drivers/net/ethernet/intel/i40e/i40e_main.c

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2015 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 1
  41 #define DRV_VERSION_MINOR 3
  42 #define DRV_VERSION_BUILD 2
  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 const struct pci_device_id 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         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  79         /* required last entry */
  80         {0, }
  81 };
  82 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  83
  84 #define I40E_MAX_VF_COUNT 128
  85 static int debug = -1;
  86 module_param(debug, int, 0);
  87 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  88
  89 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  90 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  91 MODULE_LICENSE("GPL");
  92 MODULE_VERSION(DRV_VERSION);
  93
  94 /**
  95  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  96  * @hw:   pointer to the HW structure
  97  * @mem:  ptr to mem struct to fill out
  98  * @size: size of memory requested
  99  * @alignment: what to align the allocation to
 100  **/
 101 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 102                             u64 size, u32 alignment)
 103 {
 104         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 105
 106         mem->size = ALIGN(size, alignment);
 107         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 108                                       &mem->pa, GFP_KERNEL);
 109         if (!mem->va)
 110                 return -ENOMEM;
 111
 112         return 0;
 113 }
 114
 115 /**
 116  * i40e_free_dma_mem_d - OS specific memory free for shared code
 117  * @hw:   pointer to the HW structure
 118  * @mem:  ptr to mem struct to free
 119  **/
 120 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 121 {
 122         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 123
 124         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 125         mem->va = NULL;
 126         mem->pa = 0;
 127         mem->size = 0;
 128
 129         return 0;
 130 }
 131
 132 /**
 133  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 134  * @hw:   pointer to the HW structure
 135  * @mem:  ptr to mem struct to fill out
 136  * @size: size of memory requested
 137  **/
 138 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 139                              u32 size)
 140 {
 141         mem->size = size;
 142         mem->va = kzalloc(size, GFP_KERNEL);
 143
 144         if (!mem->va)
 145                 return -ENOMEM;
 146
 147         return 0;
 148 }
 149
 150 /**
 151  * i40e_free_virt_mem_d - OS specific memory free for shared code
 152  * @hw:   pointer to the HW structure
 153  * @mem:  ptr to mem struct to free
 154  **/
 155 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 156 {
 157         /* it's ok to kfree a NULL pointer */
 158         kfree(mem->va);
 159         mem->va = NULL;
 160         mem->size = 0;
 161
 162         return 0;
 163 }
 164
 165 /**
 166  * i40e_get_lump - find a lump of free generic resource
 167  * @pf: board private structure
 168  * @pile: the pile of resource to search
 169  * @needed: the number of items needed
 170  * @id: an owner id to stick on the items assigned
 171  *
 172  * Returns the base item index of the lump, or negative for error
 173  *
 174  * The search_hint trick and lack of advanced fit-finding only work
 175  * because we're highly likely to have all the same size lump requests.
 176  * Linear search time and any fragmentation should be minimal.
 177  **/
 178 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 179                          u16 needed, u16 id)
 180 {
 181         int ret = -ENOMEM;
 182         int i, j;
 183
 184         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 185                 dev_info(&pf->pdev->dev,
 186                          "param err: pile=%p needed=%d id=0x%04x\n",
 187                          pile, needed, id);
 188                 return -EINVAL;
 189         }
 190
 191         /* start the linear search with an imperfect hint */
 192         i = pile->search_hint;
 193         while (i < pile->num_entries) {
 194                 /* skip already allocated entries */
 195                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 196                         i++;
 197                         continue;
 198                 }
 199
 200                 /* do we have enough in this lump? */
 201                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 202                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 203                                 break;
 204                 }
 205
 206                 if (j == needed) {
 207                         /* there was enough, so assign it to the requestor */
 208                         for (j = 0; j < needed; j++)
 209                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 210                         ret = i;
 211                         pile->search_hint = i + j;
 212                         break;
 213                 } else {
 214                         /* not enough, so skip over it and continue looking */
 215                         i += j;
 216                 }
 217         }
 218
 219         return ret;
 220 }
 221
 222 /**
 223  * i40e_put_lump - return a lump of generic resource
 224  * @pile: the pile of resource to search
 225  * @index: the base item index
 226  * @id: the owner id of the items assigned
 227  *
 228  * Returns the count of items in the lump
 229  **/
 230 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 231 {
 232         int valid_id = (id | I40E_PILE_VALID_BIT);
 233         int count = 0;
 234         int i;
 235
 236         if (!pile || index >= pile->num_entries)
 237                 return -EINVAL;
 238
 239         for (i = index;
 240              i < pile->num_entries && pile->list[i] == valid_id;
 241              i++) {
 242                 pile->list[i] = 0;
 243                 count++;
 244         }
 245
 246         if (count && index < pile->search_hint)
 247                 pile->search_hint = index;
 248
 249         return count;
 250 }
 251
 252 /**
 253  * i40e_find_vsi_from_id - searches for the vsi with the given id
 254  * @pf - the pf structure to search for the vsi
 255  * @id - id of the vsi it is searching for
 256  **/
 257 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 258 {
 259         int i;
 260
 261         for (i = 0; i < pf->num_alloc_vsi; i++)
 262                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 263                         return pf->vsi[i];
 264
 265         return NULL;
 266 }
 267
 268 /**
 269  * i40e_service_event_schedule - Schedule the service task to wake up
 270  * @pf: board private structure
 271  *
 272  * If not already scheduled, this puts the task into the work queue
 273  **/
 274 static void i40e_service_event_schedule(struct i40e_pf *pf)
 275 {
 276         if (!test_bit(__I40E_DOWN, &pf->state) &&
 277             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 278             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 279                 schedule_work(&pf->service_task);
 280 }
 281
 282 /**
 283  * i40e_tx_timeout - Respond to a Tx Hang
 284  * @netdev: network interface device structure
 285  *
 286  * If any port has noticed a Tx timeout, it is likely that the whole
 287  * device is munged, not just the one netdev port, so go for the full
 288  * reset.
 289  **/
 290 #ifdef I40E_FCOE
 291 void i40e_tx_timeout(struct net_device *netdev)
 292 #else
 293 static void i40e_tx_timeout(struct net_device *netdev)
 294 #endif
 295 {
 296         struct i40e_netdev_priv *np = netdev_priv(netdev);
 297         struct i40e_vsi *vsi = np->vsi;
 298         struct i40e_pf *pf = vsi->back;
 299
 300         pf->tx_timeout_count++;
 301
 302         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 303                 pf->tx_timeout_recovery_level = 1;
 304         pf->tx_timeout_last_recovery = jiffies;
 305         netdev_info(netdev, "tx_timeout recovery level %d\n",
 306                     pf->tx_timeout_recovery_level);
 307
 308         switch (pf->tx_timeout_recovery_level) {
 309         case 0:
 310                 /* disable and re-enable queues for the VSI */
 311                 if (in_interrupt()) {
 312                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 313                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 314                 } else {
 315                         i40e_vsi_reinit_locked(vsi);
 316                 }
 317                 break;
 318         case 1:
 319                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 320                 break;
 321         case 2:
 322                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 323                 break;
 324         case 3:
 325                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 326                 break;
 327         default:
 328                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 329                 set_bit(__I40E_DOWN_REQUESTED, &pf->state);
 330                 set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
 331                 break;
 332         }
 333         i40e_service_event_schedule(pf);
 334         pf->tx_timeout_recovery_level++;
 335 }
 336
 337 /**
 338  * i40e_release_rx_desc - Store the new tail and head values
 339  * @rx_ring: ring to bump
 340  * @val: new head index
 341  **/
 342 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 343 {
 344         rx_ring->next_to_use = val;
 345
 346         /* Force memory writes to complete before letting h/w
 347          * know there are new descriptors to fetch.  (Only
 348          * applicable for weak-ordered memory model archs,
 349          * such as IA-64).
 350          */
 351         wmb();
 352         writel(val, rx_ring->tail);
 353 }
 354
 355 /**
 356  * i40e_get_vsi_stats_struct - Get System Network Statistics
 357  * @vsi: the VSI we care about
 358  *
 359  * Returns the address of the device statistics structure.
 360  * The statistics are actually updated from the service task.
 361  **/
 362 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 363 {
 364         return &vsi->net_stats;
 365 }
 366
 367 /**
 368  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 369  * @netdev: network interface device structure
 370  *
 371  * Returns the address of the device statistics structure.
 372  * The statistics are actually updated from the service task.
 373  **/
 374 #ifdef I40E_FCOE
 375 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 376                                              struct net_device *netdev,
 377                                              struct rtnl_link_stats64 *stats)
 378 #else
 379 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 380                                              struct net_device *netdev,
 381                                              struct rtnl_link_stats64 *stats)
 382 #endif
 383 {
 384         struct i40e_netdev_priv *np = netdev_priv(netdev);
 385         struct i40e_ring *tx_ring, *rx_ring;
 386         struct i40e_vsi *vsi = np->vsi;
 387         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 388         int i;
 389
 390         if (test_bit(__I40E_DOWN, &vsi->state))
 391                 return stats;
 392
 393         if (!vsi->tx_rings)
 394                 return stats;
 395
 396         rcu_read_lock();
 397         for (i = 0; i < vsi->num_queue_pairs; i++) {
 398                 u64 bytes, packets;
 399                 unsigned int start;
 400
 401                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 402                 if (!tx_ring)
 403                         continue;
 404
 405                 do {
 406                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 407                         packets = tx_ring->stats.packets;
 408                         bytes   = tx_ring->stats.bytes;
 409                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 410
 411                 stats->tx_packets += packets;
 412                 stats->tx_bytes   += bytes;
 413                 rx_ring = &tx_ring[1];
 414
 415                 do {
 416                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 417                         packets = rx_ring->stats.packets;
 418                         bytes   = rx_ring->stats.bytes;
 419                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 420
 421                 stats->rx_packets += packets;
 422                 stats->rx_bytes   += bytes;
 423         }
 424         rcu_read_unlock();
 425
 426         /* following stats updated by i40e_watchdog_subtask() */
 427         stats->multicast        = vsi_stats->multicast;
 428         stats->tx_errors        = vsi_stats->tx_errors;
 429         stats->tx_dropped       = vsi_stats->tx_dropped;
 430         stats->rx_errors        = vsi_stats->rx_errors;
 431         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 432         stats->rx_length_errors = vsi_stats->rx_length_errors;
 433
 434         return stats;
 435 }
 436
 437 /**
 438  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 439  * @vsi: the VSI to have its stats reset
 440  **/
 441 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 442 {
 443         struct rtnl_link_stats64 *ns;
 444         int i;
 445
 446         if (!vsi)
 447                 return;
 448
 449         ns = i40e_get_vsi_stats_struct(vsi);
 450         memset(ns, 0, sizeof(*ns));
 451         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 452         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 453         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 454         if (vsi->rx_rings && vsi->rx_rings[0]) {
 455                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 456                         memset(&vsi->rx_rings[i]->stats, 0 ,
 457                                sizeof(vsi->rx_rings[i]->stats));
 458                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 459                                sizeof(vsi->rx_rings[i]->rx_stats));
 460                         memset(&vsi->tx_rings[i]->stats, 0 ,
 461                                sizeof(vsi->tx_rings[i]->stats));
 462                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 463                                sizeof(vsi->tx_rings[i]->tx_stats));
 464                 }
 465         }
 466         vsi->stat_offsets_loaded = false;
 467 }
 468
 469 /**
 470  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 471  * @pf: the PF to be reset
 472  **/
 473 void i40e_pf_reset_stats(struct i40e_pf *pf)
 474 {
 475         int i;
 476
 477         memset(&pf->stats, 0, sizeof(pf->stats));
 478         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 479         pf->stat_offsets_loaded = false;
 480
 481         for (i = 0; i < I40E_MAX_VEB; i++) {
 482                 if (pf->veb[i]) {
 483                         memset(&pf->veb[i]->stats, 0,
 484                                sizeof(pf->veb[i]->stats));
 485                         memset(&pf->veb[i]->stats_offsets, 0,
 486                                sizeof(pf->veb[i]->stats_offsets));
 487                         pf->veb[i]->stat_offsets_loaded = false;
 488                 }
 489         }
 490 }
 491
 492 /**
 493  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 494  * @hw: ptr to the hardware info
 495  * @hireg: the high 32 bit reg to read
 496  * @loreg: the low 32 bit reg to read
 497  * @offset_loaded: has the initial offset been loaded yet
 498  * @offset: ptr to current offset value
 499  * @stat: ptr to the stat
 500  *
 501  * Since the device stats are not reset at PFReset, they likely will not
 502  * be zeroed when the driver starts.  We'll save the first values read
 503  * and use them as offsets to be subtracted from the raw values in order
 504  * to report stats that count from zero.  In the process, we also manage
 505  * the potential roll-over.
 506  **/
 507 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 508                                bool offset_loaded, u64 *offset, u64 *stat)
 509 {
 510         u64 new_data;
 511
 512         if (hw->device_id == I40E_DEV_ID_QEMU) {
 513                 new_data = rd32(hw, loreg);
 514                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 515         } else {
 516                 new_data = rd64(hw, loreg);
 517         }
 518         if (!offset_loaded)
 519                 *offset = new_data;
 520         if (likely(new_data >= *offset))
 521                 *stat = new_data - *offset;
 522         else
 523                 *stat = (new_data + ((u64)1 << 48)) - *offset;
 524         *stat &= 0xFFFFFFFFFFFFULL;
 525 }
 526
 527 /**
 528  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 529  * @hw: ptr to the hardware info
 530  * @reg: the hw reg to read
 531  * @offset_loaded: has the initial offset been loaded yet
 532  * @offset: ptr to current offset value
 533  * @stat: ptr to the stat
 534  **/
 535 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 536                                bool offset_loaded, u64 *offset, u64 *stat)
 537 {
 538         u32 new_data;
 539
 540         new_data = rd32(hw, reg);
 541         if (!offset_loaded)
 542                 *offset = new_data;
 543         if (likely(new_data >= *offset))
 544                 *stat = (u32)(new_data - *offset);
 545         else
 546                 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
 547 }
 548
 549 /**
 550  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 551  * @vsi: the VSI to be updated
 552  **/
 553 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 554 {
 555         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 556         struct i40e_pf *pf = vsi->back;
 557         struct i40e_hw *hw = &pf->hw;
 558         struct i40e_eth_stats *oes;
 559         struct i40e_eth_stats *es;     /* device's eth stats */
 560
 561         es = &vsi->eth_stats;
 562         oes = &vsi->eth_stats_offsets;
 563
 564         /* Gather up the stats that the hw collects */
 565         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 566                            vsi->stat_offsets_loaded,
 567                            &oes->tx_errors, &es->tx_errors);
 568         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 569                            vsi->stat_offsets_loaded,
 570                            &oes->rx_discards, &es->rx_discards);
 571         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 572                            vsi->stat_offsets_loaded,
 573                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 574         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 575                            vsi->stat_offsets_loaded,
 576                            &oes->tx_errors, &es->tx_errors);
 577
 578         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 579                            I40E_GLV_GORCL(stat_idx),
 580                            vsi->stat_offsets_loaded,
 581                            &oes->rx_bytes, &es->rx_bytes);
 582         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 583                            I40E_GLV_UPRCL(stat_idx),
 584                            vsi->stat_offsets_loaded,
 585                            &oes->rx_unicast, &es->rx_unicast);
 586         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 587                            I40E_GLV_MPRCL(stat_idx),
 588                            vsi->stat_offsets_loaded,
 589                            &oes->rx_multicast, &es->rx_multicast);
 590         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 591                            I40E_GLV_BPRCL(stat_idx),
 592                            vsi->stat_offsets_loaded,
 593                            &oes->rx_broadcast, &es->rx_broadcast);
 594
 595         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 596                            I40E_GLV_GOTCL(stat_idx),
 597                            vsi->stat_offsets_loaded,
 598                            &oes->tx_bytes, &es->tx_bytes);
 599         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 600                            I40E_GLV_UPTCL(stat_idx),
 601                            vsi->stat_offsets_loaded,
 602                            &oes->tx_unicast, &es->tx_unicast);
 603         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 604                            I40E_GLV_MPTCL(stat_idx),
 605                            vsi->stat_offsets_loaded,
 606                            &oes->tx_multicast, &es->tx_multicast);
 607         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 608                            I40E_GLV_BPTCL(stat_idx),
 609                            vsi->stat_offsets_loaded,
 610                            &oes->tx_broadcast, &es->tx_broadcast);
 611         vsi->stat_offsets_loaded = true;
 612 }
 613
 614 /**
 615  * i40e_update_veb_stats - Update Switch component statistics
 616  * @veb: the VEB being updated
 617  **/
 618 static void i40e_update_veb_stats(struct i40e_veb *veb)
 619 {
 620         struct i40e_pf *pf = veb->pf;
 621         struct i40e_hw *hw = &pf->hw;
 622         struct i40e_eth_stats *oes;
 623         struct i40e_eth_stats *es;     /* device's eth stats */
 624         int idx = 0;
 625
 626         idx = veb->stats_idx;
 627         es = &veb->stats;
 628         oes = &veb->stats_offsets;
 629
 630         /* Gather up the stats that the hw collects */
 631         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 632                            veb->stat_offsets_loaded,
 633                            &oes->tx_discards, &es->tx_discards);
 634         if (hw->revision_id > 0)
 635                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 636                                    veb->stat_offsets_loaded,
 637                                    &oes->rx_unknown_protocol,
 638                                    &es->rx_unknown_protocol);
 639         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 640                            veb->stat_offsets_loaded,
 641                            &oes->rx_bytes, &es->rx_bytes);
 642         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 643                            veb->stat_offsets_loaded,
 644                            &oes->rx_unicast, &es->rx_unicast);
 645         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 646                            veb->stat_offsets_loaded,
 647                            &oes->rx_multicast, &es->rx_multicast);
 648         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 649                            veb->stat_offsets_loaded,
 650                            &oes->rx_broadcast, &es->rx_broadcast);
 651
 652         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 653                            veb->stat_offsets_loaded,
 654                            &oes->tx_bytes, &es->tx_bytes);
 655         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 656                            veb->stat_offsets_loaded,
 657                            &oes->tx_unicast, &es->tx_unicast);
 658         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 659                            veb->stat_offsets_loaded,
 660                            &oes->tx_multicast, &es->tx_multicast);
 661         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 662                            veb->stat_offsets_loaded,
 663                            &oes->tx_broadcast, &es->tx_broadcast);
 664         veb->stat_offsets_loaded = true;
 665 }
 666
 667 #ifdef I40E_FCOE
 668 /**
 669  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 670  * @vsi: the VSI that is capable of doing FCoE
 671  **/
 672 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 673 {
 674         struct i40e_pf *pf = vsi->back;
 675         struct i40e_hw *hw = &pf->hw;
 676         struct i40e_fcoe_stats *ofs;
 677         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 678         int idx;
 679
 680         if (vsi->type != I40E_VSI_FCOE)
 681                 return;
 682
 683         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 684         fs = &vsi->fcoe_stats;
 685         ofs = &vsi->fcoe_stats_offsets;
 686
 687         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 688                            vsi->fcoe_stat_offsets_loaded,
 689                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 690         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 691                            vsi->fcoe_stat_offsets_loaded,
 692                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 693         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 694                            vsi->fcoe_stat_offsets_loaded,
 695                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 696         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 697                            vsi->fcoe_stat_offsets_loaded,
 698                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 699         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 700                            vsi->fcoe_stat_offsets_loaded,
 701                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 702         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 703                            vsi->fcoe_stat_offsets_loaded,
 704                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 705         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 706                            vsi->fcoe_stat_offsets_loaded,
 707                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 708         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 709                            vsi->fcoe_stat_offsets_loaded,
 710                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 711
 712         vsi->fcoe_stat_offsets_loaded = true;
 713 }
 714
 715 #endif
 716 /**
 717  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 718  * @pf: the corresponding PF
 719  *
 720  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 721  **/
 722 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 723 {
 724         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 725         struct i40e_hw_port_stats *nsd = &pf->stats;
 726         struct i40e_hw *hw = &pf->hw;
 727         u64 xoff = 0;
 728         u16 i, v;
 729
 730         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 731             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 732                 return;
 733
 734         xoff = nsd->link_xoff_rx;
 735         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 736                            pf->stat_offsets_loaded,
 737                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 738
 739         /* No new LFC xoff rx */
 740         if (!(nsd->link_xoff_rx - xoff))
 741                 return;
 742
 743         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 744         for (v = 0; v < pf->num_alloc_vsi; v++) {
 745                 struct i40e_vsi *vsi = pf->vsi[v];
 746
 747                 if (!vsi || !vsi->tx_rings[0])
 748                         continue;
 749
 750                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 751                         struct i40e_ring *ring = vsi->tx_rings[i];
 752                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 753                 }
 754         }
 755 }
 756
 757 /**
 758  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 759  * @pf: the corresponding PF
 760  *
 761  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 762  **/
 763 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 764 {
 765         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 766         struct i40e_hw_port_stats *nsd = &pf->stats;
 767         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 768         struct i40e_dcbx_config *dcb_cfg;
 769         struct i40e_hw *hw = &pf->hw;
 770         u16 i, v;
 771         u8 tc;
 772
 773         dcb_cfg = &hw->local_dcbx_config;
 774
 775         /* See if DCB enabled with PFC TC */
 776         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 777             !(dcb_cfg->pfc.pfcenable)) {
 778                 i40e_update_link_xoff_rx(pf);
 779                 return;
 780         }
 781
 782         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 783                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 784                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 785                                    pf->stat_offsets_loaded,
 786                                    &osd->priority_xoff_rx[i],
 787                                    &nsd->priority_xoff_rx[i]);
 788
 789                 /* No new PFC xoff rx */
 790                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 791                         continue;
 792                 /* Get the TC for given priority */
 793                 tc = dcb_cfg->etscfg.prioritytable[i];
 794                 xoff[tc] = true;
 795         }
 796
 797         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 798         for (v = 0; v < pf->num_alloc_vsi; v++) {
 799                 struct i40e_vsi *vsi = pf->vsi[v];
 800
 801                 if (!vsi || !vsi->tx_rings[0])
 802                         continue;
 803
 804                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 805                         struct i40e_ring *ring = vsi->tx_rings[i];
 806
 807                         tc = ring->dcb_tc;
 808                         if (xoff[tc])
 809                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 810                                           &ring->state);
 811                 }
 812         }
 813 }
 814
 815 /**
 816  * i40e_update_vsi_stats - Update the vsi statistics counters.
 817  * @vsi: the VSI to be updated
 818  *
 819  * There are a few instances where we store the same stat in a
 820  * couple of different structs.  This is partly because we have
 821  * the netdev stats that need to be filled out, which is slightly
 822  * different from the "eth_stats" defined by the chip and used in
 823  * VF communications.  We sort it out here.
 824  **/
 825 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 826 {
 827         struct i40e_pf *pf = vsi->back;
 828         struct rtnl_link_stats64 *ons;
 829         struct rtnl_link_stats64 *ns;   /* netdev stats */
 830         struct i40e_eth_stats *oes;
 831         struct i40e_eth_stats *es;     /* device's eth stats */
 832         u32 tx_restart, tx_busy;
 833         struct i40e_ring *p;
 834         u32 rx_page, rx_buf;
 835         u64 bytes, packets;
 836         unsigned int start;
 837         u64 rx_p, rx_b;
 838         u64 tx_p, tx_b;
 839         u16 q;
 840
 841         if (test_bit(__I40E_DOWN, &vsi->state) ||
 842             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 843                 return;
 844
 845         ns = i40e_get_vsi_stats_struct(vsi);
 846         ons = &vsi->net_stats_offsets;
 847         es = &vsi->eth_stats;
 848         oes = &vsi->eth_stats_offsets;
 849
 850         /* Gather up the netdev and vsi stats that the driver collects
 851          * on the fly during packet processing
 852          */
 853         rx_b = rx_p = 0;
 854         tx_b = tx_p = 0;
 855         tx_restart = tx_busy = 0;
 856         rx_page = 0;
 857         rx_buf = 0;
 858         rcu_read_lock();
 859         for (q = 0; q < vsi->num_queue_pairs; q++) {
 860                 /* locate Tx ring */
 861                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 862
 863                 do {
 864                         start = u64_stats_fetch_begin_irq(&p->syncp);
 865                         packets = p->stats.packets;
 866                         bytes = p->stats.bytes;
 867                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 868                 tx_b += bytes;
 869                 tx_p += packets;
 870                 tx_restart += p->tx_stats.restart_queue;
 871                 tx_busy += p->tx_stats.tx_busy;
 872
 873                 /* Rx queue is part of the same block as Tx queue */
 874                 p = &p[1];
 875                 do {
 876                         start = u64_stats_fetch_begin_irq(&p->syncp);
 877                         packets = p->stats.packets;
 878                         bytes = p->stats.bytes;
 879                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 880                 rx_b += bytes;
 881                 rx_p += packets;
 882                 rx_buf += p->rx_stats.alloc_buff_failed;
 883                 rx_page += p->rx_stats.alloc_page_failed;
 884         }
 885         rcu_read_unlock();
 886         vsi->tx_restart = tx_restart;
 887         vsi->tx_busy = tx_busy;
 888         vsi->rx_page_failed = rx_page;
 889         vsi->rx_buf_failed = rx_buf;
 890
 891         ns->rx_packets = rx_p;
 892         ns->rx_bytes = rx_b;
 893         ns->tx_packets = tx_p;
 894         ns->tx_bytes = tx_b;
 895
 896         /* update netdev stats from eth stats */
 897         i40e_update_eth_stats(vsi);
 898         ons->tx_errors = oes->tx_errors;
 899         ns->tx_errors = es->tx_errors;
 900         ons->multicast = oes->rx_multicast;
 901         ns->multicast = es->rx_multicast;
 902         ons->rx_dropped = oes->rx_discards;
 903         ns->rx_dropped = es->rx_discards;
 904         ons->tx_dropped = oes->tx_discards;
 905         ns->tx_dropped = es->tx_discards;
 906
 907         /* pull in a couple PF stats if this is the main vsi */
 908         if (vsi == pf->vsi[pf->lan_vsi]) {
 909                 ns->rx_crc_errors = pf->stats.crc_errors;
 910                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 911                 ns->rx_length_errors = pf->stats.rx_length_errors;
 912         }
 913 }
 914
 915 /**
 916  * i40e_update_pf_stats - Update the PF statistics counters.
 917  * @pf: the PF to be updated
 918  **/
 919 static void i40e_update_pf_stats(struct i40e_pf *pf)
 920 {
 921         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 922         struct i40e_hw_port_stats *nsd = &pf->stats;
 923         struct i40e_hw *hw = &pf->hw;
 924         u32 val;
 925         int i;
 926
 927         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 928                            I40E_GLPRT_GORCL(hw->port),
 929                            pf->stat_offsets_loaded,
 930                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 931         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 932                            I40E_GLPRT_GOTCL(hw->port),
 933                            pf->stat_offsets_loaded,
 934                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 935         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 936                            pf->stat_offsets_loaded,
 937                            &osd->eth.rx_discards,
 938                            &nsd->eth.rx_discards);
 939         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 940                            I40E_GLPRT_UPRCL(hw->port),
 941                            pf->stat_offsets_loaded,
 942                            &osd->eth.rx_unicast,
 943                            &nsd->eth.rx_unicast);
 944         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 945                            I40E_GLPRT_MPRCL(hw->port),
 946                            pf->stat_offsets_loaded,
 947                            &osd->eth.rx_multicast,
 948                            &nsd->eth.rx_multicast);
 949         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 950                            I40E_GLPRT_BPRCL(hw->port),
 951                            pf->stat_offsets_loaded,
 952                            &osd->eth.rx_broadcast,
 953                            &nsd->eth.rx_broadcast);
 954         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 955                            I40E_GLPRT_UPTCL(hw->port),
 956                            pf->stat_offsets_loaded,
 957                            &osd->eth.tx_unicast,
 958                            &nsd->eth.tx_unicast);
 959         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 960                            I40E_GLPRT_MPTCL(hw->port),
 961                            pf->stat_offsets_loaded,
 962                            &osd->eth.tx_multicast,
 963                            &nsd->eth.tx_multicast);
 964         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 965                            I40E_GLPRT_BPTCL(hw->port),
 966                            pf->stat_offsets_loaded,
 967                            &osd->eth.tx_broadcast,
 968                            &nsd->eth.tx_broadcast);
 969
 970         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 971                            pf->stat_offsets_loaded,
 972                            &osd->tx_dropped_link_down,
 973                            &nsd->tx_dropped_link_down);
 974
 975         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 976                            pf->stat_offsets_loaded,
 977                            &osd->crc_errors, &nsd->crc_errors);
 978
 979         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 980                            pf->stat_offsets_loaded,
 981                            &osd->illegal_bytes, &nsd->illegal_bytes);
 982
 983         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 984                            pf->stat_offsets_loaded,
 985                            &osd->mac_local_faults,
 986                            &nsd->mac_local_faults);
 987         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 988                            pf->stat_offsets_loaded,
 989                            &osd->mac_remote_faults,
 990                            &nsd->mac_remote_faults);
 991
 992         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 993                            pf->stat_offsets_loaded,
 994                            &osd->rx_length_errors,
 995                            &nsd->rx_length_errors);
 996
 997         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 998                            pf->stat_offsets_loaded,
 999                            &osd->link_xon_rx, &nsd->link_xon_rx);
1000         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1001                            pf->stat_offsets_loaded,
1002                            &osd->link_xon_tx, &nsd->link_xon_tx);
1003         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
1004         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1005                            pf->stat_offsets_loaded,
1006                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1007
1008         for (i = 0; i < 8; i++) {
1009                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1010                                    pf->stat_offsets_loaded,
1011                                    &osd->priority_xon_rx[i],
1012                                    &nsd->priority_xon_rx[i]);
1013                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1014                                    pf->stat_offsets_loaded,
1015                                    &osd->priority_xon_tx[i],
1016                                    &nsd->priority_xon_tx[i]);
1017                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1018                                    pf->stat_offsets_loaded,
1019                                    &osd->priority_xoff_tx[i],
1020                                    &nsd->priority_xoff_tx[i]);
1021                 i40e_stat_update32(hw,
1022                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1023                                    pf->stat_offsets_loaded,
1024                                    &osd->priority_xon_2_xoff[i],
1025                                    &nsd->priority_xon_2_xoff[i]);
1026         }
1027
1028         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1029                            I40E_GLPRT_PRC64L(hw->port),
1030                            pf->stat_offsets_loaded,
1031                            &osd->rx_size_64, &nsd->rx_size_64);
1032         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1033                            I40E_GLPRT_PRC127L(hw->port),
1034                            pf->stat_offsets_loaded,
1035                            &osd->rx_size_127, &nsd->rx_size_127);
1036         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1037                            I40E_GLPRT_PRC255L(hw->port),
1038                            pf->stat_offsets_loaded,
1039                            &osd->rx_size_255, &nsd->rx_size_255);
1040         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1041                            I40E_GLPRT_PRC511L(hw->port),
1042                            pf->stat_offsets_loaded,
1043                            &osd->rx_size_511, &nsd->rx_size_511);
1044         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1045                            I40E_GLPRT_PRC1023L(hw->port),
1046                            pf->stat_offsets_loaded,
1047                            &osd->rx_size_1023, &nsd->rx_size_1023);
1048         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1049                            I40E_GLPRT_PRC1522L(hw->port),
1050                            pf->stat_offsets_loaded,
1051                            &osd->rx_size_1522, &nsd->rx_size_1522);
1052         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1053                            I40E_GLPRT_PRC9522L(hw->port),
1054                            pf->stat_offsets_loaded,
1055                            &osd->rx_size_big, &nsd->rx_size_big);
1056
1057         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1058                            I40E_GLPRT_PTC64L(hw->port),
1059                            pf->stat_offsets_loaded,
1060                            &osd->tx_size_64, &nsd->tx_size_64);
1061         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1062                            I40E_GLPRT_PTC127L(hw->port),
1063                            pf->stat_offsets_loaded,
1064                            &osd->tx_size_127, &nsd->tx_size_127);
1065         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1066                            I40E_GLPRT_PTC255L(hw->port),
1067                            pf->stat_offsets_loaded,
1068                            &osd->tx_size_255, &nsd->tx_size_255);
1069         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1070                            I40E_GLPRT_PTC511L(hw->port),
1071                            pf->stat_offsets_loaded,
1072                            &osd->tx_size_511, &nsd->tx_size_511);
1073         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1074                            I40E_GLPRT_PTC1023L(hw->port),
1075                            pf->stat_offsets_loaded,
1076                            &osd->tx_size_1023, &nsd->tx_size_1023);
1077         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1078                            I40E_GLPRT_PTC1522L(hw->port),
1079                            pf->stat_offsets_loaded,
1080                            &osd->tx_size_1522, &nsd->tx_size_1522);
1081         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1082                            I40E_GLPRT_PTC9522L(hw->port),
1083                            pf->stat_offsets_loaded,
1084                            &osd->tx_size_big, &nsd->tx_size_big);
1085
1086         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1087                            pf->stat_offsets_loaded,
1088                            &osd->rx_undersize, &nsd->rx_undersize);
1089         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1090                            pf->stat_offsets_loaded,
1091                            &osd->rx_fragments, &nsd->rx_fragments);
1092         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1093                            pf->stat_offsets_loaded,
1094                            &osd->rx_oversize, &nsd->rx_oversize);
1095         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1096                            pf->stat_offsets_loaded,
1097                            &osd->rx_jabber, &nsd->rx_jabber);
1098
1099         /* FDIR stats */
1100         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_atr_cnt_idx),
1101                            pf->stat_offsets_loaded,
1102                            &osd->fd_atr_match, &nsd->fd_atr_match);
1103         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_sb_cnt_idx),
1104                            pf->stat_offsets_loaded,
1105                            &osd->fd_sb_match, &nsd->fd_sb_match);
1106
1107         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1108         nsd->tx_lpi_status =
1109                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1110                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1111         nsd->rx_lpi_status =
1112                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1113                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1114         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1115                            pf->stat_offsets_loaded,
1116                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1117         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1118                            pf->stat_offsets_loaded,
1119                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1120
1121         pf->stat_offsets_loaded = true;
1122 }
1123
1124 /**
1125  * i40e_update_stats - Update the various statistics counters.
1126  * @vsi: the VSI to be updated
1127  *
1128  * Update the various stats for this VSI and its related entities.
1129  **/
1130 void i40e_update_stats(struct i40e_vsi *vsi)
1131 {
1132         struct i40e_pf *pf = vsi->back;
1133
1134         if (vsi == pf->vsi[pf->lan_vsi])
1135                 i40e_update_pf_stats(pf);
1136
1137         i40e_update_vsi_stats(vsi);
1138 #ifdef I40E_FCOE
1139         i40e_update_fcoe_stats(vsi);
1140 #endif
1141 }
1142
1143 /**
1144  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1145  * @vsi: the VSI to be searched
1146  * @macaddr: the MAC address
1147  * @vlan: the vlan
1148  * @is_vf: make sure its a VF filter, else doesn't matter
1149  * @is_netdev: make sure its a netdev filter, else doesn't matter
1150  *
1151  * Returns ptr to the filter object or NULL
1152  **/
1153 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1154                                                 u8 *macaddr, s16 vlan,
1155                                                 bool is_vf, bool is_netdev)
1156 {
1157         struct i40e_mac_filter *f;
1158
1159         if (!vsi || !macaddr)
1160                 return NULL;
1161
1162         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1163                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1164                     (vlan == f->vlan)    &&
1165                     (!is_vf || f->is_vf) &&
1166                     (!is_netdev || f->is_netdev))
1167                         return f;
1168         }
1169         return NULL;
1170 }
1171
1172 /**
1173  * i40e_find_mac - Find a mac addr in the macvlan filters list
1174  * @vsi: the VSI to be searched
1175  * @macaddr: the MAC address we are searching for
1176  * @is_vf: make sure its a VF filter, else doesn't matter
1177  * @is_netdev: make sure its a netdev filter, else doesn't matter
1178  *
1179  * Returns the first filter with the provided MAC address or NULL if
1180  * MAC address was not found
1181  **/
1182 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1183                                       bool is_vf, bool is_netdev)
1184 {
1185         struct i40e_mac_filter *f;
1186
1187         if (!vsi || !macaddr)
1188                 return NULL;
1189
1190         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1191                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1192                     (!is_vf || f->is_vf) &&
1193                     (!is_netdev || f->is_netdev))
1194                         return f;
1195         }
1196         return NULL;
1197 }
1198
1199 /**
1200  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1201  * @vsi: the VSI to be searched
1202  *
1203  * Returns true if VSI is in vlan mode or false otherwise
1204  **/
1205 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1206 {
1207         struct i40e_mac_filter *f;
1208
1209         /* Only -1 for all the filters denotes not in vlan mode
1210          * so we have to go through all the list in order to make sure
1211          */
1212         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1213                 if (f->vlan >= 0)
1214                         return true;
1215         }
1216
1217         return false;
1218 }
1219
1220 /**
1221  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1222  * @vsi: the VSI to be searched
1223  * @macaddr: the mac address to be filtered
1224  * @is_vf: true if it is a VF
1225  * @is_netdev: true if it is a netdev
1226  *
1227  * Goes through all the macvlan filters and adds a
1228  * macvlan filter for each unique vlan that already exists
1229  *
1230  * Returns first filter found on success, else NULL
1231  **/
1232 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1233                                              bool is_vf, bool is_netdev)
1234 {
1235         struct i40e_mac_filter *f;
1236
1237         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1238                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1239                                       is_vf, is_netdev)) {
1240                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1241                                              is_vf, is_netdev))
1242                                 return NULL;
1243                 }
1244         }
1245
1246         return list_first_entry_or_null(&vsi->mac_filter_list,
1247                                         struct i40e_mac_filter, list);
1248 }
1249
1250 /**
1251  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1252  * @vsi: the PF Main VSI - inappropriate for any other VSI
1253  * @macaddr: the MAC address
1254  *
1255  * Some older firmware configurations set up a default promiscuous VLAN
1256  * filter that needs to be removed.
1257  **/
1258 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1259 {
1260         struct i40e_aqc_remove_macvlan_element_data element;
1261         struct i40e_pf *pf = vsi->back;
1262         i40e_status aq_ret;
1263
1264         /* Only appropriate for the PF main VSI */
1265         if (vsi->type != I40E_VSI_MAIN)
1266                 return -EINVAL;
1267
1268         memset(&element, 0, sizeof(element));
1269         ether_addr_copy(element.mac_addr, macaddr);
1270         element.vlan_tag = 0;
1271         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1272                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1273         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1274         if (aq_ret)
1275                 return -ENOENT;
1276
1277         return 0;
1278 }
1279
1280 /**
1281  * i40e_add_filter - Add a mac/vlan filter to the VSI
1282  * @vsi: the VSI to be searched
1283  * @macaddr: the MAC address
1284  * @vlan: the vlan
1285  * @is_vf: make sure its a VF filter, else doesn't matter
1286  * @is_netdev: make sure its a netdev filter, else doesn't matter
1287  *
1288  * Returns ptr to the filter object or NULL when no memory available.
1289  **/
1290 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1291                                         u8 *macaddr, s16 vlan,
1292                                         bool is_vf, bool is_netdev)
1293 {
1294         struct i40e_mac_filter *f;
1295
1296         if (!vsi || !macaddr)
1297                 return NULL;
1298
1299         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1300         if (!f) {
1301                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1302                 if (!f)
1303                         goto add_filter_out;
1304
1305                 ether_addr_copy(f->macaddr, macaddr);
1306                 f->vlan = vlan;
1307                 f->changed = true;
1308
1309                 INIT_LIST_HEAD(&f->list);
1310                 list_add(&f->list, &vsi->mac_filter_list);
1311         }
1312
1313         /* increment counter and add a new flag if needed */
1314         if (is_vf) {
1315                 if (!f->is_vf) {
1316                         f->is_vf = true;
1317                         f->counter++;
1318                 }
1319         } else if (is_netdev) {
1320                 if (!f->is_netdev) {
1321                         f->is_netdev = true;
1322                         f->counter++;
1323                 }
1324         } else {
1325                 f->counter++;
1326         }
1327
1328         /* changed tells sync_filters_subtask to
1329          * push the filter down to the firmware
1330          */
1331         if (f->changed) {
1332                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1333                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1334         }
1335
1336 add_filter_out:
1337         return f;
1338 }
1339
1340 /**
1341  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1342  * @vsi: the VSI to be searched
1343  * @macaddr: the MAC address
1344  * @vlan: the vlan
1345  * @is_vf: make sure it's a VF filter, else doesn't matter
1346  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1347  **/
1348 void i40e_del_filter(struct i40e_vsi *vsi,
1349                      u8 *macaddr, s16 vlan,
1350                      bool is_vf, bool is_netdev)
1351 {
1352         struct i40e_mac_filter *f;
1353
1354         if (!vsi || !macaddr)
1355                 return;
1356
1357         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1358         if (!f || f->counter == 0)
1359                 return;
1360
1361         if (is_vf) {
1362                 if (f->is_vf) {
1363                         f->is_vf = false;
1364                         f->counter--;
1365                 }
1366         } else if (is_netdev) {
1367                 if (f->is_netdev) {
1368                         f->is_netdev = false;
1369                         f->counter--;
1370                 }
1371         } else {
1372                 /* make sure we don't remove a filter in use by VF or netdev */
1373                 int min_f = 0;
1374                 min_f += (f->is_vf ? 1 : 0);
1375                 min_f += (f->is_netdev ? 1 : 0);
1376
1377                 if (f->counter > min_f)
1378                         f->counter--;
1379         }
1380
1381         /* counter == 0 tells sync_filters_subtask to
1382          * remove the filter from the firmware's list
1383          */
1384         if (f->counter == 0) {
1385                 f->changed = true;
1386                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1387                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1388         }
1389 }
1390
1391 /**
1392  * i40e_set_mac - NDO callback to set mac address
1393  * @netdev: network interface device structure
1394  * @p: pointer to an address structure
1395  *
1396  * Returns 0 on success, negative on failure
1397  **/
1398 #ifdef I40E_FCOE
1399 int i40e_set_mac(struct net_device *netdev, void *p)
1400 #else
1401 static int i40e_set_mac(struct net_device *netdev, void *p)
1402 #endif
1403 {
1404         struct i40e_netdev_priv *np = netdev_priv(netdev);
1405         struct i40e_vsi *vsi = np->vsi;
1406         struct i40e_pf *pf = vsi->back;
1407         struct i40e_hw *hw = &pf->hw;
1408         struct sockaddr *addr = p;
1409         struct i40e_mac_filter *f;
1410
1411         if (!is_valid_ether_addr(addr->sa_data))
1412                 return -EADDRNOTAVAIL;
1413
1414         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1415                 netdev_info(netdev, "already using mac address %pM\n",
1416                             addr->sa_data);
1417                 return 0;
1418         }
1419
1420         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1421             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1422                 return -EADDRNOTAVAIL;
1423
1424         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1425                 netdev_info(netdev, "returning to hw mac address %pM\n",
1426                             hw->mac.addr);
1427         else
1428                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1429
1430         if (vsi->type == I40E_VSI_MAIN) {
1431                 i40e_status ret;
1432                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1433                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1434                                                 addr->sa_data, NULL);
1435                 if (ret) {
1436                         netdev_info(netdev,
1437                                     "Addr change for Main VSI failed: %d\n",
1438                                     ret);
1439                         return -EADDRNOTAVAIL;
1440                 }
1441         }
1442
1443         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1444                 struct i40e_aqc_remove_macvlan_element_data element;
1445
1446                 memset(&element, 0, sizeof(element));
1447                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1448                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1449                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1450         } else {
1451                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1452                                 false, false);
1453         }
1454
1455         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1456                 struct i40e_aqc_add_macvlan_element_data element;
1457
1458                 memset(&element, 0, sizeof(element));
1459                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1460                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1461                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1462         } else {
1463                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1464                                     false, false);
1465                 if (f)
1466                         f->is_laa = true;
1467         }
1468
1469         i40e_sync_vsi_filters(vsi);
1470         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1471
1472         return 0;
1473 }
1474
1475 /**
1476  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1477  * @vsi: the VSI being setup
1478  * @ctxt: VSI context structure
1479  * @enabled_tc: Enabled TCs bitmap
1480  * @is_add: True if called before Add VSI
1481  *
1482  * Setup VSI queue mapping for enabled traffic classes.
1483  **/
1484 #ifdef I40E_FCOE
1485 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1486                               struct i40e_vsi_context *ctxt,
1487                               u8 enabled_tc,
1488                               bool is_add)
1489 #else
1490 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1491                                      struct i40e_vsi_context *ctxt,
1492                                      u8 enabled_tc,
1493                                      bool is_add)
1494 #endif
1495 {
1496         struct i40e_pf *pf = vsi->back;
1497         u16 sections = 0;
1498         u8 netdev_tc = 0;
1499         u16 numtc = 0;
1500         u16 qcount;
1501         u8 offset;
1502         u16 qmap;
1503         int i;
1504         u16 num_tc_qps = 0;
1505
1506         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1507         offset = 0;
1508
1509         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1510                 /* Find numtc from enabled TC bitmap */
1511                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1512                         if (enabled_tc & (1 << i)) /* TC is enabled */
1513                                 numtc++;
1514                 }
1515                 if (!numtc) {
1516                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1517                         numtc = 1;
1518                 }
1519         } else {
1520                 /* At least TC0 is enabled in case of non-DCB case */
1521                 numtc = 1;
1522         }
1523
1524         vsi->tc_config.numtc = numtc;
1525         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1526         /* Number of queues per enabled TC */
1527         /* In MFP case we can have a much lower count of MSIx
1528          * vectors available and so we need to lower the used
1529          * q count.
1530          */
1531         qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1532         num_tc_qps = qcount / numtc;
1533         num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
1534
1535         /* Setup queue offset/count for all TCs for given VSI */
1536         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1537                 /* See if the given TC is enabled for the given VSI */
1538                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1539                         int pow, num_qps;
1540
1541                         switch (vsi->type) {
1542                         case I40E_VSI_MAIN:
1543                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1544                                 break;
1545 #ifdef I40E_FCOE
1546                         case I40E_VSI_FCOE:
1547                                 qcount = num_tc_qps;
1548                                 break;
1549 #endif
1550                         case I40E_VSI_FDIR:
1551                         case I40E_VSI_SRIOV:
1552                         case I40E_VSI_VMDQ2:
1553                         default:
1554                                 qcount = num_tc_qps;
1555                                 WARN_ON(i != 0);
1556                                 break;
1557                         }
1558                         vsi->tc_config.tc_info[i].qoffset = offset;
1559                         vsi->tc_config.tc_info[i].qcount = qcount;
1560
1561                         /* find the next higher power-of-2 of num queue pairs */
1562                         num_qps = qcount;
1563                         pow = 0;
1564                         while (num_qps && ((1 << pow) < qcount)) {
1565                                 pow++;
1566                                 num_qps >>= 1;
1567                         }
1568
1569                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1570                         qmap =
1571                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1572                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1573
1574                         offset += qcount;
1575                 } else {
1576                         /* TC is not enabled so set the offset to
1577                          * default queue and allocate one queue
1578                          * for the given TC.
1579                          */
1580                         vsi->tc_config.tc_info[i].qoffset = 0;
1581                         vsi->tc_config.tc_info[i].qcount = 1;
1582                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1583
1584                         qmap = 0;
1585                 }
1586                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1587         }
1588
1589         /* Set actual Tx/Rx queue pairs */
1590         vsi->num_queue_pairs = offset;
1591         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1592                 if (vsi->req_queue_pairs > 0)
1593                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1594                 else
1595                         vsi->num_queue_pairs = pf->num_lan_msix;
1596         }
1597
1598         /* Scheduler section valid can only be set for ADD VSI */
1599         if (is_add) {
1600                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1601
1602                 ctxt->info.up_enable_bits = enabled_tc;
1603         }
1604         if (vsi->type == I40E_VSI_SRIOV) {
1605                 ctxt->info.mapping_flags |=
1606                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1607                 for (i = 0; i < vsi->num_queue_pairs; i++)
1608                         ctxt->info.queue_mapping[i] =
1609                                                cpu_to_le16(vsi->base_queue + i);
1610         } else {
1611                 ctxt->info.mapping_flags |=
1612                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1613                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1614         }
1615         ctxt->info.valid_sections |= cpu_to_le16(sections);
1616 }
1617
1618 /**
1619  * i40e_set_rx_mode - NDO callback to set the netdev filters
1620  * @netdev: network interface device structure
1621  **/
1622 #ifdef I40E_FCOE
1623 void i40e_set_rx_mode(struct net_device *netdev)
1624 #else
1625 static void i40e_set_rx_mode(struct net_device *netdev)
1626 #endif
1627 {
1628         struct i40e_netdev_priv *np = netdev_priv(netdev);
1629         struct i40e_mac_filter *f, *ftmp;
1630         struct i40e_vsi *vsi = np->vsi;
1631         struct netdev_hw_addr *uca;
1632         struct netdev_hw_addr *mca;
1633         struct netdev_hw_addr *ha;
1634
1635         /* add addr if not already in the filter list */
1636         netdev_for_each_uc_addr(uca, netdev) {
1637                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1638                         if (i40e_is_vsi_in_vlan(vsi))
1639                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1640                                                      false, true);
1641                         else
1642                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1643                                                 false, true);
1644                 }
1645         }
1646
1647         netdev_for_each_mc_addr(mca, netdev) {
1648                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1649                         if (i40e_is_vsi_in_vlan(vsi))
1650                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1651                                                      false, true);
1652                         else
1653                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1654                                                 false, true);
1655                 }
1656         }
1657
1658         /* remove filter if not in netdev list */
1659         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1660                 bool found = false;
1661
1662                 if (!f->is_netdev)
1663                         continue;
1664
1665                 if (is_multicast_ether_addr(f->macaddr)) {
1666                         netdev_for_each_mc_addr(mca, netdev) {
1667                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1668                                         found = true;
1669                                         break;
1670                                 }
1671                         }
1672                 } else {
1673                         netdev_for_each_uc_addr(uca, netdev) {
1674                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1675                                         found = true;
1676                                         break;
1677                                 }
1678                         }
1679
1680                         for_each_dev_addr(netdev, ha) {
1681                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1682                                         found = true;
1683                                         break;
1684                                 }
1685                         }
1686                 }
1687                 if (!found)
1688                         i40e_del_filter(
1689                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1690         }
1691
1692         /* check for other flag changes */
1693         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1694                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1695                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1696         }
1697 }
1698
1699 /**
1700  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1701  * @vsi: ptr to the VSI
1702  *
1703  * Push any outstanding VSI filter changes through the AdminQ.
1704  *
1705  * Returns 0 or error value
1706  **/
1707 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1708 {
1709         struct i40e_mac_filter *f, *ftmp;
1710         bool promisc_forced_on = false;
1711         bool add_happened = false;
1712         int filter_list_len = 0;
1713         u32 changed_flags = 0;
1714         i40e_status aq_ret = 0;
1715         struct i40e_pf *pf;
1716         int num_add = 0;
1717         int num_del = 0;
1718         u16 cmd_flags;
1719
1720         /* empty array typed pointers, kcalloc later */
1721         struct i40e_aqc_add_macvlan_element_data *add_list;
1722         struct i40e_aqc_remove_macvlan_element_data *del_list;
1723
1724         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1725                 usleep_range(1000, 2000);
1726         pf = vsi->back;
1727
1728         if (vsi->netdev) {
1729                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1730                 vsi->current_netdev_flags = vsi->netdev->flags;
1731         }
1732
1733         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1734                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1735
1736                 filter_list_len = pf->hw.aq.asq_buf_size /
1737                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1738                 del_list = kcalloc(filter_list_len,
1739                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1740                             GFP_KERNEL);
1741                 if (!del_list)
1742                         return -ENOMEM;
1743
1744                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1745                         if (!f->changed)
1746                                 continue;
1747
1748                         if (f->counter != 0)
1749                                 continue;
1750                         f->changed = false;
1751                         cmd_flags = 0;
1752
1753                         /* add to delete list */
1754                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1755                         del_list[num_del].vlan_tag =
1756                                 cpu_to_le16((u16)(f->vlan ==
1757                                             I40E_VLAN_ANY ? 0 : f->vlan));
1758
1759                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1760                         del_list[num_del].flags = cmd_flags;
1761                         num_del++;
1762
1763                         /* unlink from filter list */
1764                         list_del(&f->list);
1765                         kfree(f);
1766
1767                         /* flush a full buffer */
1768                         if (num_del == filter_list_len) {
1769                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1770                                             vsi->seid, del_list, num_del,
1771                                             NULL);
1772                                 num_del = 0;
1773                                 memset(del_list, 0, sizeof(*del_list));
1774
1775                                 if (aq_ret &&
1776                                     pf->hw.aq.asq_last_status !=
1777                                                               I40E_AQ_RC_ENOENT)
1778                                         dev_info(&pf->pdev->dev,
1779                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1780                                                  aq_ret,
1781                                                  pf->hw.aq.asq_last_status);
1782                         }
1783                 }
1784                 if (num_del) {
1785                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1786                                                      del_list, num_del, NULL);
1787                         num_del = 0;
1788
1789                         if (aq_ret &&
1790                             pf->hw.aq.asq_last_status != I40E_AQ_RC_ENOENT)
1791                                 dev_info(&pf->pdev->dev,
1792                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1793                                          aq_ret, pf->hw.aq.asq_last_status);
1794                 }
1795
1796                 kfree(del_list);
1797                 del_list = NULL;
1798
1799                 /* do all the adds now */
1800                 filter_list_len = pf->hw.aq.asq_buf_size /
1801                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1802                 add_list = kcalloc(filter_list_len,
1803                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1804                                GFP_KERNEL);
1805                 if (!add_list)
1806                         return -ENOMEM;
1807
1808                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1809                         if (!f->changed)
1810                                 continue;
1811
1812                         if (f->counter == 0)
1813                                 continue;
1814                         f->changed = false;
1815                         add_happened = true;
1816                         cmd_flags = 0;
1817
1818                         /* add to add array */
1819                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1820                         add_list[num_add].vlan_tag =
1821                                 cpu_to_le16(
1822                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1823                         add_list[num_add].queue_number = 0;
1824
1825                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1826                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1827                         num_add++;
1828
1829                         /* flush a full buffer */
1830                         if (num_add == filter_list_len) {
1831                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1832                                                              add_list, num_add,
1833                                                              NULL);
1834                                 num_add = 0;
1835
1836                                 if (aq_ret)
1837                                         break;
1838                                 memset(add_list, 0, sizeof(*add_list));
1839                         }
1840                 }
1841                 if (num_add) {
1842                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1843                                                      add_list, num_add, NULL);
1844                         num_add = 0;
1845                 }
1846                 kfree(add_list);
1847                 add_list = NULL;
1848
1849                 if (add_happened && aq_ret &&
1850                     pf->hw.aq.asq_last_status != I40E_AQ_RC_EINVAL) {
1851                         dev_info(&pf->pdev->dev,
1852                                  "add filter failed, err %d, aq_err %d\n",
1853                                  aq_ret, pf->hw.aq.asq_last_status);
1854                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1855                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1856                                       &vsi->state)) {
1857                                 promisc_forced_on = true;
1858                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1859                                         &vsi->state);
1860                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1861                         }
1862                 }
1863         }
1864
1865         /* check for changes in promiscuous modes */
1866         if (changed_flags & IFF_ALLMULTI) {
1867                 bool cur_multipromisc;
1868                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1869                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1870                                                                vsi->seid,
1871                                                                cur_multipromisc,
1872                                                                NULL);
1873                 if (aq_ret)
1874                         dev_info(&pf->pdev->dev,
1875                                  "set multi promisc failed, err %d, aq_err %d\n",
1876                                  aq_ret, pf->hw.aq.asq_last_status);
1877         }
1878         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1879                 bool cur_promisc;
1880                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1881                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1882                                         &vsi->state));
1883                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1884                                                              vsi->seid,
1885                                                              cur_promisc, NULL);
1886                 if (aq_ret)
1887                         dev_info(&pf->pdev->dev,
1888                                  "set uni promisc failed, err %d, aq_err %d\n",
1889                                  aq_ret, pf->hw.aq.asq_last_status);
1890                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1891                                                    vsi->seid,
1892                                                    cur_promisc, NULL);
1893                 if (aq_ret)
1894                         dev_info(&pf->pdev->dev,
1895                                  "set brdcast promisc failed, err %d, aq_err %d\n",
1896                                  aq_ret, pf->hw.aq.asq_last_status);
1897         }
1898
1899         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1900         return 0;
1901 }
1902
1903 /**
1904  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1905  * @pf: board private structure
1906  **/
1907 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1908 {
1909         int v;
1910
1911         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1912                 return;
1913         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1914
1915         for (v = 0; v < pf->num_alloc_vsi; v++) {
1916                 if (pf->vsi[v] &&
1917                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1918                         i40e_sync_vsi_filters(pf->vsi[v]);
1919         }
1920 }
1921
1922 /**
1923  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1924  * @netdev: network interface device structure
1925  * @new_mtu: new value for maximum frame size
1926  *
1927  * Returns 0 on success, negative on failure
1928  **/
1929 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1930 {
1931         struct i40e_netdev_priv *np = netdev_priv(netdev);
1932         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1933         struct i40e_vsi *vsi = np->vsi;
1934
1935         /* MTU < 68 is an error and causes problems on some kernels */
1936         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1937                 return -EINVAL;
1938
1939         netdev_info(netdev, "changing MTU from %d to %d\n",
1940                     netdev->mtu, new_mtu);
1941         netdev->mtu = new_mtu;
1942         if (netif_running(netdev))
1943                 i40e_vsi_reinit_locked(vsi);
1944
1945         return 0;
1946 }
1947
1948 /**
1949  * i40e_ioctl - Access the hwtstamp interface
1950  * @netdev: network interface device structure
1951  * @ifr: interface request data
1952  * @cmd: ioctl command
1953  **/
1954 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1955 {
1956         struct i40e_netdev_priv *np = netdev_priv(netdev);
1957         struct i40e_pf *pf = np->vsi->back;
1958
1959         switch (cmd) {
1960         case SIOCGHWTSTAMP:
1961                 return i40e_ptp_get_ts_config(pf, ifr);
1962         case SIOCSHWTSTAMP:
1963                 return i40e_ptp_set_ts_config(pf, ifr);
1964         default:
1965                 return -EOPNOTSUPP;
1966         }
1967 }
1968
1969 /**
1970  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1971  * @vsi: the vsi being adjusted
1972  **/
1973 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1974 {
1975         struct i40e_vsi_context ctxt;
1976         i40e_status ret;
1977
1978         if ((vsi->info.valid_sections &
1979              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1980             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1981                 return;  /* already enabled */
1982
1983         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1984         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1985                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1986
1987         ctxt.seid = vsi->seid;
1988         ctxt.info = vsi->info;
1989         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1990         if (ret) {
1991                 dev_info(&vsi->back->pdev->dev,
1992                          "%s: update vsi failed, aq_err=%d\n",
1993                          __func__, vsi->back->hw.aq.asq_last_status);
1994         }
1995 }
1996
1997 /**
1998  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1999  * @vsi: the vsi being adjusted
2000  **/
2001 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2002 {
2003         struct i40e_vsi_context ctxt;
2004         i40e_status ret;
2005
2006         if ((vsi->info.valid_sections &
2007              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2008             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2009              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2010                 return;  /* already disabled */
2011
2012         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2013         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2014                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2015
2016         ctxt.seid = vsi->seid;
2017         ctxt.info = vsi->info;
2018         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2019         if (ret) {
2020                 dev_info(&vsi->back->pdev->dev,
2021                          "%s: update vsi failed, aq_err=%d\n",
2022                          __func__, vsi->back->hw.aq.asq_last_status);
2023         }
2024 }
2025
2026 /**
2027  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2028  * @netdev: network interface to be adjusted
2029  * @features: netdev features to test if VLAN offload is enabled or not
2030  **/
2031 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2032 {
2033         struct i40e_netdev_priv *np = netdev_priv(netdev);
2034         struct i40e_vsi *vsi = np->vsi;
2035
2036         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2037                 i40e_vlan_stripping_enable(vsi);
2038         else
2039                 i40e_vlan_stripping_disable(vsi);
2040 }
2041
2042 /**
2043  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2044  * @vsi: the vsi being configured
2045  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2046  **/
2047 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2048 {
2049         struct i40e_mac_filter *f, *add_f;
2050         bool is_netdev, is_vf;
2051
2052         is_vf = (vsi->type == I40E_VSI_SRIOV);
2053         is_netdev = !!(vsi->netdev);
2054
2055         if (is_netdev) {
2056                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2057                                         is_vf, is_netdev);
2058                 if (!add_f) {
2059                         dev_info(&vsi->back->pdev->dev,
2060                                  "Could not add vlan filter %d for %pM\n",
2061                                  vid, vsi->netdev->dev_addr);
2062                         return -ENOMEM;
2063                 }
2064         }
2065
2066         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2067                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2068                 if (!add_f) {
2069                         dev_info(&vsi->back->pdev->dev,
2070                                  "Could not add vlan filter %d for %pM\n",
2071                                  vid, f->macaddr);
2072                         return -ENOMEM;
2073                 }
2074         }
2075
2076         /* Now if we add a vlan tag, make sure to check if it is the first
2077          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2078          * with 0, so we now accept untagged and specified tagged traffic
2079          * (and not any taged and untagged)
2080          */
2081         if (vid > 0) {
2082                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2083                                                   I40E_VLAN_ANY,
2084                                                   is_vf, is_netdev)) {
2085                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2086                                         I40E_VLAN_ANY, is_vf, is_netdev);
2087                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2088                                                 is_vf, is_netdev);
2089                         if (!add_f) {
2090                                 dev_info(&vsi->back->pdev->dev,
2091                                          "Could not add filter 0 for %pM\n",
2092                                          vsi->netdev->dev_addr);
2093                                 return -ENOMEM;
2094                         }
2095                 }
2096         }
2097
2098         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2099         if (vid > 0 && !vsi->info.pvid) {
2100                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2101                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2102                                              is_vf, is_netdev)) {
2103                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2104                                                 is_vf, is_netdev);
2105                                 add_f = i40e_add_filter(vsi, f->macaddr,
2106                                                         0, is_vf, is_netdev);
2107                                 if (!add_f) {
2108                                         dev_info(&vsi->back->pdev->dev,
2109                                                  "Could not add filter 0 for %pM\n",
2110                                                  f->macaddr);
2111                                         return -ENOMEM;
2112                                 }
2113                         }
2114                 }
2115         }
2116
2117         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2118             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2119                 return 0;
2120
2121         return i40e_sync_vsi_filters(vsi);
2122 }
2123
2124 /**
2125  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2126  * @vsi: the vsi being configured
2127  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2128  *
2129  * Return: 0 on success or negative otherwise
2130  **/
2131 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2132 {
2133         struct net_device *netdev = vsi->netdev;
2134         struct i40e_mac_filter *f, *add_f;
2135         bool is_vf, is_netdev;
2136         int filter_count = 0;
2137
2138         is_vf = (vsi->type == I40E_VSI_SRIOV);
2139         is_netdev = !!(netdev);
2140
2141         if (is_netdev)
2142                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2143
2144         list_for_each_entry(f, &vsi->mac_filter_list, list)
2145                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2146
2147         /* go through all the filters for this VSI and if there is only
2148          * vid == 0 it means there are no other filters, so vid 0 must
2149          * be replaced with -1. This signifies that we should from now
2150          * on accept any traffic (with any tag present, or untagged)
2151          */
2152         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2153                 if (is_netdev) {
2154                         if (f->vlan &&
2155                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2156                                 filter_count++;
2157                 }
2158
2159                 if (f->vlan)
2160                         filter_count++;
2161         }
2162
2163         if (!filter_count && is_netdev) {
2164                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2165                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2166                                     is_vf, is_netdev);
2167                 if (!f) {
2168                         dev_info(&vsi->back->pdev->dev,
2169                                  "Could not add filter %d for %pM\n",
2170                                  I40E_VLAN_ANY, netdev->dev_addr);
2171                         return -ENOMEM;
2172                 }
2173         }
2174
2175         if (!filter_count) {
2176                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2177                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2178                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2179                                             is_vf, is_netdev);
2180                         if (!add_f) {
2181                                 dev_info(&vsi->back->pdev->dev,
2182                                          "Could not add filter %d for %pM\n",
2183                                          I40E_VLAN_ANY, f->macaddr);
2184                                 return -ENOMEM;
2185                         }
2186                 }
2187         }
2188
2189         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2190             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2191                 return 0;
2192
2193         return i40e_sync_vsi_filters(vsi);
2194 }
2195
2196 /**
2197  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2198  * @netdev: network interface to be adjusted
2199  * @vid: vlan id to be added
2200  *
2201  * net_device_ops implementation for adding vlan ids
2202  **/
2203 #ifdef I40E_FCOE
2204 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2205                          __always_unused __be16 proto, u16 vid)
2206 #else
2207 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2208                                 __always_unused __be16 proto, u16 vid)
2209 #endif
2210 {
2211         struct i40e_netdev_priv *np = netdev_priv(netdev);
2212         struct i40e_vsi *vsi = np->vsi;
2213         int ret = 0;
2214
2215         if (vid > 4095)
2216                 return -EINVAL;
2217
2218         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2219
2220         /* If the network stack called us with vid = 0 then
2221          * it is asking to receive priority tagged packets with
2222          * vlan id 0.  Our HW receives them by default when configured
2223          * to receive untagged packets so there is no need to add an
2224          * extra filter for vlan 0 tagged packets.
2225          */
2226         if (vid)
2227                 ret = i40e_vsi_add_vlan(vsi, vid);
2228
2229         if (!ret && (vid < VLAN_N_VID))
2230                 set_bit(vid, vsi->active_vlans);
2231
2232         return ret;
2233 }
2234
2235 /**
2236  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2237  * @netdev: network interface to be adjusted
2238  * @vid: vlan id to be removed
2239  *
2240  * net_device_ops implementation for removing vlan ids
2241  **/
2242 #ifdef I40E_FCOE
2243 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2244                           __always_unused __be16 proto, u16 vid)
2245 #else
2246 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2247                                  __always_unused __be16 proto, u16 vid)
2248 #endif
2249 {
2250         struct i40e_netdev_priv *np = netdev_priv(netdev);
2251         struct i40e_vsi *vsi = np->vsi;
2252
2253         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2254
2255         /* return code is ignored as there is nothing a user
2256          * can do about failure to remove and a log message was
2257          * already printed from the other function
2258          */
2259         i40e_vsi_kill_vlan(vsi, vid);
2260
2261         clear_bit(vid, vsi->active_vlans);
2262
2263         return 0;
2264 }
2265
2266 /**
2267  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2268  * @vsi: the vsi being brought back up
2269  **/
2270 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2271 {
2272         u16 vid;
2273
2274         if (!vsi->netdev)
2275                 return;
2276
2277         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2278
2279         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2280                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2281                                      vid);
2282 }
2283
2284 /**
2285  * i40e_vsi_add_pvid - Add pvid for the VSI
2286  * @vsi: the vsi being adjusted
2287  * @vid: the vlan id to set as a PVID
2288  **/
2289 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2290 {
2291         struct i40e_vsi_context ctxt;
2292         i40e_status aq_ret;
2293
2294         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2295         vsi->info.pvid = cpu_to_le16(vid);
2296         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2297                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2298                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2299
2300         ctxt.seid = vsi->seid;
2301         ctxt.info = vsi->info;
2302         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2303         if (aq_ret) {
2304                 dev_info(&vsi->back->pdev->dev,
2305                          "%s: update vsi failed, aq_err=%d\n",
2306                          __func__, vsi->back->hw.aq.asq_last_status);
2307                 return -ENOENT;
2308         }
2309
2310         return 0;
2311 }
2312
2313 /**
2314  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2315  * @vsi: the vsi being adjusted
2316  *
2317  * Just use the vlan_rx_register() service to put it back to normal
2318  **/
2319 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2320 {
2321         i40e_vlan_stripping_disable(vsi);
2322
2323         vsi->info.pvid = 0;
2324 }
2325
2326 /**
2327  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2328  * @vsi: ptr to the VSI
2329  *
2330  * If this function returns with an error, then it's possible one or
2331  * more of the rings is populated (while the rest are not).  It is the
2332  * callers duty to clean those orphaned rings.
2333  *
2334  * Return 0 on success, negative on failure
2335  **/
2336 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2337 {
2338         int i, err = 0;
2339
2340         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2341                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2342
2343         return err;
2344 }
2345
2346 /**
2347  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2348  * @vsi: ptr to the VSI
2349  *
2350  * Free VSI's transmit software resources
2351  **/
2352 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2353 {
2354         int i;
2355
2356         if (!vsi->tx_rings)
2357                 return;
2358
2359         for (i = 0; i < vsi->num_queue_pairs; i++)
2360                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2361                         i40e_free_tx_resources(vsi->tx_rings[i]);
2362 }
2363
2364 /**
2365  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2366  * @vsi: ptr to the VSI
2367  *
2368  * If this function returns with an error, then it's possible one or
2369  * more of the rings is populated (while the rest are not).  It is the
2370  * callers duty to clean those orphaned rings.
2371  *
2372  * Return 0 on success, negative on failure
2373  **/
2374 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2375 {
2376         int i, err = 0;
2377
2378         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2379                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2380 #ifdef I40E_FCOE
2381         i40e_fcoe_setup_ddp_resources(vsi);
2382 #endif
2383         return err;
2384 }
2385
2386 /**
2387  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2388  * @vsi: ptr to the VSI
2389  *
2390  * Free all receive software resources
2391  **/
2392 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2393 {
2394         int i;
2395
2396         if (!vsi->rx_rings)
2397                 return;
2398
2399         for (i = 0; i < vsi->num_queue_pairs; i++)
2400                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2401                         i40e_free_rx_resources(vsi->rx_rings[i]);
2402 #ifdef I40E_FCOE
2403         i40e_fcoe_free_ddp_resources(vsi);
2404 #endif
2405 }
2406
2407 /**
2408  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2409  * @ring: The Tx ring to configure
2410  *
2411  * This enables/disables XPS for a given Tx descriptor ring
2412  * based on the TCs enabled for the VSI that ring belongs to.
2413  **/
2414 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2415 {
2416         struct i40e_vsi *vsi = ring->vsi;
2417         cpumask_var_t mask;
2418
2419         if (!ring->q_vector || !ring->netdev)
2420                 return;
2421
2422         /* Single TC mode enable XPS */
2423         if (vsi->tc_config.numtc <= 1) {
2424                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2425                         netif_set_xps_queue(ring->netdev,
2426                                             &ring->q_vector->affinity_mask,
2427                                             ring->queue_index);
2428         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2429                 /* Disable XPS to allow selection based on TC */
2430                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2431                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2432                 free_cpumask_var(mask);
2433         }
2434 }
2435
2436 /**
2437  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2438  * @ring: The Tx ring to configure
2439  *
2440  * Configure the Tx descriptor ring in the HMC context.
2441  **/
2442 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2443 {
2444         struct i40e_vsi *vsi = ring->vsi;
2445         u16 pf_q = vsi->base_queue + ring->queue_index;
2446         struct i40e_hw *hw = &vsi->back->hw;
2447         struct i40e_hmc_obj_txq tx_ctx;
2448         i40e_status err = 0;
2449         u32 qtx_ctl = 0;
2450
2451         /* some ATR related tx ring init */
2452         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2453                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2454                 ring->atr_count = 0;
2455         } else {
2456                 ring->atr_sample_rate = 0;
2457         }
2458
2459         /* configure XPS */
2460         i40e_config_xps_tx_ring(ring);
2461
2462         /* clear the context structure first */
2463         memset(&tx_ctx, 0, sizeof(tx_ctx));
2464
2465         tx_ctx.new_context = 1;
2466         tx_ctx.base = (ring->dma / 128);
2467         tx_ctx.qlen = ring->count;
2468         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2469                                                I40E_FLAG_FD_ATR_ENABLED));
2470 #ifdef I40E_FCOE
2471         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2472 #endif
2473         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2474         /* FDIR VSI tx ring can still use RS bit and writebacks */
2475         if (vsi->type != I40E_VSI_FDIR)
2476                 tx_ctx.head_wb_ena = 1;
2477         tx_ctx.head_wb_addr = ring->dma +
2478                               (ring->count * sizeof(struct i40e_tx_desc));
2479
2480         /* As part of VSI creation/update, FW allocates certain
2481          * Tx arbitration queue sets for each TC enabled for
2482          * the VSI. The FW returns the handles to these queue
2483          * sets as part of the response buffer to Add VSI,
2484          * Update VSI, etc. AQ commands. It is expected that
2485          * these queue set handles be associated with the Tx
2486          * queues by the driver as part of the TX queue context
2487          * initialization. This has to be done regardless of
2488          * DCB as by default everything is mapped to TC0.
2489          */
2490         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2491         tx_ctx.rdylist_act = 0;
2492
2493         /* clear the context in the HMC */
2494         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2495         if (err) {
2496                 dev_info(&vsi->back->pdev->dev,
2497                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2498                          ring->queue_index, pf_q, err);
2499                 return -ENOMEM;
2500         }
2501
2502         /* set the context in the HMC */
2503         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2504         if (err) {
2505                 dev_info(&vsi->back->pdev->dev,
2506                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2507                          ring->queue_index, pf_q, err);
2508                 return -ENOMEM;
2509         }
2510
2511         /* Now associate this queue with this PCI function */
2512         if (vsi->type == I40E_VSI_VMDQ2) {
2513                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2514                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2515                            I40E_QTX_CTL_VFVM_INDX_MASK;
2516         } else {
2517                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2518         }
2519
2520         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2521                     I40E_QTX_CTL_PF_INDX_MASK);
2522         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2523         i40e_flush(hw);
2524
2525         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2526
2527         /* cache tail off for easier writes later */
2528         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2529
2530         return 0;
2531 }
2532
2533 /**
2534  * i40e_configure_rx_ring - Configure a receive ring context
2535  * @ring: The Rx ring to configure
2536  *
2537  * Configure the Rx descriptor ring in the HMC context.
2538  **/
2539 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2540 {
2541         struct i40e_vsi *vsi = ring->vsi;
2542         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2543         u16 pf_q = vsi->base_queue + ring->queue_index;
2544         struct i40e_hw *hw = &vsi->back->hw;
2545         struct i40e_hmc_obj_rxq rx_ctx;
2546         i40e_status err = 0;
2547
2548         ring->state = 0;
2549
2550         /* clear the context structure first */
2551         memset(&rx_ctx, 0, sizeof(rx_ctx));
2552
2553         ring->rx_buf_len = vsi->rx_buf_len;
2554         ring->rx_hdr_len = vsi->rx_hdr_len;
2555
2556         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2557         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2558
2559         rx_ctx.base = (ring->dma / 128);
2560         rx_ctx.qlen = ring->count;
2561
2562         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2563                 set_ring_16byte_desc_enabled(ring);
2564                 rx_ctx.dsize = 0;
2565         } else {
2566                 rx_ctx.dsize = 1;
2567         }
2568
2569         rx_ctx.dtype = vsi->dtype;
2570         if (vsi->dtype) {
2571                 set_ring_ps_enabled(ring);
2572                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2573                                   I40E_RX_SPLIT_IP      |
2574                                   I40E_RX_SPLIT_TCP_UDP |
2575                                   I40E_RX_SPLIT_SCTP;
2576         } else {
2577                 rx_ctx.hsplit_0 = 0;
2578         }
2579
2580         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2581                                   (chain_len * ring->rx_buf_len));
2582         if (hw->revision_id == 0)
2583                 rx_ctx.lrxqthresh = 0;
2584         else
2585                 rx_ctx.lrxqthresh = 2;
2586         rx_ctx.crcstrip = 1;
2587         rx_ctx.l2tsel = 1;
2588         rx_ctx.showiv = 1;
2589 #ifdef I40E_FCOE
2590         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2591 #endif
2592         /* set the prefena field to 1 because the manual says to */
2593         rx_ctx.prefena = 1;
2594
2595         /* clear the context in the HMC */
2596         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2597         if (err) {
2598                 dev_info(&vsi->back->pdev->dev,
2599                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2600                          ring->queue_index, pf_q, err);
2601                 return -ENOMEM;
2602         }
2603
2604         /* set the context in the HMC */
2605         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2606         if (err) {
2607                 dev_info(&vsi->back->pdev->dev,
2608                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2609                          ring->queue_index, pf_q, err);
2610                 return -ENOMEM;
2611         }
2612
2613         /* cache tail for quicker writes, and clear the reg before use */
2614         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2615         writel(0, ring->tail);
2616
2617         if (ring_is_ps_enabled(ring)) {
2618                 i40e_alloc_rx_headers(ring);
2619                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2620         } else {
2621                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2622         }
2623
2624         return 0;
2625 }
2626
2627 /**
2628  * i40e_vsi_configure_tx - Configure the VSI for Tx
2629  * @vsi: VSI structure describing this set of rings and resources
2630  *
2631  * Configure the Tx VSI for operation.
2632  **/
2633 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2634 {
2635         int err = 0;
2636         u16 i;
2637
2638         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2639                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2640
2641         return err;
2642 }
2643
2644 /**
2645  * i40e_vsi_configure_rx - Configure the VSI for Rx
2646  * @vsi: the VSI being configured
2647  *
2648  * Configure the Rx VSI for operation.
2649  **/
2650 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2651 {
2652         int err = 0;
2653         u16 i;
2654
2655         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2656                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2657                                + ETH_FCS_LEN + VLAN_HLEN;
2658         else
2659                 vsi->max_frame = I40E_RXBUFFER_2048;
2660
2661         /* figure out correct receive buffer length */
2662         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2663                                     I40E_FLAG_RX_PS_ENABLED)) {
2664         case I40E_FLAG_RX_1BUF_ENABLED:
2665                 vsi->rx_hdr_len = 0;
2666                 vsi->rx_buf_len = vsi->max_frame;
2667                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2668                 break;
2669         case I40E_FLAG_RX_PS_ENABLED:
2670                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2671                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2672                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2673                 break;
2674         default:
2675                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2676                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2677                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2678                 break;
2679         }
2680
2681 #ifdef I40E_FCOE
2682         /* setup rx buffer for FCoE */
2683         if ((vsi->type == I40E_VSI_FCOE) &&
2684             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2685                 vsi->rx_hdr_len = 0;
2686                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2687                 vsi->max_frame = I40E_RXBUFFER_3072;
2688                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2689         }
2690
2691 #endif /* I40E_FCOE */
2692         /* round up for the chip's needs */
2693         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2694                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2695         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2696                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2697
2698         /* set up individual rings */
2699         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2700                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2701
2702         return err;
2703 }
2704
2705 /**
2706  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2707  * @vsi: ptr to the VSI
2708  **/
2709 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2710 {
2711         struct i40e_ring *tx_ring, *rx_ring;
2712         u16 qoffset, qcount;
2713         int i, n;
2714
2715         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2716                 /* Reset the TC information */
2717                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2718                         rx_ring = vsi->rx_rings[i];
2719                         tx_ring = vsi->tx_rings[i];
2720                         rx_ring->dcb_tc = 0;
2721                         tx_ring->dcb_tc = 0;
2722                 }
2723         }
2724
2725         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2726                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2727                         continue;
2728
2729                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2730                 qcount = vsi->tc_config.tc_info[n].qcount;
2731                 for (i = qoffset; i < (qoffset + qcount); i++) {
2732                         rx_ring = vsi->rx_rings[i];
2733                         tx_ring = vsi->tx_rings[i];
2734                         rx_ring->dcb_tc = n;
2735                         tx_ring->dcb_tc = n;
2736                 }
2737         }
2738 }
2739
2740 /**
2741  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2742  * @vsi: ptr to the VSI
2743  **/
2744 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2745 {
2746         if (vsi->netdev)
2747                 i40e_set_rx_mode(vsi->netdev);
2748 }
2749
2750 /**
2751  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2752  * @vsi: Pointer to the targeted VSI
2753  *
2754  * This function replays the hlist on the hw where all the SB Flow Director
2755  * filters were saved.
2756  **/
2757 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2758 {
2759         struct i40e_fdir_filter *filter;
2760         struct i40e_pf *pf = vsi->back;
2761         struct hlist_node *node;
2762
2763         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2764                 return;
2765
2766         hlist_for_each_entry_safe(filter, node,
2767                                   &pf->fdir_filter_list, fdir_node) {
2768                 i40e_add_del_fdir(vsi, filter, true);
2769         }
2770 }
2771
2772 /**
2773  * i40e_vsi_configure - Set up the VSI for action
2774  * @vsi: the VSI being configured
2775  **/
2776 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2777 {
2778         int err;
2779
2780         i40e_set_vsi_rx_mode(vsi);
2781         i40e_restore_vlan(vsi);
2782         i40e_vsi_config_dcb_rings(vsi);
2783         err = i40e_vsi_configure_tx(vsi);
2784         if (!err)
2785                 err = i40e_vsi_configure_rx(vsi);
2786
2787         return err;
2788 }
2789
2790 /**
2791  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2792  * @vsi: the VSI being configured
2793  **/
2794 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2795 {
2796         struct i40e_pf *pf = vsi->back;
2797         struct i40e_q_vector *q_vector;
2798         struct i40e_hw *hw = &pf->hw;
2799         u16 vector;
2800         int i, q;
2801         u32 val;
2802         u32 qp;
2803
2804         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2805          * and PFINT_LNKLSTn registers, e.g.:
2806          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2807          */
2808         qp = vsi->base_queue;
2809         vector = vsi->base_vector;
2810         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2811                 q_vector = vsi->q_vectors[i];
2812                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2813                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2814                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2815                      q_vector->rx.itr);
2816                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2817                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2818                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2819                      q_vector->tx.itr);
2820
2821                 /* Linked list for the queuepairs assigned to this vector */
2822                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2823                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2824                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2825                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2826                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2827                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2828                               (I40E_QUEUE_TYPE_TX
2829                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2830
2831                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2832
2833                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2834                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2835                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2836                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2837                               (I40E_QUEUE_TYPE_RX
2838                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2839
2840                         /* Terminate the linked list */
2841                         if (q == (q_vector->num_ringpairs - 1))
2842                                 val |= (I40E_QUEUE_END_OF_LIST
2843                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2844
2845                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2846                         qp++;
2847                 }
2848         }
2849
2850         i40e_flush(hw);
2851 }
2852
2853 /**
2854  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2855  * @hw: ptr to the hardware info
2856  **/
2857 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2858 {
2859         struct i40e_hw *hw = &pf->hw;
2860         u32 val;
2861
2862         /* clear things first */
2863         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2864         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2865
2866         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2867               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2868               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2869               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2870               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2871               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2872               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2873               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2874
2875         if (pf->flags & I40E_FLAG_PTP)
2876                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2877
2878         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2879
2880         /* SW_ITR_IDX = 0, but don't change INTENA */
2881         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2882                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2883
2884         /* OTHER_ITR_IDX = 0 */
2885         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2886 }
2887
2888 /**
2889  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2890  * @vsi: the VSI being configured
2891  **/
2892 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2893 {
2894         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2895         struct i40e_pf *pf = vsi->back;
2896         struct i40e_hw *hw = &pf->hw;
2897         u32 val;
2898
2899         /* set the ITR configuration */
2900         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2901         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2902         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2903         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2904         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2905         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2906
2907         i40e_enable_misc_int_causes(pf);
2908
2909         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2910         wr32(hw, I40E_PFINT_LNKLST0, 0);
2911
2912         /* Associate the queue pair to the vector and enable the queue int */
2913         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2914               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2915               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2916
2917         wr32(hw, I40E_QINT_RQCTL(0), val);
2918
2919         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2920               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2921               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2922
2923         wr32(hw, I40E_QINT_TQCTL(0), val);
2924         i40e_flush(hw);
2925 }
2926
2927 /**
2928  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2929  * @pf: board private structure
2930  **/
2931 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2932 {
2933         struct i40e_hw *hw = &pf->hw;
2934
2935         wr32(hw, I40E_PFINT_DYN_CTL0,
2936              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2937         i40e_flush(hw);
2938 }
2939
2940 /**
2941  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2942  * @pf: board private structure
2943  **/
2944 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2945 {
2946         struct i40e_hw *hw = &pf->hw;
2947         u32 val;
2948
2949         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2950               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2951               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2952
2953         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2954         i40e_flush(hw);
2955 }
2956
2957 /**
2958  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2959  * @vsi: pointer to a vsi
2960  * @vector: enable a particular Hw Interrupt vector
2961  **/
2962 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2963 {
2964         struct i40e_pf *pf = vsi->back;
2965         struct i40e_hw *hw = &pf->hw;
2966         u32 val;
2967
2968         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2969               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2970               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2971         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2972         /* skip the flush */
2973 }
2974
2975 /**
2976  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
2977  * @vsi: pointer to a vsi
2978  * @vector: disable a particular Hw Interrupt vector
2979  **/
2980 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
2981 {
2982         struct i40e_pf *pf = vsi->back;
2983         struct i40e_hw *hw = &pf->hw;
2984         u32 val;
2985
2986         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
2987         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2988         i40e_flush(hw);
2989 }
2990
2991 /**
2992  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2993  * @irq: interrupt number
2994  * @data: pointer to a q_vector
2995  **/
2996 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2997 {
2998         struct i40e_q_vector *q_vector = data;
2999
3000         if (!q_vector->tx.ring && !q_vector->rx.ring)
3001                 return IRQ_HANDLED;
3002
3003         napi_schedule(&q_vector->napi);
3004
3005         return IRQ_HANDLED;
3006 }
3007
3008 /**
3009  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3010  * @vsi: the VSI being configured
3011  * @basename: name for the vector
3012  *
3013  * Allocates MSI-X vectors and requests interrupts from the kernel.
3014  **/
3015 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3016 {
3017         int q_vectors = vsi->num_q_vectors;
3018         struct i40e_pf *pf = vsi->back;
3019         int base = vsi->base_vector;
3020         int rx_int_idx = 0;
3021         int tx_int_idx = 0;
3022         int vector, err;
3023
3024         for (vector = 0; vector < q_vectors; vector++) {
3025                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3026
3027                 if (q_vector->tx.ring && q_vector->rx.ring) {
3028                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3029                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3030                         tx_int_idx++;
3031                 } else if (q_vector->rx.ring) {
3032                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3033                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3034                 } else if (q_vector->tx.ring) {
3035                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3036                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3037                 } else {
3038                         /* skip this unused q_vector */
3039                         continue;
3040                 }
3041                 err = request_irq(pf->msix_entries[base + vector].vector,
3042                                   vsi->irq_handler,
3043                                   0,
3044                                   q_vector->name,
3045                                   q_vector);
3046                 if (err) {
3047                         dev_info(&pf->pdev->dev,
3048                                  "%s: request_irq failed, error: %d\n",
3049                                  __func__, err);
3050                         goto free_queue_irqs;
3051                 }
3052                 /* assign the mask for this irq */
3053                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3054                                       &q_vector->affinity_mask);
3055         }
3056
3057         vsi->irqs_ready = true;
3058         return 0;
3059
3060 free_queue_irqs:
3061         while (vector) {
3062                 vector--;
3063                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3064                                       NULL);
3065                 free_irq(pf->msix_entries[base + vector].vector,
3066                          &(vsi->q_vectors[vector]));
3067         }
3068         return err;
3069 }
3070
3071 /**
3072  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3073  * @vsi: the VSI being un-configured
3074  **/
3075 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3076 {
3077         struct i40e_pf *pf = vsi->back;
3078         struct i40e_hw *hw = &pf->hw;
3079         int base = vsi->base_vector;
3080         int i;
3081
3082         for (i = 0; i < vsi->num_queue_pairs; i++) {
3083                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3084                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3085         }
3086
3087         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3088                 for (i = vsi->base_vector;
3089                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3090                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3091
3092                 i40e_flush(hw);
3093                 for (i = 0; i < vsi->num_q_vectors; i++)
3094                         synchronize_irq(pf->msix_entries[i + base].vector);
3095         } else {
3096                 /* Legacy and MSI mode - this stops all interrupt handling */
3097                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3098                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3099                 i40e_flush(hw);
3100                 synchronize_irq(pf->pdev->irq);
3101         }
3102 }
3103
3104 /**
3105  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3106  * @vsi: the VSI being configured
3107  **/
3108 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3109 {
3110         struct i40e_pf *pf = vsi->back;
3111         int i;
3112
3113         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3114                 for (i = vsi->base_vector;
3115                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3116                         i40e_irq_dynamic_enable(vsi, i);
3117         } else {
3118                 i40e_irq_dynamic_enable_icr0(pf);
3119         }
3120
3121         i40e_flush(&pf->hw);
3122         return 0;
3123 }
3124
3125 /**
3126  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3127  * @pf: board private structure
3128  **/
3129 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3130 {
3131         /* Disable ICR 0 */
3132         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3133         i40e_flush(&pf->hw);
3134 }
3135
3136 /**
3137  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3138  * @irq: interrupt number
3139  * @data: pointer to a q_vector
3140  *
3141  * This is the handler used for all MSI/Legacy interrupts, and deals
3142  * with both queue and non-queue interrupts.  This is also used in
3143  * MSIX mode to handle the non-queue interrupts.
3144  **/
3145 static irqreturn_t i40e_intr(int irq, void *data)
3146 {
3147         struct i40e_pf *pf = (struct i40e_pf *)data;
3148         struct i40e_hw *hw = &pf->hw;
3149         irqreturn_t ret = IRQ_NONE;
3150         u32 icr0, icr0_remaining;
3151         u32 val, ena_mask;
3152
3153         icr0 = rd32(hw, I40E_PFINT_ICR0);
3154         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3155
3156         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3157         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3158                 goto enable_intr;
3159
3160         /* if interrupt but no bits showing, must be SWINT */
3161         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3162             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3163                 pf->sw_int_count++;
3164
3165         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3166         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3167
3168                 /* temporarily disable queue cause for NAPI processing */
3169                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3170                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3171                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3172
3173                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3174                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3175                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3176
3177                 if (!test_bit(__I40E_DOWN, &pf->state))
3178                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3179         }
3180
3181         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3182                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3183                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3184         }
3185
3186         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3187                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3188                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3189         }
3190
3191         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3192                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3193                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3194         }
3195
3196         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3197                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3198                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3199                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3200                 val = rd32(hw, I40E_GLGEN_RSTAT);
3201                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3202                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3203                 if (val == I40E_RESET_CORER) {
3204                         pf->corer_count++;
3205                 } else if (val == I40E_RESET_GLOBR) {
3206                         pf->globr_count++;
3207                 } else if (val == I40E_RESET_EMPR) {
3208                         pf->empr_count++;
3209                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3210                 }
3211         }
3212
3213         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3214                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3215                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3216                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3217                          rd32(hw, I40E_PFHMC_ERRORINFO),
3218                          rd32(hw, I40E_PFHMC_ERRORDATA));
3219         }
3220
3221         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3222                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3223
3224                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3225                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3226                         i40e_ptp_tx_hwtstamp(pf);
3227                 }
3228         }
3229
3230         /* If a critical error is pending we have no choice but to reset the
3231          * device.
3232          * Report and mask out any remaining unexpected interrupts.
3233          */
3234         icr0_remaining = icr0 & ena_mask;
3235         if (icr0_remaining) {
3236                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3237                          icr0_remaining);
3238                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3239                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3240                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3241                         dev_info(&pf->pdev->dev, "device will be reset\n");
3242                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3243                         i40e_service_event_schedule(pf);
3244                 }
3245                 ena_mask &= ~icr0_remaining;
3246         }
3247         ret = IRQ_HANDLED;
3248
3249 enable_intr:
3250         /* re-enable interrupt causes */
3251         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3252         if (!test_bit(__I40E_DOWN, &pf->state)) {
3253                 i40e_service_event_schedule(pf);
3254                 i40e_irq_dynamic_enable_icr0(pf);
3255         }
3256
3257         return ret;
3258 }
3259
3260 /**
3261  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3262  * @tx_ring:  tx ring to clean
3263  * @budget:   how many cleans we're allowed
3264  *
3265  * Returns true if there's any budget left (e.g. the clean is finished)
3266  **/
3267 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3268 {
3269         struct i40e_vsi *vsi = tx_ring->vsi;
3270         u16 i = tx_ring->next_to_clean;
3271         struct i40e_tx_buffer *tx_buf;
3272         struct i40e_tx_desc *tx_desc;
3273
3274         tx_buf = &tx_ring->tx_bi[i];
3275         tx_desc = I40E_TX_DESC(tx_ring, i);
3276         i -= tx_ring->count;
3277
3278         do {
3279                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3280
3281                 /* if next_to_watch is not set then there is no work pending */
3282                 if (!eop_desc)
3283                         break;
3284
3285                 /* prevent any other reads prior to eop_desc */
3286                 read_barrier_depends();
3287
3288                 /* if the descriptor isn't done, no work yet to do */
3289                 if (!(eop_desc->cmd_type_offset_bsz &
3290                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3291                         break;
3292
3293                 /* clear next_to_watch to prevent false hangs */
3294                 tx_buf->next_to_watch = NULL;
3295
3296                 tx_desc->buffer_addr = 0;
3297                 tx_desc->cmd_type_offset_bsz = 0;
3298                 /* move past filter desc */
3299                 tx_buf++;
3300                 tx_desc++;
3301                 i++;
3302                 if (unlikely(!i)) {
3303                         i -= tx_ring->count;
3304                         tx_buf = tx_ring->tx_bi;
3305                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3306                 }
3307                 /* unmap skb header data */
3308                 dma_unmap_single(tx_ring->dev,
3309                                  dma_unmap_addr(tx_buf, dma),
3310                                  dma_unmap_len(tx_buf, len),
3311                                  DMA_TO_DEVICE);
3312                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3313                         kfree(tx_buf->raw_buf);
3314
3315                 tx_buf->raw_buf = NULL;
3316                 tx_buf->tx_flags = 0;
3317                 tx_buf->next_to_watch = NULL;
3318                 dma_unmap_len_set(tx_buf, len, 0);
3319                 tx_desc->buffer_addr = 0;
3320                 tx_desc->cmd_type_offset_bsz = 0;
3321
3322                 /* move us past the eop_desc for start of next FD desc */
3323                 tx_buf++;
3324                 tx_desc++;
3325                 i++;
3326                 if (unlikely(!i)) {
3327                         i -= tx_ring->count;
3328                         tx_buf = tx_ring->tx_bi;
3329                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3330                 }
3331
3332                 /* update budget accounting */
3333                 budget--;
3334         } while (likely(budget));
3335
3336         i += tx_ring->count;
3337         tx_ring->next_to_clean = i;
3338
3339         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3340                 i40e_irq_dynamic_enable(vsi,
3341                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3342         }
3343         return budget > 0;
3344 }
3345
3346 /**
3347  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3348  * @irq: interrupt number
3349  * @data: pointer to a q_vector
3350  **/
3351 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3352 {
3353         struct i40e_q_vector *q_vector = data;
3354         struct i40e_vsi *vsi;
3355
3356         if (!q_vector->tx.ring)
3357                 return IRQ_HANDLED;
3358
3359         vsi = q_vector->tx.ring->vsi;
3360         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3361
3362         return IRQ_HANDLED;
3363 }
3364
3365 /**
3366  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3367  * @vsi: the VSI being configured
3368  * @v_idx: vector index
3369  * @qp_idx: queue pair index
3370  **/
3371 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3372 {
3373         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3374         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3375         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3376
3377         tx_ring->q_vector = q_vector;
3378         tx_ring->next = q_vector->tx.ring;
3379         q_vector->tx.ring = tx_ring;
3380         q_vector->tx.count++;
3381
3382         rx_ring->q_vector = q_vector;
3383         rx_ring->next = q_vector->rx.ring;
3384         q_vector->rx.ring = rx_ring;
3385         q_vector->rx.count++;
3386 }
3387
3388 /**
3389  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3390  * @vsi: the VSI being configured
3391  *
3392  * This function maps descriptor rings to the queue-specific vectors
3393  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3394  * one vector per queue pair, but on a constrained vector budget, we
3395  * group the queue pairs as "efficiently" as possible.
3396  **/
3397 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3398 {
3399         int qp_remaining = vsi->num_queue_pairs;
3400         int q_vectors = vsi->num_q_vectors;
3401         int num_ringpairs;
3402         int v_start = 0;
3403         int qp_idx = 0;
3404
3405         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3406          * group them so there are multiple queues per vector.
3407          * It is also important to go through all the vectors available to be
3408          * sure that if we don't use all the vectors, that the remaining vectors
3409          * are cleared. This is especially important when decreasing the
3410          * number of queues in use.
3411          */
3412         for (; v_start < q_vectors; v_start++) {
3413                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3414
3415                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3416
3417                 q_vector->num_ringpairs = num_ringpairs;
3418
3419                 q_vector->rx.count = 0;
3420                 q_vector->tx.count = 0;
3421                 q_vector->rx.ring = NULL;
3422                 q_vector->tx.ring = NULL;
3423
3424                 while (num_ringpairs--) {
3425                         map_vector_to_qp(vsi, v_start, qp_idx);
3426                         qp_idx++;
3427                         qp_remaining--;
3428                 }
3429         }
3430 }
3431
3432 /**
3433  * i40e_vsi_request_irq - Request IRQ from the OS
3434  * @vsi: the VSI being configured
3435  * @basename: name for the vector
3436  **/
3437 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3438 {
3439         struct i40e_pf *pf = vsi->back;
3440         int err;
3441
3442         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3443                 err = i40e_vsi_request_irq_msix(vsi, basename);
3444         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3445                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3446                                   pf->int_name, pf);
3447         else
3448                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3449                                   pf->int_name, pf);
3450
3451         if (err)
3452                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3453
3454         return err;
3455 }
3456
3457 #ifdef CONFIG_NET_POLL_CONTROLLER
3458 /**
3459  * i40e_netpoll - A Polling 'interrupt'handler
3460  * @netdev: network interface device structure
3461  *
3462  * This is used by netconsole to send skbs without having to re-enable
3463  * interrupts.  It's not called while the normal interrupt routine is executing.
3464  **/
3465 #ifdef I40E_FCOE
3466 void i40e_netpoll(struct net_device *netdev)
3467 #else
3468 static void i40e_netpoll(struct net_device *netdev)
3469 #endif
3470 {
3471         struct i40e_netdev_priv *np = netdev_priv(netdev);
3472         struct i40e_vsi *vsi = np->vsi;
3473         struct i40e_pf *pf = vsi->back;
3474         int i;
3475
3476         /* if interface is down do nothing */
3477         if (test_bit(__I40E_DOWN, &vsi->state))
3478                 return;
3479
3480         pf->flags |= I40E_FLAG_IN_NETPOLL;
3481         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3482                 for (i = 0; i < vsi->num_q_vectors; i++)
3483                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3484         } else {
3485                 i40e_intr(pf->pdev->irq, netdev);
3486         }
3487         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3488 }
3489 #endif
3490
3491 /**
3492  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3493  * @pf: the PF being configured
3494  * @pf_q: the PF queue
3495  * @enable: enable or disable state of the queue
3496  *
3497  * This routine will wait for the given Tx queue of the PF to reach the
3498  * enabled or disabled state.
3499  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3500  * multiple retries; else will return 0 in case of success.
3501  **/
3502 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3503 {
3504         int i;
3505         u32 tx_reg;
3506
3507         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3508                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3509                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3510                         break;
3511
3512                 usleep_range(10, 20);
3513         }
3514         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3515                 return -ETIMEDOUT;
3516
3517         return 0;
3518 }
3519
3520 /**
3521  * i40e_vsi_control_tx - Start or stop a VSI's rings
3522  * @vsi: the VSI being configured
3523  * @enable: start or stop the rings
3524  **/
3525 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3526 {
3527         struct i40e_pf *pf = vsi->back;
3528         struct i40e_hw *hw = &pf->hw;
3529         int i, j, pf_q, ret = 0;
3530         u32 tx_reg;
3531
3532         pf_q = vsi->base_queue;
3533         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3534
3535                 /* warn the TX unit of coming changes */
3536                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3537                 if (!enable)
3538                         usleep_range(10, 20);
3539
3540                 for (j = 0; j < 50; j++) {
3541                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3542                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3543                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3544                                 break;
3545                         usleep_range(1000, 2000);
3546                 }
3547                 /* Skip if the queue is already in the requested state */
3548                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3549                         continue;
3550
3551                 /* turn on/off the queue */
3552                 if (enable) {
3553                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3554                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3555                 } else {
3556                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3557                 }
3558
3559                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3560                 /* No waiting for the Tx queue to disable */
3561                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3562                         continue;
3563
3564                 /* wait for the change to finish */
3565                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3566                 if (ret) {
3567                         dev_info(&pf->pdev->dev,
3568                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3569                                  __func__, vsi->seid, pf_q,
3570                                  (enable ? "en" : "dis"));
3571                         break;
3572                 }
3573         }
3574
3575         if (hw->revision_id == 0)
3576                 mdelay(50);
3577         return ret;
3578 }
3579
3580 /**
3581  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3582  * @pf: the PF being configured
3583  * @pf_q: the PF queue
3584  * @enable: enable or disable state of the queue
3585  *
3586  * This routine will wait for the given Rx queue of the PF to reach the
3587  * enabled or disabled state.
3588  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3589  * multiple retries; else will return 0 in case of success.
3590  **/
3591 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3592 {
3593         int i;
3594         u32 rx_reg;
3595
3596         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3597                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3598                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3599                         break;
3600
3601                 usleep_range(10, 20);
3602         }
3603         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3604                 return -ETIMEDOUT;
3605
3606         return 0;
3607 }
3608
3609 /**
3610  * i40e_vsi_control_rx - Start or stop a VSI's rings
3611  * @vsi: the VSI being configured
3612  * @enable: start or stop the rings
3613  **/
3614 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3615 {
3616         struct i40e_pf *pf = vsi->back;
3617         struct i40e_hw *hw = &pf->hw;
3618         int i, j, pf_q, ret = 0;
3619         u32 rx_reg;
3620
3621         pf_q = vsi->base_queue;
3622         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3623                 for (j = 0; j < 50; j++) {
3624                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3625                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3626                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3627                                 break;
3628                         usleep_range(1000, 2000);
3629                 }
3630
3631                 /* Skip if the queue is already in the requested state */
3632                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3633                         continue;
3634
3635                 /* turn on/off the queue */
3636                 if (enable)
3637                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3638                 else
3639                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3640                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3641
3642                 /* wait for the change to finish */
3643                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3644                 if (ret) {
3645                         dev_info(&pf->pdev->dev,
3646                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3647                                  __func__, vsi->seid, pf_q,
3648                                  (enable ? "en" : "dis"));
3649                         break;
3650                 }
3651         }
3652
3653         return ret;
3654 }
3655
3656 /**
3657  * i40e_vsi_control_rings - Start or stop a VSI's rings
3658  * @vsi: the VSI being configured
3659  * @enable: start or stop the rings
3660  **/
3661 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3662 {
3663         int ret = 0;
3664
3665         /* do rx first for enable and last for disable */
3666         if (request) {
3667                 ret = i40e_vsi_control_rx(vsi, request);
3668                 if (ret)
3669                         return ret;
3670                 ret = i40e_vsi_control_tx(vsi, request);
3671         } else {
3672                 /* Ignore return value, we need to shutdown whatever we can */
3673                 i40e_vsi_control_tx(vsi, request);
3674                 i40e_vsi_control_rx(vsi, request);
3675         }
3676
3677         return ret;
3678 }
3679
3680 /**
3681  * i40e_vsi_free_irq - Free the irq association with the OS
3682  * @vsi: the VSI being configured
3683  **/
3684 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3685 {
3686         struct i40e_pf *pf = vsi->back;
3687         struct i40e_hw *hw = &pf->hw;
3688         int base = vsi->base_vector;
3689         u32 val, qp;
3690         int i;
3691
3692         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3693                 if (!vsi->q_vectors)
3694                         return;
3695
3696                 if (!vsi->irqs_ready)
3697                         return;
3698
3699                 vsi->irqs_ready = false;
3700                 for (i = 0; i < vsi->num_q_vectors; i++) {
3701                         u16 vector = i + base;
3702
3703                         /* free only the irqs that were actually requested */
3704                         if (!vsi->q_vectors[i] ||
3705                             !vsi->q_vectors[i]->num_ringpairs)
3706                                 continue;
3707
3708                         /* clear the affinity_mask in the IRQ descriptor */
3709                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3710                                               NULL);
3711                         free_irq(pf->msix_entries[vector].vector,
3712                                  vsi->q_vectors[i]);
3713
3714                         /* Tear down the interrupt queue link list
3715                          *
3716                          * We know that they come in pairs and always
3717                          * the Rx first, then the Tx.  To clear the
3718                          * link list, stick the EOL value into the
3719                          * next_q field of the registers.
3720                          */
3721                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3722                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3723                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3724                         val |= I40E_QUEUE_END_OF_LIST
3725                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3726                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3727
3728                         while (qp != I40E_QUEUE_END_OF_LIST) {
3729                                 u32 next;
3730
3731                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3732
3733                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3734                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3735                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3736                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3737
3738                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3739                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3740
3741                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3742
3743                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3744
3745                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3746                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3747
3748                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3749                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3750                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3751                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3752
3753                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3754                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3755
3756                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3757                                 qp = next;
3758                         }
3759                 }
3760         } else {
3761                 free_irq(pf->pdev->irq, pf);
3762
3763                 val = rd32(hw, I40E_PFINT_LNKLST0);
3764                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3765                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3766                 val |= I40E_QUEUE_END_OF_LIST
3767                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3768                 wr32(hw, I40E_PFINT_LNKLST0, val);
3769
3770                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3771                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3772                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3773                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3774                          I40E_QINT_RQCTL_INTEVENT_MASK);
3775
3776                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3777                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3778
3779                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3780
3781                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3782
3783                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3784                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3785                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3786                          I40E_QINT_TQCTL_INTEVENT_MASK);
3787
3788                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3789                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3790
3791                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3792         }
3793 }
3794
3795 /**
3796  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3797  * @vsi: the VSI being configured
3798  * @v_idx: Index of vector to be freed
3799  *
3800  * This function frees the memory allocated to the q_vector.  In addition if
3801  * NAPI is enabled it will delete any references to the NAPI struct prior
3802  * to freeing the q_vector.
3803  **/
3804 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3805 {
3806         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3807         struct i40e_ring *ring;
3808
3809         if (!q_vector)
3810                 return;
3811
3812         /* disassociate q_vector from rings */
3813         i40e_for_each_ring(ring, q_vector->tx)
3814                 ring->q_vector = NULL;
3815
3816         i40e_for_each_ring(ring, q_vector->rx)
3817                 ring->q_vector = NULL;
3818
3819         /* only VSI w/ an associated netdev is set up w/ NAPI */
3820         if (vsi->netdev)
3821                 netif_napi_del(&q_vector->napi);
3822
3823         vsi->q_vectors[v_idx] = NULL;
3824
3825         kfree_rcu(q_vector, rcu);
3826 }
3827
3828 /**
3829  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3830  * @vsi: the VSI being un-configured
3831  *
3832  * This frees the memory allocated to the q_vectors and
3833  * deletes references to the NAPI struct.
3834  **/
3835 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3836 {
3837         int v_idx;
3838
3839         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3840                 i40e_free_q_vector(vsi, v_idx);
3841 }
3842
3843 /**
3844  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3845  * @pf: board private structure
3846  **/
3847 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3848 {
3849         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3850         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3851                 pci_disable_msix(pf->pdev);
3852                 kfree(pf->msix_entries);
3853                 pf->msix_entries = NULL;
3854                 kfree(pf->irq_pile);
3855                 pf->irq_pile = NULL;
3856         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3857                 pci_disable_msi(pf->pdev);
3858         }
3859         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3860 }
3861
3862 /**
3863  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3864  * @pf: board private structure
3865  *
3866  * We go through and clear interrupt specific resources and reset the structure
3867  * to pre-load conditions
3868  **/
3869 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3870 {
3871         int i;
3872
3873         i40e_stop_misc_vector(pf);
3874         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3875                 synchronize_irq(pf->msix_entries[0].vector);
3876                 free_irq(pf->msix_entries[0].vector, pf);
3877         }
3878
3879         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3880         for (i = 0; i < pf->num_alloc_vsi; i++)
3881                 if (pf->vsi[i])
3882                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3883         i40e_reset_interrupt_capability(pf);
3884 }
3885
3886 /**
3887  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3888  * @vsi: the VSI being configured
3889  **/
3890 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3891 {
3892         int q_idx;
3893
3894         if (!vsi->netdev)
3895                 return;
3896
3897         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3898                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3899 }
3900
3901 /**
3902  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3903  * @vsi: the VSI being configured
3904  **/
3905 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3906 {
3907         int q_idx;
3908
3909         if (!vsi->netdev)
3910                 return;
3911
3912         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3913                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3914 }
3915
3916 /**
3917  * i40e_vsi_close - Shut down a VSI
3918  * @vsi: the vsi to be quelled
3919  **/
3920 static void i40e_vsi_close(struct i40e_vsi *vsi)
3921 {
3922         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3923                 i40e_down(vsi);
3924         i40e_vsi_free_irq(vsi);
3925         i40e_vsi_free_tx_resources(vsi);
3926         i40e_vsi_free_rx_resources(vsi);
3927 }
3928
3929 /**
3930  * i40e_quiesce_vsi - Pause a given VSI
3931  * @vsi: the VSI being paused
3932  **/
3933 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3934 {
3935         if (test_bit(__I40E_DOWN, &vsi->state))
3936                 return;
3937
3938         /* No need to disable FCoE VSI when Tx suspended */
3939         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
3940             vsi->type == I40E_VSI_FCOE) {
3941                 dev_dbg(&vsi->back->pdev->dev,
3942                         "%s: VSI seid %d skipping FCoE VSI disable\n",
3943                          __func__, vsi->seid);
3944                 return;
3945         }
3946
3947         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3948         if (vsi->netdev && netif_running(vsi->netdev)) {
3949                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3950         } else {
3951                 i40e_vsi_close(vsi);
3952         }
3953 }
3954
3955 /**
3956  * i40e_unquiesce_vsi - Resume a given VSI
3957  * @vsi: the VSI being resumed
3958  **/
3959 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3960 {
3961         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3962                 return;
3963
3964         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3965         if (vsi->netdev && netif_running(vsi->netdev))
3966                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3967         else
3968                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
3969 }
3970
3971 /**
3972  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3973  * @pf: the PF
3974  **/
3975 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3976 {
3977         int v;
3978
3979         for (v = 0; v < pf->num_alloc_vsi; v++) {
3980                 if (pf->vsi[v])
3981                         i40e_quiesce_vsi(pf->vsi[v]);
3982         }
3983 }
3984
3985 /**
3986  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3987  * @pf: the PF
3988  **/
3989 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3990 {
3991         int v;
3992
3993         for (v = 0; v < pf->num_alloc_vsi; v++) {
3994                 if (pf->vsi[v])
3995                         i40e_unquiesce_vsi(pf->vsi[v]);
3996         }
3997 }
3998
3999 #ifdef CONFIG_I40E_DCB
4000 /**
4001  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4002  * @vsi: the VSI being configured
4003  *
4004  * This function waits for the given VSI's Tx queues to be disabled.
4005  **/
4006 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4007 {
4008         struct i40e_pf *pf = vsi->back;
4009         int i, pf_q, ret;
4010
4011         pf_q = vsi->base_queue;
4012         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4013                 /* Check and wait for the disable status of the queue */
4014                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4015                 if (ret) {
4016                         dev_info(&pf->pdev->dev,
4017                                  "%s: VSI seid %d Tx ring %d disable timeout\n",
4018                                  __func__, vsi->seid, pf_q);
4019                         return ret;
4020                 }
4021         }
4022
4023         return 0;
4024 }
4025
4026 /**
4027  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4028  * @pf: the PF
4029  *
4030  * This function waits for the Tx queues to be in disabled state for all the
4031  * VSIs that are managed by this PF.
4032  **/
4033 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4034 {
4035         int v, ret = 0;
4036
4037         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4038                 /* No need to wait for FCoE VSI queues */
4039                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4040                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4041                         if (ret)
4042                                 break;
4043                 }
4044         }
4045
4046         return ret;
4047 }
4048
4049 #endif
4050 /**
4051  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4052  * @pf: pointer to PF
4053  *
4054  * Get TC map for ISCSI PF type that will include iSCSI TC
4055  * and LAN TC.
4056  **/
4057 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4058 {
4059         struct i40e_dcb_app_priority_table app;
4060         struct i40e_hw *hw = &pf->hw;
4061         u8 enabled_tc = 1; /* TC0 is always enabled */
4062         u8 tc, i;
4063         /* Get the iSCSI APP TLV */
4064         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4065
4066         for (i = 0; i < dcbcfg->numapps; i++) {
4067                 app = dcbcfg->app[i];
4068                 if (app.selector == I40E_APP_SEL_TCPIP &&
4069                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4070                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4071                         enabled_tc |= (1 << tc);
4072                         break;
4073                 }
4074         }
4075
4076         return enabled_tc;
4077 }
4078
4079 /**
4080  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4081  * @dcbcfg: the corresponding DCBx configuration structure
4082  *
4083  * Return the number of TCs from given DCBx configuration
4084  **/
4085 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4086 {
4087         u8 num_tc = 0;
4088         int i;
4089
4090         /* Scan the ETS Config Priority Table to find
4091          * traffic class enabled for a given priority
4092          * and use the traffic class index to get the
4093          * number of traffic classes enabled
4094          */
4095         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4096                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4097                         num_tc = dcbcfg->etscfg.prioritytable[i];
4098         }
4099
4100         /* Traffic class index starts from zero so
4101          * increment to return the actual count
4102          */
4103         return num_tc + 1;
4104 }
4105
4106 /**
4107  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4108  * @dcbcfg: the corresponding DCBx configuration structure
4109  *
4110  * Query the current DCB configuration and return the number of
4111  * traffic classes enabled from the given DCBX config
4112  **/
4113 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4114 {
4115         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4116         u8 enabled_tc = 1;
4117         u8 i;
4118
4119         for (i = 0; i < num_tc; i++)
4120                 enabled_tc |= 1 << i;
4121
4122         return enabled_tc;
4123 }
4124
4125 /**
4126  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4127  * @pf: PF being queried
4128  *
4129  * Return number of traffic classes enabled for the given PF
4130  **/
4131 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4132 {
4133         struct i40e_hw *hw = &pf->hw;
4134         u8 i, enabled_tc;
4135         u8 num_tc = 0;
4136         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4137
4138         /* If DCB is not enabled then always in single TC */
4139         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4140                 return 1;
4141
4142         /* SFP mode will be enabled for all TCs on port */
4143         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4144                 return i40e_dcb_get_num_tc(dcbcfg);
4145
4146         /* MFP mode return count of enabled TCs for this PF */
4147         if (pf->hw.func_caps.iscsi)
4148                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4149         else
4150                 return 1; /* Only TC0 */
4151
4152         /* At least have TC0 */
4153         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4154         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4155                 if (enabled_tc & (1 << i))
4156                         num_tc++;
4157         }
4158         return num_tc;
4159 }
4160
4161 /**
4162  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4163  * @pf: PF being queried
4164  *
4165  * Return a bitmap for first enabled traffic class for this PF.
4166  **/
4167 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4168 {
4169         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4170         u8 i = 0;
4171
4172         if (!enabled_tc)
4173                 return 0x1; /* TC0 */
4174
4175         /* Find the first enabled TC */
4176         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4177                 if (enabled_tc & (1 << i))
4178                         break;
4179         }
4180
4181         return 1 << i;
4182 }
4183
4184 /**
4185  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4186  * @pf: PF being queried
4187  *
4188  * Return a bitmap for enabled traffic classes for this PF.
4189  **/
4190 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4191 {
4192         /* If DCB is not enabled for this PF then just return default TC */
4193         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4194                 return i40e_pf_get_default_tc(pf);
4195
4196         /* SFP mode we want PF to be enabled for all TCs */
4197         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4198                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4199
4200         /* MFP enabled and iSCSI PF type */
4201         if (pf->hw.func_caps.iscsi)
4202                 return i40e_get_iscsi_tc_map(pf);
4203         else
4204                 return i40e_pf_get_default_tc(pf);
4205 }
4206
4207 /**
4208  * i40e_vsi_get_bw_info - Query VSI BW Information
4209  * @vsi: the VSI being queried
4210  *
4211  * Returns 0 on success, negative value on failure
4212  **/
4213 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4214 {
4215         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4216         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4217         struct i40e_pf *pf = vsi->back;
4218         struct i40e_hw *hw = &pf->hw;
4219         i40e_status aq_ret;
4220         u32 tc_bw_max;
4221         int i;
4222
4223         /* Get the VSI level BW configuration */
4224         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4225         if (aq_ret) {
4226                 dev_info(&pf->pdev->dev,
4227                          "couldn't get PF vsi bw config, err %d, aq_err %d\n",
4228                          aq_ret, pf->hw.aq.asq_last_status);
4229                 return -EINVAL;
4230         }
4231
4232         /* Get the VSI level BW configuration per TC */
4233         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4234                                                   NULL);
4235         if (aq_ret) {
4236                 dev_info(&pf->pdev->dev,
4237                          "couldn't get PF vsi ets bw config, err %d, aq_err %d\n",
4238                          aq_ret, pf->hw.aq.asq_last_status);
4239                 return -EINVAL;
4240         }
4241
4242         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4243                 dev_info(&pf->pdev->dev,
4244                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4245                          bw_config.tc_valid_bits,
4246                          bw_ets_config.tc_valid_bits);
4247                 /* Still continuing */
4248         }
4249
4250         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4251         vsi->bw_max_quanta = bw_config.max_bw;
4252         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4253                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4254         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4255                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4256                 vsi->bw_ets_limit_credits[i] =
4257                                         le16_to_cpu(bw_ets_config.credits[i]);
4258                 /* 3 bits out of 4 for each TC */
4259                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4260         }
4261
4262         return 0;
4263 }
4264
4265 /**
4266  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4267  * @vsi: the VSI being configured
4268  * @enabled_tc: TC bitmap
4269  * @bw_credits: BW shared credits per TC
4270  *
4271  * Returns 0 on success, negative value on failure
4272  **/
4273 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4274                                        u8 *bw_share)
4275 {
4276         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4277         i40e_status aq_ret;
4278         int i;
4279
4280         bw_data.tc_valid_bits = enabled_tc;
4281         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4282                 bw_data.tc_bw_credits[i] = bw_share[i];
4283
4284         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4285                                           NULL);
4286         if (aq_ret) {
4287                 dev_info(&vsi->back->pdev->dev,
4288                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4289                          vsi->back->hw.aq.asq_last_status);
4290                 return -EINVAL;
4291         }
4292
4293         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4294                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4295
4296         return 0;
4297 }
4298
4299 /**
4300  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4301  * @vsi: the VSI being configured
4302  * @enabled_tc: TC map to be enabled
4303  *
4304  **/
4305 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4306 {
4307         struct net_device *netdev = vsi->netdev;
4308         struct i40e_pf *pf = vsi->back;
4309         struct i40e_hw *hw = &pf->hw;
4310         u8 netdev_tc = 0;
4311         int i;
4312         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4313
4314         if (!netdev)
4315                 return;
4316
4317         if (!enabled_tc) {
4318                 netdev_reset_tc(netdev);
4319                 return;
4320         }
4321
4322         /* Set up actual enabled TCs on the VSI */
4323         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4324                 return;
4325
4326         /* set per TC queues for the VSI */
4327         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4328                 /* Only set TC queues for enabled tcs
4329                  *
4330                  * e.g. For a VSI that has TC0 and TC3 enabled the
4331                  * enabled_tc bitmap would be 0x00001001; the driver
4332                  * will set the numtc for netdev as 2 that will be
4333                  * referenced by the netdev layer as TC 0 and 1.
4334                  */
4335                 if (vsi->tc_config.enabled_tc & (1 << i))
4336                         netdev_set_tc_queue(netdev,
4337                                         vsi->tc_config.tc_info[i].netdev_tc,
4338                                         vsi->tc_config.tc_info[i].qcount,
4339                                         vsi->tc_config.tc_info[i].qoffset);
4340         }
4341
4342         /* Assign UP2TC map for the VSI */
4343         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4344                 /* Get the actual TC# for the UP */
4345                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4346                 /* Get the mapped netdev TC# for the UP */
4347                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4348                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4349         }
4350 }
4351
4352 /**
4353  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4354  * @vsi: the VSI being configured
4355  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4356  **/
4357 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4358                                       struct i40e_vsi_context *ctxt)
4359 {
4360         /* copy just the sections touched not the entire info
4361          * since not all sections are valid as returned by
4362          * update vsi params
4363          */
4364         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4365         memcpy(&vsi->info.queue_mapping,
4366                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4367         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4368                sizeof(vsi->info.tc_mapping));
4369 }
4370
4371 /**
4372  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4373  * @vsi: VSI to be configured
4374  * @enabled_tc: TC bitmap
4375  *
4376  * This configures a particular VSI for TCs that are mapped to the
4377  * given TC bitmap. It uses default bandwidth share for TCs across
4378  * VSIs to configure TC for a particular VSI.
4379  *
4380  * NOTE:
4381  * It is expected that the VSI queues have been quisced before calling
4382  * this function.
4383  **/
4384 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4385 {
4386         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4387         struct i40e_vsi_context ctxt;
4388         int ret = 0;
4389         int i;
4390
4391         /* Check if enabled_tc is same as existing or new TCs */
4392         if (vsi->tc_config.enabled_tc == enabled_tc)
4393                 return ret;
4394
4395         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4396         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4397                 if (enabled_tc & (1 << i))
4398                         bw_share[i] = 1;
4399         }
4400
4401         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4402         if (ret) {
4403                 dev_info(&vsi->back->pdev->dev,
4404                          "Failed configuring TC map %d for VSI %d\n",
4405                          enabled_tc, vsi->seid);
4406                 goto out;
4407         }
4408
4409         /* Update Queue Pairs Mapping for currently enabled UPs */
4410         ctxt.seid = vsi->seid;
4411         ctxt.pf_num = vsi->back->hw.pf_id;
4412         ctxt.vf_num = 0;
4413         ctxt.uplink_seid = vsi->uplink_seid;
4414         ctxt.info = vsi->info;
4415         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4416
4417         /* Update the VSI after updating the VSI queue-mapping information */
4418         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4419         if (ret) {
4420                 dev_info(&vsi->back->pdev->dev,
4421                          "update vsi failed, aq_err=%d\n",
4422                          vsi->back->hw.aq.asq_last_status);
4423                 goto out;
4424         }
4425         /* update the local VSI info with updated queue map */
4426         i40e_vsi_update_queue_map(vsi, &ctxt);
4427         vsi->info.valid_sections = 0;
4428
4429         /* Update current VSI BW information */
4430         ret = i40e_vsi_get_bw_info(vsi);
4431         if (ret) {
4432                 dev_info(&vsi->back->pdev->dev,
4433                          "Failed updating vsi bw info, aq_err=%d\n",
4434                          vsi->back->hw.aq.asq_last_status);
4435                 goto out;
4436         }
4437
4438         /* Update the netdev TC setup */
4439         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4440 out:
4441         return ret;
4442 }
4443
4444 /**
4445  * i40e_veb_config_tc - Configure TCs for given VEB
4446  * @veb: given VEB
4447  * @enabled_tc: TC bitmap
4448  *
4449  * Configures given TC bitmap for VEB (switching) element
4450  **/
4451 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4452 {
4453         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4454         struct i40e_pf *pf = veb->pf;
4455         int ret = 0;
4456         int i;
4457
4458         /* No TCs or already enabled TCs just return */
4459         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4460                 return ret;
4461
4462         bw_data.tc_valid_bits = enabled_tc;
4463         /* bw_data.absolute_credits is not set (relative) */
4464
4465         /* Enable ETS TCs with equal BW Share for now */
4466         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4467                 if (enabled_tc & (1 << i))
4468                         bw_data.tc_bw_share_credits[i] = 1;
4469         }
4470
4471         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4472                                                    &bw_data, NULL);
4473         if (ret) {
4474                 dev_info(&pf->pdev->dev,
4475                          "veb bw config failed, aq_err=%d\n",
4476                          pf->hw.aq.asq_last_status);
4477                 goto out;
4478         }
4479
4480         /* Update the BW information */
4481         ret = i40e_veb_get_bw_info(veb);
4482         if (ret) {
4483                 dev_info(&pf->pdev->dev,
4484                          "Failed getting veb bw config, aq_err=%d\n",
4485                          pf->hw.aq.asq_last_status);
4486         }
4487
4488 out:
4489         return ret;
4490 }
4491
4492 #ifdef CONFIG_I40E_DCB
4493 /**
4494  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4495  * @pf: PF struct
4496  *
4497  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4498  * the caller would've quiesce all the VSIs before calling
4499  * this function
4500  **/
4501 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4502 {
4503         u8 tc_map = 0;
4504         int ret;
4505         u8 v;
4506
4507         /* Enable the TCs available on PF to all VEBs */
4508         tc_map = i40e_pf_get_tc_map(pf);
4509         for (v = 0; v < I40E_MAX_VEB; v++) {
4510                 if (!pf->veb[v])
4511                         continue;
4512                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4513                 if (ret) {
4514                         dev_info(&pf->pdev->dev,
4515                                  "Failed configuring TC for VEB seid=%d\n",
4516                                  pf->veb[v]->seid);
4517                         /* Will try to configure as many components */
4518                 }
4519         }
4520
4521         /* Update each VSI */
4522         for (v = 0; v < pf->num_alloc_vsi; v++) {
4523                 if (!pf->vsi[v])
4524                         continue;
4525
4526                 /* - Enable all TCs for the LAN VSI
4527 #ifdef I40E_FCOE
4528                  * - For FCoE VSI only enable the TC configured
4529                  *   as per the APP TLV
4530 #endif
4531                  * - For all others keep them at TC0 for now
4532                  */
4533                 if (v == pf->lan_vsi)
4534                         tc_map = i40e_pf_get_tc_map(pf);
4535                 else
4536                         tc_map = i40e_pf_get_default_tc(pf);
4537 #ifdef I40E_FCOE
4538                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4539                         tc_map = i40e_get_fcoe_tc_map(pf);
4540 #endif /* #ifdef I40E_FCOE */
4541
4542                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4543                 if (ret) {
4544                         dev_info(&pf->pdev->dev,
4545                                  "Failed configuring TC for VSI seid=%d\n",
4546                                  pf->vsi[v]->seid);
4547                         /* Will try to configure as many components */
4548                 } else {
4549                         /* Re-configure VSI vectors based on updated TC map */
4550                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4551                         if (pf->vsi[v]->netdev)
4552                                 i40e_dcbnl_set_all(pf->vsi[v]);
4553                 }
4554         }
4555 }
4556
4557 /**
4558  * i40e_resume_port_tx - Resume port Tx
4559  * @pf: PF struct
4560  *
4561  * Resume a port's Tx and issue a PF reset in case of failure to
4562  * resume.
4563  **/
4564 static int i40e_resume_port_tx(struct i40e_pf *pf)
4565 {
4566         struct i40e_hw *hw = &pf->hw;
4567         int ret;
4568
4569         ret = i40e_aq_resume_port_tx(hw, NULL);
4570         if (ret) {
4571                 dev_info(&pf->pdev->dev,
4572                          "AQ command Resume Port Tx failed = %d\n",
4573                           pf->hw.aq.asq_last_status);
4574                 /* Schedule PF reset to recover */
4575                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4576                 i40e_service_event_schedule(pf);
4577         }
4578
4579         return ret;
4580 }
4581
4582 /**
4583  * i40e_init_pf_dcb - Initialize DCB configuration
4584  * @pf: PF being configured
4585  *
4586  * Query the current DCB configuration and cache it
4587  * in the hardware structure
4588  **/
4589 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4590 {
4591         struct i40e_hw *hw = &pf->hw;
4592         int err = 0;
4593
4594         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4595         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4596             (pf->hw.aq.fw_maj_ver < 4))
4597                 goto out;
4598
4599         /* Get the initial DCB configuration */
4600         err = i40e_init_dcb(hw);
4601         if (!err) {
4602                 /* Device/Function is not DCBX capable */
4603                 if ((!hw->func_caps.dcb) ||
4604                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4605                         dev_info(&pf->pdev->dev,
4606                                  "DCBX offload is not supported or is disabled for this PF.\n");
4607
4608                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4609                                 goto out;
4610
4611                 } else {
4612                         /* When status is not DISABLED then DCBX in FW */
4613                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4614                                        DCB_CAP_DCBX_VER_IEEE;
4615
4616                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4617                         /* Enable DCB tagging only when more than one TC */
4618                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4619                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4620                         dev_dbg(&pf->pdev->dev,
4621                                 "DCBX offload is supported for this PF.\n");
4622                 }
4623         } else {
4624                 dev_info(&pf->pdev->dev,
4625                          "AQ Querying DCB configuration failed: aq_err %d\n",
4626                          pf->hw.aq.asq_last_status);
4627         }
4628
4629 out:
4630         return err;
4631 }
4632 #endif /* CONFIG_I40E_DCB */
4633 #define SPEED_SIZE 14
4634 #define FC_SIZE 8
4635 /**
4636  * i40e_print_link_message - print link up or down
4637  * @vsi: the VSI for which link needs a message
4638  */
4639 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4640 {
4641         char speed[SPEED_SIZE] = "Unknown";
4642         char fc[FC_SIZE] = "RX/TX";
4643
4644         if (!isup) {
4645                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4646                 return;
4647         }
4648
4649         /* Warn user if link speed on NPAR enabled partition is not at
4650          * least 10GB
4651          */
4652         if (vsi->back->hw.func_caps.npar_enable &&
4653             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4654              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4655                 netdev_warn(vsi->netdev,
4656                             "The partition detected link speed that is less than 10Gbps\n");
4657
4658         switch (vsi->back->hw.phy.link_info.link_speed) {
4659         case I40E_LINK_SPEED_40GB:
4660                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4661                 break;
4662         case I40E_LINK_SPEED_20GB:
4663                 strncpy(speed, "20 Gbps", SPEED_SIZE);
4664                 break;
4665         case I40E_LINK_SPEED_10GB:
4666                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4667                 break;
4668         case I40E_LINK_SPEED_1GB:
4669                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4670                 break;
4671         case I40E_LINK_SPEED_100MB:
4672                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4673                 break;
4674         default:
4675                 break;
4676         }
4677
4678         switch (vsi->back->hw.fc.current_mode) {
4679         case I40E_FC_FULL:
4680                 strlcpy(fc, "RX/TX", FC_SIZE);
4681                 break;
4682         case I40E_FC_TX_PAUSE:
4683                 strlcpy(fc, "TX", FC_SIZE);
4684                 break;
4685         case I40E_FC_RX_PAUSE:
4686                 strlcpy(fc, "RX", FC_SIZE);
4687                 break;
4688         default:
4689                 strlcpy(fc, "None", FC_SIZE);
4690                 break;
4691         }
4692
4693         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4694                     speed, fc);
4695 }
4696
4697 /**
4698  * i40e_up_complete - Finish the last steps of bringing up a connection
4699  * @vsi: the VSI being configured
4700  **/
4701 static int i40e_up_complete(struct i40e_vsi *vsi)
4702 {
4703         struct i40e_pf *pf = vsi->back;
4704         int err;
4705
4706         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4707                 i40e_vsi_configure_msix(vsi);
4708         else
4709                 i40e_configure_msi_and_legacy(vsi);
4710
4711         /* start rings */
4712         err = i40e_vsi_control_rings(vsi, true);
4713         if (err)
4714                 return err;
4715
4716         clear_bit(__I40E_DOWN, &vsi->state);
4717         i40e_napi_enable_all(vsi);
4718         i40e_vsi_enable_irq(vsi);
4719
4720         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4721             (vsi->netdev)) {
4722                 i40e_print_link_message(vsi, true);
4723                 netif_tx_start_all_queues(vsi->netdev);
4724                 netif_carrier_on(vsi->netdev);
4725         } else if (vsi->netdev) {
4726                 i40e_print_link_message(vsi, false);
4727                 /* need to check for qualified module here*/
4728                 if ((pf->hw.phy.link_info.link_info &
4729                         I40E_AQ_MEDIA_AVAILABLE) &&
4730                     (!(pf->hw.phy.link_info.an_info &
4731                         I40E_AQ_QUALIFIED_MODULE)))
4732                         netdev_err(vsi->netdev,
4733                                    "the driver failed to link because an unqualified module was detected.");
4734         }
4735
4736         /* replay FDIR SB filters */
4737         if (vsi->type == I40E_VSI_FDIR) {
4738                 /* reset fd counters */
4739                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4740                 if (pf->fd_tcp_rule > 0) {
4741                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4742                         dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4743                         pf->fd_tcp_rule = 0;
4744                 }
4745                 i40e_fdir_filter_restore(vsi);
4746         }
4747         i40e_service_event_schedule(pf);
4748
4749         return 0;
4750 }
4751
4752 /**
4753  * i40e_vsi_reinit_locked - Reset the VSI
4754  * @vsi: the VSI being configured
4755  *
4756  * Rebuild the ring structs after some configuration
4757  * has changed, e.g. MTU size.
4758  **/
4759 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4760 {
4761         struct i40e_pf *pf = vsi->back;
4762
4763         WARN_ON(in_interrupt());
4764         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4765                 usleep_range(1000, 2000);
4766         i40e_down(vsi);
4767
4768         /* Give a VF some time to respond to the reset.  The
4769          * two second wait is based upon the watchdog cycle in
4770          * the VF driver.
4771          */
4772         if (vsi->type == I40E_VSI_SRIOV)
4773                 msleep(2000);
4774         i40e_up(vsi);
4775         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4776 }
4777
4778 /**
4779  * i40e_up - Bring the connection back up after being down
4780  * @vsi: the VSI being configured
4781  **/
4782 int i40e_up(struct i40e_vsi *vsi)
4783 {
4784         int err;
4785
4786         err = i40e_vsi_configure(vsi);
4787         if (!err)
4788                 err = i40e_up_complete(vsi);
4789
4790         return err;
4791 }
4792
4793 /**
4794  * i40e_down - Shutdown the connection processing
4795  * @vsi: the VSI being stopped
4796  **/
4797 void i40e_down(struct i40e_vsi *vsi)
4798 {
4799         int i;
4800
4801         /* It is assumed that the caller of this function
4802          * sets the vsi->state __I40E_DOWN bit.
4803          */
4804         if (vsi->netdev) {
4805                 netif_carrier_off(vsi->netdev);
4806                 netif_tx_disable(vsi->netdev);
4807         }
4808         i40e_vsi_disable_irq(vsi);
4809         i40e_vsi_control_rings(vsi, false);
4810         i40e_napi_disable_all(vsi);
4811
4812         for (i = 0; i < vsi->num_queue_pairs; i++) {
4813                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4814                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4815         }
4816 }
4817
4818 /**
4819  * i40e_setup_tc - configure multiple traffic classes
4820  * @netdev: net device to configure
4821  * @tc: number of traffic classes to enable
4822  **/
4823 #ifdef I40E_FCOE
4824 int i40e_setup_tc(struct net_device *netdev, u8 tc)
4825 #else
4826 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4827 #endif
4828 {
4829         struct i40e_netdev_priv *np = netdev_priv(netdev);
4830         struct i40e_vsi *vsi = np->vsi;
4831         struct i40e_pf *pf = vsi->back;
4832         u8 enabled_tc = 0;
4833         int ret = -EINVAL;
4834         int i;
4835
4836         /* Check if DCB enabled to continue */
4837         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4838                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4839                 goto exit;
4840         }
4841
4842         /* Check if MFP enabled */
4843         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4844                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4845                 goto exit;
4846         }
4847
4848         /* Check whether tc count is within enabled limit */
4849         if (tc > i40e_pf_get_num_tc(pf)) {
4850                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4851                 goto exit;
4852         }
4853
4854         /* Generate TC map for number of tc requested */
4855         for (i = 0; i < tc; i++)
4856                 enabled_tc |= (1 << i);
4857
4858         /* Requesting same TC configuration as already enabled */
4859         if (enabled_tc == vsi->tc_config.enabled_tc)
4860                 return 0;
4861
4862         /* Quiesce VSI queues */
4863         i40e_quiesce_vsi(vsi);
4864
4865         /* Configure VSI for enabled TCs */
4866         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4867         if (ret) {
4868                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4869                             vsi->seid);
4870                 goto exit;
4871         }
4872
4873         /* Unquiesce VSI */
4874         i40e_unquiesce_vsi(vsi);
4875
4876 exit:
4877         return ret;
4878 }
4879
4880 /**
4881  * i40e_open - Called when a network interface is made active
4882  * @netdev: network interface device structure
4883  *
4884  * The open entry point is called when a network interface is made
4885  * active by the system (IFF_UP).  At this point all resources needed
4886  * for transmit and receive operations are allocated, the interrupt
4887  * handler is registered with the OS, the netdev watchdog subtask is
4888  * enabled, and the stack is notified that the interface is ready.
4889  *
4890  * Returns 0 on success, negative value on failure
4891  **/
4892 int i40e_open(struct net_device *netdev)
4893 {
4894         struct i40e_netdev_priv *np = netdev_priv(netdev);
4895         struct i40e_vsi *vsi = np->vsi;
4896         struct i40e_pf *pf = vsi->back;
4897         int err;
4898
4899         /* disallow open during test or if eeprom is broken */
4900         if (test_bit(__I40E_TESTING, &pf->state) ||
4901             test_bit(__I40E_BAD_EEPROM, &pf->state))
4902                 return -EBUSY;
4903
4904         netif_carrier_off(netdev);
4905
4906         err = i40e_vsi_open(vsi);
4907         if (err)
4908                 return err;
4909
4910         /* configure global TSO hardware offload settings */
4911         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4912                                                        TCP_FLAG_FIN) >> 16);
4913         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4914                                                        TCP_FLAG_FIN |
4915                                                        TCP_FLAG_CWR) >> 16);
4916         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4917
4918 #ifdef CONFIG_I40E_VXLAN
4919         vxlan_get_rx_port(netdev);
4920 #endif
4921
4922         return 0;
4923 }
4924
4925 /**
4926  * i40e_vsi_open -
4927  * @vsi: the VSI to open
4928  *
4929  * Finish initialization of the VSI.
4930  *
4931  * Returns 0 on success, negative value on failure
4932  **/
4933 int i40e_vsi_open(struct i40e_vsi *vsi)
4934 {
4935         struct i40e_pf *pf = vsi->back;
4936         char int_name[I40E_INT_NAME_STR_LEN];
4937         int err;
4938
4939         /* allocate descriptors */
4940         err = i40e_vsi_setup_tx_resources(vsi);
4941         if (err)
4942                 goto err_setup_tx;
4943         err = i40e_vsi_setup_rx_resources(vsi);
4944         if (err)
4945                 goto err_setup_rx;
4946
4947         err = i40e_vsi_configure(vsi);
4948         if (err)
4949                 goto err_setup_rx;
4950
4951         if (vsi->netdev) {
4952                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4953                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4954                 err = i40e_vsi_request_irq(vsi, int_name);
4955                 if (err)
4956                         goto err_setup_rx;
4957
4958                 /* Notify the stack of the actual queue counts. */
4959                 err = netif_set_real_num_tx_queues(vsi->netdev,
4960                                                    vsi->num_queue_pairs);
4961                 if (err)
4962                         goto err_set_queues;
4963
4964                 err = netif_set_real_num_rx_queues(vsi->netdev,
4965                                                    vsi->num_queue_pairs);
4966                 if (err)
4967                         goto err_set_queues;
4968
4969         } else if (vsi->type == I40E_VSI_FDIR) {
4970                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
4971                          dev_driver_string(&pf->pdev->dev),
4972                          dev_name(&pf->pdev->dev));
4973                 err = i40e_vsi_request_irq(vsi, int_name);
4974
4975         } else {
4976                 err = -EINVAL;
4977                 goto err_setup_rx;
4978         }
4979
4980         err = i40e_up_complete(vsi);
4981         if (err)
4982                 goto err_up_complete;
4983
4984         return 0;
4985
4986 err_up_complete:
4987         i40e_down(vsi);
4988 err_set_queues:
4989         i40e_vsi_free_irq(vsi);
4990 err_setup_rx:
4991         i40e_vsi_free_rx_resources(vsi);
4992 err_setup_tx:
4993         i40e_vsi_free_tx_resources(vsi);
4994         if (vsi == pf->vsi[pf->lan_vsi])
4995                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4996
4997         return err;
4998 }
4999
5000 /**
5001  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5002  * @pf: Pointer to PF
5003  *
5004  * This function destroys the hlist where all the Flow Director
5005  * filters were saved.
5006  **/
5007 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5008 {
5009         struct i40e_fdir_filter *filter;
5010         struct hlist_node *node2;
5011
5012         hlist_for_each_entry_safe(filter, node2,
5013                                   &pf->fdir_filter_list, fdir_node) {
5014                 hlist_del(&filter->fdir_node);
5015                 kfree(filter);
5016         }
5017         pf->fdir_pf_active_filters = 0;
5018 }
5019
5020 /**
5021  * i40e_close - Disables a network interface
5022  * @netdev: network interface device structure
5023  *
5024  * The close entry point is called when an interface is de-activated
5025  * by the OS.  The hardware is still under the driver's control, but
5026  * this netdev interface is disabled.
5027  *
5028  * Returns 0, this is not allowed to fail
5029  **/
5030 #ifdef I40E_FCOE
5031 int i40e_close(struct net_device *netdev)
5032 #else
5033 static int i40e_close(struct net_device *netdev)
5034 #endif
5035 {
5036         struct i40e_netdev_priv *np = netdev_priv(netdev);
5037         struct i40e_vsi *vsi = np->vsi;
5038
5039         i40e_vsi_close(vsi);
5040
5041         return 0;
5042 }
5043
5044 /**
5045  * i40e_do_reset - Start a PF or Core Reset sequence
5046  * @pf: board private structure
5047  * @reset_flags: which reset is requested
5048  *
5049  * The essential difference in resets is that the PF Reset
5050  * doesn't clear the packet buffers, doesn't reset the PE
5051  * firmware, and doesn't bother the other PFs on the chip.
5052  **/
5053 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5054 {
5055         u32 val;
5056
5057         WARN_ON(in_interrupt());
5058
5059         if (i40e_check_asq_alive(&pf->hw))
5060                 i40e_vc_notify_reset(pf);
5061
5062         /* do the biggest reset indicated */
5063         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
5064
5065                 /* Request a Global Reset
5066                  *
5067                  * This will start the chip's countdown to the actual full
5068                  * chip reset event, and a warning interrupt to be sent
5069                  * to all PFs, including the requestor.  Our handler
5070                  * for the warning interrupt will deal with the shutdown
5071                  * and recovery of the switch setup.
5072                  */
5073                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5074                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5075                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5076                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5077
5078         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
5079
5080                 /* Request a Core Reset
5081                  *
5082                  * Same as Global Reset, except does *not* include the MAC/PHY
5083                  */
5084                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5085                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5086                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5087                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5088                 i40e_flush(&pf->hw);
5089
5090         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
5091
5092                 /* Request a PF Reset
5093                  *
5094                  * Resets only the PF-specific registers
5095                  *
5096                  * This goes directly to the tear-down and rebuild of
5097                  * the switch, since we need to do all the recovery as
5098                  * for the Core Reset.
5099                  */
5100                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5101                 i40e_handle_reset_warning(pf);
5102
5103         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
5104                 int v;
5105
5106                 /* Find the VSI(s) that requested a re-init */
5107                 dev_info(&pf->pdev->dev,
5108                          "VSI reinit requested\n");
5109                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5110                         struct i40e_vsi *vsi = pf->vsi[v];
5111                         if (vsi != NULL &&
5112                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5113                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5114                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5115                         }
5116                 }
5117
5118                 /* no further action needed, so return now */
5119                 return;
5120         } else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
5121                 int v;
5122
5123                 /* Find the VSI(s) that needs to be brought down */
5124                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5125                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5126                         struct i40e_vsi *vsi = pf->vsi[v];
5127                         if (vsi != NULL &&
5128                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5129                                 set_bit(__I40E_DOWN, &vsi->state);
5130                                 i40e_down(vsi);
5131                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5132                         }
5133                 }
5134
5135                 /* no further action needed, so return now */
5136                 return;
5137         } else {
5138                 dev_info(&pf->pdev->dev,
5139                          "bad reset request 0x%08x\n", reset_flags);
5140                 return;
5141         }
5142 }
5143
5144 #ifdef CONFIG_I40E_DCB
5145 /**
5146  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5147  * @pf: board private structure
5148  * @old_cfg: current DCB config
5149  * @new_cfg: new DCB config
5150  **/
5151 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5152                             struct i40e_dcbx_config *old_cfg,
5153                             struct i40e_dcbx_config *new_cfg)
5154 {
5155         bool need_reconfig = false;
5156
5157         /* Check if ETS configuration has changed */
5158         if (memcmp(&new_cfg->etscfg,
5159                    &old_cfg->etscfg,
5160                    sizeof(new_cfg->etscfg))) {
5161                 /* If Priority Table has changed reconfig is needed */
5162                 if (memcmp(&new_cfg->etscfg.prioritytable,
5163                            &old_cfg->etscfg.prioritytable,
5164                            sizeof(new_cfg->etscfg.prioritytable))) {
5165                         need_reconfig = true;
5166                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5167                 }
5168
5169                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5170                            &old_cfg->etscfg.tcbwtable,
5171                            sizeof(new_cfg->etscfg.tcbwtable)))
5172                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5173
5174                 if (memcmp(&new_cfg->etscfg.tsatable,
5175                            &old_cfg->etscfg.tsatable,
5176                            sizeof(new_cfg->etscfg.tsatable)))
5177                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5178         }
5179
5180         /* Check if PFC configuration has changed */
5181         if (memcmp(&new_cfg->pfc,
5182                    &old_cfg->pfc,
5183                    sizeof(new_cfg->pfc))) {
5184                 need_reconfig = true;
5185                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5186         }
5187
5188         /* Check if APP Table has changed */
5189         if (memcmp(&new_cfg->app,
5190                    &old_cfg->app,
5191                    sizeof(new_cfg->app))) {
5192                 need_reconfig = true;
5193                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5194         }
5195
5196         dev_dbg(&pf->pdev->dev, "%s: need_reconfig=%d\n", __func__,
5197                 need_reconfig);
5198         return need_reconfig;
5199 }
5200
5201 /**
5202  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5203  * @pf: board private structure
5204  * @e: event info posted on ARQ
5205  **/
5206 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5207                                   struct i40e_arq_event_info *e)
5208 {
5209         struct i40e_aqc_lldp_get_mib *mib =
5210                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5211         struct i40e_hw *hw = &pf->hw;
5212         struct i40e_dcbx_config tmp_dcbx_cfg;
5213         bool need_reconfig = false;
5214         int ret = 0;
5215         u8 type;
5216
5217         /* Not DCB capable or capability disabled */
5218         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5219                 return ret;
5220
5221         /* Ignore if event is not for Nearest Bridge */
5222         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5223                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5224         dev_dbg(&pf->pdev->dev,
5225                 "%s: LLDP event mib bridge type 0x%x\n", __func__, type);
5226         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5227                 return ret;
5228
5229         /* Check MIB Type and return if event for Remote MIB update */
5230         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5231         dev_dbg(&pf->pdev->dev,
5232                 "%s: LLDP event mib type %s\n", __func__,
5233                 type ? "remote" : "local");
5234         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5235                 /* Update the remote cached instance and return */
5236                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5237                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5238                                 &hw->remote_dcbx_config);
5239                 goto exit;
5240         }
5241
5242         /* Store the old configuration */
5243         tmp_dcbx_cfg = hw->local_dcbx_config;
5244
5245         /* Reset the old DCBx configuration data */
5246         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5247         /* Get updated DCBX data from firmware */
5248         ret = i40e_get_dcb_config(&pf->hw);
5249         if (ret) {
5250                 dev_info(&pf->pdev->dev, "Failed querying DCB configuration data from firmware.\n");
5251                 goto exit;
5252         }
5253
5254         /* No change detected in DCBX configs */
5255         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5256                     sizeof(tmp_dcbx_cfg))) {
5257                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5258                 goto exit;
5259         }
5260
5261         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5262                                                &hw->local_dcbx_config);
5263
5264         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5265
5266         if (!need_reconfig)
5267                 goto exit;
5268
5269         /* Enable DCB tagging only when more than one TC */
5270         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5271                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5272         else
5273                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5274
5275         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5276         /* Reconfiguration needed quiesce all VSIs */
5277         i40e_pf_quiesce_all_vsi(pf);
5278
5279         /* Changes in configuration update VEB/VSI */
5280         i40e_dcb_reconfigure(pf);
5281
5282         ret = i40e_resume_port_tx(pf);
5283
5284         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5285         /* In case of error no point in resuming VSIs */
5286         if (ret)
5287                 goto exit;
5288
5289         /* Wait for the PF's Tx queues to be disabled */
5290         ret = i40e_pf_wait_txq_disabled(pf);
5291         if (ret) {
5292                 /* Schedule PF reset to recover */
5293                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5294                 i40e_service_event_schedule(pf);
5295         } else {
5296                 i40e_pf_unquiesce_all_vsi(pf);
5297         }
5298
5299 exit:
5300         return ret;
5301 }
5302 #endif /* CONFIG_I40E_DCB */
5303
5304 /**
5305  * i40e_do_reset_safe - Protected reset path for userland calls.
5306  * @pf: board private structure
5307  * @reset_flags: which reset is requested
5308  *
5309  **/
5310 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5311 {
5312         rtnl_lock();
5313         i40e_do_reset(pf, reset_flags);
5314         rtnl_unlock();
5315 }
5316
5317 /**
5318  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5319  * @pf: board private structure
5320  * @e: event info posted on ARQ
5321  *
5322  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5323  * and VF queues
5324  **/
5325 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5326                                            struct i40e_arq_event_info *e)
5327 {
5328         struct i40e_aqc_lan_overflow *data =
5329                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5330         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5331         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5332         struct i40e_hw *hw = &pf->hw;
5333         struct i40e_vf *vf;
5334         u16 vf_id;
5335
5336         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5337                 queue, qtx_ctl);
5338
5339         /* Queue belongs to VF, find the VF and issue VF reset */
5340         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5341             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5342                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5343                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5344                 vf_id -= hw->func_caps.vf_base_id;
5345                 vf = &pf->vf[vf_id];
5346                 i40e_vc_notify_vf_reset(vf);
5347                 /* Allow VF to process pending reset notification */
5348                 msleep(20);
5349                 i40e_reset_vf(vf, false);
5350         }
5351 }
5352
5353 /**
5354  * i40e_service_event_complete - Finish up the service event
5355  * @pf: board private structure
5356  **/
5357 static void i40e_service_event_complete(struct i40e_pf *pf)
5358 {
5359         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5360
5361         /* flush memory to make sure state is correct before next watchog */
5362         smp_mb__before_atomic();
5363         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5364 }
5365
5366 /**
5367  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5368  * @pf: board private structure
5369  **/
5370 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5371 {
5372         u32 val, fcnt_prog;
5373
5374         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5375         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5376         return fcnt_prog;
5377 }
5378
5379 /**
5380  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5381  * @pf: board private structure
5382  **/
5383 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5384 {
5385         u32 val, fcnt_prog;
5386
5387         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5388         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5389                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5390                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5391         return fcnt_prog;
5392 }
5393
5394 /**
5395  * i40e_get_global_fd_count - Get total FD filters programmed on device
5396  * @pf: board private structure
5397  **/
5398 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5399 {
5400         u32 val, fcnt_prog;
5401
5402         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5403         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5404                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5405                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5406         return fcnt_prog;
5407 }
5408
5409 /**
5410  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5411  * @pf: board private structure
5412  **/
5413 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5414 {
5415         u32 fcnt_prog, fcnt_avail;
5416
5417         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5418                 return;
5419
5420         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5421          * to re-enable
5422          */
5423         fcnt_prog = i40e_get_global_fd_count(pf);
5424         fcnt_avail = pf->fdir_pf_filter_count;
5425         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5426             (pf->fd_add_err == 0) ||
5427             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5428                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5429                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5430                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5431                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5432                 }
5433         }
5434         /* Wait for some more space to be available to turn on ATR */
5435         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5436                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5437                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5438                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5439                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5440                 }
5441         }
5442 }
5443
5444 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5445 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5446 /**
5447  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5448  * @pf: board private structure
5449  **/
5450 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5451 {
5452         unsigned long min_flush_time;
5453         int flush_wait_retry = 50;
5454         bool disable_atr = false;
5455         int fd_room;
5456         int reg;
5457
5458         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5459                 return;
5460
5461         if (time_after(jiffies, pf->fd_flush_timestamp +
5462                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5463                 /* If the flush is happening too quick and we have mostly
5464                  * SB rules we should not re-enable ATR for some time.
5465                  */
5466                 min_flush_time = pf->fd_flush_timestamp
5467                                 + (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5468                 fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5469
5470                 if (!(time_after(jiffies, min_flush_time)) &&
5471                     (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5472                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5473                         disable_atr = true;
5474                 }
5475
5476                 pf->fd_flush_timestamp = jiffies;
5477                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5478                 /* flush all filters */
5479                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5480                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5481                 i40e_flush(&pf->hw);
5482                 pf->fd_flush_cnt++;
5483                 pf->fd_add_err = 0;
5484                 do {
5485                         /* Check FD flush status every 5-6msec */
5486                         usleep_range(5000, 6000);
5487                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5488                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5489                                 break;
5490                 } while (flush_wait_retry--);
5491                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5492                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5493                 } else {
5494                         /* replay sideband filters */
5495                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5496                         if (!disable_atr)
5497                                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5498                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5499                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5500                 }
5501         }
5502 }
5503
5504 /**
5505  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5506  * @pf: board private structure
5507  **/
5508 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5509 {
5510         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5511 }
5512
5513 /* We can see up to 256 filter programming desc in transit if the filters are
5514  * being applied really fast; before we see the first
5515  * filter miss error on Rx queue 0. Accumulating enough error messages before
5516  * reacting will make sure we don't cause flush too often.
5517  */
5518 #define I40E_MAX_FD_PROGRAM_ERROR 256
5519
5520 /**
5521  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5522  * @pf: board private structure
5523  **/
5524 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5525 {
5526
5527         /* if interface is down do nothing */
5528         if (test_bit(__I40E_DOWN, &pf->state))
5529                 return;
5530
5531         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5532                 return;
5533
5534         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5535                 i40e_fdir_flush_and_replay(pf);
5536
5537         i40e_fdir_check_and_reenable(pf);
5538
5539 }
5540
5541 /**
5542  * i40e_vsi_link_event - notify VSI of a link event
5543  * @vsi: vsi to be notified
5544  * @link_up: link up or down
5545  **/
5546 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5547 {
5548         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5549                 return;
5550
5551         switch (vsi->type) {
5552         case I40E_VSI_MAIN:
5553 #ifdef I40E_FCOE
5554         case I40E_VSI_FCOE:
5555 #endif
5556                 if (!vsi->netdev || !vsi->netdev_registered)
5557                         break;
5558
5559                 if (link_up) {
5560                         netif_carrier_on(vsi->netdev);
5561                         netif_tx_wake_all_queues(vsi->netdev);
5562                 } else {
5563                         netif_carrier_off(vsi->netdev);
5564                         netif_tx_stop_all_queues(vsi->netdev);
5565                 }
5566                 break;
5567
5568         case I40E_VSI_SRIOV:
5569         case I40E_VSI_VMDQ2:
5570         case I40E_VSI_CTRL:
5571         case I40E_VSI_MIRROR:
5572         default:
5573                 /* there is no notification for other VSIs */
5574                 break;
5575         }
5576 }
5577
5578 /**
5579  * i40e_veb_link_event - notify elements on the veb of a link event
5580  * @veb: veb to be notified
5581  * @link_up: link up or down
5582  **/
5583 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5584 {
5585         struct i40e_pf *pf;
5586         int i;
5587
5588         if (!veb || !veb->pf)
5589                 return;
5590         pf = veb->pf;
5591
5592         /* depth first... */
5593         for (i = 0; i < I40E_MAX_VEB; i++)
5594                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5595                         i40e_veb_link_event(pf->veb[i], link_up);
5596
5597         /* ... now the local VSIs */
5598         for (i = 0; i < pf->num_alloc_vsi; i++)
5599                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5600                         i40e_vsi_link_event(pf->vsi[i], link_up);
5601 }
5602
5603 /**
5604  * i40e_link_event - Update netif_carrier status
5605  * @pf: board private structure
5606  **/
5607 static void i40e_link_event(struct i40e_pf *pf)
5608 {
5609         bool new_link, old_link;
5610         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5611         u8 new_link_speed, old_link_speed;
5612
5613         /* set this to force the get_link_status call to refresh state */
5614         pf->hw.phy.get_link_info = true;
5615
5616         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5617         new_link = i40e_get_link_status(&pf->hw);
5618         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5619         new_link_speed = pf->hw.phy.link_info.link_speed;
5620
5621         if (new_link == old_link &&
5622             new_link_speed == old_link_speed &&
5623             (test_bit(__I40E_DOWN, &vsi->state) ||
5624              new_link == netif_carrier_ok(vsi->netdev)))
5625                 return;
5626
5627         if (!test_bit(__I40E_DOWN, &vsi->state))
5628                 i40e_print_link_message(vsi, new_link);
5629
5630         /* Notify the base of the switch tree connected to
5631          * the link.  Floating VEBs are not notified.
5632          */
5633         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5634                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5635         else
5636                 i40e_vsi_link_event(vsi, new_link);
5637
5638         if (pf->vf)
5639                 i40e_vc_notify_link_state(pf);
5640
5641         if (pf->flags & I40E_FLAG_PTP)
5642                 i40e_ptp_set_increment(pf);
5643 }
5644
5645 /**
5646  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5647  * @pf: board private structure
5648  *
5649  * Set the per-queue flags to request a check for stuck queues in the irq
5650  * clean functions, then force interrupts to be sure the irq clean is called.
5651  **/
5652 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5653 {
5654         int i, v;
5655
5656         /* If we're down or resetting, just bail */
5657         if (test_bit(__I40E_DOWN, &pf->state) ||
5658             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5659                 return;
5660
5661         /* for each VSI/netdev
5662          *     for each Tx queue
5663          *         set the check flag
5664          *     for each q_vector
5665          *         force an interrupt
5666          */
5667         for (v = 0; v < pf->num_alloc_vsi; v++) {
5668                 struct i40e_vsi *vsi = pf->vsi[v];
5669                 int armed = 0;
5670
5671                 if (!pf->vsi[v] ||
5672                     test_bit(__I40E_DOWN, &vsi->state) ||
5673                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5674                         continue;
5675
5676                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5677                         set_check_for_tx_hang(vsi->tx_rings[i]);
5678                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5679                                      &vsi->tx_rings[i]->state))
5680                                 armed++;
5681                 }
5682
5683                 if (armed) {
5684                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5685                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5686                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5687                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
5688                                       I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
5689                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
5690                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
5691                         } else {
5692                                 u16 vec = vsi->base_vector - 1;
5693                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5694                                       I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK |
5695                                       I40E_PFINT_DYN_CTLN_ITR_INDX_MASK |
5696                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_ENA_MASK |
5697                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK);
5698                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5699                                         wr32(&vsi->back->hw,
5700                                              I40E_PFINT_DYN_CTLN(vec), val);
5701                         }
5702                         i40e_flush(&vsi->back->hw);
5703                 }
5704         }
5705 }
5706
5707 /**
5708  * i40e_watchdog_subtask - periodic checks not using event driven response
5709  * @pf: board private structure
5710  **/
5711 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5712 {
5713         int i;
5714
5715         /* if interface is down do nothing */
5716         if (test_bit(__I40E_DOWN, &pf->state) ||
5717             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5718                 return;
5719
5720         /* make sure we don't do these things too often */
5721         if (time_before(jiffies, (pf->service_timer_previous +
5722                                   pf->service_timer_period)))
5723                 return;
5724         pf->service_timer_previous = jiffies;
5725
5726         i40e_check_hang_subtask(pf);
5727         i40e_link_event(pf);
5728
5729         /* Update the stats for active netdevs so the network stack
5730          * can look at updated numbers whenever it cares to
5731          */
5732         for (i = 0; i < pf->num_alloc_vsi; i++)
5733                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5734                         i40e_update_stats(pf->vsi[i]);
5735
5736         /* Update the stats for the active switching components */
5737         for (i = 0; i < I40E_MAX_VEB; i++)
5738                 if (pf->veb[i])
5739                         i40e_update_veb_stats(pf->veb[i]);
5740
5741         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5742 }
5743
5744 /**
5745  * i40e_reset_subtask - Set up for resetting the device and driver
5746  * @pf: board private structure
5747  **/
5748 static void i40e_reset_subtask(struct i40e_pf *pf)
5749 {
5750         u32 reset_flags = 0;
5751
5752         rtnl_lock();
5753         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5754                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5755                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5756         }
5757         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5758                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5759                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5760         }
5761         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5762                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5763                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5764         }
5765         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5766                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5767                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5768         }
5769         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5770                 reset_flags |= (1 << __I40E_DOWN_REQUESTED);
5771                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5772         }
5773
5774         /* If there's a recovery already waiting, it takes
5775          * precedence before starting a new reset sequence.
5776          */
5777         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5778                 i40e_handle_reset_warning(pf);
5779                 goto unlock;
5780         }
5781
5782         /* If we're already down or resetting, just bail */
5783         if (reset_flags &&
5784             !test_bit(__I40E_DOWN, &pf->state) &&
5785             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5786                 i40e_do_reset(pf, reset_flags);
5787
5788 unlock:
5789         rtnl_unlock();
5790 }
5791
5792 /**
5793  * i40e_handle_link_event - Handle link event
5794  * @pf: board private structure
5795  * @e: event info posted on ARQ
5796  **/
5797 static void i40e_handle_link_event(struct i40e_pf *pf,
5798                                    struct i40e_arq_event_info *e)
5799 {
5800         struct i40e_hw *hw = &pf->hw;
5801         struct i40e_aqc_get_link_status *status =
5802                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5803
5804         /* save off old link status information */
5805         hw->phy.link_info_old = hw->phy.link_info;
5806
5807         /* Do a new status request to re-enable LSE reporting
5808          * and load new status information into the hw struct
5809          * This completely ignores any state information
5810          * in the ARQ event info, instead choosing to always
5811          * issue the AQ update link status command.
5812          */
5813         i40e_link_event(pf);
5814
5815         /* check for unqualified module, if link is down */
5816         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5817             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5818             (!(status->link_info & I40E_AQ_LINK_UP)))
5819                 dev_err(&pf->pdev->dev,
5820                         "The driver failed to link because an unqualified module was detected.\n");
5821 }
5822
5823 /**
5824  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5825  * @pf: board private structure
5826  **/
5827 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5828 {
5829         struct i40e_arq_event_info event;
5830         struct i40e_hw *hw = &pf->hw;
5831         u16 pending, i = 0;
5832         i40e_status ret;
5833         u16 opcode;
5834         u32 oldval;
5835         u32 val;
5836
5837         /* Do not run clean AQ when PF reset fails */
5838         if (test_bit(__I40E_RESET_FAILED, &pf->state))
5839                 return;
5840
5841         /* check for error indications */
5842         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5843         oldval = val;
5844         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5845                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5846                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5847         }
5848         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5849                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5850                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5851         }
5852         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5853                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5854                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5855         }
5856         if (oldval != val)
5857                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5858
5859         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5860         oldval = val;
5861         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5862                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5863                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5864         }
5865         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5866                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5867                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5868         }
5869         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5870                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5871                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5872         }
5873         if (oldval != val)
5874                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5875
5876         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
5877         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
5878         if (!event.msg_buf)
5879                 return;
5880
5881         do {
5882                 ret = i40e_clean_arq_element(hw, &event, &pending);
5883                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
5884                         break;
5885                 else if (ret) {
5886                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5887                         break;
5888                 }
5889
5890                 opcode = le16_to_cpu(event.desc.opcode);
5891                 switch (opcode) {
5892
5893                 case i40e_aqc_opc_get_link_status:
5894                         i40e_handle_link_event(pf, &event);
5895                         break;
5896                 case i40e_aqc_opc_send_msg_to_pf:
5897                         ret = i40e_vc_process_vf_msg(pf,
5898                                         le16_to_cpu(event.desc.retval),
5899                                         le32_to_cpu(event.desc.cookie_high),
5900                                         le32_to_cpu(event.desc.cookie_low),
5901                                         event.msg_buf,
5902                                         event.msg_len);
5903                         break;
5904                 case i40e_aqc_opc_lldp_update_mib:
5905                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5906 #ifdef CONFIG_I40E_DCB
5907                         rtnl_lock();
5908                         ret = i40e_handle_lldp_event(pf, &event);
5909                         rtnl_unlock();
5910 #endif /* CONFIG_I40E_DCB */
5911                         break;
5912                 case i40e_aqc_opc_event_lan_overflow:
5913                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5914                         i40e_handle_lan_overflow_event(pf, &event);
5915                         break;
5916                 case i40e_aqc_opc_send_msg_to_peer:
5917                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5918                         break;
5919                 case i40e_aqc_opc_nvm_erase:
5920                 case i40e_aqc_opc_nvm_update:
5921                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
5922                         break;
5923                 default:
5924                         dev_info(&pf->pdev->dev,
5925                                  "ARQ Error: Unknown event 0x%04x received\n",
5926                                  opcode);
5927                         break;
5928                 }
5929         } while (pending && (i++ < pf->adminq_work_limit));
5930
5931         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5932         /* re-enable Admin queue interrupt cause */
5933         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5934         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5935         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5936         i40e_flush(hw);
5937
5938         kfree(event.msg_buf);
5939 }
5940
5941 /**
5942  * i40e_verify_eeprom - make sure eeprom is good to use
5943  * @pf: board private structure
5944  **/
5945 static void i40e_verify_eeprom(struct i40e_pf *pf)
5946 {
5947         int err;
5948
5949         err = i40e_diag_eeprom_test(&pf->hw);
5950         if (err) {
5951                 /* retry in case of garbage read */
5952                 err = i40e_diag_eeprom_test(&pf->hw);
5953                 if (err) {
5954                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5955                                  err);
5956                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5957                 }
5958         }
5959
5960         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5961                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5962                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5963         }
5964 }
5965
5966 /**
5967  * i40e_enable_pf_switch_lb
5968  * @pf: pointer to the PF structure
5969  *
5970  * enable switch loop back or die - no point in a return value
5971  **/
5972 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
5973 {
5974         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5975         struct i40e_vsi_context ctxt;
5976         int aq_ret;
5977
5978         ctxt.seid = pf->main_vsi_seid;
5979         ctxt.pf_num = pf->hw.pf_id;
5980         ctxt.vf_num = 0;
5981         aq_ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
5982         if (aq_ret) {
5983                 dev_info(&pf->pdev->dev,
5984                          "%s couldn't get PF vsi config, err %d, aq_err %d\n",
5985                          __func__, aq_ret, pf->hw.aq.asq_last_status);
5986                 return;
5987         }
5988         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
5989         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
5990         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
5991
5992         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
5993         if (aq_ret) {
5994                 dev_info(&pf->pdev->dev,
5995                          "%s: update vsi switch failed, aq_err=%d\n",
5996                          __func__, vsi->back->hw.aq.asq_last_status);
5997         }
5998 }
5999
6000 /**
6001  * i40e_disable_pf_switch_lb
6002  * @pf: pointer to the PF structure
6003  *
6004  * disable switch loop back or die - no point in a return value
6005  **/
6006 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6007 {
6008         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6009         struct i40e_vsi_context ctxt;
6010         int aq_ret;
6011
6012         ctxt.seid = pf->main_vsi_seid;
6013         ctxt.pf_num = pf->hw.pf_id;
6014         ctxt.vf_num = 0;
6015         aq_ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6016         if (aq_ret) {
6017                 dev_info(&pf->pdev->dev,
6018                          "%s couldn't get PF vsi config, err %d, aq_err %d\n",
6019                          __func__, aq_ret, pf->hw.aq.asq_last_status);
6020                 return;
6021         }
6022         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6023         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6024         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6025
6026         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6027         if (aq_ret) {
6028                 dev_info(&pf->pdev->dev,
6029                          "%s: update vsi switch failed, aq_err=%d\n",
6030                          __func__, vsi->back->hw.aq.asq_last_status);
6031         }
6032 }
6033
6034 /**
6035  * i40e_config_bridge_mode - Configure the HW bridge mode
6036  * @veb: pointer to the bridge instance
6037  *
6038  * Configure the loop back mode for the LAN VSI that is downlink to the
6039  * specified HW bridge instance. It is expected this function is called
6040  * when a new HW bridge is instantiated.
6041  **/
6042 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6043 {
6044         struct i40e_pf *pf = veb->pf;
6045
6046         dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6047                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6048         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6049                 i40e_disable_pf_switch_lb(pf);
6050         else
6051                 i40e_enable_pf_switch_lb(pf);
6052 }
6053
6054 /**
6055  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6056  * @veb: pointer to the VEB instance
6057  *
6058  * This is a recursive function that first builds the attached VSIs then
6059  * recurses in to build the next layer of VEB.  We track the connections
6060  * through our own index numbers because the seid's from the HW could
6061  * change across the reset.
6062  **/
6063 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6064 {
6065         struct i40e_vsi *ctl_vsi = NULL;
6066         struct i40e_pf *pf = veb->pf;
6067         int v, veb_idx;
6068         int ret;
6069
6070         /* build VSI that owns this VEB, temporarily attached to base VEB */
6071         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6072                 if (pf->vsi[v] &&
6073                     pf->vsi[v]->veb_idx == veb->idx &&
6074                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6075                         ctl_vsi = pf->vsi[v];
6076                         break;
6077                 }
6078         }
6079         if (!ctl_vsi) {
6080                 dev_info(&pf->pdev->dev,
6081                          "missing owner VSI for veb_idx %d\n", veb->idx);
6082                 ret = -ENOENT;
6083                 goto end_reconstitute;
6084         }
6085         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6086                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6087         ret = i40e_add_vsi(ctl_vsi);
6088         if (ret) {
6089                 dev_info(&pf->pdev->dev,
6090                          "rebuild of owner VSI failed: %d\n", ret);
6091                 goto end_reconstitute;
6092         }
6093         i40e_vsi_reset_stats(ctl_vsi);
6094
6095         /* create the VEB in the switch and move the VSI onto the VEB */
6096         ret = i40e_add_veb(veb, ctl_vsi);
6097         if (ret)
6098                 goto end_reconstitute;
6099
6100         i40e_config_bridge_mode(veb);
6101
6102         /* create the remaining VSIs attached to this VEB */
6103         for (v = 0; v < pf->num_alloc_vsi; v++) {
6104                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6105                         continue;
6106
6107                 if (pf->vsi[v]->veb_idx == veb->idx) {
6108                         struct i40e_vsi *vsi = pf->vsi[v];
6109                         vsi->uplink_seid = veb->seid;
6110                         ret = i40e_add_vsi(vsi);
6111                         if (ret) {
6112                                 dev_info(&pf->pdev->dev,
6113                                          "rebuild of vsi_idx %d failed: %d\n",
6114                                          v, ret);
6115                                 goto end_reconstitute;
6116                         }
6117                         i40e_vsi_reset_stats(vsi);
6118                 }
6119         }
6120
6121         /* create any VEBs attached to this VEB - RECURSION */
6122         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6123                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6124                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6125                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6126                         if (ret)
6127                                 break;
6128                 }
6129         }
6130
6131 end_reconstitute:
6132         return ret;
6133 }
6134
6135 /**
6136  * i40e_get_capabilities - get info about the HW
6137  * @pf: the PF struct
6138  **/
6139 static int i40e_get_capabilities(struct i40e_pf *pf)
6140 {
6141         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6142         u16 data_size;
6143         int buf_len;
6144         int err;
6145
6146         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6147         do {
6148                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6149                 if (!cap_buf)
6150                         return -ENOMEM;
6151
6152                 /* this loads the data into the hw struct for us */
6153                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6154                                             &data_size,
6155                                             i40e_aqc_opc_list_func_capabilities,
6156                                             NULL);
6157                 /* data loaded, buffer no longer needed */
6158                 kfree(cap_buf);
6159
6160                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6161                         /* retry with a larger buffer */
6162                         buf_len = data_size;
6163                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6164                         dev_info(&pf->pdev->dev,
6165                                  "capability discovery failed: aq=%d\n",
6166                                  pf->hw.aq.asq_last_status);
6167                         return -ENODEV;
6168                 }
6169         } while (err);
6170
6171         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6172             (pf->hw.aq.fw_maj_ver < 2)) {
6173                 pf->hw.func_caps.num_msix_vectors++;
6174                 pf->hw.func_caps.num_msix_vectors_vf++;
6175         }
6176
6177         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6178                 dev_info(&pf->pdev->dev,
6179                          "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",
6180                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6181                          pf->hw.func_caps.num_msix_vectors,
6182                          pf->hw.func_caps.num_msix_vectors_vf,
6183                          pf->hw.func_caps.fd_filters_guaranteed,
6184                          pf->hw.func_caps.fd_filters_best_effort,
6185                          pf->hw.func_caps.num_tx_qp,
6186                          pf->hw.func_caps.num_vsis);
6187
6188 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6189                        + pf->hw.func_caps.num_vfs)
6190         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6191                 dev_info(&pf->pdev->dev,
6192                          "got num_vsis %d, setting num_vsis to %d\n",
6193                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6194                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6195         }
6196
6197         return 0;
6198 }
6199
6200 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6201
6202 /**
6203  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6204  * @pf: board private structure
6205  **/
6206 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6207 {
6208         struct i40e_vsi *vsi;
6209         int i;
6210
6211         /* quick workaround for an NVM issue that leaves a critical register
6212          * uninitialized
6213          */
6214         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6215                 static const u32 hkey[] = {
6216                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6217                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6218                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6219                         0x95b3a76d};
6220
6221                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6222                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6223         }
6224
6225         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6226                 return;
6227
6228         /* find existing VSI and see if it needs configuring */
6229         vsi = NULL;
6230         for (i = 0; i < pf->num_alloc_vsi; i++) {
6231                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6232                         vsi = pf->vsi[i];
6233                         break;
6234                 }
6235         }
6236
6237         /* create a new VSI if none exists */
6238         if (!vsi) {
6239                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6240                                      pf->vsi[pf->lan_vsi]->seid, 0);
6241                 if (!vsi) {
6242                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6243                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6244                         return;
6245                 }
6246         }
6247
6248         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6249 }
6250
6251 /**
6252  * i40e_fdir_teardown - release the Flow Director resources
6253  * @pf: board private structure
6254  **/
6255 static void i40e_fdir_teardown(struct i40e_pf *pf)
6256 {
6257         int i;
6258
6259         i40e_fdir_filter_exit(pf);
6260         for (i = 0; i < pf->num_alloc_vsi; i++) {
6261                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6262                         i40e_vsi_release(pf->vsi[i]);
6263                         break;
6264                 }
6265         }
6266 }
6267
6268 /**
6269  * i40e_prep_for_reset - prep for the core to reset
6270  * @pf: board private structure
6271  *
6272  * Close up the VFs and other things in prep for PF Reset.
6273   **/
6274 static void i40e_prep_for_reset(struct i40e_pf *pf)
6275 {
6276         struct i40e_hw *hw = &pf->hw;
6277         i40e_status ret = 0;
6278         u32 v;
6279
6280         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6281         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6282                 return;
6283
6284         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6285
6286         /* quiesce the VSIs and their queues that are not already DOWN */
6287         i40e_pf_quiesce_all_vsi(pf);
6288
6289         for (v = 0; v < pf->num_alloc_vsi; v++) {
6290                 if (pf->vsi[v])
6291                         pf->vsi[v]->seid = 0;
6292         }
6293
6294         i40e_shutdown_adminq(&pf->hw);
6295
6296         /* call shutdown HMC */
6297         if (hw->hmc.hmc_obj) {
6298                 ret = i40e_shutdown_lan_hmc(hw);
6299                 if (ret)
6300                         dev_warn(&pf->pdev->dev,
6301                                  "shutdown_lan_hmc failed: %d\n", ret);
6302         }
6303 }
6304
6305 /**
6306  * i40e_send_version - update firmware with driver version
6307  * @pf: PF struct
6308  */
6309 static void i40e_send_version(struct i40e_pf *pf)
6310 {
6311         struct i40e_driver_version dv;
6312
6313         dv.major_version = DRV_VERSION_MAJOR;
6314         dv.minor_version = DRV_VERSION_MINOR;
6315         dv.build_version = DRV_VERSION_BUILD;
6316         dv.subbuild_version = 0;
6317         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6318         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6319 }
6320
6321 /**
6322  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6323  * @pf: board private structure
6324  * @reinit: if the Main VSI needs to re-initialized.
6325  **/
6326 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6327 {
6328         struct i40e_hw *hw = &pf->hw;
6329         u8 set_fc_aq_fail = 0;
6330         i40e_status ret;
6331         u32 v;
6332
6333         /* Now we wait for GRST to settle out.
6334          * We don't have to delete the VEBs or VSIs from the hw switch
6335          * because the reset will make them disappear.
6336          */
6337         ret = i40e_pf_reset(hw);
6338         if (ret) {
6339                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6340                 set_bit(__I40E_RESET_FAILED, &pf->state);
6341                 goto clear_recovery;
6342         }
6343         pf->pfr_count++;
6344
6345         if (test_bit(__I40E_DOWN, &pf->state))
6346                 goto clear_recovery;
6347         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6348
6349         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6350         ret = i40e_init_adminq(&pf->hw);
6351         if (ret) {
6352                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
6353                 goto clear_recovery;
6354         }
6355
6356         /* re-verify the eeprom if we just had an EMP reset */
6357         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6358                 i40e_verify_eeprom(pf);
6359
6360         i40e_clear_pxe_mode(hw);
6361         ret = i40e_get_capabilities(pf);
6362         if (ret) {
6363                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
6364                          ret);
6365                 goto end_core_reset;
6366         }
6367
6368         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6369                                 hw->func_caps.num_rx_qp,
6370                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6371         if (ret) {
6372                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6373                 goto end_core_reset;
6374         }
6375         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6376         if (ret) {
6377                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6378                 goto end_core_reset;
6379         }
6380
6381 #ifdef CONFIG_I40E_DCB
6382         ret = i40e_init_pf_dcb(pf);
6383         if (ret) {
6384                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6385                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6386                 /* Continue without DCB enabled */
6387         }
6388 #endif /* CONFIG_I40E_DCB */
6389 #ifdef I40E_FCOE
6390         ret = i40e_init_pf_fcoe(pf);
6391         if (ret)
6392                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6393
6394 #endif
6395         /* do basic switch setup */
6396         ret = i40e_setup_pf_switch(pf, reinit);
6397         if (ret)
6398                 goto end_core_reset;
6399
6400         /* driver is only interested in link up/down and module qualification
6401          * reports from firmware
6402          */
6403         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6404                                        I40E_AQ_EVENT_LINK_UPDOWN |
6405                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6406         if (ret)
6407                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", ret);
6408
6409         /* make sure our flow control settings are restored */
6410         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6411         if (ret)
6412                 dev_info(&pf->pdev->dev, "set fc fail, aq_err %d\n", ret);
6413
6414         /* Rebuild the VSIs and VEBs that existed before reset.
6415          * They are still in our local switch element arrays, so only
6416          * need to rebuild the switch model in the HW.
6417          *
6418          * If there were VEBs but the reconstitution failed, we'll try
6419          * try to recover minimal use by getting the basic PF VSI working.
6420          */
6421         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6422                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6423                 /* find the one VEB connected to the MAC, and find orphans */
6424                 for (v = 0; v < I40E_MAX_VEB; v++) {
6425                         if (!pf->veb[v])
6426                                 continue;
6427
6428                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6429                             pf->veb[v]->uplink_seid == 0) {
6430                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6431
6432                                 if (!ret)
6433                                         continue;
6434
6435                                 /* If Main VEB failed, we're in deep doodoo,
6436                                  * so give up rebuilding the switch and set up
6437                                  * for minimal rebuild of PF VSI.
6438                                  * If orphan failed, we'll report the error
6439                                  * but try to keep going.
6440                                  */
6441                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6442                                         dev_info(&pf->pdev->dev,
6443                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6444                                                  ret);
6445                                         pf->vsi[pf->lan_vsi]->uplink_seid
6446                                                                 = pf->mac_seid;
6447                                         break;
6448                                 } else if (pf->veb[v]->uplink_seid == 0) {
6449                                         dev_info(&pf->pdev->dev,
6450                                                  "rebuild of orphan VEB failed: %d\n",
6451                                                  ret);
6452                                 }
6453                         }
6454                 }
6455         }
6456
6457         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6458                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6459                 /* no VEB, so rebuild only the Main VSI */
6460                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6461                 if (ret) {
6462                         dev_info(&pf->pdev->dev,
6463                                  "rebuild of Main VSI failed: %d\n", ret);
6464                         goto end_core_reset;
6465                 }
6466         }
6467
6468         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6469             (pf->hw.aq.fw_maj_ver < 4)) {
6470                 msleep(75);
6471                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6472                 if (ret)
6473                         dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
6474                                  pf->hw.aq.asq_last_status);
6475         }
6476         /* reinit the misc interrupt */
6477         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6478                 ret = i40e_setup_misc_vector(pf);
6479
6480         /* restart the VSIs that were rebuilt and running before the reset */
6481         i40e_pf_unquiesce_all_vsi(pf);
6482
6483         if (pf->num_alloc_vfs) {
6484                 for (v = 0; v < pf->num_alloc_vfs; v++)
6485                         i40e_reset_vf(&pf->vf[v], true);
6486         }
6487
6488         /* tell the firmware that we're starting */
6489         i40e_send_version(pf);
6490
6491 end_core_reset:
6492         clear_bit(__I40E_RESET_FAILED, &pf->state);
6493 clear_recovery:
6494         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6495 }
6496
6497 /**
6498  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6499  * @pf: board private structure
6500  *
6501  * Close up the VFs and other things in prep for a Core Reset,
6502  * then get ready to rebuild the world.
6503  **/
6504 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6505 {
6506         i40e_prep_for_reset(pf);
6507         i40e_reset_and_rebuild(pf, false);
6508 }
6509
6510 /**
6511  * i40e_handle_mdd_event
6512  * @pf: pointer to the PF structure
6513  *
6514  * Called from the MDD irq handler to identify possibly malicious vfs
6515  **/
6516 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6517 {
6518         struct i40e_hw *hw = &pf->hw;
6519         bool mdd_detected = false;
6520         bool pf_mdd_detected = false;
6521         struct i40e_vf *vf;
6522         u32 reg;
6523         int i;
6524
6525         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6526                 return;
6527
6528         /* find what triggered the MDD event */
6529         reg = rd32(hw, I40E_GL_MDET_TX);
6530         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6531                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6532                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6533                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6534                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6535                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6536                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6537                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6538                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6539                                 pf->hw.func_caps.base_queue;
6540                 if (netif_msg_tx_err(pf))
6541                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6542                                  event, queue, pf_num, vf_num);
6543                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6544                 mdd_detected = true;
6545         }
6546         reg = rd32(hw, I40E_GL_MDET_RX);
6547         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6548                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6549                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6550                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6551                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6552                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6553                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6554                                 pf->hw.func_caps.base_queue;
6555                 if (netif_msg_rx_err(pf))
6556                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6557                                  event, queue, func);
6558                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6559                 mdd_detected = true;
6560         }
6561
6562         if (mdd_detected) {
6563                 reg = rd32(hw, I40E_PF_MDET_TX);
6564                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6565                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6566                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6567                         pf_mdd_detected = true;
6568                 }
6569                 reg = rd32(hw, I40E_PF_MDET_RX);
6570                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6571                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6572                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6573                         pf_mdd_detected = true;
6574                 }
6575                 /* Queue belongs to the PF, initiate a reset */
6576                 if (pf_mdd_detected) {
6577                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6578                         i40e_service_event_schedule(pf);
6579                 }
6580         }
6581
6582         /* see if one of the VFs needs its hand slapped */
6583         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6584                 vf = &(pf->vf[i]);
6585                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6586                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6587                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6588                         vf->num_mdd_events++;
6589                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6590                                  i);
6591                 }
6592
6593                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6594                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6595                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6596                         vf->num_mdd_events++;
6597                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6598                                  i);
6599                 }
6600
6601                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6602                         dev_info(&pf->pdev->dev,
6603                                  "Too many MDD events on VF %d, disabled\n", i);
6604                         dev_info(&pf->pdev->dev,
6605                                  "Use PF Control I/F to re-enable the VF\n");
6606                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6607                 }
6608         }
6609
6610         /* re-enable mdd interrupt cause */
6611         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6612         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6613         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6614         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6615         i40e_flush(hw);
6616 }
6617
6618 #ifdef CONFIG_I40E_VXLAN
6619 /**
6620  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6621  * @pf: board private structure
6622  **/
6623 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6624 {
6625         struct i40e_hw *hw = &pf->hw;
6626         i40e_status ret;
6627         __be16 port;
6628         int i;
6629
6630         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6631                 return;
6632
6633         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6634
6635         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6636                 if (pf->pending_vxlan_bitmap & (1 << i)) {
6637                         pf->pending_vxlan_bitmap &= ~(1 << i);
6638                         port = pf->vxlan_ports[i];
6639                         if (port)
6640                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
6641                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6642                                                      NULL, NULL);
6643                         else
6644                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
6645
6646                         if (ret) {
6647                                 dev_info(&pf->pdev->dev,
6648                                          "%s vxlan port %d, index %d failed, err %d, aq_err %d\n",
6649                                          port ? "add" : "delete",
6650                                          ntohs(port), i, ret,
6651                                          pf->hw.aq.asq_last_status);
6652                                 pf->vxlan_ports[i] = 0;
6653                         }
6654                 }
6655         }
6656 }
6657
6658 #endif
6659 /**
6660  * i40e_service_task - Run the driver's async subtasks
6661  * @work: pointer to work_struct containing our data
6662  **/
6663 static void i40e_service_task(struct work_struct *work)
6664 {
6665         struct i40e_pf *pf = container_of(work,
6666                                           struct i40e_pf,
6667                                           service_task);
6668         unsigned long start_time = jiffies;
6669
6670         /* don't bother with service tasks if a reset is in progress */
6671         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6672                 i40e_service_event_complete(pf);
6673                 return;
6674         }
6675
6676         i40e_reset_subtask(pf);
6677         i40e_handle_mdd_event(pf);
6678         i40e_vc_process_vflr_event(pf);
6679         i40e_watchdog_subtask(pf);
6680         i40e_fdir_reinit_subtask(pf);
6681         i40e_sync_filters_subtask(pf);
6682 #ifdef CONFIG_I40E_VXLAN
6683         i40e_sync_vxlan_filters_subtask(pf);
6684 #endif
6685         i40e_clean_adminq_subtask(pf);
6686
6687         i40e_service_event_complete(pf);
6688
6689         /* If the tasks have taken longer than one timer cycle or there
6690          * is more work to be done, reschedule the service task now
6691          * rather than wait for the timer to tick again.
6692          */
6693         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6694             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6695             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6696             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6697                 i40e_service_event_schedule(pf);
6698 }
6699
6700 /**
6701  * i40e_service_timer - timer callback
6702  * @data: pointer to PF struct
6703  **/
6704 static void i40e_service_timer(unsigned long data)
6705 {
6706         struct i40e_pf *pf = (struct i40e_pf *)data;
6707
6708         mod_timer(&pf->service_timer,
6709                   round_jiffies(jiffies + pf->service_timer_period));
6710         i40e_service_event_schedule(pf);
6711 }
6712
6713 /**
6714  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6715  * @vsi: the VSI being configured
6716  **/
6717 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6718 {
6719         struct i40e_pf *pf = vsi->back;
6720
6721         switch (vsi->type) {
6722         case I40E_VSI_MAIN:
6723                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6724                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6725                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6726                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6727                         vsi->num_q_vectors = pf->num_lan_msix;
6728                 else
6729                         vsi->num_q_vectors = 1;
6730
6731                 break;
6732
6733         case I40E_VSI_FDIR:
6734                 vsi->alloc_queue_pairs = 1;
6735                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6736                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6737                 vsi->num_q_vectors = 1;
6738                 break;
6739
6740         case I40E_VSI_VMDQ2:
6741                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6742                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6743                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6744                 vsi->num_q_vectors = pf->num_vmdq_msix;
6745                 break;
6746
6747         case I40E_VSI_SRIOV:
6748                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6749                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6750                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6751                 break;
6752
6753 #ifdef I40E_FCOE
6754         case I40E_VSI_FCOE:
6755                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6756                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6757                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6758                 vsi->num_q_vectors = pf->num_fcoe_msix;
6759                 break;
6760
6761 #endif /* I40E_FCOE */
6762         default:
6763                 WARN_ON(1);
6764                 return -ENODATA;
6765         }
6766
6767         return 0;
6768 }
6769
6770 /**
6771  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6772  * @type: VSI pointer
6773  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6774  *
6775  * On error: returns error code (negative)
6776  * On success: returns 0
6777  **/
6778 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6779 {
6780         int size;
6781         int ret = 0;
6782
6783         /* allocate memory for both Tx and Rx ring pointers */
6784         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6785         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6786         if (!vsi->tx_rings)
6787                 return -ENOMEM;
6788         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6789
6790         if (alloc_qvectors) {
6791                 /* allocate memory for q_vector pointers */
6792                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6793                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6794                 if (!vsi->q_vectors) {
6795                         ret = -ENOMEM;
6796                         goto err_vectors;
6797                 }
6798         }
6799         return ret;
6800
6801 err_vectors:
6802         kfree(vsi->tx_rings);
6803         return ret;
6804 }
6805
6806 /**
6807  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6808  * @pf: board private structure
6809  * @type: type of VSI
6810  *
6811  * On error: returns error code (negative)
6812  * On success: returns vsi index in PF (positive)
6813  **/
6814 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6815 {
6816         int ret = -ENODEV;
6817         struct i40e_vsi *vsi;
6818         int vsi_idx;
6819         int i;
6820
6821         /* Need to protect the allocation of the VSIs at the PF level */
6822         mutex_lock(&pf->switch_mutex);
6823
6824         /* VSI list may be fragmented if VSI creation/destruction has
6825          * been happening.  We can afford to do a quick scan to look
6826          * for any free VSIs in the list.
6827          *
6828          * find next empty vsi slot, looping back around if necessary
6829          */
6830         i = pf->next_vsi;
6831         while (i < pf->num_alloc_vsi && pf->vsi[i])
6832                 i++;
6833         if (i >= pf->num_alloc_vsi) {
6834                 i = 0;
6835                 while (i < pf->next_vsi && pf->vsi[i])
6836                         i++;
6837         }
6838
6839         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6840                 vsi_idx = i;             /* Found one! */
6841         } else {
6842                 ret = -ENODEV;
6843                 goto unlock_pf;  /* out of VSI slots! */
6844         }
6845         pf->next_vsi = ++i;
6846
6847         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6848         if (!vsi) {
6849                 ret = -ENOMEM;
6850                 goto unlock_pf;
6851         }
6852         vsi->type = type;
6853         vsi->back = pf;
6854         set_bit(__I40E_DOWN, &vsi->state);
6855         vsi->flags = 0;
6856         vsi->idx = vsi_idx;
6857         vsi->rx_itr_setting = pf->rx_itr_default;
6858         vsi->tx_itr_setting = pf->tx_itr_default;
6859         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
6860                                 pf->rss_table_size : 64;
6861         vsi->netdev_registered = false;
6862         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6863         INIT_LIST_HEAD(&vsi->mac_filter_list);
6864         vsi->irqs_ready = false;
6865
6866         ret = i40e_set_num_rings_in_vsi(vsi);
6867         if (ret)
6868                 goto err_rings;
6869
6870         ret = i40e_vsi_alloc_arrays(vsi, true);
6871         if (ret)
6872                 goto err_rings;
6873
6874         /* Setup default MSIX irq handler for VSI */
6875         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6876
6877         pf->vsi[vsi_idx] = vsi;
6878         ret = vsi_idx;
6879         goto unlock_pf;
6880
6881 err_rings:
6882         pf->next_vsi = i - 1;
6883         kfree(vsi);
6884 unlock_pf:
6885         mutex_unlock(&pf->switch_mutex);
6886         return ret;
6887 }
6888
6889 /**
6890  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6891  * @type: VSI pointer
6892  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6893  *
6894  * On error: returns error code (negative)
6895  * On success: returns 0
6896  **/
6897 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6898 {
6899         /* free the ring and vector containers */
6900         if (free_qvectors) {
6901                 kfree(vsi->q_vectors);
6902                 vsi->q_vectors = NULL;
6903         }
6904         kfree(vsi->tx_rings);
6905         vsi->tx_rings = NULL;
6906         vsi->rx_rings = NULL;
6907 }
6908
6909 /**
6910  * i40e_vsi_clear - Deallocate the VSI provided
6911  * @vsi: the VSI being un-configured
6912  **/
6913 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6914 {
6915         struct i40e_pf *pf;
6916
6917         if (!vsi)
6918                 return 0;
6919
6920         if (!vsi->back)
6921                 goto free_vsi;
6922         pf = vsi->back;
6923
6924         mutex_lock(&pf->switch_mutex);
6925         if (!pf->vsi[vsi->idx]) {
6926                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6927                         vsi->idx, vsi->idx, vsi, vsi->type);
6928                 goto unlock_vsi;
6929         }
6930
6931         if (pf->vsi[vsi->idx] != vsi) {
6932                 dev_err(&pf->pdev->dev,
6933                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6934                         pf->vsi[vsi->idx]->idx,
6935                         pf->vsi[vsi->idx],
6936                         pf->vsi[vsi->idx]->type,
6937                         vsi->idx, vsi, vsi->type);
6938                 goto unlock_vsi;
6939         }
6940
6941         /* updates the PF for this cleared vsi */
6942         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6943         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6944
6945         i40e_vsi_free_arrays(vsi, true);
6946
6947         pf->vsi[vsi->idx] = NULL;
6948         if (vsi->idx < pf->next_vsi)
6949                 pf->next_vsi = vsi->idx;
6950
6951 unlock_vsi:
6952         mutex_unlock(&pf->switch_mutex);
6953 free_vsi:
6954         kfree(vsi);
6955
6956         return 0;
6957 }
6958
6959 /**
6960  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6961  * @vsi: the VSI being cleaned
6962  **/
6963 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6964 {
6965         int i;
6966
6967         if (vsi->tx_rings && vsi->tx_rings[0]) {
6968                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6969                         kfree_rcu(vsi->tx_rings[i], rcu);
6970                         vsi->tx_rings[i] = NULL;
6971                         vsi->rx_rings[i] = NULL;
6972                 }
6973         }
6974 }
6975
6976 /**
6977  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6978  * @vsi: the VSI being configured
6979  **/
6980 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6981 {
6982         struct i40e_ring *tx_ring, *rx_ring;
6983         struct i40e_pf *pf = vsi->back;
6984         int i;
6985
6986         /* Set basic values in the rings to be used later during open() */
6987         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6988                 /* allocate space for both Tx and Rx in one shot */
6989                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6990                 if (!tx_ring)
6991                         goto err_out;
6992
6993                 tx_ring->queue_index = i;
6994                 tx_ring->reg_idx = vsi->base_queue + i;
6995                 tx_ring->ring_active = false;
6996                 tx_ring->vsi = vsi;
6997                 tx_ring->netdev = vsi->netdev;
6998                 tx_ring->dev = &pf->pdev->dev;
6999                 tx_ring->count = vsi->num_desc;
7000                 tx_ring->size = 0;
7001                 tx_ring->dcb_tc = 0;
7002                 vsi->tx_rings[i] = tx_ring;
7003
7004                 rx_ring = &tx_ring[1];
7005                 rx_ring->queue_index = i;
7006                 rx_ring->reg_idx = vsi->base_queue + i;
7007                 rx_ring->ring_active = false;
7008                 rx_ring->vsi = vsi;
7009                 rx_ring->netdev = vsi->netdev;
7010                 rx_ring->dev = &pf->pdev->dev;
7011                 rx_ring->count = vsi->num_desc;
7012                 rx_ring->size = 0;
7013                 rx_ring->dcb_tc = 0;
7014                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7015                         set_ring_16byte_desc_enabled(rx_ring);
7016                 else
7017                         clear_ring_16byte_desc_enabled(rx_ring);
7018                 vsi->rx_rings[i] = rx_ring;
7019         }
7020
7021         return 0;
7022
7023 err_out:
7024         i40e_vsi_clear_rings(vsi);
7025         return -ENOMEM;
7026 }
7027
7028 /**
7029  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7030  * @pf: board private structure
7031  * @vectors: the number of MSI-X vectors to request
7032  *
7033  * Returns the number of vectors reserved, or error
7034  **/
7035 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7036 {
7037         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7038                                         I40E_MIN_MSIX, vectors);
7039         if (vectors < 0) {
7040                 dev_info(&pf->pdev->dev,
7041                          "MSI-X vector reservation failed: %d\n", vectors);
7042                 vectors = 0;
7043         }
7044
7045         return vectors;
7046 }
7047
7048 /**
7049  * i40e_init_msix - Setup the MSIX capability
7050  * @pf: board private structure
7051  *
7052  * Work with the OS to set up the MSIX vectors needed.
7053  *
7054  * Returns the number of vectors reserved or negative on failure
7055  **/
7056 static int i40e_init_msix(struct i40e_pf *pf)
7057 {
7058         struct i40e_hw *hw = &pf->hw;
7059         int vectors_left;
7060         int v_budget, i;
7061         int v_actual;
7062
7063         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7064                 return -ENODEV;
7065
7066         /* The number of vectors we'll request will be comprised of:
7067          *   - Add 1 for "other" cause for Admin Queue events, etc.
7068          *   - The number of LAN queue pairs
7069          *      - Queues being used for RSS.
7070          *              We don't need as many as max_rss_size vectors.
7071          *              use rss_size instead in the calculation since that
7072          *              is governed by number of cpus in the system.
7073          *      - assumes symmetric Tx/Rx pairing
7074          *   - The number of VMDq pairs
7075 #ifdef I40E_FCOE
7076          *   - The number of FCOE qps.
7077 #endif
7078          * Once we count this up, try the request.
7079          *
7080          * If we can't get what we want, we'll simplify to nearly nothing
7081          * and try again.  If that still fails, we punt.
7082          */
7083         vectors_left = hw->func_caps.num_msix_vectors;
7084         v_budget = 0;
7085
7086         /* reserve one vector for miscellaneous handler */
7087         if (vectors_left) {
7088                 v_budget++;
7089                 vectors_left--;
7090         }
7091
7092         /* reserve vectors for the main PF traffic queues */
7093         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7094         vectors_left -= pf->num_lan_msix;
7095         v_budget += pf->num_lan_msix;
7096
7097         /* reserve one vector for sideband flow director */
7098         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7099                 if (vectors_left) {
7100                         v_budget++;
7101                         vectors_left--;
7102                 } else {
7103                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7104                 }
7105         }
7106
7107 #ifdef I40E_FCOE
7108         /* can we reserve enough for FCoE? */
7109         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7110                 if (!vectors_left)
7111                         pf->num_fcoe_msix = 0;
7112                 else if (vectors_left >= pf->num_fcoe_qps)
7113                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7114                 else
7115                         pf->num_fcoe_msix = 1;
7116                 v_budget += pf->num_fcoe_msix;
7117                 vectors_left -= pf->num_fcoe_msix;
7118         }
7119
7120 #endif
7121         /* any vectors left over go for VMDq support */
7122         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7123                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7124                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7125
7126                 /* if we're short on vectors for what's desired, we limit
7127                  * the queues per vmdq.  If this is still more than are
7128                  * available, the user will need to change the number of
7129                  * queues/vectors used by the PF later with the ethtool
7130                  * channels command
7131                  */
7132                 if (vmdq_vecs < vmdq_vecs_wanted)
7133                         pf->num_vmdq_qps = 1;
7134                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7135
7136                 v_budget += vmdq_vecs;
7137                 vectors_left -= vmdq_vecs;
7138         }
7139
7140         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7141                                    GFP_KERNEL);
7142         if (!pf->msix_entries)
7143                 return -ENOMEM;
7144
7145         for (i = 0; i < v_budget; i++)
7146                 pf->msix_entries[i].entry = i;
7147         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7148
7149         if (v_actual != v_budget) {
7150                 /* If we have limited resources, we will start with no vectors
7151                  * for the special features and then allocate vectors to some
7152                  * of these features based on the policy and at the end disable
7153                  * the features that did not get any vectors.
7154                  */
7155 #ifdef I40E_FCOE
7156                 pf->num_fcoe_qps = 0;
7157                 pf->num_fcoe_msix = 0;
7158 #endif
7159                 pf->num_vmdq_msix = 0;
7160         }
7161
7162         if (v_actual < I40E_MIN_MSIX) {
7163                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7164                 kfree(pf->msix_entries);
7165                 pf->msix_entries = NULL;
7166                 return -ENODEV;
7167
7168         } else if (v_actual == I40E_MIN_MSIX) {
7169                 /* Adjust for minimal MSIX use */
7170                 pf->num_vmdq_vsis = 0;
7171                 pf->num_vmdq_qps = 0;
7172                 pf->num_lan_qps = 1;
7173                 pf->num_lan_msix = 1;
7174
7175         } else if (v_actual != v_budget) {
7176                 int vec;
7177
7178                 /* reserve the misc vector */
7179                 vec = v_actual - 1;
7180
7181                 /* Scale vector usage down */
7182                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7183                 pf->num_vmdq_vsis = 1;
7184                 pf->num_vmdq_qps = 1;
7185                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7186
7187                 /* partition out the remaining vectors */
7188                 switch (vec) {
7189                 case 2:
7190                         pf->num_lan_msix = 1;
7191                         break;
7192                 case 3:
7193 #ifdef I40E_FCOE
7194                         /* give one vector to FCoE */
7195                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7196                                 pf->num_lan_msix = 1;
7197                                 pf->num_fcoe_msix = 1;
7198                         }
7199 #else
7200                         pf->num_lan_msix = 2;
7201 #endif
7202                         break;
7203                 default:
7204 #ifdef I40E_FCOE
7205                         /* give one vector to FCoE */
7206                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7207                                 pf->num_fcoe_msix = 1;
7208                                 vec--;
7209                         }
7210 #endif
7211                         /* give the rest to the PF */
7212                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7213                         break;
7214                 }
7215         }
7216
7217         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7218             (pf->num_vmdq_msix == 0)) {
7219                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7220                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7221         }
7222 #ifdef I40E_FCOE
7223
7224         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7225                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7226                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7227         }
7228 #endif
7229         return v_actual;
7230 }
7231
7232 /**
7233  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7234  * @vsi: the VSI being configured
7235  * @v_idx: index of the vector in the vsi struct
7236  *
7237  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7238  **/
7239 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7240 {
7241         struct i40e_q_vector *q_vector;
7242
7243         /* allocate q_vector */
7244         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7245         if (!q_vector)
7246                 return -ENOMEM;
7247
7248         q_vector->vsi = vsi;
7249         q_vector->v_idx = v_idx;
7250         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7251         if (vsi->netdev)
7252                 netif_napi_add(vsi->netdev, &q_vector->napi,
7253                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7254
7255         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7256         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7257
7258         /* tie q_vector and vsi together */
7259         vsi->q_vectors[v_idx] = q_vector;
7260
7261         return 0;
7262 }
7263
7264 /**
7265  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7266  * @vsi: the VSI being configured
7267  *
7268  * We allocate one q_vector per queue interrupt.  If allocation fails we
7269  * return -ENOMEM.
7270  **/
7271 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7272 {
7273         struct i40e_pf *pf = vsi->back;
7274         int v_idx, num_q_vectors;
7275         int err;
7276
7277         /* if not MSIX, give the one vector only to the LAN VSI */
7278         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7279                 num_q_vectors = vsi->num_q_vectors;
7280         else if (vsi == pf->vsi[pf->lan_vsi])
7281                 num_q_vectors = 1;
7282         else
7283                 return -EINVAL;
7284
7285         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7286                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7287                 if (err)
7288                         goto err_out;
7289         }
7290
7291         return 0;
7292
7293 err_out:
7294         while (v_idx--)
7295                 i40e_free_q_vector(vsi, v_idx);
7296
7297         return err;
7298 }
7299
7300 /**
7301  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7302  * @pf: board private structure to initialize
7303  **/
7304 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7305 {
7306         int vectors = 0;
7307         ssize_t size;
7308
7309         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7310                 vectors = i40e_init_msix(pf);
7311                 if (vectors < 0) {
7312                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7313 #ifdef I40E_FCOE
7314                                        I40E_FLAG_FCOE_ENABLED   |
7315 #endif
7316                                        I40E_FLAG_RSS_ENABLED    |
7317                                        I40E_FLAG_DCB_CAPABLE    |
7318                                        I40E_FLAG_SRIOV_ENABLED  |
7319                                        I40E_FLAG_FD_SB_ENABLED  |
7320                                        I40E_FLAG_FD_ATR_ENABLED |
7321                                        I40E_FLAG_VMDQ_ENABLED);
7322
7323                         /* rework the queue expectations without MSIX */
7324                         i40e_determine_queue_usage(pf);
7325                 }
7326         }
7327
7328         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7329             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7330                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7331                 vectors = pci_enable_msi(pf->pdev);
7332                 if (vectors < 0) {
7333                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7334                                  vectors);
7335                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7336                 }
7337                 vectors = 1;  /* one MSI or Legacy vector */
7338         }
7339
7340         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7341                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7342
7343         /* set up vector assignment tracking */
7344         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7345         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7346         if (!pf->irq_pile) {
7347                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7348                 return -ENOMEM;
7349         }
7350         pf->irq_pile->num_entries = vectors;
7351         pf->irq_pile->search_hint = 0;
7352
7353         /* track first vector for misc interrupts, ignore return */
7354         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7355
7356         return 0;
7357 }
7358
7359 /**
7360  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7361  * @pf: board private structure
7362  *
7363  * This sets up the handler for MSIX 0, which is used to manage the
7364  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7365  * when in MSI or Legacy interrupt mode.
7366  **/
7367 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7368 {
7369         struct i40e_hw *hw = &pf->hw;
7370         int err = 0;
7371
7372         /* Only request the irq if this is the first time through, and
7373          * not when we're rebuilding after a Reset
7374          */
7375         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7376                 err = request_irq(pf->msix_entries[0].vector,
7377                                   i40e_intr, 0, pf->int_name, pf);
7378                 if (err) {
7379                         dev_info(&pf->pdev->dev,
7380                                  "request_irq for %s failed: %d\n",
7381                                  pf->int_name, err);
7382                         return -EFAULT;
7383                 }
7384         }
7385
7386         i40e_enable_misc_int_causes(pf);
7387
7388         /* associate no queues to the misc vector */
7389         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7390         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7391
7392         i40e_flush(hw);
7393
7394         i40e_irq_dynamic_enable_icr0(pf);
7395
7396         return err;
7397 }
7398
7399 /**
7400  * i40e_config_rss - Prepare for RSS if used
7401  * @pf: board private structure
7402  **/
7403 static int i40e_config_rss(struct i40e_pf *pf)
7404 {
7405         u32 rss_key[I40E_PFQF_HKEY_MAX_INDEX + 1];
7406         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7407         struct i40e_hw *hw = &pf->hw;
7408         u32 lut = 0;
7409         int i, j;
7410         u64 hena;
7411         u32 reg_val;
7412
7413         netdev_rss_key_fill(rss_key, sizeof(rss_key));
7414         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7415                 wr32(hw, I40E_PFQF_HKEY(i), rss_key[i]);
7416
7417         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7418         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7419                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7420         hena |= I40E_DEFAULT_RSS_HENA;
7421         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7422         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7423
7424         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7425
7426         /* Check capability and Set table size and register per hw expectation*/
7427         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7428         if (pf->rss_table_size == 512)
7429                 reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7430         else
7431                 reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7432         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7433
7434         /* Populate the LUT with max no. of queues in round robin fashion */
7435         for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
7436
7437                 /* The assumption is that lan qp count will be the highest
7438                  * qp count for any PF VSI that needs RSS.
7439                  * If multiple VSIs need RSS support, all the qp counts
7440                  * for those VSIs should be a power of 2 for RSS to work.
7441                  * If LAN VSI is the only consumer for RSS then this requirement
7442                  * is not necessary.
7443                  */
7444                 if (j == vsi->rss_size)
7445                         j = 0;
7446                 /* lut = 4-byte sliding window of 4 lut entries */
7447                 lut = (lut << 8) | (j &
7448                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
7449                 /* On i = 3, we have 4 entries in lut; write to the register */
7450                 if ((i & 3) == 3)
7451                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
7452         }
7453         i40e_flush(hw);
7454
7455         return 0;
7456 }
7457
7458 /**
7459  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7460  * @pf: board private structure
7461  * @queue_count: the requested queue count for rss.
7462  *
7463  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7464  * count which may be different from the requested queue count.
7465  **/
7466 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7467 {
7468         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7469         int new_rss_size;
7470
7471         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7472                 return 0;
7473
7474         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7475
7476         if (queue_count != vsi->num_queue_pairs) {
7477                 vsi->req_queue_pairs = queue_count;
7478                 i40e_prep_for_reset(pf);
7479
7480                 pf->rss_size = new_rss_size;
7481
7482                 i40e_reset_and_rebuild(pf, true);
7483                 i40e_config_rss(pf);
7484         }
7485         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7486         return pf->rss_size;
7487 }
7488
7489 /**
7490  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7491  * @pf: board private structure
7492  **/
7493 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7494 {
7495         i40e_status status;
7496         bool min_valid, max_valid;
7497         u32 max_bw, min_bw;
7498
7499         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7500                                            &min_valid, &max_valid);
7501
7502         if (!status) {
7503                 if (min_valid)
7504                         pf->npar_min_bw = min_bw;
7505                 if (max_valid)
7506                         pf->npar_max_bw = max_bw;
7507         }
7508
7509         return status;
7510 }
7511
7512 /**
7513  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7514  * @pf: board private structure
7515  **/
7516 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7517 {
7518         struct i40e_aqc_configure_partition_bw_data bw_data;
7519         i40e_status status;
7520
7521         /* Set the valid bit for this PF */
7522         bw_data.pf_valid_bits = cpu_to_le16(1 << pf->hw.pf_id);
7523         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7524         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7525
7526         /* Set the new bandwidths */
7527         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7528
7529         return status;
7530 }
7531
7532 /**
7533  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7534  * @pf: board private structure
7535  **/
7536 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7537 {
7538         /* Commit temporary BW setting to permanent NVM image */
7539         enum i40e_admin_queue_err last_aq_status;
7540         i40e_status ret;
7541         u16 nvm_word;
7542
7543         if (pf->hw.partition_id != 1) {
7544                 dev_info(&pf->pdev->dev,
7545                          "Commit BW only works on partition 1! This is partition %d",
7546                          pf->hw.partition_id);
7547                 ret = I40E_NOT_SUPPORTED;
7548                 goto bw_commit_out;
7549         }
7550
7551         /* Acquire NVM for read access */
7552         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7553         last_aq_status = pf->hw.aq.asq_last_status;
7554         if (ret) {
7555                 dev_info(&pf->pdev->dev,
7556                          "Cannot acquire NVM for read access, err %d: aq_err %d\n",
7557                          ret, last_aq_status);
7558                 goto bw_commit_out;
7559         }
7560
7561         /* Read word 0x10 of NVM - SW compatibility word 1 */
7562         ret = i40e_aq_read_nvm(&pf->hw,
7563                                I40E_SR_NVM_CONTROL_WORD,
7564                                0x10, sizeof(nvm_word), &nvm_word,
7565                                false, NULL);
7566         /* Save off last admin queue command status before releasing
7567          * the NVM
7568          */
7569         last_aq_status = pf->hw.aq.asq_last_status;
7570         i40e_release_nvm(&pf->hw);
7571         if (ret) {
7572                 dev_info(&pf->pdev->dev, "NVM read error, err %d aq_err %d\n",
7573                          ret, last_aq_status);
7574                 goto bw_commit_out;
7575         }
7576
7577         /* Wait a bit for NVM release to complete */
7578         msleep(50);
7579
7580         /* Acquire NVM for write access */
7581         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7582         last_aq_status = pf->hw.aq.asq_last_status;
7583         if (ret) {
7584                 dev_info(&pf->pdev->dev,
7585                          "Cannot acquire NVM for write access, err %d: aq_err %d\n",
7586                          ret, last_aq_status);
7587                 goto bw_commit_out;
7588         }
7589         /* Write it back out unchanged to initiate update NVM,
7590          * which will force a write of the shadow (alt) RAM to
7591          * the NVM - thus storing the bandwidth values permanently.
7592          */
7593         ret = i40e_aq_update_nvm(&pf->hw,
7594                                  I40E_SR_NVM_CONTROL_WORD,
7595                                  0x10, sizeof(nvm_word),
7596                                  &nvm_word, true, NULL);
7597         /* Save off last admin queue command status before releasing
7598          * the NVM
7599          */
7600         last_aq_status = pf->hw.aq.asq_last_status;
7601         i40e_release_nvm(&pf->hw);
7602         if (ret)
7603                 dev_info(&pf->pdev->dev,
7604                          "BW settings NOT SAVED, err %d aq_err %d\n",
7605                          ret, last_aq_status);
7606 bw_commit_out:
7607
7608         return ret;
7609 }
7610
7611 /**
7612  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7613  * @pf: board private structure to initialize
7614  *
7615  * i40e_sw_init initializes the Adapter private data structure.
7616  * Fields are initialized based on PCI device information and
7617  * OS network device settings (MTU size).
7618  **/
7619 static int i40e_sw_init(struct i40e_pf *pf)
7620 {
7621         int err = 0;
7622         int size;
7623
7624         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7625                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7626         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7627         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7628                 if (I40E_DEBUG_USER & debug)
7629                         pf->hw.debug_mask = debug;
7630                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7631                                                 I40E_DEFAULT_MSG_ENABLE);
7632         }
7633
7634         /* Set default capability flags */
7635         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7636                     I40E_FLAG_MSI_ENABLED     |
7637                     I40E_FLAG_MSIX_ENABLED;
7638
7639         if (iommu_present(&pci_bus_type))
7640                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7641         else
7642                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7643
7644         /* Set default ITR */
7645         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7646         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7647
7648         /* Depending on PF configurations, it is possible that the RSS
7649          * maximum might end up larger than the available queues
7650          */
7651         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
7652         pf->rss_size = 1;
7653         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7654         pf->rss_size_max = min_t(int, pf->rss_size_max,
7655                                  pf->hw.func_caps.num_tx_qp);
7656         if (pf->hw.func_caps.rss) {
7657                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7658                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7659         }
7660
7661         /* MFP mode enabled */
7662         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
7663                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7664                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7665                 if (i40e_get_npar_bw_setting(pf))
7666                         dev_warn(&pf->pdev->dev,
7667                                  "Could not get NPAR bw settings\n");
7668                 else
7669                         dev_info(&pf->pdev->dev,
7670                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7671                                  pf->npar_min_bw, pf->npar_max_bw);
7672         }
7673
7674         /* FW/NVM is not yet fixed in this regard */
7675         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7676             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7677                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7678                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7679                 /* Setup a counter for fd_atr per PF */
7680                 pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
7681                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7682                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7683                         /* Setup a counter for fd_sb per PF */
7684                         pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
7685                 } else {
7686                         dev_info(&pf->pdev->dev,
7687                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7688                 }
7689                 pf->fdir_pf_filter_count =
7690                                  pf->hw.func_caps.fd_filters_guaranteed;
7691                 pf->hw.fdir_shared_filter_count =
7692                                  pf->hw.func_caps.fd_filters_best_effort;
7693         }
7694
7695         if (pf->hw.func_caps.vmdq) {
7696                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7697                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7698                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
7699         }
7700
7701 #ifdef I40E_FCOE
7702         err = i40e_init_pf_fcoe(pf);
7703         if (err)
7704                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7705
7706 #endif /* I40E_FCOE */
7707 #ifdef CONFIG_PCI_IOV
7708         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7709                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7710                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7711                 pf->num_req_vfs = min_t(int,
7712                                         pf->hw.func_caps.num_vfs,
7713                                         I40E_MAX_VF_COUNT);
7714         }
7715 #endif /* CONFIG_PCI_IOV */
7716         pf->eeprom_version = 0xDEAD;
7717         pf->lan_veb = I40E_NO_VEB;
7718         pf->lan_vsi = I40E_NO_VSI;
7719
7720         /* set up queue assignment tracking */
7721         size = sizeof(struct i40e_lump_tracking)
7722                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7723         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7724         if (!pf->qp_pile) {
7725                 err = -ENOMEM;
7726                 goto sw_init_done;
7727         }
7728         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7729         pf->qp_pile->search_hint = 0;
7730
7731         pf->tx_timeout_recovery_level = 1;
7732
7733         mutex_init(&pf->switch_mutex);
7734
7735         /* If NPAR is enabled nudge the Tx scheduler */
7736         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
7737                 i40e_set_npar_bw_setting(pf);
7738
7739 sw_init_done:
7740         return err;
7741 }
7742
7743 /**
7744  * i40e_set_ntuple - set the ntuple feature flag and take action
7745  * @pf: board private structure to initialize
7746  * @features: the feature set that the stack is suggesting
7747  *
7748  * returns a bool to indicate if reset needs to happen
7749  **/
7750 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7751 {
7752         bool need_reset = false;
7753
7754         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7755          * the state changed, we need to reset.
7756          */
7757         if (features & NETIF_F_NTUPLE) {
7758                 /* Enable filters and mark for reset */
7759                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7760                         need_reset = true;
7761                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7762         } else {
7763                 /* turn off filters, mark for reset and clear SW filter list */
7764                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7765                         need_reset = true;
7766                         i40e_fdir_filter_exit(pf);
7767                 }
7768                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7769                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7770                 /* reset fd counters */
7771                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7772                 pf->fdir_pf_active_filters = 0;
7773                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7774                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7775                 /* if ATR was auto disabled it can be re-enabled. */
7776                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
7777                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
7778                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
7779         }
7780         return need_reset;
7781 }
7782
7783 /**
7784  * i40e_set_features - set the netdev feature flags
7785  * @netdev: ptr to the netdev being adjusted
7786  * @features: the feature set that the stack is suggesting
7787  **/
7788 static int i40e_set_features(struct net_device *netdev,
7789                              netdev_features_t features)
7790 {
7791         struct i40e_netdev_priv *np = netdev_priv(netdev);
7792         struct i40e_vsi *vsi = np->vsi;
7793         struct i40e_pf *pf = vsi->back;
7794         bool need_reset;
7795
7796         if (features & NETIF_F_HW_VLAN_CTAG_RX)
7797                 i40e_vlan_stripping_enable(vsi);
7798         else
7799                 i40e_vlan_stripping_disable(vsi);
7800
7801         need_reset = i40e_set_ntuple(pf, features);
7802
7803         if (need_reset)
7804                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7805
7806         return 0;
7807 }
7808
7809 #ifdef CONFIG_I40E_VXLAN
7810 /**
7811  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
7812  * @pf: board private structure
7813  * @port: The UDP port to look up
7814  *
7815  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
7816  **/
7817 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
7818 {
7819         u8 i;
7820
7821         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7822                 if (pf->vxlan_ports[i] == port)
7823                         return i;
7824         }
7825
7826         return i;
7827 }
7828
7829 /**
7830  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
7831  * @netdev: This physical port's netdev
7832  * @sa_family: Socket Family that VXLAN is notifying us about
7833  * @port: New UDP port number that VXLAN started listening to
7834  **/
7835 static void i40e_add_vxlan_port(struct net_device *netdev,
7836                                 sa_family_t sa_family, __be16 port)
7837 {
7838         struct i40e_netdev_priv *np = netdev_priv(netdev);
7839         struct i40e_vsi *vsi = np->vsi;
7840         struct i40e_pf *pf = vsi->back;
7841         u8 next_idx;
7842         u8 idx;
7843
7844         if (sa_family == AF_INET6)
7845                 return;
7846
7847         idx = i40e_get_vxlan_port_idx(pf, port);
7848
7849         /* Check if port already exists */
7850         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7851                 netdev_info(netdev, "vxlan port %d already offloaded\n",
7852                             ntohs(port));
7853                 return;
7854         }
7855
7856         /* Now check if there is space to add the new port */
7857         next_idx = i40e_get_vxlan_port_idx(pf, 0);
7858
7859         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7860                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
7861                             ntohs(port));
7862                 return;
7863         }
7864
7865         /* New port: add it and mark its index in the bitmap */
7866         pf->vxlan_ports[next_idx] = port;
7867         pf->pending_vxlan_bitmap |= (1 << next_idx);
7868         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7869
7870         dev_info(&pf->pdev->dev, "adding vxlan port %d\n", ntohs(port));
7871 }
7872
7873 /**
7874  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
7875  * @netdev: This physical port's netdev
7876  * @sa_family: Socket Family that VXLAN is notifying us about
7877  * @port: UDP port number that VXLAN stopped listening to
7878  **/
7879 static void i40e_del_vxlan_port(struct net_device *netdev,
7880                                 sa_family_t sa_family, __be16 port)
7881 {
7882         struct i40e_netdev_priv *np = netdev_priv(netdev);
7883         struct i40e_vsi *vsi = np->vsi;
7884         struct i40e_pf *pf = vsi->back;
7885         u8 idx;
7886
7887         if (sa_family == AF_INET6)
7888                 return;
7889
7890         idx = i40e_get_vxlan_port_idx(pf, port);
7891
7892         /* Check if port already exists */
7893         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7894                 /* if port exists, set it to 0 (mark for deletion)
7895                  * and make it pending
7896                  */
7897                 pf->vxlan_ports[idx] = 0;
7898                 pf->pending_vxlan_bitmap |= (1 << idx);
7899                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7900
7901                 dev_info(&pf->pdev->dev, "deleting vxlan port %d\n",
7902                          ntohs(port));
7903         } else {
7904                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
7905                             ntohs(port));
7906         }
7907 }
7908
7909 #endif
7910 static int i40e_get_phys_port_id(struct net_device *netdev,
7911                                  struct netdev_phys_item_id *ppid)
7912 {
7913         struct i40e_netdev_priv *np = netdev_priv(netdev);
7914         struct i40e_pf *pf = np->vsi->back;
7915         struct i40e_hw *hw = &pf->hw;
7916
7917         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
7918                 return -EOPNOTSUPP;
7919
7920         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
7921         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
7922
7923         return 0;
7924 }
7925
7926 /**
7927  * i40e_ndo_fdb_add - add an entry to the hardware database
7928  * @ndm: the input from the stack
7929  * @tb: pointer to array of nladdr (unused)
7930  * @dev: the net device pointer
7931  * @addr: the MAC address entry being added
7932  * @flags: instructions from stack about fdb operation
7933  */
7934 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
7935                             struct net_device *dev,
7936                             const unsigned char *addr, u16 vid,
7937                             u16 flags)
7938 {
7939         struct i40e_netdev_priv *np = netdev_priv(dev);
7940         struct i40e_pf *pf = np->vsi->back;
7941         int err = 0;
7942
7943         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
7944                 return -EOPNOTSUPP;
7945
7946         if (vid) {
7947                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
7948                 return -EINVAL;
7949         }
7950
7951         /* Hardware does not support aging addresses so if a
7952          * ndm_state is given only allow permanent addresses
7953          */
7954         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
7955                 netdev_info(dev, "FDB only supports static addresses\n");
7956                 return -EINVAL;
7957         }
7958
7959         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
7960                 err = dev_uc_add_excl(dev, addr);
7961         else if (is_multicast_ether_addr(addr))
7962                 err = dev_mc_add_excl(dev, addr);
7963         else
7964                 err = -EINVAL;
7965
7966         /* Only return duplicate errors if NLM_F_EXCL is set */
7967         if (err == -EEXIST && !(flags & NLM_F_EXCL))
7968                 err = 0;
7969
7970         return err;
7971 }
7972
7973 #ifdef HAVE_BRIDGE_ATTRIBS
7974 /**
7975  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
7976  * @dev: the netdev being configured
7977  * @nlh: RTNL message
7978  *
7979  * Inserts a new hardware bridge if not already created and
7980  * enables the bridging mode requested (VEB or VEPA). If the
7981  * hardware bridge has already been inserted and the request
7982  * is to change the mode then that requires a PF reset to
7983  * allow rebuild of the components with required hardware
7984  * bridge mode enabled.
7985  **/
7986 static int i40e_ndo_bridge_setlink(struct net_device *dev,
7987                                    struct nlmsghdr *nlh)
7988 {
7989         struct i40e_netdev_priv *np = netdev_priv(dev);
7990         struct i40e_vsi *vsi = np->vsi;
7991         struct i40e_pf *pf = vsi->back;
7992         struct i40e_veb *veb = NULL;
7993         struct nlattr *attr, *br_spec;
7994         int i, rem;
7995
7996         /* Only for PF VSI for now */
7997         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
7998                 return -EOPNOTSUPP;
7999
8000         /* Find the HW bridge for PF VSI */
8001         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8002                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8003                         veb = pf->veb[i];
8004         }
8005
8006         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8007
8008         nla_for_each_nested(attr, br_spec, rem) {
8009                 __u16 mode;
8010
8011                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8012                         continue;
8013
8014                 mode = nla_get_u16(attr);
8015                 if ((mode != BRIDGE_MODE_VEPA) &&
8016                     (mode != BRIDGE_MODE_VEB))
8017                         return -EINVAL;
8018
8019                 /* Insert a new HW bridge */
8020                 if (!veb) {
8021                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8022                                              vsi->tc_config.enabled_tc);
8023                         if (veb) {
8024                                 veb->bridge_mode = mode;
8025                                 i40e_config_bridge_mode(veb);
8026                         } else {
8027                                 /* No Bridge HW offload available */
8028                                 return -ENOENT;
8029                         }
8030                         break;
8031                 } else if (mode != veb->bridge_mode) {
8032                         /* Existing HW bridge but different mode needs reset */
8033                         veb->bridge_mode = mode;
8034                         i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
8035                         break;
8036                 }
8037         }
8038
8039         return 0;
8040 }
8041
8042 /**
8043  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8044  * @skb: skb buff
8045  * @pid: process id
8046  * @seq: RTNL message seq #
8047  * @dev: the netdev being configured
8048  * @filter_mask: unused
8049  *
8050  * Return the mode in which the hardware bridge is operating in
8051  * i.e VEB or VEPA.
8052  **/
8053 #ifdef HAVE_BRIDGE_FILTER
8054 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8055                                    struct net_device *dev,
8056                                    u32 __always_unused filter_mask, int nlflags)
8057 #else
8058 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8059                                    struct net_device *dev, int nlflags)
8060 #endif /* HAVE_BRIDGE_FILTER */
8061 {
8062         struct i40e_netdev_priv *np = netdev_priv(dev);
8063         struct i40e_vsi *vsi = np->vsi;
8064         struct i40e_pf *pf = vsi->back;
8065         struct i40e_veb *veb = NULL;
8066         int i;
8067
8068         /* Only for PF VSI for now */
8069         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8070                 return -EOPNOTSUPP;
8071
8072         /* Find the HW bridge for the PF VSI */
8073         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8074                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8075                         veb = pf->veb[i];
8076         }
8077
8078         if (!veb)
8079                 return 0;
8080
8081         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8082                                        nlflags);
8083 }
8084 #endif /* HAVE_BRIDGE_ATTRIBS */
8085
8086 static const struct net_device_ops i40e_netdev_ops = {
8087         .ndo_open               = i40e_open,
8088         .ndo_stop               = i40e_close,
8089         .ndo_start_xmit         = i40e_lan_xmit_frame,
8090         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8091         .ndo_set_rx_mode        = i40e_set_rx_mode,
8092         .ndo_validate_addr      = eth_validate_addr,
8093         .ndo_set_mac_address    = i40e_set_mac,
8094         .ndo_change_mtu         = i40e_change_mtu,
8095         .ndo_do_ioctl           = i40e_ioctl,
8096         .ndo_tx_timeout         = i40e_tx_timeout,
8097         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8098         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8099 #ifdef CONFIG_NET_POLL_CONTROLLER
8100         .ndo_poll_controller    = i40e_netpoll,
8101 #endif
8102         .ndo_setup_tc           = i40e_setup_tc,
8103 #ifdef I40E_FCOE
8104         .ndo_fcoe_enable        = i40e_fcoe_enable,
8105         .ndo_fcoe_disable       = i40e_fcoe_disable,
8106 #endif
8107         .ndo_set_features       = i40e_set_features,
8108         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8109         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8110         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8111         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8112         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8113         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8114 #ifdef CONFIG_I40E_VXLAN
8115         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8116         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8117 #endif
8118         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8119         .ndo_fdb_add            = i40e_ndo_fdb_add,
8120 #ifdef HAVE_BRIDGE_ATTRIBS
8121         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8122         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8123 #endif /* HAVE_BRIDGE_ATTRIBS */
8124 };
8125
8126 /**
8127  * i40e_config_netdev - Setup the netdev flags
8128  * @vsi: the VSI being configured
8129  *
8130  * Returns 0 on success, negative value on failure
8131  **/
8132 static int i40e_config_netdev(struct i40e_vsi *vsi)
8133 {
8134         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8135         struct i40e_pf *pf = vsi->back;
8136         struct i40e_hw *hw = &pf->hw;
8137         struct i40e_netdev_priv *np;
8138         struct net_device *netdev;
8139         u8 mac_addr[ETH_ALEN];
8140         int etherdev_size;
8141
8142         etherdev_size = sizeof(struct i40e_netdev_priv);
8143         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8144         if (!netdev)
8145                 return -ENOMEM;
8146
8147         vsi->netdev = netdev;
8148         np = netdev_priv(netdev);
8149         np->vsi = vsi;
8150
8151         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8152                                   NETIF_F_GSO_UDP_TUNNEL |
8153                                   NETIF_F_TSO;
8154
8155         netdev->features = NETIF_F_SG                  |
8156                            NETIF_F_IP_CSUM             |
8157                            NETIF_F_SCTP_CSUM           |
8158                            NETIF_F_HIGHDMA             |
8159                            NETIF_F_GSO_UDP_TUNNEL      |
8160                            NETIF_F_HW_VLAN_CTAG_TX     |
8161                            NETIF_F_HW_VLAN_CTAG_RX     |
8162                            NETIF_F_HW_VLAN_CTAG_FILTER |
8163                            NETIF_F_IPV6_CSUM           |
8164                            NETIF_F_TSO                 |
8165                            NETIF_F_TSO_ECN             |
8166                            NETIF_F_TSO6                |
8167                            NETIF_F_RXCSUM              |
8168                            NETIF_F_RXHASH              |
8169                            0;
8170
8171         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8172                 netdev->features |= NETIF_F_NTUPLE;
8173
8174         /* copy netdev features into list of user selectable features */
8175         netdev->hw_features |= netdev->features;
8176
8177         if (vsi->type == I40E_VSI_MAIN) {
8178                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8179                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8180                 /* The following steps are necessary to prevent reception
8181                  * of tagged packets - some older NVM configurations load a
8182                  * default a MAC-VLAN filter that accepts any tagged packet
8183                  * which must be replaced by a normal filter.
8184                  */
8185                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
8186                         i40e_add_filter(vsi, mac_addr,
8187                                         I40E_VLAN_ANY, false, true);
8188         } else {
8189                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8190                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8191                          pf->vsi[pf->lan_vsi]->netdev->name);
8192                 random_ether_addr(mac_addr);
8193                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8194         }
8195         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8196
8197         ether_addr_copy(netdev->dev_addr, mac_addr);
8198         ether_addr_copy(netdev->perm_addr, mac_addr);
8199         /* vlan gets same features (except vlan offload)
8200          * after any tweaks for specific VSI types
8201          */
8202         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8203                                                      NETIF_F_HW_VLAN_CTAG_RX |
8204                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8205         netdev->priv_flags |= IFF_UNICAST_FLT;
8206         netdev->priv_flags |= IFF_SUPP_NOFCS;
8207         /* Setup netdev TC information */
8208         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8209
8210         netdev->netdev_ops = &i40e_netdev_ops;
8211         netdev->watchdog_timeo = 5 * HZ;
8212         i40e_set_ethtool_ops(netdev);
8213 #ifdef I40E_FCOE
8214         i40e_fcoe_config_netdev(netdev, vsi);
8215 #endif
8216
8217         return 0;
8218 }
8219
8220 /**
8221  * i40e_vsi_delete - Delete a VSI from the switch
8222  * @vsi: the VSI being removed
8223  *
8224  * Returns 0 on success, negative value on failure
8225  **/
8226 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8227 {
8228         /* remove default VSI is not allowed */
8229         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8230                 return;
8231
8232         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8233 }
8234
8235 /**
8236  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8237  * @vsi: the VSI being queried
8238  *
8239  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8240  **/
8241 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8242 {
8243         struct i40e_veb *veb;
8244         struct i40e_pf *pf = vsi->back;
8245
8246         /* Uplink is not a bridge so default to VEB */
8247         if (vsi->veb_idx == I40E_NO_VEB)
8248                 return 1;
8249
8250         veb = pf->veb[vsi->veb_idx];
8251         /* Uplink is a bridge in VEPA mode */
8252         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8253                 return 0;
8254
8255         /* Uplink is a bridge in VEB mode */
8256         return 1;
8257 }
8258
8259 /**
8260  * i40e_add_vsi - Add a VSI to the switch
8261  * @vsi: the VSI being configured
8262  *
8263  * This initializes a VSI context depending on the VSI type to be added and
8264  * passes it down to the add_vsi aq command.
8265  **/
8266 static int i40e_add_vsi(struct i40e_vsi *vsi)
8267 {
8268         int ret = -ENODEV;
8269         struct i40e_mac_filter *f, *ftmp;
8270         struct i40e_pf *pf = vsi->back;
8271         struct i40e_hw *hw = &pf->hw;
8272         struct i40e_vsi_context ctxt;
8273         u8 enabled_tc = 0x1; /* TC0 enabled */
8274         int f_count = 0;
8275
8276         memset(&ctxt, 0, sizeof(ctxt));
8277         switch (vsi->type) {
8278         case I40E_VSI_MAIN:
8279                 /* The PF's main VSI is already setup as part of the
8280                  * device initialization, so we'll not bother with
8281                  * the add_vsi call, but we will retrieve the current
8282                  * VSI context.
8283                  */
8284                 ctxt.seid = pf->main_vsi_seid;
8285                 ctxt.pf_num = pf->hw.pf_id;
8286                 ctxt.vf_num = 0;
8287                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8288                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8289                 if (ret) {
8290                         dev_info(&pf->pdev->dev,
8291                                  "couldn't get PF vsi config, err %d, aq_err %d\n",
8292                                  ret, pf->hw.aq.asq_last_status);
8293                         return -ENOENT;
8294                 }
8295                 vsi->info = ctxt.info;
8296                 vsi->info.valid_sections = 0;
8297
8298                 vsi->seid = ctxt.seid;
8299                 vsi->id = ctxt.vsi_number;
8300
8301                 enabled_tc = i40e_pf_get_tc_map(pf);
8302
8303                 /* MFP mode setup queue map and update VSI */
8304                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8305                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8306                         memset(&ctxt, 0, sizeof(ctxt));
8307                         ctxt.seid = pf->main_vsi_seid;
8308                         ctxt.pf_num = pf->hw.pf_id;
8309                         ctxt.vf_num = 0;
8310                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8311                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8312                         if (ret) {
8313                                 dev_info(&pf->pdev->dev,
8314                                          "update vsi failed, aq_err=%d\n",
8315                                          pf->hw.aq.asq_last_status);
8316                                 ret = -ENOENT;
8317                                 goto err;
8318                         }
8319                         /* update the local VSI info queue map */
8320                         i40e_vsi_update_queue_map(vsi, &ctxt);
8321                         vsi->info.valid_sections = 0;
8322                 } else {
8323                         /* Default/Main VSI is only enabled for TC0
8324                          * reconfigure it to enable all TCs that are
8325                          * available on the port in SFP mode.
8326                          * For MFP case the iSCSI PF would use this
8327                          * flow to enable LAN+iSCSI TC.
8328                          */
8329                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8330                         if (ret) {
8331                                 dev_info(&pf->pdev->dev,
8332                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
8333                                          enabled_tc, ret,
8334                                          pf->hw.aq.asq_last_status);
8335                                 ret = -ENOENT;
8336                         }
8337                 }
8338                 break;
8339
8340         case I40E_VSI_FDIR:
8341                 ctxt.pf_num = hw->pf_id;
8342                 ctxt.vf_num = 0;
8343                 ctxt.uplink_seid = vsi->uplink_seid;
8344                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8345                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8346                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8347                         ctxt.info.valid_sections |=
8348                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8349                         ctxt.info.switch_id =
8350                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8351                 }
8352                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8353                 break;
8354
8355         case I40E_VSI_VMDQ2:
8356                 ctxt.pf_num = hw->pf_id;
8357                 ctxt.vf_num = 0;
8358                 ctxt.uplink_seid = vsi->uplink_seid;
8359                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8360                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8361
8362                 /* This VSI is connected to VEB so the switch_id
8363                  * should be set to zero by default.
8364                  */
8365                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8366                         ctxt.info.valid_sections |=
8367                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8368                         ctxt.info.switch_id =
8369                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8370                 }
8371
8372                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8373                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8374                 break;
8375
8376         case I40E_VSI_SRIOV:
8377                 ctxt.pf_num = hw->pf_id;
8378                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8379                 ctxt.uplink_seid = vsi->uplink_seid;
8380                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8381                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8382
8383                 /* This VSI is connected to VEB so the switch_id
8384                  * should be set to zero by default.
8385                  */
8386                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8387                         ctxt.info.valid_sections |=
8388                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8389                         ctxt.info.switch_id =
8390                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8391                 }
8392
8393                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8394                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8395                 if (pf->vf[vsi->vf_id].spoofchk) {
8396                         ctxt.info.valid_sections |=
8397                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8398                         ctxt.info.sec_flags |=
8399                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8400                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8401                 }
8402                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8403                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8404                 break;
8405
8406 #ifdef I40E_FCOE
8407         case I40E_VSI_FCOE:
8408                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8409                 if (ret) {
8410                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8411                         return ret;
8412                 }
8413                 break;
8414
8415 #endif /* I40E_FCOE */
8416         default:
8417                 return -ENODEV;
8418         }
8419
8420         if (vsi->type != I40E_VSI_MAIN) {
8421                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8422                 if (ret) {
8423                         dev_info(&vsi->back->pdev->dev,
8424                                  "add vsi failed, aq_err=%d\n",
8425                                  vsi->back->hw.aq.asq_last_status);
8426                         ret = -ENOENT;
8427                         goto err;
8428                 }
8429                 vsi->info = ctxt.info;
8430                 vsi->info.valid_sections = 0;
8431                 vsi->seid = ctxt.seid;
8432                 vsi->id = ctxt.vsi_number;
8433         }
8434
8435         /* If macvlan filters already exist, force them to get loaded */
8436         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8437                 f->changed = true;
8438                 f_count++;
8439
8440                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8441                         struct i40e_aqc_remove_macvlan_element_data element;
8442
8443                         memset(&element, 0, sizeof(element));
8444                         ether_addr_copy(element.mac_addr, f->macaddr);
8445                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8446                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8447                                                      &element, 1, NULL);
8448                         if (ret) {
8449                                 /* some older FW has a different default */
8450                                 element.flags |=
8451                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8452                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8453                                                        &element, 1, NULL);
8454                         }
8455
8456                         i40e_aq_mac_address_write(hw,
8457                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8458                                                   f->macaddr, NULL);
8459                 }
8460         }
8461         if (f_count) {
8462                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8463                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8464         }
8465
8466         /* Update VSI BW information */
8467         ret = i40e_vsi_get_bw_info(vsi);
8468         if (ret) {
8469                 dev_info(&pf->pdev->dev,
8470                          "couldn't get vsi bw info, err %d, aq_err %d\n",
8471                          ret, pf->hw.aq.asq_last_status);
8472                 /* VSI is already added so not tearing that up */
8473                 ret = 0;
8474         }
8475
8476 err:
8477         return ret;
8478 }
8479
8480 /**
8481  * i40e_vsi_release - Delete a VSI and free its resources
8482  * @vsi: the VSI being removed
8483  *
8484  * Returns 0 on success or < 0 on error
8485  **/
8486 int i40e_vsi_release(struct i40e_vsi *vsi)
8487 {
8488         struct i40e_mac_filter *f, *ftmp;
8489         struct i40e_veb *veb = NULL;
8490         struct i40e_pf *pf;
8491         u16 uplink_seid;
8492         int i, n;
8493
8494         pf = vsi->back;
8495
8496         /* release of a VEB-owner or last VSI is not allowed */
8497         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8498                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8499                          vsi->seid, vsi->uplink_seid);
8500                 return -ENODEV;
8501         }
8502         if (vsi == pf->vsi[pf->lan_vsi] &&
8503             !test_bit(__I40E_DOWN, &pf->state)) {
8504                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8505                 return -ENODEV;
8506         }
8507
8508         uplink_seid = vsi->uplink_seid;
8509         if (vsi->type != I40E_VSI_SRIOV) {
8510                 if (vsi->netdev_registered) {
8511                         vsi->netdev_registered = false;
8512                         if (vsi->netdev) {
8513                                 /* results in a call to i40e_close() */
8514                                 unregister_netdev(vsi->netdev);
8515                         }
8516                 } else {
8517                         i40e_vsi_close(vsi);
8518                 }
8519                 i40e_vsi_disable_irq(vsi);
8520         }
8521
8522         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8523                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8524                                 f->is_vf, f->is_netdev);
8525         i40e_sync_vsi_filters(vsi);
8526
8527         i40e_vsi_delete(vsi);
8528         i40e_vsi_free_q_vectors(vsi);
8529         if (vsi->netdev) {
8530                 free_netdev(vsi->netdev);
8531                 vsi->netdev = NULL;
8532         }
8533         i40e_vsi_clear_rings(vsi);
8534         i40e_vsi_clear(vsi);
8535
8536         /* If this was the last thing on the VEB, except for the
8537          * controlling VSI, remove the VEB, which puts the controlling
8538          * VSI onto the next level down in the switch.
8539          *
8540          * Well, okay, there's one more exception here: don't remove
8541          * the orphan VEBs yet.  We'll wait for an explicit remove request
8542          * from up the network stack.
8543          */
8544         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8545                 if (pf->vsi[i] &&
8546                     pf->vsi[i]->uplink_seid == uplink_seid &&
8547                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8548                         n++;      /* count the VSIs */
8549                 }
8550         }
8551         for (i = 0; i < I40E_MAX_VEB; i++) {
8552                 if (!pf->veb[i])
8553                         continue;
8554                 if (pf->veb[i]->uplink_seid == uplink_seid)
8555                         n++;     /* count the VEBs */
8556                 if (pf->veb[i]->seid == uplink_seid)
8557                         veb = pf->veb[i];
8558         }
8559         if (n == 0 && veb && veb->uplink_seid != 0)
8560                 i40e_veb_release(veb);
8561
8562         return 0;
8563 }
8564
8565 /**
8566  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8567  * @vsi: ptr to the VSI
8568  *
8569  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8570  * corresponding SW VSI structure and initializes num_queue_pairs for the
8571  * newly allocated VSI.
8572  *
8573  * Returns 0 on success or negative on failure
8574  **/
8575 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8576 {
8577         int ret = -ENOENT;
8578         struct i40e_pf *pf = vsi->back;
8579
8580         if (vsi->q_vectors[0]) {
8581                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8582                          vsi->seid);
8583                 return -EEXIST;
8584         }
8585
8586         if (vsi->base_vector) {
8587                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8588                          vsi->seid, vsi->base_vector);
8589                 return -EEXIST;
8590         }
8591
8592         ret = i40e_vsi_alloc_q_vectors(vsi);
8593         if (ret) {
8594                 dev_info(&pf->pdev->dev,
8595                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8596                          vsi->num_q_vectors, vsi->seid, ret);
8597                 vsi->num_q_vectors = 0;
8598                 goto vector_setup_out;
8599         }
8600
8601         if (vsi->num_q_vectors)
8602                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8603                                                  vsi->num_q_vectors, vsi->idx);
8604         if (vsi->base_vector < 0) {
8605                 dev_info(&pf->pdev->dev,
8606                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8607                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8608                 i40e_vsi_free_q_vectors(vsi);
8609                 ret = -ENOENT;
8610                 goto vector_setup_out;
8611         }
8612
8613 vector_setup_out:
8614         return ret;
8615 }
8616
8617 /**
8618  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8619  * @vsi: pointer to the vsi.
8620  *
8621  * This re-allocates a vsi's queue resources.
8622  *
8623  * Returns pointer to the successfully allocated and configured VSI sw struct
8624  * on success, otherwise returns NULL on failure.
8625  **/
8626 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8627 {
8628         struct i40e_pf *pf = vsi->back;
8629         u8 enabled_tc;
8630         int ret;
8631
8632         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8633         i40e_vsi_clear_rings(vsi);
8634
8635         i40e_vsi_free_arrays(vsi, false);
8636         i40e_set_num_rings_in_vsi(vsi);
8637         ret = i40e_vsi_alloc_arrays(vsi, false);
8638         if (ret)
8639                 goto err_vsi;
8640
8641         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8642         if (ret < 0) {
8643                 dev_info(&pf->pdev->dev,
8644                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8645                          vsi->alloc_queue_pairs, vsi->seid, ret);
8646                 goto err_vsi;
8647         }
8648         vsi->base_queue = ret;
8649
8650         /* Update the FW view of the VSI. Force a reset of TC and queue
8651          * layout configurations.
8652          */
8653         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8654         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8655         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8656         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8657
8658         /* assign it some queues */
8659         ret = i40e_alloc_rings(vsi);
8660         if (ret)
8661                 goto err_rings;
8662
8663         /* map all of the rings to the q_vectors */
8664         i40e_vsi_map_rings_to_vectors(vsi);
8665         return vsi;
8666
8667 err_rings:
8668         i40e_vsi_free_q_vectors(vsi);
8669         if (vsi->netdev_registered) {
8670                 vsi->netdev_registered = false;
8671                 unregister_netdev(vsi->netdev);
8672                 free_netdev(vsi->netdev);
8673                 vsi->netdev = NULL;
8674         }
8675         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8676 err_vsi:
8677         i40e_vsi_clear(vsi);
8678         return NULL;
8679 }
8680
8681 /**
8682  * i40e_vsi_setup - Set up a VSI by a given type
8683  * @pf: board private structure
8684  * @type: VSI type
8685  * @uplink_seid: the switch element to link to
8686  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8687  *
8688  * This allocates the sw VSI structure and its queue resources, then add a VSI
8689  * to the identified VEB.
8690  *
8691  * Returns pointer to the successfully allocated and configure VSI sw struct on
8692  * success, otherwise returns NULL on failure.
8693  **/
8694 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8695                                 u16 uplink_seid, u32 param1)
8696 {
8697         struct i40e_vsi *vsi = NULL;
8698         struct i40e_veb *veb = NULL;
8699         int ret, i;
8700         int v_idx;
8701
8702         /* The requested uplink_seid must be either
8703          *     - the PF's port seid
8704          *              no VEB is needed because this is the PF
8705          *              or this is a Flow Director special case VSI
8706          *     - seid of an existing VEB
8707          *     - seid of a VSI that owns an existing VEB
8708          *     - seid of a VSI that doesn't own a VEB
8709          *              a new VEB is created and the VSI becomes the owner
8710          *     - seid of the PF VSI, which is what creates the first VEB
8711          *              this is a special case of the previous
8712          *
8713          * Find which uplink_seid we were given and create a new VEB if needed
8714          */
8715         for (i = 0; i < I40E_MAX_VEB; i++) {
8716                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8717                         veb = pf->veb[i];
8718                         break;
8719                 }
8720         }
8721
8722         if (!veb && uplink_seid != pf->mac_seid) {
8723
8724                 for (i = 0; i < pf->num_alloc_vsi; i++) {
8725                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8726                                 vsi = pf->vsi[i];
8727                                 break;
8728                         }
8729                 }
8730                 if (!vsi) {
8731                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8732                                  uplink_seid);
8733                         return NULL;
8734                 }
8735
8736                 if (vsi->uplink_seid == pf->mac_seid)
8737                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8738                                              vsi->tc_config.enabled_tc);
8739                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8740                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8741                                              vsi->tc_config.enabled_tc);
8742                 if (veb) {
8743                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
8744                                 dev_info(&vsi->back->pdev->dev,
8745                                          "%s: New VSI creation error, uplink seid of LAN VSI expected.\n",
8746                                          __func__);
8747                                 return NULL;
8748                         }
8749                         i40e_config_bridge_mode(veb);
8750                 }
8751                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8752                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8753                                 veb = pf->veb[i];
8754                 }
8755                 if (!veb) {
8756                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
8757                         return NULL;
8758                 }
8759
8760                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8761                 uplink_seid = veb->seid;
8762         }
8763
8764         /* get vsi sw struct */
8765         v_idx = i40e_vsi_mem_alloc(pf, type);
8766         if (v_idx < 0)
8767                 goto err_alloc;
8768         vsi = pf->vsi[v_idx];
8769         if (!vsi)
8770                 goto err_alloc;
8771         vsi->type = type;
8772         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
8773
8774         if (type == I40E_VSI_MAIN)
8775                 pf->lan_vsi = v_idx;
8776         else if (type == I40E_VSI_SRIOV)
8777                 vsi->vf_id = param1;
8778         /* assign it some queues */
8779         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
8780                                 vsi->idx);
8781         if (ret < 0) {
8782                 dev_info(&pf->pdev->dev,
8783                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8784                          vsi->alloc_queue_pairs, vsi->seid, ret);
8785                 goto err_vsi;
8786         }
8787         vsi->base_queue = ret;
8788
8789         /* get a VSI from the hardware */
8790         vsi->uplink_seid = uplink_seid;
8791         ret = i40e_add_vsi(vsi);
8792         if (ret)
8793                 goto err_vsi;
8794
8795         switch (vsi->type) {
8796         /* setup the netdev if needed */
8797         case I40E_VSI_MAIN:
8798         case I40E_VSI_VMDQ2:
8799         case I40E_VSI_FCOE:
8800                 ret = i40e_config_netdev(vsi);
8801                 if (ret)
8802                         goto err_netdev;
8803                 ret = register_netdev(vsi->netdev);
8804                 if (ret)
8805                         goto err_netdev;
8806                 vsi->netdev_registered = true;
8807                 netif_carrier_off(vsi->netdev);
8808 #ifdef CONFIG_I40E_DCB
8809                 /* Setup DCB netlink interface */
8810                 i40e_dcbnl_setup(vsi);
8811 #endif /* CONFIG_I40E_DCB */
8812                 /* fall through */
8813
8814         case I40E_VSI_FDIR:
8815                 /* set up vectors and rings if needed */
8816                 ret = i40e_vsi_setup_vectors(vsi);
8817                 if (ret)
8818                         goto err_msix;
8819
8820                 ret = i40e_alloc_rings(vsi);
8821                 if (ret)
8822                         goto err_rings;
8823
8824                 /* map all of the rings to the q_vectors */
8825                 i40e_vsi_map_rings_to_vectors(vsi);
8826
8827                 i40e_vsi_reset_stats(vsi);
8828                 break;
8829
8830         default:
8831                 /* no netdev or rings for the other VSI types */
8832                 break;
8833         }
8834
8835         return vsi;
8836
8837 err_rings:
8838         i40e_vsi_free_q_vectors(vsi);
8839 err_msix:
8840         if (vsi->netdev_registered) {
8841                 vsi->netdev_registered = false;
8842                 unregister_netdev(vsi->netdev);
8843                 free_netdev(vsi->netdev);
8844                 vsi->netdev = NULL;
8845         }
8846 err_netdev:
8847         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8848 err_vsi:
8849         i40e_vsi_clear(vsi);
8850 err_alloc:
8851         return NULL;
8852 }
8853
8854 /**
8855  * i40e_veb_get_bw_info - Query VEB BW information
8856  * @veb: the veb to query
8857  *
8858  * Query the Tx scheduler BW configuration data for given VEB
8859  **/
8860 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
8861 {
8862         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
8863         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
8864         struct i40e_pf *pf = veb->pf;
8865         struct i40e_hw *hw = &pf->hw;
8866         u32 tc_bw_max;
8867         int ret = 0;
8868         int i;
8869
8870         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
8871                                                   &bw_data, NULL);
8872         if (ret) {
8873                 dev_info(&pf->pdev->dev,
8874                          "query veb bw config failed, aq_err=%d\n",
8875                          hw->aq.asq_last_status);
8876                 goto out;
8877         }
8878
8879         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
8880                                                    &ets_data, NULL);
8881         if (ret) {
8882                 dev_info(&pf->pdev->dev,
8883                          "query veb bw ets config failed, aq_err=%d\n",
8884                          hw->aq.asq_last_status);
8885                 goto out;
8886         }
8887
8888         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
8889         veb->bw_max_quanta = ets_data.tc_bw_max;
8890         veb->is_abs_credits = bw_data.absolute_credits_enable;
8891         veb->enabled_tc = ets_data.tc_valid_bits;
8892         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
8893                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
8894         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
8895                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
8896                 veb->bw_tc_limit_credits[i] =
8897                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
8898                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
8899         }
8900
8901 out:
8902         return ret;
8903 }
8904
8905 /**
8906  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
8907  * @pf: board private structure
8908  *
8909  * On error: returns error code (negative)
8910  * On success: returns vsi index in PF (positive)
8911  **/
8912 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
8913 {
8914         int ret = -ENOENT;
8915         struct i40e_veb *veb;
8916         int i;
8917
8918         /* Need to protect the allocation of switch elements at the PF level */
8919         mutex_lock(&pf->switch_mutex);
8920
8921         /* VEB list may be fragmented if VEB creation/destruction has
8922          * been happening.  We can afford to do a quick scan to look
8923          * for any free slots in the list.
8924          *
8925          * find next empty veb slot, looping back around if necessary
8926          */
8927         i = 0;
8928         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
8929                 i++;
8930         if (i >= I40E_MAX_VEB) {
8931                 ret = -ENOMEM;
8932                 goto err_alloc_veb;  /* out of VEB slots! */
8933         }
8934
8935         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
8936         if (!veb) {
8937                 ret = -ENOMEM;
8938                 goto err_alloc_veb;
8939         }
8940         veb->pf = pf;
8941         veb->idx = i;
8942         veb->enabled_tc = 1;
8943
8944         pf->veb[i] = veb;
8945         ret = i;
8946 err_alloc_veb:
8947         mutex_unlock(&pf->switch_mutex);
8948         return ret;
8949 }
8950
8951 /**
8952  * i40e_switch_branch_release - Delete a branch of the switch tree
8953  * @branch: where to start deleting
8954  *
8955  * This uses recursion to find the tips of the branch to be
8956  * removed, deleting until we get back to and can delete this VEB.
8957  **/
8958 static void i40e_switch_branch_release(struct i40e_veb *branch)
8959 {
8960         struct i40e_pf *pf = branch->pf;
8961         u16 branch_seid = branch->seid;
8962         u16 veb_idx = branch->idx;
8963         int i;
8964
8965         /* release any VEBs on this VEB - RECURSION */
8966         for (i = 0; i < I40E_MAX_VEB; i++) {
8967                 if (!pf->veb[i])
8968                         continue;
8969                 if (pf->veb[i]->uplink_seid == branch->seid)
8970                         i40e_switch_branch_release(pf->veb[i]);
8971         }
8972
8973         /* Release the VSIs on this VEB, but not the owner VSI.
8974          *
8975          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
8976          *       the VEB itself, so don't use (*branch) after this loop.
8977          */
8978         for (i = 0; i < pf->num_alloc_vsi; i++) {
8979                 if (!pf->vsi[i])
8980                         continue;
8981                 if (pf->vsi[i]->uplink_seid == branch_seid &&
8982                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8983                         i40e_vsi_release(pf->vsi[i]);
8984                 }
8985         }
8986
8987         /* There's one corner case where the VEB might not have been
8988          * removed, so double check it here and remove it if needed.
8989          * This case happens if the veb was created from the debugfs
8990          * commands and no VSIs were added to it.
8991          */
8992         if (pf->veb[veb_idx])
8993                 i40e_veb_release(pf->veb[veb_idx]);
8994 }
8995
8996 /**
8997  * i40e_veb_clear - remove veb struct
8998  * @veb: the veb to remove
8999  **/
9000 static void i40e_veb_clear(struct i40e_veb *veb)
9001 {
9002         if (!veb)
9003                 return;
9004
9005         if (veb->pf) {
9006                 struct i40e_pf *pf = veb->pf;
9007
9008                 mutex_lock(&pf->switch_mutex);
9009                 if (pf->veb[veb->idx] == veb)
9010                         pf->veb[veb->idx] = NULL;
9011                 mutex_unlock(&pf->switch_mutex);
9012         }
9013
9014         kfree(veb);
9015 }
9016
9017 /**
9018  * i40e_veb_release - Delete a VEB and free its resources
9019  * @veb: the VEB being removed
9020  **/
9021 void i40e_veb_release(struct i40e_veb *veb)
9022 {
9023         struct i40e_vsi *vsi = NULL;
9024         struct i40e_pf *pf;
9025         int i, n = 0;
9026
9027         pf = veb->pf;
9028
9029         /* find the remaining VSI and check for extras */
9030         for (i = 0; i < pf->num_alloc_vsi; i++) {
9031                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9032                         n++;
9033                         vsi = pf->vsi[i];
9034                 }
9035         }
9036         if (n != 1) {
9037                 dev_info(&pf->pdev->dev,
9038                          "can't remove VEB %d with %d VSIs left\n",
9039                          veb->seid, n);
9040                 return;
9041         }
9042
9043         /* move the remaining VSI to uplink veb */
9044         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9045         if (veb->uplink_seid) {
9046                 vsi->uplink_seid = veb->uplink_seid;
9047                 if (veb->uplink_seid == pf->mac_seid)
9048                         vsi->veb_idx = I40E_NO_VEB;
9049                 else
9050                         vsi->veb_idx = veb->veb_idx;
9051         } else {
9052                 /* floating VEB */
9053                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9054                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9055         }
9056
9057         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9058         i40e_veb_clear(veb);
9059 }
9060
9061 /**
9062  * i40e_add_veb - create the VEB in the switch
9063  * @veb: the VEB to be instantiated
9064  * @vsi: the controlling VSI
9065  **/
9066 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9067 {
9068         bool is_default = false;
9069         bool is_cloud = false;
9070         int ret;
9071
9072         /* get a VEB from the hardware */
9073         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
9074                               veb->enabled_tc, is_default,
9075                               is_cloud, &veb->seid, NULL);
9076         if (ret) {
9077                 dev_info(&veb->pf->pdev->dev,
9078                          "couldn't add VEB, err %d, aq_err %d\n",
9079                          ret, veb->pf->hw.aq.asq_last_status);
9080                 return -EPERM;
9081         }
9082
9083         /* get statistics counter */
9084         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
9085                                          &veb->stats_idx, NULL, NULL, NULL);
9086         if (ret) {
9087                 dev_info(&veb->pf->pdev->dev,
9088                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
9089                          ret, veb->pf->hw.aq.asq_last_status);
9090                 return -EPERM;
9091         }
9092         ret = i40e_veb_get_bw_info(veb);
9093         if (ret) {
9094                 dev_info(&veb->pf->pdev->dev,
9095                          "couldn't get VEB bw info, err %d, aq_err %d\n",
9096                          ret, veb->pf->hw.aq.asq_last_status);
9097                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
9098                 return -ENOENT;
9099         }
9100
9101         vsi->uplink_seid = veb->seid;
9102         vsi->veb_idx = veb->idx;
9103         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9104
9105         return 0;
9106 }
9107
9108 /**
9109  * i40e_veb_setup - Set up a VEB
9110  * @pf: board private structure
9111  * @flags: VEB setup flags
9112  * @uplink_seid: the switch element to link to
9113  * @vsi_seid: the initial VSI seid
9114  * @enabled_tc: Enabled TC bit-map
9115  *
9116  * This allocates the sw VEB structure and links it into the switch
9117  * It is possible and legal for this to be a duplicate of an already
9118  * existing VEB.  It is also possible for both uplink and vsi seids
9119  * to be zero, in order to create a floating VEB.
9120  *
9121  * Returns pointer to the successfully allocated VEB sw struct on
9122  * success, otherwise returns NULL on failure.
9123  **/
9124 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9125                                 u16 uplink_seid, u16 vsi_seid,
9126                                 u8 enabled_tc)
9127 {
9128         struct i40e_veb *veb, *uplink_veb = NULL;
9129         int vsi_idx, veb_idx;
9130         int ret;
9131
9132         /* if one seid is 0, the other must be 0 to create a floating relay */
9133         if ((uplink_seid == 0 || vsi_seid == 0) &&
9134             (uplink_seid + vsi_seid != 0)) {
9135                 dev_info(&pf->pdev->dev,
9136                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9137                          uplink_seid, vsi_seid);
9138                 return NULL;
9139         }
9140
9141         /* make sure there is such a vsi and uplink */
9142         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9143                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9144                         break;
9145         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9146                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9147                          vsi_seid);
9148                 return NULL;
9149         }
9150
9151         if (uplink_seid && uplink_seid != pf->mac_seid) {
9152                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9153                         if (pf->veb[veb_idx] &&
9154                             pf->veb[veb_idx]->seid == uplink_seid) {
9155                                 uplink_veb = pf->veb[veb_idx];
9156                                 break;
9157                         }
9158                 }
9159                 if (!uplink_veb) {
9160                         dev_info(&pf->pdev->dev,
9161                                  "uplink seid %d not found\n", uplink_seid);
9162                         return NULL;
9163                 }
9164         }
9165
9166         /* get veb sw struct */
9167         veb_idx = i40e_veb_mem_alloc(pf);
9168         if (veb_idx < 0)
9169                 goto err_alloc;
9170         veb = pf->veb[veb_idx];
9171         veb->flags = flags;
9172         veb->uplink_seid = uplink_seid;
9173         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9174         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9175
9176         /* create the VEB in the switch */
9177         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9178         if (ret)
9179                 goto err_veb;
9180         if (vsi_idx == pf->lan_vsi)
9181                 pf->lan_veb = veb->idx;
9182
9183         return veb;
9184
9185 err_veb:
9186         i40e_veb_clear(veb);
9187 err_alloc:
9188         return NULL;
9189 }
9190
9191 /**
9192  * i40e_setup_pf_switch_element - set PF vars based on switch type
9193  * @pf: board private structure
9194  * @ele: element we are building info from
9195  * @num_reported: total number of elements
9196  * @printconfig: should we print the contents
9197  *
9198  * helper function to assist in extracting a few useful SEID values.
9199  **/
9200 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9201                                 struct i40e_aqc_switch_config_element_resp *ele,
9202                                 u16 num_reported, bool printconfig)
9203 {
9204         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9205         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9206         u8 element_type = ele->element_type;
9207         u16 seid = le16_to_cpu(ele->seid);
9208
9209         if (printconfig)
9210                 dev_info(&pf->pdev->dev,
9211                          "type=%d seid=%d uplink=%d downlink=%d\n",
9212                          element_type, seid, uplink_seid, downlink_seid);
9213
9214         switch (element_type) {
9215         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9216                 pf->mac_seid = seid;
9217                 break;
9218         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9219                 /* Main VEB? */
9220                 if (uplink_seid != pf->mac_seid)
9221                         break;
9222                 if (pf->lan_veb == I40E_NO_VEB) {
9223                         int v;
9224
9225                         /* find existing or else empty VEB */
9226                         for (v = 0; v < I40E_MAX_VEB; v++) {
9227                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9228                                         pf->lan_veb = v;
9229                                         break;
9230                                 }
9231                         }
9232                         if (pf->lan_veb == I40E_NO_VEB) {
9233                                 v = i40e_veb_mem_alloc(pf);
9234                                 if (v < 0)
9235                                         break;
9236                                 pf->lan_veb = v;
9237                         }
9238                 }
9239
9240                 pf->veb[pf->lan_veb]->seid = seid;
9241                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9242                 pf->veb[pf->lan_veb]->pf = pf;
9243                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9244                 break;
9245         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9246                 if (num_reported != 1)
9247                         break;
9248                 /* This is immediately after a reset so we can assume this is
9249                  * the PF's VSI
9250                  */
9251                 pf->mac_seid = uplink_seid;
9252                 pf->pf_seid = downlink_seid;
9253                 pf->main_vsi_seid = seid;
9254                 if (printconfig)
9255                         dev_info(&pf->pdev->dev,
9256                                  "pf_seid=%d main_vsi_seid=%d\n",
9257                                  pf->pf_seid, pf->main_vsi_seid);
9258                 break;
9259         case I40E_SWITCH_ELEMENT_TYPE_PF:
9260         case I40E_SWITCH_ELEMENT_TYPE_VF:
9261         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9262         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9263         case I40E_SWITCH_ELEMENT_TYPE_PE:
9264         case I40E_SWITCH_ELEMENT_TYPE_PA:
9265                 /* ignore these for now */
9266                 break;
9267         default:
9268                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9269                          element_type, seid);
9270                 break;
9271         }
9272 }
9273
9274 /**
9275  * i40e_fetch_switch_configuration - Get switch config from firmware
9276  * @pf: board private structure
9277  * @printconfig: should we print the contents
9278  *
9279  * Get the current switch configuration from the device and
9280  * extract a few useful SEID values.
9281  **/
9282 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9283 {
9284         struct i40e_aqc_get_switch_config_resp *sw_config;
9285         u16 next_seid = 0;
9286         int ret = 0;
9287         u8 *aq_buf;
9288         int i;
9289
9290         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9291         if (!aq_buf)
9292                 return -ENOMEM;
9293
9294         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9295         do {
9296                 u16 num_reported, num_total;
9297
9298                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9299                                                 I40E_AQ_LARGE_BUF,
9300                                                 &next_seid, NULL);
9301                 if (ret) {
9302                         dev_info(&pf->pdev->dev,
9303                                  "get switch config failed %d aq_err=%x\n",
9304                                  ret, pf->hw.aq.asq_last_status);
9305                         kfree(aq_buf);
9306                         return -ENOENT;
9307                 }
9308
9309                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9310                 num_total = le16_to_cpu(sw_config->header.num_total);
9311
9312                 if (printconfig)
9313                         dev_info(&pf->pdev->dev,
9314                                  "header: %d reported %d total\n",
9315                                  num_reported, num_total);
9316
9317                 for (i = 0; i < num_reported; i++) {
9318                         struct i40e_aqc_switch_config_element_resp *ele =
9319                                 &sw_config->element[i];
9320
9321                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9322                                                      printconfig);
9323                 }
9324         } while (next_seid != 0);
9325
9326         kfree(aq_buf);
9327         return ret;
9328 }
9329
9330 /**
9331  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9332  * @pf: board private structure
9333  * @reinit: if the Main VSI needs to re-initialized.
9334  *
9335  * Returns 0 on success, negative value on failure
9336  **/
9337 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9338 {
9339         int ret;
9340
9341         /* find out what's out there already */
9342         ret = i40e_fetch_switch_configuration(pf, false);
9343         if (ret) {
9344                 dev_info(&pf->pdev->dev,
9345                          "couldn't fetch switch config, err %d, aq_err %d\n",
9346                          ret, pf->hw.aq.asq_last_status);
9347                 return ret;
9348         }
9349         i40e_pf_reset_stats(pf);
9350
9351         /* first time setup */
9352         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9353                 struct i40e_vsi *vsi = NULL;
9354                 u16 uplink_seid;
9355
9356                 /* Set up the PF VSI associated with the PF's main VSI
9357                  * that is already in the HW switch
9358                  */
9359                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9360                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9361                 else
9362                         uplink_seid = pf->mac_seid;
9363                 if (pf->lan_vsi == I40E_NO_VSI)
9364                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9365                 else if (reinit)
9366                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9367                 if (!vsi) {
9368                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9369                         i40e_fdir_teardown(pf);
9370                         return -EAGAIN;
9371                 }
9372         } else {
9373                 /* force a reset of TC and queue layout configurations */
9374                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9375                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9376                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9377                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9378         }
9379         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9380
9381         i40e_fdir_sb_setup(pf);
9382
9383         /* Setup static PF queue filter control settings */
9384         ret = i40e_setup_pf_filter_control(pf);
9385         if (ret) {
9386                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9387                          ret);
9388                 /* Failure here should not stop continuing other steps */
9389         }
9390
9391         /* enable RSS in the HW, even for only one queue, as the stack can use
9392          * the hash
9393          */
9394         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9395                 i40e_config_rss(pf);
9396
9397         /* fill in link information and enable LSE reporting */
9398         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9399         i40e_link_event(pf);
9400
9401         /* Initialize user-specific link properties */
9402         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9403                                   I40E_AQ_AN_COMPLETED) ? true : false);
9404
9405         i40e_ptp_init(pf);
9406
9407         return ret;
9408 }
9409
9410 /**
9411  * i40e_determine_queue_usage - Work out queue distribution
9412  * @pf: board private structure
9413  **/
9414 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9415 {
9416         int queues_left;
9417
9418         pf->num_lan_qps = 0;
9419 #ifdef I40E_FCOE
9420         pf->num_fcoe_qps = 0;
9421 #endif
9422
9423         /* Find the max queues to be put into basic use.  We'll always be
9424          * using TC0, whether or not DCB is running, and TC0 will get the
9425          * big RSS set.
9426          */
9427         queues_left = pf->hw.func_caps.num_tx_qp;
9428
9429         if ((queues_left == 1) ||
9430             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9431                 /* one qp for PF, no queues for anything else */
9432                 queues_left = 0;
9433                 pf->rss_size = pf->num_lan_qps = 1;
9434
9435                 /* make sure all the fancies are disabled */
9436                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9437 #ifdef I40E_FCOE
9438                                I40E_FLAG_FCOE_ENABLED   |
9439 #endif
9440                                I40E_FLAG_FD_SB_ENABLED  |
9441                                I40E_FLAG_FD_ATR_ENABLED |
9442                                I40E_FLAG_DCB_CAPABLE    |
9443                                I40E_FLAG_SRIOV_ENABLED  |
9444                                I40E_FLAG_VMDQ_ENABLED);
9445         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
9446                                   I40E_FLAG_FD_SB_ENABLED |
9447                                   I40E_FLAG_FD_ATR_ENABLED |
9448                                   I40E_FLAG_DCB_CAPABLE))) {
9449                 /* one qp for PF */
9450                 pf->rss_size = pf->num_lan_qps = 1;
9451                 queues_left -= pf->num_lan_qps;
9452
9453                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9454 #ifdef I40E_FCOE
9455                                I40E_FLAG_FCOE_ENABLED   |
9456 #endif
9457                                I40E_FLAG_FD_SB_ENABLED  |
9458                                I40E_FLAG_FD_ATR_ENABLED |
9459                                I40E_FLAG_DCB_ENABLED    |
9460                                I40E_FLAG_VMDQ_ENABLED);
9461         } else {
9462                 /* Not enough queues for all TCs */
9463                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9464                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9465                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9466                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
9467                 }
9468                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
9469                                         num_online_cpus());
9470                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
9471                                         pf->hw.func_caps.num_tx_qp);
9472
9473                 queues_left -= pf->num_lan_qps;
9474         }
9475
9476 #ifdef I40E_FCOE
9477         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
9478                 if (I40E_DEFAULT_FCOE <= queues_left) {
9479                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
9480                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
9481                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
9482                 } else {
9483                         pf->num_fcoe_qps = 0;
9484                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
9485                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9486                 }
9487
9488                 queues_left -= pf->num_fcoe_qps;
9489         }
9490
9491 #endif
9492         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9493                 if (queues_left > 1) {
9494                         queues_left -= 1; /* save 1 queue for FD */
9495                 } else {
9496                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9497                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9498                 }
9499         }
9500
9501         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9502             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9503                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9504                                         (queues_left / pf->num_vf_qps));
9505                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9506         }
9507
9508         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9509             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9510                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9511                                           (queues_left / pf->num_vmdq_qps));
9512                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9513         }
9514
9515         pf->queues_left = queues_left;
9516 #ifdef I40E_FCOE
9517         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9518 #endif
9519 }
9520
9521 /**
9522  * i40e_setup_pf_filter_control - Setup PF static filter control
9523  * @pf: PF to be setup
9524  *
9525  * i40e_setup_pf_filter_control sets up a PF's initial filter control
9526  * settings. If PE/FCoE are enabled then it will also set the per PF
9527  * based filter sizes required for them. It also enables Flow director,
9528  * ethertype and macvlan type filter settings for the pf.
9529  *
9530  * Returns 0 on success, negative on failure
9531  **/
9532 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9533 {
9534         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9535
9536         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9537
9538         /* Flow Director is enabled */
9539         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9540                 settings->enable_fdir = true;
9541
9542         /* Ethtype and MACVLAN filters enabled for PF */
9543         settings->enable_ethtype = true;
9544         settings->enable_macvlan = true;
9545
9546         if (i40e_set_filter_control(&pf->hw, settings))
9547                 return -ENOENT;
9548
9549         return 0;
9550 }
9551
9552 #define INFO_STRING_LEN 255
9553 static void i40e_print_features(struct i40e_pf *pf)
9554 {
9555         struct i40e_hw *hw = &pf->hw;
9556         char *buf, *string;
9557
9558         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9559         if (!string) {
9560                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9561                 return;
9562         }
9563
9564         buf = string;
9565
9566         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9567 #ifdef CONFIG_PCI_IOV
9568         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9569 #endif
9570         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9571                        pf->hw.func_caps.num_vsis,
9572                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9573                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9574
9575         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9576                 buf += sprintf(buf, "RSS ");
9577         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9578                 buf += sprintf(buf, "FD_ATR ");
9579         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9580                 buf += sprintf(buf, "FD_SB ");
9581                 buf += sprintf(buf, "NTUPLE ");
9582         }
9583         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9584                 buf += sprintf(buf, "DCB ");
9585         if (pf->flags & I40E_FLAG_PTP)
9586                 buf += sprintf(buf, "PTP ");
9587 #ifdef I40E_FCOE
9588         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9589                 buf += sprintf(buf, "FCOE ");
9590 #endif
9591
9592         BUG_ON(buf > (string + INFO_STRING_LEN));
9593         dev_info(&pf->pdev->dev, "%s\n", string);
9594         kfree(string);
9595 }
9596
9597 /**
9598  * i40e_probe - Device initialization routine
9599  * @pdev: PCI device information struct
9600  * @ent: entry in i40e_pci_tbl
9601  *
9602  * i40e_probe initializes a PF identified by a pci_dev structure.
9603  * The OS initialization, configuring of the PF private structure,
9604  * and a hardware reset occur.
9605  *
9606  * Returns 0 on success, negative on failure
9607  **/
9608 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9609 {
9610         struct i40e_aq_get_phy_abilities_resp abilities;
9611         unsigned long ioremap_len;
9612         struct i40e_pf *pf;
9613         struct i40e_hw *hw;
9614         static u16 pfs_found;
9615         u16 link_status;
9616         int err = 0;
9617         u32 len;
9618         u32 i;
9619
9620         err = pci_enable_device_mem(pdev);
9621         if (err)
9622                 return err;
9623
9624         /* set up for high or low dma */
9625         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9626         if (err) {
9627                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9628                 if (err) {
9629                         dev_err(&pdev->dev,
9630                                 "DMA configuration failed: 0x%x\n", err);
9631                         goto err_dma;
9632                 }
9633         }
9634
9635         /* set up pci connections */
9636         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9637                                            IORESOURCE_MEM), i40e_driver_name);
9638         if (err) {
9639                 dev_info(&pdev->dev,
9640                          "pci_request_selected_regions failed %d\n", err);
9641                 goto err_pci_reg;
9642         }
9643
9644         pci_enable_pcie_error_reporting(pdev);
9645         pci_set_master(pdev);
9646
9647         /* Now that we have a PCI connection, we need to do the
9648          * low level device setup.  This is primarily setting up
9649          * the Admin Queue structures and then querying for the
9650          * device's current profile information.
9651          */
9652         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9653         if (!pf) {
9654                 err = -ENOMEM;
9655                 goto err_pf_alloc;
9656         }
9657         pf->next_vsi = 0;
9658         pf->pdev = pdev;
9659         set_bit(__I40E_DOWN, &pf->state);
9660
9661         hw = &pf->hw;
9662         hw->back = pf;
9663
9664         ioremap_len = min_t(unsigned long, pci_resource_len(pdev, 0),
9665                             I40E_MAX_CSR_SPACE);
9666
9667         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), ioremap_len);
9668         if (!hw->hw_addr) {
9669                 err = -EIO;
9670                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9671                          (unsigned int)pci_resource_start(pdev, 0),
9672                          (unsigned int)pci_resource_len(pdev, 0), err);
9673                 goto err_ioremap;
9674         }
9675         hw->vendor_id = pdev->vendor;
9676         hw->device_id = pdev->device;
9677         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
9678         hw->subsystem_vendor_id = pdev->subsystem_vendor;
9679         hw->subsystem_device_id = pdev->subsystem_device;
9680         hw->bus.device = PCI_SLOT(pdev->devfn);
9681         hw->bus.func = PCI_FUNC(pdev->devfn);
9682         pf->instance = pfs_found;
9683
9684         if (debug != -1) {
9685                 pf->msg_enable = pf->hw.debug_mask;
9686                 pf->msg_enable = debug;
9687         }
9688
9689         /* do a special CORER for clearing PXE mode once at init */
9690         if (hw->revision_id == 0 &&
9691             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
9692                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
9693                 i40e_flush(hw);
9694                 msleep(200);
9695                 pf->corer_count++;
9696
9697                 i40e_clear_pxe_mode(hw);
9698         }
9699
9700         /* Reset here to make sure all is clean and to define PF 'n' */
9701         i40e_clear_hw(hw);
9702         err = i40e_pf_reset(hw);
9703         if (err) {
9704                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
9705                 goto err_pf_reset;
9706         }
9707         pf->pfr_count++;
9708
9709         hw->aq.num_arq_entries = I40E_AQ_LEN;
9710         hw->aq.num_asq_entries = I40E_AQ_LEN;
9711         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9712         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9713         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
9714
9715         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
9716                  "%s-%s:misc",
9717                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
9718
9719         err = i40e_init_shared_code(hw);
9720         if (err) {
9721                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
9722                 goto err_pf_reset;
9723         }
9724
9725         /* set up a default setting for link flow control */
9726         pf->hw.fc.requested_mode = I40E_FC_NONE;
9727
9728         err = i40e_init_adminq(hw);
9729         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
9730         if (err) {
9731                 dev_info(&pdev->dev,
9732                          "The driver for the device stopped because the NVM image is newer than expected. You must install the most recent version of the network driver.\n");
9733                 goto err_pf_reset;
9734         }
9735
9736         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
9737             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
9738                 dev_info(&pdev->dev,
9739                          "The driver for the device detected a newer version of the NVM image than expected. Please install the most recent version of the network driver.\n");
9740         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
9741                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
9742                 dev_info(&pdev->dev,
9743                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
9744
9745         i40e_verify_eeprom(pf);
9746
9747         /* Rev 0 hardware was never productized */
9748         if (hw->revision_id < 1)
9749                 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");
9750
9751         i40e_clear_pxe_mode(hw);
9752         err = i40e_get_capabilities(pf);
9753         if (err)
9754                 goto err_adminq_setup;
9755
9756         err = i40e_sw_init(pf);
9757         if (err) {
9758                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
9759                 goto err_sw_init;
9760         }
9761
9762         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
9763                                 hw->func_caps.num_rx_qp,
9764                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
9765         if (err) {
9766                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
9767                 goto err_init_lan_hmc;
9768         }
9769
9770         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
9771         if (err) {
9772                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
9773                 err = -ENOENT;
9774                 goto err_configure_lan_hmc;
9775         }
9776
9777         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
9778          * Ignore error return codes because if it was already disabled via
9779          * hardware settings this will fail
9780          */
9781         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
9782             (pf->hw.aq.fw_maj_ver < 4)) {
9783                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
9784                 i40e_aq_stop_lldp(hw, true, NULL);
9785         }
9786
9787         i40e_get_mac_addr(hw, hw->mac.addr);
9788         if (!is_valid_ether_addr(hw->mac.addr)) {
9789                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
9790                 err = -EIO;
9791                 goto err_mac_addr;
9792         }
9793         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
9794         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
9795         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
9796         if (is_valid_ether_addr(hw->mac.port_addr))
9797                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
9798 #ifdef I40E_FCOE
9799         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
9800         if (err)
9801                 dev_info(&pdev->dev,
9802                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
9803         if (!is_valid_ether_addr(hw->mac.san_addr)) {
9804                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
9805                          hw->mac.san_addr);
9806                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
9807         }
9808         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
9809 #endif /* I40E_FCOE */
9810
9811         pci_set_drvdata(pdev, pf);
9812         pci_save_state(pdev);
9813 #ifdef CONFIG_I40E_DCB
9814         err = i40e_init_pf_dcb(pf);
9815         if (err) {
9816                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
9817                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9818                 /* Continue without DCB enabled */
9819         }
9820 #endif /* CONFIG_I40E_DCB */
9821
9822         /* set up periodic task facility */
9823         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
9824         pf->service_timer_period = HZ;
9825
9826         INIT_WORK(&pf->service_task, i40e_service_task);
9827         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
9828         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
9829         pf->link_check_timeout = jiffies;
9830
9831         /* WoL defaults to disabled */
9832         pf->wol_en = false;
9833         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
9834
9835         /* set up the main switch operations */
9836         i40e_determine_queue_usage(pf);
9837         err = i40e_init_interrupt_scheme(pf);
9838         if (err)
9839                 goto err_switch_setup;
9840
9841         /* The number of VSIs reported by the FW is the minimum guaranteed
9842          * to us; HW supports far more and we share the remaining pool with
9843          * the other PFs. We allocate space for more than the guarantee with
9844          * the understanding that we might not get them all later.
9845          */
9846         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
9847                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
9848         else
9849                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
9850
9851         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
9852         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
9853         pf->vsi = kzalloc(len, GFP_KERNEL);
9854         if (!pf->vsi) {
9855                 err = -ENOMEM;
9856                 goto err_switch_setup;
9857         }
9858
9859         err = i40e_setup_pf_switch(pf, false);
9860         if (err) {
9861                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
9862                 goto err_vsis;
9863         }
9864         /* if FDIR VSI was set up, start it now */
9865         for (i = 0; i < pf->num_alloc_vsi; i++) {
9866                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
9867                         i40e_vsi_open(pf->vsi[i]);
9868                         break;
9869                 }
9870         }
9871
9872         /* driver is only interested in link up/down and module qualification
9873          * reports from firmware
9874          */
9875         err = i40e_aq_set_phy_int_mask(&pf->hw,
9876                                        I40E_AQ_EVENT_LINK_UPDOWN |
9877                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
9878         if (err)
9879                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", err);
9880
9881         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
9882             (pf->hw.aq.fw_maj_ver < 4)) {
9883                 msleep(75);
9884                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
9885                 if (err)
9886                         dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
9887                                  pf->hw.aq.asq_last_status);
9888         }
9889         /* The main driver is (mostly) up and happy. We need to set this state
9890          * before setting up the misc vector or we get a race and the vector
9891          * ends up disabled forever.
9892          */
9893         clear_bit(__I40E_DOWN, &pf->state);
9894
9895         /* In case of MSIX we are going to setup the misc vector right here
9896          * to handle admin queue events etc. In case of legacy and MSI
9897          * the misc functionality and queue processing is combined in
9898          * the same vector and that gets setup at open.
9899          */
9900         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9901                 err = i40e_setup_misc_vector(pf);
9902                 if (err) {
9903                         dev_info(&pdev->dev,
9904                                  "setup of misc vector failed: %d\n", err);
9905                         goto err_vsis;
9906                 }
9907         }
9908
9909 #ifdef CONFIG_PCI_IOV
9910         /* prep for VF support */
9911         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9912             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
9913             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
9914                 u32 val;
9915
9916                 /* disable link interrupts for VFs */
9917                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
9918                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
9919                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
9920                 i40e_flush(hw);
9921
9922                 if (pci_num_vf(pdev)) {
9923                         dev_info(&pdev->dev,
9924                                  "Active VFs found, allocating resources.\n");
9925                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
9926                         if (err)
9927                                 dev_info(&pdev->dev,
9928                                          "Error %d allocating resources for existing VFs\n",
9929                                          err);
9930                 }
9931         }
9932 #endif /* CONFIG_PCI_IOV */
9933
9934         pfs_found++;
9935
9936         i40e_dbg_pf_init(pf);
9937
9938         /* tell the firmware that we're starting */
9939         i40e_send_version(pf);
9940
9941         /* since everything's happy, start the service_task timer */
9942         mod_timer(&pf->service_timer,
9943                   round_jiffies(jiffies + pf->service_timer_period));
9944
9945 #ifdef I40E_FCOE
9946         /* create FCoE interface */
9947         i40e_fcoe_vsi_setup(pf);
9948
9949 #endif
9950         /* Get the negotiated link width and speed from PCI config space */
9951         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
9952
9953         i40e_set_pci_config_data(hw, link_status);
9954
9955         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
9956                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
9957                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
9958                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
9959                  "Unknown"),
9960                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
9961                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
9962                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
9963                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
9964                  "Unknown"));
9965
9966         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
9967             hw->bus.speed < i40e_bus_speed_8000) {
9968                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
9969                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
9970         }
9971
9972         /* get the requested speeds from the fw */
9973         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
9974         if (err)
9975                 dev_info(&pf->pdev->dev, "get phy abilities failed, aq_err %d, advertised speed settings may not be correct\n",
9976                          err);
9977         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
9978
9979         /* print a string summarizing features */
9980         i40e_print_features(pf);
9981
9982         return 0;
9983
9984         /* Unwind what we've done if something failed in the setup */
9985 err_vsis:
9986         set_bit(__I40E_DOWN, &pf->state);
9987         i40e_clear_interrupt_scheme(pf);
9988         kfree(pf->vsi);
9989 err_switch_setup:
9990         i40e_reset_interrupt_capability(pf);
9991         del_timer_sync(&pf->service_timer);
9992 err_mac_addr:
9993 err_configure_lan_hmc:
9994         (void)i40e_shutdown_lan_hmc(hw);
9995 err_init_lan_hmc:
9996         kfree(pf->qp_pile);
9997 err_sw_init:
9998 err_adminq_setup:
9999         (void)i40e_shutdown_adminq(hw);
10000 err_pf_reset:
10001         iounmap(hw->hw_addr);
10002 err_ioremap:
10003         kfree(pf);
10004 err_pf_alloc:
10005         pci_disable_pcie_error_reporting(pdev);
10006         pci_release_selected_regions(pdev,
10007                                      pci_select_bars(pdev, IORESOURCE_MEM));
10008 err_pci_reg:
10009 err_dma:
10010         pci_disable_device(pdev);
10011         return err;
10012 }
10013
10014 /**
10015  * i40e_remove - Device removal routine
10016  * @pdev: PCI device information struct
10017  *
10018  * i40e_remove is called by the PCI subsystem to alert the driver
10019  * that is should release a PCI device.  This could be caused by a
10020  * Hot-Plug event, or because the driver is going to be removed from
10021  * memory.
10022  **/
10023 static void i40e_remove(struct pci_dev *pdev)
10024 {
10025         struct i40e_pf *pf = pci_get_drvdata(pdev);
10026         i40e_status ret_code;
10027         int i;
10028
10029         i40e_dbg_pf_exit(pf);
10030
10031         i40e_ptp_stop(pf);
10032
10033         /* no more scheduling of any task */
10034         set_bit(__I40E_DOWN, &pf->state);
10035         del_timer_sync(&pf->service_timer);
10036         cancel_work_sync(&pf->service_task);
10037         i40e_fdir_teardown(pf);
10038
10039         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10040                 i40e_free_vfs(pf);
10041                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10042         }
10043
10044         i40e_fdir_teardown(pf);
10045
10046         /* If there is a switch structure or any orphans, remove them.
10047          * This will leave only the PF's VSI remaining.
10048          */
10049         for (i = 0; i < I40E_MAX_VEB; i++) {
10050                 if (!pf->veb[i])
10051                         continue;
10052
10053                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10054                     pf->veb[i]->uplink_seid == 0)
10055                         i40e_switch_branch_release(pf->veb[i]);
10056         }
10057
10058         /* Now we can shutdown the PF's VSI, just before we kill
10059          * adminq and hmc.
10060          */
10061         if (pf->vsi[pf->lan_vsi])
10062                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10063
10064         /* shutdown and destroy the HMC */
10065         if (pf->hw.hmc.hmc_obj) {
10066                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10067                 if (ret_code)
10068                         dev_warn(&pdev->dev,
10069                                  "Failed to destroy the HMC resources: %d\n",
10070                                  ret_code);
10071         }
10072
10073         /* shutdown the adminq */
10074         ret_code = i40e_shutdown_adminq(&pf->hw);
10075         if (ret_code)
10076                 dev_warn(&pdev->dev,
10077                          "Failed to destroy the Admin Queue resources: %d\n",
10078                          ret_code);
10079
10080         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10081         i40e_clear_interrupt_scheme(pf);
10082         for (i = 0; i < pf->num_alloc_vsi; i++) {
10083                 if (pf->vsi[i]) {
10084                         i40e_vsi_clear_rings(pf->vsi[i]);
10085                         i40e_vsi_clear(pf->vsi[i]);
10086                         pf->vsi[i] = NULL;
10087                 }
10088         }
10089
10090         for (i = 0; i < I40E_MAX_VEB; i++) {
10091                 kfree(pf->veb[i]);
10092                 pf->veb[i] = NULL;
10093         }
10094
10095         kfree(pf->qp_pile);
10096         kfree(pf->vsi);
10097
10098         iounmap(pf->hw.hw_addr);
10099         kfree(pf);
10100         pci_release_selected_regions(pdev,
10101                                      pci_select_bars(pdev, IORESOURCE_MEM));
10102
10103         pci_disable_pcie_error_reporting(pdev);
10104         pci_disable_device(pdev);
10105 }
10106
10107 /**
10108  * i40e_pci_error_detected - warning that something funky happened in PCI land
10109  * @pdev: PCI device information struct
10110  *
10111  * Called to warn that something happened and the error handling steps
10112  * are in progress.  Allows the driver to quiesce things, be ready for
10113  * remediation.
10114  **/
10115 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10116                                                 enum pci_channel_state error)
10117 {
10118         struct i40e_pf *pf = pci_get_drvdata(pdev);
10119
10120         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10121
10122         /* shutdown all operations */
10123         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10124                 rtnl_lock();
10125                 i40e_prep_for_reset(pf);
10126                 rtnl_unlock();
10127         }
10128
10129         /* Request a slot reset */
10130         return PCI_ERS_RESULT_NEED_RESET;
10131 }
10132
10133 /**
10134  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10135  * @pdev: PCI device information struct
10136  *
10137  * Called to find if the driver can work with the device now that
10138  * the pci slot has been reset.  If a basic connection seems good
10139  * (registers are readable and have sane content) then return a
10140  * happy little PCI_ERS_RESULT_xxx.
10141  **/
10142 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10143 {
10144         struct i40e_pf *pf = pci_get_drvdata(pdev);
10145         pci_ers_result_t result;
10146         int err;
10147         u32 reg;
10148
10149         dev_info(&pdev->dev, "%s\n", __func__);
10150         if (pci_enable_device_mem(pdev)) {
10151                 dev_info(&pdev->dev,
10152                          "Cannot re-enable PCI device after reset.\n");
10153                 result = PCI_ERS_RESULT_DISCONNECT;
10154         } else {
10155                 pci_set_master(pdev);
10156                 pci_restore_state(pdev);
10157                 pci_save_state(pdev);
10158                 pci_wake_from_d3(pdev, false);
10159
10160                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10161                 if (reg == 0)
10162                         result = PCI_ERS_RESULT_RECOVERED;
10163                 else
10164                         result = PCI_ERS_RESULT_DISCONNECT;
10165         }
10166
10167         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10168         if (err) {
10169                 dev_info(&pdev->dev,
10170                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10171                          err);
10172                 /* non-fatal, continue */
10173         }
10174
10175         return result;
10176 }
10177
10178 /**
10179  * i40e_pci_error_resume - restart operations after PCI error recovery
10180  * @pdev: PCI device information struct
10181  *
10182  * Called to allow the driver to bring things back up after PCI error
10183  * and/or reset recovery has finished.
10184  **/
10185 static void i40e_pci_error_resume(struct pci_dev *pdev)
10186 {
10187         struct i40e_pf *pf = pci_get_drvdata(pdev);
10188
10189         dev_info(&pdev->dev, "%s\n", __func__);
10190         if (test_bit(__I40E_SUSPENDED, &pf->state))
10191                 return;
10192
10193         rtnl_lock();
10194         i40e_handle_reset_warning(pf);
10195         rtnl_lock();
10196 }
10197
10198 /**
10199  * i40e_shutdown - PCI callback for shutting down
10200  * @pdev: PCI device information struct
10201  **/
10202 static void i40e_shutdown(struct pci_dev *pdev)
10203 {
10204         struct i40e_pf *pf = pci_get_drvdata(pdev);
10205         struct i40e_hw *hw = &pf->hw;
10206
10207         set_bit(__I40E_SUSPENDED, &pf->state);
10208         set_bit(__I40E_DOWN, &pf->state);
10209         rtnl_lock();
10210         i40e_prep_for_reset(pf);
10211         rtnl_unlock();
10212
10213         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10214         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10215
10216         i40e_clear_interrupt_scheme(pf);
10217
10218         if (system_state == SYSTEM_POWER_OFF) {
10219                 pci_wake_from_d3(pdev, pf->wol_en);
10220                 pci_set_power_state(pdev, PCI_D3hot);
10221         }
10222 }
10223
10224 #ifdef CONFIG_PM
10225 /**
10226  * i40e_suspend - PCI callback for moving to D3
10227  * @pdev: PCI device information struct
10228  **/
10229 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10230 {
10231         struct i40e_pf *pf = pci_get_drvdata(pdev);
10232         struct i40e_hw *hw = &pf->hw;
10233
10234         set_bit(__I40E_SUSPENDED, &pf->state);
10235         set_bit(__I40E_DOWN, &pf->state);
10236         del_timer_sync(&pf->service_timer);
10237         cancel_work_sync(&pf->service_task);
10238         i40e_fdir_teardown(pf);
10239
10240         rtnl_lock();
10241         i40e_prep_for_reset(pf);
10242         rtnl_unlock();
10243
10244         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10245         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10246
10247         pci_wake_from_d3(pdev, pf->wol_en);
10248         pci_set_power_state(pdev, PCI_D3hot);
10249
10250         return 0;
10251 }
10252
10253 /**
10254  * i40e_resume - PCI callback for waking up from D3
10255  * @pdev: PCI device information struct
10256  **/
10257 static int i40e_resume(struct pci_dev *pdev)
10258 {
10259         struct i40e_pf *pf = pci_get_drvdata(pdev);
10260         u32 err;
10261
10262         pci_set_power_state(pdev, PCI_D0);
10263         pci_restore_state(pdev);
10264         /* pci_restore_state() clears dev->state_saves, so
10265          * call pci_save_state() again to restore it.
10266          */
10267         pci_save_state(pdev);
10268
10269         err = pci_enable_device_mem(pdev);
10270         if (err) {
10271                 dev_err(&pdev->dev,
10272                         "%s: Cannot enable PCI device from suspend\n",
10273                         __func__);
10274                 return err;
10275         }
10276         pci_set_master(pdev);
10277
10278         /* no wakeup events while running */
10279         pci_wake_from_d3(pdev, false);
10280
10281         /* handling the reset will rebuild the device state */
10282         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10283                 clear_bit(__I40E_DOWN, &pf->state);
10284                 rtnl_lock();
10285                 i40e_reset_and_rebuild(pf, false);
10286                 rtnl_unlock();
10287         }
10288
10289         return 0;
10290 }
10291
10292 #endif
10293 static const struct pci_error_handlers i40e_err_handler = {
10294         .error_detected = i40e_pci_error_detected,
10295         .slot_reset = i40e_pci_error_slot_reset,
10296         .resume = i40e_pci_error_resume,
10297 };
10298
10299 static struct pci_driver i40e_driver = {
10300         .name     = i40e_driver_name,
10301         .id_table = i40e_pci_tbl,
10302         .probe    = i40e_probe,
10303         .remove   = i40e_remove,
10304 #ifdef CONFIG_PM
10305         .suspend  = i40e_suspend,
10306         .resume   = i40e_resume,
10307 #endif
10308         .shutdown = i40e_shutdown,
10309         .err_handler = &i40e_err_handler,
10310         .sriov_configure = i40e_pci_sriov_configure,
10311 };
10312
10313 /**
10314  * i40e_init_module - Driver registration routine
10315  *
10316  * i40e_init_module is the first routine called when the driver is
10317  * loaded. All it does is register with the PCI subsystem.
10318  **/
10319 static int __init i40e_init_module(void)
10320 {
10321         pr_info("%s: %s - version %s\n", i40e_driver_name,
10322                 i40e_driver_string, i40e_driver_version_str);
10323         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10324
10325         i40e_dbg_init();
10326         return pci_register_driver(&i40e_driver);
10327 }
10328 module_init(i40e_init_module);
10329
10330 /**
10331  * i40e_exit_module - Driver exit cleanup routine
10332  *
10333  * i40e_exit_module is called just before the driver is removed
10334  * from memory.
10335  **/
10336 static void __exit i40e_exit_module(void)
10337 {
10338         pci_unregister_driver(&i40e_driver);
10339         i40e_dbg_exit();
10340 }
10341 module_exit(i40e_exit_module);