
 115  * @hw:   pointer to the HW structure
 116  * @mem:  ptr to mem struct to free
 117  **/
 118 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 119 {
 120         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 121
 122         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 123         mem->va = NULL;
 124         mem->pa = 0;
 125         mem->size = 0;
 126
 127         return 0;
 128 }
 129
 130 /**
 131  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 132  * @hw:   pointer to the HW structure
 133  * @mem:  ptr to mem struct to fill out
 134  * @size: size of memory requested
 135  **/
 136 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 137                              u32 size)
 138 {
 139         mem->size = size;
 140         mem->va = kzalloc(size, GFP_KERNEL);
 141
 142         if (!mem->va)
 143                 return -ENOMEM;
 144
 145         return 0;
 146 }
 147
 148 /**
 149  * i40e_free_virt_mem_d - OS specific memory free for shared code
 150  * @hw:   pointer to the HW structure
 151  * @mem:  ptr to mem struct to free
 152  **/
 153 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 154 {
 155         /* it's ok to kfree a NULL pointer */
 156         kfree(mem->va);
 157         mem->va = NULL;
 158         mem->size = 0;
 159
 160         return 0;
 161 }
 162
 163 /**
 164  * i40e_get_lump - find a lump of free generic resource
 165  * @pf: board private structure
 166  * @pile: the pile of resource to search
 167  * @needed: the number of items needed
 168  * @id: an owner id to stick on the items assigned
 169  *
 170  * Returns the base item index of the lump, or negative for error
 171  *
 172  * The search_hint trick and lack of advanced fit-finding only work
 173  * because we're highly likely to have all the same size lump requests.
 174  * Linear search time and any fragmentation should be minimal.
 175  **/
 176 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 177                          u16 needed, u16 id)
 178 {
 179         int ret = -ENOMEM;
 180         int i, j;
 181
 182         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 183                 dev_info(&pf->pdev->dev,
 184                          "param err: pile=%p needed=%d id=0x%04x\n",
 185                          pile, needed, id);
 186                 return -EINVAL;
 187         }
 188
 189         /* start the linear search with an imperfect hint */
 190         i = pile->search_hint;
 191         while (i < pile->num_entries) {
 192                 /* skip already allocated entries */
 193                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 194                         i++;
 195                         continue;
 196                 }
 197
 198                 /* do we have enough in this lump? */
 199                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 200                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 201                                 break;
 202                 }
 203
 204                 if (j == needed) {
 205                         /* there was enough, so assign it to the requestor */
 206                         for (j = 0; j < needed; j++)
 207                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 208                         ret = i;
 209                         pile->search_hint = i + j;
 210                         break;
 211                 } else {
 212                         /* not enough, so skip over it and continue looking */
 213                         i += j;
 214                 }
 215         }
 216
 217         return ret;
 218 }
 219
 220 /**
 221  * i40e_put_lump - return a lump of generic resource
 222  * @pile: the pile of resource to search
 223  * @index: the base item index
 224  * @id: the owner id of the items assigned
 225  *
 226  * Returns the count of items in the lump
 227  **/
 228 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 229 {
 230         int valid_id = (id | I40E_PILE_VALID_BIT);
 231         int count = 0;
 232         int i;
 233
 234         if (!pile || index >= pile->num_entries)
 235                 return -EINVAL;
 236
 237         for (i = index;
 238              i < pile->num_entries && pile->list[i] == valid_id;
 239              i++) {
 240                 pile->list[i] = 0;
 241                 count++;
 242         }
 243
 244         if (count && index < pile->search_hint)
 245                 pile->search_hint = index;
 246
 247         return count;
 248 }
 249
 250 /**
 251  * i40e_service_event_schedule - Schedule the service task to wake up
 252  * @pf: board private structure
 253  *
 254  * If not already scheduled, this puts the task into the work queue
 255  **/
 256 static void i40e_service_event_schedule(struct i40e_pf *pf)
 257 {
 258         if (!test_bit(__I40E_DOWN, &pf->state) &&
 259             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 260             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 261                 schedule_work(&pf->service_task);
 262 }
 263
 264 /**
 265  * i40e_tx_timeout - Respond to a Tx Hang
 266  * @netdev: network interface device structure
 267  *
 268  * If any port has noticed a Tx timeout, it is likely that the whole
 269  * device is munged, not just the one netdev port, so go for the full
 270  * reset.
 271  **/
 272 static void i40e_tx_timeout(struct net_device *netdev)
 273 {
 274         struct i40e_netdev_priv *np = netdev_priv(netdev);
 275         struct i40e_vsi *vsi = np->vsi;
 276         struct i40e_pf *pf = vsi->back;
 277
 278         pf->tx_timeout_count++;
 279
 280         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 281                 pf->tx_timeout_recovery_level = 0;
 282         pf->tx_timeout_last_recovery = jiffies;
 283         netdev_info(netdev, "tx_timeout recovery level %d\n",
 284                     pf->tx_timeout_recovery_level);
 285
 286         switch (pf->tx_timeout_recovery_level) {
 287         case 0:
 288                 /* disable and re-enable queues for the VSI */
 289                 if (in_interrupt()) {
 290                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 291                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 292                 } else {
 293                         i40e_vsi_reinit_locked(vsi);
 294                 }
 295                 break;
 296         case 1:
 297                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 298                 break;
 299         case 2:
 300                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 301                 break;
 302         case 3:
 303                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 304                 break;
 305         default:
 306                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 307                 set_bit(__I40E_DOWN_REQUESTED, &pf->state);
 308                 set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
 309                 break;
 310         }
 311         i40e_service_event_schedule(pf);
 312         pf->tx_timeout_recovery_level++;
 313 }
 314
 315 /**
 316  * i40e_release_rx_desc - Store the new tail and head values
 317  * @rx_ring: ring to bump
 318  * @val: new head index
 319  **/
 320 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 321 {
 322         rx_ring->next_to_use = val;
 323
 324         /* Force memory writes to complete before letting h/w
 325          * know there are new descriptors to fetch.  (Only
 326          * applicable for weak-ordered memory model archs,
 327          * such as IA-64).
 328          */
 329         wmb();
 330         writel(val, rx_ring->tail);
 331 }
 332
 333 /**
 334  * i40e_get_vsi_stats_struct - Get System Network Statistics
 335  * @vsi: the VSI we care about
 336  *
 337  * Returns the address of the device statistics structure.
 338  * The statistics are actually updated from the service task.
 339  **/
 340 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 341 {
 342         return &vsi->net_stats;
 343 }
 344
 345 /**
 346  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 347  * @netdev: network interface device structure
 348  *
 349  * Returns the address of the device statistics structure.
 350  * The statistics are actually updated from the service task.
 351  **/
 352 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 353                                              struct net_device *netdev,
 354                                              struct rtnl_link_stats64 *stats)
 355 {
 356         struct i40e_netdev_priv *np = netdev_priv(netdev);
 357         struct i40e_ring *tx_ring, *rx_ring;
 358         struct i40e_vsi *vsi = np->vsi;
 359         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 360         int i;
 361
 362         if (test_bit(__I40E_DOWN, &vsi->state))
 363                 return stats;
 364
 365         if (!vsi->tx_rings)
 366                 return stats;
 367
 368         rcu_read_lock();
 369         for (i = 0; i < vsi->num_queue_pairs; i++) {
 370                 u64 bytes, packets;
 371                 unsigned int start;
 372
 373                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 374                 if (!tx_ring)
 375                         continue;
 376
 377                 do {
 378                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 379                         packets = tx_ring->stats.packets;
 380                         bytes   = tx_ring->stats.bytes;
 381                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 382
 383                 stats->tx_packets += packets;
 384                 stats->tx_bytes   += bytes;
 385                 rx_ring = &tx_ring[1];
 386
 387                 do {
 388                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 389                         packets = rx_ring->stats.packets;
 390                         bytes   = rx_ring->stats.bytes;
 391                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 392
 393                 stats->rx_packets += packets;
 394                 stats->rx_bytes   += bytes;
 395         }
 396         rcu_read_unlock();
 397
 398         /* following stats updated by i40e_watchdog_subtask() */
 399         stats->multicast        = vsi_stats->multicast;
 400         stats->tx_errors        = vsi_stats->tx_errors;
 401         stats->tx_dropped       = vsi_stats->tx_dropped;
 402         stats->rx_errors        = vsi_stats->rx_errors;
 403         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 404         stats->rx_length_errors = vsi_stats->rx_length_errors;
 405
 406         return stats;
 407 }
 408
 409 /**
 410  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 411  * @vsi: the VSI to have its stats reset
 412  **/
 413 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 414 {
 415         struct rtnl_link_stats64 *ns;
 416         int i;
 417
 418         if (!vsi)
 419                 return;
 420
 421         ns = i40e_get_vsi_stats_struct(vsi);
 422         memset(ns, 0, sizeof(*ns));
 423         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 424         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 425         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 426         if (vsi->rx_rings && vsi->rx_rings[0]) {
 427                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 428                         memset(&vsi->rx_rings[i]->stats, 0 ,
 429                                sizeof(vsi->rx_rings[i]->stats));
 430                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 431                                sizeof(vsi->rx_rings[i]->rx_stats));
 432                         memset(&vsi->tx_rings[i]->stats, 0 ,
 433                                sizeof(vsi->tx_rings[i]->stats));
 434                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 435                                sizeof(vsi->tx_rings[i]->tx_stats));
 436                 }
 437         }
 438         vsi->stat_offsets_loaded = false;
 439 }
 440
 441 /**
 442  * i40e_pf_reset_stats - Reset all of the stats for the given pf
 443  * @pf: the PF to be reset
 444  **/
 445 void i40e_pf_reset_stats(struct i40e_pf *pf)
 446 {
 447         int i;
 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         for (i = 0; i < I40E_MAX_VEB; i++) {
 454                 if (pf->veb[i]) {
 455                         memset(&pf->veb[i]->stats, 0,
 456                                sizeof(pf->veb[i]->stats));
 457                         memset(&pf->veb[i]->stats_offsets, 0,
 458                                sizeof(pf->veb[i]->stats_offsets));
 459                         pf->veb[i]->stat_offsets_loaded = false;
 460                 }
 461         }
 462 }
 463
 464 /**
 465  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 466  * @hw: ptr to the hardware info
 467  * @hireg: the high 32 bit reg to read
 468  * @loreg: the low 32 bit reg to read
 469  * @offset_loaded: has the initial offset been loaded yet
 470  * @offset: ptr to current offset value
 471  * @stat: ptr to the stat
 472  *
 473  * Since the device stats are not reset at PFReset, they likely will not
 474  * be zeroed when the driver starts.  We'll save the first values read
 475  * and use them as offsets to be subtracted from the raw values in order
 476  * to report stats that count from zero.  In the process, we also manage
 477  * the potential roll-over.
 478  **/
 479 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 480                                bool offset_loaded, u64 *offset, u64 *stat)
 481 {
 482         u64 new_data;
 483
 484         if (hw->device_id == I40E_DEV_ID_QEMU) {
 485                 new_data = rd32(hw, loreg);
 486                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 487         } else {
 488                 new_data = rd64(hw, loreg);
 489         }
 490         if (!offset_loaded)
 491                 *offset = new_data;
 492         if (likely(new_data >= *offset))
 493                 *stat = new_data - *offset;
 494         else
 495                 *stat = (new_data + ((u64)1 << 48)) - *offset;
 496         *stat &= 0xFFFFFFFFFFFFULL;
 497 }
 498
 499 /**
 500  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 501  * @hw: ptr to the hardware info
 502  * @reg: the hw reg to read
 503  * @offset_loaded: has the initial offset been loaded yet
 504  * @offset: ptr to current offset value
 505  * @stat: ptr to the stat
 506  **/
 507 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 508                                bool offset_loaded, u64 *offset, u64 *stat)
 509 {
 510         u32 new_data;
 511
 512         new_data = rd32(hw, reg);
 513         if (!offset_loaded)
 514                 *offset = new_data;
 515         if (likely(new_data >= *offset))
 516                 *stat = (u32)(new_data - *offset);
 517         else
 518                 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
 519 }
 520
 521 /**
 522  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 523  * @vsi: the VSI to be updated
 524  **/
 525 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 526 {
 527         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 528         struct i40e_pf *pf = vsi->back;
 529         struct i40e_hw *hw = &pf->hw;
 530         struct i40e_eth_stats *oes;
 531         struct i40e_eth_stats *es;     /* device's eth stats */
 532
 533         es = &vsi->eth_stats;
 534         oes = &vsi->eth_stats_offsets;
 535
 536         /* Gather up the stats that the hw collects */
 537         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 538                            vsi->stat_offsets_loaded,
 539                            &oes->tx_errors, &es->tx_errors);
 540         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 541                            vsi->stat_offsets_loaded,
 542                            &oes->rx_discards, &es->rx_discards);
 543         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 544                            vsi->stat_offsets_loaded,
 545                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 546         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 547                            vsi->stat_offsets_loaded,
 548                            &oes->tx_errors, &es->tx_errors);
 549
 550         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 551                            I40E_GLV_GORCL(stat_idx),
 552                            vsi->stat_offsets_loaded,
 553                            &oes->rx_bytes, &es->rx_bytes);
 554         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 555                            I40E_GLV_UPRCL(stat_idx),
 556                            vsi->stat_offsets_loaded,
 557                            &oes->rx_unicast, &es->rx_unicast);
 558         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 559                            I40E_GLV_MPRCL(stat_idx),
 560                            vsi->stat_offsets_loaded,
 561                            &oes->rx_multicast, &es->rx_multicast);
 562         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 563                            I40E_GLV_BPRCL(stat_idx),
 564                            vsi->stat_offsets_loaded,
 565                            &oes->rx_broadcast, &es->rx_broadcast);
 566
 567         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 568                            I40E_GLV_GOTCL(stat_idx),
 569                            vsi->stat_offsets_loaded,
 570                            &oes->tx_bytes, &es->tx_bytes);
 571         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 572                            I40E_GLV_UPTCL(stat_idx),
 573                            vsi->stat_offsets_loaded,
 574                            &oes->tx_unicast, &es->tx_unicast);
 575         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 576                            I40E_GLV_MPTCL(stat_idx),
 577                            vsi->stat_offsets_loaded,
 578                            &oes->tx_multicast, &es->tx_multicast);
 579         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 580                            I40E_GLV_BPTCL(stat_idx),
 581                            vsi->stat_offsets_loaded,
 582                            &oes->tx_broadcast, &es->tx_broadcast);
 583         vsi->stat_offsets_loaded = true;
 584 }
 585
 586 /**
 587  * i40e_update_veb_stats - Update Switch component statistics
 588  * @veb: the VEB being updated
 589  **/
 590 static void i40e_update_veb_stats(struct i40e_veb *veb)
 591 {
 592         struct i40e_pf *pf = veb->pf;
 593         struct i40e_hw *hw = &pf->hw;
 594         struct i40e_eth_stats *oes;
 595         struct i40e_eth_stats *es;     /* device's eth stats */
 596         int idx = 0;
 597
 598         idx = veb->stats_idx;
 599         es = &veb->stats;
 600         oes = &veb->stats_offsets;
 601
 602         /* Gather up the stats that the hw collects */
 603         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 604                            veb->stat_offsets_loaded,
 605                            &oes->tx_discards, &es->tx_discards);
 606         if (hw->revision_id > 0)
 607                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 608                                    veb->stat_offsets_loaded,
 609                                    &oes->rx_unknown_protocol,
 610                                    &es->rx_unknown_protocol);
 611         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 612                            veb->stat_offsets_loaded,
 613                            &oes->rx_bytes, &es->rx_bytes);
 614         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 615                            veb->stat_offsets_loaded,
 616                            &oes->rx_unicast, &es->rx_unicast);
 617         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 618                            veb->stat_offsets_loaded,
 619                            &oes->rx_multicast, &es->rx_multicast);
 620         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 621                            veb->stat_offsets_loaded,
 622                            &oes->rx_broadcast, &es->rx_broadcast);
 623
 624         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 625                            veb->stat_offsets_loaded,
 626                            &oes->tx_bytes, &es->tx_bytes);
 627         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 628                            veb->stat_offsets_loaded,
 629                            &oes->tx_unicast, &es->tx_unicast);
 630         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 631                            veb->stat_offsets_loaded,
 632                            &oes->tx_multicast, &es->tx_multicast);
 633         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 634                            veb->stat_offsets_loaded,
 635                            &oes->tx_broadcast, &es->tx_broadcast);
 636         veb->stat_offsets_loaded = true;
 637 }
 638
 639 /**
 640  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 641  * @pf: the corresponding PF
 642  *
 643  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 644  **/
 645 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 646 {
 647         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 648         struct i40e_hw_port_stats *nsd = &pf->stats;
 649         struct i40e_hw *hw = &pf->hw;
 650         u64 xoff = 0;
 651         u16 i, v;
 652
 653         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 654             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 655                 return;
 656
 657         xoff = nsd->link_xoff_rx;
 658         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 659                            pf->stat_offsets_loaded,
 660                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 661
 662         /* No new LFC xoff rx */
 663         if (!(nsd->link_xoff_rx - xoff))
 664                 return;
 665
 666         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 667         for (v = 0; v < pf->num_alloc_vsi; v++) {
 668                 struct i40e_vsi *vsi = pf->vsi[v];
 669
 670                 if (!vsi || !vsi->tx_rings[0])
 671                         continue;
 672
 673                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 674                         struct i40e_ring *ring = vsi->tx_rings[i];
 675                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 676                 }
 677         }
 678 }
 679
 680 /**
 681  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 682  * @pf: the corresponding PF
 683  *
 684  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 685  **/
 686 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 687 {
 688         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 689         struct i40e_hw_port_stats *nsd = &pf->stats;
 690         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 691         struct i40e_dcbx_config *dcb_cfg;
 692         struct i40e_hw *hw = &pf->hw;
 693         u16 i, v;
 694         u8 tc;
 695
 696         dcb_cfg = &hw->local_dcbx_config;
 697
 698         /* See if DCB enabled with PFC TC */
 699         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 700             !(dcb_cfg->pfc.pfcenable)) {
 701                 i40e_update_link_xoff_rx(pf);
 702                 return;
 703         }
 704
 705         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 706                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 707                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 708                                    pf->stat_offsets_loaded,
 709                                    &osd->priority_xoff_rx[i],
 710                                    &nsd->priority_xoff_rx[i]);
 711
 712                 /* No new PFC xoff rx */
 713                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 714                         continue;
 715                 /* Get the TC for given priority */
 716                 tc = dcb_cfg->etscfg.prioritytable[i];
 717                 xoff[tc] = true;
 718         }
 719
 720         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 721         for (v = 0; v < pf->num_alloc_vsi; v++) {
 722                 struct i40e_vsi *vsi = pf->vsi[v];
 723
 724                 if (!vsi || !vsi->tx_rings[0])
 725                         continue;
 726
 727                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 728                         struct i40e_ring *ring = vsi->tx_rings[i];
 729
 730                         tc = ring->dcb_tc;
 731                         if (xoff[tc])
 732                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 733                                           &ring->state);
 734                 }
 735         }
 736 }
 737
 738 /**
 739  * i40e_update_vsi_stats - Update the vsi statistics counters.
 740  * @vsi: the VSI to be updated
 741  *
 742  * There are a few instances where we store the same stat in a
 743  * couple of different structs.  This is partly because we have
 744  * the netdev stats that need to be filled out, which is slightly
 745  * different from the "eth_stats" defined by the chip and used in
 746  * VF communications.  We sort it out here.
 747  **/
 748 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 749 {
 750         struct i40e_pf *pf = vsi->back;
 751         struct rtnl_link_stats64 *ons;
 752         struct rtnl_link_stats64 *ns;   /* netdev stats */
 753         struct i40e_eth_stats *oes;
 754         struct i40e_eth_stats *es;     /* device's eth stats */
 755         u32 tx_restart, tx_busy;
 756         u32 rx_page, rx_buf;
 757         u64 rx_p, rx_b;
 758         u64 tx_p, tx_b;
 759         u16 q;
 760
 761         if (test_bit(__I40E_DOWN, &vsi->state) ||
 762             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 763                 return;
 764
 765         ns = i40e_get_vsi_stats_struct(vsi);
 766         ons = &vsi->net_stats_offsets;
 767         es = &vsi->eth_stats;
 768         oes = &vsi->eth_stats_offsets;
 769
 770         /* Gather up the netdev and vsi stats that the driver collects
 771          * on the fly during packet processing
 772          */
 773         rx_b = rx_p = 0;
 774         tx_b = tx_p = 0;
 775         tx_restart = tx_busy = 0;
 776         rx_page = 0;
 777         rx_buf = 0;
 778         rcu_read_lock();
 779         for (q = 0; q < vsi->num_queue_pairs; q++) {
 780                 struct i40e_ring *p;
 781                 u64 bytes, packets;
 782                 unsigned int start;
 783
 784                 /* locate Tx ring */
 785                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 786
 787                 do {
 788                         start = u64_stats_fetch_begin_irq(&p->syncp);
 789                         packets = p->stats.packets;
 790                         bytes = p->stats.bytes;
 791                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 792                 tx_b += bytes;
 793                 tx_p += packets;
 794                 tx_restart += p->tx_stats.restart_queue;
 795                 tx_busy += p->tx_stats.tx_busy;
 796
 797                 /* Rx queue is part of the same block as Tx queue */
 798                 p = &p[1];
 799                 do {
 800                         start = u64_stats_fetch_begin_irq(&p->syncp);
 801                         packets = p->stats.packets;
 802                         bytes = p->stats.bytes;
 803                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 804                 rx_b += bytes;
 805                 rx_p += packets;
 806                 rx_buf += p->rx_stats.alloc_buff_failed;
 807                 rx_page += p->rx_stats.alloc_page_failed;
 808         }
 809         rcu_read_unlock();
 810         vsi->tx_restart = tx_restart;
 811         vsi->tx_busy = tx_busy;
 812         vsi->rx_page_failed = rx_page;
 813         vsi->rx_buf_failed = rx_buf;
 814
 815         ns->rx_packets = rx_p;
 816         ns->rx_bytes = rx_b;
 817         ns->tx_packets = tx_p;
 818         ns->tx_bytes = tx_b;
 819
 820         /* update netdev stats from eth stats */
 821         i40e_update_eth_stats(vsi);
 822         ons->tx_errors = oes->tx_errors;
 823         ns->tx_errors = es->tx_errors;
 824         ons->multicast = oes->rx_multicast;
 825         ns->multicast = es->rx_multicast;
 826         ons->rx_dropped = oes->rx_discards;
 827         ns->rx_dropped = es->rx_discards;
 828         ons->tx_dropped = oes->tx_discards;
 829         ns->tx_dropped = es->tx_discards;
 830
 831         /* pull in a couple PF stats if this is the main vsi */
 832         if (vsi == pf->vsi[pf->lan_vsi]) {
 833                 ns->rx_crc_errors = pf->stats.crc_errors;
 834                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 835                 ns->rx_length_errors = pf->stats.rx_length_errors;
 836         }
 837 }
 838
 839 /**
 840  * i40e_update_pf_stats - Update the pf statistics counters.
 841  * @pf: the PF to be updated
 842  **/
 843 static void i40e_update_pf_stats(struct i40e_pf *pf)
 844 {
 845         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 846         struct i40e_hw_port_stats *nsd = &pf->stats;
 847         struct i40e_hw *hw = &pf->hw;
 848         u32 val;
 849         int i;
 850
 851         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 852                            I40E_GLPRT_GORCL(hw->port),
 853                            pf->stat_offsets_loaded,
 854                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 855         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 856                            I40E_GLPRT_GOTCL(hw->port),
 857                            pf->stat_offsets_loaded,
 858                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 859         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 860                            pf->stat_offsets_loaded,
 861                            &osd->eth.rx_discards,
 862                            &nsd->eth.rx_discards);
 863         i40e_stat_update32(hw, I40E_GLPRT_TDPC(hw->port),
 864                            pf->stat_offsets_loaded,
 865                            &osd->eth.tx_discards,
 866                            &nsd->eth.tx_discards);
 867
 868         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 869                            I40E_GLPRT_UPRCL(hw->port),
 870                            pf->stat_offsets_loaded,
 871                            &osd->eth.rx_unicast,
 872                            &nsd->eth.rx_unicast);
 873         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 874                            I40E_GLPRT_MPRCL(hw->port),
 875                            pf->stat_offsets_loaded,
 876                            &osd->eth.rx_multicast,
 877                            &nsd->eth.rx_multicast);
 878         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 879                            I40E_GLPRT_BPRCL(hw->port),
 880                            pf->stat_offsets_loaded,
 881                            &osd->eth.rx_broadcast,
 882                            &nsd->eth.rx_broadcast);
 883         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 884                            I40E_GLPRT_UPTCL(hw->port),
 885                            pf->stat_offsets_loaded,
 886                            &osd->eth.tx_unicast,
 887                            &nsd->eth.tx_unicast);
 888         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 889                            I40E_GLPRT_MPTCL(hw->port),
 890                            pf->stat_offsets_loaded,
 891                            &osd->eth.tx_multicast,
 892                            &nsd->eth.tx_multicast);
 893         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 894                            I40E_GLPRT_BPTCL(hw->port),
 895                            pf->stat_offsets_loaded,
 896                            &osd->eth.tx_broadcast,
 897                            &nsd->eth.tx_broadcast);
 898
 899         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 900                            pf->stat_offsets_loaded,
 901                            &osd->tx_dropped_link_down,
 902                            &nsd->tx_dropped_link_down);
 903
 904         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 905                            pf->stat_offsets_loaded,
 906                            &osd->crc_errors, &nsd->crc_errors);
 907
 908         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 909                            pf->stat_offsets_loaded,
 910                            &osd->illegal_bytes, &nsd->illegal_bytes);
 911
 912         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 913                            pf->stat_offsets_loaded,
 914                            &osd->mac_local_faults,
 915                            &nsd->mac_local_faults);
 916         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 917                            pf->stat_offsets_loaded,
 918                            &osd->mac_remote_faults,
 919                            &nsd->mac_remote_faults);
 920
 921         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 922                            pf->stat_offsets_loaded,
 923                            &osd->rx_length_errors,
 924                            &nsd->rx_length_errors);
 925
 926         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 927                            pf->stat_offsets_loaded,
 928                            &osd->link_xon_rx, &nsd->link_xon_rx);
 929         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 930                            pf->stat_offsets_loaded,
 931                            &osd->link_xon_tx, &nsd->link_xon_tx);
 932         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
 933         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 934                            pf->stat_offsets_loaded,
 935                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 936
 937         for (i = 0; i < 8; i++) {
 938                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 939                                    pf->stat_offsets_loaded,
 940                                    &osd->priority_xon_rx[i],
 941                                    &nsd->priority_xon_rx[i]);
 942                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 943                                    pf->stat_offsets_loaded,
 944                                    &osd->priority_xon_tx[i],
 945                                    &nsd->priority_xon_tx[i]);
 946                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
 947                                    pf->stat_offsets_loaded,
 948                                    &osd->priority_xoff_tx[i],
 949                                    &nsd->priority_xoff_tx[i]);
 950                 i40e_stat_update32(hw,
 951                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
 952                                    pf->stat_offsets_loaded,
 953                                    &osd->priority_xon_2_xoff[i],
 954                                    &nsd->priority_xon_2_xoff[i]);
 955         }
 956
 957         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
 958                            I40E_GLPRT_PRC64L(hw->port),
 959                            pf->stat_offsets_loaded,
 960                            &osd->rx_size_64, &nsd->rx_size_64);
 961         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
 962                            I40E_GLPRT_PRC127L(hw->port),
 963                            pf->stat_offsets_loaded,
 964                            &osd->rx_size_127, &nsd->rx_size_127);
 965         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
 966                            I40E_GLPRT_PRC255L(hw->port),
 967                            pf->stat_offsets_loaded,
 968                            &osd->rx_size_255, &nsd->rx_size_255);
 969         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
 970                            I40E_GLPRT_PRC511L(hw->port),
 971                            pf->stat_offsets_loaded,
 972                            &osd->rx_size_511, &nsd->rx_size_511);
 973         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
 974                            I40E_GLPRT_PRC1023L(hw->port),
 975                            pf->stat_offsets_loaded,
 976                            &osd->rx_size_1023, &nsd->rx_size_1023);
 977         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
 978                            I40E_GLPRT_PRC1522L(hw->port),
 979                            pf->stat_offsets_loaded,
 980                            &osd->rx_size_1522, &nsd->rx_size_1522);
 981         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
 982                            I40E_GLPRT_PRC9522L(hw->port),
 983                            pf->stat_offsets_loaded,
 984                            &osd->rx_size_big, &nsd->rx_size_big);
 985
 986         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
 987                            I40E_GLPRT_PTC64L(hw->port),
 988                            pf->stat_offsets_loaded,
 989                            &osd->tx_size_64, &nsd->tx_size_64);
 990         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
 991                            I40E_GLPRT_PTC127L(hw->port),
 992                            pf->stat_offsets_loaded,
 993                            &osd->tx_size_127, &nsd->tx_size_127);
 994         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
 995                            I40E_GLPRT_PTC255L(hw->port),
 996                            pf->stat_offsets_loaded,
 997                            &osd->tx_size_255, &nsd->tx_size_255);
 998         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
 999                            I40E_GLPRT_PTC511L(hw->port),
1000                            pf->stat_offsets_loaded,
1001                            &osd->tx_size_511, &nsd->tx_size_511);
1002         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1003                            I40E_GLPRT_PTC1023L(hw->port),
1004                            pf->stat_offsets_loaded,
1005                            &osd->tx_size_1023, &nsd->tx_size_1023);
1006         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1007                            I40E_GLPRT_PTC1522L(hw->port),
1008                            pf->stat_offsets_loaded,
1009                            &osd->tx_size_1522, &nsd->tx_size_1522);
1010         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1011                            I40E_GLPRT_PTC9522L(hw->port),
1012                            pf->stat_offsets_loaded,
1013                            &osd->tx_size_big, &nsd->tx_size_big);
1014
1015         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1016                            pf->stat_offsets_loaded,
1017                            &osd->rx_undersize, &nsd->rx_undersize);
1018         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1019                            pf->stat_offsets_loaded,
1020                            &osd->rx_fragments, &nsd->rx_fragments);
1021         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1022                            pf->stat_offsets_loaded,
1023                            &osd->rx_oversize, &nsd->rx_oversize);
1024         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->rx_jabber, &nsd->rx_jabber);
1027
1028         /* FDIR stats */
1029         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_atr_cnt_idx),
1030                            pf->stat_offsets_loaded,
1031                            &osd->fd_atr_match, &nsd->fd_atr_match);
1032         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_sb_cnt_idx),
1033                            pf->stat_offsets_loaded,
1034                            &osd->fd_sb_match, &nsd->fd_sb_match);
1035
1036         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1037         nsd->tx_lpi_status =
1038                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1039                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1040         nsd->rx_lpi_status =
1041                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1042                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1043         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1044                            pf->stat_offsets_loaded,
1045                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1046         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1047                            pf->stat_offsets_loaded,
1048                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1049
1050         pf->stat_offsets_loaded = true;
1051 }
1052
1053 /**
1054  * i40e_update_stats - Update the various statistics counters.
1055  * @vsi: the VSI to be updated
1056  *
1057  * Update the various stats for this VSI and its related entities.
1058  **/
1059 void i40e_update_stats(struct i40e_vsi *vsi)
1060 {
1061         struct i40e_pf *pf = vsi->back;
1062
1063         if (vsi == pf->vsi[pf->lan_vsi])
1064                 i40e_update_pf_stats(pf);
1065
1066         i40e_update_vsi_stats(vsi);
1067 }
1068
1069 /**
1070  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1071  * @vsi: the VSI to be searched
1072  * @macaddr: the MAC address
1073  * @vlan: the vlan
1074  * @is_vf: make sure its a vf filter, else doesn't matter
1075  * @is_netdev: make sure its a netdev filter, else doesn't matter
1076  *
1077  * Returns ptr to the filter object or NULL
1078  **/
1079 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1080                                                 u8 *macaddr, s16 vlan,
1081                                                 bool is_vf, bool is_netdev)
1082 {
1083         struct i40e_mac_filter *f;
1084
1085         if (!vsi || !macaddr)
1086                 return NULL;
1087
1088         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1089                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1090                     (vlan == f->vlan)    &&
1091                     (!is_vf || f->is_vf) &&
1092                     (!is_netdev || f->is_netdev))
1093                         return f;
1094         }
1095         return NULL;
1096 }
1097
1098 /**
1099  * i40e_find_mac - Find a mac addr in the macvlan filters list
1100  * @vsi: the VSI to be searched
1101  * @macaddr: the MAC address we are searching for
1102  * @is_vf: make sure its a vf filter, else doesn't matter
1103  * @is_netdev: make sure its a netdev filter, else doesn't matter
1104  *
1105  * Returns the first filter with the provided MAC address or NULL if
1106  * MAC address was not found
1107  **/
1108 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1109                                       bool is_vf, bool is_netdev)
1110 {
1111         struct i40e_mac_filter *f;
1112
1113         if (!vsi || !macaddr)
1114                 return NULL;
1115
1116         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1117                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1118                     (!is_vf || f->is_vf) &&
1119                     (!is_netdev || f->is_netdev))
1120                         return f;
1121         }
1122         return NULL;
1123 }
1124
1125 /**
1126  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1127  * @vsi: the VSI to be searched
1128  *
1129  * Returns true if VSI is in vlan mode or false otherwise
1130  **/
1131 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1132 {
1133         struct i40e_mac_filter *f;
1134
1135         /* Only -1 for all the filters denotes not in vlan mode
1136          * so we have to go through all the list in order to make sure
1137          */
1138         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1139                 if (f->vlan >= 0)
1140                         return true;
1141         }
1142
1143         return false;
1144 }
1145
1146 /**
1147  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1148  * @vsi: the VSI to be searched
1149  * @macaddr: the mac address to be filtered
1150  * @is_vf: true if it is a vf
1151  * @is_netdev: true if it is a netdev
1152  *
1153  * Goes through all the macvlan filters and adds a
1154  * macvlan filter for each unique vlan that already exists
1155  *
1156  * Returns first filter found on success, else NULL
1157  **/
1158 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1159                                              bool is_vf, bool is_netdev)
1160 {
1161         struct i40e_mac_filter *f;
1162
1163         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1164                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1165                                       is_vf, is_netdev)) {
1166                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1167                                              is_vf, is_netdev))
1168                                 return NULL;
1169                 }
1170         }
1171
1172         return list_first_entry_or_null(&vsi->mac_filter_list,
1173                                         struct i40e_mac_filter, list);
1174 }
1175
1176 /**
1177  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1178  * @vsi: the PF Main VSI - inappropriate for any other VSI
1179  * @macaddr: the MAC address
1180  **/
1181 static void i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1182 {
1183         struct i40e_aqc_remove_macvlan_element_data element;
1184         struct i40e_pf *pf = vsi->back;
1185         i40e_status aq_ret;
1186
1187         /* Only appropriate for the PF main VSI */
1188         if (vsi->type != I40E_VSI_MAIN)
1189                 return;
1190
1191         ether_addr_copy(element.mac_addr, macaddr);
1192         element.vlan_tag = 0;
1193         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1194                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1195         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1196         if (aq_ret)
1197                 dev_err(&pf->pdev->dev, "Could not remove default MAC-VLAN\n");
1198 }
1199
1200 /**
1201  * i40e_add_filter - Add a mac/vlan filter to the VSI
1202  * @vsi: the VSI to be searched
1203  * @macaddr: the MAC address
1204  * @vlan: the vlan
1205  * @is_vf: make sure its a vf filter, else doesn't matter
1206  * @is_netdev: make sure its a netdev filter, else doesn't matter
1207  *
1208  * Returns ptr to the filter object or NULL when no memory available.
1209  **/
1210 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1211                                         u8 *macaddr, s16 vlan,
1212                                         bool is_vf, bool is_netdev)
1213 {
1214         struct i40e_mac_filter *f;
1215
1216         if (!vsi || !macaddr)
1217                 return NULL;
1218
1219         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1220         if (!f) {
1221                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1222                 if (!f)
1223                         goto add_filter_out;
1224
1225                 ether_addr_copy(f->macaddr, macaddr);
1226                 f->vlan = vlan;
1227                 f->changed = true;
1228
1229                 INIT_LIST_HEAD(&f->list);
1230                 list_add(&f->list, &vsi->mac_filter_list);
1231         }
1232
1233         /* increment counter and add a new flag if needed */
1234         if (is_vf) {
1235                 if (!f->is_vf) {
1236                         f->is_vf = true;
1237                         f->counter++;
1238                 }
1239         } else if (is_netdev) {
1240                 if (!f->is_netdev) {
1241                         f->is_netdev = true;
1242                         f->counter++;
1243                 }
1244         } else {
1245                 f->counter++;
1246         }
1247
1248         /* changed tells sync_filters_subtask to
1249          * push the filter down to the firmware
1250          */
1251         if (f->changed) {
1252                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1253                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1254         }
1255
1256 add_filter_out:
1257         return f;
1258 }
1259
1260 /**
1261  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1262  * @vsi: the VSI to be searched
1263  * @macaddr: the MAC address
1264  * @vlan: the vlan
1265  * @is_vf: make sure it's a vf filter, else doesn't matter
1266  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1267  **/
1268 void i40e_del_filter(struct i40e_vsi *vsi,
1269                      u8 *macaddr, s16 vlan,
1270                      bool is_vf, bool is_netdev)
1271 {
1272         struct i40e_mac_filter *f;
1273
1274         if (!vsi || !macaddr)
1275                 return;
1276
1277         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1278         if (!f || f->counter == 0)
1279                 return;
1280
1281         if (is_vf) {
1282                 if (f->is_vf) {
1283                         f->is_vf = false;
1284                         f->counter--;
1285                 }
1286         } else if (is_netdev) {
1287                 if (f->is_netdev) {
1288                         f->is_netdev = false;
1289                         f->counter--;
1290                 }
1291         } else {
1292                 /* make sure we don't remove a filter in use by vf or netdev */
1293                 int min_f = 0;
1294                 min_f += (f->is_vf ? 1 : 0);
1295                 min_f += (f->is_netdev ? 1 : 0);
1296
1297                 if (f->counter > min_f)
1298                         f->counter--;
1299         }
1300
1301         /* counter == 0 tells sync_filters_subtask to
1302          * remove the filter from the firmware's list
1303          */
1304         if (f->counter == 0) {
1305                 f->changed = true;
1306                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1307                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1308         }
1309 }
1310
1311 /**
1312  * i40e_set_mac - NDO callback to set mac address
1313  * @netdev: network interface device structure
1314  * @p: pointer to an address structure
1315  *
1316  * Returns 0 on success, negative on failure
1317  **/
1318 static int i40e_set_mac(struct net_device *netdev, void *p)
1319 {
1320         struct i40e_netdev_priv *np = netdev_priv(netdev);
1321         struct i40e_vsi *vsi = np->vsi;
1322         struct sockaddr *addr = p;
1323         struct i40e_mac_filter *f;
1324
1325         if (!is_valid_ether_addr(addr->sa_data))
1326                 return -EADDRNOTAVAIL;
1327
1328         netdev_info(netdev, "set mac address=%pM\n", addr->sa_data);
1329
1330         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1331             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1332                 return -EADDRNOTAVAIL;
1333
1334         if (vsi->type == I40E_VSI_MAIN) {
1335                 i40e_status ret;
1336                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1337                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1338                                                 addr->sa_data, NULL);
1339                 if (ret) {
1340                         netdev_info(netdev,
1341                                     "Addr change for Main VSI failed: %d\n",
1342                                     ret);
1343                         return -EADDRNOTAVAIL;
1344                 }
1345         }
1346
1347         f = i40e_find_mac(vsi, addr->sa_data, false, true);
1348         if (!f) {
1349                 /* In order to be sure to not drop any packets, add the
1350                  * new address first then delete the old one.
1351                  */
1352                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1353                                     false, false);
1354                 if (!f)
1355                         return -ENOMEM;
1356
1357                 i40e_sync_vsi_filters(vsi);
1358                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1359                                 false, false);
1360                 i40e_sync_vsi_filters(vsi);
1361         }
1362
1363         f->is_laa = true;
1364         if (!ether_addr_equal(netdev->dev_addr, addr->sa_data))
1365                 ether_addr_copy(netdev->dev_addr, addr->sa_data);
1366
1367         return 0;
1368 }
1369
1370 /**
1371  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1372  * @vsi: the VSI being setup
1373  * @ctxt: VSI context structure
1374  * @enabled_tc: Enabled TCs bitmap
1375  * @is_add: True if called before Add VSI
1376  *
1377  * Setup VSI queue mapping for enabled traffic classes.
1378  **/
1379 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1380                                      struct i40e_vsi_context *ctxt,
1381                                      u8 enabled_tc,
1382                                      bool is_add)
1383 {
1384         struct i40e_pf *pf = vsi->back;
1385         u16 sections = 0;
1386         u8 netdev_tc = 0;
1387         u16 numtc = 0;
1388         u16 qcount;
1389         u8 offset;
1390         u16 qmap;
1391         int i;
1392         u16 num_tc_qps = 0;
1393
1394         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1395         offset = 0;
1396
1397         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1398                 /* Find numtc from enabled TC bitmap */
1399                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1400                         if (enabled_tc & (1 << i)) /* TC is enabled */
1401                                 numtc++;
1402                 }
1403                 if (!numtc) {
1404                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1405                         numtc = 1;
1406                 }
1407         } else {
1408                 /* At least TC0 is enabled in case of non-DCB case */
1409                 numtc = 1;
1410         }
1411
1412         vsi->tc_config.numtc = numtc;
1413         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1414         /* Number of queues per enabled TC */
1415         num_tc_qps = vsi->alloc_queue_pairs/numtc;
1416         num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
1417
1418         /* Setup queue offset/count for all TCs for given VSI */
1419         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1420                 /* See if the given TC is enabled for the given VSI */
1421                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1422                         int pow, num_qps;
1423
1424                         switch (vsi->type) {
1425                         case I40E_VSI_MAIN:
1426                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1427                                 break;
1428                         case I40E_VSI_FDIR:
1429                         case I40E_VSI_SRIOV:
1430                         case I40E_VSI_VMDQ2:
1431                         default:
1432                                 qcount = num_tc_qps;
1433                                 WARN_ON(i != 0);
1434                                 break;
1435                         }
1436                         vsi->tc_config.tc_info[i].qoffset = offset;
1437                         vsi->tc_config.tc_info[i].qcount = qcount;
1438
1439                         /* find the power-of-2 of the number of queue pairs */
1440                         num_qps = qcount;
1441                         pow = 0;
1442                         while (num_qps && ((1 << pow) < qcount)) {
1443                                 pow++;
1444                                 num_qps >>= 1;
1445                         }
1446
1447                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1448                         qmap =
1449                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1450                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1451
1452                         offset += qcount;
1453                 } else {
1454                         /* TC is not enabled so set the offset to
1455                          * default queue and allocate one queue
1456                          * for the given TC.
1457                          */
1458                         vsi->tc_config.tc_info[i].qoffset = 0;
1459                         vsi->tc_config.tc_info[i].qcount = 1;
1460                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1461
1462                         qmap = 0;
1463                 }
1464                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1465         }
1466
1467         /* Set actual Tx/Rx queue pairs */
1468         vsi->num_queue_pairs = offset;
1469
1470         /* Scheduler section valid can only be set for ADD VSI */
1471         if (is_add) {
1472                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1473
1474                 ctxt->info.up_enable_bits = enabled_tc;
1475         }
1476         if (vsi->type == I40E_VSI_SRIOV) {
1477                 ctxt->info.mapping_flags |=
1478                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1479                 for (i = 0; i < vsi->num_queue_pairs; i++)
1480                         ctxt->info.queue_mapping[i] =
1481                                                cpu_to_le16(vsi->base_queue + i);
1482         } else {
1483                 ctxt->info.mapping_flags |=
1484                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1485                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1486         }
1487         ctxt->info.valid_sections |= cpu_to_le16(sections);
1488 }
1489
1490 /**
1491  * i40e_set_rx_mode - NDO callback to set the netdev filters
1492  * @netdev: network interface device structure
1493  **/
1494 static void i40e_set_rx_mode(struct net_device *netdev)
1495 {
1496         struct i40e_netdev_priv *np = netdev_priv(netdev);
1497         struct i40e_mac_filter *f, *ftmp;
1498         struct i40e_vsi *vsi = np->vsi;
1499         struct netdev_hw_addr *uca;
1500         struct netdev_hw_addr *mca;
1501         struct netdev_hw_addr *ha;
1502
1503         /* add addr if not already in the filter list */
1504         netdev_for_each_uc_addr(uca, netdev) {
1505                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1506                         if (i40e_is_vsi_in_vlan(vsi))
1507                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1508                                                      false, true);
1509                         else
1510                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1511                                                 false, true);
1512                 }
1513         }
1514
1515         netdev_for_each_mc_addr(mca, netdev) {
1516                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1517                         if (i40e_is_vsi_in_vlan(vsi))
1518                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1519                                                      false, true);
1520                         else
1521                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1522                                                 false, true);
1523                 }
1524         }
1525
1526         /* remove filter if not in netdev list */
1527         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1528                 bool found = false;
1529
1530                 if (!f->is_netdev)
1531                         continue;
1532
1533                 if (is_multicast_ether_addr(f->macaddr)) {
1534                         netdev_for_each_mc_addr(mca, netdev) {
1535                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1536                                         found = true;
1537                                         break;
1538                                 }
1539                         }
1540                 } else {
1541                         netdev_for_each_uc_addr(uca, netdev) {
1542                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1543                                         found = true;
1544                                         break;
1545                                 }
1546                         }
1547
1548                         for_each_dev_addr(netdev, ha) {
1549                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1550                                         found = true;
1551                                         break;
1552                                 }
1553                         }
1554                 }
1555                 if (!found)
1556                         i40e_del_filter(
1557                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1558         }
1559
1560         /* check for other flag changes */
1561         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1562                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1563                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1564         }
1565 }
1566
1567 /**
1568  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1569  * @vsi: ptr to the VSI
1570  *
1571  * Push any outstanding VSI filter changes through the AdminQ.
1572  *
1573  * Returns 0 or error value
1574  **/
1575 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1576 {
1577         struct i40e_mac_filter *f, *ftmp;
1578         bool promisc_forced_on = false;
1579         bool add_happened = false;
1580         int filter_list_len = 0;
1581         u32 changed_flags = 0;
1582         i40e_status aq_ret = 0;
1583         struct i40e_pf *pf;
1584         int num_add = 0;
1585         int num_del = 0;
1586         u16 cmd_flags;
1587
1588         /* empty array typed pointers, kcalloc later */
1589         struct i40e_aqc_add_macvlan_element_data *add_list;
1590         struct i40e_aqc_remove_macvlan_element_data *del_list;
1591
1592         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1593                 usleep_range(1000, 2000);
1594         pf = vsi->back;
1595
1596         if (vsi->netdev) {
1597                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1598                 vsi->current_netdev_flags = vsi->netdev->flags;
1599         }
1600
1601         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1602                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1603
1604                 filter_list_len = pf->hw.aq.asq_buf_size /
1605                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1606                 del_list = kcalloc(filter_list_len,
1607                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1608                             GFP_KERNEL);
1609                 if (!del_list)
1610                         return -ENOMEM;
1611
1612                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1613                         if (!f->changed)
1614                                 continue;
1615
1616                         if (f->counter != 0)
1617                                 continue;
1618                         f->changed = false;
1619                         cmd_flags = 0;
1620
1621                         /* add to delete list */
1622                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1623                         del_list[num_del].vlan_tag =
1624                                 cpu_to_le16((u16)(f->vlan ==
1625                                             I40E_VLAN_ANY ? 0 : f->vlan));
1626
1627                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1628                         del_list[num_del].flags = cmd_flags;
1629                         num_del++;
1630
1631                         /* unlink from filter list */
1632                         list_del(&f->list);
1633                         kfree(f);
1634
1635                         /* flush a full buffer */
1636                         if (num_del == filter_list_len) {
1637                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1638                                             vsi->seid, del_list, num_del,
1639                                             NULL);
1640                                 num_del = 0;
1641                                 memset(del_list, 0, sizeof(*del_list));
1642
1643                                 if (aq_ret &&
1644                                     pf->hw.aq.asq_last_status !=
1645                                                               I40E_AQ_RC_ENOENT)
1646                                         dev_info(&pf->pdev->dev,
1647                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1648                                                  aq_ret,
1649                                                  pf->hw.aq.asq_last_status);
1650                         }
1651                 }
1652                 if (num_del) {
1653                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1654                                                      del_list, num_del, NULL);
1655                         num_del = 0;
1656
1657                         if (aq_ret &&
1658                             pf->hw.aq.asq_last_status != I40E_AQ_RC_ENOENT)
1659                                 dev_info(&pf->pdev->dev,
1660                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1661                                          aq_ret, pf->hw.aq.asq_last_status);
1662                 }
1663
1664                 kfree(del_list);
1665                 del_list = NULL;
1666
1667                 /* do all the adds now */
1668                 filter_list_len = pf->hw.aq.asq_buf_size /
1669                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1670                 add_list = kcalloc(filter_list_len,
1671                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1672                                GFP_KERNEL);
1673                 if (!add_list)
1674                         return -ENOMEM;
1675
1676                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1677                         if (!f->changed)
1678                                 continue;
1679
1680                         if (f->counter == 0)
1681                                 continue;
1682                         f->changed = false;
1683                         add_happened = true;
1684                         cmd_flags = 0;
1685
1686                         /* add to add array */
1687                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1688                         add_list[num_add].vlan_tag =
1689                                 cpu_to_le16(
1690                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1691                         add_list[num_add].queue_number = 0;
1692
1693                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1694                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1695                         num_add++;
1696
1697                         /* flush a full buffer */
1698                         if (num_add == filter_list_len) {
1699                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1700                                                              add_list, num_add,
1701                                                              NULL);
1702                                 num_add = 0;
1703
1704                                 if (aq_ret)
1705                                         break;
1706                                 memset(add_list, 0, sizeof(*add_list));
1707                         }
1708                 }
1709                 if (num_add) {
1710                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1711                                                      add_list, num_add, NULL);
1712                         num_add = 0;
1713                 }
1714                 kfree(add_list);
1715                 add_list = NULL;
1716
1717                 if (add_happened && (!aq_ret)) {
1718                         /* do nothing */;
1719                 } else if (add_happened && (aq_ret)) {
1720                         dev_info(&pf->pdev->dev,
1721                                  "add filter failed, err %d, aq_err %d\n",
1722                                  aq_ret, pf->hw.aq.asq_last_status);
1723                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1724                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1725                                       &vsi->state)) {
1726                                 promisc_forced_on = true;
1727                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1728                                         &vsi->state);
1729                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1730                         }
1731                 }
1732         }
1733
1734         /* check for changes in promiscuous modes */
1735         if (changed_flags & IFF_ALLMULTI) {
1736                 bool cur_multipromisc;
1737                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1738                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1739                                                                vsi->seid,
1740                                                                cur_multipromisc,
1741                                                                NULL);
1742                 if (aq_ret)
1743                         dev_info(&pf->pdev->dev,
1744                                  "set multi promisc failed, err %d, aq_err %d\n",
1745                                  aq_ret, pf->hw.aq.asq_last_status);
1746         }
1747         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1748                 bool cur_promisc;
1749                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1750                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1751                                         &vsi->state));
1752                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1753                                                              vsi->seid,
1754                                                              cur_promisc, NULL);
1755                 if (aq_ret)
1756                         dev_info(&pf->pdev->dev,
1757                                  "set uni promisc failed, err %d, aq_err %d\n",
1758                                  aq_ret, pf->hw.aq.asq_last_status);
1759                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1760                                                    vsi->seid,
1761                                                    cur_promisc, NULL);
1762                 if (aq_ret)
1763                         dev_info(&pf->pdev->dev,
1764                                  "set brdcast promisc failed, err %d, aq_err %d\n",
1765                                  aq_ret, pf->hw.aq.asq_last_status);
1766         }
1767
1768         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1769         return 0;
1770 }
1771
1772 /**
1773  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1774  * @pf: board private structure
1775  **/
1776 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1777 {
1778         int v;
1779
1780         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1781                 return;
1782         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1783
1784         for (v = 0; v < pf->num_alloc_vsi; v++) {
1785                 if (pf->vsi[v] &&
1786                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1787                         i40e_sync_vsi_filters(pf->vsi[v]);
1788         }
1789 }
1790
1791 /**
1792  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1793  * @netdev: network interface device structure
1794  * @new_mtu: new value for maximum frame size
1795  *
1796  * Returns 0 on success, negative on failure
1797  **/
1798 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1799 {
1800         struct i40e_netdev_priv *np = netdev_priv(netdev);
1801         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1802         struct i40e_vsi *vsi = np->vsi;
1803
1804         /* MTU < 68 is an error and causes problems on some kernels */
1805         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1806                 return -EINVAL;
1807
1808         netdev_info(netdev, "changing MTU from %d to %d\n",
1809                     netdev->mtu, new_mtu);
1810         netdev->mtu = new_mtu;
1811         if (netif_running(netdev))
1812                 i40e_vsi_reinit_locked(vsi);
1813
1814         return 0;
1815 }
1816
1817 /**
1818  * i40e_ioctl - Access the hwtstamp interface
1819  * @netdev: network interface device structure
1820  * @ifr: interface request data
1821  * @cmd: ioctl command
1822  **/
1823 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1824 {
1825         struct i40e_netdev_priv *np = netdev_priv(netdev);
1826         struct i40e_pf *pf = np->vsi->back;
1827
1828         switch (cmd) {
1829         case SIOCGHWTSTAMP:
1830                 return i40e_ptp_get_ts_config(pf, ifr);
1831         case SIOCSHWTSTAMP:
1832                 return i40e_ptp_set_ts_config(pf, ifr);
1833         default:
1834                 return -EOPNOTSUPP;
1835         }
1836 }
1837
1838 /**
1839  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1840  * @vsi: the vsi being adjusted
1841  **/
1842 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1843 {
1844         struct i40e_vsi_context ctxt;
1845         i40e_status ret;
1846
1847         if ((vsi->info.valid_sections &
1848              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1849             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1850                 return;  /* already enabled */
1851
1852         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1853         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1854                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1855
1856         ctxt.seid = vsi->seid;
1857         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1858         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1859         if (ret) {
1860                 dev_info(&vsi->back->pdev->dev,
1861                          "%s: update vsi failed, aq_err=%d\n",
1862                          __func__, vsi->back->hw.aq.asq_last_status);
1863         }
1864 }
1865
1866 /**
1867  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1868  * @vsi: the vsi being adjusted
1869  **/
1870 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1871 {
1872         struct i40e_vsi_context ctxt;
1873         i40e_status ret;
1874
1875         if ((vsi->info.valid_sections &
1876              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1877             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1878              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1879                 return;  /* already disabled */
1880
1881         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1882         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1883                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1884
1885         ctxt.seid = vsi->seid;
1886         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1887         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1888         if (ret) {
1889                 dev_info(&vsi->back->pdev->dev,
1890                          "%s: update vsi failed, aq_err=%d\n",
1891                          __func__, vsi->back->hw.aq.asq_last_status);
1892         }
1893 }
1894
1895 /**
1896  * i40e_vlan_rx_register - Setup or shutdown vlan offload
1897  * @netdev: network interface to be adjusted
1898  * @features: netdev features to test if VLAN offload is enabled or not
1899  **/
1900 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
1901 {
1902         struct i40e_netdev_priv *np = netdev_priv(netdev);
1903         struct i40e_vsi *vsi = np->vsi;
1904
1905         if (features & NETIF_F_HW_VLAN_CTAG_RX)
1906                 i40e_vlan_stripping_enable(vsi);
1907         else
1908                 i40e_vlan_stripping_disable(vsi);
1909 }
1910
1911 /**
1912  * i40e_vsi_add_vlan - Add vsi membership for given vlan
1913  * @vsi: the vsi being configured
1914  * @vid: vlan id to be added (0 = untagged only , -1 = any)
1915  **/
1916 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
1917 {
1918         struct i40e_mac_filter *f, *add_f;
1919         bool is_netdev, is_vf;
1920
1921         is_vf = (vsi->type == I40E_VSI_SRIOV);
1922         is_netdev = !!(vsi->netdev);
1923
1924         if (is_netdev) {
1925                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
1926                                         is_vf, is_netdev);
1927                 if (!add_f) {
1928                         dev_info(&vsi->back->pdev->dev,
1929                                  "Could not add vlan filter %d for %pM\n",
1930                                  vid, vsi->netdev->dev_addr);
1931                         return -ENOMEM;
1932                 }
1933         }
1934
1935         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1936                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
1937                 if (!add_f) {
1938                         dev_info(&vsi->back->pdev->dev,
1939                                  "Could not add vlan filter %d for %pM\n",
1940                                  vid, f->macaddr);
1941                         return -ENOMEM;
1942                 }
1943         }
1944
1945         /* Now if we add a vlan tag, make sure to check if it is the first
1946          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
1947          * with 0, so we now accept untagged and specified tagged traffic
1948          * (and not any taged and untagged)
1949          */
1950         if (vid > 0) {
1951                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
1952                                                   I40E_VLAN_ANY,
1953                                                   is_vf, is_netdev)) {
1954                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
1955                                         I40E_VLAN_ANY, is_vf, is_netdev);
1956                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
1957                                                 is_vf, is_netdev);
1958                         if (!add_f) {
1959                                 dev_info(&vsi->back->pdev->dev,
1960                                          "Could not add filter 0 for %pM\n",
1961                                          vsi->netdev->dev_addr);
1962                                 return -ENOMEM;
1963                         }
1964                 }
1965         }
1966
1967         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
1968         if (vid > 0 && !vsi->info.pvid) {
1969                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
1970                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1971                                              is_vf, is_netdev)) {
1972                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
1973                                                 is_vf, is_netdev);
1974                                 add_f = i40e_add_filter(vsi, f->macaddr,
1975                                                         0, is_vf, is_netdev);
1976                                 if (!add_f) {
1977                                         dev_info(&vsi->back->pdev->dev,
1978                                                  "Could not add filter 0 for %pM\n",
1979                                                  f->macaddr);
1980                                         return -ENOMEM;
1981                                 }
1982                         }
1983                 }
1984         }
1985
1986         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1987             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1988                 return 0;
1989
1990         return i40e_sync_vsi_filters(vsi);
1991 }
1992
1993 /**
1994  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
1995  * @vsi: the vsi being configured
1996  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
1997  *
1998  * Return: 0 on success or negative otherwise
1999  **/
2000 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2001 {
2002         struct net_device *netdev = vsi->netdev;
2003         struct i40e_mac_filter *f, *add_f;
2004         bool is_vf, is_netdev;
2005         int filter_count = 0;
2006
2007         is_vf = (vsi->type == I40E_VSI_SRIOV);
2008         is_netdev = !!(netdev);
2009
2010         if (is_netdev)
2011                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2012
2013         list_for_each_entry(f, &vsi->mac_filter_list, list)
2014                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2015
2016         /* go through all the filters for this VSI and if there is only
2017          * vid == 0 it means there are no other filters, so vid 0 must
2018          * be replaced with -1. This signifies that we should from now
2019          * on accept any traffic (with any tag present, or untagged)
2020          */
2021         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2022                 if (is_netdev) {
2023                         if (f->vlan &&
2024                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2025                                 filter_count++;
2026                 }
2027
2028                 if (f->vlan)
2029                         filter_count++;
2030         }
2031
2032         if (!filter_count && is_netdev) {
2033                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2034                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2035                                     is_vf, is_netdev);
2036                 if (!f) {
2037                         dev_info(&vsi->back->pdev->dev,
2038                                  "Could not add filter %d for %pM\n",
2039                                  I40E_VLAN_ANY, netdev->dev_addr);
2040                         return -ENOMEM;
2041                 }
2042         }
2043
2044         if (!filter_count) {
2045                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2046                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2047                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2048                                             is_vf, is_netdev);
2049                         if (!add_f) {
2050                                 dev_info(&vsi->back->pdev->dev,
2051                                          "Could not add filter %d for %pM\n",
2052                                          I40E_VLAN_ANY, f->macaddr);
2053                                 return -ENOMEM;
2054                         }
2055                 }
2056         }
2057
2058         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2059             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2060                 return 0;
2061
2062         return i40e_sync_vsi_filters(vsi);
2063 }
2064
2065 /**
2066  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2067  * @netdev: network interface to be adjusted
2068  * @vid: vlan id to be added
2069  *
2070  * net_device_ops implementation for adding vlan ids
2071  **/
2072 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2073                                 __always_unused __be16 proto, u16 vid)
2074 {
2075         struct i40e_netdev_priv *np = netdev_priv(netdev);
2076         struct i40e_vsi *vsi = np->vsi;
2077         int ret = 0;
2078
2079         if (vid > 4095)
2080                 return -EINVAL;
2081
2082         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2083
2084         /* If the network stack called us with vid = 0 then
2085          * it is asking to receive priority tagged packets with
2086          * vlan id 0.  Our HW receives them by default when configured
2087          * to receive untagged packets so there is no need to add an
2088          * extra filter for vlan 0 tagged packets.
2089          */
2090         if (vid)
2091                 ret = i40e_vsi_add_vlan(vsi, vid);
2092
2093         if (!ret && (vid < VLAN_N_VID))
2094                 set_bit(vid, vsi->active_vlans);
2095
2096         return ret;
2097 }
2098
2099 /**
2100  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2101  * @netdev: network interface to be adjusted
2102  * @vid: vlan id to be removed
2103  *
2104  * net_device_ops implementation for removing vlan ids
2105  **/
2106 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2107                                  __always_unused __be16 proto, u16 vid)
2108 {
2109         struct i40e_netdev_priv *np = netdev_priv(netdev);
2110         struct i40e_vsi *vsi = np->vsi;
2111
2112         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2113
2114         /* return code is ignored as there is nothing a user
2115          * can do about failure to remove and a log message was
2116          * already printed from the other function
2117          */
2118         i40e_vsi_kill_vlan(vsi, vid);
2119
2120         clear_bit(vid, vsi->active_vlans);
2121
2122         return 0;
2123 }
2124
2125 /**
2126  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2127  * @vsi: the vsi being brought back up
2128  **/
2129 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2130 {
2131         u16 vid;
2132
2133         if (!vsi->netdev)
2134                 return;
2135
2136         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2137
2138         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2139                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2140                                      vid);
2141 }
2142
2143 /**
2144  * i40e_vsi_add_pvid - Add pvid for the VSI
2145  * @vsi: the vsi being adjusted
2146  * @vid: the vlan id to set as a PVID
2147  **/
2148 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2149 {
2150         struct i40e_vsi_context ctxt;
2151         i40e_status aq_ret;
2152
2153         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2154         vsi->info.pvid = cpu_to_le16(vid);
2155         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2156                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2157                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2158
2159         ctxt.seid = vsi->seid;
2160         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2161         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2162         if (aq_ret) {
2163                 dev_info(&vsi->back->pdev->dev,
2164                          "%s: update vsi failed, aq_err=%d\n",
2165                          __func__, vsi->back->hw.aq.asq_last_status);
2166                 return -ENOENT;
2167         }
2168
2169         return 0;
2170 }
2171
2172 /**
2173  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2174  * @vsi: the vsi being adjusted
2175  *
2176  * Just use the vlan_rx_register() service to put it back to normal
2177  **/
2178 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2179 {
2180         i40e_vlan_stripping_disable(vsi);
2181
2182         vsi->info.pvid = 0;
2183 }
2184
2185 /**
2186  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2187  * @vsi: ptr to the VSI
2188  *
2189  * If this function returns with an error, then it's possible one or
2190  * more of the rings is populated (while the rest are not).  It is the
2191  * callers duty to clean those orphaned rings.
2192  *
2193  * Return 0 on success, negative on failure
2194  **/
2195 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2196 {
2197         int i, err = 0;
2198
2199         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2200                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2201
2202         return err;
2203 }
2204
2205 /**
2206  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2207  * @vsi: ptr to the VSI
2208  *
2209  * Free VSI's transmit software resources
2210  **/
2211 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2212 {
2213         int i;
2214
2215         if (!vsi->tx_rings)
2216                 return;
2217
2218         for (i = 0; i < vsi->num_queue_pairs; i++)
2219                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2220                         i40e_free_tx_resources(vsi->tx_rings[i]);
2221 }
2222
2223 /**
2224  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2225  * @vsi: ptr to the VSI
2226  *
2227  * If this function returns with an error, then it's possible one or
2228  * more of the rings is populated (while the rest are not).  It is the
2229  * callers duty to clean those orphaned rings.
2230  *
2231  * Return 0 on success, negative on failure
2232  **/
2233 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2234 {
2235         int i, err = 0;
2236
2237         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2238                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2239         return err;
2240 }
2241
2242 /**
2243  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2244  * @vsi: ptr to the VSI
2245  *
2246  * Free all receive software resources
2247  **/
2248 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2249 {
2250         int i;
2251
2252         if (!vsi->rx_rings)
2253                 return;
2254
2255         for (i = 0; i < vsi->num_queue_pairs; i++)
2256                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2257                         i40e_free_rx_resources(vsi->rx_rings[i]);
2258 }
2259
2260 /**
2261  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2262  * @ring: The Tx ring to configure
2263  *
2264  * Configure the Tx descriptor ring in the HMC context.
2265  **/
2266 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2267 {
2268         struct i40e_vsi *vsi = ring->vsi;
2269         u16 pf_q = vsi->base_queue + ring->queue_index;
2270         struct i40e_hw *hw = &vsi->back->hw;
2271         struct i40e_hmc_obj_txq tx_ctx;
2272         i40e_status err = 0;
2273         u32 qtx_ctl = 0;
2274
2275         /* some ATR related tx ring init */
2276         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2277                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2278                 ring->atr_count = 0;
2279         } else {
2280                 ring->atr_sample_rate = 0;
2281         }
2282
2283         /* initialize XPS */
2284         if (ring->q_vector && ring->netdev &&
2285             vsi->tc_config.numtc <= 1 &&
2286             !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2287                 netif_set_xps_queue(ring->netdev,
2288                                     &ring->q_vector->affinity_mask,
2289                                     ring->queue_index);
2290
2291         /* clear the context structure first */
2292         memset(&tx_ctx, 0, sizeof(tx_ctx));
2293
2294         tx_ctx.new_context = 1;
2295         tx_ctx.base = (ring->dma / 128);
2296         tx_ctx.qlen = ring->count;
2297         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2298                                                I40E_FLAG_FD_ATR_ENABLED));
2299         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2300         /* FDIR VSI tx ring can still use RS bit and writebacks */
2301         if (vsi->type != I40E_VSI_FDIR)
2302                 tx_ctx.head_wb_ena = 1;
2303         tx_ctx.head_wb_addr = ring->dma +
2304                               (ring->count * sizeof(struct i40e_tx_desc));
2305
2306         /* As part of VSI creation/update, FW allocates certain
2307          * Tx arbitration queue sets for each TC enabled for
2308          * the VSI. The FW returns the handles to these queue
2309          * sets as part of the response buffer to Add VSI,
2310          * Update VSI, etc. AQ commands. It is expected that
2311          * these queue set handles be associated with the Tx
2312          * queues by the driver as part of the TX queue context
2313          * initialization. This has to be done regardless of
2314          * DCB as by default everything is mapped to TC0.
2315          */
2316         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2317         tx_ctx.rdylist_act = 0;
2318
2319         /* clear the context in the HMC */
2320         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2321         if (err) {
2322                 dev_info(&vsi->back->pdev->dev,
2323                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2324                          ring->queue_index, pf_q, err);
2325                 return -ENOMEM;
2326         }
2327
2328         /* set the context in the HMC */
2329         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2330         if (err) {
2331                 dev_info(&vsi->back->pdev->dev,
2332                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2333                          ring->queue_index, pf_q, err);
2334                 return -ENOMEM;
2335         }
2336
2337         /* Now associate this queue with this PCI function */
2338         if (vsi->type == I40E_VSI_VMDQ2)
2339                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2340         else
2341                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2342         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2343                     I40E_QTX_CTL_PF_INDX_MASK);
2344         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2345         i40e_flush(hw);
2346
2347         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2348
2349         /* cache tail off for easier writes later */
2350         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2351
2352         return 0;
2353 }
2354
2355 /**
2356  * i40e_configure_rx_ring - Configure a receive ring context
2357  * @ring: The Rx ring to configure
2358  *
2359  * Configure the Rx descriptor ring in the HMC context.
2360  **/
2361 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2362 {
2363         struct i40e_vsi *vsi = ring->vsi;
2364         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2365         u16 pf_q = vsi->base_queue + ring->queue_index;
2366         struct i40e_hw *hw = &vsi->back->hw;
2367         struct i40e_hmc_obj_rxq rx_ctx;
2368         i40e_status err = 0;
2369
2370         ring->state = 0;
2371
2372         /* clear the context structure first */
2373         memset(&rx_ctx, 0, sizeof(rx_ctx));
2374
2375         ring->rx_buf_len = vsi->rx_buf_len;
2376         ring->rx_hdr_len = vsi->rx_hdr_len;
2377
2378         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2379         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2380
2381         rx_ctx.base = (ring->dma / 128);
2382         rx_ctx.qlen = ring->count;
2383
2384         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2385                 set_ring_16byte_desc_enabled(ring);
2386                 rx_ctx.dsize = 0;
2387         } else {
2388                 rx_ctx.dsize = 1;
2389         }
2390
2391         rx_ctx.dtype = vsi->dtype;
2392         if (vsi->dtype) {
2393                 set_ring_ps_enabled(ring);
2394                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2395                                   I40E_RX_SPLIT_IP      |
2396                                   I40E_RX_SPLIT_TCP_UDP |
2397                                   I40E_RX_SPLIT_SCTP;
2398         } else {
2399                 rx_ctx.hsplit_0 = 0;
2400         }
2401
2402         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2403                                   (chain_len * ring->rx_buf_len));
2404         rx_ctx.tphrdesc_ena = 1;
2405         rx_ctx.tphwdesc_ena = 1;
2406         rx_ctx.tphdata_ena = 1;
2407         rx_ctx.tphhead_ena = 1;
2408         if (hw->revision_id == 0)
2409                 rx_ctx.lrxqthresh = 0;
2410         else
2411                 rx_ctx.lrxqthresh = 2;
2412         rx_ctx.crcstrip = 1;
2413         rx_ctx.l2tsel = 1;
2414         rx_ctx.showiv = 1;
2415         /* set the prefena field to 1 because the manual says to */
2416         rx_ctx.prefena = 1;
2417
2418         /* clear the context in the HMC */
2419         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2420         if (err) {
2421                 dev_info(&vsi->back->pdev->dev,
2422                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2423                          ring->queue_index, pf_q, err);
2424                 return -ENOMEM;
2425         }
2426
2427         /* set the context in the HMC */
2428         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2429         if (err) {
2430                 dev_info(&vsi->back->pdev->dev,
2431                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2432                          ring->queue_index, pf_q, err);
2433                 return -ENOMEM;
2434         }
2435
2436         /* cache tail for quicker writes, and clear the reg before use */
2437         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2438         writel(0, ring->tail);
2439
2440         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2441
2442         return 0;
2443 }
2444
2445 /**
2446  * i40e_vsi_configure_tx - Configure the VSI for Tx
2447  * @vsi: VSI structure describing this set of rings and resources
2448  *
2449  * Configure the Tx VSI for operation.
2450  **/
2451 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2452 {
2453         int err = 0;
2454         u16 i;
2455
2456         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2457                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2458
2459         return err;
2460 }
2461
2462 /**
2463  * i40e_vsi_configure_rx - Configure the VSI for Rx
2464  * @vsi: the VSI being configured
2465  *
2466  * Configure the Rx VSI for operation.
2467  **/
2468 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2469 {
2470         int err = 0;
2471         u16 i;
2472
2473         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2474                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2475                                + ETH_FCS_LEN + VLAN_HLEN;
2476         else
2477                 vsi->max_frame = I40E_RXBUFFER_2048;
2478
2479         /* figure out correct receive buffer length */
2480         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2481                                     I40E_FLAG_RX_PS_ENABLED)) {
2482         case I40E_FLAG_RX_1BUF_ENABLED:
2483                 vsi->rx_hdr_len = 0;
2484                 vsi->rx_buf_len = vsi->max_frame;
2485                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2486                 break;
2487         case I40E_FLAG_RX_PS_ENABLED:
2488                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2489                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2490                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2491                 break;
2492         default:
2493                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2494                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2495                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2496                 break;
2497         }
2498
2499         /* round up for the chip's needs */
2500         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2501                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2502         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2503                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2504
2505         /* set up individual rings */
2506         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2507                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2508
2509         return err;
2510 }
2511
2512 /**
2513  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2514  * @vsi: ptr to the VSI
2515  **/
2516 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2517 {
2518         struct i40e_ring *tx_ring, *rx_ring;
2519         u16 qoffset, qcount;
2520         int i, n;
2521
2522         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2523                 return;
2524
2525         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2526                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2527                         continue;
2528
2529                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2530                 qcount = vsi->tc_config.tc_info[n].qcount;
2531                 for (i = qoffset; i < (qoffset + qcount); i++) {
2532                         rx_ring = vsi->rx_rings[i];
2533                         tx_ring = vsi->tx_rings[i];
2534                         rx_ring->dcb_tc = n;
2535                         tx_ring->dcb_tc = n;
2536                 }
2537         }
2538 }
2539
2540 /**
2541  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2542  * @vsi: ptr to the VSI
2543  **/
2544 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2545 {
2546         if (vsi->netdev)
2547                 i40e_set_rx_mode(vsi->netdev);
2548 }
2549
2550 /**
2551  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2552  * @vsi: Pointer to the targeted VSI
2553  *
2554  * This function replays the hlist on the hw where all the SB Flow Director
2555  * filters were saved.
2556  **/
2557 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2558 {
2559         struct i40e_fdir_filter *filter;
2560         struct i40e_pf *pf = vsi->back;
2561         struct hlist_node *node;
2562
2563         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2564                 return;
2565
2566         hlist_for_each_entry_safe(filter, node,
2567                                   &pf->fdir_filter_list, fdir_node) {
2568                 i40e_add_del_fdir(vsi, filter, true);
2569         }
2570 }
2571
2572 /**
2573  * i40e_vsi_configure - Set up the VSI for action
2574  * @vsi: the VSI being configured
2575  **/
2576 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2577 {
2578         int err;
2579
2580         i40e_set_vsi_rx_mode(vsi);
2581         i40e_restore_vlan(vsi);
2582         i40e_vsi_config_dcb_rings(vsi);
2583         err = i40e_vsi_configure_tx(vsi);
2584         if (!err)
2585                 err = i40e_vsi_configure_rx(vsi);
2586
2587         return err;
2588 }
2589
2590 /**
2591  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2592  * @vsi: the VSI being configured
2593  **/
2594 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2595 {
2596         struct i40e_pf *pf = vsi->back;
2597         struct i40e_q_vector *q_vector;
2598         struct i40e_hw *hw = &pf->hw;
2599         u16 vector;
2600         int i, q;
2601         u32 val;
2602         u32 qp;
2603
2604         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2605          * and PFINT_LNKLSTn registers, e.g.:
2606          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2607          */
2608         qp = vsi->base_queue;
2609         vector = vsi->base_vector;
2610         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2611                 q_vector = vsi->q_vectors[i];
2612                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2613                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2614                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2615                      q_vector->rx.itr);
2616                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2617                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2618                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2619                      q_vector->tx.itr);
2620
2621                 /* Linked list for the queuepairs assigned to this vector */
2622                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2623                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2624                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2625                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2626                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2627                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2628                               (I40E_QUEUE_TYPE_TX
2629                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2630
2631                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2632
2633                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2634                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2635                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2636                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2637                               (I40E_QUEUE_TYPE_RX
2638                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2639
2640                         /* Terminate the linked list */
2641                         if (q == (q_vector->num_ringpairs - 1))
2642                                 val |= (I40E_QUEUE_END_OF_LIST
2643                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2644
2645                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2646                         qp++;
2647                 }
2648         }
2649
2650         i40e_flush(hw);
2651 }
2652
2653 /**
2654  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2655  * @hw: ptr to the hardware info
2656  **/
2657 static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
2658 {
2659         u32 val;
2660
2661         /* clear things first */
2662         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2663         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2664
2665         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2666               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2667               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2668               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2669               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2670               I40E_PFINT_ICR0_ENA_TIMESYNC_MASK      |
2671               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2672               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2673               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2674
2675         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2676
2677         /* SW_ITR_IDX = 0, but don't change INTENA */
2678         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2679                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2680
2681         /* OTHER_ITR_IDX = 0 */
2682         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2683 }
2684
2685 /**
2686  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2687  * @vsi: the VSI being configured
2688  **/
2689 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2690 {
2691         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2692         struct i40e_pf *pf = vsi->back;
2693         struct i40e_hw *hw = &pf->hw;
2694         u32 val;
2695
2696         /* set the ITR configuration */
2697         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2698         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2699         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2700         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2701         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2702         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2703
2704         i40e_enable_misc_int_causes(hw);
2705
2706         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2707         wr32(hw, I40E_PFINT_LNKLST0, 0);
2708
2709         /* Associate the queue pair to the vector and enable the queue int */
2710         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2711               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2712               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2713
2714         wr32(hw, I40E_QINT_RQCTL(0), val);
2715
2716         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2717               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2718               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2719
2720         wr32(hw, I40E_QINT_TQCTL(0), val);
2721         i40e_flush(hw);
2722 }
2723
2724 /**
2725  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2726  * @pf: board private structure
2727  **/
2728 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2729 {
2730         struct i40e_hw *hw = &pf->hw;
2731
2732         wr32(hw, I40E_PFINT_DYN_CTL0,
2733              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2734         i40e_flush(hw);
2735 }
2736
2737 /**
2738  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2739  * @pf: board private structure
2740  **/
2741 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2742 {
2743         struct i40e_hw *hw = &pf->hw;
2744         u32 val;
2745
2746         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2747               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2748               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2749
2750         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2751         i40e_flush(hw);
2752 }
2753
2754 /**
2755  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2756  * @vsi: pointer to a vsi
2757  * @vector: enable a particular Hw Interrupt vector
2758  **/
2759 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2760 {
2761         struct i40e_pf *pf = vsi->back;
2762         struct i40e_hw *hw = &pf->hw;
2763         u32 val;
2764
2765         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2766               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2767               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2768         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2769         /* skip the flush */
2770 }
2771
2772 /**
2773  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
2774  * @vsi: pointer to a vsi
2775  * @vector: enable a particular Hw Interrupt vector
2776  **/
2777 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
2778 {
2779         struct i40e_pf *pf = vsi->back;
2780         struct i40e_hw *hw = &pf->hw;
2781         u32 val;
2782
2783         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
2784         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2785         i40e_flush(hw);
2786 }
2787
2788 /**
2789  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2790  * @irq: interrupt number
2791  * @data: pointer to a q_vector
2792  **/
2793 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2794 {
2795         struct i40e_q_vector *q_vector = data;
2796
2797         if (!q_vector->tx.ring && !q_vector->rx.ring)
2798                 return IRQ_HANDLED;
2799
2800         napi_schedule(&q_vector->napi);
2801
2802         return IRQ_HANDLED;
2803 }
2804
2805 /**
2806  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2807  * @vsi: the VSI being configured
2808  * @basename: name for the vector
2809  *
2810  * Allocates MSI-X vectors and requests interrupts from the kernel.
2811  **/
2812 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2813 {
2814         int q_vectors = vsi->num_q_vectors;
2815         struct i40e_pf *pf = vsi->back;
2816         int base = vsi->base_vector;
2817         int rx_int_idx = 0;
2818         int tx_int_idx = 0;
2819         int vector, err;
2820
2821         for (vector = 0; vector < q_vectors; vector++) {
2822                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2823
2824                 if (q_vector->tx.ring && q_vector->rx.ring) {
2825                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2826                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2827                         tx_int_idx++;
2828                 } else if (q_vector->rx.ring) {
2829                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2830                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
2831                 } else if (q_vector->tx.ring) {
2832                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2833                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
2834                 } else {
2835                         /* skip this unused q_vector */
2836                         continue;
2837                 }
2838                 err = request_irq(pf->msix_entries[base + vector].vector,
2839                                   vsi->irq_handler,
2840                                   0,
2841                                   q_vector->name,
2842                                   q_vector);
2843                 if (err) {
2844                         dev_info(&pf->pdev->dev,
2845                                  "%s: request_irq failed, error: %d\n",
2846                                  __func__, err);
2847                         goto free_queue_irqs;
2848                 }
2849                 /* assign the mask for this irq */
2850                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2851                                       &q_vector->affinity_mask);
2852         }
2853
2854         vsi->irqs_ready = true;
2855         return 0;
2856
2857 free_queue_irqs:
2858         while (vector) {
2859                 vector--;
2860                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2861                                       NULL);
2862                 free_irq(pf->msix_entries[base + vector].vector,
2863                          &(vsi->q_vectors[vector]));
2864         }
2865         return err;
2866 }
2867
2868 /**
2869  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
2870  * @vsi: the VSI being un-configured
2871  **/
2872 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
2873 {
2874         struct i40e_pf *pf = vsi->back;
2875         struct i40e_hw *hw = &pf->hw;
2876         int base = vsi->base_vector;
2877         int i;
2878
2879         for (i = 0; i < vsi->num_queue_pairs; i++) {
2880                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
2881                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
2882         }
2883
2884         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2885                 for (i = vsi->base_vector;
2886                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2887                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
2888
2889                 i40e_flush(hw);
2890                 for (i = 0; i < vsi->num_q_vectors; i++)
2891                         synchronize_irq(pf->msix_entries[i + base].vector);
2892         } else {
2893                 /* Legacy and MSI mode - this stops all interrupt handling */
2894                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
2895                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
2896                 i40e_flush(hw);
2897                 synchronize_irq(pf->pdev->irq);
2898         }
2899 }
2900
2901 /**
2902  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
2903  * @vsi: the VSI being configured
2904  **/
2905 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
2906 {
2907         struct i40e_pf *pf = vsi->back;
2908         int i;
2909
2910         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2911                 for (i = vsi->base_vector;
2912                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2913                         i40e_irq_dynamic_enable(vsi, i);
2914         } else {
2915                 i40e_irq_dynamic_enable_icr0(pf);
2916         }
2917
2918         i40e_flush(&pf->hw);
2919         return 0;
2920 }
2921
2922 /**
2923  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
2924  * @pf: board private structure
2925  **/
2926 static void i40e_stop_misc_vector(struct i40e_pf *pf)
2927 {
2928         /* Disable ICR 0 */
2929         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
2930         i40e_flush(&pf->hw);
2931 }
2932
2933 /**
2934  * i40e_intr - MSI/Legacy and non-queue interrupt handler
2935  * @irq: interrupt number
2936  * @data: pointer to a q_vector
2937  *
2938  * This is the handler used for all MSI/Legacy interrupts, and deals
2939  * with both queue and non-queue interrupts.  This is also used in
2940  * MSIX mode to handle the non-queue interrupts.
2941  **/
2942 static irqreturn_t i40e_intr(int irq, void *data)
2943 {
2944         struct i40e_pf *pf = (struct i40e_pf *)data;
2945         struct i40e_hw *hw = &pf->hw;
2946         irqreturn_t ret = IRQ_NONE;
2947         u32 icr0, icr0_remaining;
2948         u32 val, ena_mask;
2949
2950         icr0 = rd32(hw, I40E_PFINT_ICR0);
2951         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
2952
2953         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
2954         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
2955                 goto enable_intr;
2956
2957         /* if interrupt but no bits showing, must be SWINT */
2958         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
2959             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
2960                 pf->sw_int_count++;
2961
2962         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
2963         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
2964
2965                 /* temporarily disable queue cause for NAPI processing */
2966                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
2967                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
2968                 wr32(hw, I40E_QINT_RQCTL(0), qval);
2969
2970                 qval = rd32(hw, I40E_QINT_TQCTL(0));
2971                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
2972                 wr32(hw, I40E_QINT_TQCTL(0), qval);
2973
2974                 if (!test_bit(__I40E_DOWN, &pf->state))
2975                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
2976         }
2977
2978         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
2979                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2980                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
2981         }
2982
2983         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
2984                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
2985                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
2986         }
2987
2988         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
2989                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
2990                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
2991         }
2992
2993         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
2994                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
2995                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
2996                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
2997                 val = rd32(hw, I40E_GLGEN_RSTAT);
2998                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
2999                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3000                 if (val == I40E_RESET_CORER) {
3001                         pf->corer_count++;
3002                 } else if (val == I40E_RESET_GLOBR) {
3003                         pf->globr_count++;
3004                 } else if (val == I40E_RESET_EMPR) {
3005                         pf->empr_count++;
3006                         set_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
3007                 }
3008         }
3009
3010         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3011                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3012                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3013         }
3014
3015         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3016                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3017
3018                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3019                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3020                         i40e_ptp_tx_hwtstamp(pf);
3021                 }
3022         }
3023
3024         /* If a critical error is pending we have no choice but to reset the
3025          * device.
3026          * Report and mask out any remaining unexpected interrupts.
3027          */
3028         icr0_remaining = icr0 & ena_mask;
3029         if (icr0_remaining) {
3030                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3031                          icr0_remaining);
3032                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3033                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3034                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3035                         dev_info(&pf->pdev->dev, "device will be reset\n");
3036                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3037                         i40e_service_event_schedule(pf);
3038                 }
3039                 ena_mask &= ~icr0_remaining;
3040         }
3041         ret = IRQ_HANDLED;
3042
3043 enable_intr:
3044         /* re-enable interrupt causes */
3045         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3046         if (!test_bit(__I40E_DOWN, &pf->state)) {
3047                 i40e_service_event_schedule(pf);
3048                 i40e_irq_dynamic_enable_icr0(pf);
3049         }
3050
3051         return ret;
3052 }
3053
3054 /**
3055  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3056  * @tx_ring:  tx ring to clean
3057  * @budget:   how many cleans we're allowed
3058  *
3059  * Returns true if there's any budget left (e.g. the clean is finished)
3060  **/
3061 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3062 {
3063         struct i40e_vsi *vsi = tx_ring->vsi;
3064         u16 i = tx_ring->next_to_clean;
3065         struct i40e_tx_buffer *tx_buf;
3066         struct i40e_tx_desc *tx_desc;
3067
3068         tx_buf = &tx_ring->tx_bi[i];
3069         tx_desc = I40E_TX_DESC(tx_ring, i);
3070         i -= tx_ring->count;
3071
3072         do {
3073                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3074
3075                 /* if next_to_watch is not set then there is no work pending */
3076                 if (!eop_desc)
3077                         break;
3078
3079                 /* prevent any other reads prior to eop_desc */
3080                 read_barrier_depends();
3081
3082                 /* if the descriptor isn't done, no work yet to do */
3083                 if (!(eop_desc->cmd_type_offset_bsz &
3084                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3085                         break;
3086
3087                 /* clear next_to_watch to prevent false hangs */
3088                 tx_buf->next_to_watch = NULL;
3089
3090                 /* unmap skb header data */
3091                 dma_unmap_single(tx_ring->dev,
3092                                  dma_unmap_addr(tx_buf, dma),
3093                                  dma_unmap_len(tx_buf, len),
3094                                  DMA_TO_DEVICE);
3095
3096                 dma_unmap_len_set(tx_buf, len, 0);
3097
3098
3099                 /* move to the next desc and buffer to clean */
3100                 tx_buf++;
3101                 tx_desc++;
3102                 i++;
3103                 if (unlikely(!i)) {
3104                         i -= tx_ring->count;
3105                         tx_buf = tx_ring->tx_bi;
3106                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3107                 }
3108
3109                 /* update budget accounting */
3110                 budget--;
3111         } while (likely(budget));
3112
3113         i += tx_ring->count;
3114         tx_ring->next_to_clean = i;
3115
3116         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3117                 i40e_irq_dynamic_enable(vsi,
3118                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3119         }
3120         return budget > 0;
3121 }
3122
3123 /**
3124  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3125  * @irq: interrupt number
3126  * @data: pointer to a q_vector
3127  **/
3128 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3129 {
3130         struct i40e_q_vector *q_vector = data;
3131         struct i40e_vsi *vsi;
3132
3133         if (!q_vector->tx.ring)
3134                 return IRQ_HANDLED;
3135
3136         vsi = q_vector->tx.ring->vsi;
3137         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3138
3139         return IRQ_HANDLED;
3140 }
3141
3142 /**
3143  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3144  * @vsi: the VSI being configured
3145  * @v_idx: vector index
3146  * @qp_idx: queue pair index
3147  **/
3148 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3149 {
3150         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3151         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3152         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3153
3154         tx_ring->q_vector = q_vector;
3155         tx_ring->next = q_vector->tx.ring;
3156         q_vector->tx.ring = tx_ring;
3157         q_vector->tx.count++;
3158
3159         rx_ring->q_vector = q_vector;
3160         rx_ring->next = q_vector->rx.ring;
3161         q_vector->rx.ring = rx_ring;
3162         q_vector->rx.count++;
3163 }
3164
3165 /**
3166  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3167  * @vsi: the VSI being configured
3168  *
3169  * This function maps descriptor rings to the queue-specific vectors
3170  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3171  * one vector per queue pair, but on a constrained vector budget, we
3172  * group the queue pairs as "efficiently" as possible.
3173  **/
3174 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3175 {
3176         int qp_remaining = vsi->num_queue_pairs;
3177         int q_vectors = vsi->num_q_vectors;
3178         int num_ringpairs;
3179         int v_start = 0;
3180         int qp_idx = 0;
3181
3182         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3183          * group them so there are multiple queues per vector.
3184          * It is also important to go through all the vectors available to be
3185          * sure that if we don't use all the vectors, that the remaining vectors
3186          * are cleared. This is especially important when decreasing the
3187          * number of queues in use.
3188          */
3189         for (; v_start < q_vectors; v_start++) {
3190                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3191
3192                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3193
3194                 q_vector->num_ringpairs = num_ringpairs;
3195
3196                 q_vector->rx.count = 0;
3197                 q_vector->tx.count = 0;
3198                 q_vector->rx.ring = NULL;
3199                 q_vector->tx.ring = NULL;
3200
3201                 while (num_ringpairs--) {
3202                         map_vector_to_qp(vsi, v_start, qp_idx);
3203                         qp_idx++;
3204                         qp_remaining--;
3205                 }
3206         }
3207 }
3208
3209 /**
3210  * i40e_vsi_request_irq - Request IRQ from the OS
3211  * @vsi: the VSI being configured
3212  * @basename: name for the vector
3213  **/
3214 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3215 {
3216         struct i40e_pf *pf = vsi->back;
3217         int err;
3218
3219         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3220                 err = i40e_vsi_request_irq_msix(vsi, basename);
3221         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3222                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3223                                   pf->misc_int_name, pf);
3224         else
3225                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3226                                   pf->misc_int_name, pf);
3227
3228         if (err)
3229                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3230
3231         return err;
3232 }
3233
3234 #ifdef CONFIG_NET_POLL_CONTROLLER
3235 /**
3236  * i40e_netpoll - A Polling 'interrupt'handler
3237  * @netdev: network interface device structure
3238  *
3239  * This is used by netconsole to send skbs without having to re-enable
3240  * interrupts.  It's not called while the normal interrupt routine is executing.
3241  **/
3242 static void i40e_netpoll(struct net_device *netdev)
3243 {
3244         struct i40e_netdev_priv *np = netdev_priv(netdev);
3245         struct i40e_vsi *vsi = np->vsi;
3246         struct i40e_pf *pf = vsi->back;
3247         int i;
3248
3249         /* if interface is down do nothing */
3250         if (test_bit(__I40E_DOWN, &vsi->state))
3251                 return;
3252
3253         pf->flags |= I40E_FLAG_IN_NETPOLL;
3254         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3255                 for (i = 0; i < vsi->num_q_vectors; i++)
3256                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3257         } else {
3258                 i40e_intr(pf->pdev->irq, netdev);
3259         }
3260         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3261 }
3262 #endif
3263
3264 /**
3265  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3266  * @pf: the PF being configured
3267  * @pf_q: the PF queue
3268  * @enable: enable or disable state of the queue
3269  *
3270  * This routine will wait for the given Tx queue of the PF to reach the
3271  * enabled or disabled state.
3272  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3273  * multiple retries; else will return 0 in case of success.
3274  **/
3275 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3276 {
3277         int i;
3278         u32 tx_reg;
3279
3280         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3281                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3282                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3283                         break;
3284
3285                 udelay(10);
3286         }
3287         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3288                 return -ETIMEDOUT;
3289
3290         return 0;
3291 }
3292
3293 /**
3294  * i40e_vsi_control_tx - Start or stop a VSI's rings
3295  * @vsi: the VSI being configured
3296  * @enable: start or stop the rings
3297  **/
3298 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3299 {
3300         struct i40e_pf *pf = vsi->back;
3301         struct i40e_hw *hw = &pf->hw;
3302         int i, j, pf_q, ret = 0;
3303         u32 tx_reg;
3304
3305         pf_q = vsi->base_queue;
3306         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3307
3308                 /* warn the TX unit of coming changes */
3309                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3310                 if (!enable)
3311                         udelay(10);
3312
3313                 for (j = 0; j < 50; j++) {
3314                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3315                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3316                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3317                                 break;
3318                         usleep_range(1000, 2000);
3319                 }
3320                 /* Skip if the queue is already in the requested state */
3321                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3322                         continue;
3323
3324                 /* turn on/off the queue */
3325                 if (enable) {
3326                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3327                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3328                 } else {
3329                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3330                 }
3331
3332                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3333
3334                 /* wait for the change to finish */
3335                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3336                 if (ret) {
3337                         dev_info(&pf->pdev->dev,
3338                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3339                                  __func__, vsi->seid, pf_q,
3340                                  (enable ? "en" : "dis"));
3341                         break;
3342                 }
3343         }
3344
3345         if (hw->revision_id == 0)
3346                 mdelay(50);
3347         return ret;
3348 }
3349
3350 /**
3351  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3352  * @pf: the PF being configured
3353  * @pf_q: the PF queue
3354  * @enable: enable or disable state of the queue
3355  *
3356  * This routine will wait for the given Rx queue of the PF to reach the
3357  * enabled or disabled state.
3358  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3359  * multiple retries; else will return 0 in case of success.
3360  **/
3361 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3362 {
3363         int i;
3364         u32 rx_reg;
3365
3366         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3367                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3368                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3369                         break;
3370
3371                 udelay(10);
3372         }
3373         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3374                 return -ETIMEDOUT;
3375
3376         return 0;
3377 }
3378
3379 /**
3380  * i40e_vsi_control_rx - Start or stop a VSI's rings
3381  * @vsi: the VSI being configured
3382  * @enable: start or stop the rings
3383  **/
3384 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3385 {
3386         struct i40e_pf *pf = vsi->back;
3387         struct i40e_hw *hw = &pf->hw;
3388         int i, j, pf_q, ret = 0;
3389         u32 rx_reg;
3390
3391         pf_q = vsi->base_queue;
3392         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3393                 for (j = 0; j < 50; j++) {
3394                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3395                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3396                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3397                                 break;
3398                         usleep_range(1000, 2000);
3399                 }
3400
3401                 /* Skip if the queue is already in the requested state */
3402                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3403                         continue;
3404
3405                 /* turn on/off the queue */
3406                 if (enable)
3407                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3408                 else
3409                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3410                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3411
3412                 /* wait for the change to finish */
3413                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3414                 if (ret) {
3415                         dev_info(&pf->pdev->dev,
3416                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3417                                  __func__, vsi->seid, pf_q,
3418                                  (enable ? "en" : "dis"));
3419                         break;
3420                 }
3421         }
3422
3423         return ret;
3424 }
3425
3426 /**
3427  * i40e_vsi_control_rings - Start or stop a VSI's rings
3428  * @vsi: the VSI being configured
3429  * @enable: start or stop the rings
3430  **/
3431 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3432 {
3433         int ret = 0;
3434
3435         /* do rx first for enable and last for disable */
3436         if (request) {
3437                 ret = i40e_vsi_control_rx(vsi, request);
3438                 if (ret)
3439                         return ret;
3440                 ret = i40e_vsi_control_tx(vsi, request);
3441         } else {
3442                 /* Ignore return value, we need to shutdown whatever we can */
3443                 i40e_vsi_control_tx(vsi, request);
3444                 i40e_vsi_control_rx(vsi, request);
3445         }
3446
3447         return ret;
3448 }
3449
3450 /**
3451  * i40e_vsi_free_irq - Free the irq association with the OS
3452  * @vsi: the VSI being configured
3453  **/
3454 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3455 {
3456         struct i40e_pf *pf = vsi->back;
3457         struct i40e_hw *hw = &pf->hw;
3458         int base = vsi->base_vector;
3459         u32 val, qp;
3460         int i;
3461
3462         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3463                 if (!vsi->q_vectors)
3464                         return;
3465
3466                 if (!vsi->irqs_ready)
3467                         return;
3468
3469                 vsi->irqs_ready = false;
3470                 for (i = 0; i < vsi->num_q_vectors; i++) {
3471                         u16 vector = i + base;
3472
3473                         /* free only the irqs that were actually requested */
3474                         if (!vsi->q_vectors[i] ||
3475                             !vsi->q_vectors[i]->num_ringpairs)
3476                                 continue;
3477
3478                         /* clear the affinity_mask in the IRQ descriptor */
3479                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3480                                               NULL);
3481                         free_irq(pf->msix_entries[vector].vector,
3482                                  vsi->q_vectors[i]);
3483
3484                         /* Tear down the interrupt queue link list
3485                          *
3486                          * We know that they come in pairs and always
3487                          * the Rx first, then the Tx.  To clear the
3488                          * link list, stick the EOL value into the
3489                          * next_q field of the registers.
3490                          */
3491                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3492                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3493                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3494                         val |= I40E_QUEUE_END_OF_LIST
3495                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3496                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3497
3498                         while (qp != I40E_QUEUE_END_OF_LIST) {
3499                                 u32 next;
3500
3501                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3502
3503                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3504                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3505                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3506                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3507
3508                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3509                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3510
3511                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3512
3513                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3514
3515                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3516                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3517
3518                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3519                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3520                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3521                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3522
3523                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3524                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3525
3526                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3527                                 qp = next;
3528                         }
3529                 }
3530         } else {
3531                 free_irq(pf->pdev->irq, pf);
3532
3533                 val = rd32(hw, I40E_PFINT_LNKLST0);
3534                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3535                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3536                 val |= I40E_QUEUE_END_OF_LIST
3537                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3538                 wr32(hw, I40E_PFINT_LNKLST0, val);
3539
3540                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3541                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3542                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3543                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3544                          I40E_QINT_RQCTL_INTEVENT_MASK);
3545
3546                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3547                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3548
3549                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3550
3551                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3552
3553                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3554                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3555                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3556                          I40E_QINT_TQCTL_INTEVENT_MASK);
3557
3558                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3559                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3560
3561                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3562         }
3563 }
3564
3565 /**
3566  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3567  * @vsi: the VSI being configured
3568  * @v_idx: Index of vector to be freed
3569  *
3570  * This function frees the memory allocated to the q_vector.  In addition if
3571  * NAPI is enabled it will delete any references to the NAPI struct prior
3572  * to freeing the q_vector.
3573  **/
3574 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3575 {
3576         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3577         struct i40e_ring *ring;
3578
3579         if (!q_vector)
3580                 return;
3581
3582         /* disassociate q_vector from rings */
3583         i40e_for_each_ring(ring, q_vector->tx)
3584                 ring->q_vector = NULL;
3585
3586         i40e_for_each_ring(ring, q_vector->rx)
3587                 ring->q_vector = NULL;
3588
3589         /* only VSI w/ an associated netdev is set up w/ NAPI */
3590         if (vsi->netdev)
3591                 netif_napi_del(&q_vector->napi);
3592
3593         vsi->q_vectors[v_idx] = NULL;
3594
3595         kfree_rcu(q_vector, rcu);
3596 }
3597
3598 /**
3599  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3600  * @vsi: the VSI being un-configured
3601  *
3602  * This frees the memory allocated to the q_vectors and
3603  * deletes references to the NAPI struct.
3604  **/
3605 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3606 {
3607         int v_idx;
3608
3609         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3610                 i40e_free_q_vector(vsi, v_idx);
3611 }
3612
3613 /**
3614  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3615  * @pf: board private structure
3616  **/
3617 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3618 {
3619         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3620         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3621                 pci_disable_msix(pf->pdev);
3622                 kfree(pf->msix_entries);
3623                 pf->msix_entries = NULL;
3624         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3625                 pci_disable_msi(pf->pdev);
3626         }
3627         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3628 }
3629
3630 /**
3631  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3632  * @pf: board private structure
3633  *
3634  * We go through and clear interrupt specific resources and reset the structure
3635  * to pre-load conditions
3636  **/
3637 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3638 {
3639         int i;
3640
3641         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3642         for (i = 0; i < pf->num_alloc_vsi; i++)
3643                 if (pf->vsi[i])
3644                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3645         i40e_reset_interrupt_capability(pf);
3646 }
3647
3648 /**
3649  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3650  * @vsi: the VSI being configured
3651  **/
3652 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3653 {
3654         int q_idx;
3655
3656         if (!vsi->netdev)
3657                 return;
3658
3659         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3660                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3661 }
3662
3663 /**
3664  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3665  * @vsi: the VSI being configured
3666  **/
3667 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3668 {
3669         int q_idx;
3670
3671         if (!vsi->netdev)
3672                 return;
3673
3674         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3675                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3676 }
3677
3678 /**
3679  * i40e_vsi_close - Shut down a VSI
3680  * @vsi: the vsi to be quelled
3681  **/
3682 static void i40e_vsi_close(struct i40e_vsi *vsi)
3683 {
3684         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3685                 i40e_down(vsi);
3686         i40e_vsi_free_irq(vsi);
3687         i40e_vsi_free_tx_resources(vsi);
3688         i40e_vsi_free_rx_resources(vsi);
3689 }
3690
3691 /**
3692  * i40e_quiesce_vsi - Pause a given VSI
3693  * @vsi: the VSI being paused
3694  **/
3695 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3696 {
3697         if (test_bit(__I40E_DOWN, &vsi->state))
3698                 return;
3699
3700         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3701         if (vsi->netdev && netif_running(vsi->netdev)) {
3702                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3703         } else {
3704                 i40e_vsi_close(vsi);
3705         }
3706 }
3707
3708 /**
3709  * i40e_unquiesce_vsi - Resume a given VSI
3710  * @vsi: the VSI being resumed
3711  **/
3712 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3713 {
3714         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3715                 return;
3716
3717         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3718         if (vsi->netdev && netif_running(vsi->netdev))
3719                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3720         else
3721                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
3722 }
3723
3724 /**
3725  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3726  * @pf: the PF
3727  **/
3728 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3729 {
3730         int v;
3731
3732         for (v = 0; v < pf->num_alloc_vsi; v++) {
3733                 if (pf->vsi[v])
3734                         i40e_quiesce_vsi(pf->vsi[v]);
3735         }
3736 }
3737
3738 /**
3739  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3740  * @pf: the PF
3741  **/
3742 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3743 {
3744         int v;
3745
3746         for (v = 0; v < pf->num_alloc_vsi; v++) {
3747                 if (pf->vsi[v])
3748                         i40e_unquiesce_vsi(pf->vsi[v]);
3749         }
3750 }
3751
3752 /**
3753  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
3754  * @dcbcfg: the corresponding DCBx configuration structure
3755  *
3756  * Return the number of TCs from given DCBx configuration
3757  **/
3758 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
3759 {
3760         u8 num_tc = 0;
3761         int i;
3762
3763         /* Scan the ETS Config Priority Table to find
3764          * traffic class enabled for a given priority
3765          * and use the traffic class index to get the
3766          * number of traffic classes enabled
3767          */
3768         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3769                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
3770                         num_tc = dcbcfg->etscfg.prioritytable[i];
3771         }
3772
3773         /* Traffic class index starts from zero so
3774          * increment to return the actual count
3775          */
3776         return num_tc + 1;
3777 }
3778
3779 /**
3780  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
3781  * @dcbcfg: the corresponding DCBx configuration structure
3782  *
3783  * Query the current DCB configuration and return the number of
3784  * traffic classes enabled from the given DCBX config
3785  **/
3786 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
3787 {
3788         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
3789         u8 enabled_tc = 1;
3790         u8 i;
3791
3792         for (i = 0; i < num_tc; i++)
3793                 enabled_tc |= 1 << i;
3794
3795         return enabled_tc;
3796 }
3797
3798 /**
3799  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
3800  * @pf: PF being queried
3801  *
3802  * Return number of traffic classes enabled for the given PF
3803  **/
3804 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
3805 {
3806         struct i40e_hw *hw = &pf->hw;
3807         u8 i, enabled_tc;
3808         u8 num_tc = 0;
3809         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3810
3811         /* If DCB is not enabled then always in single TC */
3812         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3813                 return 1;
3814
3815         /* MFP mode return count of enabled TCs for this PF */
3816         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3817                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3818                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3819                         if (enabled_tc & (1 << i))
3820                                 num_tc++;
3821                 }
3822                 return num_tc;
3823         }
3824
3825         /* SFP mode will be enabled for all TCs on port */
3826         return i40e_dcb_get_num_tc(dcbcfg);
3827 }
3828
3829 /**
3830  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
3831  * @pf: PF being queried
3832  *
3833  * Return a bitmap for first enabled traffic class for this PF.
3834  **/
3835 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
3836 {
3837         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3838         u8 i = 0;
3839
3840         if (!enabled_tc)
3841                 return 0x1; /* TC0 */
3842
3843         /* Find the first enabled TC */
3844         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3845                 if (enabled_tc & (1 << i))
3846                         break;
3847         }
3848
3849         return 1 << i;
3850 }
3851
3852 /**
3853  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
3854  * @pf: PF being queried
3855  *
3856  * Return a bitmap for enabled traffic classes for this PF.
3857  **/
3858 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
3859 {
3860         /* If DCB is not enabled for this PF then just return default TC */
3861         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3862                 return i40e_pf_get_default_tc(pf);
3863
3864         /* MFP mode will have enabled TCs set by FW */
3865         if (pf->flags & I40E_FLAG_MFP_ENABLED)
3866                 return pf->hw.func_caps.enabled_tcmap;
3867
3868         /* SFP mode we want PF to be enabled for all TCs */
3869         return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
3870 }
3871
3872 /**
3873  * i40e_vsi_get_bw_info - Query VSI BW Information
3874  * @vsi: the VSI being queried
3875  *
3876  * Returns 0 on success, negative value on failure
3877  **/
3878 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
3879 {
3880         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
3881         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
3882         struct i40e_pf *pf = vsi->back;
3883         struct i40e_hw *hw = &pf->hw;
3884         i40e_status aq_ret;
3885         u32 tc_bw_max;
3886         int i;
3887
3888         /* Get the VSI level BW configuration */
3889         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
3890         if (aq_ret) {
3891                 dev_info(&pf->pdev->dev,
3892                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
3893                          aq_ret, pf->hw.aq.asq_last_status);
3894                 return -EINVAL;
3895         }
3896
3897         /* Get the VSI level BW configuration per TC */
3898         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
3899                                                   NULL);
3900         if (aq_ret) {
3901                 dev_info(&pf->pdev->dev,
3902                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
3903                          aq_ret, pf->hw.aq.asq_last_status);
3904                 return -EINVAL;
3905         }
3906
3907         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
3908                 dev_info(&pf->pdev->dev,
3909                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
3910                          bw_config.tc_valid_bits,
3911                          bw_ets_config.tc_valid_bits);
3912                 /* Still continuing */
3913         }
3914
3915         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
3916         vsi->bw_max_quanta = bw_config.max_bw;
3917         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
3918                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
3919         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3920                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
3921                 vsi->bw_ets_limit_credits[i] =
3922                                         le16_to_cpu(bw_ets_config.credits[i]);
3923                 /* 3 bits out of 4 for each TC */
3924                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
3925         }
3926
3927         return 0;
3928 }
3929
3930 /**
3931  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
3932  * @vsi: the VSI being configured
3933  * @enabled_tc: TC bitmap
3934  * @bw_credits: BW shared credits per TC
3935  *
3936  * Returns 0 on success, negative value on failure
3937  **/
3938 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
3939                                        u8 *bw_share)
3940 {
3941         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
3942         i40e_status aq_ret;
3943         int i;
3944
3945         bw_data.tc_valid_bits = enabled_tc;
3946         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3947                 bw_data.tc_bw_credits[i] = bw_share[i];
3948
3949         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
3950                                           NULL);
3951         if (aq_ret) {
3952                 dev_info(&vsi->back->pdev->dev,
3953                          "AQ command Config VSI BW allocation per TC failed = %d\n",
3954                          vsi->back->hw.aq.asq_last_status);
3955                 return -EINVAL;
3956         }
3957
3958         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
3959                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
3960
3961         return 0;
3962 }
3963
3964 /**
3965  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
3966  * @vsi: the VSI being configured
3967  * @enabled_tc: TC map to be enabled
3968  *
3969  **/
3970 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
3971 {
3972         struct net_device *netdev = vsi->netdev;
3973         struct i40e_pf *pf = vsi->back;
3974         struct i40e_hw *hw = &pf->hw;
3975         u8 netdev_tc = 0;
3976         int i;
3977         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3978
3979         if (!netdev)
3980                 return;
3981
3982         if (!enabled_tc) {
3983                 netdev_reset_tc(netdev);
3984                 return;
3985         }
3986
3987         /* Set up actual enabled TCs on the VSI */
3988         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
3989                 return;
3990
3991         /* set per TC queues for the VSI */
3992         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3993                 /* Only set TC queues for enabled tcs
3994                  *
3995                  * e.g. For a VSI that has TC0 and TC3 enabled the
3996                  * enabled_tc bitmap would be 0x00001001; the driver
3997                  * will set the numtc for netdev as 2 that will be
3998                  * referenced by the netdev layer as TC 0 and 1.
3999                  */
4000                 if (vsi->tc_config.enabled_tc & (1 << i))
4001                         netdev_set_tc_queue(netdev,
4002                                         vsi->tc_config.tc_info[i].netdev_tc,
4003                                         vsi->tc_config.tc_info[i].qcount,
4004                                         vsi->tc_config.tc_info[i].qoffset);
4005         }
4006
4007         /* Assign UP2TC map for the VSI */
4008         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4009                 /* Get the actual TC# for the UP */
4010                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4011                 /* Get the mapped netdev TC# for the UP */
4012                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4013                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4014         }
4015 }
4016
4017 /**
4018  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4019  * @vsi: the VSI being configured
4020  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4021  **/
4022 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4023                                       struct i40e_vsi_context *ctxt)
4024 {
4025         /* copy just the sections touched not the entire info
4026          * since not all sections are valid as returned by
4027          * update vsi params
4028          */
4029         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4030         memcpy(&vsi->info.queue_mapping,
4031                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4032         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4033                sizeof(vsi->info.tc_mapping));
4034 }
4035
4036 /**
4037  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4038  * @vsi: VSI to be configured
4039  * @enabled_tc: TC bitmap
4040  *
4041  * This configures a particular VSI for TCs that are mapped to the
4042  * given TC bitmap. It uses default bandwidth share for TCs across
4043  * VSIs to configure TC for a particular VSI.
4044  *
4045  * NOTE:
4046  * It is expected that the VSI queues have been quisced before calling
4047  * this function.
4048  **/
4049 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4050 {
4051         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4052         struct i40e_vsi_context ctxt;
4053         int ret = 0;
4054         int i;
4055
4056         /* Check if enabled_tc is same as existing or new TCs */
4057         if (vsi->tc_config.enabled_tc == enabled_tc)
4058                 return ret;
4059
4060         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4061         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4062                 if (enabled_tc & (1 << i))
4063                         bw_share[i] = 1;
4064         }
4065
4066         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4067         if (ret) {
4068                 dev_info(&vsi->back->pdev->dev,
4069                          "Failed configuring TC map %d for VSI %d\n",
4070                          enabled_tc, vsi->seid);
4071                 goto out;
4072         }
4073
4074         /* Update Queue Pairs Mapping for currently enabled UPs */
4075         ctxt.seid = vsi->seid;
4076         ctxt.pf_num = vsi->back->hw.pf_id;
4077         ctxt.vf_num = 0;
4078         ctxt.uplink_seid = vsi->uplink_seid;
4079         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
4080         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4081
4082         /* Update the VSI after updating the VSI queue-mapping information */
4083         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4084         if (ret) {
4085                 dev_info(&vsi->back->pdev->dev,
4086                          "update vsi failed, aq_err=%d\n",
4087                          vsi->back->hw.aq.asq_last_status);
4088                 goto out;
4089         }
4090         /* update the local VSI info with updated queue map */
4091         i40e_vsi_update_queue_map(vsi, &ctxt);
4092         vsi->info.valid_sections = 0;
4093
4094         /* Update current VSI BW information */
4095         ret = i40e_vsi_get_bw_info(vsi);
4096         if (ret) {
4097                 dev_info(&vsi->back->pdev->dev,
4098                          "Failed updating vsi bw info, aq_err=%d\n",
4099                          vsi->back->hw.aq.asq_last_status);
4100                 goto out;
4101         }
4102
4103         /* Update the netdev TC setup */
4104         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4105 out:
4106         return ret;
4107 }
4108
4109 /**
4110  * i40e_veb_config_tc - Configure TCs for given VEB
4111  * @veb: given VEB
4112  * @enabled_tc: TC bitmap
4113  *
4114  * Configures given TC bitmap for VEB (switching) element
4115  **/
4116 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4117 {
4118         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4119         struct i40e_pf *pf = veb->pf;
4120         int ret = 0;
4121         int i;
4122
4123         /* No TCs or already enabled TCs just return */
4124         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4125                 return ret;
4126
4127         bw_data.tc_valid_bits = enabled_tc;
4128         /* bw_data.absolute_credits is not set (relative) */
4129
4130         /* Enable ETS TCs with equal BW Share for now */
4131         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4132                 if (enabled_tc & (1 << i))
4133                         bw_data.tc_bw_share_credits[i] = 1;
4134         }
4135
4136         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4137                                                    &bw_data, NULL);
4138         if (ret) {
4139                 dev_info(&pf->pdev->dev,
4140                          "veb bw config failed, aq_err=%d\n",
4141                          pf->hw.aq.asq_last_status);
4142                 goto out;
4143         }
4144
4145         /* Update the BW information */
4146         ret = i40e_veb_get_bw_info(veb);
4147         if (ret) {
4148                 dev_info(&pf->pdev->dev,
4149                          "Failed getting veb bw config, aq_err=%d\n",
4150                          pf->hw.aq.asq_last_status);
4151         }
4152
4153 out:
4154         return ret;
4155 }
4156
4157 #ifdef CONFIG_I40E_DCB
4158 /**
4159  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4160  * @pf: PF struct
4161  *
4162  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4163  * the caller would've quiesce all the VSIs before calling
4164  * this function
4165  **/
4166 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4167 {
4168         u8 tc_map = 0;
4169         int ret;
4170         u8 v;
4171
4172         /* Enable the TCs available on PF to all VEBs */
4173         tc_map = i40e_pf_get_tc_map(pf);
4174         for (v = 0; v < I40E_MAX_VEB; v++) {
4175                 if (!pf->veb[v])
4176                         continue;
4177                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4178                 if (ret) {
4179                         dev_info(&pf->pdev->dev,
4180                                  "Failed configuring TC for VEB seid=%d\n",
4181                                  pf->veb[v]->seid);
4182                         /* Will try to configure as many components */
4183                 }
4184         }
4185
4186         /* Update each VSI */
4187         for (v = 0; v < pf->num_alloc_vsi; v++) {
4188                 if (!pf->vsi[v])
4189                         continue;
4190
4191                 /* - Enable all TCs for the LAN VSI
4192                  * - For all others keep them at TC0 for now
4193                  */
4194                 if (v == pf->lan_vsi)
4195                         tc_map = i40e_pf_get_tc_map(pf);
4196                 else
4197                         tc_map = i40e_pf_get_default_tc(pf);
4198
4199                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4200                 if (ret) {
4201                         dev_info(&pf->pdev->dev,
4202                                  "Failed configuring TC for VSI seid=%d\n",
4203                                  pf->vsi[v]->seid);
4204                         /* Will try to configure as many components */
4205                 } else {
4206                         /* Re-configure VSI vectors based on updated TC map */
4207                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4208                         if (pf->vsi[v]->netdev)
4209                                 i40e_dcbnl_set_all(pf->vsi[v]);
4210                 }
4211         }
4212 }
4213
4214 /**
4215  * i40e_init_pf_dcb - Initialize DCB configuration
4216  * @pf: PF being configured
4217  *
4218  * Query the current DCB configuration and cache it
4219  * in the hardware structure
4220  **/
4221 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4222 {
4223         struct i40e_hw *hw = &pf->hw;
4224         int err = 0;
4225
4226         if (pf->hw.func_caps.npar_enable)
4227                 goto out;
4228
4229         /* Get the initial DCB configuration */
4230         err = i40e_init_dcb(hw);
4231         if (!err) {
4232                 /* Device/Function is not DCBX capable */
4233                 if ((!hw->func_caps.dcb) ||
4234                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4235                         dev_info(&pf->pdev->dev,
4236                                  "DCBX offload is not supported or is disabled for this PF.\n");
4237
4238                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4239                                 goto out;
4240
4241                 } else {
4242                         /* When status is not DISABLED then DCBX in FW */
4243                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4244                                        DCB_CAP_DCBX_VER_IEEE;
4245
4246                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4247                         /* Enable DCB tagging only when more than one TC */
4248                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4249                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4250                 }
4251         } else {
4252                 dev_info(&pf->pdev->dev, "AQ Querying DCB configuration failed: %d\n",
4253                          pf->hw.aq.asq_last_status);
4254         }
4255
4256 out:
4257         return err;
4258 }
4259 #endif /* CONFIG_I40E_DCB */
4260 #define SPEED_SIZE 14
4261 #define FC_SIZE 8
4262 /**
4263  * i40e_print_link_message - print link up or down
4264  * @vsi: the VSI for which link needs a message
4265  */
4266 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4267 {
4268         char speed[SPEED_SIZE] = "Unknown";
4269         char fc[FC_SIZE] = "RX/TX";
4270
4271         if (!isup) {
4272                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4273                 return;
4274         }
4275
4276         switch (vsi->back->hw.phy.link_info.link_speed) {
4277         case I40E_LINK_SPEED_40GB:
4278                 strncpy(speed, "40 Gbps", SPEED_SIZE);
4279                 break;
4280         case I40E_LINK_SPEED_10GB:
4281                 strncpy(speed, "10 Gbps", SPEED_SIZE);
4282                 break;
4283         case I40E_LINK_SPEED_1GB:
4284                 strncpy(speed, "1000 Mbps", SPEED_SIZE);
4285                 break;
4286         default:
4287                 break;
4288         }
4289
4290         switch (vsi->back->hw.fc.current_mode) {
4291         case I40E_FC_FULL:
4292                 strncpy(fc, "RX/TX", FC_SIZE);
4293                 break;
4294         case I40E_FC_TX_PAUSE:
4295                 strncpy(fc, "TX", FC_SIZE);
4296                 break;
4297         case I40E_FC_RX_PAUSE:
4298                 strncpy(fc, "RX", FC_SIZE);
4299                 break;
4300         default:
4301                 strncpy(fc, "None", FC_SIZE);
4302                 break;
4303         }
4304
4305         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4306                     speed, fc);
4307 }
4308
4309 /**
4310  * i40e_up_complete - Finish the last steps of bringing up a connection
4311  * @vsi: the VSI being configured
4312  **/
4313 static int i40e_up_complete(struct i40e_vsi *vsi)
4314 {
4315         struct i40e_pf *pf = vsi->back;
4316         int err;
4317
4318         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4319                 i40e_vsi_configure_msix(vsi);
4320         else
4321                 i40e_configure_msi_and_legacy(vsi);
4322
4323         /* start rings */
4324         err = i40e_vsi_control_rings(vsi, true);
4325         if (err)
4326                 return err;
4327
4328         clear_bit(__I40E_DOWN, &vsi->state);
4329         i40e_napi_enable_all(vsi);
4330         i40e_vsi_enable_irq(vsi);
4331
4332         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4333             (vsi->netdev)) {
4334                 i40e_print_link_message(vsi, true);
4335                 netif_tx_start_all_queues(vsi->netdev);
4336                 netif_carrier_on(vsi->netdev);
4337         } else if (vsi->netdev) {
4338                 i40e_print_link_message(vsi, false);
4339         }
4340
4341         /* replay FDIR SB filters */
4342         if (vsi->type == I40E_VSI_FDIR)
4343                 i40e_fdir_filter_restore(vsi);
4344         i40e_service_event_schedule(pf);
4345
4346         return 0;
4347 }
4348
4349 /**
4350  * i40e_vsi_reinit_locked - Reset the VSI
4351  * @vsi: the VSI being configured
4352  *
4353  * Rebuild the ring structs after some configuration
4354  * has changed, e.g. MTU size.
4355  **/
4356 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4357 {
4358         struct i40e_pf *pf = vsi->back;
4359
4360         WARN_ON(in_interrupt());
4361         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4362                 usleep_range(1000, 2000);
4363         i40e_down(vsi);
4364
4365         /* Give a VF some time to respond to the reset.  The
4366          * two second wait is based upon the watchdog cycle in
4367          * the VF driver.
4368          */
4369         if (vsi->type == I40E_VSI_SRIOV)
4370                 msleep(2000);
4371         i40e_up(vsi);
4372         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4373 }
4374
4375 /**
4376  * i40e_up - Bring the connection back up after being down
4377  * @vsi: the VSI being configured
4378  **/
4379 int i40e_up(struct i40e_vsi *vsi)
4380 {
4381         int err;
4382
4383         err = i40e_vsi_configure(vsi);
4384         if (!err)
4385                 err = i40e_up_complete(vsi);
4386
4387         return err;
4388 }
4389
4390 /**
4391  * i40e_down - Shutdown the connection processing
4392  * @vsi: the VSI being stopped
4393  **/
4394 void i40e_down(struct i40e_vsi *vsi)
4395 {
4396         int i;
4397
4398         /* It is assumed that the caller of this function
4399          * sets the vsi->state __I40E_DOWN bit.
4400          */
4401         if (vsi->netdev) {
4402                 netif_carrier_off(vsi->netdev);
4403                 netif_tx_disable(vsi->netdev);
4404         }
4405         i40e_vsi_disable_irq(vsi);
4406         i40e_vsi_control_rings(vsi, false);
4407         i40e_napi_disable_all(vsi);
4408
4409         for (i = 0; i < vsi->num_queue_pairs; i++) {
4410                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4411                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4412         }
4413 }
4414
4415 /**
4416  * i40e_setup_tc - configure multiple traffic classes
4417  * @netdev: net device to configure
4418  * @tc: number of traffic classes to enable
4419  **/
4420 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4421 {
4422         struct i40e_netdev_priv *np = netdev_priv(netdev);
4423         struct i40e_vsi *vsi = np->vsi;
4424         struct i40e_pf *pf = vsi->back;
4425         u8 enabled_tc = 0;
4426         int ret = -EINVAL;
4427         int i;
4428
4429         /* Check if DCB enabled to continue */
4430         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4431                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4432                 goto exit;
4433         }
4434
4435         /* Check if MFP enabled */
4436         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4437                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4438                 goto exit;
4439         }
4440
4441         /* Check whether tc count is within enabled limit */
4442         if (tc > i40e_pf_get_num_tc(pf)) {
4443                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4444                 goto exit;
4445         }
4446
4447         /* Generate TC map for number of tc requested */
4448         for (i = 0; i < tc; i++)
4449                 enabled_tc |= (1 << i);
4450
4451         /* Requesting same TC configuration as already enabled */
4452         if (enabled_tc == vsi->tc_config.enabled_tc)
4453                 return 0;
4454
4455         /* Quiesce VSI queues */
4456         i40e_quiesce_vsi(vsi);
4457
4458         /* Configure VSI for enabled TCs */
4459         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4460         if (ret) {
4461                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4462                             vsi->seid);
4463                 goto exit;
4464         }
4465
4466         /* Unquiesce VSI */
4467         i40e_unquiesce_vsi(vsi);
4468
4469 exit:
4470         return ret;
4471 }
4472
4473 /**
4474  * i40e_open - Called when a network interface is made active
4475  * @netdev: network interface device structure
4476  *
4477  * The open entry point is called when a network interface is made
4478  * active by the system (IFF_UP).  At this point all resources needed
4479  * for transmit and receive operations are allocated, the interrupt
4480  * handler is registered with the OS, the netdev watchdog subtask is
4481  * enabled, and the stack is notified that the interface is ready.
4482  *
4483  * Returns 0 on success, negative value on failure
4484  **/
4485 static int i40e_open(struct net_device *netdev)
4486 {
4487         struct i40e_netdev_priv *np = netdev_priv(netdev);
4488         struct i40e_vsi *vsi = np->vsi;
4489         struct i40e_pf *pf = vsi->back;
4490         int err;
4491
4492         /* disallow open during test or if eeprom is broken */
4493         if (test_bit(__I40E_TESTING, &pf->state) ||
4494             test_bit(__I40E_BAD_EEPROM, &pf->state))
4495                 return -EBUSY;
4496
4497         netif_carrier_off(netdev);
4498
4499         err = i40e_vsi_open(vsi);
4500         if (err)
4501                 return err;
4502
4503         /* configure global TSO hardware offload settings */
4504         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4505                                                        TCP_FLAG_FIN) >> 16);
4506         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4507                                                        TCP_FLAG_FIN |
4508                                                        TCP_FLAG_CWR) >> 16);
4509         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4510
4511 #ifdef CONFIG_I40E_VXLAN
4512         vxlan_get_rx_port(netdev);
4513 #endif
4514
4515         return 0;
4516 }
4517
4518 /**
4519  * i40e_vsi_open -
4520  * @vsi: the VSI to open
4521  *
4522  * Finish initialization of the VSI.
4523  *
4524  * Returns 0 on success, negative value on failure
4525  **/
4526 int i40e_vsi_open(struct i40e_vsi *vsi)
4527 {
4528         struct i40e_pf *pf = vsi->back;
4529         char int_name[IFNAMSIZ];
4530         int err;
4531
4532         /* allocate descriptors */
4533         err = i40e_vsi_setup_tx_resources(vsi);
4534         if (err)
4535                 goto err_setup_tx;
4536         err = i40e_vsi_setup_rx_resources(vsi);
4537         if (err)
4538                 goto err_setup_rx;
4539
4540         err = i40e_vsi_configure(vsi);
4541         if (err)
4542                 goto err_setup_rx;
4543
4544         if (vsi->netdev) {
4545                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4546                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4547                 err = i40e_vsi_request_irq(vsi, int_name);
4548                 if (err)
4549                         goto err_setup_rx;
4550
4551                 /* Notify the stack of the actual queue counts. */
4552                 err = netif_set_real_num_tx_queues(vsi->netdev,
4553                                                    vsi->num_queue_pairs);
4554                 if (err)
4555                         goto err_set_queues;
4556
4557                 err = netif_set_real_num_rx_queues(vsi->netdev,
4558                                                    vsi->num_queue_pairs);
4559                 if (err)
4560                         goto err_set_queues;
4561
4562         } else if (vsi->type == I40E_VSI_FDIR) {
4563                 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
4564                          dev_driver_string(&pf->pdev->dev));
4565                 err = i40e_vsi_request_irq(vsi, int_name);
4566         } else {
4567                 err = -EINVAL;
4568                 goto err_setup_rx;
4569         }
4570
4571         err = i40e_up_complete(vsi);
4572         if (err)
4573                 goto err_up_complete;
4574
4575         return 0;
4576
4577 err_up_complete:
4578         i40e_down(vsi);
4579 err_set_queues:
4580         i40e_vsi_free_irq(vsi);
4581 err_setup_rx:
4582         i40e_vsi_free_rx_resources(vsi);
4583 err_setup_tx:
4584         i40e_vsi_free_tx_resources(vsi);
4585         if (vsi == pf->vsi[pf->lan_vsi])
4586                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4587
4588         return err;
4589 }
4590
4591 /**
4592  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4593  * @pf: Pointer to pf
4594  *
4595  * This function destroys the hlist where all the Flow Director
4596  * filters were saved.
4597  **/
4598 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4599 {
4600         struct i40e_fdir_filter *filter;
4601         struct hlist_node *node2;
4602
4603         hlist_for_each_entry_safe(filter, node2,
4604                                   &pf->fdir_filter_list, fdir_node) {
4605                 hlist_del(&filter->fdir_node);
4606                 kfree(filter);
4607         }
4608         pf->fdir_pf_active_filters = 0;
4609 }
4610
4611 /**
4612  * i40e_close - Disables a network interface
4613  * @netdev: network interface device structure
4614  *
4615  * The close entry point is called when an interface is de-activated
4616  * by the OS.  The hardware is still under the driver's control, but
4617  * this netdev interface is disabled.
4618  *
4619  * Returns 0, this is not allowed to fail
4620  **/
4621 static int i40e_close(struct net_device *netdev)
4622 {
4623         struct i40e_netdev_priv *np = netdev_priv(netdev);
4624         struct i40e_vsi *vsi = np->vsi;
4625
4626         i40e_vsi_close(vsi);
4627
4628         return 0;
4629 }
4630
4631 /**
4632  * i40e_do_reset - Start a PF or Core Reset sequence
4633  * @pf: board private structure
4634  * @reset_flags: which reset is requested
4635  *
4636  * The essential difference in resets is that the PF Reset
4637  * doesn't clear the packet buffers, doesn't reset the PE
4638  * firmware, and doesn't bother the other PFs on the chip.
4639  **/
4640 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
4641 {
4642         u32 val;
4643
4644         WARN_ON(in_interrupt());
4645
4646         if (i40e_check_asq_alive(&pf->hw))
4647                 i40e_vc_notify_reset(pf);
4648
4649         /* do the biggest reset indicated */
4650         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
4651
4652                 /* Request a Global Reset
4653                  *
4654                  * This will start the chip's countdown to the actual full
4655                  * chip reset event, and a warning interrupt to be sent
4656                  * to all PFs, including the requestor.  Our handler
4657                  * for the warning interrupt will deal with the shutdown
4658                  * and recovery of the switch setup.
4659                  */
4660                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
4661                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4662                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
4663                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4664
4665         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
4666
4667                 /* Request a Core Reset
4668                  *
4669                  * Same as Global Reset, except does *not* include the MAC/PHY
4670                  */
4671                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
4672                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4673                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
4674                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4675                 i40e_flush(&pf->hw);
4676
4677         } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
4678
4679                 /* Request a Firmware Reset
4680                  *
4681                  * Same as Global reset, plus restarting the
4682                  * embedded firmware engine.
4683                  */
4684                 /* enable EMP Reset */
4685                 val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
4686                 val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
4687                 wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
4688
4689                 /* force the reset */
4690                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4691                 val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
4692                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4693                 i40e_flush(&pf->hw);
4694
4695         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
4696
4697                 /* Request a PF Reset
4698                  *
4699                  * Resets only the PF-specific registers
4700                  *
4701                  * This goes directly to the tear-down and rebuild of
4702                  * the switch, since we need to do all the recovery as
4703                  * for the Core Reset.
4704                  */
4705                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
4706                 i40e_handle_reset_warning(pf);
4707
4708         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
4709                 int v;
4710
4711                 /* Find the VSI(s) that requested a re-init */
4712                 dev_info(&pf->pdev->dev,
4713                          "VSI reinit requested\n");
4714                 for (v = 0; v < pf->num_alloc_vsi; v++) {
4715                         struct i40e_vsi *vsi = pf->vsi[v];
4716                         if (vsi != NULL &&
4717                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
4718                                 i40e_vsi_reinit_locked(pf->vsi[v]);
4719                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
4720                         }
4721                 }
4722
4723                 /* no further action needed, so return now */
4724                 return;
4725         } else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
4726                 int v;
4727
4728                 /* Find the VSI(s) that needs to be brought down */
4729                 dev_info(&pf->pdev->dev, "VSI down requested\n");
4730                 for (v = 0; v < pf->num_alloc_vsi; v++) {
4731                         struct i40e_vsi *vsi = pf->vsi[v];
4732                         if (vsi != NULL &&
4733                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
4734                                 set_bit(__I40E_DOWN, &vsi->state);
4735                                 i40e_down(vsi);
4736                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
4737                         }
4738                 }
4739
4740                 /* no further action needed, so return now */
4741                 return;
4742         } else {
4743                 dev_info(&pf->pdev->dev,
4744                          "bad reset request 0x%08x\n", reset_flags);
4745                 return;
4746         }
4747 }
4748
4749 #ifdef CONFIG_I40E_DCB
4750 /**
4751  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
4752  * @pf: board private structure
4753  * @old_cfg: current DCB config
4754  * @new_cfg: new DCB config
4755  **/
4756 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
4757                             struct i40e_dcbx_config *old_cfg,
4758                             struct i40e_dcbx_config *new_cfg)
4759 {
4760         bool need_reconfig = false;
4761
4762         /* Check if ETS configuration has changed */
4763         if (memcmp(&new_cfg->etscfg,
4764                    &old_cfg->etscfg,
4765                    sizeof(new_cfg->etscfg))) {
4766                 /* If Priority Table has changed reconfig is needed */
4767                 if (memcmp(&new_cfg->etscfg.prioritytable,
4768                            &old_cfg->etscfg.prioritytable,
4769                            sizeof(new_cfg->etscfg.prioritytable))) {
4770                         need_reconfig = true;
4771                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
4772                 }
4773
4774                 if (memcmp(&new_cfg->etscfg.tcbwtable,
4775                            &old_cfg->etscfg.tcbwtable,
4776                            sizeof(new_cfg->etscfg.tcbwtable)))
4777                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
4778
4779                 if (memcmp(&new_cfg->etscfg.tsatable,
4780                            &old_cfg->etscfg.tsatable,
4781                            sizeof(new_cfg->etscfg.tsatable)))
4782                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
4783         }
4784
4785         /* Check if PFC configuration has changed */
4786         if (memcmp(&new_cfg->pfc,
4787                    &old_cfg->pfc,
4788                    sizeof(new_cfg->pfc))) {
4789                 need_reconfig = true;
4790                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
4791         }
4792
4793         /* Check if APP Table has changed */
4794         if (memcmp(&new_cfg->app,
4795                    &old_cfg->app,
4796                    sizeof(new_cfg->app))) {
4797                 need_reconfig = true;
4798                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
4799         }
4800
4801         return need_reconfig;
4802 }
4803
4804 /**
4805  * i40e_handle_lldp_event - Handle LLDP Change MIB event
4806  * @pf: board private structure
4807  * @e: event info posted on ARQ
4808  **/
4809 static int i40e_handle_lldp_event(struct i40e_pf *pf,
4810                                   struct i40e_arq_event_info *e)
4811 {
4812         struct i40e_aqc_lldp_get_mib *mib =
4813                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
4814         struct i40e_hw *hw = &pf->hw;
4815         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
4816         struct i40e_dcbx_config tmp_dcbx_cfg;
4817         bool need_reconfig = false;
4818         int ret = 0;
4819         u8 type;
4820
4821         /* Not DCB capable or capability disabled */
4822         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
4823                 return ret;
4824
4825         /* Ignore if event is not for Nearest Bridge */
4826         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
4827                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
4828         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
4829                 return ret;
4830
4831         /* Check MIB Type and return if event for Remote MIB update */
4832         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
4833         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
4834                 /* Update the remote cached instance and return */
4835                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
4836                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
4837                                 &hw->remote_dcbx_config);
4838                 goto exit;
4839         }
4840
4841         /* Convert/store the DCBX data from LLDPDU temporarily */
4842         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
4843         ret = i40e_lldp_to_dcb_config(e->msg_buf, &tmp_dcbx_cfg);
4844         if (ret) {
4845                 /* Error in LLDPDU parsing return */
4846                 dev_info(&pf->pdev->dev, "Failed parsing LLDPDU from event buffer\n");
4847                 goto exit;
4848         }
4849
4850         /* No change detected in DCBX configs */
4851         if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
4852                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
4853                 goto exit;
4854         }
4855
4856         need_reconfig = i40e_dcb_need_reconfig(pf, dcbx_cfg, &tmp_dcbx_cfg);
4857
4858         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg);
4859
4860         /* Overwrite the new configuration */
4861         *dcbx_cfg = tmp_dcbx_cfg;
4862
4863         if (!need_reconfig)
4864                 goto exit;
4865
4866         /* Enable DCB tagging only when more than one TC */
4867         if (i40e_dcb_get_num_tc(dcbx_cfg) > 1)
4868                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4869         else
4870                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
4871
4872         /* Reconfiguration needed quiesce all VSIs */
4873         i40e_pf_quiesce_all_vsi(pf);
4874
4875         /* Changes in configuration update VEB/VSI */
4876         i40e_dcb_reconfigure(pf);
4877
4878         i40e_pf_unquiesce_all_vsi(pf);
4879 exit:
4880         return ret;
4881 }
4882 #endif /* CONFIG_I40E_DCB */
4883
4884 /**
4885  * i40e_do_reset_safe - Protected reset path for userland calls.
4886  * @pf: board private structure
4887  * @reset_flags: which reset is requested
4888  *
4889  **/
4890 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
4891 {
4892         rtnl_lock();
4893         i40e_do_reset(pf, reset_flags);
4894         rtnl_unlock();
4895 }
4896
4897 /**
4898  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
4899  * @pf: board private structure
4900  * @e: event info posted on ARQ
4901  *
4902  * Handler for LAN Queue Overflow Event generated by the firmware for PF
4903  * and VF queues
4904  **/
4905 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
4906                                            struct i40e_arq_event_info *e)
4907 {
4908         struct i40e_aqc_lan_overflow *data =
4909                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
4910         u32 queue = le32_to_cpu(data->prtdcb_rupto);
4911         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
4912         struct i40e_hw *hw = &pf->hw;
4913         struct i40e_vf *vf;
4914         u16 vf_id;
4915
4916         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
4917                 queue, qtx_ctl);
4918
4919         /* Queue belongs to VF, find the VF and issue VF reset */
4920         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
4921             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
4922                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
4923                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
4924                 vf_id -= hw->func_caps.vf_base_id;
4925                 vf = &pf->vf[vf_id];
4926                 i40e_vc_notify_vf_reset(vf);
4927                 /* Allow VF to process pending reset notification */
4928                 msleep(20);
4929                 i40e_reset_vf(vf, false);
4930         }
4931 }
4932
4933 /**
4934  * i40e_service_event_complete - Finish up the service event
4935  * @pf: board private structure
4936  **/
4937 static void i40e_service_event_complete(struct i40e_pf *pf)
4938 {
4939         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
4940
4941         /* flush memory to make sure state is correct before next watchog */
4942         smp_mb__before_atomic();
4943         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
4944 }
4945
4946 /**
4947  * i40e_get_current_fd_count - Get the count of FD filters programmed in the HW
4948  * @pf: board private structure
4949  **/
4950 int i40e_get_current_fd_count(struct i40e_pf *pf)
4951 {
4952         int val, fcnt_prog;
4953         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
4954         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
4955                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
4956                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
4957         return fcnt_prog;
4958 }
4959
4960 /**
4961  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
4962  * @pf: board private structure
4963  **/
4964 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
4965 {
4966         u32 fcnt_prog, fcnt_avail;
4967
4968         /* Check if, FD SB or ATR was auto disabled and if there is enough room
4969          * to re-enable
4970          */
4971         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4972             (pf->flags & I40E_FLAG_FD_SB_ENABLED))
4973                 return;
4974         fcnt_prog = i40e_get_current_fd_count(pf);
4975         fcnt_avail = i40e_get_fd_cnt_all(pf);
4976         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) {
4977                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
4978                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
4979                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
4980                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
4981                 }
4982         }
4983         /* Wait for some more space to be available to turn on ATR */
4984         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
4985                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
4986                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
4987                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4988                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
4989                 }
4990         }
4991 }
4992
4993 /**
4994  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
4995  * @pf: board private structure
4996  **/
4997 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
4998 {
4999         if (!(pf->flags & I40E_FLAG_FDIR_REQUIRES_REINIT))
5000                 return;
5001
5002         /* if interface is down do nothing */
5003         if (test_bit(__I40E_DOWN, &pf->state))
5004                 return;
5005         i40e_fdir_check_and_reenable(pf);
5006
5007         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5008             (pf->flags & I40E_FLAG_FD_SB_ENABLED))
5009                 pf->flags &= ~I40E_FLAG_FDIR_REQUIRES_REINIT;
5010 }
5011
5012 /**
5013  * i40e_vsi_link_event - notify VSI of a link event
5014  * @vsi: vsi to be notified
5015  * @link_up: link up or down
5016  **/
5017 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5018 {
5019         if (!vsi)
5020                 return;
5021
5022         switch (vsi->type) {
5023         case I40E_VSI_MAIN:
5024                 if (!vsi->netdev || !vsi->netdev_registered)
5025                         break;
5026
5027                 if (link_up) {
5028                         netif_carrier_on(vsi->netdev);
5029                         netif_tx_wake_all_queues(vsi->netdev);
5030                 } else {
5031                         netif_carrier_off(vsi->netdev);
5032                         netif_tx_stop_all_queues(vsi->netdev);
5033                 }
5034                 break;
5035
5036         case I40E_VSI_SRIOV:
5037                 break;
5038
5039         case I40E_VSI_VMDQ2:
5040         case I40E_VSI_CTRL:
5041         case I40E_VSI_MIRROR:
5042         default:
5043                 /* there is no notification for other VSIs */
5044                 break;
5045         }
5046 }
5047
5048 /**
5049  * i40e_veb_link_event - notify elements on the veb of a link event
5050  * @veb: veb to be notified
5051  * @link_up: link up or down
5052  **/
5053 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5054 {
5055         struct i40e_pf *pf;
5056         int i;
5057
5058         if (!veb || !veb->pf)
5059                 return;
5060         pf = veb->pf;
5061
5062         /* depth first... */
5063         for (i = 0; i < I40E_MAX_VEB; i++)
5064                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5065                         i40e_veb_link_event(pf->veb[i], link_up);
5066
5067         /* ... now the local VSIs */
5068         for (i = 0; i < pf->num_alloc_vsi; i++)
5069                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5070                         i40e_vsi_link_event(pf->vsi[i], link_up);
5071 }
5072
5073 /**
5074  * i40e_link_event - Update netif_carrier status
5075  * @pf: board private structure
5076  **/
5077 static void i40e_link_event(struct i40e_pf *pf)
5078 {
5079         bool new_link, old_link;
5080
5081         new_link = (pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP);
5082         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5083
5084         if (new_link == old_link)
5085                 return;
5086         if (!test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state))
5087                 i40e_print_link_message(pf->vsi[pf->lan_vsi], new_link);
5088
5089         /* Notify the base of the switch tree connected to
5090          * the link.  Floating VEBs are not notified.
5091          */
5092         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5093                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5094         else
5095                 i40e_vsi_link_event(pf->vsi[pf->lan_vsi], new_link);
5096
5097         if (pf->vf)
5098                 i40e_vc_notify_link_state(pf);
5099
5100         if (pf->flags & I40E_FLAG_PTP)
5101                 i40e_ptp_set_increment(pf);
5102 }
5103
5104 /**
5105  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5106  * @pf: board private structure
5107  *
5108  * Set the per-queue flags to request a check for stuck queues in the irq
5109  * clean functions, then force interrupts to be sure the irq clean is called.
5110  **/
5111 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5112 {
5113         int i, v;
5114
5115         /* If we're down or resetting, just bail */
5116         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
5117                 return;
5118
5119         /* for each VSI/netdev
5120          *     for each Tx queue
5121          *         set the check flag
5122          *     for each q_vector
5123          *         force an interrupt
5124          */
5125         for (v = 0; v < pf->num_alloc_vsi; v++) {
5126                 struct i40e_vsi *vsi = pf->vsi[v];
5127                 int armed = 0;
5128
5129                 if (!pf->vsi[v] ||
5130                     test_bit(__I40E_DOWN, &vsi->state) ||
5131                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5132                         continue;
5133
5134                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5135                         set_check_for_tx_hang(vsi->tx_rings[i]);
5136                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5137                                      &vsi->tx_rings[i]->state))
5138                                 armed++;
5139                 }
5140
5141                 if (armed) {
5142                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5143                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5144                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5145                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
5146                         } else {
5147                                 u16 vec = vsi->base_vector - 1;
5148                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5149                                            I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
5150                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5151                                         wr32(&vsi->back->hw,
5152                                              I40E_PFINT_DYN_CTLN(vec), val);
5153                         }
5154                         i40e_flush(&vsi->back->hw);
5155                 }
5156         }
5157 }
5158
5159 /**
5160  * i40e_watchdog_subtask - Check and bring link up
5161  * @pf: board private structure
5162  **/
5163 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5164 {
5165         int i;
5166
5167         /* if interface is down do nothing */
5168         if (test_bit(__I40E_DOWN, &pf->state) ||
5169             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5170                 return;
5171
5172         /* Update the stats for active netdevs so the network stack
5173          * can look at updated numbers whenever it cares to
5174          */
5175         for (i = 0; i < pf->num_alloc_vsi; i++)
5176                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5177                         i40e_update_stats(pf->vsi[i]);
5178
5179         /* Update the stats for the active switching components */
5180         for (i = 0; i < I40E_MAX_VEB; i++)
5181                 if (pf->veb[i])
5182                         i40e_update_veb_stats(pf->veb[i]);
5183
5184         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5185 }
5186
5187 /**
5188  * i40e_reset_subtask - Set up for resetting the device and driver
5189  * @pf: board private structure
5190  **/
5191 static void i40e_reset_subtask(struct i40e_pf *pf)
5192 {
5193         u32 reset_flags = 0;
5194
5195         rtnl_lock();
5196         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5197                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5198                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5199         }
5200         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5201                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5202                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5203         }
5204         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5205                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5206                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5207         }
5208         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5209                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5210                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5211         }
5212         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5213                 reset_flags |= (1 << __I40E_DOWN_REQUESTED);
5214                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5215         }
5216
5217         /* If there's a recovery already waiting, it takes
5218          * precedence before starting a new reset sequence.
5219          */
5220         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5221                 i40e_handle_reset_warning(pf);
5222                 goto unlock;
5223         }
5224
5225         /* If we're already down or resetting, just bail */
5226         if (reset_flags &&
5227             !test_bit(__I40E_DOWN, &pf->state) &&
5228             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5229                 i40e_do_reset(pf, reset_flags);
5230
5231 unlock:
5232         rtnl_unlock();
5233 }
5234
5235 /**
5236  * i40e_handle_link_event - Handle link event
5237  * @pf: board private structure
5238  * @e: event info posted on ARQ
5239  **/
5240 static void i40e_handle_link_event(struct i40e_pf *pf,
5241                                    struct i40e_arq_event_info *e)
5242 {
5243         struct i40e_hw *hw = &pf->hw;
5244         struct i40e_aqc_get_link_status *status =
5245                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5246         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
5247
5248         /* save off old link status information */
5249         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
5250                sizeof(pf->hw.phy.link_info_old));
5251
5252         /* update link status */
5253         hw_link_info->phy_type = (enum i40e_aq_phy_type)status->phy_type;
5254         hw_link_info->link_speed = (enum i40e_aq_link_speed)status->link_speed;
5255         hw_link_info->link_info = status->link_info;
5256         hw_link_info->an_info = status->an_info;
5257         hw_link_info->ext_info = status->ext_info;
5258         hw_link_info->lse_enable =
5259                 le16_to_cpu(status->command_flags) &
5260                             I40E_AQ_LSE_ENABLE;
5261
5262         /* process the event */
5263         i40e_link_event(pf);
5264
5265         /* Do a new status request to re-enable LSE reporting
5266          * and load new status information into the hw struct,
5267          * then see if the status changed while processing the
5268          * initial event.
5269          */
5270         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
5271         i40e_link_event(pf);
5272 }
5273
5274 /**
5275  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5276  * @pf: board private structure
5277  **/
5278 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5279 {
5280         struct i40e_arq_event_info event;
5281         struct i40e_hw *hw = &pf->hw;
5282         u16 pending, i = 0;
5283         i40e_status ret;
5284         u16 opcode;
5285         u32 oldval;
5286         u32 val;
5287
5288         if (!test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state))
5289                 return;
5290
5291         /* check for error indications */
5292         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5293         oldval = val;
5294         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5295                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5296                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5297         }
5298         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5299                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5300                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5301         }
5302         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5303                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5304                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5305         }
5306         if (oldval != val)
5307                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5308
5309         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5310         oldval = val;
5311         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5312                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5313                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5314         }
5315         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5316                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5317                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5318         }
5319         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5320                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5321                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5322         }
5323         if (oldval != val)
5324                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5325
5326         event.msg_size = I40E_MAX_AQ_BUF_SIZE;
5327         event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
5328         if (!event.msg_buf)
5329                 return;
5330
5331         do {
5332                 event.msg_size = I40E_MAX_AQ_BUF_SIZE; /* reinit each time */
5333                 ret = i40e_clean_arq_element(hw, &event, &pending);
5334                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK) {
5335                         dev_info(&pf->pdev->dev, "No ARQ event found\n");
5336                         break;
5337                 } else if (ret) {
5338                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5339                         break;
5340                 }
5341
5342                 opcode = le16_to_cpu(event.desc.opcode);
5343                 switch (opcode) {
5344
5345                 case i40e_aqc_opc_get_link_status:
5346                         i40e_handle_link_event(pf, &event);
5347                         break;
5348                 case i40e_aqc_opc_send_msg_to_pf:
5349                         ret = i40e_vc_process_vf_msg(pf,
5350                                         le16_to_cpu(event.desc.retval),
5351                                         le32_to_cpu(event.desc.cookie_high),
5352                                         le32_to_cpu(event.desc.cookie_low),
5353                                         event.msg_buf,
5354                                         event.msg_size);
5355                         break;
5356                 case i40e_aqc_opc_lldp_update_mib:
5357                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5358 #ifdef CONFIG_I40E_DCB
5359                         rtnl_lock();
5360                         ret = i40e_handle_lldp_event(pf, &event);
5361                         rtnl_unlock();
5362 #endif /* CONFIG_I40E_DCB */
5363                         break;
5364                 case i40e_aqc_opc_event_lan_overflow:
5365                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5366                         i40e_handle_lan_overflow_event(pf, &event);
5367                         break;
5368                 case i40e_aqc_opc_send_msg_to_peer:
5369                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5370                         break;
5371                 default:
5372                         dev_info(&pf->pdev->dev,
5373                                  "ARQ Error: Unknown event 0x%04x received\n",
5374                                  opcode);
5375                         break;
5376                 }
5377         } while (pending && (i++ < pf->adminq_work_limit));
5378
5379         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5380         /* re-enable Admin queue interrupt cause */
5381         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5382         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5383         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5384         i40e_flush(hw);
5385
5386         kfree(event.msg_buf);
5387 }
5388
5389 /**
5390  * i40e_verify_eeprom - make sure eeprom is good to use
5391  * @pf: board private structure
5392  **/
5393 static void i40e_verify_eeprom(struct i40e_pf *pf)
5394 {
5395         int err;
5396
5397         err = i40e_diag_eeprom_test(&pf->hw);
5398         if (err) {
5399                 /* retry in case of garbage read */
5400                 err = i40e_diag_eeprom_test(&pf->hw);
5401                 if (err) {
5402                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5403                                  err);
5404                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5405                 }
5406         }
5407
5408         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5409                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5410                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5411         }
5412 }
5413
5414 /**
5415  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5416  * @veb: pointer to the VEB instance
5417  *
5418  * This is a recursive function that first builds the attached VSIs then
5419  * recurses in to build the next layer of VEB.  We track the connections
5420  * through our own index numbers because the seid's from the HW could
5421  * change across the reset.
5422  **/
5423 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5424 {
5425         struct i40e_vsi *ctl_vsi = NULL;
5426         struct i40e_pf *pf = veb->pf;
5427         int v, veb_idx;
5428         int ret;
5429
5430         /* build VSI that owns this VEB, temporarily attached to base VEB */
5431         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
5432                 if (pf->vsi[v] &&
5433                     pf->vsi[v]->veb_idx == veb->idx &&
5434                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5435                         ctl_vsi = pf->vsi[v];
5436                         break;
5437                 }
5438         }
5439         if (!ctl_vsi) {
5440                 dev_info(&pf->pdev->dev,
5441                          "missing owner VSI for veb_idx %d\n", veb->idx);
5442                 ret = -ENOENT;
5443                 goto end_reconstitute;
5444         }
5445         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5446                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5447         ret = i40e_add_vsi(ctl_vsi);
5448         if (ret) {
5449                 dev_info(&pf->pdev->dev,
5450                          "rebuild of owner VSI failed: %d\n", ret);
5451                 goto end_reconstitute;
5452         }
5453         i40e_vsi_reset_stats(ctl_vsi);
5454
5455         /* create the VEB in the switch and move the VSI onto the VEB */
5456         ret = i40e_add_veb(veb, ctl_vsi);
5457         if (ret)
5458                 goto end_reconstitute;
5459
5460         /* create the remaining VSIs attached to this VEB */
5461         for (v = 0; v < pf->num_alloc_vsi; v++) {
5462                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5463                         continue;
5464
5465                 if (pf->vsi[v]->veb_idx == veb->idx) {
5466                         struct i40e_vsi *vsi = pf->vsi[v];
5467                         vsi->uplink_seid = veb->seid;
5468                         ret = i40e_add_vsi(vsi);
5469                         if (ret) {
5470                                 dev_info(&pf->pdev->dev,
5471                                          "rebuild of vsi_idx %d failed: %d\n",
5472                                          v, ret);
5473                                 goto end_reconstitute;
5474                         }
5475                         i40e_vsi_reset_stats(vsi);
5476                 }
5477         }
5478
5479         /* create any VEBs attached to this VEB - RECURSION */
5480         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5481                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5482                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5483                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5484                         if (ret)
5485                                 break;
5486                 }
5487         }
5488
5489 end_reconstitute:
5490         return ret;
5491 }
5492
5493 /**
5494  * i40e_get_capabilities - get info about the HW
5495  * @pf: the PF struct
5496  **/
5497 static int i40e_get_capabilities(struct i40e_pf *pf)
5498 {
5499         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5500         u16 data_size;
5501         int buf_len;
5502         int err;
5503
5504         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5505         do {
5506                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5507                 if (!cap_buf)
5508                         return -ENOMEM;
5509
5510                 /* this loads the data into the hw struct for us */
5511                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5512                                             &data_size,
5513                                             i40e_aqc_opc_list_func_capabilities,
5514                                             NULL);
5515                 /* data loaded, buffer no longer needed */
5516                 kfree(cap_buf);
5517
5518                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
5519                         /* retry with a larger buffer */
5520                         buf_len = data_size;
5521                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
5522                         dev_info(&pf->pdev->dev,
5523                                  "capability discovery failed: aq=%d\n",
5524                                  pf->hw.aq.asq_last_status);
5525                         return -ENODEV;
5526                 }
5527         } while (err);
5528
5529         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
5530             (pf->hw.aq.fw_maj_ver < 2)) {
5531                 pf->hw.func_caps.num_msix_vectors++;
5532                 pf->hw.func_caps.num_msix_vectors_vf++;
5533         }
5534
5535         if (pf->hw.debug_mask & I40E_DEBUG_USER)
5536                 dev_info(&pf->pdev->dev,
5537                          "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",
5538                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
5539                          pf->hw.func_caps.num_msix_vectors,
5540                          pf->hw.func_caps.num_msix_vectors_vf,
5541                          pf->hw.func_caps.fd_filters_guaranteed,
5542                          pf->hw.func_caps.fd_filters_best_effort,
5543                          pf->hw.func_caps.num_tx_qp,
5544                          pf->hw.func_caps.num_vsis);
5545
5546 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
5547                        + pf->hw.func_caps.num_vfs)
5548         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
5549                 dev_info(&pf->pdev->dev,
5550                          "got num_vsis %d, setting num_vsis to %d\n",
5551                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
5552                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
5553         }
5554
5555         return 0;
5556 }
5557
5558 static int i40e_vsi_clear(struct i40e_vsi *vsi);
5559
5560 /**
5561  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
5562  * @pf: board private structure
5563  **/
5564 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
5565 {
5566         struct i40e_vsi *vsi;
5567         int i;
5568
5569         /* quick workaround for an NVM issue that leaves a critical register
5570          * uninitialized
5571          */
5572         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
5573                 static const u32 hkey[] = {
5574                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
5575                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
5576                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
5577                         0x95b3a76d};
5578
5579                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
5580                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
5581         }
5582
5583         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
5584                 return;
5585
5586         /* find existing VSI and see if it needs configuring */
5587         vsi = NULL;
5588         for (i = 0; i < pf->num_alloc_vsi; i++) {
5589                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5590                         vsi = pf->vsi[i];
5591                         break;
5592                 }
5593         }
5594
5595         /* create a new VSI if none exists */
5596         if (!vsi) {
5597                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
5598                                      pf->vsi[pf->lan_vsi]->seid, 0);
5599                 if (!vsi) {
5600                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
5601                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
5602                         return;
5603                 }
5604         }
5605
5606         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
5607 }
5608
5609 /**
5610  * i40e_fdir_teardown - release the Flow Director resources
5611  * @pf: board private structure
5612  **/
5613 static void i40e_fdir_teardown(struct i40e_pf *pf)
5614 {
5615         int i;
5616
5617         i40e_fdir_filter_exit(pf);
5618         for (i = 0; i < pf->num_alloc_vsi; i++) {
5619                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5620                         i40e_vsi_release(pf->vsi[i]);
5621                         break;
5622                 }
5623         }
5624 }
5625
5626 /**
5627  * i40e_prep_for_reset - prep for the core to reset
5628  * @pf: board private structure
5629  *
5630  * Close up the VFs and other things in prep for pf Reset.
5631   **/
5632 static void i40e_prep_for_reset(struct i40e_pf *pf)
5633 {
5634         struct i40e_hw *hw = &pf->hw;
5635         i40e_status ret = 0;
5636         u32 v;
5637
5638         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
5639         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
5640                 return;
5641
5642         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
5643
5644         /* quiesce the VSIs and their queues that are not already DOWN */
5645         i40e_pf_quiesce_all_vsi(pf);
5646
5647         for (v = 0; v < pf->num_alloc_vsi; v++) {
5648                 if (pf->vsi[v])
5649                         pf->vsi[v]->seid = 0;
5650         }
5651
5652         i40e_shutdown_adminq(&pf->hw);
5653
5654         /* call shutdown HMC */
5655         if (hw->hmc.hmc_obj) {
5656                 ret = i40e_shutdown_lan_hmc(hw);
5657                 if (ret)
5658                         dev_warn(&pf->pdev->dev,
5659                                  "shutdown_lan_hmc failed: %d\n", ret);
5660         }
5661 }
5662
5663 /**
5664  * i40e_send_version - update firmware with driver version
5665  * @pf: PF struct
5666  */
5667 static void i40e_send_version(struct i40e_pf *pf)
5668 {
5669         struct i40e_driver_version dv;
5670
5671         dv.major_version = DRV_VERSION_MAJOR;
5672         dv.minor_version = DRV_VERSION_MINOR;
5673         dv.build_version = DRV_VERSION_BUILD;
5674         dv.subbuild_version = 0;
5675         strncpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
5676         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
5677 }
5678
5679 /**
5680  * i40e_reset_and_rebuild - reset and rebuild using a saved config
5681  * @pf: board private structure
5682  * @reinit: if the Main VSI needs to re-initialized.
5683  **/
5684 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
5685 {
5686         struct i40e_hw *hw = &pf->hw;
5687         i40e_status ret;
5688         u32 v;
5689
5690         /* Now we wait for GRST to settle out.
5691          * We don't have to delete the VEBs or VSIs from the hw switch
5692          * because the reset will make them disappear.
5693          */
5694         ret = i40e_pf_reset(hw);
5695         if (ret) {
5696                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
5697                 goto end_core_reset;
5698         }
5699         pf->pfr_count++;
5700
5701         if (test_bit(__I40E_DOWN, &pf->state))
5702                 goto end_core_reset;
5703         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
5704
5705         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
5706         ret = i40e_init_adminq(&pf->hw);
5707         if (ret) {
5708                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
5709                 goto end_core_reset;
5710         }
5711
5712         /* re-verify the eeprom if we just had an EMP reset */
5713         if (test_bit(__I40E_EMP_RESET_REQUESTED, &pf->state)) {
5714                 clear_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
5715                 i40e_verify_eeprom(pf);
5716         }
5717
5718         i40e_clear_pxe_mode(hw);
5719         ret = i40e_get_capabilities(pf);
5720         if (ret) {
5721                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
5722                          ret);
5723                 goto end_core_reset;
5724         }
5725
5726         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
5727                                 hw->func_caps.num_rx_qp,
5728                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
5729         if (ret) {
5730                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
5731                 goto end_core_reset;
5732         }
5733         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
5734         if (ret) {
5735                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
5736                 goto end_core_reset;
5737         }
5738
5739 #ifdef CONFIG_I40E_DCB
5740         ret = i40e_init_pf_dcb(pf);
5741         if (ret) {
5742                 dev_info(&pf->pdev->dev, "init_pf_dcb failed: %d\n", ret);
5743                 goto end_core_reset;
5744         }
5745 #endif /* CONFIG_I40E_DCB */
5746
5747         /* do basic switch setup */
5748         ret = i40e_setup_pf_switch(pf, reinit);
5749         if (ret)
5750                 goto end_core_reset;
5751
5752         /* Rebuild the VSIs and VEBs that existed before reset.
5753          * They are still in our local switch element arrays, so only
5754          * need to rebuild the switch model in the HW.
5755          *
5756          * If there were VEBs but the reconstitution failed, we'll try
5757          * try to recover minimal use by getting the basic PF VSI working.
5758          */
5759         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
5760                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
5761                 /* find the one VEB connected to the MAC, and find orphans */
5762                 for (v = 0; v < I40E_MAX_VEB; v++) {
5763                         if (!pf->veb[v])
5764                                 continue;
5765
5766                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
5767                             pf->veb[v]->uplink_seid == 0) {
5768                                 ret = i40e_reconstitute_veb(pf->veb[v]);
5769
5770                                 if (!ret)
5771                                         continue;
5772
5773                                 /* If Main VEB failed, we're in deep doodoo,
5774                                  * so give up rebuilding the switch and set up
5775                                  * for minimal rebuild of PF VSI.
5776                                  * If orphan failed, we'll report the error
5777                                  * but try to keep going.
5778                                  */
5779                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
5780                                         dev_info(&pf->pdev->dev,
5781                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
5782                                                  ret);
5783                                         pf->vsi[pf->lan_vsi]->uplink_seid
5784                                                                 = pf->mac_seid;
5785                                         break;
5786                                 } else if (pf->veb[v]->uplink_seid == 0) {
5787                                         dev_info(&pf->pdev->dev,
5788                                                  "rebuild of orphan VEB failed: %d\n",
5789                                                  ret);
5790                                 }
5791                         }
5792                 }
5793         }
5794
5795         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
5796                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
5797                 /* no VEB, so rebuild only the Main VSI */
5798                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
5799                 if (ret) {
5800                         dev_info(&pf->pdev->dev,
5801                                  "rebuild of Main VSI failed: %d\n", ret);
5802                         goto end_core_reset;
5803                 }
5804         }
5805
5806         /* reinit the misc interrupt */
5807         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5808                 ret = i40e_setup_misc_vector(pf);
5809
5810         /* restart the VSIs that were rebuilt and running before the reset */
5811         i40e_pf_unquiesce_all_vsi(pf);
5812
5813         if (pf->num_alloc_vfs) {
5814                 for (v = 0; v < pf->num_alloc_vfs; v++)
5815                         i40e_reset_vf(&pf->vf[v], true);
5816         }
5817
5818         /* tell the firmware that we're starting */
5819         i40e_send_version(pf);
5820
5821 end_core_reset:
5822         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
5823 }
5824
5825 /**
5826  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
5827  * @pf: board private structure
5828  *
5829  * Close up the VFs and other things in prep for a Core Reset,
5830  * then get ready to rebuild the world.
5831  **/
5832 static void i40e_handle_reset_warning(struct i40e_pf *pf)
5833 {
5834         i40e_prep_for_reset(pf);
5835         i40e_reset_and_rebuild(pf, false);
5836 }
5837
5838 /**
5839  * i40e_handle_mdd_event
5840  * @pf: pointer to the pf structure
5841  *
5842  * Called from the MDD irq handler to identify possibly malicious vfs
5843  **/
5844 static void i40e_handle_mdd_event(struct i40e_pf *pf)
5845 {
5846         struct i40e_hw *hw = &pf->hw;
5847         bool mdd_detected = false;
5848         bool pf_mdd_detected = false;
5849         struct i40e_vf *vf;
5850         u32 reg;
5851         int i;
5852
5853         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
5854                 return;
5855
5856         /* find what triggered the MDD event */
5857         reg = rd32(hw, I40E_GL_MDET_TX);
5858         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
5859                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
5860                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
5861                 u8 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
5862                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
5863                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_SHIFT) >>
5864                                 I40E_GL_MDET_TX_EVENT_SHIFT;
5865                 u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
5866                                 I40E_GL_MDET_TX_QUEUE_SHIFT;
5867                 dev_info(&pf->pdev->dev,
5868                          "Malicious Driver Detection event 0x%02x on TX queue %d pf number 0x%02x vf number 0x%02x\n",
5869                          event, queue, pf_num, vf_num);
5870                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
5871                 mdd_detected = true;
5872         }
5873         reg = rd32(hw, I40E_GL_MDET_RX);
5874         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
5875                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
5876                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
5877                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_SHIFT) >>
5878                                 I40E_GL_MDET_RX_EVENT_SHIFT;
5879                 u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
5880                                 I40E_GL_MDET_RX_QUEUE_SHIFT;
5881                 dev_info(&pf->pdev->dev,
5882                          "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
5883                          event, queue, func);
5884                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
5885                 mdd_detected = true;
5886         }
5887
5888         if (mdd_detected) {
5889                 reg = rd32(hw, I40E_PF_MDET_TX);
5890                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
5891                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
5892                         dev_info(&pf->pdev->dev,
5893                                  "MDD TX event is for this function 0x%08x, requesting PF reset.\n",
5894                                  reg);
5895                         pf_mdd_detected = true;
5896                 }
5897                 reg = rd32(hw, I40E_PF_MDET_RX);
5898                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
5899                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
5900                         dev_info(&pf->pdev->dev,
5901                                  "MDD RX event is for this function 0x%08x, requesting PF reset.\n",
5902                                  reg);
5903                         pf_mdd_detected = true;
5904                 }
5905                 /* Queue belongs to the PF, initiate a reset */
5906                 if (pf_mdd_detected) {
5907                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5908                         i40e_service_event_schedule(pf);
5909                 }
5910         }
5911
5912         /* see if one of the VFs needs its hand slapped */
5913         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
5914                 vf = &(pf->vf[i]);
5915                 reg = rd32(hw, I40E_VP_MDET_TX(i));
5916                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
5917                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
5918                         vf->num_mdd_events++;
5919                         dev_info(&pf->pdev->dev, "MDD TX event on VF %d\n", i);
5920                 }
5921
5922                 reg = rd32(hw, I40E_VP_MDET_RX(i));
5923                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
5924                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
5925                         vf->num_mdd_events++;
5926                         dev_info(&pf->pdev->dev, "MDD RX event on VF %d\n", i);
5927                 }
5928
5929                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
5930                         dev_info(&pf->pdev->dev,
5931                                  "Too many MDD events on VF %d, disabled\n", i);
5932                         dev_info(&pf->pdev->dev,
5933                                  "Use PF Control I/F to re-enable the VF\n");
5934                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
5935                 }
5936         }
5937
5938         /* re-enable mdd interrupt cause */
5939         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
5940         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
5941         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
5942         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
5943         i40e_flush(hw);
5944 }
5945
5946 #ifdef CONFIG_I40E_VXLAN
5947 /**
5948  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
5949  * @pf: board private structure
5950  **/
5951 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
5952 {
5953         struct i40e_hw *hw = &pf->hw;
5954         i40e_status ret;
5955         u8 filter_index;
5956         __be16 port;
5957         int i;
5958
5959         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
5960                 return;
5961
5962         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
5963
5964         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
5965                 if (pf->pending_vxlan_bitmap & (1 << i)) {
5966                         pf->pending_vxlan_bitmap &= ~(1 << i);
5967                         port = pf->vxlan_ports[i];
5968                         ret = port ?
5969                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
5970                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
5971                                                      &filter_index, NULL)
5972                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
5973
5974                         if (ret) {
5975                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
5976                                          port ? "adding" : "deleting",
5977                                          ntohs(port), port ? i : i);
5978
5979                                 pf->vxlan_ports[i] = 0;
5980                         } else {
5981                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
5982                                          port ? "Added" : "Deleted",
5983                                          ntohs(port), port ? i : filter_index);
5984                         }
5985                 }
5986         }
5987 }
5988
5989 #endif
5990 /**
5991  * i40e_service_task - Run the driver's async subtasks
5992  * @work: pointer to work_struct containing our data
5993  **/
5994 static void i40e_service_task(struct work_struct *work)
5995 {
5996         struct i40e_pf *pf = container_of(work,
5997                                           struct i40e_pf,
5998                                           service_task);
5999         unsigned long start_time = jiffies;
6000
6001         /* don't bother with service tasks if a reset is in progress */
6002         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6003                 i40e_service_event_complete(pf);
6004                 return;
6005         }
6006
6007         i40e_reset_subtask(pf);
6008         i40e_handle_mdd_event(pf);
6009         i40e_vc_process_vflr_event(pf);
6010         i40e_watchdog_subtask(pf);
6011         i40e_fdir_reinit_subtask(pf);
6012         i40e_check_hang_subtask(pf);
6013         i40e_sync_filters_subtask(pf);
6014 #ifdef CONFIG_I40E_VXLAN
6015         i40e_sync_vxlan_filters_subtask(pf);
6016 #endif
6017         i40e_clean_adminq_subtask(pf);
6018
6019         i40e_service_event_complete(pf);
6020
6021         /* If the tasks have taken longer than one timer cycle or there
6022          * is more work to be done, reschedule the service task now
6023          * rather than wait for the timer to tick again.
6024          */
6025         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6026             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6027             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6028             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6029                 i40e_service_event_schedule(pf);
6030 }
6031
6032 /**
6033  * i40e_service_timer - timer callback
6034  * @data: pointer to PF struct
6035  **/
6036 static void i40e_service_timer(unsigned long data)
6037 {
6038         struct i40e_pf *pf = (struct i40e_pf *)data;
6039
6040         mod_timer(&pf->service_timer,
6041                   round_jiffies(jiffies + pf->service_timer_period));
6042         i40e_service_event_schedule(pf);
6043 }
6044
6045 /**
6046  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6047  * @vsi: the VSI being configured
6048  **/
6049 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6050 {
6051         struct i40e_pf *pf = vsi->back;
6052
6053         switch (vsi->type) {
6054         case I40E_VSI_MAIN:
6055                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6056                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6057                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6058                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6059                         vsi->num_q_vectors = pf->num_lan_msix;
6060                 else
6061                         vsi->num_q_vectors = 1;
6062
6063                 break;
6064
6065         case I40E_VSI_FDIR:
6066                 vsi->alloc_queue_pairs = 1;
6067                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6068                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6069                 vsi->num_q_vectors = 1;
6070                 break;
6071
6072         case I40E_VSI_VMDQ2:
6073                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6074                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6075                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6076                 vsi->num_q_vectors = pf->num_vmdq_msix;
6077                 break;
6078
6079         case I40E_VSI_SRIOV:
6080                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6081                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6082                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6083                 break;
6084
6085         default:
6086                 WARN_ON(1);
6087                 return -ENODATA;
6088         }
6089
6090         return 0;
6091 }
6092
6093 /**
6094  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6095  * @type: VSI pointer
6096  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6097  *
6098  * On error: returns error code (negative)
6099  * On success: returns 0
6100  **/
6101 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6102 {
6103         int size;
6104         int ret = 0;
6105
6106         /* allocate memory for both Tx and Rx ring pointers */
6107         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6108         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6109         if (!vsi->tx_rings)
6110                 return -ENOMEM;
6111         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6112
6113         if (alloc_qvectors) {
6114                 /* allocate memory for q_vector pointers */
6115                 size = sizeof(struct i40e_q_vectors *) * vsi->num_q_vectors;
6116                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6117                 if (!vsi->q_vectors) {
6118                         ret = -ENOMEM;
6119                         goto err_vectors;
6120                 }
6121         }
6122         return ret;
6123
6124 err_vectors:
6125         kfree(vsi->tx_rings);
6126         return ret;
6127 }
6128
6129 /**
6130  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6131  * @pf: board private structure
6132  * @type: type of VSI
6133  *
6134  * On error: returns error code (negative)
6135  * On success: returns vsi index in PF (positive)
6136  **/
6137 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6138 {
6139         int ret = -ENODEV;
6140         struct i40e_vsi *vsi;
6141         int vsi_idx;
6142         int i;
6143
6144         /* Need to protect the allocation of the VSIs at the PF level */
6145         mutex_lock(&pf->switch_mutex);
6146
6147         /* VSI list may be fragmented if VSI creation/destruction has
6148          * been happening.  We can afford to do a quick scan to look
6149          * for any free VSIs in the list.
6150          *
6151          * find next empty vsi slot, looping back around if necessary
6152          */
6153         i = pf->next_vsi;
6154         while (i < pf->num_alloc_vsi && pf->vsi[i])
6155                 i++;
6156         if (i >= pf->num_alloc_vsi) {
6157                 i = 0;
6158                 while (i < pf->next_vsi && pf->vsi[i])
6159                         i++;
6160         }
6161
6162         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6163                 vsi_idx = i;             /* Found one! */
6164         } else {
6165                 ret = -ENODEV;
6166                 goto unlock_pf;  /* out of VSI slots! */
6167         }
6168         pf->next_vsi = ++i;
6169
6170         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6171         if (!vsi) {
6172                 ret = -ENOMEM;
6173                 goto unlock_pf;
6174         }
6175         vsi->type = type;
6176         vsi->back = pf;
6177         set_bit(__I40E_DOWN, &vsi->state);
6178         vsi->flags = 0;
6179         vsi->idx = vsi_idx;
6180         vsi->rx_itr_setting = pf->rx_itr_default;
6181         vsi->tx_itr_setting = pf->tx_itr_default;
6182         vsi->netdev_registered = false;
6183         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6184         INIT_LIST_HEAD(&vsi->mac_filter_list);
6185         vsi->irqs_ready = false;
6186
6187         ret = i40e_set_num_rings_in_vsi(vsi);
6188         if (ret)
6189                 goto err_rings;
6190
6191         ret = i40e_vsi_alloc_arrays(vsi, true);
6192         if (ret)
6193                 goto err_rings;
6194
6195         /* Setup default MSIX irq handler for VSI */
6196         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6197
6198         pf->vsi[vsi_idx] = vsi;
6199         ret = vsi_idx;
6200         goto unlock_pf;
6201
6202 err_rings:
6203         pf->next_vsi = i - 1;
6204         kfree(vsi);
6205 unlock_pf:
6206         mutex_unlock(&pf->switch_mutex);
6207         return ret;
6208 }
6209
6210 /**
6211  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6212  * @type: VSI pointer
6213  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6214  *
6215  * On error: returns error code (negative)
6216  * On success: returns 0
6217  **/
6218 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6219 {
6220         /* free the ring and vector containers */
6221         if (free_qvectors) {
6222                 kfree(vsi->q_vectors);
6223                 vsi->q_vectors = NULL;
6224         }
6225         kfree(vsi->tx_rings);
6226         vsi->tx_rings = NULL;
6227         vsi->rx_rings = NULL;
6228 }
6229
6230 /**
6231  * i40e_vsi_clear - Deallocate the VSI provided
6232  * @vsi: the VSI being un-configured
6233  **/
6234 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6235 {
6236         struct i40e_pf *pf;
6237
6238         if (!vsi)
6239                 return 0;
6240
6241         if (!vsi->back)
6242                 goto free_vsi;
6243         pf = vsi->back;
6244
6245         mutex_lock(&pf->switch_mutex);
6246         if (!pf->vsi[vsi->idx]) {
6247                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6248                         vsi->idx, vsi->idx, vsi, vsi->type);
6249                 goto unlock_vsi;
6250         }
6251
6252         if (pf->vsi[vsi->idx] != vsi) {
6253                 dev_err(&pf->pdev->dev,
6254                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6255                         pf->vsi[vsi->idx]->idx,
6256                         pf->vsi[vsi->idx],
6257                         pf->vsi[vsi->idx]->type,
6258                         vsi->idx, vsi, vsi->type);
6259                 goto unlock_vsi;
6260         }
6261
6262         /* updates the pf for this cleared vsi */
6263         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6264         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6265
6266         i40e_vsi_free_arrays(vsi, true);
6267
6268         pf->vsi[vsi->idx] = NULL;
6269         if (vsi->idx < pf->next_vsi)
6270                 pf->next_vsi = vsi->idx;
6271
6272 unlock_vsi:
6273         mutex_unlock(&pf->switch_mutex);
6274 free_vsi:
6275         kfree(vsi);
6276
6277         return 0;
6278 }
6279
6280 /**
6281  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6282  * @vsi: the VSI being cleaned
6283  **/
6284 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6285 {
6286         int i;
6287
6288         if (vsi->tx_rings && vsi->tx_rings[0]) {
6289                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6290                         kfree_rcu(vsi->tx_rings[i], rcu);
6291                         vsi->tx_rings[i] = NULL;
6292                         vsi->rx_rings[i] = NULL;
6293                 }
6294         }
6295 }
6296
6297 /**
6298  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6299  * @vsi: the VSI being configured
6300  **/
6301 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6302 {
6303         struct i40e_ring *tx_ring, *rx_ring;
6304         struct i40e_pf *pf = vsi->back;
6305         int i;
6306
6307         /* Set basic values in the rings to be used later during open() */
6308         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6309                 /* allocate space for both Tx and Rx in one shot */
6310                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6311                 if (!tx_ring)
6312                         goto err_out;
6313
6314                 tx_ring->queue_index = i;
6315                 tx_ring->reg_idx = vsi->base_queue + i;
6316                 tx_ring->ring_active = false;
6317                 tx_ring->vsi = vsi;
6318                 tx_ring->netdev = vsi->netdev;
6319                 tx_ring->dev = &pf->pdev->dev;
6320                 tx_ring->count = vsi->num_desc;
6321                 tx_ring->size = 0;
6322                 tx_ring->dcb_tc = 0;
6323                 vsi->tx_rings[i] = tx_ring;
6324
6325                 rx_ring = &tx_ring[1];
6326                 rx_ring->queue_index = i;
6327                 rx_ring->reg_idx = vsi->base_queue + i;
6328                 rx_ring->ring_active = false;
6329                 rx_ring->vsi = vsi;
6330                 rx_ring->netdev = vsi->netdev;
6331                 rx_ring->dev = &pf->pdev->dev;
6332                 rx_ring->count = vsi->num_desc;
6333                 rx_ring->size = 0;
6334                 rx_ring->dcb_tc = 0;
6335                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6336                         set_ring_16byte_desc_enabled(rx_ring);
6337                 else
6338                         clear_ring_16byte_desc_enabled(rx_ring);
6339                 vsi->rx_rings[i] = rx_ring;
6340         }
6341
6342         return 0;
6343
6344 err_out:
6345         i40e_vsi_clear_rings(vsi);
6346         return -ENOMEM;
6347 }
6348
6349 /**
6350  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6351  * @pf: board private structure
6352  * @vectors: the number of MSI-X vectors to request
6353  *
6354  * Returns the number of vectors reserved, or error
6355  **/
6356 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6357 {
6358         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6359                                         I40E_MIN_MSIX, vectors);
6360         if (vectors < 0) {
6361                 dev_info(&pf->pdev->dev,
6362                          "MSI-X vector reservation failed: %d\n", vectors);
6363                 vectors = 0;
6364         }
6365
6366         return vectors;
6367 }
6368
6369 /**
6370  * i40e_init_msix - Setup the MSIX capability
6371  * @pf: board private structure
6372  *
6373  * Work with the OS to set up the MSIX vectors needed.
6374  *
6375  * Returns 0 on success, negative on failure
6376  **/
6377 static int i40e_init_msix(struct i40e_pf *pf)
6378 {
6379         i40e_status err = 0;
6380         struct i40e_hw *hw = &pf->hw;
6381         int v_budget, i;
6382         int vec;
6383
6384         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6385                 return -ENODEV;
6386
6387         /* The number of vectors we'll request will be comprised of:
6388          *   - Add 1 for "other" cause for Admin Queue events, etc.
6389          *   - The number of LAN queue pairs
6390          *      - Queues being used for RSS.
6391          *              We don't need as many as max_rss_size vectors.
6392          *              use rss_size instead in the calculation since that
6393          *              is governed by number of cpus in the system.
6394          *      - assumes symmetric Tx/Rx pairing
6395          *   - The number of VMDq pairs
6396          * Once we count this up, try the request.
6397          *
6398          * If we can't get what we want, we'll simplify to nearly nothing
6399          * and try again.  If that still fails, we punt.
6400          */
6401         pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
6402         pf->num_vmdq_msix = pf->num_vmdq_qps;
6403         v_budget = 1 + pf->num_lan_msix;
6404         v_budget += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6405         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6406                 v_budget++;
6407
6408         /* Scale down if necessary, and the rings will share vectors */
6409         v_budget = min_t(int, v_budget, hw->func_caps.num_msix_vectors);
6410
6411         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6412                                    GFP_KERNEL);
6413         if (!pf->msix_entries)
6414                 return -ENOMEM;
6415
6416         for (i = 0; i < v_budget; i++)
6417                 pf->msix_entries[i].entry = i;
6418         vec = i40e_reserve_msix_vectors(pf, v_budget);
6419
6420         if (vec != v_budget) {
6421                 /* If we have limited resources, we will start with no vectors
6422                  * for the special features and then allocate vectors to some
6423                  * of these features based on the policy and at the end disable
6424                  * the features that did not get any vectors.
6425                  */
6426                 pf->num_vmdq_msix = 0;
6427         }
6428
6429         if (vec < I40E_MIN_MSIX) {
6430                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6431                 kfree(pf->msix_entries);
6432                 pf->msix_entries = NULL;
6433                 return -ENODEV;
6434
6435         } else if (vec == I40E_MIN_MSIX) {
6436                 /* Adjust for minimal MSIX use */
6437                 pf->num_vmdq_vsis = 0;
6438                 pf->num_vmdq_qps = 0;
6439                 pf->num_lan_qps = 1;
6440                 pf->num_lan_msix = 1;
6441
6442         } else if (vec != v_budget) {
6443                 /* reserve the misc vector */
6444                 vec--;
6445
6446                 /* Scale vector usage down */
6447                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
6448                 pf->num_vmdq_vsis = 1;
6449
6450                 /* partition out the remaining vectors */
6451                 switch (vec) {
6452                 case 2:
6453                         pf->num_lan_msix = 1;
6454                         break;
6455                 case 3:
6456                         pf->num_lan_msix = 2;
6457                         break;
6458                 default:
6459                         pf->num_lan_msix = min_t(int, (vec / 2),
6460                                                  pf->num_lan_qps);
6461                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
6462                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
6463                         break;
6464                 }
6465         }
6466
6467         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
6468             (pf->num_vmdq_msix == 0)) {
6469                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
6470                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
6471         }
6472         return err;
6473 }
6474
6475 /**
6476  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
6477  * @vsi: the VSI being configured
6478  * @v_idx: index of the vector in the vsi struct
6479  *
6480  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
6481  **/
6482 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
6483 {
6484         struct i40e_q_vector *q_vector;
6485
6486         /* allocate q_vector */
6487         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
6488         if (!q_vector)
6489                 return -ENOMEM;
6490
6491         q_vector->vsi = vsi;
6492         q_vector->v_idx = v_idx;
6493         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
6494         if (vsi->netdev)
6495                 netif_napi_add(vsi->netdev, &q_vector->napi,
6496                                i40e_napi_poll, NAPI_POLL_WEIGHT);
6497
6498         q_vector->rx.latency_range = I40E_LOW_LATENCY;
6499         q_vector->tx.latency_range = I40E_LOW_LATENCY;
6500
6501         /* tie q_vector and vsi together */
6502         vsi->q_vectors[v_idx] = q_vector;
6503
6504         return 0;
6505 }
6506
6507 /**
6508  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
6509  * @vsi: the VSI being configured
6510  *
6511  * We allocate one q_vector per queue interrupt.  If allocation fails we
6512  * return -ENOMEM.
6513  **/
6514 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
6515 {
6516         struct i40e_pf *pf = vsi->back;
6517         int v_idx, num_q_vectors;
6518         int err;
6519
6520         /* if not MSIX, give the one vector only to the LAN VSI */
6521         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6522                 num_q_vectors = vsi->num_q_vectors;
6523         else if (vsi == pf->vsi[pf->lan_vsi])
6524                 num_q_vectors = 1;
6525         else
6526                 return -EINVAL;
6527
6528         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
6529                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
6530                 if (err)
6531                         goto err_out;
6532         }
6533
6534         return 0;
6535
6536 err_out:
6537         while (v_idx--)
6538                 i40e_free_q_vector(vsi, v_idx);
6539
6540         return err;
6541 }
6542
6543 /**
6544  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
6545  * @pf: board private structure to initialize
6546  **/
6547 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
6548 {
6549         int err = 0;
6550
6551         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
6552                 err = i40e_init_msix(pf);
6553                 if (err) {
6554                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
6555                                        I40E_FLAG_RSS_ENABLED    |
6556                                        I40E_FLAG_DCB_CAPABLE    |
6557                                        I40E_FLAG_SRIOV_ENABLED  |
6558                                        I40E_FLAG_FD_SB_ENABLED  |
6559                                        I40E_FLAG_FD_ATR_ENABLED |
6560                                        I40E_FLAG_VMDQ_ENABLED);
6561
6562                         /* rework the queue expectations without MSIX */
6563                         i40e_determine_queue_usage(pf);
6564                 }
6565         }
6566
6567         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
6568             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
6569                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
6570                 err = pci_enable_msi(pf->pdev);
6571                 if (err) {
6572                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
6573                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
6574                 }
6575         }
6576
6577         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
6578                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
6579
6580         /* track first vector for misc interrupts */
6581         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
6582 }
6583
6584 /**
6585  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
6586  * @pf: board private structure
6587  *
6588  * This sets up the handler for MSIX 0, which is used to manage the
6589  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
6590  * when in MSI or Legacy interrupt mode.
6591  **/
6592 static int i40e_setup_misc_vector(struct i40e_pf *pf)
6593 {
6594         struct i40e_hw *hw = &pf->hw;
6595         int err = 0;
6596
6597         /* Only request the irq if this is the first time through, and
6598          * not when we're rebuilding after a Reset
6599          */
6600         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6601                 err = request_irq(pf->msix_entries[0].vector,
6602                                   i40e_intr, 0, pf->misc_int_name, pf);
6603                 if (err) {
6604                         dev_info(&pf->pdev->dev,
6605                                  "request_irq for %s failed: %d\n",
6606                                  pf->misc_int_name, err);
6607                         return -EFAULT;
6608                 }
6609         }
6610
6611         i40e_enable_misc_int_causes(hw);
6612
6613         /* associate no queues to the misc vector */
6614         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
6615         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
6616
6617         i40e_flush(hw);
6618
6619         i40e_irq_dynamic_enable_icr0(pf);
6620
6621         return err;
6622 }
6623
6624 /**
6625  * i40e_config_rss - Prepare for RSS if used
6626  * @pf: board private structure
6627  **/
6628 static int i40e_config_rss(struct i40e_pf *pf)
6629 {
6630         /* Set of random keys generated using kernel random number generator */
6631         static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
6632                                 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
6633                                 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
6634                                 0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
6635         struct i40e_hw *hw = &pf->hw;
6636         u32 lut = 0;
6637         int i, j;
6638         u64 hena;
6639         u32 reg_val;
6640
6641         /* Fill out hash function seed */
6642         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
6643                 wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
6644
6645         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
6646         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
6647                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
6648         hena |= I40E_DEFAULT_RSS_HENA;
6649         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
6650         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
6651
6652         /* Check capability and Set table size and register per hw expectation*/
6653         reg_val = rd32(hw, I40E_PFQF_CTL_0);
6654         if (hw->func_caps.rss_table_size == 512) {
6655                 reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
6656                 pf->rss_table_size = 512;
6657         } else {
6658                 pf->rss_table_size = 128;
6659                 reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
6660         }
6661         wr32(hw, I40E_PFQF_CTL_0, reg_val);
6662
6663         /* Populate the LUT with max no. of queues in round robin fashion */
6664         for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
6665
6666                 /* The assumption is that lan qp count will be the highest
6667                  * qp count for any PF VSI that needs RSS.
6668                  * If multiple VSIs need RSS support, all the qp counts
6669                  * for those VSIs should be a power of 2 for RSS to work.
6670                  * If LAN VSI is the only consumer for RSS then this requirement
6671                  * is not necessary.
6672                  */
6673                 if (j == pf->rss_size)
6674                         j = 0;
6675                 /* lut = 4-byte sliding window of 4 lut entries */
6676                 lut = (lut << 8) | (j &
6677                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
6678                 /* On i = 3, we have 4 entries in lut; write to the register */
6679                 if ((i & 3) == 3)
6680                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
6681         }
6682         i40e_flush(hw);
6683
6684         return 0;
6685 }
6686
6687 /**
6688  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
6689  * @pf: board private structure
6690  * @queue_count: the requested queue count for rss.
6691  *
6692  * returns 0 if rss is not enabled, if enabled returns the final rss queue
6693  * count which may be different from the requested queue count.
6694  **/
6695 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
6696 {
6697         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
6698                 return 0;
6699
6700         queue_count = min_t(int, queue_count, pf->rss_size_max);
6701
6702         if (queue_count != pf->rss_size) {
6703                 i40e_prep_for_reset(pf);
6704
6705                 pf->rss_size = queue_count;
6706
6707                 i40e_reset_and_rebuild(pf, true);
6708                 i40e_config_rss(pf);
6709         }
6710         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
6711         return pf->rss_size;
6712 }
6713
6714 /**
6715  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
6716  * @pf: board private structure to initialize
6717  *
6718  * i40e_sw_init initializes the Adapter private data structure.
6719  * Fields are initialized based on PCI device information and
6720  * OS network device settings (MTU size).
6721  **/
6722 static int i40e_sw_init(struct i40e_pf *pf)
6723 {
6724         int err = 0;
6725         int size;
6726
6727         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
6728                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
6729         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
6730         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
6731                 if (I40E_DEBUG_USER & debug)
6732                         pf->hw.debug_mask = debug;
6733                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
6734                                                 I40E_DEFAULT_MSG_ENABLE);
6735         }
6736
6737         /* Set default capability flags */
6738         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
6739                     I40E_FLAG_MSI_ENABLED     |
6740                     I40E_FLAG_MSIX_ENABLED    |
6741                     I40E_FLAG_RX_1BUF_ENABLED;
6742
6743         /* Set default ITR */
6744         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
6745         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
6746
6747         /* Depending on PF configurations, it is possible that the RSS
6748          * maximum might end up larger than the available queues
6749          */
6750         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
6751         pf->rss_size_max = min_t(int, pf->rss_size_max,
6752                                  pf->hw.func_caps.num_tx_qp);
6753         if (pf->hw.func_caps.rss) {
6754                 pf->flags |= I40E_FLAG_RSS_ENABLED;
6755                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
6756         } else {
6757                 pf->rss_size = 1;
6758         }
6759
6760         /* MFP mode enabled */
6761         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
6762                 pf->flags |= I40E_FLAG_MFP_ENABLED;
6763                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
6764         }
6765
6766         /* FW/NVM is not yet fixed in this regard */
6767         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
6768             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
6769                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6770                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
6771                 /* Setup a counter for fd_atr per pf */
6772                 pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
6773                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
6774                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
6775                         /* Setup a counter for fd_sb per pf */
6776                         pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
6777                 } else {
6778                         dev_info(&pf->pdev->dev,
6779                                  "Flow Director Sideband mode Disabled in MFP mode\n");
6780                 }
6781                 pf->fdir_pf_filter_count =
6782                                  pf->hw.func_caps.fd_filters_guaranteed;
6783                 pf->hw.fdir_shared_filter_count =
6784                                  pf->hw.func_caps.fd_filters_best_effort;
6785         }
6786
6787         if (pf->hw.func_caps.vmdq) {
6788                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
6789                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
6790                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
6791         }
6792
6793 #ifdef CONFIG_PCI_IOV
6794         if (pf->hw.func_caps.num_vfs) {
6795                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
6796                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
6797                 pf->num_req_vfs = min_t(int,
6798                                         pf->hw.func_caps.num_vfs,
6799                                         I40E_MAX_VF_COUNT);
6800         }
6801 #endif /* CONFIG_PCI_IOV */
6802         pf->eeprom_version = 0xDEAD;
6803         pf->lan_veb = I40E_NO_VEB;
6804         pf->lan_vsi = I40E_NO_VSI;
6805
6806         /* set up queue assignment tracking */
6807         size = sizeof(struct i40e_lump_tracking)
6808                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
6809         pf->qp_pile = kzalloc(size, GFP_KERNEL);
6810         if (!pf->qp_pile) {
6811                 err = -ENOMEM;
6812                 goto sw_init_done;
6813         }
6814         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
6815         pf->qp_pile->search_hint = 0;
6816
6817         /* set up vector assignment tracking */
6818         size = sizeof(struct i40e_lump_tracking)
6819                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
6820         pf->irq_pile = kzalloc(size, GFP_KERNEL);
6821         if (!pf->irq_pile) {
6822                 kfree(pf->qp_pile);
6823                 err = -ENOMEM;
6824                 goto sw_init_done;
6825         }
6826         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
6827         pf->irq_pile->search_hint = 0;
6828
6829         mutex_init(&pf->switch_mutex);
6830
6831 sw_init_done:
6832         return err;
6833 }
6834
6835 /**
6836  * i40e_set_ntuple - set the ntuple feature flag and take action
6837  * @pf: board private structure to initialize
6838  * @features: the feature set that the stack is suggesting
6839  *
6840  * returns a bool to indicate if reset needs to happen
6841  **/
6842 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
6843 {
6844         bool need_reset = false;
6845
6846         /* Check if Flow Director n-tuple support was enabled or disabled.  If
6847          * the state changed, we need to reset.
6848          */
6849         if (features & NETIF_F_NTUPLE) {
6850                 /* Enable filters and mark for reset */
6851                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6852                         need_reset = true;
6853                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
6854         } else {
6855                 /* turn off filters, mark for reset and clear SW filter list */
6856                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
6857                         need_reset = true;
6858                         i40e_fdir_filter_exit(pf);
6859                 }
6860                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6861                 /* if ATR was disabled it can be re-enabled. */
6862                 if (!(pf->flags & I40E_FLAG_FD_ATR_ENABLED))
6863                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6864         }
6865         return need_reset;
6866 }
6867
6868 /**
6869  * i40e_set_features - set the netdev feature flags
6870  * @netdev: ptr to the netdev being adjusted
6871  * @features: the feature set that the stack is suggesting
6872  **/
6873 static int i40e_set_features(struct net_device *netdev,
6874                              netdev_features_t features)
6875 {
6876         struct i40e_netdev_priv *np = netdev_priv(netdev);
6877         struct i40e_vsi *vsi = np->vsi;
6878         struct i40e_pf *pf = vsi->back;
6879         bool need_reset;
6880
6881         if (features & NETIF_F_HW_VLAN_CTAG_RX)
6882                 i40e_vlan_stripping_enable(vsi);
6883         else
6884                 i40e_vlan_stripping_disable(vsi);
6885
6886         need_reset = i40e_set_ntuple(pf, features);
6887
6888         if (need_reset)
6889                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
6890
6891         return 0;
6892 }
6893
6894 #ifdef CONFIG_I40E_VXLAN
6895 /**
6896  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
6897  * @pf: board private structure
6898  * @port: The UDP port to look up
6899  *
6900  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
6901  **/
6902 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
6903 {
6904         u8 i;
6905
6906         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6907                 if (pf->vxlan_ports[i] == port)
6908                         return i;
6909         }
6910
6911         return i;
6912 }
6913
6914 /**
6915  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
6916  * @netdev: This physical port's netdev
6917  * @sa_family: Socket Family that VXLAN is notifying us about
6918  * @port: New UDP port number that VXLAN started listening to
6919  **/
6920 static void i40e_add_vxlan_port(struct net_device *netdev,
6921                                 sa_family_t sa_family, __be16 port)
6922 {
6923         struct i40e_netdev_priv *np = netdev_priv(netdev);
6924         struct i40e_vsi *vsi = np->vsi;
6925         struct i40e_pf *pf = vsi->back;
6926         u8 next_idx;
6927         u8 idx;
6928
6929         if (sa_family == AF_INET6)
6930                 return;
6931
6932         idx = i40e_get_vxlan_port_idx(pf, port);
6933
6934         /* Check if port already exists */
6935         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6936                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
6937                 return;
6938         }
6939
6940         /* Now check if there is space to add the new port */
6941         next_idx = i40e_get_vxlan_port_idx(pf, 0);
6942
6943         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6944                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
6945                             ntohs(port));
6946                 return;
6947         }
6948
6949         /* New port: add it and mark its index in the bitmap */
6950         pf->vxlan_ports[next_idx] = port;
6951         pf->pending_vxlan_bitmap |= (1 << next_idx);
6952
6953         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6954 }
6955
6956 /**
6957  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
6958  * @netdev: This physical port's netdev
6959  * @sa_family: Socket Family that VXLAN is notifying us about
6960  * @port: UDP port number that VXLAN stopped listening to
6961  **/
6962 static void i40e_del_vxlan_port(struct net_device *netdev,
6963                                 sa_family_t sa_family, __be16 port)
6964 {
6965         struct i40e_netdev_priv *np = netdev_priv(netdev);
6966         struct i40e_vsi *vsi = np->vsi;
6967         struct i40e_pf *pf = vsi->back;
6968         u8 idx;
6969
6970         if (sa_family == AF_INET6)
6971                 return;
6972
6973         idx = i40e_get_vxlan_port_idx(pf, port);
6974
6975         /* Check if port already exists */
6976         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
6977                 /* if port exists, set it to 0 (mark for deletion)
6978                  * and make it pending
6979                  */
6980                 pf->vxlan_ports[idx] = 0;
6981
6982                 pf->pending_vxlan_bitmap |= (1 << idx);
6983
6984                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
6985         } else {
6986                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
6987                             ntohs(port));
6988         }
6989 }
6990
6991 #endif
6992 #ifdef HAVE_FDB_OPS
6993 #ifdef USE_CONST_DEV_UC_CHAR
6994 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
6995                             struct net_device *dev,
6996                             const unsigned char *addr,
6997                             u16 flags)
6998 #else
6999 static int i40e_ndo_fdb_add(struct ndmsg *ndm,
7000                             struct net_device *dev,
7001                             unsigned char *addr,
7002                             u16 flags)
7003 #endif
7004 {
7005         struct i40e_netdev_priv *np = netdev_priv(dev);
7006         struct i40e_pf *pf = np->vsi->back;
7007         int err = 0;
7008
7009         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
7010                 return -EOPNOTSUPP;
7011
7012         /* Hardware does not support aging addresses so if a
7013          * ndm_state is given only allow permanent addresses
7014          */
7015         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
7016                 netdev_info(dev, "FDB only supports static addresses\n");
7017                 return -EINVAL;
7018         }
7019
7020         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
7021                 err = dev_uc_add_excl(dev, addr);
7022         else if (is_multicast_ether_addr(addr))
7023                 err = dev_mc_add_excl(dev, addr);
7024         else
7025                 err = -EINVAL;
7026
7027         /* Only return duplicate errors if NLM_F_EXCL is set */
7028         if (err == -EEXIST && !(flags & NLM_F_EXCL))
7029                 err = 0;
7030
7031         return err;
7032 }
7033
7034 #ifndef USE_DEFAULT_FDB_DEL_DUMP
7035 #ifdef USE_CONST_DEV_UC_CHAR
7036 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
7037                             struct net_device *dev,
7038                             const unsigned char *addr)
7039 #else
7040 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
7041                             struct net_device *dev,
7042                             unsigned char *addr)
7043 #endif
7044 {
7045         struct i40e_netdev_priv *np = netdev_priv(dev);
7046         struct i40e_pf *pf = np->vsi->back;
7047         int err = -EOPNOTSUPP;
7048
7049         if (ndm->ndm_state & NUD_PERMANENT) {
7050                 netdev_info(dev, "FDB only supports static addresses\n");
7051                 return -EINVAL;
7052         }
7053
7054         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
7055                 if (is_unicast_ether_addr(addr))
7056                         err = dev_uc_del(dev, addr);
7057                 else if (is_multicast_ether_addr(addr))
7058                         err = dev_mc_del(dev, addr);
7059                 else
7060                         err = -EINVAL;
7061         }
7062
7063         return err;
7064 }
7065
7066 static int i40e_ndo_fdb_dump(struct sk_buff *skb,
7067                              struct netlink_callback *cb,
7068                              struct net_device *dev,
7069                              int idx)
7070 {
7071         struct i40e_netdev_priv *np = netdev_priv(dev);
7072         struct i40e_pf *pf = np->vsi->back;
7073
7074         if (pf->flags & I40E_FLAG_SRIOV_ENABLED)
7075                 idx = ndo_dflt_fdb_dump(skb, cb, dev, idx);
7076
7077         return idx;
7078 }
7079
7080 #endif /* USE_DEFAULT_FDB_DEL_DUMP */
7081 #endif /* HAVE_FDB_OPS */
7082 static const struct net_device_ops i40e_netdev_ops = {
7083         .ndo_open               = i40e_open,
7084         .ndo_stop               = i40e_close,
7085         .ndo_start_xmit         = i40e_lan_xmit_frame,
7086         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
7087         .ndo_set_rx_mode        = i40e_set_rx_mode,
7088         .ndo_validate_addr      = eth_validate_addr,
7089         .ndo_set_mac_address    = i40e_set_mac,
7090         .ndo_change_mtu         = i40e_change_mtu,
7091         .ndo_do_ioctl           = i40e_ioctl,
7092         .ndo_tx_timeout         = i40e_tx_timeout,
7093         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
7094         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
7095 #ifdef CONFIG_NET_POLL_CONTROLLER
7096         .ndo_poll_controller    = i40e_netpoll,
7097 #endif
7098         .ndo_setup_tc           = i40e_setup_tc,
7099         .ndo_set_features       = i40e_set_features,
7100         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
7101         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
7102         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
7103         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
7104         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
7105         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofck,
7106 #ifdef CONFIG_I40E_VXLAN
7107         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
7108         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
7109 #endif
7110 #ifdef HAVE_FDB_OPS
7111         .ndo_fdb_add            = i40e_ndo_fdb_add,
7112 #ifndef USE_DEFAULT_FDB_DEL_DUMP
7113         .ndo_fdb_del            = i40e_ndo_fdb_del,
7114         .ndo_fdb_dump           = i40e_ndo_fdb_dump,
7115 #endif
7116 #endif
7117 };
7118
7119 /**
7120  * i40e_config_netdev - Setup the netdev flags
7121  * @vsi: the VSI being configured
7122  *
7123  * Returns 0 on success, negative value on failure
7124  **/
7125 static int i40e_config_netdev(struct i40e_vsi *vsi)
7126 {
7127         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
7128         struct i40e_pf *pf = vsi->back;
7129         struct i40e_hw *hw = &pf->hw;
7130         struct i40e_netdev_priv *np;
7131         struct net_device *netdev;
7132         u8 mac_addr[ETH_ALEN];
7133         int etherdev_size;
7134
7135         etherdev_size = sizeof(struct i40e_netdev_priv);
7136         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
7137         if (!netdev)
7138                 return -ENOMEM;
7139
7140         vsi->netdev = netdev;
7141         np = netdev_priv(netdev);
7142         np->vsi = vsi;
7143
7144         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
7145                                   NETIF_F_GSO_UDP_TUNNEL |
7146                                   NETIF_F_TSO;
7147
7148         netdev->features = NETIF_F_SG                  |
7149                            NETIF_F_IP_CSUM             |
7150                            NETIF_F_SCTP_CSUM           |
7151                            NETIF_F_HIGHDMA             |
7152                            NETIF_F_GSO_UDP_TUNNEL      |
7153                            NETIF_F_HW_VLAN_CTAG_TX     |
7154                            NETIF_F_HW_VLAN_CTAG_RX     |
7155                            NETIF_F_HW_VLAN_CTAG_FILTER |
7156                            NETIF_F_IPV6_CSUM           |
7157                            NETIF_F_TSO                 |
7158                            NETIF_F_TSO_ECN             |
7159                            NETIF_F_TSO6                |
7160                            NETIF_F_RXCSUM              |
7161                            NETIF_F_RXHASH              |
7162                            0;
7163
7164         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
7165                 netdev->features |= NETIF_F_NTUPLE;
7166
7167         /* copy netdev features into list of user selectable features */
7168         netdev->hw_features |= netdev->features;
7169
7170         if (vsi->type == I40E_VSI_MAIN) {
7171                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
7172                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
7173                 /* The following two steps are necessary to prevent reception
7174                  * of tagged packets - by default the NVM loads a MAC-VLAN
7175                  * filter that will accept any tagged packet.  This is to
7176                  * prevent that during normal operations until a specific
7177                  * VLAN tag filter has been set.
7178                  */
7179                 i40e_rm_default_mac_filter(vsi, mac_addr);
7180                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, true);
7181         } else {
7182                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
7183                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
7184                          pf->vsi[pf->lan_vsi]->netdev->name);
7185                 random_ether_addr(mac_addr);
7186                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
7187         }
7188         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
7189
7190         ether_addr_copy(netdev->dev_addr, mac_addr);
7191         ether_addr_copy(netdev->perm_addr, mac_addr);
7192         /* vlan gets same features (except vlan offload)
7193          * after any tweaks for specific VSI types
7194          */
7195         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
7196                                                      NETIF_F_HW_VLAN_CTAG_RX |
7197                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
7198         netdev->priv_flags |= IFF_UNICAST_FLT;
7199         netdev->priv_flags |= IFF_SUPP_NOFCS;
7200         /* Setup netdev TC information */
7201         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
7202
7203         netdev->netdev_ops = &i40e_netdev_ops;
7204         netdev->watchdog_timeo = 5 * HZ;
7205         i40e_set_ethtool_ops(netdev);
7206
7207         return 0;
7208 }
7209
7210 /**
7211  * i40e_vsi_delete - Delete a VSI from the switch
7212  * @vsi: the VSI being removed
7213  *
7214  * Returns 0 on success, negative value on failure
7215  **/
7216 static void i40e_vsi_delete(struct i40e_vsi *vsi)
7217 {
7218         /* remove default VSI is not allowed */
7219         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
7220                 return;
7221
7222         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
7223 }
7224
7225 /**
7226  * i40e_add_vsi - Add a VSI to the switch
7227  * @vsi: the VSI being configured
7228  *
7229  * This initializes a VSI context depending on the VSI type to be added and
7230  * passes it down to the add_vsi aq command.
7231  **/
7232 static int i40e_add_vsi(struct i40e_vsi *vsi)
7233 {
7234         int ret = -ENODEV;
7235         struct i40e_mac_filter *f, *ftmp;
7236         struct i40e_pf *pf = vsi->back;
7237         struct i40e_hw *hw = &pf->hw;
7238         struct i40e_vsi_context ctxt;
7239         u8 enabled_tc = 0x1; /* TC0 enabled */
7240         int f_count = 0;
7241
7242         memset(&ctxt, 0, sizeof(ctxt));
7243         switch (vsi->type) {
7244         case I40E_VSI_MAIN:
7245                 /* The PF's main VSI is already setup as part of the
7246                  * device initialization, so we'll not bother with
7247                  * the add_vsi call, but we will retrieve the current
7248                  * VSI context.
7249                  */
7250                 ctxt.seid = pf->main_vsi_seid;
7251                 ctxt.pf_num = pf->hw.pf_id;
7252                 ctxt.vf_num = 0;
7253                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
7254                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7255                 if (ret) {
7256                         dev_info(&pf->pdev->dev,
7257                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
7258                                  ret, pf->hw.aq.asq_last_status);
7259                         return -ENOENT;
7260                 }
7261                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7262                 vsi->info.valid_sections = 0;
7263
7264                 vsi->seid = ctxt.seid;
7265                 vsi->id = ctxt.vsi_number;
7266
7267                 enabled_tc = i40e_pf_get_tc_map(pf);
7268
7269                 /* MFP mode setup queue map and update VSI */
7270                 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
7271                         memset(&ctxt, 0, sizeof(ctxt));
7272                         ctxt.seid = pf->main_vsi_seid;
7273                         ctxt.pf_num = pf->hw.pf_id;
7274                         ctxt.vf_num = 0;
7275                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
7276                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
7277                         if (ret) {
7278                                 dev_info(&pf->pdev->dev,
7279                                          "update vsi failed, aq_err=%d\n",
7280                                          pf->hw.aq.asq_last_status);
7281                                 ret = -ENOENT;
7282                                 goto err;
7283                         }
7284                         /* update the local VSI info queue map */
7285                         i40e_vsi_update_queue_map(vsi, &ctxt);
7286                         vsi->info.valid_sections = 0;
7287                 } else {
7288                         /* Default/Main VSI is only enabled for TC0
7289                          * reconfigure it to enable all TCs that are
7290                          * available on the port in SFP mode.
7291                          */
7292                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
7293                         if (ret) {
7294                                 dev_info(&pf->pdev->dev,
7295                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
7296                                          enabled_tc, ret,
7297                                          pf->hw.aq.asq_last_status);
7298                                 ret = -ENOENT;
7299                         }
7300                 }
7301                 break;
7302
7303         case I40E_VSI_FDIR:
7304                 ctxt.pf_num = hw->pf_id;
7305                 ctxt.vf_num = 0;
7306                 ctxt.uplink_seid = vsi->uplink_seid;
7307                 ctxt.connection_type = 0x1;     /* regular data port */
7308                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7309                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7310                 break;
7311
7312         case I40E_VSI_VMDQ2:
7313                 ctxt.pf_num = hw->pf_id;
7314                 ctxt.vf_num = 0;
7315                 ctxt.uplink_seid = vsi->uplink_seid;
7316                 ctxt.connection_type = 0x1;     /* regular data port */
7317                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
7318
7319                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7320
7321                 /* This VSI is connected to VEB so the switch_id
7322                  * should be set to zero by default.
7323                  */
7324                 ctxt.info.switch_id = 0;
7325                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
7326                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7327
7328                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7329                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7330                 break;
7331
7332         case I40E_VSI_SRIOV:
7333                 ctxt.pf_num = hw->pf_id;
7334                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
7335                 ctxt.uplink_seid = vsi->uplink_seid;
7336                 ctxt.connection_type = 0x1;     /* regular data port */
7337                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
7338
7339                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7340
7341                 /* This VSI is connected to VEB so the switch_id
7342                  * should be set to zero by default.
7343                  */
7344                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7345
7346                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
7347                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
7348                 if (pf->vf[vsi->vf_id].spoofchk) {
7349                         ctxt.info.valid_sections |=
7350                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
7351                         ctxt.info.sec_flags |=
7352                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
7353                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
7354                 }
7355                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7356                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7357                 break;
7358
7359         default:
7360                 return -ENODEV;
7361         }
7362
7363         if (vsi->type != I40E_VSI_MAIN) {
7364                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
7365                 if (ret) {
7366                         dev_info(&vsi->back->pdev->dev,
7367                                  "add vsi failed, aq_err=%d\n",
7368                                  vsi->back->hw.aq.asq_last_status);
7369                         ret = -ENOENT;
7370                         goto err;
7371                 }
7372                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7373                 vsi->info.valid_sections = 0;
7374                 vsi->seid = ctxt.seid;
7375                 vsi->id = ctxt.vsi_number;
7376         }
7377
7378         /* If macvlan filters already exist, force them to get loaded */
7379         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
7380                 f->changed = true;
7381                 f_count++;
7382
7383                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
7384                         i40e_aq_mac_address_write(&vsi->back->hw,
7385                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
7386                                                   f->macaddr, NULL);
7387                 }
7388         }
7389         if (f_count) {
7390                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
7391                 pf->flags |= I40E_FLAG_FILTER_SYNC;
7392         }
7393
7394         /* Update VSI BW information */
7395         ret = i40e_vsi_get_bw_info(vsi);
7396         if (ret) {
7397                 dev_info(&pf->pdev->dev,
7398                          "couldn't get vsi bw info, err %d, aq_err %d\n",
7399                          ret, pf->hw.aq.asq_last_status);
7400                 /* VSI is already added so not tearing that up */
7401                 ret = 0;
7402         }
7403
7404 err:
7405         return ret;
7406 }
7407
7408 /**
7409  * i40e_vsi_release - Delete a VSI and free its resources
7410  * @vsi: the VSI being removed
7411  *
7412  * Returns 0 on success or < 0 on error
7413  **/
7414 int i40e_vsi_release(struct i40e_vsi *vsi)
7415 {
7416         struct i40e_mac_filter *f, *ftmp;
7417         struct i40e_veb *veb = NULL;
7418         struct i40e_pf *pf;
7419         u16 uplink_seid;
7420         int i, n;
7421
7422         pf = vsi->back;
7423
7424         /* release of a VEB-owner or last VSI is not allowed */
7425         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
7426                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
7427                          vsi->seid, vsi->uplink_seid);
7428                 return -ENODEV;
7429         }
7430         if (vsi == pf->vsi[pf->lan_vsi] &&
7431             !test_bit(__I40E_DOWN, &pf->state)) {
7432                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
7433                 return -ENODEV;
7434         }
7435
7436         uplink_seid = vsi->uplink_seid;
7437         if (vsi->type != I40E_VSI_SRIOV) {
7438                 if (vsi->netdev_registered) {
7439                         vsi->netdev_registered = false;
7440                         if (vsi->netdev) {
7441                                 /* results in a call to i40e_close() */
7442                                 unregister_netdev(vsi->netdev);
7443                         }
7444                 } else {
7445                         i40e_vsi_close(vsi);
7446                 }
7447                 i40e_vsi_disable_irq(vsi);
7448         }
7449
7450         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
7451                 i40e_del_filter(vsi, f->macaddr, f->vlan,
7452                                 f->is_vf, f->is_netdev);
7453         i40e_sync_vsi_filters(vsi);
7454
7455         i40e_vsi_delete(vsi);
7456         i40e_vsi_free_q_vectors(vsi);
7457         if (vsi->netdev) {
7458                 free_netdev(vsi->netdev);
7459                 vsi->netdev = NULL;
7460         }
7461         i40e_vsi_clear_rings(vsi);
7462         i40e_vsi_clear(vsi);
7463
7464         /* If this was the last thing on the VEB, except for the
7465          * controlling VSI, remove the VEB, which puts the controlling
7466          * VSI onto the next level down in the switch.
7467          *
7468          * Well, okay, there's one more exception here: don't remove
7469          * the orphan VEBs yet.  We'll wait for an explicit remove request
7470          * from up the network stack.
7471          */
7472         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
7473                 if (pf->vsi[i] &&
7474                     pf->vsi[i]->uplink_seid == uplink_seid &&
7475                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7476                         n++;      /* count the VSIs */
7477                 }
7478         }
7479         for (i = 0; i < I40E_MAX_VEB; i++) {
7480                 if (!pf->veb[i])
7481                         continue;
7482                 if (pf->veb[i]->uplink_seid == uplink_seid)
7483                         n++;     /* count the VEBs */
7484                 if (pf->veb[i]->seid == uplink_seid)
7485                         veb = pf->veb[i];
7486         }
7487         if (n == 0 && veb && veb->uplink_seid != 0)
7488                 i40e_veb_release(veb);
7489
7490         return 0;
7491 }
7492
7493 /**
7494  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
7495  * @vsi: ptr to the VSI
7496  *
7497  * This should only be called after i40e_vsi_mem_alloc() which allocates the
7498  * corresponding SW VSI structure and initializes num_queue_pairs for the
7499  * newly allocated VSI.
7500  *
7501  * Returns 0 on success or negative on failure
7502  **/
7503 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
7504 {
7505         int ret = -ENOENT;
7506         struct i40e_pf *pf = vsi->back;
7507
7508         if (vsi->q_vectors[0]) {
7509                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
7510                          vsi->seid);
7511                 return -EEXIST;
7512         }
7513
7514         if (vsi->base_vector) {
7515                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
7516                          vsi->seid, vsi->base_vector);
7517                 return -EEXIST;
7518         }
7519
7520         ret = i40e_vsi_alloc_q_vectors(vsi);
7521         if (ret) {
7522                 dev_info(&pf->pdev->dev,
7523                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
7524                          vsi->num_q_vectors, vsi->seid, ret);
7525                 vsi->num_q_vectors = 0;
7526                 goto vector_setup_out;
7527         }
7528
7529         if (vsi->num_q_vectors)
7530                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
7531                                                  vsi->num_q_vectors, vsi->idx);
7532         if (vsi->base_vector < 0) {
7533                 dev_info(&pf->pdev->dev,
7534                          "failed to get queue tracking for VSI %d, err=%d\n",
7535                          vsi->seid, vsi->base_vector);
7536                 i40e_vsi_free_q_vectors(vsi);
7537                 ret = -ENOENT;
7538                 goto vector_setup_out;
7539         }
7540
7541 vector_setup_out:
7542         return ret;
7543 }
7544
7545 /**
7546  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
7547  * @vsi: pointer to the vsi.
7548  *
7549  * This re-allocates a vsi's queue resources.
7550  *
7551  * Returns pointer to the successfully allocated and configured VSI sw struct
7552  * on success, otherwise returns NULL on failure.
7553  **/
7554 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
7555 {
7556         struct i40e_pf *pf = vsi->back;
7557         u8 enabled_tc;
7558         int ret;
7559
7560         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7561         i40e_vsi_clear_rings(vsi);
7562
7563         i40e_vsi_free_arrays(vsi, false);
7564         i40e_set_num_rings_in_vsi(vsi);
7565         ret = i40e_vsi_alloc_arrays(vsi, false);
7566         if (ret)
7567                 goto err_vsi;
7568
7569         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
7570         if (ret < 0) {
7571                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7572                          vsi->seid, ret);
7573                 goto err_vsi;
7574         }
7575         vsi->base_queue = ret;
7576
7577         /* Update the FW view of the VSI. Force a reset of TC and queue
7578          * layout configurations.
7579          */
7580         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
7581         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
7582         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
7583         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
7584
7585         /* assign it some queues */
7586         ret = i40e_alloc_rings(vsi);
7587         if (ret)
7588                 goto err_rings;
7589
7590         /* map all of the rings to the q_vectors */
7591         i40e_vsi_map_rings_to_vectors(vsi);
7592         return vsi;
7593
7594 err_rings:
7595         i40e_vsi_free_q_vectors(vsi);
7596         if (vsi->netdev_registered) {
7597                 vsi->netdev_registered = false;
7598                 unregister_netdev(vsi->netdev);
7599                 free_netdev(vsi->netdev);
7600                 vsi->netdev = NULL;
7601         }
7602         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
7603 err_vsi:
7604         i40e_vsi_clear(vsi);
7605         return NULL;
7606 }
7607
7608 /**
7609  * i40e_vsi_setup - Set up a VSI by a given type
7610  * @pf: board private structure
7611  * @type: VSI type
7612  * @uplink_seid: the switch element to link to
7613  * @param1: usage depends upon VSI type. For VF types, indicates VF id
7614  *
7615  * This allocates the sw VSI structure and its queue resources, then add a VSI
7616  * to the identified VEB.
7617  *
7618  * Returns pointer to the successfully allocated and configure VSI sw struct on
7619  * success, otherwise returns NULL on failure.
7620  **/
7621 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
7622                                 u16 uplink_seid, u32 param1)
7623 {
7624         struct i40e_vsi *vsi = NULL;
7625         struct i40e_veb *veb = NULL;
7626         int ret, i;
7627         int v_idx;
7628
7629         /* The requested uplink_seid must be either
7630          *     - the PF's port seid
7631          *              no VEB is needed because this is the PF
7632          *              or this is a Flow Director special case VSI
7633          *     - seid of an existing VEB
7634          *     - seid of a VSI that owns an existing VEB
7635          *     - seid of a VSI that doesn't own a VEB
7636          *              a new VEB is created and the VSI becomes the owner
7637          *     - seid of the PF VSI, which is what creates the first VEB
7638          *              this is a special case of the previous
7639          *
7640          * Find which uplink_seid we were given and create a new VEB if needed
7641          */
7642         for (i = 0; i < I40E_MAX_VEB; i++) {
7643                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
7644                         veb = pf->veb[i];
7645                         break;
7646                 }
7647         }
7648
7649         if (!veb && uplink_seid != pf->mac_seid) {
7650
7651                 for (i = 0; i < pf->num_alloc_vsi; i++) {
7652                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
7653                                 vsi = pf->vsi[i];
7654                                 break;
7655                         }
7656                 }
7657                 if (!vsi) {
7658                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
7659                                  uplink_seid);
7660                         return NULL;
7661                 }
7662
7663                 if (vsi->uplink_seid == pf->mac_seid)
7664                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
7665                                              vsi->tc_config.enabled_tc);
7666                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
7667                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
7668                                              vsi->tc_config.enabled_tc);
7669
7670                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7671                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7672                                 veb = pf->veb[i];
7673                 }
7674                 if (!veb) {
7675                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
7676                         return NULL;
7677                 }
7678
7679                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
7680                 uplink_seid = veb->seid;
7681         }
7682
7683         /* get vsi sw struct */
7684         v_idx = i40e_vsi_mem_alloc(pf, type);
7685         if (v_idx < 0)
7686                 goto err_alloc;
7687         vsi = pf->vsi[v_idx];
7688         if (!vsi)
7689                 goto err_alloc;
7690         vsi->type = type;
7691         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
7692
7693         if (type == I40E_VSI_MAIN)
7694                 pf->lan_vsi = v_idx;
7695         else if (type == I40E_VSI_SRIOV)
7696                 vsi->vf_id = param1;
7697         /* assign it some queues */
7698         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
7699                                 vsi->idx);
7700         if (ret < 0) {
7701                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7702                          vsi->seid, ret);
7703                 goto err_vsi;
7704         }
7705         vsi->base_queue = ret;
7706
7707         /* get a VSI from the hardware */
7708         vsi->uplink_seid = uplink_seid;
7709         ret = i40e_add_vsi(vsi);
7710         if (ret)
7711                 goto err_vsi;
7712
7713         switch (vsi->type) {
7714         /* setup the netdev if needed */
7715         case I40E_VSI_MAIN:
7716         case I40E_VSI_VMDQ2:
7717                 ret = i40e_config_netdev(vsi);
7718                 if (ret)
7719                         goto err_netdev;
7720                 ret = register_netdev(vsi->netdev);
7721                 if (ret)
7722                         goto err_netdev;
7723                 vsi->netdev_registered = true;
7724                 netif_carrier_off(vsi->netdev);
7725 #ifdef CONFIG_I40E_DCB
7726                 /* Setup DCB netlink interface */
7727                 i40e_dcbnl_setup(vsi);
7728 #endif /* CONFIG_I40E_DCB */
7729                 /* fall through */
7730
7731         case I40E_VSI_FDIR:
7732                 /* set up vectors and rings if needed */
7733                 ret = i40e_vsi_setup_vectors(vsi);
7734                 if (ret)
7735                         goto err_msix;
7736
7737                 ret = i40e_alloc_rings(vsi);
7738                 if (ret)
7739                         goto err_rings;
7740
7741                 /* map all of the rings to the q_vectors */
7742                 i40e_vsi_map_rings_to_vectors(vsi);
7743
7744                 i40e_vsi_reset_stats(vsi);
7745                 break;
7746
7747         default:
7748                 /* no netdev or rings for the other VSI types */
7749                 break;
7750         }
7751
7752         return vsi;
7753
7754 err_rings:
7755         i40e_vsi_free_q_vectors(vsi);
7756 err_msix:
7757         if (vsi->netdev_registered) {
7758                 vsi->netdev_registered = false;
7759                 unregister_netdev(vsi->netdev);
7760                 free_netdev(vsi->netdev);
7761                 vsi->netdev = NULL;
7762         }
7763 err_netdev:
7764         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
7765 err_vsi:
7766         i40e_vsi_clear(vsi);
7767 err_alloc:
7768         return NULL;
7769 }
7770
7771 /**
7772  * i40e_veb_get_bw_info - Query VEB BW information
7773  * @veb: the veb to query
7774  *
7775  * Query the Tx scheduler BW configuration data for given VEB
7776  **/
7777 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
7778 {
7779         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
7780         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
7781         struct i40e_pf *pf = veb->pf;
7782         struct i40e_hw *hw = &pf->hw;
7783         u32 tc_bw_max;
7784         int ret = 0;
7785         int i;
7786
7787         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
7788                                                   &bw_data, NULL);
7789         if (ret) {
7790                 dev_info(&pf->pdev->dev,
7791                          "query veb bw config failed, aq_err=%d\n",
7792                          hw->aq.asq_last_status);
7793                 goto out;
7794         }
7795
7796         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
7797                                                    &ets_data, NULL);
7798         if (ret) {
7799                 dev_info(&pf->pdev->dev,
7800                          "query veb bw ets config failed, aq_err=%d\n",
7801                          hw->aq.asq_last_status);
7802                 goto out;
7803         }
7804
7805         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
7806         veb->bw_max_quanta = ets_data.tc_bw_max;
7807         veb->is_abs_credits = bw_data.absolute_credits_enable;
7808         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
7809                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
7810         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
7811                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
7812                 veb->bw_tc_limit_credits[i] =
7813                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
7814                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
7815         }
7816
7817 out:
7818         return ret;
7819 }
7820
7821 /**
7822  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
7823  * @pf: board private structure
7824  *
7825  * On error: returns error code (negative)
7826  * On success: returns vsi index in PF (positive)
7827  **/
7828 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
7829 {
7830         int ret = -ENOENT;
7831         struct i40e_veb *veb;
7832         int i;
7833
7834         /* Need to protect the allocation of switch elements at the PF level */
7835         mutex_lock(&pf->switch_mutex);
7836
7837         /* VEB list may be fragmented if VEB creation/destruction has
7838          * been happening.  We can afford to do a quick scan to look
7839          * for any free slots in the list.
7840          *
7841          * find next empty veb slot, looping back around if necessary
7842          */
7843         i = 0;
7844         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
7845                 i++;
7846         if (i >= I40E_MAX_VEB) {
7847                 ret = -ENOMEM;
7848                 goto err_alloc_veb;  /* out of VEB slots! */
7849         }
7850
7851         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
7852         if (!veb) {
7853                 ret = -ENOMEM;
7854                 goto err_alloc_veb;
7855         }
7856         veb->pf = pf;
7857         veb->idx = i;
7858         veb->enabled_tc = 1;
7859
7860         pf->veb[i] = veb;
7861         ret = i;
7862 err_alloc_veb:
7863         mutex_unlock(&pf->switch_mutex);
7864         return ret;
7865 }
7866
7867 /**
7868  * i40e_switch_branch_release - Delete a branch of the switch tree
7869  * @branch: where to start deleting
7870  *
7871  * This uses recursion to find the tips of the branch to be
7872  * removed, deleting until we get back to and can delete this VEB.
7873  **/
7874 static void i40e_switch_branch_release(struct i40e_veb *branch)
7875 {
7876         struct i40e_pf *pf = branch->pf;
7877         u16 branch_seid = branch->seid;
7878         u16 veb_idx = branch->idx;
7879         int i;
7880
7881         /* release any VEBs on this VEB - RECURSION */
7882         for (i = 0; i < I40E_MAX_VEB; i++) {
7883                 if (!pf->veb[i])
7884                         continue;
7885                 if (pf->veb[i]->uplink_seid == branch->seid)
7886                         i40e_switch_branch_release(pf->veb[i]);
7887         }
7888
7889         /* Release the VSIs on this VEB, but not the owner VSI.
7890          *
7891          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
7892          *       the VEB itself, so don't use (*branch) after this loop.
7893          */
7894         for (i = 0; i < pf->num_alloc_vsi; i++) {
7895                 if (!pf->vsi[i])
7896                         continue;
7897                 if (pf->vsi[i]->uplink_seid == branch_seid &&
7898                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7899                         i40e_vsi_release(pf->vsi[i]);
7900                 }
7901         }
7902
7903         /* There's one corner case where the VEB might not have been
7904          * removed, so double check it here and remove it if needed.
7905          * This case happens if the veb was created from the debugfs
7906          * commands and no VSIs were added to it.
7907          */
7908         if (pf->veb[veb_idx])
7909                 i40e_veb_release(pf->veb[veb_idx]);
7910 }
7911
7912 /**
7913  * i40e_veb_clear - remove veb struct
7914  * @veb: the veb to remove
7915  **/
7916 static void i40e_veb_clear(struct i40e_veb *veb)
7917 {
7918         if (!veb)
7919                 return;
7920
7921         if (veb->pf) {
7922                 struct i40e_pf *pf = veb->pf;
7923
7924                 mutex_lock(&pf->switch_mutex);
7925                 if (pf->veb[veb->idx] == veb)
7926                         pf->veb[veb->idx] = NULL;
7927                 mutex_unlock(&pf->switch_mutex);
7928         }
7929
7930         kfree(veb);
7931 }
7932
7933 /**
7934  * i40e_veb_release - Delete a VEB and free its resources
7935  * @veb: the VEB being removed
7936  **/
7937 void i40e_veb_release(struct i40e_veb *veb)
7938 {
7939         struct i40e_vsi *vsi = NULL;
7940         struct i40e_pf *pf;
7941         int i, n = 0;
7942
7943         pf = veb->pf;
7944
7945         /* find the remaining VSI and check for extras */
7946         for (i = 0; i < pf->num_alloc_vsi; i++) {
7947                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
7948                         n++;
7949                         vsi = pf->vsi[i];
7950                 }
7951         }
7952         if (n != 1) {
7953                 dev_info(&pf->pdev->dev,
7954                          "can't remove VEB %d with %d VSIs left\n",
7955                          veb->seid, n);
7956                 return;
7957         }
7958
7959         /* move the remaining VSI to uplink veb */
7960         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
7961         if (veb->uplink_seid) {
7962                 vsi->uplink_seid = veb->uplink_seid;
7963                 if (veb->uplink_seid == pf->mac_seid)
7964                         vsi->veb_idx = I40E_NO_VEB;
7965                 else
7966                         vsi->veb_idx = veb->veb_idx;
7967         } else {
7968                 /* floating VEB */
7969                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
7970                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
7971         }
7972
7973         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
7974         i40e_veb_clear(veb);
7975 }
7976
7977 /**
7978  * i40e_add_veb - create the VEB in the switch
7979  * @veb: the VEB to be instantiated
7980  * @vsi: the controlling VSI
7981  **/
7982 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
7983 {
7984         bool is_default = false;
7985         bool is_cloud = false;
7986         int ret;
7987
7988         /* get a VEB from the hardware */
7989         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
7990                               veb->enabled_tc, is_default,
7991                               is_cloud, &veb->seid, NULL);
7992         if (ret) {
7993                 dev_info(&veb->pf->pdev->dev,
7994                          "couldn't add VEB, err %d, aq_err %d\n",
7995                          ret, veb->pf->hw.aq.asq_last_status);
7996                 return -EPERM;
7997         }
7998
7999         /* get statistics counter */
8000         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
8001                                          &veb->stats_idx, NULL, NULL, NULL);
8002         if (ret) {
8003                 dev_info(&veb->pf->pdev->dev,
8004                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
8005                          ret, veb->pf->hw.aq.asq_last_status);
8006                 return -EPERM;
8007         }
8008         ret = i40e_veb_get_bw_info(veb);
8009         if (ret) {
8010                 dev_info(&veb->pf->pdev->dev,
8011                          "couldn't get VEB bw info, err %d, aq_err %d\n",
8012                          ret, veb->pf->hw.aq.asq_last_status);
8013                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
8014                 return -ENOENT;
8015         }
8016
8017         vsi->uplink_seid = veb->seid;
8018         vsi->veb_idx = veb->idx;
8019         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8020
8021         return 0;
8022 }
8023
8024 /**
8025  * i40e_veb_setup - Set up a VEB
8026  * @pf: board private structure
8027  * @flags: VEB setup flags
8028  * @uplink_seid: the switch element to link to
8029  * @vsi_seid: the initial VSI seid
8030  * @enabled_tc: Enabled TC bit-map
8031  *
8032  * This allocates the sw VEB structure and links it into the switch
8033  * It is possible and legal for this to be a duplicate of an already
8034  * existing VEB.  It is also possible for both uplink and vsi seids
8035  * to be zero, in order to create a floating VEB.
8036  *
8037  * Returns pointer to the successfully allocated VEB sw struct on
8038  * success, otherwise returns NULL on failure.
8039  **/
8040 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
8041                                 u16 uplink_seid, u16 vsi_seid,
8042                                 u8 enabled_tc)
8043 {
8044         struct i40e_veb *veb, *uplink_veb = NULL;
8045         int vsi_idx, veb_idx;
8046         int ret;
8047
8048         /* if one seid is 0, the other must be 0 to create a floating relay */
8049         if ((uplink_seid == 0 || vsi_seid == 0) &&
8050             (uplink_seid + vsi_seid != 0)) {
8051                 dev_info(&pf->pdev->dev,
8052                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
8053                          uplink_seid, vsi_seid);
8054                 return NULL;
8055         }
8056
8057         /* make sure there is such a vsi and uplink */
8058         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
8059                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
8060                         break;
8061         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
8062                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
8063                          vsi_seid);
8064                 return NULL;
8065         }
8066
8067         if (uplink_seid && uplink_seid != pf->mac_seid) {
8068                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
8069                         if (pf->veb[veb_idx] &&
8070                             pf->veb[veb_idx]->seid == uplink_seid) {
8071                                 uplink_veb = pf->veb[veb_idx];
8072                                 break;
8073                         }
8074                 }
8075                 if (!uplink_veb) {
8076                         dev_info(&pf->pdev->dev,
8077                                  "uplink seid %d not found\n", uplink_seid);
8078                         return NULL;
8079                 }
8080         }
8081
8082         /* get veb sw struct */
8083         veb_idx = i40e_veb_mem_alloc(pf);
8084         if (veb_idx < 0)
8085                 goto err_alloc;
8086         veb = pf->veb[veb_idx];
8087         veb->flags = flags;
8088         veb->uplink_seid = uplink_seid;
8089         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
8090         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
8091
8092         /* create the VEB in the switch */
8093         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
8094         if (ret)
8095                 goto err_veb;
8096         if (vsi_idx == pf->lan_vsi)
8097                 pf->lan_veb = veb->idx;
8098
8099         return veb;
8100
8101 err_veb:
8102         i40e_veb_clear(veb);
8103 err_alloc:
8104         return NULL;
8105 }
8106
8107 /**
8108  * i40e_setup_pf_switch_element - set pf vars based on switch type
8109  * @pf: board private structure
8110  * @ele: element we are building info from
8111  * @num_reported: total number of elements
8112  * @printconfig: should we print the contents
8113  *
8114  * helper function to assist in extracting a few useful SEID values.
8115  **/
8116 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
8117                                 struct i40e_aqc_switch_config_element_resp *ele,
8118                                 u16 num_reported, bool printconfig)
8119 {
8120         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
8121         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
8122         u8 element_type = ele->element_type;
8123         u16 seid = le16_to_cpu(ele->seid);
8124
8125         if (printconfig)
8126                 dev_info(&pf->pdev->dev,
8127                          "type=%d seid=%d uplink=%d downlink=%d\n",
8128                          element_type, seid, uplink_seid, downlink_seid);
8129
8130         switch (element_type) {
8131         case I40E_SWITCH_ELEMENT_TYPE_MAC:
8132                 pf->mac_seid = seid;
8133                 break;
8134         case I40E_SWITCH_ELEMENT_TYPE_VEB:
8135                 /* Main VEB? */
8136                 if (uplink_seid != pf->mac_seid)
8137                         break;
8138                 if (pf->lan_veb == I40E_NO_VEB) {
8139                         int v;
8140
8141                         /* find existing or else empty VEB */
8142                         for (v = 0; v < I40E_MAX_VEB; v++) {
8143                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
8144                                         pf->lan_veb = v;
8145                                         break;
8146                                 }
8147                         }
8148                         if (pf->lan_veb == I40E_NO_VEB) {
8149                                 v = i40e_veb_mem_alloc(pf);
8150                                 if (v < 0)
8151                                         break;
8152                                 pf->lan_veb = v;
8153                         }
8154                 }
8155
8156                 pf->veb[pf->lan_veb]->seid = seid;
8157                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
8158                 pf->veb[pf->lan_veb]->pf = pf;
8159                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
8160                 break;
8161         case I40E_SWITCH_ELEMENT_TYPE_VSI:
8162                 if (num_reported != 1)
8163                         break;
8164                 /* This is immediately after a reset so we can assume this is
8165                  * the PF's VSI
8166                  */
8167                 pf->mac_seid = uplink_seid;
8168                 pf->pf_seid = downlink_seid;
8169                 pf->main_vsi_seid = seid;
8170                 if (printconfig)
8171                         dev_info(&pf->pdev->dev,
8172                                  "pf_seid=%d main_vsi_seid=%d\n",
8173                                  pf->pf_seid, pf->main_vsi_seid);
8174                 break;
8175         case I40E_SWITCH_ELEMENT_TYPE_PF:
8176         case I40E_SWITCH_ELEMENT_TYPE_VF:
8177         case I40E_SWITCH_ELEMENT_TYPE_EMP:
8178         case I40E_SWITCH_ELEMENT_TYPE_BMC:
8179         case I40E_SWITCH_ELEMENT_TYPE_PE:
8180         case I40E_SWITCH_ELEMENT_TYPE_PA:
8181                 /* ignore these for now */
8182                 break;
8183         default:
8184                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
8185                          element_type, seid);
8186                 break;
8187         }
8188 }
8189
8190 /**
8191  * i40e_fetch_switch_configuration - Get switch config from firmware
8192  * @pf: board private structure
8193  * @printconfig: should we print the contents
8194  *
8195  * Get the current switch configuration from the device and
8196  * extract a few useful SEID values.
8197  **/
8198 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
8199 {
8200         struct i40e_aqc_get_switch_config_resp *sw_config;
8201         u16 next_seid = 0;
8202         int ret = 0;
8203         u8 *aq_buf;
8204         int i;
8205
8206         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
8207         if (!aq_buf)
8208                 return -ENOMEM;
8209
8210         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
8211         do {
8212                 u16 num_reported, num_total;
8213
8214                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
8215                                                 I40E_AQ_LARGE_BUF,
8216                                                 &next_seid, NULL);
8217                 if (ret) {
8218                         dev_info(&pf->pdev->dev,
8219                                  "get switch config failed %d aq_err=%x\n",
8220                                  ret, pf->hw.aq.asq_last_status);
8221                         kfree(aq_buf);
8222                         return -ENOENT;
8223                 }
8224
8225                 num_reported = le16_to_cpu(sw_config->header.num_reported);
8226                 num_total = le16_to_cpu(sw_config->header.num_total);
8227
8228                 if (printconfig)
8229                         dev_info(&pf->pdev->dev,
8230                                  "header: %d reported %d total\n",
8231                                  num_reported, num_total);
8232
8233                 for (i = 0; i < num_reported; i++) {
8234                         struct i40e_aqc_switch_config_element_resp *ele =
8235                                 &sw_config->element[i];
8236
8237                         i40e_setup_pf_switch_element(pf, ele, num_reported,
8238                                                      printconfig);
8239                 }
8240         } while (next_seid != 0);
8241
8242         kfree(aq_buf);
8243         return ret;
8244 }
8245
8246 /**
8247  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
8248  * @pf: board private structure
8249  * @reinit: if the Main VSI needs to re-initialized.
8250  *
8251  * Returns 0 on success, negative value on failure
8252  **/
8253 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
8254 {
8255         u32 rxfc = 0, txfc = 0, rxfc_reg;
8256         int ret;
8257
8258         /* find out what's out there already */
8259         ret = i40e_fetch_switch_configuration(pf, false);
8260         if (ret) {
8261                 dev_info(&pf->pdev->dev,
8262                          "couldn't fetch switch config, err %d, aq_err %d\n",
8263                          ret, pf->hw.aq.asq_last_status);
8264                 return ret;
8265         }
8266         i40e_pf_reset_stats(pf);
8267
8268         /* first time setup */
8269         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
8270                 struct i40e_vsi *vsi = NULL;
8271                 u16 uplink_seid;
8272
8273                 /* Set up the PF VSI associated with the PF's main VSI
8274                  * that is already in the HW switch
8275                  */
8276                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
8277                         uplink_seid = pf->veb[pf->lan_veb]->seid;
8278                 else
8279                         uplink_seid = pf->mac_seid;
8280                 if (pf->lan_vsi == I40E_NO_VSI)
8281                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
8282                 else if (reinit)
8283                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
8284                 if (!vsi) {
8285                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
8286                         i40e_fdir_teardown(pf);
8287                         return -EAGAIN;
8288                 }
8289         } else {
8290                 /* force a reset of TC and queue layout configurations */
8291                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8292                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8293                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8294                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8295         }
8296         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
8297
8298         i40e_fdir_sb_setup(pf);
8299
8300         /* Setup static PF queue filter control settings */
8301         ret = i40e_setup_pf_filter_control(pf);
8302         if (ret) {
8303                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
8304                          ret);
8305                 /* Failure here should not stop continuing other steps */
8306         }
8307
8308         /* enable RSS in the HW, even for only one queue, as the stack can use
8309          * the hash
8310          */
8311         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
8312                 i40e_config_rss(pf);
8313
8314         /* fill in link information and enable LSE reporting */
8315         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
8316         i40e_link_event(pf);
8317
8318         /* Initialize user-specific link properties */
8319         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8320                                   I40E_AQ_AN_COMPLETED) ? true : false);
8321         /* requested_mode is set in probe or by ethtool */
8322         if (!pf->fc_autoneg_status)
8323                 goto no_autoneg;
8324
8325         if ((pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX) &&
8326             (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX))
8327                 pf->hw.fc.current_mode = I40E_FC_FULL;
8328         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX)
8329                 pf->hw.fc.current_mode = I40E_FC_TX_PAUSE;
8330         else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX)
8331                 pf->hw.fc.current_mode = I40E_FC_RX_PAUSE;
8332         else
8333                 pf->hw.fc.current_mode = I40E_FC_NONE;
8334
8335         /* sync the flow control settings with the auto-neg values */
8336         switch (pf->hw.fc.current_mode) {
8337         case I40E_FC_FULL:
8338                 txfc = 1;
8339                 rxfc = 1;
8340                 break;
8341         case I40E_FC_TX_PAUSE:
8342                 txfc = 1;
8343                 rxfc = 0;
8344                 break;
8345         case I40E_FC_RX_PAUSE:
8346                 txfc = 0;
8347                 rxfc = 1;
8348                 break;
8349         case I40E_FC_NONE:
8350         case I40E_FC_DEFAULT:
8351                 txfc = 0;
8352                 rxfc = 0;
8353                 break;
8354         case I40E_FC_PFC:
8355                 /* TBD */
8356                 break;
8357         /* no default case, we have to handle all possibilities here */
8358         }
8359
8360         wr32(&pf->hw, I40E_PRTDCB_FCCFG, txfc << I40E_PRTDCB_FCCFG_TFCE_SHIFT);
8361
8362         rxfc_reg = rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
8363                    ~I40E_PRTDCB_MFLCN_RFCE_MASK;
8364         rxfc_reg |= (rxfc << I40E_PRTDCB_MFLCN_RFCE_SHIFT);
8365
8366         wr32(&pf->hw, I40E_PRTDCB_MFLCN, rxfc_reg);
8367
8368         goto fc_complete;
8369
8370 no_autoneg:
8371         /* disable L2 flow control, user can turn it on if they wish */
8372         wr32(&pf->hw, I40E_PRTDCB_FCCFG, 0);
8373         wr32(&pf->hw, I40E_PRTDCB_MFLCN, rd32(&pf->hw, I40E_PRTDCB_MFLCN) &
8374                                          ~I40E_PRTDCB_MFLCN_RFCE_MASK);
8375
8376 fc_complete:
8377         i40e_ptp_init(pf);
8378
8379         return ret;
8380 }
8381
8382 /**
8383  * i40e_determine_queue_usage - Work out queue distribution
8384  * @pf: board private structure
8385  **/
8386 static void i40e_determine_queue_usage(struct i40e_pf *pf)
8387 {
8388         int queues_left;
8389
8390         pf->num_lan_qps = 0;
8391
8392         /* Find the max queues to be put into basic use.  We'll always be
8393          * using TC0, whether or not DCB is running, and TC0 will get the
8394          * big RSS set.
8395          */
8396         queues_left = pf->hw.func_caps.num_tx_qp;
8397
8398         if ((queues_left == 1) ||
8399             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
8400                 /* one qp for PF, no queues for anything else */
8401                 queues_left = 0;
8402                 pf->rss_size = pf->num_lan_qps = 1;
8403
8404                 /* make sure all the fancies are disabled */
8405                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8406                                I40E_FLAG_FD_SB_ENABLED  |
8407                                I40E_FLAG_FD_ATR_ENABLED |
8408                                I40E_FLAG_DCB_CAPABLE    |
8409                                I40E_FLAG_SRIOV_ENABLED  |
8410                                I40E_FLAG_VMDQ_ENABLED);
8411         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
8412                                   I40E_FLAG_FD_SB_ENABLED |
8413                                   I40E_FLAG_FD_ATR_ENABLED |
8414                                   I40E_FLAG_DCB_CAPABLE))) {
8415                 /* one qp for PF */
8416                 pf->rss_size = pf->num_lan_qps = 1;
8417                 queues_left -= pf->num_lan_qps;
8418
8419                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8420                                I40E_FLAG_FD_SB_ENABLED  |
8421                                I40E_FLAG_FD_ATR_ENABLED |
8422                                I40E_FLAG_DCB_ENABLED    |
8423                                I40E_FLAG_VMDQ_ENABLED);
8424         } else {
8425                 /* Not enough queues for all TCs */
8426                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
8427                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
8428                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
8429                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
8430                 }
8431                 pf->num_lan_qps = pf->rss_size_max;
8432                 queues_left -= pf->num_lan_qps;
8433         }
8434
8435         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8436                 if (queues_left > 1) {
8437                         queues_left -= 1; /* save 1 queue for FD */
8438                 } else {
8439                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8440                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
8441                 }
8442         }
8443
8444         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8445             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
8446                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
8447                                         (queues_left / pf->num_vf_qps));
8448                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
8449         }
8450
8451         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
8452             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
8453                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
8454                                           (queues_left / pf->num_vmdq_qps));
8455                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
8456         }
8457
8458         pf->queues_left = queues_left;
8459 }
8460
8461 /**
8462  * i40e_setup_pf_filter_control - Setup PF static filter control
8463  * @pf: PF to be setup
8464  *
8465  * i40e_setup_pf_filter_control sets up a pf's initial filter control
8466  * settings. If PE/FCoE are enabled then it will also set the per PF
8467  * based filter sizes required for them. It also enables Flow director,
8468  * ethertype and macvlan type filter settings for the pf.
8469  *
8470  * Returns 0 on success, negative on failure
8471  **/
8472 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
8473 {
8474         struct i40e_filter_control_settings *settings = &pf->filter_settings;
8475
8476         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
8477
8478         /* Flow Director is enabled */
8479         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
8480                 settings->enable_fdir = true;
8481
8482         /* Ethtype and MACVLAN filters enabled for PF */
8483         settings->enable_ethtype = true;
8484         settings->enable_macvlan = true;
8485
8486         if (i40e_set_filter_control(&pf->hw, settings))
8487                 return -ENOENT;
8488
8489         return 0;
8490 }
8491
8492 #define INFO_STRING_LEN 255
8493 static void i40e_print_features(struct i40e_pf *pf)
8494 {
8495         struct i40e_hw *hw = &pf->hw;
8496         char *buf, *string;
8497
8498         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
8499         if (!string) {
8500                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
8501                 return;
8502         }
8503
8504         buf = string;
8505
8506         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
8507 #ifdef CONFIG_PCI_IOV
8508         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
8509 #endif
8510         buf += sprintf(buf, "VSIs: %d QP: %d ", pf->hw.func_caps.num_vsis,
8511                        pf->vsi[pf->lan_vsi]->num_queue_pairs);
8512
8513         if (pf->flags & I40E_FLAG_RSS_ENABLED)
8514                 buf += sprintf(buf, "RSS ");
8515         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
8516                 buf += sprintf(buf, "FD_ATR ");
8517         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8518                 buf += sprintf(buf, "FD_SB ");
8519                 buf += sprintf(buf, "NTUPLE ");
8520         }
8521         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
8522                 buf += sprintf(buf, "DCB ");
8523         if (pf->flags & I40E_FLAG_PTP)
8524                 buf += sprintf(buf, "PTP ");
8525
8526         BUG_ON(buf > (string + INFO_STRING_LEN));
8527         dev_info(&pf->pdev->dev, "%s\n", string);
8528         kfree(string);
8529 }
8530
8531 /**
8532  * i40e_probe - Device initialization routine
8533  * @pdev: PCI device information struct
8534  * @ent: entry in i40e_pci_tbl
8535  *
8536  * i40e_probe initializes a pf identified by a pci_dev structure.
8537  * The OS initialization, configuring of the pf private structure,
8538  * and a hardware reset occur.
8539  *
8540  * Returns 0 on success, negative on failure
8541  **/
8542 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8543 {
8544         struct i40e_pf *pf;
8545         struct i40e_hw *hw;
8546         static u16 pfs_found;
8547         u16 link_status;
8548         int err = 0;
8549         u32 len;
8550         u32 i;
8551
8552         err = pci_enable_device_mem(pdev);
8553         if (err)
8554                 return err;
8555
8556         /* set up for high or low dma */
8557         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
8558         if (err) {
8559                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
8560                 if (err) {
8561                         dev_err(&pdev->dev,
8562                                 "DMA configuration failed: 0x%x\n", err);
8563                         goto err_dma;
8564                 }
8565         }
8566
8567         /* set up pci connections */
8568         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
8569                                            IORESOURCE_MEM), i40e_driver_name);
8570         if (err) {
8571                 dev_info(&pdev->dev,
8572                          "pci_request_selected_regions failed %d\n", err);
8573                 goto err_pci_reg;
8574         }
8575
8576         pci_enable_pcie_error_reporting(pdev);
8577         pci_set_master(pdev);
8578
8579         /* Now that we have a PCI connection, we need to do the
8580          * low level device setup.  This is primarily setting up
8581          * the Admin Queue structures and then querying for the
8582          * device's current profile information.
8583          */
8584         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
8585         if (!pf) {
8586                 err = -ENOMEM;
8587                 goto err_pf_alloc;
8588         }
8589         pf->next_vsi = 0;
8590         pf->pdev = pdev;
8591         set_bit(__I40E_DOWN, &pf->state);
8592
8593         hw = &pf->hw;
8594         hw->back = pf;
8595         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
8596                               pci_resource_len(pdev, 0));
8597         if (!hw->hw_addr) {
8598                 err = -EIO;
8599                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
8600                          (unsigned int)pci_resource_start(pdev, 0),
8601                          (unsigned int)pci_resource_len(pdev, 0), err);
8602                 goto err_ioremap;
8603         }
8604         hw->vendor_id = pdev->vendor;
8605         hw->device_id = pdev->device;
8606         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
8607         hw->subsystem_vendor_id = pdev->subsystem_vendor;
8608         hw->subsystem_device_id = pdev->subsystem_device;
8609         hw->bus.device = PCI_SLOT(pdev->devfn);
8610         hw->bus.func = PCI_FUNC(pdev->devfn);
8611         pf->instance = pfs_found;
8612
8613         /* do a special CORER for clearing PXE mode once at init */
8614         if (hw->revision_id == 0 &&
8615             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
8616                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
8617                 i40e_flush(hw);
8618                 msleep(200);
8619                 pf->corer_count++;
8620
8621                 i40e_clear_pxe_mode(hw);
8622         }
8623
8624         /* Reset here to make sure all is clean and to define PF 'n' */
8625         err = i40e_pf_reset(hw);
8626         if (err) {
8627                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
8628                 goto err_pf_reset;
8629         }
8630         pf->pfr_count++;
8631
8632         hw->aq.num_arq_entries = I40E_AQ_LEN;
8633         hw->aq.num_asq_entries = I40E_AQ_LEN;
8634         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
8635         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
8636         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
8637         snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
8638                  "%s-pf%d:misc",
8639                  dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
8640
8641         err = i40e_init_shared_code(hw);
8642         if (err) {
8643                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
8644                 goto err_pf_reset;
8645         }
8646
8647         /* set up a default setting for link flow control */
8648         pf->hw.fc.requested_mode = I40E_FC_NONE;
8649
8650         err = i40e_init_adminq(hw);
8651         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
8652         if (err) {
8653                 dev_info(&pdev->dev,
8654                          "init_adminq failed: %d expecting API %02x.%02x\n",
8655                          err,
8656                          I40E_FW_API_VERSION_MAJOR, I40E_FW_API_VERSION_MINOR);
8657                 goto err_pf_reset;
8658         }
8659
8660         if (hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
8661                 dev_info(&pdev->dev,
8662                          "Note: FW API version %02x.%02x newer than expected %02x.%02x, recommend driver update.\n",
8663                          hw->aq.api_maj_ver, hw->aq.api_min_ver,
8664                          I40E_FW_API_VERSION_MAJOR, I40E_FW_API_VERSION_MINOR);
8665
8666         if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
8667             hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR-1))
8668                 dev_info(&pdev->dev,
8669                          "Note: FW API version %02x.%02x older than expected %02x.%02x, recommend nvm update.\n",
8670                          hw->aq.api_maj_ver, hw->aq.api_min_ver,
8671                          I40E_FW_API_VERSION_MAJOR, I40E_FW_API_VERSION_MINOR);
8672
8673
8674         i40e_verify_eeprom(pf);
8675
8676         /* Rev 0 hardware was never productized */
8677         if (hw->revision_id < 1)
8678                 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");
8679
8680         i40e_clear_pxe_mode(hw);
8681         err = i40e_get_capabilities(pf);
8682         if (err)
8683                 goto err_adminq_setup;
8684
8685         err = i40e_sw_init(pf);
8686         if (err) {
8687                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
8688                 goto err_sw_init;
8689         }
8690
8691         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
8692                                 hw->func_caps.num_rx_qp,
8693                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
8694         if (err) {
8695                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
8696                 goto err_init_lan_hmc;
8697         }
8698
8699         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
8700         if (err) {
8701                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
8702                 err = -ENOENT;
8703                 goto err_configure_lan_hmc;
8704         }
8705
8706         i40e_get_mac_addr(hw, hw->mac.addr);
8707         if (!is_valid_ether_addr(hw->mac.addr)) {
8708                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
8709                 err = -EIO;
8710                 goto err_mac_addr;
8711         }
8712         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
8713         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
8714
8715         pci_set_drvdata(pdev, pf);
8716         pci_save_state(pdev);
8717 #ifdef CONFIG_I40E_DCB
8718         err = i40e_init_pf_dcb(pf);
8719         if (err) {
8720                 dev_info(&pdev->dev, "init_pf_dcb failed: %d\n", err);
8721                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
8722                 /* Continue without DCB enabled */
8723         }
8724 #endif /* CONFIG_I40E_DCB */
8725
8726         /* set up periodic task facility */
8727         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
8728         pf->service_timer_period = HZ;
8729
8730         INIT_WORK(&pf->service_task, i40e_service_task);
8731         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
8732         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
8733         pf->link_check_timeout = jiffies;
8734
8735         /* WoL defaults to disabled */
8736         pf->wol_en = false;
8737         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
8738
8739         /* set up the main switch operations */
8740         i40e_determine_queue_usage(pf);
8741         i40e_init_interrupt_scheme(pf);
8742
8743         /* The number of VSIs reported by the FW is the minimum guaranteed
8744          * to us; HW supports far more and we share the remaining pool with
8745          * the other PFs. We allocate space for more than the guarantee with
8746          * the understanding that we might not get them all later.
8747          */
8748         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
8749                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
8750         else
8751                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
8752
8753         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
8754         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
8755         pf->vsi = kzalloc(len, GFP_KERNEL);
8756         if (!pf->vsi) {
8757                 err = -ENOMEM;
8758                 goto err_switch_setup;
8759         }
8760
8761         err = i40e_setup_pf_switch(pf, false);
8762         if (err) {
8763                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
8764                 goto err_vsis;
8765         }
8766         /* if FDIR VSI was set up, start it now */
8767         for (i = 0; i < pf->num_alloc_vsi; i++) {
8768                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
8769                         i40e_vsi_open(pf->vsi[i]);
8770                         break;
8771                 }
8772         }
8773
8774         /* The main driver is (mostly) up and happy. We need to set this state
8775          * before setting up the misc vector or we get a race and the vector
8776          * ends up disabled forever.
8777          */
8778         clear_bit(__I40E_DOWN, &pf->state);
8779
8780         /* In case of MSIX we are going to setup the misc vector right here
8781          * to handle admin queue events etc. In case of legacy and MSI
8782          * the misc functionality and queue processing is combined in
8783          * the same vector and that gets setup at open.
8784          */
8785         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8786                 err = i40e_setup_misc_vector(pf);
8787                 if (err) {
8788                         dev_info(&pdev->dev,
8789                                  "setup of misc vector failed: %d\n", err);
8790                         goto err_vsis;
8791                 }
8792         }
8793
8794 #ifdef CONFIG_PCI_IOV
8795         /* prep for VF support */
8796         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8797             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
8798             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
8799                 u32 val;
8800
8801                 /* disable link interrupts for VFs */
8802                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
8803                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
8804                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
8805                 i40e_flush(hw);
8806
8807                 if (pci_num_vf(pdev)) {
8808                         dev_info(&pdev->dev,
8809                                  "Active VFs found, allocating resources.\n");
8810                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
8811                         if (err)
8812                                 dev_info(&pdev->dev,
8813                                          "Error %d allocating resources for existing VFs\n",
8814                                          err);
8815                 }
8816         }
8817 #endif /* CONFIG_PCI_IOV */
8818
8819         pfs_found++;
8820
8821         i40e_dbg_pf_init(pf);
8822
8823         /* tell the firmware that we're starting */
8824         i40e_send_version(pf);
8825
8826         /* since everything's happy, start the service_task timer */
8827         mod_timer(&pf->service_timer,
8828                   round_jiffies(jiffies + pf->service_timer_period));
8829
8830         /* Get the negotiated link width and speed from PCI config space */
8831         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
8832
8833         i40e_set_pci_config_data(hw, link_status);
8834
8835         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
8836                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
8837                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
8838                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
8839                  "Unknown"),
8840                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
8841                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
8842                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
8843                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
8844                  "Unknown"));
8845
8846         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
8847             hw->bus.speed < i40e_bus_speed_8000) {
8848                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
8849                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
8850         }
8851
8852         /* print a string summarizing features */
8853         i40e_print_features(pf);
8854
8855         return 0;
8856
8857         /* Unwind what we've done if something failed in the setup */
8858 err_vsis:
8859         set_bit(__I40E_DOWN, &pf->state);
8860         i40e_clear_interrupt_scheme(pf);
8861         kfree(pf->vsi);
8862 err_switch_setup:
8863         i40e_reset_interrupt_capability(pf);
8864         del_timer_sync(&pf->service_timer);
8865 err_mac_addr:
8866 err_configure_lan_hmc:
8867         (void)i40e_shutdown_lan_hmc(hw);
8868 err_init_lan_hmc:
8869         kfree(pf->qp_pile);
8870         kfree(pf->irq_pile);
8871 err_sw_init:
8872 err_adminq_setup:
8873         (void)i40e_shutdown_adminq(hw);
8874 err_pf_reset:
8875         iounmap(hw->hw_addr);
8876 err_ioremap:
8877         kfree(pf);
8878 err_pf_alloc:
8879         pci_disable_pcie_error_reporting(pdev);
8880         pci_release_selected_regions(pdev,
8881                                      pci_select_bars(pdev, IORESOURCE_MEM));
8882 err_pci_reg:
8883 err_dma:
8884         pci_disable_device(pdev);
8885         return err;
8886 }
8887
8888 /**
8889  * i40e_remove - Device removal routine
8890  * @pdev: PCI device information struct
8891  *
8892  * i40e_remove is called by the PCI subsystem to alert the driver
8893  * that is should release a PCI device.  This could be caused by a
8894  * Hot-Plug event, or because the driver is going to be removed from
8895  * memory.
8896  **/
8897 static void i40e_remove(struct pci_dev *pdev)
8898 {
8899         struct i40e_pf *pf = pci_get_drvdata(pdev);
8900         i40e_status ret_code;
8901         int i;
8902
8903         i40e_dbg_pf_exit(pf);
8904
8905         i40e_ptp_stop(pf);
8906
8907         /* no more scheduling of any task */
8908         set_bit(__I40E_DOWN, &pf->state);
8909         del_timer_sync(&pf->service_timer);
8910         cancel_work_sync(&pf->service_task);
8911
8912         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
8913                 i40e_free_vfs(pf);
8914                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
8915         }
8916
8917         i40e_fdir_teardown(pf);
8918
8919         /* If there is a switch structure or any orphans, remove them.
8920          * This will leave only the PF's VSI remaining.
8921          */
8922         for (i = 0; i < I40E_MAX_VEB; i++) {
8923                 if (!pf->veb[i])
8924                         continue;
8925
8926                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
8927                     pf->veb[i]->uplink_seid == 0)
8928                         i40e_switch_branch_release(pf->veb[i]);
8929         }
8930
8931         /* Now we can shutdown the PF's VSI, just before we kill
8932          * adminq and hmc.
8933          */
8934         if (pf->vsi[pf->lan_vsi])
8935                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
8936
8937         i40e_stop_misc_vector(pf);
8938         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8939                 synchronize_irq(pf->msix_entries[0].vector);
8940                 free_irq(pf->msix_entries[0].vector, pf);
8941         }
8942
8943         /* shutdown and destroy the HMC */
8944         if (pf->hw.hmc.hmc_obj) {
8945                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
8946                 if (ret_code)
8947                         dev_warn(&pdev->dev,
8948                                  "Failed to destroy the HMC resources: %d\n",
8949                                  ret_code);
8950         }
8951
8952         /* shutdown the adminq */
8953         ret_code = i40e_shutdown_adminq(&pf->hw);
8954         if (ret_code)
8955                 dev_warn(&pdev->dev,
8956                          "Failed to destroy the Admin Queue resources: %d\n",
8957                          ret_code);
8958
8959         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
8960         i40e_clear_interrupt_scheme(pf);
8961         for (i = 0; i < pf->num_alloc_vsi; i++) {
8962                 if (pf->vsi[i]) {
8963                         i40e_vsi_clear_rings(pf->vsi[i]);
8964                         i40e_vsi_clear(pf->vsi[i]);
8965                         pf->vsi[i] = NULL;
8966                 }
8967         }
8968
8969         for (i = 0; i < I40E_MAX_VEB; i++) {
8970                 kfree(pf->veb[i]);
8971                 pf->veb[i] = NULL;
8972         }
8973
8974         kfree(pf->qp_pile);
8975         kfree(pf->irq_pile);
8976         kfree(pf->vsi);
8977
8978         iounmap(pf->hw.hw_addr);
8979         kfree(pf);
8980         pci_release_selected_regions(pdev,
8981                                      pci_select_bars(pdev, IORESOURCE_MEM));
8982
8983         pci_disable_pcie_error_reporting(pdev);
8984         pci_disable_device(pdev);
8985 }
8986
8987 /**
8988  * i40e_pci_error_detected - warning that something funky happened in PCI land
8989  * @pdev: PCI device information struct
8990  *
8991  * Called to warn that something happened and the error handling steps
8992  * are in progress.  Allows the driver to quiesce things, be ready for
8993  * remediation.
8994  **/
8995 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
8996                                                 enum pci_channel_state error)
8997 {
8998         struct i40e_pf *pf = pci_get_drvdata(pdev);
8999
9000         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
9001
9002         /* shutdown all operations */
9003         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
9004                 rtnl_lock();
9005                 i40e_prep_for_reset(pf);
9006                 rtnl_unlock();
9007         }
9008
9009         /* Request a slot reset */
9010         return PCI_ERS_RESULT_NEED_RESET;
9011 }
9012
9013 /**
9014  * i40e_pci_error_slot_reset - a PCI slot reset just happened
9015  * @pdev: PCI device information struct
9016  *
9017  * Called to find if the driver can work with the device now that
9018  * the pci slot has been reset.  If a basic connection seems good
9019  * (registers are readable and have sane content) then return a
9020  * happy little PCI_ERS_RESULT_xxx.
9021  **/
9022 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
9023 {
9024         struct i40e_pf *pf = pci_get_drvdata(pdev);
9025         pci_ers_result_t result;
9026         int err;
9027         u32 reg;
9028
9029         dev_info(&pdev->dev, "%s\n", __func__);
9030         if (pci_enable_device_mem(pdev)) {
9031                 dev_info(&pdev->dev,
9032                          "Cannot re-enable PCI device after reset.\n");
9033                 result = PCI_ERS_RESULT_DISCONNECT;
9034         } else {
9035                 pci_set_master(pdev);
9036                 pci_restore_state(pdev);
9037                 pci_save_state(pdev);
9038                 pci_wake_from_d3(pdev, false);
9039
9040                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
9041                 if (reg == 0)
9042                         result = PCI_ERS_RESULT_RECOVERED;
9043                 else
9044                         result = PCI_ERS_RESULT_DISCONNECT;
9045         }
9046
9047         err = pci_cleanup_aer_uncorrect_error_status(pdev);
9048         if (err) {
9049                 dev_info(&pdev->dev,
9050                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
9051                          err);
9052                 /* non-fatal, continue */
9053         }
9054
9055         return result;
9056 }
9057
9058 /**
9059  * i40e_pci_error_resume - restart operations after PCI error recovery
9060  * @pdev: PCI device information struct
9061  *
9062  * Called to allow the driver to bring things back up after PCI error
9063  * and/or reset recovery has finished.
9064  **/
9065 static void i40e_pci_error_resume(struct pci_dev *pdev)
9066 {
9067         struct i40e_pf *pf = pci_get_drvdata(pdev);
9068
9069         dev_info(&pdev->dev, "%s\n", __func__);
9070         if (test_bit(__I40E_SUSPENDED, &pf->state))
9071                 return;
9072
9073         rtnl_lock();
9074         i40e_handle_reset_warning(pf);
9075         rtnl_lock();
9076 }
9077
9078 /**
9079  * i40e_shutdown - PCI callback for shutting down
9080  * @pdev: PCI device information struct
9081  **/
9082 static void i40e_shutdown(struct pci_dev *pdev)
9083 {
9084         struct i40e_pf *pf = pci_get_drvdata(pdev);
9085         struct i40e_hw *hw = &pf->hw;
9086
9087         set_bit(__I40E_SUSPENDED, &pf->state);
9088         set_bit(__I40E_DOWN, &pf->state);
9089         rtnl_lock();
9090         i40e_prep_for_reset(pf);
9091         rtnl_unlock();
9092
9093         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9094         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9095
9096         if (system_state == SYSTEM_POWER_OFF) {
9097                 pci_wake_from_d3(pdev, pf->wol_en);
9098                 pci_set_power_state(pdev, PCI_D3hot);
9099         }
9100 }
9101
9102 #ifdef CONFIG_PM
9103 /**
9104  * i40e_suspend - PCI callback for moving to D3
9105  * @pdev: PCI device information struct
9106  **/
9107 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
9108 {
9109         struct i40e_pf *pf = pci_get_drvdata(pdev);
9110         struct i40e_hw *hw = &pf->hw;
9111
9112         set_bit(__I40E_SUSPENDED, &pf->state);
9113         set_bit(__I40E_DOWN, &pf->state);
9114         rtnl_lock();
9115         i40e_prep_for_reset(pf);
9116         rtnl_unlock();
9117
9118         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9119         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9120
9121         pci_wake_from_d3(pdev, pf->wol_en);
9122         pci_set_power_state(pdev, PCI_D3hot);
9123
9124         return 0;
9125 }
9126
9127 /**
9128  * i40e_resume - PCI callback for waking up from D3
9129  * @pdev: PCI device information struct
9130  **/
9131 static int i40e_resume(struct pci_dev *pdev)
9132 {
9133         struct i40e_pf *pf = pci_get_drvdata(pdev);
9134         u32 err;
9135
9136         pci_set_power_state(pdev, PCI_D0);
9137         pci_restore_state(pdev);
9138         /* pci_restore_state() clears dev->state_saves, so
9139          * call pci_save_state() again to restore it.
9140          */
9141         pci_save_state(pdev);
9142
9143         err = pci_enable_device_mem(pdev);
9144         if (err) {
9145                 dev_err(&pdev->dev,
9146                         "%s: Cannot enable PCI device from suspend\n",
9147                         __func__);
9148                 return err;
9149         }
9150         pci_set_master(pdev);
9151
9152         /* no wakeup events while running */
9153         pci_wake_from_d3(pdev, false);
9154
9155         /* handling the reset will rebuild the device state */
9156         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
9157                 clear_bit(__I40E_DOWN, &pf->state);
9158                 rtnl_lock();
9159                 i40e_reset_and_rebuild(pf, false);
9160                 rtnl_unlock();
9161         }
9162
9163         return 0;
9164 }
9165
9166 #endif
9167 static const struct pci_error_handlers i40e_err_handler = {
9168         .error_detected = i40e_pci_error_detected,
9169         .slot_reset = i40e_pci_error_slot_reset,
9170         .resume = i40e_pci_error_resume,
9171 };
9172
9173 static struct pci_driver i40e_driver = {
9174         .name     = i40e_driver_name,
9175         .id_table = i40e_pci_tbl,
9176         .probe    = i40e_probe,
9177         .remove   = i40e_remove,
9178 #ifdef CONFIG_PM
9179         .suspend  = i40e_suspend,
9180         .resume   = i40e_resume,
9181 #endif
9182         .shutdown = i40e_shutdown,
9183         .err_handler = &i40e_err_handler,
9184         .sriov_configure = i40e_pci_sriov_configure,
9185 };
9186
9187 /**
9188  * i40e_init_module - Driver registration routine
9189  *
9190  * i40e_init_module is the first routine called when the driver is
9191  * loaded. All it does is register with the PCI subsystem.
9192  **/
9193 static int __init i40e_init_module(void)
9194 {
9195         pr_info("%s: %s - version %s\n", i40e_driver_name,
9196                 i40e_driver_string, i40e_driver_version_str);
9197         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
9198         i40e_dbg_init();
9199         return pci_register_driver(&i40e_driver);
9200 }
9201 module_init(i40e_init_module);
9202
9203 /**
9204  * i40e_exit_module - Driver exit cleanup routine
9205  *
9206  * i40e_exit_module is called just before the driver is removed
9207  * from memory.
9208  **/
9209 static void __exit i40e_exit_module(void)
9210 {
9211         pci_unregister_driver(&i40e_driver);
9212         i40e_dbg_exit();
9213 }
9214 module_exit(i40e_exit_module);