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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2014 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 /* Local includes */
  28 #include "i40e.h"
  29 #include "i40e_diag.h"
  30 #ifdef CONFIG_I40E_VXLAN
  31 #include <net/vxlan.h>
  32 #endif
  33
  34 const char i40e_driver_name[] = "i40e";
  35 static const char i40e_driver_string[] =
  36                         "Intel(R) Ethernet Connection XL710 Network Driver";
  37
  38 #define DRV_KERN "-k"
  39
  40 #define DRV_VERSION_MAJOR 0
  41 #define DRV_VERSION_MINOR 4
  42 #define DRV_VERSION_BUILD 21
  43 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  44              __stringify(DRV_VERSION_MINOR) "." \
  45              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  46 const char i40e_driver_version_str[] = DRV_VERSION;
  47 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  48
  49 /* a bit of forward declarations */
  50 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  51 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  52 static int i40e_add_vsi(struct i40e_vsi *vsi);
  53 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  54 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  55 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  56 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  57 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  58 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  59 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  60
  61 /* i40e_pci_tbl - PCI Device ID Table
  62  *
  63  * Last entry must be all 0s
  64  *
  65  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  66  *   Class, Class Mask, private data (not used) }
  67  */
  68 static DEFINE_PCI_DEVICE_TABLE(i40e_pci_tbl) = {
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  77         /* required last entry */
  78         {0, }
  79 };
  80 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  81
  82 #define I40E_MAX_VF_COUNT 128
  83 static int debug = -1;
  84 module_param(debug, int, 0);
  85 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  86
  87 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  88 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  89 MODULE_LICENSE("GPL");
  90 MODULE_VERSION(DRV_VERSION);
  91
  92 /**
  93  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  94  * @hw:   pointer to the HW structure
  95  * @mem:  ptr to mem struct to fill out
  96  * @size: size of memory requested
  97  * @alignment: what to align the allocation to
  98  **/
  99 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 100                             u64 size, u32 alignment)
 101 {
 102         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 103
 104         mem->size = ALIGN(size, alignment);
 105         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 106                                       &mem->pa, GFP_KERNEL);
 107         if (!mem->va)
 108                 return -ENOMEM;
 109
 110         return 0;
 111 }
 112
 113 /**
 114  * i40e_free_dma_mem_d - OS specific memory free for shared code
 115  * @hw:   pointer to the HW structure
 116  * @mem:  ptr to mem struct to free
 117  **/
 118 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 119 {
 120         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 121
 122         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 123         mem->va = NULL;
 124         mem->pa = 0;
 125         mem->size = 0;
 126
 127         return 0;
 128 }
 129
 130 /**
 131  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 132  * @hw:   pointer to the HW structure
 133  * @mem:  ptr to mem struct to fill out
 134  * @size: size of memory requested
 135  **/
 136 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 137                              u32 size)
 138 {
 139         mem->size = size;
 140         mem->va = kzalloc(size, GFP_KERNEL);
 141
 142         if (!mem->va)
 143                 return -ENOMEM;
 144
 145         return 0;
 146 }
 147
 148 /**
 149  * i40e_free_virt_mem_d - OS specific memory free for shared code
 150  * @hw:   pointer to the HW structure
 151  * @mem:  ptr to mem struct to free
 152  **/
 153 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 154 {
 155         /* it's ok to kfree a NULL pointer */
 156         kfree(mem->va);
 157         mem->va = NULL;
 158         mem->size = 0;
 159
 160         return 0;
 161 }
 162
 163 /**
 164  * i40e_get_lump - find a lump of free generic resource
 165  * @pf: board private structure
 166  * @pile: the pile of resource to search
 167  * @needed: the number of items needed
 168  * @id: an owner id to stick on the items assigned
 169  *
 170  * Returns the base item index of the lump, or negative for error
 171  *
 172  * The search_hint trick and lack of advanced fit-finding only work
 173  * because we're highly likely to have all the same size lump requests.
 174  * Linear search time and any fragmentation should be minimal.
 175  **/
 176 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 177                          u16 needed, u16 id)
 178 {
 179         int ret = -ENOMEM;
 180         int i, j;
 181
 182         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 183                 dev_info(&pf->pdev->dev,
 184                          "param err: pile=%p needed=%d id=0x%04x\n",
 185                          pile, needed, id);
 186                 return -EINVAL;
 187         }
 188
 189         /* start the linear search with an imperfect hint */
 190         i = pile->search_hint;
 191         while (i < pile->num_entries) {
 192                 /* skip already allocated entries */
 193                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 194                         i++;
 195                         continue;
 196                 }
 197
 198                 /* do we have enough in this lump? */
 199                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 200                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 201                                 break;
 202                 }
 203
 204                 if (j == needed) {
 205                         /* there was enough, so assign it to the requestor */
 206                         for (j = 0; j < needed; j++)
 207                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 208                         ret = i;
 209                         pile->search_hint = i + j;
 210                         break;
 211                 } else {
 212                         /* not enough, so skip over it and continue looking */
 213                         i += j;
 214                 }
 215         }
 216
 217         return ret;
 218 }
 219
 220 /**
 221  * i40e_put_lump - return a lump of generic resource
 222  * @pile: the pile of resource to search
 223  * @index: the base item index
 224  * @id: the owner id of the items assigned
 225  *
 226  * Returns the count of items in the lump
 227  **/
 228 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 229 {
 230         int valid_id = (id | I40E_PILE_VALID_BIT);
 231         int count = 0;
 232         int i;
 233
 234         if (!pile || index >= pile->num_entries)
 235                 return -EINVAL;
 236
 237         for (i = index;
 238              i < pile->num_entries && pile->list[i] == valid_id;
 239              i++) {
 240                 pile->list[i] = 0;
 241                 count++;
 242         }
 243
 244         if (count && index < pile->search_hint)
 245                 pile->search_hint = index;
 246
 247         return count;
 248 }
 249
 250 /**
 251  * i40e_service_event_schedule - Schedule the service task to wake up
 252  * @pf: board private structure
 253  *
 254  * If not already scheduled, this puts the task into the work queue
 255  **/
 256 static void i40e_service_event_schedule(struct i40e_pf *pf)
 257 {
 258         if (!test_bit(__I40E_DOWN, &pf->state) &&
 259             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 260             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 261                 schedule_work(&pf->service_task);
 262 }
 263
 264 /**
 265  * i40e_tx_timeout - Respond to a Tx Hang
 266  * @netdev: network interface device structure
 267  *
 268  * If any port has noticed a Tx timeout, it is likely that the whole
 269  * device is munged, not just the one netdev port, so go for the full
 270  * reset.
 271  **/
 272 #ifdef I40E_FCOE
 273 void i40e_tx_timeout(struct net_device *netdev)
 274 #else
 275 static void i40e_tx_timeout(struct net_device *netdev)
 276 #endif
 277 {
 278         struct i40e_netdev_priv *np = netdev_priv(netdev);
 279         struct i40e_vsi *vsi = np->vsi;
 280         struct i40e_pf *pf = vsi->back;
 281
 282         pf->tx_timeout_count++;
 283
 284         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 285                 pf->tx_timeout_recovery_level = 1;
 286         pf->tx_timeout_last_recovery = jiffies;
 287         netdev_info(netdev, "tx_timeout recovery level %d\n",
 288                     pf->tx_timeout_recovery_level);
 289
 290         switch (pf->tx_timeout_recovery_level) {
 291         case 0:
 292                 /* disable and re-enable queues for the VSI */
 293                 if (in_interrupt()) {
 294                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 295                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 296                 } else {
 297                         i40e_vsi_reinit_locked(vsi);
 298                 }
 299                 break;
 300         case 1:
 301                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 302                 break;
 303         case 2:
 304                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 305                 break;
 306         case 3:
 307                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 308                 break;
 309         default:
 310                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 311                 set_bit(__I40E_DOWN_REQUESTED, &pf->state);
 312                 set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
 313                 break;
 314         }
 315         i40e_service_event_schedule(pf);
 316         pf->tx_timeout_recovery_level++;
 317 }
 318
 319 /**
 320  * i40e_release_rx_desc - Store the new tail and head values
 321  * @rx_ring: ring to bump
 322  * @val: new head index
 323  **/
 324 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 325 {
 326         rx_ring->next_to_use = val;
 327
 328         /* Force memory writes to complete before letting h/w
 329          * know there are new descriptors to fetch.  (Only
 330          * applicable for weak-ordered memory model archs,
 331          * such as IA-64).
 332          */
 333         wmb();
 334         writel(val, rx_ring->tail);
 335 }
 336
 337 /**
 338  * i40e_get_vsi_stats_struct - Get System Network Statistics
 339  * @vsi: the VSI we care about
 340  *
 341  * Returns the address of the device statistics structure.
 342  * The statistics are actually updated from the service task.
 343  **/
 344 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 345 {
 346         return &vsi->net_stats;
 347 }
 348
 349 /**
 350  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 351  * @netdev: network interface device structure
 352  *
 353  * Returns the address of the device statistics structure.
 354  * The statistics are actually updated from the service task.
 355  **/
 356 #ifdef I40E_FCOE
 357 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 358                                              struct net_device *netdev,
 359                                              struct rtnl_link_stats64 *stats)
 360 #else
 361 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 362                                              struct net_device *netdev,
 363                                              struct rtnl_link_stats64 *stats)
 364 #endif
 365 {
 366         struct i40e_netdev_priv *np = netdev_priv(netdev);
 367         struct i40e_ring *tx_ring, *rx_ring;
 368         struct i40e_vsi *vsi = np->vsi;
 369         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 370         int i;
 371
 372         if (test_bit(__I40E_DOWN, &vsi->state))
 373                 return stats;
 374
 375         if (!vsi->tx_rings)
 376                 return stats;
 377
 378         rcu_read_lock();
 379         for (i = 0; i < vsi->num_queue_pairs; i++) {
 380                 u64 bytes, packets;
 381                 unsigned int start;
 382
 383                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 384                 if (!tx_ring)
 385                         continue;
 386
 387                 do {
 388                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 389                         packets = tx_ring->stats.packets;
 390                         bytes   = tx_ring->stats.bytes;
 391                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 392
 393                 stats->tx_packets += packets;
 394                 stats->tx_bytes   += bytes;
 395                 rx_ring = &tx_ring[1];
 396
 397                 do {
 398                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 399                         packets = rx_ring->stats.packets;
 400                         bytes   = rx_ring->stats.bytes;
 401                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 402
 403                 stats->rx_packets += packets;
 404                 stats->rx_bytes   += bytes;
 405         }
 406         rcu_read_unlock();
 407
 408         /* following stats updated by i40e_watchdog_subtask() */
 409         stats->multicast        = vsi_stats->multicast;
 410         stats->tx_errors        = vsi_stats->tx_errors;
 411         stats->tx_dropped       = vsi_stats->tx_dropped;
 412         stats->rx_errors        = vsi_stats->rx_errors;
 413         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 414         stats->rx_length_errors = vsi_stats->rx_length_errors;
 415
 416         return stats;
 417 }
 418
 419 /**
 420  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 421  * @vsi: the VSI to have its stats reset
 422  **/
 423 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 424 {
 425         struct rtnl_link_stats64 *ns;
 426         int i;
 427
 428         if (!vsi)
 429                 return;
 430
 431         ns = i40e_get_vsi_stats_struct(vsi);
 432         memset(ns, 0, sizeof(*ns));
 433         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 434         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 435         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 436         if (vsi->rx_rings && vsi->rx_rings[0]) {
 437                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 438                         memset(&vsi->rx_rings[i]->stats, 0 ,
 439                                sizeof(vsi->rx_rings[i]->stats));
 440                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 441                                sizeof(vsi->rx_rings[i]->rx_stats));
 442                         memset(&vsi->tx_rings[i]->stats, 0 ,
 443                                sizeof(vsi->tx_rings[i]->stats));
 444                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 445                                sizeof(vsi->tx_rings[i]->tx_stats));
 446                 }
 447         }
 448         vsi->stat_offsets_loaded = false;
 449 }
 450
 451 /**
 452  * i40e_pf_reset_stats - Reset all of the stats for the given pf
 453  * @pf: the PF to be reset
 454  **/
 455 void i40e_pf_reset_stats(struct i40e_pf *pf)
 456 {
 457         int i;
 458
 459         memset(&pf->stats, 0, sizeof(pf->stats));
 460         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 461         pf->stat_offsets_loaded = false;
 462
 463         for (i = 0; i < I40E_MAX_VEB; i++) {
 464                 if (pf->veb[i]) {
 465                         memset(&pf->veb[i]->stats, 0,
 466                                sizeof(pf->veb[i]->stats));
 467                         memset(&pf->veb[i]->stats_offsets, 0,
 468                                sizeof(pf->veb[i]->stats_offsets));
 469                         pf->veb[i]->stat_offsets_loaded = false;
 470                 }
 471         }
 472 }
 473
 474 /**
 475  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 476  * @hw: ptr to the hardware info
 477  * @hireg: the high 32 bit reg to read
 478  * @loreg: the low 32 bit reg to read
 479  * @offset_loaded: has the initial offset been loaded yet
 480  * @offset: ptr to current offset value
 481  * @stat: ptr to the stat
 482  *
 483  * Since the device stats are not reset at PFReset, they likely will not
 484  * be zeroed when the driver starts.  We'll save the first values read
 485  * and use them as offsets to be subtracted from the raw values in order
 486  * to report stats that count from zero.  In the process, we also manage
 487  * the potential roll-over.
 488  **/
 489 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 490                                bool offset_loaded, u64 *offset, u64 *stat)
 491 {
 492         u64 new_data;
 493
 494         if (hw->device_id == I40E_DEV_ID_QEMU) {
 495                 new_data = rd32(hw, loreg);
 496                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 497         } else {
 498                 new_data = rd64(hw, loreg);
 499         }
 500         if (!offset_loaded)
 501                 *offset = new_data;
 502         if (likely(new_data >= *offset))
 503                 *stat = new_data - *offset;
 504         else
 505                 *stat = (new_data + ((u64)1 << 48)) - *offset;
 506         *stat &= 0xFFFFFFFFFFFFULL;
 507 }
 508
 509 /**
 510  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 511  * @hw: ptr to the hardware info
 512  * @reg: the hw reg to read
 513  * @offset_loaded: has the initial offset been loaded yet
 514  * @offset: ptr to current offset value
 515  * @stat: ptr to the stat
 516  **/
 517 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 518                                bool offset_loaded, u64 *offset, u64 *stat)
 519 {
 520         u32 new_data;
 521
 522         new_data = rd32(hw, reg);
 523         if (!offset_loaded)
 524                 *offset = new_data;
 525         if (likely(new_data >= *offset))
 526                 *stat = (u32)(new_data - *offset);
 527         else
 528                 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
 529 }
 530
 531 /**
 532  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 533  * @vsi: the VSI to be updated
 534  **/
 535 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 536 {
 537         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 538         struct i40e_pf *pf = vsi->back;
 539         struct i40e_hw *hw = &pf->hw;
 540         struct i40e_eth_stats *oes;
 541         struct i40e_eth_stats *es;     /* device's eth stats */
 542
 543         es = &vsi->eth_stats;
 544         oes = &vsi->eth_stats_offsets;
 545
 546         /* Gather up the stats that the hw collects */
 547         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 548                            vsi->stat_offsets_loaded,
 549                            &oes->tx_errors, &es->tx_errors);
 550         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 551                            vsi->stat_offsets_loaded,
 552                            &oes->rx_discards, &es->rx_discards);
 553         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 554                            vsi->stat_offsets_loaded,
 555                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 556         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 557                            vsi->stat_offsets_loaded,
 558                            &oes->tx_errors, &es->tx_errors);
 559
 560         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 561                            I40E_GLV_GORCL(stat_idx),
 562                            vsi->stat_offsets_loaded,
 563                            &oes->rx_bytes, &es->rx_bytes);
 564         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 565                            I40E_GLV_UPRCL(stat_idx),
 566                            vsi->stat_offsets_loaded,
 567                            &oes->rx_unicast, &es->rx_unicast);
 568         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 569                            I40E_GLV_MPRCL(stat_idx),
 570                            vsi->stat_offsets_loaded,
 571                            &oes->rx_multicast, &es->rx_multicast);
 572         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 573                            I40E_GLV_BPRCL(stat_idx),
 574                            vsi->stat_offsets_loaded,
 575                            &oes->rx_broadcast, &es->rx_broadcast);
 576
 577         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 578                            I40E_GLV_GOTCL(stat_idx),
 579                            vsi->stat_offsets_loaded,
 580                            &oes->tx_bytes, &es->tx_bytes);
 581         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 582                            I40E_GLV_UPTCL(stat_idx),
 583                            vsi->stat_offsets_loaded,
 584                            &oes->tx_unicast, &es->tx_unicast);
 585         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 586                            I40E_GLV_MPTCL(stat_idx),
 587                            vsi->stat_offsets_loaded,
 588                            &oes->tx_multicast, &es->tx_multicast);
 589         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 590                            I40E_GLV_BPTCL(stat_idx),
 591                            vsi->stat_offsets_loaded,
 592                            &oes->tx_broadcast, &es->tx_broadcast);
 593         vsi->stat_offsets_loaded = true;
 594 }
 595
 596 /**
 597  * i40e_update_veb_stats - Update Switch component statistics
 598  * @veb: the VEB being updated
 599  **/
 600 static void i40e_update_veb_stats(struct i40e_veb *veb)
 601 {
 602         struct i40e_pf *pf = veb->pf;
 603         struct i40e_hw *hw = &pf->hw;
 604         struct i40e_eth_stats *oes;
 605         struct i40e_eth_stats *es;     /* device's eth stats */
 606         int idx = 0;
 607
 608         idx = veb->stats_idx;
 609         es = &veb->stats;
 610         oes = &veb->stats_offsets;
 611
 612         /* Gather up the stats that the hw collects */
 613         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 614                            veb->stat_offsets_loaded,
 615                            &oes->tx_discards, &es->tx_discards);
 616         if (hw->revision_id > 0)
 617                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 618                                    veb->stat_offsets_loaded,
 619                                    &oes->rx_unknown_protocol,
 620                                    &es->rx_unknown_protocol);
 621         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 622                            veb->stat_offsets_loaded,
 623                            &oes->rx_bytes, &es->rx_bytes);
 624         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 625                            veb->stat_offsets_loaded,
 626                            &oes->rx_unicast, &es->rx_unicast);
 627         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 628                            veb->stat_offsets_loaded,
 629                            &oes->rx_multicast, &es->rx_multicast);
 630         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 631                            veb->stat_offsets_loaded,
 632                            &oes->rx_broadcast, &es->rx_broadcast);
 633
 634         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 635                            veb->stat_offsets_loaded,
 636                            &oes->tx_bytes, &es->tx_bytes);
 637         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 638                            veb->stat_offsets_loaded,
 639                            &oes->tx_unicast, &es->tx_unicast);
 640         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 641                            veb->stat_offsets_loaded,
 642                            &oes->tx_multicast, &es->tx_multicast);
 643         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 644                            veb->stat_offsets_loaded,
 645                            &oes->tx_broadcast, &es->tx_broadcast);
 646         veb->stat_offsets_loaded = true;
 647 }
 648
 649 #ifdef I40E_FCOE
 650 /**
 651  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 652  * @vsi: the VSI that is capable of doing FCoE
 653  **/
 654 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 655 {
 656         struct i40e_pf *pf = vsi->back;
 657         struct i40e_hw *hw = &pf->hw;
 658         struct i40e_fcoe_stats *ofs;
 659         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 660         int idx;
 661
 662         if (vsi->type != I40E_VSI_FCOE)
 663                 return;
 664
 665         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 666         fs = &vsi->fcoe_stats;
 667         ofs = &vsi->fcoe_stats_offsets;
 668
 669         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 670                            vsi->fcoe_stat_offsets_loaded,
 671                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 672         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 673                            vsi->fcoe_stat_offsets_loaded,
 674                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 675         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 676                            vsi->fcoe_stat_offsets_loaded,
 677                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 678         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 679                            vsi->fcoe_stat_offsets_loaded,
 680                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 681         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 682                            vsi->fcoe_stat_offsets_loaded,
 683                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 684         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 685                            vsi->fcoe_stat_offsets_loaded,
 686                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 687         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 688                            vsi->fcoe_stat_offsets_loaded,
 689                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 690         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 691                            vsi->fcoe_stat_offsets_loaded,
 692                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 693
 694         vsi->fcoe_stat_offsets_loaded = true;
 695 }
 696
 697 #endif
 698 /**
 699  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 700  * @pf: the corresponding PF
 701  *
 702  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 703  **/
 704 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 705 {
 706         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 707         struct i40e_hw_port_stats *nsd = &pf->stats;
 708         struct i40e_hw *hw = &pf->hw;
 709         u64 xoff = 0;
 710         u16 i, v;
 711
 712         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 713             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 714                 return;
 715
 716         xoff = nsd->link_xoff_rx;
 717         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 718                            pf->stat_offsets_loaded,
 719                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 720
 721         /* No new LFC xoff rx */
 722         if (!(nsd->link_xoff_rx - xoff))
 723                 return;
 724
 725         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 726         for (v = 0; v < pf->num_alloc_vsi; v++) {
 727                 struct i40e_vsi *vsi = pf->vsi[v];
 728
 729                 if (!vsi || !vsi->tx_rings[0])
 730                         continue;
 731
 732                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 733                         struct i40e_ring *ring = vsi->tx_rings[i];
 734                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 735                 }
 736         }
 737 }
 738
 739 /**
 740  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 741  * @pf: the corresponding PF
 742  *
 743  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 744  **/
 745 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 746 {
 747         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 748         struct i40e_hw_port_stats *nsd = &pf->stats;
 749         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 750         struct i40e_dcbx_config *dcb_cfg;
 751         struct i40e_hw *hw = &pf->hw;
 752         u16 i, v;
 753         u8 tc;
 754
 755         dcb_cfg = &hw->local_dcbx_config;
 756
 757         /* See if DCB enabled with PFC TC */
 758         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 759             !(dcb_cfg->pfc.pfcenable)) {
 760                 i40e_update_link_xoff_rx(pf);
 761                 return;
 762         }
 763
 764         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 765                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 766                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 767                                    pf->stat_offsets_loaded,
 768                                    &osd->priority_xoff_rx[i],
 769                                    &nsd->priority_xoff_rx[i]);
 770
 771                 /* No new PFC xoff rx */
 772                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 773                         continue;
 774                 /* Get the TC for given priority */
 775                 tc = dcb_cfg->etscfg.prioritytable[i];
 776                 xoff[tc] = true;
 777         }
 778
 779         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 780         for (v = 0; v < pf->num_alloc_vsi; v++) {
 781                 struct i40e_vsi *vsi = pf->vsi[v];
 782
 783                 if (!vsi || !vsi->tx_rings[0])
 784                         continue;
 785
 786                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 787                         struct i40e_ring *ring = vsi->tx_rings[i];
 788
 789                         tc = ring->dcb_tc;
 790                         if (xoff[tc])
 791                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 792                                           &ring->state);
 793                 }
 794         }
 795 }
 796
 797 /**
 798  * i40e_update_vsi_stats - Update the vsi statistics counters.
 799  * @vsi: the VSI to be updated
 800  *
 801  * There are a few instances where we store the same stat in a
 802  * couple of different structs.  This is partly because we have
 803  * the netdev stats that need to be filled out, which is slightly
 804  * different from the "eth_stats" defined by the chip and used in
 805  * VF communications.  We sort it out here.
 806  **/
 807 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 808 {
 809         struct i40e_pf *pf = vsi->back;
 810         struct rtnl_link_stats64 *ons;
 811         struct rtnl_link_stats64 *ns;   /* netdev stats */
 812         struct i40e_eth_stats *oes;
 813         struct i40e_eth_stats *es;     /* device's eth stats */
 814         u32 tx_restart, tx_busy;
 815         u32 rx_page, rx_buf;
 816         u64 rx_p, rx_b;
 817         u64 tx_p, tx_b;
 818         u16 q;
 819
 820         if (test_bit(__I40E_DOWN, &vsi->state) ||
 821             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 822                 return;
 823
 824         ns = i40e_get_vsi_stats_struct(vsi);
 825         ons = &vsi->net_stats_offsets;
 826         es = &vsi->eth_stats;
 827         oes = &vsi->eth_stats_offsets;
 828
 829         /* Gather up the netdev and vsi stats that the driver collects
 830          * on the fly during packet processing
 831          */
 832         rx_b = rx_p = 0;
 833         tx_b = tx_p = 0;
 834         tx_restart = tx_busy = 0;
 835         rx_page = 0;
 836         rx_buf = 0;
 837         rcu_read_lock();
 838         for (q = 0; q < vsi->num_queue_pairs; q++) {
 839                 struct i40e_ring *p;
 840                 u64 bytes, packets;
 841                 unsigned int start;
 842
 843                 /* locate Tx ring */
 844                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 845
 846                 do {
 847                         start = u64_stats_fetch_begin_irq(&p->syncp);
 848                         packets = p->stats.packets;
 849                         bytes = p->stats.bytes;
 850                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 851                 tx_b += bytes;
 852                 tx_p += packets;
 853                 tx_restart += p->tx_stats.restart_queue;
 854                 tx_busy += p->tx_stats.tx_busy;
 855
 856                 /* Rx queue is part of the same block as Tx queue */
 857                 p = &p[1];
 858                 do {
 859                         start = u64_stats_fetch_begin_irq(&p->syncp);
 860                         packets = p->stats.packets;
 861                         bytes = p->stats.bytes;
 862                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 863                 rx_b += bytes;
 864                 rx_p += packets;
 865                 rx_buf += p->rx_stats.alloc_buff_failed;
 866                 rx_page += p->rx_stats.alloc_page_failed;
 867         }
 868         rcu_read_unlock();
 869         vsi->tx_restart = tx_restart;
 870         vsi->tx_busy = tx_busy;
 871         vsi->rx_page_failed = rx_page;
 872         vsi->rx_buf_failed = rx_buf;
 873
 874         ns->rx_packets = rx_p;
 875         ns->rx_bytes = rx_b;
 876         ns->tx_packets = tx_p;
 877         ns->tx_bytes = tx_b;
 878
 879         /* update netdev stats from eth stats */
 880         i40e_update_eth_stats(vsi);
 881         ons->tx_errors = oes->tx_errors;
 882         ns->tx_errors = es->tx_errors;
 883         ons->multicast = oes->rx_multicast;
 884         ns->multicast = es->rx_multicast;
 885         ons->rx_dropped = oes->rx_discards;
 886         ns->rx_dropped = es->rx_discards;
 887         ons->tx_dropped = oes->tx_discards;
 888         ns->tx_dropped = es->tx_discards;
 889
 890         /* pull in a couple PF stats if this is the main vsi */
 891         if (vsi == pf->vsi[pf->lan_vsi]) {
 892                 ns->rx_crc_errors = pf->stats.crc_errors;
 893                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 894                 ns->rx_length_errors = pf->stats.rx_length_errors;
 895         }
 896 }
 897
 898 /**
 899  * i40e_update_pf_stats - Update the pf statistics counters.
 900  * @pf: the PF to be updated
 901  **/
 902 static void i40e_update_pf_stats(struct i40e_pf *pf)
 903 {
 904         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 905         struct i40e_hw_port_stats *nsd = &pf->stats;
 906         struct i40e_hw *hw = &pf->hw;
 907         u32 val;
 908         int i;
 909
 910         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 911                            I40E_GLPRT_GORCL(hw->port),
 912                            pf->stat_offsets_loaded,
 913                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 914         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 915                            I40E_GLPRT_GOTCL(hw->port),
 916                            pf->stat_offsets_loaded,
 917                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 918         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 919                            pf->stat_offsets_loaded,
 920                            &osd->eth.rx_discards,
 921                            &nsd->eth.rx_discards);
 922         i40e_stat_update32(hw, I40E_GLPRT_TDPC(hw->port),
 923                            pf->stat_offsets_loaded,
 924                            &osd->eth.tx_discards,
 925                            &nsd->eth.tx_discards);
 926
 927         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 928                            I40E_GLPRT_UPRCL(hw->port),
 929                            pf->stat_offsets_loaded,
 930                            &osd->eth.rx_unicast,
 931                            &nsd->eth.rx_unicast);
 932         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 933                            I40E_GLPRT_MPRCL(hw->port),
 934                            pf->stat_offsets_loaded,
 935                            &osd->eth.rx_multicast,
 936                            &nsd->eth.rx_multicast);
 937         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 938                            I40E_GLPRT_BPRCL(hw->port),
 939                            pf->stat_offsets_loaded,
 940                            &osd->eth.rx_broadcast,
 941                            &nsd->eth.rx_broadcast);
 942         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 943                            I40E_GLPRT_UPTCL(hw->port),
 944                            pf->stat_offsets_loaded,
 945                            &osd->eth.tx_unicast,
 946                            &nsd->eth.tx_unicast);
 947         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 948                            I40E_GLPRT_MPTCL(hw->port),
 949                            pf->stat_offsets_loaded,
 950                            &osd->eth.tx_multicast,
 951                            &nsd->eth.tx_multicast);
 952         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 953                            I40E_GLPRT_BPTCL(hw->port),
 954                            pf->stat_offsets_loaded,
 955                            &osd->eth.tx_broadcast,
 956                            &nsd->eth.tx_broadcast);
 957
 958         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 959                            pf->stat_offsets_loaded,
 960                            &osd->tx_dropped_link_down,
 961                            &nsd->tx_dropped_link_down);
 962
 963         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 964                            pf->stat_offsets_loaded,
 965                            &osd->crc_errors, &nsd->crc_errors);
 966
 967         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 968                            pf->stat_offsets_loaded,
 969                            &osd->illegal_bytes, &nsd->illegal_bytes);
 970
 971         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 972                            pf->stat_offsets_loaded,
 973                            &osd->mac_local_faults,
 974                            &nsd->mac_local_faults);
 975         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 976                            pf->stat_offsets_loaded,
 977                            &osd->mac_remote_faults,
 978                            &nsd->mac_remote_faults);
 979
 980         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 981                            pf->stat_offsets_loaded,
 982                            &osd->rx_length_errors,
 983                            &nsd->rx_length_errors);
 984
 985         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 986                            pf->stat_offsets_loaded,
 987                            &osd->link_xon_rx, &nsd->link_xon_rx);
 988         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 989                            pf->stat_offsets_loaded,
 990                            &osd->link_xon_tx, &nsd->link_xon_tx);
 991         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
 992         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 993                            pf->stat_offsets_loaded,
 994                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 995
 996         for (i = 0; i < 8; i++) {
 997                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 998                                    pf->stat_offsets_loaded,
 999                                    &osd->priority_xon_rx[i],
1000                                    &nsd->priority_xon_rx[i]);
1001                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1002                                    pf->stat_offsets_loaded,
1003                                    &osd->priority_xon_tx[i],
1004                                    &nsd->priority_xon_tx[i]);
1005                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1006                                    pf->stat_offsets_loaded,
1007                                    &osd->priority_xoff_tx[i],
1008                                    &nsd->priority_xoff_tx[i]);
1009                 i40e_stat_update32(hw,
1010                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1011                                    pf->stat_offsets_loaded,
1012                                    &osd->priority_xon_2_xoff[i],
1013                                    &nsd->priority_xon_2_xoff[i]);
1014         }
1015
1016         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1017                            I40E_GLPRT_PRC64L(hw->port),
1018                            pf->stat_offsets_loaded,
1019                            &osd->rx_size_64, &nsd->rx_size_64);
1020         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1021                            I40E_GLPRT_PRC127L(hw->port),
1022                            pf->stat_offsets_loaded,
1023                            &osd->rx_size_127, &nsd->rx_size_127);
1024         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1025                            I40E_GLPRT_PRC255L(hw->port),
1026                            pf->stat_offsets_loaded,
1027                            &osd->rx_size_255, &nsd->rx_size_255);
1028         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1029                            I40E_GLPRT_PRC511L(hw->port),
1030                            pf->stat_offsets_loaded,
1031                            &osd->rx_size_511, &nsd->rx_size_511);
1032         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1033                            I40E_GLPRT_PRC1023L(hw->port),
1034                            pf->stat_offsets_loaded,
1035                            &osd->rx_size_1023, &nsd->rx_size_1023);
1036         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1037                            I40E_GLPRT_PRC1522L(hw->port),
1038                            pf->stat_offsets_loaded,
1039                            &osd->rx_size_1522, &nsd->rx_size_1522);
1040         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1041                            I40E_GLPRT_PRC9522L(hw->port),
1042                            pf->stat_offsets_loaded,
1043                            &osd->rx_size_big, &nsd->rx_size_big);
1044
1045         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1046                            I40E_GLPRT_PTC64L(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->tx_size_64, &nsd->tx_size_64);
1049         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1050                            I40E_GLPRT_PTC127L(hw->port),
1051                            pf->stat_offsets_loaded,
1052                            &osd->tx_size_127, &nsd->tx_size_127);
1053         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1054                            I40E_GLPRT_PTC255L(hw->port),
1055                            pf->stat_offsets_loaded,
1056                            &osd->tx_size_255, &nsd->tx_size_255);
1057         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1058                            I40E_GLPRT_PTC511L(hw->port),
1059                            pf->stat_offsets_loaded,
1060                            &osd->tx_size_511, &nsd->tx_size_511);
1061         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1062                            I40E_GLPRT_PTC1023L(hw->port),
1063                            pf->stat_offsets_loaded,
1064                            &osd->tx_size_1023, &nsd->tx_size_1023);
1065         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1066                            I40E_GLPRT_PTC1522L(hw->port),
1067                            pf->stat_offsets_loaded,
1068                            &osd->tx_size_1522, &nsd->tx_size_1522);
1069         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1070                            I40E_GLPRT_PTC9522L(hw->port),
1071                            pf->stat_offsets_loaded,
1072                            &osd->tx_size_big, &nsd->tx_size_big);
1073
1074         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1075                            pf->stat_offsets_loaded,
1076                            &osd->rx_undersize, &nsd->rx_undersize);
1077         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1078                            pf->stat_offsets_loaded,
1079                            &osd->rx_fragments, &nsd->rx_fragments);
1080         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1081                            pf->stat_offsets_loaded,
1082                            &osd->rx_oversize, &nsd->rx_oversize);
1083         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1084                            pf->stat_offsets_loaded,
1085                            &osd->rx_jabber, &nsd->rx_jabber);
1086
1087         /* FDIR stats */
1088         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_atr_cnt_idx),
1089                            pf->stat_offsets_loaded,
1090                            &osd->fd_atr_match, &nsd->fd_atr_match);
1091         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_sb_cnt_idx),
1092                            pf->stat_offsets_loaded,
1093                            &osd->fd_sb_match, &nsd->fd_sb_match);
1094
1095         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1096         nsd->tx_lpi_status =
1097                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1098                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1099         nsd->rx_lpi_status =
1100                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1101                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1102         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1103                            pf->stat_offsets_loaded,
1104                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1105         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1106                            pf->stat_offsets_loaded,
1107                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1108
1109         pf->stat_offsets_loaded = true;
1110 }
1111
1112 /**
1113  * i40e_update_stats - Update the various statistics counters.
1114  * @vsi: the VSI to be updated
1115  *
1116  * Update the various stats for this VSI and its related entities.
1117  **/
1118 void i40e_update_stats(struct i40e_vsi *vsi)
1119 {
1120         struct i40e_pf *pf = vsi->back;
1121
1122         if (vsi == pf->vsi[pf->lan_vsi])
1123                 i40e_update_pf_stats(pf);
1124
1125         i40e_update_vsi_stats(vsi);
1126 #ifdef I40E_FCOE
1127         i40e_update_fcoe_stats(vsi);
1128 #endif
1129 }
1130
1131 /**
1132  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1133  * @vsi: the VSI to be searched
1134  * @macaddr: the MAC address
1135  * @vlan: the vlan
1136  * @is_vf: make sure its a vf filter, else doesn't matter
1137  * @is_netdev: make sure its a netdev filter, else doesn't matter
1138  *
1139  * Returns ptr to the filter object or NULL
1140  **/
1141 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1142                                                 u8 *macaddr, s16 vlan,
1143                                                 bool is_vf, bool is_netdev)
1144 {
1145         struct i40e_mac_filter *f;
1146
1147         if (!vsi || !macaddr)
1148                 return NULL;
1149
1150         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1151                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1152                     (vlan == f->vlan)    &&
1153                     (!is_vf || f->is_vf) &&
1154                     (!is_netdev || f->is_netdev))
1155                         return f;
1156         }
1157         return NULL;
1158 }
1159
1160 /**
1161  * i40e_find_mac - Find a mac addr in the macvlan filters list
1162  * @vsi: the VSI to be searched
1163  * @macaddr: the MAC address we are searching for
1164  * @is_vf: make sure its a vf filter, else doesn't matter
1165  * @is_netdev: make sure its a netdev filter, else doesn't matter
1166  *
1167  * Returns the first filter with the provided MAC address or NULL if
1168  * MAC address was not found
1169  **/
1170 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1171                                       bool is_vf, bool is_netdev)
1172 {
1173         struct i40e_mac_filter *f;
1174
1175         if (!vsi || !macaddr)
1176                 return NULL;
1177
1178         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1179                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1180                     (!is_vf || f->is_vf) &&
1181                     (!is_netdev || f->is_netdev))
1182                         return f;
1183         }
1184         return NULL;
1185 }
1186
1187 /**
1188  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1189  * @vsi: the VSI to be searched
1190  *
1191  * Returns true if VSI is in vlan mode or false otherwise
1192  **/
1193 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1194 {
1195         struct i40e_mac_filter *f;
1196
1197         /* Only -1 for all the filters denotes not in vlan mode
1198          * so we have to go through all the list in order to make sure
1199          */
1200         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1201                 if (f->vlan >= 0)
1202                         return true;
1203         }
1204
1205         return false;
1206 }
1207
1208 /**
1209  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1210  * @vsi: the VSI to be searched
1211  * @macaddr: the mac address to be filtered
1212  * @is_vf: true if it is a vf
1213  * @is_netdev: true if it is a netdev
1214  *
1215  * Goes through all the macvlan filters and adds a
1216  * macvlan filter for each unique vlan that already exists
1217  *
1218  * Returns first filter found on success, else NULL
1219  **/
1220 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1221                                              bool is_vf, bool is_netdev)
1222 {
1223         struct i40e_mac_filter *f;
1224
1225         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1226                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1227                                       is_vf, is_netdev)) {
1228                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1229                                              is_vf, is_netdev))
1230                                 return NULL;
1231                 }
1232         }
1233
1234         return list_first_entry_or_null(&vsi->mac_filter_list,
1235                                         struct i40e_mac_filter, list);
1236 }
1237
1238 /**
1239  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1240  * @vsi: the PF Main VSI - inappropriate for any other VSI
1241  * @macaddr: the MAC address
1242  **/
1243 static void i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1244 {
1245         struct i40e_aqc_remove_macvlan_element_data element;
1246         struct i40e_pf *pf = vsi->back;
1247         i40e_status aq_ret;
1248
1249         /* Only appropriate for the PF main VSI */
1250         if (vsi->type != I40E_VSI_MAIN)
1251                 return;
1252
1253         ether_addr_copy(element.mac_addr, macaddr);
1254         element.vlan_tag = 0;
1255         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1256                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1257         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1258         if (aq_ret)
1259                 dev_err(&pf->pdev->dev, "Could not remove default MAC-VLAN\n");
1260 }
1261
1262 /**
1263  * i40e_add_filter - Add a mac/vlan filter to the VSI
1264  * @vsi: the VSI to be searched
1265  * @macaddr: the MAC address
1266  * @vlan: the vlan
1267  * @is_vf: make sure its a vf filter, else doesn't matter
1268  * @is_netdev: make sure its a netdev filter, else doesn't matter
1269  *
1270  * Returns ptr to the filter object or NULL when no memory available.
1271  **/
1272 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1273                                         u8 *macaddr, s16 vlan,
1274                                         bool is_vf, bool is_netdev)
1275 {
1276         struct i40e_mac_filter *f;
1277
1278         if (!vsi || !macaddr)
1279                 return NULL;
1280
1281         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1282         if (!f) {
1283                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1284                 if (!f)
1285                         goto add_filter_out;
1286
1287                 ether_addr_copy(f->macaddr, macaddr);
1288                 f->vlan = vlan;
1289                 f->changed = true;
1290
1291                 INIT_LIST_HEAD(&f->list);
1292                 list_add(&f->list, &vsi->mac_filter_list);
1293         }
1294
1295         /* increment counter and add a new flag if needed */
1296         if (is_vf) {
1297                 if (!f->is_vf) {
1298                         f->is_vf = true;
1299                         f->counter++;
1300                 }
1301         } else if (is_netdev) {
1302                 if (!f->is_netdev) {
1303                         f->is_netdev = true;
1304                         f->counter++;
1305                 }
1306         } else {
1307                 f->counter++;
1308         }
1309
1310         /* changed tells sync_filters_subtask to
1311          * push the filter down to the firmware
1312          */
1313         if (f->changed) {
1314                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1315                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1316         }
1317
1318 add_filter_out:
1319         return f;
1320 }
1321
1322 /**
1323  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1324  * @vsi: the VSI to be searched
1325  * @macaddr: the MAC address
1326  * @vlan: the vlan
1327  * @is_vf: make sure it's a vf filter, else doesn't matter
1328  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1329  **/
1330 void i40e_del_filter(struct i40e_vsi *vsi,
1331                      u8 *macaddr, s16 vlan,
1332                      bool is_vf, bool is_netdev)
1333 {
1334         struct i40e_mac_filter *f;
1335
1336         if (!vsi || !macaddr)
1337                 return;
1338
1339         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1340         if (!f || f->counter == 0)
1341                 return;
1342
1343         if (is_vf) {
1344                 if (f->is_vf) {
1345                         f->is_vf = false;
1346                         f->counter--;
1347                 }
1348         } else if (is_netdev) {
1349                 if (f->is_netdev) {
1350                         f->is_netdev = false;
1351                         f->counter--;
1352                 }
1353         } else {
1354                 /* make sure we don't remove a filter in use by vf or netdev */
1355                 int min_f = 0;
1356                 min_f += (f->is_vf ? 1 : 0);
1357                 min_f += (f->is_netdev ? 1 : 0);
1358
1359                 if (f->counter > min_f)
1360                         f->counter--;
1361         }
1362
1363         /* counter == 0 tells sync_filters_subtask to
1364          * remove the filter from the firmware's list
1365          */
1366         if (f->counter == 0) {
1367                 f->changed = true;
1368                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1369                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1370         }
1371 }
1372
1373 /**
1374  * i40e_set_mac - NDO callback to set mac address
1375  * @netdev: network interface device structure
1376  * @p: pointer to an address structure
1377  *
1378  * Returns 0 on success, negative on failure
1379  **/
1380 #ifdef I40E_FCOE
1381 int i40e_set_mac(struct net_device *netdev, void *p)
1382 #else
1383 static int i40e_set_mac(struct net_device *netdev, void *p)
1384 #endif
1385 {
1386         struct i40e_netdev_priv *np = netdev_priv(netdev);
1387         struct i40e_vsi *vsi = np->vsi;
1388         struct sockaddr *addr = p;
1389         struct i40e_mac_filter *f;
1390
1391         if (!is_valid_ether_addr(addr->sa_data))
1392                 return -EADDRNOTAVAIL;
1393
1394         netdev_info(netdev, "set mac address=%pM\n", addr->sa_data);
1395
1396         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1397             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1398                 return -EADDRNOTAVAIL;
1399
1400         if (vsi->type == I40E_VSI_MAIN) {
1401                 i40e_status ret;
1402                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1403                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1404                                                 addr->sa_data, NULL);
1405                 if (ret) {
1406                         netdev_info(netdev,
1407                                     "Addr change for Main VSI failed: %d\n",
1408                                     ret);
1409                         return -EADDRNOTAVAIL;
1410                 }
1411         }
1412
1413         f = i40e_find_mac(vsi, addr->sa_data, false, true);
1414         if (!f) {
1415                 /* In order to be sure to not drop any packets, add the
1416                  * new address first then delete the old one.
1417                  */
1418                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1419                                     false, false);
1420                 if (!f)
1421                         return -ENOMEM;
1422
1423                 i40e_sync_vsi_filters(vsi);
1424                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1425                                 false, false);
1426                 i40e_sync_vsi_filters(vsi);
1427         }
1428
1429         f->is_laa = true;
1430         if (!ether_addr_equal(netdev->dev_addr, addr->sa_data))
1431                 ether_addr_copy(netdev->dev_addr, addr->sa_data);
1432
1433         return 0;
1434 }
1435
1436 /**
1437  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1438  * @vsi: the VSI being setup
1439  * @ctxt: VSI context structure
1440  * @enabled_tc: Enabled TCs bitmap
1441  * @is_add: True if called before Add VSI
1442  *
1443  * Setup VSI queue mapping for enabled traffic classes.
1444  **/
1445 #ifdef I40E_FCOE
1446 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1447                               struct i40e_vsi_context *ctxt,
1448                               u8 enabled_tc,
1449                               bool is_add)
1450 #else
1451 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1452                                      struct i40e_vsi_context *ctxt,
1453                                      u8 enabled_tc,
1454                                      bool is_add)
1455 #endif
1456 {
1457         struct i40e_pf *pf = vsi->back;
1458         u16 sections = 0;
1459         u8 netdev_tc = 0;
1460         u16 numtc = 0;
1461         u16 qcount;
1462         u8 offset;
1463         u16 qmap;
1464         int i;
1465         u16 num_tc_qps = 0;
1466
1467         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1468         offset = 0;
1469
1470         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1471                 /* Find numtc from enabled TC bitmap */
1472                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1473                         if (enabled_tc & (1 << i)) /* TC is enabled */
1474                                 numtc++;
1475                 }
1476                 if (!numtc) {
1477                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1478                         numtc = 1;
1479                 }
1480         } else {
1481                 /* At least TC0 is enabled in case of non-DCB case */
1482                 numtc = 1;
1483         }
1484
1485         vsi->tc_config.numtc = numtc;
1486         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1487         /* Number of queues per enabled TC */
1488         num_tc_qps = vsi->alloc_queue_pairs/numtc;
1489         num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
1490
1491         /* Setup queue offset/count for all TCs for given VSI */
1492         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1493                 /* See if the given TC is enabled for the given VSI */
1494                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1495                         int pow, num_qps;
1496
1497                         switch (vsi->type) {
1498                         case I40E_VSI_MAIN:
1499                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1500                                 break;
1501 #ifdef I40E_FCOE
1502                         case I40E_VSI_FCOE:
1503                                 qcount = num_tc_qps;
1504                                 break;
1505 #endif
1506                         case I40E_VSI_FDIR:
1507                         case I40E_VSI_SRIOV:
1508                         case I40E_VSI_VMDQ2:
1509                         default:
1510                                 qcount = num_tc_qps;
1511                                 WARN_ON(i != 0);
1512                                 break;
1513                         }
1514                         vsi->tc_config.tc_info[i].qoffset = offset;
1515                         vsi->tc_config.tc_info[i].qcount = qcount;
1516
1517                         /* find the power-of-2 of the number of queue pairs */
1518                         num_qps = qcount;
1519                         pow = 0;
1520                         while (num_qps && ((1 << pow) < qcount)) {
1521                                 pow++;
1522                                 num_qps >>= 1;
1523                         }
1524
1525                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1526                         qmap =
1527                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1528                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1529
1530                         offset += qcount;
1531                 } else {
1532                         /* TC is not enabled so set the offset to
1533                          * default queue and allocate one queue
1534                          * for the given TC.
1535                          */
1536                         vsi->tc_config.tc_info[i].qoffset = 0;
1537                         vsi->tc_config.tc_info[i].qcount = 1;
1538                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1539
1540                         qmap = 0;
1541                 }
1542                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1543         }
1544
1545         /* Set actual Tx/Rx queue pairs */
1546         vsi->num_queue_pairs = offset;
1547
1548         /* Scheduler section valid can only be set for ADD VSI */
1549         if (is_add) {
1550                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1551
1552                 ctxt->info.up_enable_bits = enabled_tc;
1553         }
1554         if (vsi->type == I40E_VSI_SRIOV) {
1555                 ctxt->info.mapping_flags |=
1556                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1557                 for (i = 0; i < vsi->num_queue_pairs; i++)
1558                         ctxt->info.queue_mapping[i] =
1559                                                cpu_to_le16(vsi->base_queue + i);
1560         } else {
1561                 ctxt->info.mapping_flags |=
1562                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1563                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1564         }
1565         ctxt->info.valid_sections |= cpu_to_le16(sections);
1566 }
1567
1568 /**
1569  * i40e_set_rx_mode - NDO callback to set the netdev filters
1570  * @netdev: network interface device structure
1571  **/
1572 #ifdef I40E_FCOE
1573 void i40e_set_rx_mode(struct net_device *netdev)
1574 #else
1575 static void i40e_set_rx_mode(struct net_device *netdev)
1576 #endif
1577 {
1578         struct i40e_netdev_priv *np = netdev_priv(netdev);
1579         struct i40e_mac_filter *f, *ftmp;
1580         struct i40e_vsi *vsi = np->vsi;
1581         struct netdev_hw_addr *uca;
1582         struct netdev_hw_addr *mca;
1583         struct netdev_hw_addr *ha;
1584
1585         /* add addr if not already in the filter list */
1586         netdev_for_each_uc_addr(uca, netdev) {
1587                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1588                         if (i40e_is_vsi_in_vlan(vsi))
1589                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1590                                                      false, true);
1591                         else
1592                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1593                                                 false, true);
1594                 }
1595         }
1596
1597         netdev_for_each_mc_addr(mca, netdev) {
1598                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1599                         if (i40e_is_vsi_in_vlan(vsi))
1600                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1601                                                      false, true);
1602                         else
1603                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1604                                                 false, true);
1605                 }
1606         }
1607
1608         /* remove filter if not in netdev list */
1609         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1610                 bool found = false;
1611
1612                 if (!f->is_netdev)
1613                         continue;
1614
1615                 if (is_multicast_ether_addr(f->macaddr)) {
1616                         netdev_for_each_mc_addr(mca, netdev) {
1617                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1618                                         found = true;
1619                                         break;
1620                                 }
1621                         }
1622                 } else {
1623                         netdev_for_each_uc_addr(uca, netdev) {
1624                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1625                                         found = true;
1626                                         break;
1627                                 }
1628                         }
1629
1630                         for_each_dev_addr(netdev, ha) {
1631                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1632                                         found = true;
1633                                         break;
1634                                 }
1635                         }
1636                 }
1637                 if (!found)
1638                         i40e_del_filter(
1639                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1640         }
1641
1642         /* check for other flag changes */
1643         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1644                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1645                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1646         }
1647 }
1648
1649 /**
1650  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1651  * @vsi: ptr to the VSI
1652  *
1653  * Push any outstanding VSI filter changes through the AdminQ.
1654  *
1655  * Returns 0 or error value
1656  **/
1657 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1658 {
1659         struct i40e_mac_filter *f, *ftmp;
1660         bool promisc_forced_on = false;
1661         bool add_happened = false;
1662         int filter_list_len = 0;
1663         u32 changed_flags = 0;
1664         i40e_status aq_ret = 0;
1665         struct i40e_pf *pf;
1666         int num_add = 0;
1667         int num_del = 0;
1668         u16 cmd_flags;
1669
1670         /* empty array typed pointers, kcalloc later */
1671         struct i40e_aqc_add_macvlan_element_data *add_list;
1672         struct i40e_aqc_remove_macvlan_element_data *del_list;
1673
1674         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1675                 usleep_range(1000, 2000);
1676         pf = vsi->back;
1677
1678         if (vsi->netdev) {
1679                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1680                 vsi->current_netdev_flags = vsi->netdev->flags;
1681         }
1682
1683         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1684                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1685
1686                 filter_list_len = pf->hw.aq.asq_buf_size /
1687                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1688                 del_list = kcalloc(filter_list_len,
1689                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1690                             GFP_KERNEL);
1691                 if (!del_list)
1692                         return -ENOMEM;
1693
1694                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1695                         if (!f->changed)
1696                                 continue;
1697
1698                         if (f->counter != 0)
1699                                 continue;
1700                         f->changed = false;
1701                         cmd_flags = 0;
1702
1703                         /* add to delete list */
1704                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1705                         del_list[num_del].vlan_tag =
1706                                 cpu_to_le16((u16)(f->vlan ==
1707                                             I40E_VLAN_ANY ? 0 : f->vlan));
1708
1709                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1710                         del_list[num_del].flags = cmd_flags;
1711                         num_del++;
1712
1713                         /* unlink from filter list */
1714                         list_del(&f->list);
1715                         kfree(f);
1716
1717                         /* flush a full buffer */
1718                         if (num_del == filter_list_len) {
1719                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1720                                             vsi->seid, del_list, num_del,
1721                                             NULL);
1722                                 num_del = 0;
1723                                 memset(del_list, 0, sizeof(*del_list));
1724
1725                                 if (aq_ret &&
1726                                     pf->hw.aq.asq_last_status !=
1727                                                               I40E_AQ_RC_ENOENT)
1728                                         dev_info(&pf->pdev->dev,
1729                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1730                                                  aq_ret,
1731                                                  pf->hw.aq.asq_last_status);
1732                         }
1733                 }
1734                 if (num_del) {
1735                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1736                                                      del_list, num_del, NULL);
1737                         num_del = 0;
1738
1739                         if (aq_ret &&
1740                             pf->hw.aq.asq_last_status != I40E_AQ_RC_ENOENT)
1741                                 dev_info(&pf->pdev->dev,
1742                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1743                                          aq_ret, pf->hw.aq.asq_last_status);
1744                 }
1745
1746                 kfree(del_list);
1747                 del_list = NULL;
1748
1749                 /* do all the adds now */
1750                 filter_list_len = pf->hw.aq.asq_buf_size /
1751                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1752                 add_list = kcalloc(filter_list_len,
1753                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1754                                GFP_KERNEL);
1755                 if (!add_list)
1756                         return -ENOMEM;
1757
1758                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1759                         if (!f->changed)
1760                                 continue;
1761
1762                         if (f->counter == 0)
1763                                 continue;
1764                         f->changed = false;
1765                         add_happened = true;
1766                         cmd_flags = 0;
1767
1768                         /* add to add array */
1769                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1770                         add_list[num_add].vlan_tag =
1771                                 cpu_to_le16(
1772                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1773                         add_list[num_add].queue_number = 0;
1774
1775                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1776                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1777                         num_add++;
1778
1779                         /* flush a full buffer */
1780                         if (num_add == filter_list_len) {
1781                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1782                                                              add_list, num_add,
1783                                                              NULL);
1784                                 num_add = 0;
1785
1786                                 if (aq_ret)
1787                                         break;
1788                                 memset(add_list, 0, sizeof(*add_list));
1789                         }
1790                 }
1791                 if (num_add) {
1792                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1793                                                      add_list, num_add, NULL);
1794                         num_add = 0;
1795                 }
1796                 kfree(add_list);
1797                 add_list = NULL;
1798
1799                 if (add_happened && (!aq_ret)) {
1800                         /* do nothing */;
1801                 } else if (add_happened && (aq_ret)) {
1802                         dev_info(&pf->pdev->dev,
1803                                  "add filter failed, err %d, aq_err %d\n",
1804                                  aq_ret, pf->hw.aq.asq_last_status);
1805                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1806                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1807                                       &vsi->state)) {
1808                                 promisc_forced_on = true;
1809                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1810                                         &vsi->state);
1811                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1812                         }
1813                 }
1814         }
1815
1816         /* check for changes in promiscuous modes */
1817         if (changed_flags & IFF_ALLMULTI) {
1818                 bool cur_multipromisc;
1819                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1820                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1821                                                                vsi->seid,
1822                                                                cur_multipromisc,
1823                                                                NULL);
1824                 if (aq_ret)
1825                         dev_info(&pf->pdev->dev,
1826                                  "set multi promisc failed, err %d, aq_err %d\n",
1827                                  aq_ret, pf->hw.aq.asq_last_status);
1828         }
1829         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1830                 bool cur_promisc;
1831                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1832                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1833                                         &vsi->state));
1834                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1835                                                              vsi->seid,
1836                                                              cur_promisc, NULL);
1837                 if (aq_ret)
1838                         dev_info(&pf->pdev->dev,
1839                                  "set uni promisc failed, err %d, aq_err %d\n",
1840                                  aq_ret, pf->hw.aq.asq_last_status);
1841                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1842                                                    vsi->seid,
1843                                                    cur_promisc, NULL);
1844                 if (aq_ret)
1845                         dev_info(&pf->pdev->dev,
1846                                  "set brdcast promisc failed, err %d, aq_err %d\n",
1847                                  aq_ret, pf->hw.aq.asq_last_status);
1848         }
1849
1850         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1851         return 0;
1852 }
1853
1854 /**
1855  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1856  * @pf: board private structure
1857  **/
1858 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1859 {
1860         int v;
1861
1862         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1863                 return;
1864         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1865
1866         for (v = 0; v < pf->num_alloc_vsi; v++) {
1867                 if (pf->vsi[v] &&
1868                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1869                         i40e_sync_vsi_filters(pf->vsi[v]);
1870         }
1871 }
1872
1873 /**
1874  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1875  * @netdev: network interface device structure
1876  * @new_mtu: new value for maximum frame size
1877  *
1878  * Returns 0 on success, negative on failure
1879  **/
1880 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1881 {
1882         struct i40e_netdev_priv *np = netdev_priv(netdev);
1883         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1884         struct i40e_vsi *vsi = np->vsi;
1885
1886         /* MTU < 68 is an error and causes problems on some kernels */
1887         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1888                 return -EINVAL;
1889
1890         netdev_info(netdev, "changing MTU from %d to %d\n",
1891                     netdev->mtu, new_mtu);
1892         netdev->mtu = new_mtu;
1893         if (netif_running(netdev))
1894                 i40e_vsi_reinit_locked(vsi);
1895
1896         return 0;
1897 }
1898
1899 /**
1900  * i40e_ioctl - Access the hwtstamp interface
1901  * @netdev: network interface device structure
1902  * @ifr: interface request data
1903  * @cmd: ioctl command
1904  **/
1905 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1906 {
1907         struct i40e_netdev_priv *np = netdev_priv(netdev);
1908         struct i40e_pf *pf = np->vsi->back;
1909
1910         switch (cmd) {
1911         case SIOCGHWTSTAMP:
1912                 return i40e_ptp_get_ts_config(pf, ifr);
1913         case SIOCSHWTSTAMP:
1914                 return i40e_ptp_set_ts_config(pf, ifr);
1915         default:
1916                 return -EOPNOTSUPP;
1917         }
1918 }
1919
1920 /**
1921  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1922  * @vsi: the vsi being adjusted
1923  **/
1924 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1925 {
1926         struct i40e_vsi_context ctxt;
1927         i40e_status ret;
1928
1929         if ((vsi->info.valid_sections &
1930              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1931             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1932                 return;  /* already enabled */
1933
1934         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1935         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1936                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1937
1938         ctxt.seid = vsi->seid;
1939         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1940         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1941         if (ret) {
1942                 dev_info(&vsi->back->pdev->dev,
1943                          "%s: update vsi failed, aq_err=%d\n",
1944                          __func__, vsi->back->hw.aq.asq_last_status);
1945         }
1946 }
1947
1948 /**
1949  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1950  * @vsi: the vsi being adjusted
1951  **/
1952 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1953 {
1954         struct i40e_vsi_context ctxt;
1955         i40e_status ret;
1956
1957         if ((vsi->info.valid_sections &
1958              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1959             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1960              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1961                 return;  /* already disabled */
1962
1963         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1964         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1965                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1966
1967         ctxt.seid = vsi->seid;
1968         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1969         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1970         if (ret) {
1971                 dev_info(&vsi->back->pdev->dev,
1972                          "%s: update vsi failed, aq_err=%d\n",
1973                          __func__, vsi->back->hw.aq.asq_last_status);
1974         }
1975 }
1976
1977 /**
1978  * i40e_vlan_rx_register - Setup or shutdown vlan offload
1979  * @netdev: network interface to be adjusted
1980  * @features: netdev features to test if VLAN offload is enabled or not
1981  **/
1982 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
1983 {
1984         struct i40e_netdev_priv *np = netdev_priv(netdev);
1985         struct i40e_vsi *vsi = np->vsi;
1986
1987         if (features & NETIF_F_HW_VLAN_CTAG_RX)
1988                 i40e_vlan_stripping_enable(vsi);
1989         else
1990                 i40e_vlan_stripping_disable(vsi);
1991 }
1992
1993 /**
1994  * i40e_vsi_add_vlan - Add vsi membership for given vlan
1995  * @vsi: the vsi being configured
1996  * @vid: vlan id to be added (0 = untagged only , -1 = any)
1997  **/
1998 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
1999 {
2000         struct i40e_mac_filter *f, *add_f;
2001         bool is_netdev, is_vf;
2002
2003         is_vf = (vsi->type == I40E_VSI_SRIOV);
2004         is_netdev = !!(vsi->netdev);
2005
2006         if (is_netdev) {
2007                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2008                                         is_vf, is_netdev);
2009                 if (!add_f) {
2010                         dev_info(&vsi->back->pdev->dev,
2011                                  "Could not add vlan filter %d for %pM\n",
2012                                  vid, vsi->netdev->dev_addr);
2013                         return -ENOMEM;
2014                 }
2015         }
2016
2017         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2018                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2019                 if (!add_f) {
2020                         dev_info(&vsi->back->pdev->dev,
2021                                  "Could not add vlan filter %d for %pM\n",
2022                                  vid, f->macaddr);
2023                         return -ENOMEM;
2024                 }
2025         }
2026
2027         /* Now if we add a vlan tag, make sure to check if it is the first
2028          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2029          * with 0, so we now accept untagged and specified tagged traffic
2030          * (and not any taged and untagged)
2031          */
2032         if (vid > 0) {
2033                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2034                                                   I40E_VLAN_ANY,
2035                                                   is_vf, is_netdev)) {
2036                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2037                                         I40E_VLAN_ANY, is_vf, is_netdev);
2038                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2039                                                 is_vf, is_netdev);
2040                         if (!add_f) {
2041                                 dev_info(&vsi->back->pdev->dev,
2042                                          "Could not add filter 0 for %pM\n",
2043                                          vsi->netdev->dev_addr);
2044                                 return -ENOMEM;
2045                         }
2046                 }
2047         }
2048
2049         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2050         if (vid > 0 && !vsi->info.pvid) {
2051                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2052                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2053                                              is_vf, is_netdev)) {
2054                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2055                                                 is_vf, is_netdev);
2056                                 add_f = i40e_add_filter(vsi, f->macaddr,
2057                                                         0, is_vf, is_netdev);
2058                                 if (!add_f) {
2059                                         dev_info(&vsi->back->pdev->dev,
2060                                                  "Could not add filter 0 for %pM\n",
2061                                                  f->macaddr);
2062                                         return -ENOMEM;
2063                                 }
2064                         }
2065                 }
2066         }
2067
2068         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2069             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2070                 return 0;
2071
2072         return i40e_sync_vsi_filters(vsi);
2073 }
2074
2075 /**
2076  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2077  * @vsi: the vsi being configured
2078  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2079  *
2080  * Return: 0 on success or negative otherwise
2081  **/
2082 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2083 {
2084         struct net_device *netdev = vsi->netdev;
2085         struct i40e_mac_filter *f, *add_f;
2086         bool is_vf, is_netdev;
2087         int filter_count = 0;
2088
2089         is_vf = (vsi->type == I40E_VSI_SRIOV);
2090         is_netdev = !!(netdev);
2091
2092         if (is_netdev)
2093                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2094
2095         list_for_each_entry(f, &vsi->mac_filter_list, list)
2096                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2097
2098         /* go through all the filters for this VSI and if there is only
2099          * vid == 0 it means there are no other filters, so vid 0 must
2100          * be replaced with -1. This signifies that we should from now
2101          * on accept any traffic (with any tag present, or untagged)
2102          */
2103         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2104                 if (is_netdev) {
2105                         if (f->vlan &&
2106                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2107                                 filter_count++;
2108                 }
2109
2110                 if (f->vlan)
2111                         filter_count++;
2112         }
2113
2114         if (!filter_count && is_netdev) {
2115                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2116                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2117                                     is_vf, is_netdev);
2118                 if (!f) {
2119                         dev_info(&vsi->back->pdev->dev,
2120                                  "Could not add filter %d for %pM\n",
2121                                  I40E_VLAN_ANY, netdev->dev_addr);
2122                         return -ENOMEM;
2123                 }
2124         }
2125
2126         if (!filter_count) {
2127                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2128                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2129                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2130                                             is_vf, is_netdev);
2131                         if (!add_f) {
2132                                 dev_info(&vsi->back->pdev->dev,
2133                                          "Could not add filter %d for %pM\n",
2134                                          I40E_VLAN_ANY, f->macaddr);
2135                                 return -ENOMEM;
2136                         }
2137                 }
2138         }
2139
2140         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2141             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2142                 return 0;
2143
2144         return i40e_sync_vsi_filters(vsi);
2145 }
2146
2147 /**
2148  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2149  * @netdev: network interface to be adjusted
2150  * @vid: vlan id to be added
2151  *
2152  * net_device_ops implementation for adding vlan ids
2153  **/
2154 #ifdef I40E_FCOE
2155 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2156                          __always_unused __be16 proto, u16 vid)
2157 #else
2158 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2159                                 __always_unused __be16 proto, u16 vid)
2160 #endif
2161 {
2162         struct i40e_netdev_priv *np = netdev_priv(netdev);
2163         struct i40e_vsi *vsi = np->vsi;
2164         int ret = 0;
2165
2166         if (vid > 4095)
2167                 return -EINVAL;
2168
2169         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2170
2171         /* If the network stack called us with vid = 0 then
2172          * it is asking to receive priority tagged packets with
2173          * vlan id 0.  Our HW receives them by default when configured
2174          * to receive untagged packets so there is no need to add an
2175          * extra filter for vlan 0 tagged packets.
2176          */
2177         if (vid)
2178                 ret = i40e_vsi_add_vlan(vsi, vid);
2179
2180         if (!ret && (vid < VLAN_N_VID))
2181                 set_bit(vid, vsi->active_vlans);
2182
2183         return ret;
2184 }
2185
2186 /**
2187  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2188  * @netdev: network interface to be adjusted
2189  * @vid: vlan id to be removed
2190  *
2191  * net_device_ops implementation for removing vlan ids
2192  **/
2193 #ifdef I40E_FCOE
2194 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2195                           __always_unused __be16 proto, u16 vid)
2196 #else
2197 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2198                                  __always_unused __be16 proto, u16 vid)
2199 #endif
2200 {
2201         struct i40e_netdev_priv *np = netdev_priv(netdev);
2202         struct i40e_vsi *vsi = np->vsi;
2203
2204         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2205
2206         /* return code is ignored as there is nothing a user
2207          * can do about failure to remove and a log message was
2208          * already printed from the other function
2209          */
2210         i40e_vsi_kill_vlan(vsi, vid);
2211
2212         clear_bit(vid, vsi->active_vlans);
2213
2214         return 0;
2215 }
2216
2217 /**
2218  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2219  * @vsi: the vsi being brought back up
2220  **/
2221 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2222 {
2223         u16 vid;
2224
2225         if (!vsi->netdev)
2226                 return;
2227
2228         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2229
2230         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2231                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2232                                      vid);
2233 }
2234
2235 /**
2236  * i40e_vsi_add_pvid - Add pvid for the VSI
2237  * @vsi: the vsi being adjusted
2238  * @vid: the vlan id to set as a PVID
2239  **/
2240 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2241 {
2242         struct i40e_vsi_context ctxt;
2243         i40e_status aq_ret;
2244
2245         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2246         vsi->info.pvid = cpu_to_le16(vid);
2247         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2248                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2249                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2250
2251         ctxt.seid = vsi->seid;
2252         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2253         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2254         if (aq_ret) {
2255                 dev_info(&vsi->back->pdev->dev,
2256                          "%s: update vsi failed, aq_err=%d\n",
2257                          __func__, vsi->back->hw.aq.asq_last_status);
2258                 return -ENOENT;
2259         }
2260
2261         return 0;
2262 }
2263
2264 /**
2265  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2266  * @vsi: the vsi being adjusted
2267  *
2268  * Just use the vlan_rx_register() service to put it back to normal
2269  **/
2270 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2271 {
2272         i40e_vlan_stripping_disable(vsi);
2273
2274         vsi->info.pvid = 0;
2275 }
2276
2277 /**
2278  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2279  * @vsi: ptr to the VSI
2280  *
2281  * If this function returns with an error, then it's possible one or
2282  * more of the rings is populated (while the rest are not).  It is the
2283  * callers duty to clean those orphaned rings.
2284  *
2285  * Return 0 on success, negative on failure
2286  **/
2287 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2288 {
2289         int i, err = 0;
2290
2291         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2292                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2293
2294         return err;
2295 }
2296
2297 /**
2298  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2299  * @vsi: ptr to the VSI
2300  *
2301  * Free VSI's transmit software resources
2302  **/
2303 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2304 {
2305         int i;
2306
2307         if (!vsi->tx_rings)
2308                 return;
2309
2310         for (i = 0; i < vsi->num_queue_pairs; i++)
2311                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2312                         i40e_free_tx_resources(vsi->tx_rings[i]);
2313 }
2314
2315 /**
2316  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2317  * @vsi: ptr to the VSI
2318  *
2319  * If this function returns with an error, then it's possible one or
2320  * more of the rings is populated (while the rest are not).  It is the
2321  * callers duty to clean those orphaned rings.
2322  *
2323  * Return 0 on success, negative on failure
2324  **/
2325 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2326 {
2327         int i, err = 0;
2328
2329         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2330                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2331 #ifdef I40E_FCOE
2332         i40e_fcoe_setup_ddp_resources(vsi);
2333 #endif
2334         return err;
2335 }
2336
2337 /**
2338  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2339  * @vsi: ptr to the VSI
2340  *
2341  * Free all receive software resources
2342  **/
2343 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2344 {
2345         int i;
2346
2347         if (!vsi->rx_rings)
2348                 return;
2349
2350         for (i = 0; i < vsi->num_queue_pairs; i++)
2351                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2352                         i40e_free_rx_resources(vsi->rx_rings[i]);
2353 #ifdef I40E_FCOE
2354         i40e_fcoe_free_ddp_resources(vsi);
2355 #endif
2356 }
2357
2358 /**
2359  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2360  * @ring: The Tx ring to configure
2361  *
2362  * Configure the Tx descriptor ring in the HMC context.
2363  **/
2364 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2365 {
2366         struct i40e_vsi *vsi = ring->vsi;
2367         u16 pf_q = vsi->base_queue + ring->queue_index;
2368         struct i40e_hw *hw = &vsi->back->hw;
2369         struct i40e_hmc_obj_txq tx_ctx;
2370         i40e_status err = 0;
2371         u32 qtx_ctl = 0;
2372
2373         /* some ATR related tx ring init */
2374         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2375                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2376                 ring->atr_count = 0;
2377         } else {
2378                 ring->atr_sample_rate = 0;
2379         }
2380
2381         /* initialize XPS */
2382         if (ring->q_vector && ring->netdev &&
2383             vsi->tc_config.numtc <= 1 &&
2384             !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2385                 netif_set_xps_queue(ring->netdev,
2386                                     &ring->q_vector->affinity_mask,
2387                                     ring->queue_index);
2388
2389         /* clear the context structure first */
2390         memset(&tx_ctx, 0, sizeof(tx_ctx));
2391
2392         tx_ctx.new_context = 1;
2393         tx_ctx.base = (ring->dma / 128);
2394         tx_ctx.qlen = ring->count;
2395         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2396                                                I40E_FLAG_FD_ATR_ENABLED));
2397 #ifdef I40E_FCOE
2398         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2399 #endif
2400         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2401         /* FDIR VSI tx ring can still use RS bit and writebacks */
2402         if (vsi->type != I40E_VSI_FDIR)
2403                 tx_ctx.head_wb_ena = 1;
2404         tx_ctx.head_wb_addr = ring->dma +
2405                               (ring->count * sizeof(struct i40e_tx_desc));
2406
2407         /* As part of VSI creation/update, FW allocates certain
2408          * Tx arbitration queue sets for each TC enabled for
2409          * the VSI. The FW returns the handles to these queue
2410          * sets as part of the response buffer to Add VSI,
2411          * Update VSI, etc. AQ commands. It is expected that
2412          * these queue set handles be associated with the Tx
2413          * queues by the driver as part of the TX queue context
2414          * initialization. This has to be done regardless of
2415          * DCB as by default everything is mapped to TC0.
2416          */
2417         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2418         tx_ctx.rdylist_act = 0;
2419
2420         /* clear the context in the HMC */
2421         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2422         if (err) {
2423                 dev_info(&vsi->back->pdev->dev,
2424                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2425                          ring->queue_index, pf_q, err);
2426                 return -ENOMEM;
2427         }
2428
2429         /* set the context in the HMC */
2430         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2431         if (err) {
2432                 dev_info(&vsi->back->pdev->dev,
2433                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2434                          ring->queue_index, pf_q, err);
2435                 return -ENOMEM;
2436         }
2437
2438         /* Now associate this queue with this PCI function */
2439         if (vsi->type == I40E_VSI_VMDQ2)
2440                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2441         else
2442                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2443         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2444                     I40E_QTX_CTL_PF_INDX_MASK);
2445         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2446         i40e_flush(hw);
2447
2448         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2449
2450         /* cache tail off for easier writes later */
2451         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2452
2453         return 0;
2454 }
2455
2456 /**
2457  * i40e_configure_rx_ring - Configure a receive ring context
2458  * @ring: The Rx ring to configure
2459  *
2460  * Configure the Rx descriptor ring in the HMC context.
2461  **/
2462 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2463 {
2464         struct i40e_vsi *vsi = ring->vsi;
2465         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2466         u16 pf_q = vsi->base_queue + ring->queue_index;
2467         struct i40e_hw *hw = &vsi->back->hw;
2468         struct i40e_hmc_obj_rxq rx_ctx;
2469         i40e_status err = 0;
2470
2471         ring->state = 0;
2472
2473         /* clear the context structure first */
2474         memset(&rx_ctx, 0, sizeof(rx_ctx));
2475
2476         ring->rx_buf_len = vsi->rx_buf_len;
2477         ring->rx_hdr_len = vsi->rx_hdr_len;
2478
2479         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2480         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2481
2482         rx_ctx.base = (ring->dma / 128);
2483         rx_ctx.qlen = ring->count;
2484
2485         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2486                 set_ring_16byte_desc_enabled(ring);
2487                 rx_ctx.dsize = 0;
2488         } else {
2489                 rx_ctx.dsize = 1;
2490         }
2491
2492         rx_ctx.dtype = vsi->dtype;
2493         if (vsi->dtype) {
2494                 set_ring_ps_enabled(ring);
2495                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2496                                   I40E_RX_SPLIT_IP      |
2497                                   I40E_RX_SPLIT_TCP_UDP |
2498                                   I40E_RX_SPLIT_SCTP;
2499         } else {
2500                 rx_ctx.hsplit_0 = 0;
2501         }
2502
2503         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2504                                   (chain_len * ring->rx_buf_len));
2505         if (hw->revision_id == 0)
2506                 rx_ctx.lrxqthresh = 0;
2507         else
2508                 rx_ctx.lrxqthresh = 2;
2509         rx_ctx.crcstrip = 1;
2510         rx_ctx.l2tsel = 1;
2511         rx_ctx.showiv = 1;
2512 #ifdef I40E_FCOE
2513         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2514 #endif
2515         /* set the prefena field to 1 because the manual says to */
2516         rx_ctx.prefena = 1;
2517
2518         /* clear the context in the HMC */
2519         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2520         if (err) {
2521                 dev_info(&vsi->back->pdev->dev,
2522                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2523                          ring->queue_index, pf_q, err);
2524                 return -ENOMEM;
2525         }
2526
2527         /* set the context in the HMC */
2528         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2529         if (err) {
2530                 dev_info(&vsi->back->pdev->dev,
2531                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2532                          ring->queue_index, pf_q, err);
2533                 return -ENOMEM;
2534         }
2535
2536         /* cache tail for quicker writes, and clear the reg before use */
2537         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2538         writel(0, ring->tail);
2539
2540         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2541
2542         return 0;
2543 }
2544
2545 /**
2546  * i40e_vsi_configure_tx - Configure the VSI for Tx
2547  * @vsi: VSI structure describing this set of rings and resources
2548  *
2549  * Configure the Tx VSI for operation.
2550  **/
2551 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2552 {
2553         int err = 0;
2554         u16 i;
2555
2556         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2557                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2558
2559         return err;
2560 }
2561
2562 /**
2563  * i40e_vsi_configure_rx - Configure the VSI for Rx
2564  * @vsi: the VSI being configured
2565  *
2566  * Configure the Rx VSI for operation.
2567  **/
2568 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2569 {
2570         int err = 0;
2571         u16 i;
2572
2573         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2574                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2575                                + ETH_FCS_LEN + VLAN_HLEN;
2576         else
2577                 vsi->max_frame = I40E_RXBUFFER_2048;
2578
2579         /* figure out correct receive buffer length */
2580         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2581                                     I40E_FLAG_RX_PS_ENABLED)) {
2582         case I40E_FLAG_RX_1BUF_ENABLED:
2583                 vsi->rx_hdr_len = 0;
2584                 vsi->rx_buf_len = vsi->max_frame;
2585                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2586                 break;
2587         case I40E_FLAG_RX_PS_ENABLED:
2588                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2589                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2590                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2591                 break;
2592         default:
2593                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2594                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2595                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2596                 break;
2597         }
2598
2599 #ifdef I40E_FCOE
2600         /* setup rx buffer for FCoE */
2601         if ((vsi->type == I40E_VSI_FCOE) &&
2602             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2603                 vsi->rx_hdr_len = 0;
2604                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2605                 vsi->max_frame = I40E_RXBUFFER_3072;
2606                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2607         }
2608
2609 #endif /* I40E_FCOE */
2610         /* round up for the chip's needs */
2611         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2612                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2613         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2614                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2615
2616         /* set up individual rings */
2617         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2618                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2619
2620         return err;
2621 }
2622
2623 /**
2624  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2625  * @vsi: ptr to the VSI
2626  **/
2627 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2628 {
2629         struct i40e_ring *tx_ring, *rx_ring;
2630         u16 qoffset, qcount;
2631         int i, n;
2632
2633         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2634                 return;
2635
2636         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2637                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2638                         continue;
2639
2640                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2641                 qcount = vsi->tc_config.tc_info[n].qcount;
2642                 for (i = qoffset; i < (qoffset + qcount); i++) {
2643                         rx_ring = vsi->rx_rings[i];
2644                         tx_ring = vsi->tx_rings[i];
2645                         rx_ring->dcb_tc = n;
2646                         tx_ring->dcb_tc = n;
2647                 }
2648         }
2649 }
2650
2651 /**
2652  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2653  * @vsi: ptr to the VSI
2654  **/
2655 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2656 {
2657         if (vsi->netdev)
2658                 i40e_set_rx_mode(vsi->netdev);
2659 }
2660
2661 /**
2662  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2663  * @vsi: Pointer to the targeted VSI
2664  *
2665  * This function replays the hlist on the hw where all the SB Flow Director
2666  * filters were saved.
2667  **/
2668 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2669 {
2670         struct i40e_fdir_filter *filter;
2671         struct i40e_pf *pf = vsi->back;
2672         struct hlist_node *node;
2673
2674         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2675                 return;
2676
2677         hlist_for_each_entry_safe(filter, node,
2678                                   &pf->fdir_filter_list, fdir_node) {
2679                 i40e_add_del_fdir(vsi, filter, true);
2680         }
2681 }
2682
2683 /**
2684  * i40e_vsi_configure - Set up the VSI for action
2685  * @vsi: the VSI being configured
2686  **/
2687 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2688 {
2689         int err;
2690
2691         i40e_set_vsi_rx_mode(vsi);
2692         i40e_restore_vlan(vsi);
2693         i40e_vsi_config_dcb_rings(vsi);
2694         err = i40e_vsi_configure_tx(vsi);
2695         if (!err)
2696                 err = i40e_vsi_configure_rx(vsi);
2697
2698         return err;
2699 }
2700
2701 /**
2702  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2703  * @vsi: the VSI being configured
2704  **/
2705 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2706 {
2707         struct i40e_pf *pf = vsi->back;
2708         struct i40e_q_vector *q_vector;
2709         struct i40e_hw *hw = &pf->hw;
2710         u16 vector;
2711         int i, q;
2712         u32 val;
2713         u32 qp;
2714
2715         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2716          * and PFINT_LNKLSTn registers, e.g.:
2717          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2718          */
2719         qp = vsi->base_queue;
2720         vector = vsi->base_vector;
2721         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2722                 q_vector = vsi->q_vectors[i];
2723                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2724                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2725                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2726                      q_vector->rx.itr);
2727                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2728                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2729                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2730                      q_vector->tx.itr);
2731
2732                 /* Linked list for the queuepairs assigned to this vector */
2733                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2734                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2735                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2736                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2737                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2738                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2739                               (I40E_QUEUE_TYPE_TX
2740                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2741
2742                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2743
2744                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2745                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2746                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2747                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2748                               (I40E_QUEUE_TYPE_RX
2749                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2750
2751                         /* Terminate the linked list */
2752                         if (q == (q_vector->num_ringpairs - 1))
2753                                 val |= (I40E_QUEUE_END_OF_LIST
2754                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2755
2756                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2757                         qp++;
2758                 }
2759         }
2760
2761         i40e_flush(hw);
2762 }
2763
2764 /**
2765  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2766  * @hw: ptr to the hardware info
2767  **/
2768 static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
2769 {
2770         u32 val;
2771
2772         /* clear things first */
2773         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2774         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2775
2776         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2777               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2778               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2779               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2780               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2781               I40E_PFINT_ICR0_ENA_TIMESYNC_MASK      |
2782               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2783               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2784               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2785
2786         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2787
2788         /* SW_ITR_IDX = 0, but don't change INTENA */
2789         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2790                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2791
2792         /* OTHER_ITR_IDX = 0 */
2793         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2794 }
2795
2796 /**
2797  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2798  * @vsi: the VSI being configured
2799  **/
2800 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2801 {
2802         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2803         struct i40e_pf *pf = vsi->back;
2804         struct i40e_hw *hw = &pf->hw;
2805         u32 val;
2806
2807         /* set the ITR configuration */
2808         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2809         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2810         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2811         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2812         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2813         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2814
2815         i40e_enable_misc_int_causes(hw);
2816
2817         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2818         wr32(hw, I40E_PFINT_LNKLST0, 0);
2819
2820         /* Associate the queue pair to the vector and enable the queue int */
2821         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2822               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2823               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2824
2825         wr32(hw, I40E_QINT_RQCTL(0), val);
2826
2827         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2828               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2829               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2830
2831         wr32(hw, I40E_QINT_TQCTL(0), val);
2832         i40e_flush(hw);
2833 }
2834
2835 /**
2836  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2837  * @pf: board private structure
2838  **/
2839 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2840 {
2841         struct i40e_hw *hw = &pf->hw;
2842
2843         wr32(hw, I40E_PFINT_DYN_CTL0,
2844              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2845         i40e_flush(hw);
2846 }
2847
2848 /**
2849  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2850  * @pf: board private structure
2851  **/
2852 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2853 {
2854         struct i40e_hw *hw = &pf->hw;
2855         u32 val;
2856
2857         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2858               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2859               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2860
2861         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2862         i40e_flush(hw);
2863 }
2864
2865 /**
2866  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2867  * @vsi: pointer to a vsi
2868  * @vector: enable a particular Hw Interrupt vector
2869  **/
2870 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2871 {
2872         struct i40e_pf *pf = vsi->back;
2873         struct i40e_hw *hw = &pf->hw;
2874         u32 val;
2875
2876         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2877               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2878               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2879         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2880         /* skip the flush */
2881 }
2882
2883 /**
2884  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
2885  * @vsi: pointer to a vsi
2886  * @vector: enable a particular Hw Interrupt vector
2887  **/
2888 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
2889 {
2890         struct i40e_pf *pf = vsi->back;
2891         struct i40e_hw *hw = &pf->hw;
2892         u32 val;
2893
2894         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
2895         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2896         i40e_flush(hw);
2897 }
2898
2899 /**
2900  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2901  * @irq: interrupt number
2902  * @data: pointer to a q_vector
2903  **/
2904 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2905 {
2906         struct i40e_q_vector *q_vector = data;
2907
2908         if (!q_vector->tx.ring && !q_vector->rx.ring)
2909                 return IRQ_HANDLED;
2910
2911         napi_schedule(&q_vector->napi);
2912
2913         return IRQ_HANDLED;
2914 }
2915
2916 /**
2917  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2918  * @vsi: the VSI being configured
2919  * @basename: name for the vector
2920  *
2921  * Allocates MSI-X vectors and requests interrupts from the kernel.
2922  **/
2923 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2924 {
2925         int q_vectors = vsi->num_q_vectors;
2926         struct i40e_pf *pf = vsi->back;
2927         int base = vsi->base_vector;
2928         int rx_int_idx = 0;
2929         int tx_int_idx = 0;
2930         int vector, err;
2931
2932         for (vector = 0; vector < q_vectors; vector++) {
2933                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2934
2935                 if (q_vector->tx.ring && q_vector->rx.ring) {
2936                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2937                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2938                         tx_int_idx++;
2939                 } else if (q_vector->rx.ring) {
2940                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2941                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
2942                 } else if (q_vector->tx.ring) {
2943                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2944                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
2945                 } else {
2946                         /* skip this unused q_vector */
2947                         continue;
2948                 }
2949                 err = request_irq(pf->msix_entries[base + vector].vector,
2950                                   vsi->irq_handler,
2951                                   0,
2952                                   q_vector->name,
2953                                   q_vector);
2954                 if (err) {
2955                         dev_info(&pf->pdev->dev,
2956                                  "%s: request_irq failed, error: %d\n",
2957                                  __func__, err);
2958                         goto free_queue_irqs;
2959                 }
2960                 /* assign the mask for this irq */
2961                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2962                                       &q_vector->affinity_mask);
2963         }
2964
2965         vsi->irqs_ready = true;
2966         return 0;
2967
2968 free_queue_irqs:
2969         while (vector) {
2970                 vector--;
2971                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2972                                       NULL);
2973                 free_irq(pf->msix_entries[base + vector].vector,
2974                          &(vsi->q_vectors[vector]));
2975         }
2976         return err;
2977 }
2978
2979 /**
2980  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
2981  * @vsi: the VSI being un-configured
2982  **/
2983 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
2984 {
2985         struct i40e_pf *pf = vsi->back;
2986         struct i40e_hw *hw = &pf->hw;
2987         int base = vsi->base_vector;
2988         int i;
2989
2990         for (i = 0; i < vsi->num_queue_pairs; i++) {
2991                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
2992                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
2993         }
2994
2995         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
2996                 for (i = vsi->base_vector;
2997                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
2998                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
2999
3000                 i40e_flush(hw);
3001                 for (i = 0; i < vsi->num_q_vectors; i++)
3002                         synchronize_irq(pf->msix_entries[i + base].vector);
3003         } else {
3004                 /* Legacy and MSI mode - this stops all interrupt handling */
3005                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3006                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3007                 i40e_flush(hw);
3008                 synchronize_irq(pf->pdev->irq);
3009         }
3010 }
3011
3012 /**
3013  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3014  * @vsi: the VSI being configured
3015  **/
3016 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3017 {
3018         struct i40e_pf *pf = vsi->back;
3019         int i;
3020
3021         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3022                 for (i = vsi->base_vector;
3023                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3024                         i40e_irq_dynamic_enable(vsi, i);
3025         } else {
3026                 i40e_irq_dynamic_enable_icr0(pf);
3027         }
3028
3029         i40e_flush(&pf->hw);
3030         return 0;
3031 }
3032
3033 /**
3034  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3035  * @pf: board private structure
3036  **/
3037 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3038 {
3039         /* Disable ICR 0 */
3040         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3041         i40e_flush(&pf->hw);
3042 }
3043
3044 /**
3045  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3046  * @irq: interrupt number
3047  * @data: pointer to a q_vector
3048  *
3049  * This is the handler used for all MSI/Legacy interrupts, and deals
3050  * with both queue and non-queue interrupts.  This is also used in
3051  * MSIX mode to handle the non-queue interrupts.
3052  **/
3053 static irqreturn_t i40e_intr(int irq, void *data)
3054 {
3055         struct i40e_pf *pf = (struct i40e_pf *)data;
3056         struct i40e_hw *hw = &pf->hw;
3057         irqreturn_t ret = IRQ_NONE;
3058         u32 icr0, icr0_remaining;
3059         u32 val, ena_mask;
3060
3061         icr0 = rd32(hw, I40E_PFINT_ICR0);
3062         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3063
3064         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3065         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3066                 goto enable_intr;
3067
3068         /* if interrupt but no bits showing, must be SWINT */
3069         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3070             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3071                 pf->sw_int_count++;
3072
3073         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3074         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3075
3076                 /* temporarily disable queue cause for NAPI processing */
3077                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3078                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3079                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3080
3081                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3082                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3083                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3084
3085                 if (!test_bit(__I40E_DOWN, &pf->state))
3086                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3087         }
3088
3089         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3090                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3091                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3092         }
3093
3094         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3095                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3096                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3097         }
3098
3099         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3100                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3101                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3102         }
3103
3104         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3105                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3106                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3107                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3108                 val = rd32(hw, I40E_GLGEN_RSTAT);
3109                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3110                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3111                 if (val == I40E_RESET_CORER) {
3112                         pf->corer_count++;
3113                 } else if (val == I40E_RESET_GLOBR) {
3114                         pf->globr_count++;
3115                 } else if (val == I40E_RESET_EMPR) {
3116                         pf->empr_count++;
3117                         set_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
3118                 }
3119         }
3120
3121         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3122                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3123                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3124         }
3125
3126         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3127                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3128
3129                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3130                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3131                         i40e_ptp_tx_hwtstamp(pf);
3132                 }
3133         }
3134
3135         /* If a critical error is pending we have no choice but to reset the
3136          * device.
3137          * Report and mask out any remaining unexpected interrupts.
3138          */
3139         icr0_remaining = icr0 & ena_mask;
3140         if (icr0_remaining) {
3141                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3142                          icr0_remaining);
3143                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3144                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3145                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3146                         dev_info(&pf->pdev->dev, "device will be reset\n");
3147                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3148                         i40e_service_event_schedule(pf);
3149                 }
3150                 ena_mask &= ~icr0_remaining;
3151         }
3152         ret = IRQ_HANDLED;
3153
3154 enable_intr:
3155         /* re-enable interrupt causes */
3156         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3157         if (!test_bit(__I40E_DOWN, &pf->state)) {
3158                 i40e_service_event_schedule(pf);
3159                 i40e_irq_dynamic_enable_icr0(pf);
3160         }
3161
3162         return ret;
3163 }
3164
3165 /**
3166  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3167  * @tx_ring:  tx ring to clean
3168  * @budget:   how many cleans we're allowed
3169  *
3170  * Returns true if there's any budget left (e.g. the clean is finished)
3171  **/
3172 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3173 {
3174         struct i40e_vsi *vsi = tx_ring->vsi;
3175         u16 i = tx_ring->next_to_clean;
3176         struct i40e_tx_buffer *tx_buf;
3177         struct i40e_tx_desc *tx_desc;
3178
3179         tx_buf = &tx_ring->tx_bi[i];
3180         tx_desc = I40E_TX_DESC(tx_ring, i);
3181         i -= tx_ring->count;
3182
3183         do {
3184                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3185
3186                 /* if next_to_watch is not set then there is no work pending */
3187                 if (!eop_desc)
3188                         break;
3189
3190                 /* prevent any other reads prior to eop_desc */
3191                 read_barrier_depends();
3192
3193                 /* if the descriptor isn't done, no work yet to do */
3194                 if (!(eop_desc->cmd_type_offset_bsz &
3195                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3196                         break;
3197
3198                 /* clear next_to_watch to prevent false hangs */
3199                 tx_buf->next_to_watch = NULL;
3200
3201                 tx_desc->buffer_addr = 0;
3202                 tx_desc->cmd_type_offset_bsz = 0;
3203                 /* move past filter desc */
3204                 tx_buf++;
3205                 tx_desc++;
3206                 i++;
3207                 if (unlikely(!i)) {
3208                         i -= tx_ring->count;
3209                         tx_buf = tx_ring->tx_bi;
3210                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3211                 }
3212                 /* unmap skb header data */
3213                 dma_unmap_single(tx_ring->dev,
3214                                  dma_unmap_addr(tx_buf, dma),
3215                                  dma_unmap_len(tx_buf, len),
3216                                  DMA_TO_DEVICE);
3217                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3218                         kfree(tx_buf->raw_buf);
3219
3220                 tx_buf->raw_buf = NULL;
3221                 tx_buf->tx_flags = 0;
3222                 tx_buf->next_to_watch = NULL;
3223                 dma_unmap_len_set(tx_buf, len, 0);
3224                 tx_desc->buffer_addr = 0;
3225                 tx_desc->cmd_type_offset_bsz = 0;
3226
3227                 /* move us past the eop_desc for start of next FD desc */
3228                 tx_buf++;
3229                 tx_desc++;
3230                 i++;
3231                 if (unlikely(!i)) {
3232                         i -= tx_ring->count;
3233                         tx_buf = tx_ring->tx_bi;
3234                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3235                 }
3236
3237                 /* update budget accounting */
3238                 budget--;
3239         } while (likely(budget));
3240
3241         i += tx_ring->count;
3242         tx_ring->next_to_clean = i;
3243
3244         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3245                 i40e_irq_dynamic_enable(vsi,
3246                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3247         }
3248         return budget > 0;
3249 }
3250
3251 /**
3252  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3253  * @irq: interrupt number
3254  * @data: pointer to a q_vector
3255  **/
3256 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3257 {
3258         struct i40e_q_vector *q_vector = data;
3259         struct i40e_vsi *vsi;
3260
3261         if (!q_vector->tx.ring)
3262                 return IRQ_HANDLED;
3263
3264         vsi = q_vector->tx.ring->vsi;
3265         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3266
3267         return IRQ_HANDLED;
3268 }
3269
3270 /**
3271  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3272  * @vsi: the VSI being configured
3273  * @v_idx: vector index
3274  * @qp_idx: queue pair index
3275  **/
3276 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3277 {
3278         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3279         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3280         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3281
3282         tx_ring->q_vector = q_vector;
3283         tx_ring->next = q_vector->tx.ring;
3284         q_vector->tx.ring = tx_ring;
3285         q_vector->tx.count++;
3286
3287         rx_ring->q_vector = q_vector;
3288         rx_ring->next = q_vector->rx.ring;
3289         q_vector->rx.ring = rx_ring;
3290         q_vector->rx.count++;
3291 }
3292
3293 /**
3294  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3295  * @vsi: the VSI being configured
3296  *
3297  * This function maps descriptor rings to the queue-specific vectors
3298  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3299  * one vector per queue pair, but on a constrained vector budget, we
3300  * group the queue pairs as "efficiently" as possible.
3301  **/
3302 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3303 {
3304         int qp_remaining = vsi->num_queue_pairs;
3305         int q_vectors = vsi->num_q_vectors;
3306         int num_ringpairs;
3307         int v_start = 0;
3308         int qp_idx = 0;
3309
3310         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3311          * group them so there are multiple queues per vector.
3312          * It is also important to go through all the vectors available to be
3313          * sure that if we don't use all the vectors, that the remaining vectors
3314          * are cleared. This is especially important when decreasing the
3315          * number of queues in use.
3316          */
3317         for (; v_start < q_vectors; v_start++) {
3318                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3319
3320                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3321
3322                 q_vector->num_ringpairs = num_ringpairs;
3323
3324                 q_vector->rx.count = 0;
3325                 q_vector->tx.count = 0;
3326                 q_vector->rx.ring = NULL;
3327                 q_vector->tx.ring = NULL;
3328
3329                 while (num_ringpairs--) {
3330                         map_vector_to_qp(vsi, v_start, qp_idx);
3331                         qp_idx++;
3332                         qp_remaining--;
3333                 }
3334         }
3335 }
3336
3337 /**
3338  * i40e_vsi_request_irq - Request IRQ from the OS
3339  * @vsi: the VSI being configured
3340  * @basename: name for the vector
3341  **/
3342 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3343 {
3344         struct i40e_pf *pf = vsi->back;
3345         int err;
3346
3347         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3348                 err = i40e_vsi_request_irq_msix(vsi, basename);
3349         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3350                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3351                                   pf->misc_int_name, pf);
3352         else
3353                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3354                                   pf->misc_int_name, pf);
3355
3356         if (err)
3357                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3358
3359         return err;
3360 }
3361
3362 #ifdef CONFIG_NET_POLL_CONTROLLER
3363 /**
3364  * i40e_netpoll - A Polling 'interrupt'handler
3365  * @netdev: network interface device structure
3366  *
3367  * This is used by netconsole to send skbs without having to re-enable
3368  * interrupts.  It's not called while the normal interrupt routine is executing.
3369  **/
3370 #ifdef I40E_FCOE
3371 void i40e_netpoll(struct net_device *netdev)
3372 #else
3373 static void i40e_netpoll(struct net_device *netdev)
3374 #endif
3375 {
3376         struct i40e_netdev_priv *np = netdev_priv(netdev);
3377         struct i40e_vsi *vsi = np->vsi;
3378         struct i40e_pf *pf = vsi->back;
3379         int i;
3380
3381         /* if interface is down do nothing */
3382         if (test_bit(__I40E_DOWN, &vsi->state))
3383                 return;
3384
3385         pf->flags |= I40E_FLAG_IN_NETPOLL;
3386         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3387                 for (i = 0; i < vsi->num_q_vectors; i++)
3388                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3389         } else {
3390                 i40e_intr(pf->pdev->irq, netdev);
3391         }
3392         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3393 }
3394 #endif
3395
3396 /**
3397  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3398  * @pf: the PF being configured
3399  * @pf_q: the PF queue
3400  * @enable: enable or disable state of the queue
3401  *
3402  * This routine will wait for the given Tx queue of the PF to reach the
3403  * enabled or disabled state.
3404  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3405  * multiple retries; else will return 0 in case of success.
3406  **/
3407 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3408 {
3409         int i;
3410         u32 tx_reg;
3411
3412         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3413                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3414                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3415                         break;
3416
3417                 udelay(10);
3418         }
3419         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3420                 return -ETIMEDOUT;
3421
3422         return 0;
3423 }
3424
3425 /**
3426  * i40e_vsi_control_tx - Start or stop a VSI's rings
3427  * @vsi: the VSI being configured
3428  * @enable: start or stop the rings
3429  **/
3430 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3431 {
3432         struct i40e_pf *pf = vsi->back;
3433         struct i40e_hw *hw = &pf->hw;
3434         int i, j, pf_q, ret = 0;
3435         u32 tx_reg;
3436
3437         pf_q = vsi->base_queue;
3438         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3439
3440                 /* warn the TX unit of coming changes */
3441                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3442                 if (!enable)
3443                         udelay(10);
3444
3445                 for (j = 0; j < 50; j++) {
3446                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3447                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3448                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3449                                 break;
3450                         usleep_range(1000, 2000);
3451                 }
3452                 /* Skip if the queue is already in the requested state */
3453                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3454                         continue;
3455
3456                 /* turn on/off the queue */
3457                 if (enable) {
3458                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3459                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3460                 } else {
3461                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3462                 }
3463
3464                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3465
3466                 /* wait for the change to finish */
3467                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3468                 if (ret) {
3469                         dev_info(&pf->pdev->dev,
3470                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3471                                  __func__, vsi->seid, pf_q,
3472                                  (enable ? "en" : "dis"));
3473                         break;
3474                 }
3475         }
3476
3477         if (hw->revision_id == 0)
3478                 mdelay(50);
3479         return ret;
3480 }
3481
3482 /**
3483  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3484  * @pf: the PF being configured
3485  * @pf_q: the PF queue
3486  * @enable: enable or disable state of the queue
3487  *
3488  * This routine will wait for the given Rx queue of the PF to reach the
3489  * enabled or disabled state.
3490  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3491  * multiple retries; else will return 0 in case of success.
3492  **/
3493 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3494 {
3495         int i;
3496         u32 rx_reg;
3497
3498         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3499                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3500                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3501                         break;
3502
3503                 udelay(10);
3504         }
3505         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3506                 return -ETIMEDOUT;
3507
3508         return 0;
3509 }
3510
3511 /**
3512  * i40e_vsi_control_rx - Start or stop a VSI's rings
3513  * @vsi: the VSI being configured
3514  * @enable: start or stop the rings
3515  **/
3516 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3517 {
3518         struct i40e_pf *pf = vsi->back;
3519         struct i40e_hw *hw = &pf->hw;
3520         int i, j, pf_q, ret = 0;
3521         u32 rx_reg;
3522
3523         pf_q = vsi->base_queue;
3524         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3525                 for (j = 0; j < 50; j++) {
3526                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3527                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3528                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3529                                 break;
3530                         usleep_range(1000, 2000);
3531                 }
3532
3533                 /* Skip if the queue is already in the requested state */
3534                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3535                         continue;
3536
3537                 /* turn on/off the queue */
3538                 if (enable)
3539                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3540                 else
3541                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3542                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3543
3544                 /* wait for the change to finish */
3545                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3546                 if (ret) {
3547                         dev_info(&pf->pdev->dev,
3548                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3549                                  __func__, vsi->seid, pf_q,
3550                                  (enable ? "en" : "dis"));
3551                         break;
3552                 }
3553         }
3554
3555         return ret;
3556 }
3557
3558 /**
3559  * i40e_vsi_control_rings - Start or stop a VSI's rings
3560  * @vsi: the VSI being configured
3561  * @enable: start or stop the rings
3562  **/
3563 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3564 {
3565         int ret = 0;
3566
3567         /* do rx first for enable and last for disable */
3568         if (request) {
3569                 ret = i40e_vsi_control_rx(vsi, request);
3570                 if (ret)
3571                         return ret;
3572                 ret = i40e_vsi_control_tx(vsi, request);
3573         } else {
3574                 /* Ignore return value, we need to shutdown whatever we can */
3575                 i40e_vsi_control_tx(vsi, request);
3576                 i40e_vsi_control_rx(vsi, request);
3577         }
3578
3579         return ret;
3580 }
3581
3582 /**
3583  * i40e_vsi_free_irq - Free the irq association with the OS
3584  * @vsi: the VSI being configured
3585  **/
3586 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3587 {
3588         struct i40e_pf *pf = vsi->back;
3589         struct i40e_hw *hw = &pf->hw;
3590         int base = vsi->base_vector;
3591         u32 val, qp;
3592         int i;
3593
3594         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3595                 if (!vsi->q_vectors)
3596                         return;
3597
3598                 if (!vsi->irqs_ready)
3599                         return;
3600
3601                 vsi->irqs_ready = false;
3602                 for (i = 0; i < vsi->num_q_vectors; i++) {
3603                         u16 vector = i + base;
3604
3605                         /* free only the irqs that were actually requested */
3606                         if (!vsi->q_vectors[i] ||
3607                             !vsi->q_vectors[i]->num_ringpairs)
3608                                 continue;
3609
3610                         /* clear the affinity_mask in the IRQ descriptor */
3611                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3612                                               NULL);
3613                         free_irq(pf->msix_entries[vector].vector,
3614                                  vsi->q_vectors[i]);
3615
3616                         /* Tear down the interrupt queue link list
3617                          *
3618                          * We know that they come in pairs and always
3619                          * the Rx first, then the Tx.  To clear the
3620                          * link list, stick the EOL value into the
3621                          * next_q field of the registers.
3622                          */
3623                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3624                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3625                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3626                         val |= I40E_QUEUE_END_OF_LIST
3627                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3628                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3629
3630                         while (qp != I40E_QUEUE_END_OF_LIST) {
3631                                 u32 next;
3632
3633                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3634
3635                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3636                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3637                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3638                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3639
3640                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3641                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3642
3643                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3644
3645                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3646
3647                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3648                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3649
3650                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3651                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3652                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3653                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3654
3655                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3656                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3657
3658                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3659                                 qp = next;
3660                         }
3661                 }
3662         } else {
3663                 free_irq(pf->pdev->irq, pf);
3664
3665                 val = rd32(hw, I40E_PFINT_LNKLST0);
3666                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3667                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3668                 val |= I40E_QUEUE_END_OF_LIST
3669                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3670                 wr32(hw, I40E_PFINT_LNKLST0, val);
3671
3672                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3673                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3674                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3675                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3676                          I40E_QINT_RQCTL_INTEVENT_MASK);
3677
3678                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3679                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3680
3681                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3682
3683                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3684
3685                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3686                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3687                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3688                          I40E_QINT_TQCTL_INTEVENT_MASK);
3689
3690                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3691                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3692
3693                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3694         }
3695 }
3696
3697 /**
3698  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3699  * @vsi: the VSI being configured
3700  * @v_idx: Index of vector to be freed
3701  *
3702  * This function frees the memory allocated to the q_vector.  In addition if
3703  * NAPI is enabled it will delete any references to the NAPI struct prior
3704  * to freeing the q_vector.
3705  **/
3706 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3707 {
3708         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3709         struct i40e_ring *ring;
3710
3711         if (!q_vector)
3712                 return;
3713
3714         /* disassociate q_vector from rings */
3715         i40e_for_each_ring(ring, q_vector->tx)
3716                 ring->q_vector = NULL;
3717
3718         i40e_for_each_ring(ring, q_vector->rx)
3719                 ring->q_vector = NULL;
3720
3721         /* only VSI w/ an associated netdev is set up w/ NAPI */
3722         if (vsi->netdev)
3723                 netif_napi_del(&q_vector->napi);
3724
3725         vsi->q_vectors[v_idx] = NULL;
3726
3727         kfree_rcu(q_vector, rcu);
3728 }
3729
3730 /**
3731  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3732  * @vsi: the VSI being un-configured
3733  *
3734  * This frees the memory allocated to the q_vectors and
3735  * deletes references to the NAPI struct.
3736  **/
3737 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3738 {
3739         int v_idx;
3740
3741         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3742                 i40e_free_q_vector(vsi, v_idx);
3743 }
3744
3745 /**
3746  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3747  * @pf: board private structure
3748  **/
3749 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3750 {
3751         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3752         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3753                 pci_disable_msix(pf->pdev);
3754                 kfree(pf->msix_entries);
3755                 pf->msix_entries = NULL;
3756         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3757                 pci_disable_msi(pf->pdev);
3758         }
3759         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3760 }
3761
3762 /**
3763  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3764  * @pf: board private structure
3765  *
3766  * We go through and clear interrupt specific resources and reset the structure
3767  * to pre-load conditions
3768  **/
3769 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3770 {
3771         int i;
3772
3773         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3774         for (i = 0; i < pf->num_alloc_vsi; i++)
3775                 if (pf->vsi[i])
3776                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3777         i40e_reset_interrupt_capability(pf);
3778 }
3779
3780 /**
3781  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3782  * @vsi: the VSI being configured
3783  **/
3784 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3785 {
3786         int q_idx;
3787
3788         if (!vsi->netdev)
3789                 return;
3790
3791         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3792                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3793 }
3794
3795 /**
3796  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3797  * @vsi: the VSI being configured
3798  **/
3799 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3800 {
3801         int q_idx;
3802
3803         if (!vsi->netdev)
3804                 return;
3805
3806         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3807                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3808 }
3809
3810 /**
3811  * i40e_vsi_close - Shut down a VSI
3812  * @vsi: the vsi to be quelled
3813  **/
3814 static void i40e_vsi_close(struct i40e_vsi *vsi)
3815 {
3816         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3817                 i40e_down(vsi);
3818         i40e_vsi_free_irq(vsi);
3819         i40e_vsi_free_tx_resources(vsi);
3820         i40e_vsi_free_rx_resources(vsi);
3821 }
3822
3823 /**
3824  * i40e_quiesce_vsi - Pause a given VSI
3825  * @vsi: the VSI being paused
3826  **/
3827 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3828 {
3829         if (test_bit(__I40E_DOWN, &vsi->state))
3830                 return;
3831
3832         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3833         if (vsi->netdev && netif_running(vsi->netdev)) {
3834                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3835         } else {
3836                 i40e_vsi_close(vsi);
3837         }
3838 }
3839
3840 /**
3841  * i40e_unquiesce_vsi - Resume a given VSI
3842  * @vsi: the VSI being resumed
3843  **/
3844 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3845 {
3846         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3847                 return;
3848
3849         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3850         if (vsi->netdev && netif_running(vsi->netdev))
3851                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3852         else
3853                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
3854 }
3855
3856 /**
3857  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3858  * @pf: the PF
3859  **/
3860 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3861 {
3862         int v;
3863
3864         for (v = 0; v < pf->num_alloc_vsi; v++) {
3865                 if (pf->vsi[v])
3866                         i40e_quiesce_vsi(pf->vsi[v]);
3867         }
3868 }
3869
3870 /**
3871  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3872  * @pf: the PF
3873  **/
3874 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3875 {
3876         int v;
3877
3878         for (v = 0; v < pf->num_alloc_vsi; v++) {
3879                 if (pf->vsi[v])
3880                         i40e_unquiesce_vsi(pf->vsi[v]);
3881         }
3882 }
3883
3884 /**
3885  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
3886  * @dcbcfg: the corresponding DCBx configuration structure
3887  *
3888  * Return the number of TCs from given DCBx configuration
3889  **/
3890 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
3891 {
3892         u8 num_tc = 0;
3893         int i;
3894
3895         /* Scan the ETS Config Priority Table to find
3896          * traffic class enabled for a given priority
3897          * and use the traffic class index to get the
3898          * number of traffic classes enabled
3899          */
3900         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3901                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
3902                         num_tc = dcbcfg->etscfg.prioritytable[i];
3903         }
3904
3905         /* Traffic class index starts from zero so
3906          * increment to return the actual count
3907          */
3908         return num_tc + 1;
3909 }
3910
3911 /**
3912  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
3913  * @dcbcfg: the corresponding DCBx configuration structure
3914  *
3915  * Query the current DCB configuration and return the number of
3916  * traffic classes enabled from the given DCBX config
3917  **/
3918 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
3919 {
3920         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
3921         u8 enabled_tc = 1;
3922         u8 i;
3923
3924         for (i = 0; i < num_tc; i++)
3925                 enabled_tc |= 1 << i;
3926
3927         return enabled_tc;
3928 }
3929
3930 /**
3931  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
3932  * @pf: PF being queried
3933  *
3934  * Return number of traffic classes enabled for the given PF
3935  **/
3936 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
3937 {
3938         struct i40e_hw *hw = &pf->hw;
3939         u8 i, enabled_tc;
3940         u8 num_tc = 0;
3941         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3942
3943         /* If DCB is not enabled then always in single TC */
3944         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3945                 return 1;
3946
3947         /* MFP mode return count of enabled TCs for this PF */
3948         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3949                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3950                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3951                         if (enabled_tc & (1 << i))
3952                                 num_tc++;
3953                 }
3954                 return num_tc;
3955         }
3956
3957         /* SFP mode will be enabled for all TCs on port */
3958         return i40e_dcb_get_num_tc(dcbcfg);
3959 }
3960
3961 /**
3962  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
3963  * @pf: PF being queried
3964  *
3965  * Return a bitmap for first enabled traffic class for this PF.
3966  **/
3967 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
3968 {
3969         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3970         u8 i = 0;
3971
3972         if (!enabled_tc)
3973                 return 0x1; /* TC0 */
3974
3975         /* Find the first enabled TC */
3976         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3977                 if (enabled_tc & (1 << i))
3978                         break;
3979         }
3980
3981         return 1 << i;
3982 }
3983
3984 /**
3985  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
3986  * @pf: PF being queried
3987  *
3988  * Return a bitmap for enabled traffic classes for this PF.
3989  **/
3990 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
3991 {
3992         /* If DCB is not enabled for this PF then just return default TC */
3993         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3994                 return i40e_pf_get_default_tc(pf);
3995
3996         /* MFP mode will have enabled TCs set by FW */
3997         if (pf->flags & I40E_FLAG_MFP_ENABLED)
3998                 return pf->hw.func_caps.enabled_tcmap;
3999
4000         /* SFP mode we want PF to be enabled for all TCs */
4001         return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4002 }
4003
4004 /**
4005  * i40e_vsi_get_bw_info - Query VSI BW Information
4006  * @vsi: the VSI being queried
4007  *
4008  * Returns 0 on success, negative value on failure
4009  **/
4010 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4011 {
4012         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4013         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4014         struct i40e_pf *pf = vsi->back;
4015         struct i40e_hw *hw = &pf->hw;
4016         i40e_status aq_ret;
4017         u32 tc_bw_max;
4018         int i;
4019
4020         /* Get the VSI level BW configuration */
4021         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4022         if (aq_ret) {
4023                 dev_info(&pf->pdev->dev,
4024                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
4025                          aq_ret, pf->hw.aq.asq_last_status);
4026                 return -EINVAL;
4027         }
4028
4029         /* Get the VSI level BW configuration per TC */
4030         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4031                                                   NULL);
4032         if (aq_ret) {
4033                 dev_info(&pf->pdev->dev,
4034                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
4035                          aq_ret, pf->hw.aq.asq_last_status);
4036                 return -EINVAL;
4037         }
4038
4039         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4040                 dev_info(&pf->pdev->dev,
4041                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4042                          bw_config.tc_valid_bits,
4043                          bw_ets_config.tc_valid_bits);
4044                 /* Still continuing */
4045         }
4046
4047         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4048         vsi->bw_max_quanta = bw_config.max_bw;
4049         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4050                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4051         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4052                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4053                 vsi->bw_ets_limit_credits[i] =
4054                                         le16_to_cpu(bw_ets_config.credits[i]);
4055                 /* 3 bits out of 4 for each TC */
4056                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4057         }
4058
4059         return 0;
4060 }
4061
4062 /**
4063  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4064  * @vsi: the VSI being configured
4065  * @enabled_tc: TC bitmap
4066  * @bw_credits: BW shared credits per TC
4067  *
4068  * Returns 0 on success, negative value on failure
4069  **/
4070 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4071                                        u8 *bw_share)
4072 {
4073         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4074         i40e_status aq_ret;
4075         int i;
4076
4077         bw_data.tc_valid_bits = enabled_tc;
4078         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4079                 bw_data.tc_bw_credits[i] = bw_share[i];
4080
4081         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4082                                           NULL);
4083         if (aq_ret) {
4084                 dev_info(&vsi->back->pdev->dev,
4085                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4086                          vsi->back->hw.aq.asq_last_status);
4087                 return -EINVAL;
4088         }
4089
4090         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4091                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4092
4093         return 0;
4094 }
4095
4096 /**
4097  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4098  * @vsi: the VSI being configured
4099  * @enabled_tc: TC map to be enabled
4100  *
4101  **/
4102 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4103 {
4104         struct net_device *netdev = vsi->netdev;
4105         struct i40e_pf *pf = vsi->back;
4106         struct i40e_hw *hw = &pf->hw;
4107         u8 netdev_tc = 0;
4108         int i;
4109         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4110
4111         if (!netdev)
4112                 return;
4113
4114         if (!enabled_tc) {
4115                 netdev_reset_tc(netdev);
4116                 return;
4117         }
4118
4119         /* Set up actual enabled TCs on the VSI */
4120         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4121                 return;
4122
4123         /* set per TC queues for the VSI */
4124         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4125                 /* Only set TC queues for enabled tcs
4126                  *
4127                  * e.g. For a VSI that has TC0 and TC3 enabled the
4128                  * enabled_tc bitmap would be 0x00001001; the driver
4129                  * will set the numtc for netdev as 2 that will be
4130                  * referenced by the netdev layer as TC 0 and 1.
4131                  */
4132                 if (vsi->tc_config.enabled_tc & (1 << i))
4133                         netdev_set_tc_queue(netdev,
4134                                         vsi->tc_config.tc_info[i].netdev_tc,
4135                                         vsi->tc_config.tc_info[i].qcount,
4136                                         vsi->tc_config.tc_info[i].qoffset);
4137         }
4138
4139         /* Assign UP2TC map for the VSI */
4140         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4141                 /* Get the actual TC# for the UP */
4142                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4143                 /* Get the mapped netdev TC# for the UP */
4144                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4145                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4146         }
4147 }
4148
4149 /**
4150  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4151  * @vsi: the VSI being configured
4152  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4153  **/
4154 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4155                                       struct i40e_vsi_context *ctxt)
4156 {
4157         /* copy just the sections touched not the entire info
4158          * since not all sections are valid as returned by
4159          * update vsi params
4160          */
4161         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4162         memcpy(&vsi->info.queue_mapping,
4163                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4164         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4165                sizeof(vsi->info.tc_mapping));
4166 }
4167
4168 /**
4169  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4170  * @vsi: VSI to be configured
4171  * @enabled_tc: TC bitmap
4172  *
4173  * This configures a particular VSI for TCs that are mapped to the
4174  * given TC bitmap. It uses default bandwidth share for TCs across
4175  * VSIs to configure TC for a particular VSI.
4176  *
4177  * NOTE:
4178  * It is expected that the VSI queues have been quisced before calling
4179  * this function.
4180  **/
4181 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4182 {
4183         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4184         struct i40e_vsi_context ctxt;
4185         int ret = 0;
4186         int i;
4187
4188         /* Check if enabled_tc is same as existing or new TCs */
4189         if (vsi->tc_config.enabled_tc == enabled_tc)
4190                 return ret;
4191
4192         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4193         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4194                 if (enabled_tc & (1 << i))
4195                         bw_share[i] = 1;
4196         }
4197
4198         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4199         if (ret) {
4200                 dev_info(&vsi->back->pdev->dev,
4201                          "Failed configuring TC map %d for VSI %d\n",
4202                          enabled_tc, vsi->seid);
4203                 goto out;
4204         }
4205
4206         /* Update Queue Pairs Mapping for currently enabled UPs */
4207         ctxt.seid = vsi->seid;
4208         ctxt.pf_num = vsi->back->hw.pf_id;
4209         ctxt.vf_num = 0;
4210         ctxt.uplink_seid = vsi->uplink_seid;
4211         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
4212         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4213
4214         /* Update the VSI after updating the VSI queue-mapping information */
4215         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4216         if (ret) {
4217                 dev_info(&vsi->back->pdev->dev,
4218                          "update vsi failed, aq_err=%d\n",
4219                          vsi->back->hw.aq.asq_last_status);
4220                 goto out;
4221         }
4222         /* update the local VSI info with updated queue map */
4223         i40e_vsi_update_queue_map(vsi, &ctxt);
4224         vsi->info.valid_sections = 0;
4225
4226         /* Update current VSI BW information */
4227         ret = i40e_vsi_get_bw_info(vsi);
4228         if (ret) {
4229                 dev_info(&vsi->back->pdev->dev,
4230                          "Failed updating vsi bw info, aq_err=%d\n",
4231                          vsi->back->hw.aq.asq_last_status);
4232                 goto out;
4233         }
4234
4235         /* Update the netdev TC setup */
4236         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4237 out:
4238         return ret;
4239 }
4240
4241 /**
4242  * i40e_veb_config_tc - Configure TCs for given VEB
4243  * @veb: given VEB
4244  * @enabled_tc: TC bitmap
4245  *
4246  * Configures given TC bitmap for VEB (switching) element
4247  **/
4248 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4249 {
4250         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4251         struct i40e_pf *pf = veb->pf;
4252         int ret = 0;
4253         int i;
4254
4255         /* No TCs or already enabled TCs just return */
4256         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4257                 return ret;
4258
4259         bw_data.tc_valid_bits = enabled_tc;
4260         /* bw_data.absolute_credits is not set (relative) */
4261
4262         /* Enable ETS TCs with equal BW Share for now */
4263         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4264                 if (enabled_tc & (1 << i))
4265                         bw_data.tc_bw_share_credits[i] = 1;
4266         }
4267
4268         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4269                                                    &bw_data, NULL);
4270         if (ret) {
4271                 dev_info(&pf->pdev->dev,
4272                          "veb bw config failed, aq_err=%d\n",
4273                          pf->hw.aq.asq_last_status);
4274                 goto out;
4275         }
4276
4277         /* Update the BW information */
4278         ret = i40e_veb_get_bw_info(veb);
4279         if (ret) {
4280                 dev_info(&pf->pdev->dev,
4281                          "Failed getting veb bw config, aq_err=%d\n",
4282                          pf->hw.aq.asq_last_status);
4283         }
4284
4285 out:
4286         return ret;
4287 }
4288
4289 #ifdef CONFIG_I40E_DCB
4290 /**
4291  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4292  * @pf: PF struct
4293  *
4294  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4295  * the caller would've quiesce all the VSIs before calling
4296  * this function
4297  **/
4298 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4299 {
4300         u8 tc_map = 0;
4301         int ret;
4302         u8 v;
4303
4304         /* Enable the TCs available on PF to all VEBs */
4305         tc_map = i40e_pf_get_tc_map(pf);
4306         for (v = 0; v < I40E_MAX_VEB; v++) {
4307                 if (!pf->veb[v])
4308                         continue;
4309                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4310                 if (ret) {
4311                         dev_info(&pf->pdev->dev,
4312                                  "Failed configuring TC for VEB seid=%d\n",
4313                                  pf->veb[v]->seid);
4314                         /* Will try to configure as many components */
4315                 }
4316         }
4317
4318         /* Update each VSI */
4319         for (v = 0; v < pf->num_alloc_vsi; v++) {
4320                 if (!pf->vsi[v])
4321                         continue;
4322
4323                 /* - Enable all TCs for the LAN VSI
4324 #ifdef I40E_FCOE
4325                  * - For FCoE VSI only enable the TC configured
4326                  *   as per the APP TLV
4327 #endif
4328                  * - For all others keep them at TC0 for now
4329                  */
4330                 if (v == pf->lan_vsi)
4331                         tc_map = i40e_pf_get_tc_map(pf);
4332                 else
4333                         tc_map = i40e_pf_get_default_tc(pf);
4334 #ifdef I40E_FCOE
4335                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4336                         tc_map = i40e_get_fcoe_tc_map(pf);
4337 #endif /* #ifdef I40E_FCOE */
4338
4339                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4340                 if (ret) {
4341                         dev_info(&pf->pdev->dev,
4342                                  "Failed configuring TC for VSI seid=%d\n",
4343                                  pf->vsi[v]->seid);
4344                         /* Will try to configure as many components */
4345                 } else {
4346                         /* Re-configure VSI vectors based on updated TC map */
4347                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4348                         if (pf->vsi[v]->netdev)
4349                                 i40e_dcbnl_set_all(pf->vsi[v]);
4350                 }
4351         }
4352 }
4353
4354 /**
4355  * i40e_init_pf_dcb - Initialize DCB configuration
4356  * @pf: PF being configured
4357  *
4358  * Query the current DCB configuration and cache it
4359  * in the hardware structure
4360  **/
4361 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4362 {
4363         struct i40e_hw *hw = &pf->hw;
4364         int err = 0;
4365
4366         if (pf->hw.func_caps.npar_enable)
4367                 goto out;
4368
4369         /* Get the initial DCB configuration */
4370         err = i40e_init_dcb(hw);
4371         if (!err) {
4372                 /* Device/Function is not DCBX capable */
4373                 if ((!hw->func_caps.dcb) ||
4374                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4375                         dev_info(&pf->pdev->dev,
4376                                  "DCBX offload is not supported or is disabled for this PF.\n");
4377
4378                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4379                                 goto out;
4380
4381                 } else {
4382                         /* When status is not DISABLED then DCBX in FW */
4383                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4384                                        DCB_CAP_DCBX_VER_IEEE;
4385
4386                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4387                         /* Enable DCB tagging only when more than one TC */
4388                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4389                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4390                 }
4391         } else {
4392                 dev_info(&pf->pdev->dev, "AQ Querying DCB configuration failed: %d\n",
4393                          pf->hw.aq.asq_last_status);
4394         }
4395
4396 out:
4397         return err;
4398 }
4399 #endif /* CONFIG_I40E_DCB */
4400 #define SPEED_SIZE 14
4401 #define FC_SIZE 8
4402 /**
4403  * i40e_print_link_message - print link up or down
4404  * @vsi: the VSI for which link needs a message
4405  */
4406 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4407 {
4408         char speed[SPEED_SIZE] = "Unknown";
4409         char fc[FC_SIZE] = "RX/TX";
4410
4411         if (!isup) {
4412                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4413                 return;
4414         }
4415
4416         switch (vsi->back->hw.phy.link_info.link_speed) {
4417         case I40E_LINK_SPEED_40GB:
4418                 strncpy(speed, "40 Gbps", SPEED_SIZE);
4419                 break;
4420         case I40E_LINK_SPEED_10GB:
4421                 strncpy(speed, "10 Gbps", SPEED_SIZE);
4422                 break;
4423         case I40E_LINK_SPEED_1GB:
4424                 strncpy(speed, "1000 Mbps", SPEED_SIZE);
4425                 break;
4426         default:
4427                 break;
4428         }
4429
4430         switch (vsi->back->hw.fc.current_mode) {
4431         case I40E_FC_FULL:
4432                 strncpy(fc, "RX/TX", FC_SIZE);
4433                 break;
4434         case I40E_FC_TX_PAUSE:
4435                 strncpy(fc, "TX", FC_SIZE);
4436                 break;
4437         case I40E_FC_RX_PAUSE:
4438                 strncpy(fc, "RX", FC_SIZE);
4439                 break;
4440         default:
4441                 strncpy(fc, "None", FC_SIZE);
4442                 break;
4443         }
4444
4445         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4446                     speed, fc);
4447 }
4448
4449 /**
4450  * i40e_up_complete - Finish the last steps of bringing up a connection
4451  * @vsi: the VSI being configured
4452  **/
4453 static int i40e_up_complete(struct i40e_vsi *vsi)
4454 {
4455         struct i40e_pf *pf = vsi->back;
4456         u8 set_fc_aq_fail = 0;
4457         int err;
4458
4459         /* force flow control off */
4460         i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
4461
4462         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4463                 i40e_vsi_configure_msix(vsi);
4464         else
4465                 i40e_configure_msi_and_legacy(vsi);
4466
4467         /* start rings */
4468         err = i40e_vsi_control_rings(vsi, true);
4469         if (err)
4470                 return err;
4471
4472         clear_bit(__I40E_DOWN, &vsi->state);
4473         i40e_napi_enable_all(vsi);
4474         i40e_vsi_enable_irq(vsi);
4475
4476         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4477             (vsi->netdev)) {
4478                 i40e_print_link_message(vsi, true);
4479                 netif_tx_start_all_queues(vsi->netdev);
4480                 netif_carrier_on(vsi->netdev);
4481         } else if (vsi->netdev) {
4482                 i40e_print_link_message(vsi, false);
4483         }
4484
4485         /* replay FDIR SB filters */
4486         if (vsi->type == I40E_VSI_FDIR)
4487                 i40e_fdir_filter_restore(vsi);
4488         i40e_service_event_schedule(pf);
4489
4490         return 0;
4491 }
4492
4493 /**
4494  * i40e_vsi_reinit_locked - Reset the VSI
4495  * @vsi: the VSI being configured
4496  *
4497  * Rebuild the ring structs after some configuration
4498  * has changed, e.g. MTU size.
4499  **/
4500 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4501 {
4502         struct i40e_pf *pf = vsi->back;
4503
4504         WARN_ON(in_interrupt());
4505         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4506                 usleep_range(1000, 2000);
4507         i40e_down(vsi);
4508
4509         /* Give a VF some time to respond to the reset.  The
4510          * two second wait is based upon the watchdog cycle in
4511          * the VF driver.
4512          */
4513         if (vsi->type == I40E_VSI_SRIOV)
4514                 msleep(2000);
4515         i40e_up(vsi);
4516         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4517 }
4518
4519 /**
4520  * i40e_up - Bring the connection back up after being down
4521  * @vsi: the VSI being configured
4522  **/
4523 int i40e_up(struct i40e_vsi *vsi)
4524 {
4525         int err;
4526
4527         err = i40e_vsi_configure(vsi);
4528         if (!err)
4529                 err = i40e_up_complete(vsi);
4530
4531         return err;
4532 }
4533
4534 /**
4535  * i40e_down - Shutdown the connection processing
4536  * @vsi: the VSI being stopped
4537  **/
4538 void i40e_down(struct i40e_vsi *vsi)
4539 {
4540         int i;
4541
4542         /* It is assumed that the caller of this function
4543          * sets the vsi->state __I40E_DOWN bit.
4544          */
4545         if (vsi->netdev) {
4546                 netif_carrier_off(vsi->netdev);
4547                 netif_tx_disable(vsi->netdev);
4548         }
4549         i40e_vsi_disable_irq(vsi);
4550         i40e_vsi_control_rings(vsi, false);
4551         i40e_napi_disable_all(vsi);
4552
4553         for (i = 0; i < vsi->num_queue_pairs; i++) {
4554                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4555                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4556         }
4557 }
4558
4559 /**
4560  * i40e_setup_tc - configure multiple traffic classes
4561  * @netdev: net device to configure
4562  * @tc: number of traffic classes to enable
4563  **/
4564 #ifdef I40E_FCOE
4565 int i40e_setup_tc(struct net_device *netdev, u8 tc)
4566 #else
4567 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4568 #endif
4569 {
4570         struct i40e_netdev_priv *np = netdev_priv(netdev);
4571         struct i40e_vsi *vsi = np->vsi;
4572         struct i40e_pf *pf = vsi->back;
4573         u8 enabled_tc = 0;
4574         int ret = -EINVAL;
4575         int i;
4576
4577         /* Check if DCB enabled to continue */
4578         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4579                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4580                 goto exit;
4581         }
4582
4583         /* Check if MFP enabled */
4584         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4585                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4586                 goto exit;
4587         }
4588
4589         /* Check whether tc count is within enabled limit */
4590         if (tc > i40e_pf_get_num_tc(pf)) {
4591                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4592                 goto exit;
4593         }
4594
4595         /* Generate TC map for number of tc requested */
4596         for (i = 0; i < tc; i++)
4597                 enabled_tc |= (1 << i);
4598
4599         /* Requesting same TC configuration as already enabled */
4600         if (enabled_tc == vsi->tc_config.enabled_tc)
4601                 return 0;
4602
4603         /* Quiesce VSI queues */
4604         i40e_quiesce_vsi(vsi);
4605
4606         /* Configure VSI for enabled TCs */
4607         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4608         if (ret) {
4609                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4610                             vsi->seid);
4611                 goto exit;
4612         }
4613
4614         /* Unquiesce VSI */
4615         i40e_unquiesce_vsi(vsi);
4616
4617 exit:
4618         return ret;
4619 }
4620
4621 /**
4622  * i40e_open - Called when a network interface is made active
4623  * @netdev: network interface device structure
4624  *
4625  * The open entry point is called when a network interface is made
4626  * active by the system (IFF_UP).  At this point all resources needed
4627  * for transmit and receive operations are allocated, the interrupt
4628  * handler is registered with the OS, the netdev watchdog subtask is
4629  * enabled, and the stack is notified that the interface is ready.
4630  *
4631  * Returns 0 on success, negative value on failure
4632  **/
4633 #ifdef I40E_FCOE
4634 int i40e_open(struct net_device *netdev)
4635 #else
4636 static int i40e_open(struct net_device *netdev)
4637 #endif
4638 {
4639         struct i40e_netdev_priv *np = netdev_priv(netdev);
4640         struct i40e_vsi *vsi = np->vsi;
4641         struct i40e_pf *pf = vsi->back;
4642         int err;
4643
4644         /* disallow open during test or if eeprom is broken */
4645         if (test_bit(__I40E_TESTING, &pf->state) ||
4646             test_bit(__I40E_BAD_EEPROM, &pf->state))
4647                 return -EBUSY;
4648
4649         netif_carrier_off(netdev);
4650
4651         err = i40e_vsi_open(vsi);
4652         if (err)
4653                 return err;
4654
4655         /* configure global TSO hardware offload settings */
4656         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4657                                                        TCP_FLAG_FIN) >> 16);
4658         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4659                                                        TCP_FLAG_FIN |
4660                                                        TCP_FLAG_CWR) >> 16);
4661         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4662
4663 #ifdef CONFIG_I40E_VXLAN
4664         vxlan_get_rx_port(netdev);
4665 #endif
4666
4667         return 0;
4668 }
4669
4670 /**
4671  * i40e_vsi_open -
4672  * @vsi: the VSI to open
4673  *
4674  * Finish initialization of the VSI.
4675  *
4676  * Returns 0 on success, negative value on failure
4677  **/
4678 int i40e_vsi_open(struct i40e_vsi *vsi)
4679 {
4680         struct i40e_pf *pf = vsi->back;
4681         char int_name[IFNAMSIZ];
4682         int err;
4683
4684         /* allocate descriptors */
4685         err = i40e_vsi_setup_tx_resources(vsi);
4686         if (err)
4687                 goto err_setup_tx;
4688         err = i40e_vsi_setup_rx_resources(vsi);
4689         if (err)
4690                 goto err_setup_rx;
4691
4692         err = i40e_vsi_configure(vsi);
4693         if (err)
4694                 goto err_setup_rx;
4695
4696         if (vsi->netdev) {
4697                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4698                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4699                 err = i40e_vsi_request_irq(vsi, int_name);
4700                 if (err)
4701                         goto err_setup_rx;
4702
4703                 /* Notify the stack of the actual queue counts. */
4704                 err = netif_set_real_num_tx_queues(vsi->netdev,
4705                                                    vsi->num_queue_pairs);
4706                 if (err)
4707                         goto err_set_queues;
4708
4709                 err = netif_set_real_num_rx_queues(vsi->netdev,
4710                                                    vsi->num_queue_pairs);
4711                 if (err)
4712                         goto err_set_queues;
4713
4714         } else if (vsi->type == I40E_VSI_FDIR) {
4715                 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
4716                          dev_driver_string(&pf->pdev->dev));
4717                 err = i40e_vsi_request_irq(vsi, int_name);
4718         } else {
4719                 err = -EINVAL;
4720                 goto err_setup_rx;
4721         }
4722
4723         err = i40e_up_complete(vsi);
4724         if (err)
4725                 goto err_up_complete;
4726
4727         return 0;
4728
4729 err_up_complete:
4730         i40e_down(vsi);
4731 err_set_queues:
4732         i40e_vsi_free_irq(vsi);
4733 err_setup_rx:
4734         i40e_vsi_free_rx_resources(vsi);
4735 err_setup_tx:
4736         i40e_vsi_free_tx_resources(vsi);
4737         if (vsi == pf->vsi[pf->lan_vsi])
4738                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4739
4740         return err;
4741 }
4742
4743 /**
4744  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4745  * @pf: Pointer to pf
4746  *
4747  * This function destroys the hlist where all the Flow Director
4748  * filters were saved.
4749  **/
4750 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4751 {
4752         struct i40e_fdir_filter *filter;
4753         struct hlist_node *node2;
4754
4755         hlist_for_each_entry_safe(filter, node2,
4756                                   &pf->fdir_filter_list, fdir_node) {
4757                 hlist_del(&filter->fdir_node);
4758                 kfree(filter);
4759         }
4760         pf->fdir_pf_active_filters = 0;
4761 }
4762
4763 /**
4764  * i40e_close - Disables a network interface
4765  * @netdev: network interface device structure
4766  *
4767  * The close entry point is called when an interface is de-activated
4768  * by the OS.  The hardware is still under the driver's control, but
4769  * this netdev interface is disabled.
4770  *
4771  * Returns 0, this is not allowed to fail
4772  **/
4773 #ifdef I40E_FCOE
4774 int i40e_close(struct net_device *netdev)
4775 #else
4776 static int i40e_close(struct net_device *netdev)
4777 #endif
4778 {
4779         struct i40e_netdev_priv *np = netdev_priv(netdev);
4780         struct i40e_vsi *vsi = np->vsi;
4781
4782         i40e_vsi_close(vsi);
4783
4784         return 0;
4785 }
4786
4787 /**
4788  * i40e_do_reset - Start a PF or Core Reset sequence
4789  * @pf: board private structure
4790  * @reset_flags: which reset is requested
4791  *
4792  * The essential difference in resets is that the PF Reset
4793  * doesn't clear the packet buffers, doesn't reset the PE
4794  * firmware, and doesn't bother the other PFs on the chip.
4795  **/
4796 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
4797 {
4798         u32 val;
4799
4800         WARN_ON(in_interrupt());
4801
4802         if (i40e_check_asq_alive(&pf->hw))
4803                 i40e_vc_notify_reset(pf);
4804
4805         /* do the biggest reset indicated */
4806         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
4807
4808                 /* Request a Global Reset
4809                  *
4810                  * This will start the chip's countdown to the actual full
4811                  * chip reset event, and a warning interrupt to be sent
4812                  * to all PFs, including the requestor.  Our handler
4813                  * for the warning interrupt will deal with the shutdown
4814                  * and recovery of the switch setup.
4815                  */
4816                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
4817                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4818                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
4819                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4820
4821         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
4822
4823                 /* Request a Core Reset
4824                  *
4825                  * Same as Global Reset, except does *not* include the MAC/PHY
4826                  */
4827                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
4828                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4829                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
4830                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4831                 i40e_flush(&pf->hw);
4832
4833         } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
4834
4835                 /* Request a Firmware Reset
4836                  *
4837                  * Same as Global reset, plus restarting the
4838                  * embedded firmware engine.
4839                  */
4840                 /* enable EMP Reset */
4841                 val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
4842                 val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
4843                 wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
4844
4845                 /* force the reset */
4846                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4847                 val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
4848                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4849                 i40e_flush(&pf->hw);
4850
4851         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
4852
4853                 /* Request a PF Reset
4854                  *
4855                  * Resets only the PF-specific registers
4856                  *
4857                  * This goes directly to the tear-down and rebuild of
4858                  * the switch, since we need to do all the recovery as
4859                  * for the Core Reset.
4860                  */
4861                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
4862                 i40e_handle_reset_warning(pf);
4863
4864         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
4865                 int v;
4866
4867                 /* Find the VSI(s) that requested a re-init */
4868                 dev_info(&pf->pdev->dev,
4869                          "VSI reinit requested\n");
4870                 for (v = 0; v < pf->num_alloc_vsi; v++) {
4871                         struct i40e_vsi *vsi = pf->vsi[v];
4872                         if (vsi != NULL &&
4873                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
4874                                 i40e_vsi_reinit_locked(pf->vsi[v]);
4875                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
4876                         }
4877                 }
4878
4879                 /* no further action needed, so return now */
4880                 return;
4881         } else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
4882                 int v;
4883
4884                 /* Find the VSI(s) that needs to be brought down */
4885                 dev_info(&pf->pdev->dev, "VSI down requested\n");
4886                 for (v = 0; v < pf->num_alloc_vsi; v++) {
4887                         struct i40e_vsi *vsi = pf->vsi[v];
4888                         if (vsi != NULL &&
4889                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
4890                                 set_bit(__I40E_DOWN, &vsi->state);
4891                                 i40e_down(vsi);
4892                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
4893                         }
4894                 }
4895
4896                 /* no further action needed, so return now */
4897                 return;
4898         } else {
4899                 dev_info(&pf->pdev->dev,
4900                          "bad reset request 0x%08x\n", reset_flags);
4901                 return;
4902         }
4903 }
4904
4905 #ifdef CONFIG_I40E_DCB
4906 /**
4907  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
4908  * @pf: board private structure
4909  * @old_cfg: current DCB config
4910  * @new_cfg: new DCB config
4911  **/
4912 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
4913                             struct i40e_dcbx_config *old_cfg,
4914                             struct i40e_dcbx_config *new_cfg)
4915 {
4916         bool need_reconfig = false;
4917
4918         /* Check if ETS configuration has changed */
4919         if (memcmp(&new_cfg->etscfg,
4920                    &old_cfg->etscfg,
4921                    sizeof(new_cfg->etscfg))) {
4922                 /* If Priority Table has changed reconfig is needed */
4923                 if (memcmp(&new_cfg->etscfg.prioritytable,
4924                            &old_cfg->etscfg.prioritytable,
4925                            sizeof(new_cfg->etscfg.prioritytable))) {
4926                         need_reconfig = true;
4927                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
4928                 }
4929
4930                 if (memcmp(&new_cfg->etscfg.tcbwtable,
4931                            &old_cfg->etscfg.tcbwtable,
4932                            sizeof(new_cfg->etscfg.tcbwtable)))
4933                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
4934
4935                 if (memcmp(&new_cfg->etscfg.tsatable,
4936                            &old_cfg->etscfg.tsatable,
4937                            sizeof(new_cfg->etscfg.tsatable)))
4938                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
4939         }
4940
4941         /* Check if PFC configuration has changed */
4942         if (memcmp(&new_cfg->pfc,
4943                    &old_cfg->pfc,
4944                    sizeof(new_cfg->pfc))) {
4945                 need_reconfig = true;
4946                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
4947         }
4948
4949         /* Check if APP Table has changed */
4950         if (memcmp(&new_cfg->app,
4951                    &old_cfg->app,
4952                    sizeof(new_cfg->app))) {
4953                 need_reconfig = true;
4954                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
4955         }
4956
4957         return need_reconfig;
4958 }
4959
4960 /**
4961  * i40e_handle_lldp_event - Handle LLDP Change MIB event
4962  * @pf: board private structure
4963  * @e: event info posted on ARQ
4964  **/
4965 static int i40e_handle_lldp_event(struct i40e_pf *pf,
4966                                   struct i40e_arq_event_info *e)
4967 {
4968         struct i40e_aqc_lldp_get_mib *mib =
4969                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
4970         struct i40e_hw *hw = &pf->hw;
4971         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
4972         struct i40e_dcbx_config tmp_dcbx_cfg;
4973         bool need_reconfig = false;
4974         int ret = 0;
4975         u8 type;
4976
4977         /* Not DCB capable or capability disabled */
4978         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
4979                 return ret;
4980
4981         /* Ignore if event is not for Nearest Bridge */
4982         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
4983                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
4984         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
4985                 return ret;
4986
4987         /* Check MIB Type and return if event for Remote MIB update */
4988         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
4989         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
4990                 /* Update the remote cached instance and return */
4991                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
4992                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
4993                                 &hw->remote_dcbx_config);
4994                 goto exit;
4995         }
4996
4997         /* Convert/store the DCBX data from LLDPDU temporarily */
4998         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
4999         ret = i40e_lldp_to_dcb_config(e->msg_buf, &tmp_dcbx_cfg);
5000         if (ret) {
5001                 /* Error in LLDPDU parsing return */
5002                 dev_info(&pf->pdev->dev, "Failed parsing LLDPDU from event buffer\n");
5003                 goto exit;
5004         }
5005
5006         /* No change detected in DCBX configs */
5007         if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
5008                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5009                 goto exit;
5010         }
5011
5012         need_reconfig = i40e_dcb_need_reconfig(pf, dcbx_cfg, &tmp_dcbx_cfg);
5013
5014         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg);
5015
5016         /* Overwrite the new configuration */
5017         *dcbx_cfg = tmp_dcbx_cfg;
5018
5019         if (!need_reconfig)
5020                 goto exit;
5021
5022         /* Enable DCB tagging only when more than one TC */
5023         if (i40e_dcb_get_num_tc(dcbx_cfg) > 1)
5024                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5025         else
5026                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5027
5028         /* Reconfiguration needed quiesce all VSIs */
5029         i40e_pf_quiesce_all_vsi(pf);
5030
5031         /* Changes in configuration update VEB/VSI */
5032         i40e_dcb_reconfigure(pf);
5033
5034         i40e_pf_unquiesce_all_vsi(pf);
5035 exit:
5036         return ret;
5037 }
5038 #endif /* CONFIG_I40E_DCB */
5039
5040 /**
5041  * i40e_do_reset_safe - Protected reset path for userland calls.
5042  * @pf: board private structure
5043  * @reset_flags: which reset is requested
5044  *
5045  **/
5046 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5047 {
5048         rtnl_lock();
5049         i40e_do_reset(pf, reset_flags);
5050         rtnl_unlock();
5051 }
5052
5053 /**
5054  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5055  * @pf: board private structure
5056  * @e: event info posted on ARQ
5057  *
5058  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5059  * and VF queues
5060  **/
5061 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5062                                            struct i40e_arq_event_info *e)
5063 {
5064         struct i40e_aqc_lan_overflow *data =
5065                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5066         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5067         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5068         struct i40e_hw *hw = &pf->hw;
5069         struct i40e_vf *vf;
5070         u16 vf_id;
5071
5072         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5073                 queue, qtx_ctl);
5074
5075         /* Queue belongs to VF, find the VF and issue VF reset */
5076         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5077             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5078                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5079                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5080                 vf_id -= hw->func_caps.vf_base_id;
5081                 vf = &pf->vf[vf_id];
5082                 i40e_vc_notify_vf_reset(vf);
5083                 /* Allow VF to process pending reset notification */
5084                 msleep(20);
5085                 i40e_reset_vf(vf, false);
5086         }
5087 }
5088
5089 /**
5090  * i40e_service_event_complete - Finish up the service event
5091  * @pf: board private structure
5092  **/
5093 static void i40e_service_event_complete(struct i40e_pf *pf)
5094 {
5095         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5096
5097         /* flush memory to make sure state is correct before next watchog */
5098         smp_mb__before_atomic();
5099         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5100 }
5101
5102 /**
5103  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5104  * @pf: board private structure
5105  **/
5106 int i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5107 {
5108         int val, fcnt_prog;
5109
5110         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5111         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5112         return fcnt_prog;
5113 }
5114
5115 /**
5116  * i40e_get_current_fd_count - Get the count of total FD filters programmed
5117  * @pf: board private structure
5118  **/
5119 int i40e_get_current_fd_count(struct i40e_pf *pf)
5120 {
5121         int val, fcnt_prog;
5122         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5123         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5124                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5125                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5126         return fcnt_prog;
5127 }
5128 /**
5129  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5130  * @pf: board private structure
5131  **/
5132 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5133 {
5134         u32 fcnt_prog, fcnt_avail;
5135
5136         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5137          * to re-enable
5138          */
5139         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5140             (pf->flags & I40E_FLAG_FD_SB_ENABLED))
5141                 return;
5142         fcnt_prog = i40e_get_cur_guaranteed_fd_count(pf);
5143         fcnt_avail = pf->fdir_pf_filter_count;
5144         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) {
5145                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5146                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5147                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5148                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5149                 }
5150         }
5151         /* Wait for some more space to be available to turn on ATR */
5152         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5153                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5154                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5155                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5156                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5157                 }
5158         }
5159 }
5160
5161 /**
5162  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5163  * @pf: board private structure
5164  **/
5165 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5166 {
5167         if (!(pf->flags & I40E_FLAG_FDIR_REQUIRES_REINIT))
5168                 return;
5169
5170         /* if interface is down do nothing */
5171         if (test_bit(__I40E_DOWN, &pf->state))
5172                 return;
5173         i40e_fdir_check_and_reenable(pf);
5174
5175         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5176             (pf->flags & I40E_FLAG_FD_SB_ENABLED))
5177                 pf->flags &= ~I40E_FLAG_FDIR_REQUIRES_REINIT;
5178 }
5179
5180 /**
5181  * i40e_vsi_link_event - notify VSI of a link event
5182  * @vsi: vsi to be notified
5183  * @link_up: link up or down
5184  **/
5185 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5186 {
5187         if (!vsi)
5188                 return;
5189
5190         switch (vsi->type) {
5191         case I40E_VSI_MAIN:
5192 #ifdef I40E_FCOE
5193         case I40E_VSI_FCOE:
5194 #endif
5195                 if (!vsi->netdev || !vsi->netdev_registered)
5196                         break;
5197
5198                 if (link_up) {
5199                         netif_carrier_on(vsi->netdev);
5200                         netif_tx_wake_all_queues(vsi->netdev);
5201                 } else {
5202                         netif_carrier_off(vsi->netdev);
5203                         netif_tx_stop_all_queues(vsi->netdev);
5204                 }
5205                 break;
5206
5207         case I40E_VSI_SRIOV:
5208                 break;
5209
5210         case I40E_VSI_VMDQ2:
5211         case I40E_VSI_CTRL:
5212         case I40E_VSI_MIRROR:
5213         default:
5214                 /* there is no notification for other VSIs */
5215                 break;
5216         }
5217 }
5218
5219 /**
5220  * i40e_veb_link_event - notify elements on the veb of a link event
5221  * @veb: veb to be notified
5222  * @link_up: link up or down
5223  **/
5224 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5225 {
5226         struct i40e_pf *pf;
5227         int i;
5228
5229         if (!veb || !veb->pf)
5230                 return;
5231         pf = veb->pf;
5232
5233         /* depth first... */
5234         for (i = 0; i < I40E_MAX_VEB; i++)
5235                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5236                         i40e_veb_link_event(pf->veb[i], link_up);
5237
5238         /* ... now the local VSIs */
5239         for (i = 0; i < pf->num_alloc_vsi; i++)
5240                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5241                         i40e_vsi_link_event(pf->vsi[i], link_up);
5242 }
5243
5244 /**
5245  * i40e_link_event - Update netif_carrier status
5246  * @pf: board private structure
5247  **/
5248 static void i40e_link_event(struct i40e_pf *pf)
5249 {
5250         bool new_link, old_link;
5251
5252         new_link = (pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP);
5253         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5254
5255         if (new_link == old_link)
5256                 return;
5257         if (!test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state))
5258                 i40e_print_link_message(pf->vsi[pf->lan_vsi], new_link);
5259
5260         /* Notify the base of the switch tree connected to
5261          * the link.  Floating VEBs are not notified.
5262          */
5263         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5264                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5265         else
5266                 i40e_vsi_link_event(pf->vsi[pf->lan_vsi], new_link);
5267
5268         if (pf->vf)
5269                 i40e_vc_notify_link_state(pf);
5270
5271         if (pf->flags & I40E_FLAG_PTP)
5272                 i40e_ptp_set_increment(pf);
5273 }
5274
5275 /**
5276  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5277  * @pf: board private structure
5278  *
5279  * Set the per-queue flags to request a check for stuck queues in the irq
5280  * clean functions, then force interrupts to be sure the irq clean is called.
5281  **/
5282 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5283 {
5284         int i, v;
5285
5286         /* If we're down or resetting, just bail */
5287         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
5288                 return;
5289
5290         /* for each VSI/netdev
5291          *     for each Tx queue
5292          *         set the check flag
5293          *     for each q_vector
5294          *         force an interrupt
5295          */
5296         for (v = 0; v < pf->num_alloc_vsi; v++) {
5297                 struct i40e_vsi *vsi = pf->vsi[v];
5298                 int armed = 0;
5299
5300                 if (!pf->vsi[v] ||
5301                     test_bit(__I40E_DOWN, &vsi->state) ||
5302                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5303                         continue;
5304
5305                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5306                         set_check_for_tx_hang(vsi->tx_rings[i]);
5307                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5308                                      &vsi->tx_rings[i]->state))
5309                                 armed++;
5310                 }
5311
5312                 if (armed) {
5313                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5314                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5315                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5316                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
5317                         } else {
5318                                 u16 vec = vsi->base_vector - 1;
5319                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5320                                            I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
5321                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5322                                         wr32(&vsi->back->hw,
5323                                              I40E_PFINT_DYN_CTLN(vec), val);
5324                         }
5325                         i40e_flush(&vsi->back->hw);
5326                 }
5327         }
5328 }
5329
5330 /**
5331  * i40e_watchdog_subtask - Check and bring link up
5332  * @pf: board private structure
5333  **/
5334 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5335 {
5336         int i;
5337
5338         /* if interface is down do nothing */
5339         if (test_bit(__I40E_DOWN, &pf->state) ||
5340             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5341                 return;
5342
5343         /* Update the stats for active netdevs so the network stack
5344          * can look at updated numbers whenever it cares to
5345          */
5346         for (i = 0; i < pf->num_alloc_vsi; i++)
5347                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5348                         i40e_update_stats(pf->vsi[i]);
5349
5350         /* Update the stats for the active switching components */
5351         for (i = 0; i < I40E_MAX_VEB; i++)
5352                 if (pf->veb[i])
5353                         i40e_update_veb_stats(pf->veb[i]);
5354
5355         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5356 }
5357
5358 /**
5359  * i40e_reset_subtask - Set up for resetting the device and driver
5360  * @pf: board private structure
5361  **/
5362 static void i40e_reset_subtask(struct i40e_pf *pf)
5363 {
5364         u32 reset_flags = 0;
5365
5366         rtnl_lock();
5367         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5368                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5369                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5370         }
5371         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5372                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5373                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5374         }
5375         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5376                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5377                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5378         }
5379         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5380                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5381                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5382         }
5383         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5384                 reset_flags |= (1 << __I40E_DOWN_REQUESTED);
5385                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5386         }
5387
5388         /* If there's a recovery already waiting, it takes
5389          * precedence before starting a new reset sequence.
5390          */
5391         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5392                 i40e_handle_reset_warning(pf);
5393                 goto unlock;
5394         }
5395
5396         /* If we're already down or resetting, just bail */
5397         if (reset_flags &&
5398             !test_bit(__I40E_DOWN, &pf->state) &&
5399             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5400                 i40e_do_reset(pf, reset_flags);
5401
5402 unlock:
5403         rtnl_unlock();
5404 }
5405
5406 /**
5407  * i40e_handle_link_event - Handle link event
5408  * @pf: board private structure
5409  * @e: event info posted on ARQ
5410  **/
5411 static void i40e_handle_link_event(struct i40e_pf *pf,
5412                                    struct i40e_arq_event_info *e)
5413 {
5414         struct i40e_hw *hw = &pf->hw;
5415         struct i40e_aqc_get_link_status *status =
5416                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5417         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
5418
5419         /* save off old link status information */
5420         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
5421                sizeof(pf->hw.phy.link_info_old));
5422
5423         /* update link status */
5424         hw_link_info->phy_type = (enum i40e_aq_phy_type)status->phy_type;
5425         hw_link_info->link_speed = (enum i40e_aq_link_speed)status->link_speed;
5426         hw_link_info->link_info = status->link_info;
5427         hw_link_info->an_info = status->an_info;
5428         hw_link_info->ext_info = status->ext_info;
5429         hw_link_info->lse_enable =
5430                 le16_to_cpu(status->command_flags) &
5431                             I40E_AQ_LSE_ENABLE;
5432
5433         /* process the event */
5434         i40e_link_event(pf);
5435
5436         /* Do a new status request to re-enable LSE reporting
5437          * and load new status information into the hw struct,
5438          * then see if the status changed while processing the
5439          * initial event.
5440          */
5441         i40e_update_link_info(&pf->hw, true);
5442         i40e_link_event(pf);
5443 }
5444
5445 /**
5446  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5447  * @pf: board private structure
5448  **/
5449 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5450 {
5451         struct i40e_arq_event_info event;
5452         struct i40e_hw *hw = &pf->hw;
5453         u16 pending, i = 0;
5454         i40e_status ret;
5455         u16 opcode;
5456         u32 oldval;
5457         u32 val;
5458
5459         /* check for error indications */
5460         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5461         oldval = val;
5462         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5463                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5464                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5465         }
5466         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5467                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5468                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5469         }
5470         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5471                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5472                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5473         }
5474         if (oldval != val)
5475                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5476
5477         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5478         oldval = val;
5479         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5480                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5481                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5482         }
5483         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5484                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5485                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5486         }
5487         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5488                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5489                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5490         }
5491         if (oldval != val)
5492                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5493
5494         event.msg_size = I40E_MAX_AQ_BUF_SIZE;
5495         event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
5496         if (!event.msg_buf)
5497                 return;
5498
5499         do {
5500                 event.msg_size = I40E_MAX_AQ_BUF_SIZE; /* reinit each time */
5501                 ret = i40e_clean_arq_element(hw, &event, &pending);
5502                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
5503                         break;
5504                 else if (ret) {
5505                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5506                         break;
5507                 }
5508
5509                 opcode = le16_to_cpu(event.desc.opcode);
5510                 switch (opcode) {
5511
5512                 case i40e_aqc_opc_get_link_status:
5513                         i40e_handle_link_event(pf, &event);
5514                         break;
5515                 case i40e_aqc_opc_send_msg_to_pf:
5516                         ret = i40e_vc_process_vf_msg(pf,
5517                                         le16_to_cpu(event.desc.retval),
5518                                         le32_to_cpu(event.desc.cookie_high),
5519                                         le32_to_cpu(event.desc.cookie_low),
5520                                         event.msg_buf,
5521                                         event.msg_size);
5522                         break;
5523                 case i40e_aqc_opc_lldp_update_mib:
5524                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5525 #ifdef CONFIG_I40E_DCB
5526                         rtnl_lock();
5527                         ret = i40e_handle_lldp_event(pf, &event);
5528                         rtnl_unlock();
5529 #endif /* CONFIG_I40E_DCB */
5530                         break;
5531                 case i40e_aqc_opc_event_lan_overflow:
5532                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5533                         i40e_handle_lan_overflow_event(pf, &event);
5534                         break;
5535                 case i40e_aqc_opc_send_msg_to_peer:
5536                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5537                         break;
5538                 default:
5539                         dev_info(&pf->pdev->dev,
5540                                  "ARQ Error: Unknown event 0x%04x received\n",
5541                                  opcode);
5542                         break;
5543                 }
5544         } while (pending && (i++ < pf->adminq_work_limit));
5545
5546         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5547         /* re-enable Admin queue interrupt cause */
5548         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5549         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5550         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5551         i40e_flush(hw);
5552
5553         kfree(event.msg_buf);
5554 }
5555
5556 /**
5557  * i40e_verify_eeprom - make sure eeprom is good to use
5558  * @pf: board private structure
5559  **/
5560 static void i40e_verify_eeprom(struct i40e_pf *pf)
5561 {
5562         int err;
5563
5564         err = i40e_diag_eeprom_test(&pf->hw);
5565         if (err) {
5566                 /* retry in case of garbage read */
5567                 err = i40e_diag_eeprom_test(&pf->hw);
5568                 if (err) {
5569                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5570                                  err);
5571                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5572                 }
5573         }
5574
5575         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5576                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5577                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5578         }
5579 }
5580
5581 /**
5582  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5583  * @veb: pointer to the VEB instance
5584  *
5585  * This is a recursive function that first builds the attached VSIs then
5586  * recurses in to build the next layer of VEB.  We track the connections
5587  * through our own index numbers because the seid's from the HW could
5588  * change across the reset.
5589  **/
5590 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5591 {
5592         struct i40e_vsi *ctl_vsi = NULL;
5593         struct i40e_pf *pf = veb->pf;
5594         int v, veb_idx;
5595         int ret;
5596
5597         /* build VSI that owns this VEB, temporarily attached to base VEB */
5598         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
5599                 if (pf->vsi[v] &&
5600                     pf->vsi[v]->veb_idx == veb->idx &&
5601                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5602                         ctl_vsi = pf->vsi[v];
5603                         break;
5604                 }
5605         }
5606         if (!ctl_vsi) {
5607                 dev_info(&pf->pdev->dev,
5608                          "missing owner VSI for veb_idx %d\n", veb->idx);
5609                 ret = -ENOENT;
5610                 goto end_reconstitute;
5611         }
5612         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5613                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5614         ret = i40e_add_vsi(ctl_vsi);
5615         if (ret) {
5616                 dev_info(&pf->pdev->dev,
5617                          "rebuild of owner VSI failed: %d\n", ret);
5618                 goto end_reconstitute;
5619         }
5620         i40e_vsi_reset_stats(ctl_vsi);
5621
5622         /* create the VEB in the switch and move the VSI onto the VEB */
5623         ret = i40e_add_veb(veb, ctl_vsi);
5624         if (ret)
5625                 goto end_reconstitute;
5626
5627         /* create the remaining VSIs attached to this VEB */
5628         for (v = 0; v < pf->num_alloc_vsi; v++) {
5629                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5630                         continue;
5631
5632                 if (pf->vsi[v]->veb_idx == veb->idx) {
5633                         struct i40e_vsi *vsi = pf->vsi[v];
5634                         vsi->uplink_seid = veb->seid;
5635                         ret = i40e_add_vsi(vsi);
5636                         if (ret) {
5637                                 dev_info(&pf->pdev->dev,
5638                                          "rebuild of vsi_idx %d failed: %d\n",
5639                                          v, ret);
5640                                 goto end_reconstitute;
5641                         }
5642                         i40e_vsi_reset_stats(vsi);
5643                 }
5644         }
5645
5646         /* create any VEBs attached to this VEB - RECURSION */
5647         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5648                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5649                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5650                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5651                         if (ret)
5652                                 break;
5653                 }
5654         }
5655
5656 end_reconstitute:
5657         return ret;
5658 }
5659
5660 /**
5661  * i40e_get_capabilities - get info about the HW
5662  * @pf: the PF struct
5663  **/
5664 static int i40e_get_capabilities(struct i40e_pf *pf)
5665 {
5666         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5667         u16 data_size;
5668         int buf_len;
5669         int err;
5670
5671         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5672         do {
5673                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5674                 if (!cap_buf)
5675                         return -ENOMEM;
5676
5677                 /* this loads the data into the hw struct for us */
5678                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5679                                             &data_size,
5680                                             i40e_aqc_opc_list_func_capabilities,
5681                                             NULL);
5682                 /* data loaded, buffer no longer needed */
5683                 kfree(cap_buf);
5684
5685                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
5686                         /* retry with a larger buffer */
5687                         buf_len = data_size;
5688                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
5689                         dev_info(&pf->pdev->dev,
5690                                  "capability discovery failed: aq=%d\n",
5691                                  pf->hw.aq.asq_last_status);
5692                         return -ENODEV;
5693                 }
5694         } while (err);
5695
5696         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
5697             (pf->hw.aq.fw_maj_ver < 2)) {
5698                 pf->hw.func_caps.num_msix_vectors++;
5699                 pf->hw.func_caps.num_msix_vectors_vf++;
5700         }
5701
5702         if (pf->hw.debug_mask & I40E_DEBUG_USER)
5703                 dev_info(&pf->pdev->dev,
5704                          "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",
5705                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
5706                          pf->hw.func_caps.num_msix_vectors,
5707                          pf->hw.func_caps.num_msix_vectors_vf,
5708                          pf->hw.func_caps.fd_filters_guaranteed,
5709                          pf->hw.func_caps.fd_filters_best_effort,
5710                          pf->hw.func_caps.num_tx_qp,
5711                          pf->hw.func_caps.num_vsis);
5712
5713 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
5714                        + pf->hw.func_caps.num_vfs)
5715         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
5716                 dev_info(&pf->pdev->dev,
5717                          "got num_vsis %d, setting num_vsis to %d\n",
5718                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
5719                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
5720         }
5721
5722         return 0;
5723 }
5724
5725 static int i40e_vsi_clear(struct i40e_vsi *vsi);
5726
5727 /**
5728  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
5729  * @pf: board private structure
5730  **/
5731 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
5732 {
5733         struct i40e_vsi *vsi;
5734         int i;
5735
5736         /* quick workaround for an NVM issue that leaves a critical register
5737          * uninitialized
5738          */
5739         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
5740                 static const u32 hkey[] = {
5741                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
5742                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
5743                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
5744                         0x95b3a76d};
5745
5746                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
5747                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
5748         }
5749
5750         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
5751                 return;
5752
5753         /* find existing VSI and see if it needs configuring */
5754         vsi = NULL;
5755         for (i = 0; i < pf->num_alloc_vsi; i++) {
5756                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5757                         vsi = pf->vsi[i];
5758                         break;
5759                 }
5760         }
5761
5762         /* create a new VSI if none exists */
5763         if (!vsi) {
5764                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
5765                                      pf->vsi[pf->lan_vsi]->seid, 0);
5766                 if (!vsi) {
5767                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
5768                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
5769                         return;
5770                 }
5771         }
5772
5773         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
5774 }
5775
5776 /**
5777  * i40e_fdir_teardown - release the Flow Director resources
5778  * @pf: board private structure
5779  **/
5780 static void i40e_fdir_teardown(struct i40e_pf *pf)
5781 {
5782         int i;
5783
5784         i40e_fdir_filter_exit(pf);
5785         for (i = 0; i < pf->num_alloc_vsi; i++) {
5786                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5787                         i40e_vsi_release(pf->vsi[i]);
5788                         break;
5789                 }
5790         }
5791 }
5792
5793 /**
5794  * i40e_prep_for_reset - prep for the core to reset
5795  * @pf: board private structure
5796  *
5797  * Close up the VFs and other things in prep for pf Reset.
5798   **/
5799 static void i40e_prep_for_reset(struct i40e_pf *pf)
5800 {
5801         struct i40e_hw *hw = &pf->hw;
5802         i40e_status ret = 0;
5803         u32 v;
5804
5805         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
5806         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
5807                 return;
5808
5809         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
5810
5811         /* quiesce the VSIs and their queues that are not already DOWN */
5812         i40e_pf_quiesce_all_vsi(pf);
5813
5814         for (v = 0; v < pf->num_alloc_vsi; v++) {
5815                 if (pf->vsi[v])
5816                         pf->vsi[v]->seid = 0;
5817         }
5818
5819         i40e_shutdown_adminq(&pf->hw);
5820
5821         /* call shutdown HMC */
5822         if (hw->hmc.hmc_obj) {
5823                 ret = i40e_shutdown_lan_hmc(hw);
5824                 if (ret)
5825                         dev_warn(&pf->pdev->dev,
5826                                  "shutdown_lan_hmc failed: %d\n", ret);
5827         }
5828 }
5829
5830 /**
5831  * i40e_send_version - update firmware with driver version
5832  * @pf: PF struct
5833  */
5834 static void i40e_send_version(struct i40e_pf *pf)
5835 {
5836         struct i40e_driver_version dv;
5837
5838         dv.major_version = DRV_VERSION_MAJOR;
5839         dv.minor_version = DRV_VERSION_MINOR;
5840         dv.build_version = DRV_VERSION_BUILD;
5841         dv.subbuild_version = 0;
5842         strncpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
5843         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
5844 }
5845
5846 /**
5847  * i40e_reset_and_rebuild - reset and rebuild using a saved config
5848  * @pf: board private structure
5849  * @reinit: if the Main VSI needs to re-initialized.
5850  **/
5851 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
5852 {
5853         struct i40e_hw *hw = &pf->hw;
5854         i40e_status ret;
5855         u32 v;
5856
5857         /* Now we wait for GRST to settle out.
5858          * We don't have to delete the VEBs or VSIs from the hw switch
5859          * because the reset will make them disappear.
5860          */
5861         ret = i40e_pf_reset(hw);
5862         if (ret) {
5863                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
5864                 goto end_core_reset;
5865         }
5866         pf->pfr_count++;
5867
5868         if (test_bit(__I40E_DOWN, &pf->state))
5869                 goto end_core_reset;
5870         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
5871
5872         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
5873         ret = i40e_init_adminq(&pf->hw);
5874         if (ret) {
5875                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
5876                 goto end_core_reset;
5877         }
5878
5879         /* re-verify the eeprom if we just had an EMP reset */
5880         if (test_bit(__I40E_EMP_RESET_REQUESTED, &pf->state)) {
5881                 clear_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
5882                 i40e_verify_eeprom(pf);
5883         }
5884
5885         i40e_clear_pxe_mode(hw);
5886         ret = i40e_get_capabilities(pf);
5887         if (ret) {
5888                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
5889                          ret);
5890                 goto end_core_reset;
5891         }
5892
5893         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
5894                                 hw->func_caps.num_rx_qp,
5895                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
5896         if (ret) {
5897                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
5898                 goto end_core_reset;
5899         }
5900         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
5901         if (ret) {
5902                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
5903                 goto end_core_reset;
5904         }
5905
5906 #ifdef CONFIG_I40E_DCB
5907         ret = i40e_init_pf_dcb(pf);
5908         if (ret) {
5909                 dev_info(&pf->pdev->dev, "init_pf_dcb failed: %d\n", ret);
5910                 goto end_core_reset;
5911         }
5912 #endif /* CONFIG_I40E_DCB */
5913 #ifdef I40E_FCOE
5914         ret = i40e_init_pf_fcoe(pf);
5915         if (ret)
5916                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
5917
5918 #endif
5919         /* do basic switch setup */
5920         ret = i40e_setup_pf_switch(pf, reinit);
5921         if (ret)
5922                 goto end_core_reset;
5923
5924         /* Rebuild the VSIs and VEBs that existed before reset.
5925          * They are still in our local switch element arrays, so only
5926          * need to rebuild the switch model in the HW.
5927          *
5928          * If there were VEBs but the reconstitution failed, we'll try
5929          * try to recover minimal use by getting the basic PF VSI working.
5930          */
5931         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
5932                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
5933                 /* find the one VEB connected to the MAC, and find orphans */
5934                 for (v = 0; v < I40E_MAX_VEB; v++) {
5935                         if (!pf->veb[v])
5936                                 continue;
5937
5938                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
5939                             pf->veb[v]->uplink_seid == 0) {
5940                                 ret = i40e_reconstitute_veb(pf->veb[v]);
5941
5942                                 if (!ret)
5943                                         continue;
5944
5945                                 /* If Main VEB failed, we're in deep doodoo,
5946                                  * so give up rebuilding the switch and set up
5947                                  * for minimal rebuild of PF VSI.
5948                                  * If orphan failed, we'll report the error
5949                                  * but try to keep going.
5950                                  */
5951                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
5952                                         dev_info(&pf->pdev->dev,
5953                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
5954                                                  ret);
5955                                         pf->vsi[pf->lan_vsi]->uplink_seid
5956                                                                 = pf->mac_seid;
5957                                         break;
5958                                 } else if (pf->veb[v]->uplink_seid == 0) {
5959                                         dev_info(&pf->pdev->dev,
5960                                                  "rebuild of orphan VEB failed: %d\n",
5961                                                  ret);
5962                                 }
5963                         }
5964                 }
5965         }
5966
5967         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
5968                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
5969                 /* no VEB, so rebuild only the Main VSI */
5970                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
5971                 if (ret) {
5972                         dev_info(&pf->pdev->dev,
5973                                  "rebuild of Main VSI failed: %d\n", ret);
5974                         goto end_core_reset;
5975                 }
5976         }
5977
5978         /* reinit the misc interrupt */
5979         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5980                 ret = i40e_setup_misc_vector(pf);
5981
5982         /* restart the VSIs that were rebuilt and running before the reset */
5983         i40e_pf_unquiesce_all_vsi(pf);
5984
5985         if (pf->num_alloc_vfs) {
5986                 for (v = 0; v < pf->num_alloc_vfs; v++)
5987                         i40e_reset_vf(&pf->vf[v], true);
5988         }
5989
5990         /* tell the firmware that we're starting */
5991         i40e_send_version(pf);
5992
5993 end_core_reset:
5994         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
5995 }
5996
5997 /**
5998  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
5999  * @pf: board private structure
6000  *
6001  * Close up the VFs and other things in prep for a Core Reset,
6002  * then get ready to rebuild the world.
6003  **/
6004 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6005 {
6006         i40e_prep_for_reset(pf);
6007         i40e_reset_and_rebuild(pf, false);
6008 }
6009
6010 /**
6011  * i40e_handle_mdd_event
6012  * @pf: pointer to the pf structure
6013  *
6014  * Called from the MDD irq handler to identify possibly malicious vfs
6015  **/
6016 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6017 {
6018         struct i40e_hw *hw = &pf->hw;
6019         bool mdd_detected = false;
6020         bool pf_mdd_detected = false;
6021         struct i40e_vf *vf;
6022         u32 reg;
6023         int i;
6024
6025         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6026                 return;
6027
6028         /* find what triggered the MDD event */
6029         reg = rd32(hw, I40E_GL_MDET_TX);
6030         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6031                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6032                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6033                 u8 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6034                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6035                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_SHIFT) >>
6036                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6037                 u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6038                                 I40E_GL_MDET_TX_QUEUE_SHIFT;
6039                 dev_info(&pf->pdev->dev,
6040                          "Malicious Driver Detection event 0x%02x on TX queue %d pf number 0x%02x vf number 0x%02x\n",
6041                          event, queue, pf_num, vf_num);
6042                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6043                 mdd_detected = true;
6044         }
6045         reg = rd32(hw, I40E_GL_MDET_RX);
6046         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6047                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6048                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6049                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_SHIFT) >>
6050                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6051                 u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6052                                 I40E_GL_MDET_RX_QUEUE_SHIFT;
6053                 dev_info(&pf->pdev->dev,
6054                          "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6055                          event, queue, func);
6056                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6057                 mdd_detected = true;
6058         }
6059
6060         if (mdd_detected) {
6061                 reg = rd32(hw, I40E_PF_MDET_TX);
6062                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6063                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6064                         dev_info(&pf->pdev->dev,
6065                                  "MDD TX event is for this function 0x%08x, requesting PF reset.\n",
6066                                  reg);
6067                         pf_mdd_detected = true;
6068                 }
6069                 reg = rd32(hw, I40E_PF_MDET_RX);
6070                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6071                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6072                         dev_info(&pf->pdev->dev,
6073                                  "MDD RX event is for this function 0x%08x, requesting PF reset.\n",
6074                                  reg);
6075                         pf_mdd_detected = true;
6076                 }
6077                 /* Queue belongs to the PF, initiate a reset */
6078                 if (pf_mdd_detected) {
6079                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6080                         i40e_service_event_schedule(pf);
6081                 }
6082         }
6083
6084         /* see if one of the VFs needs its hand slapped */
6085         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6086                 vf = &(pf->vf[i]);
6087                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6088                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6089                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6090                         vf->num_mdd_events++;
6091                         dev_info(&pf->pdev->dev, "MDD TX event on VF %d\n", i);
6092                 }
6093
6094                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6095                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6096                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6097                         vf->num_mdd_events++;
6098                         dev_info(&pf->pdev->dev, "MDD RX event on VF %d\n", i);
6099                 }
6100
6101                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6102                         dev_info(&pf->pdev->dev,
6103                                  "Too many MDD events on VF %d, disabled\n", i);
6104                         dev_info(&pf->pdev->dev,
6105                                  "Use PF Control I/F to re-enable the VF\n");
6106                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6107                 }
6108         }
6109
6110         /* re-enable mdd interrupt cause */
6111         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6112         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6113         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6114         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6115         i40e_flush(hw);
6116 }
6117
6118 #ifdef CONFIG_I40E_VXLAN
6119 /**
6120  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6121  * @pf: board private structure
6122  **/
6123 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6124 {
6125         struct i40e_hw *hw = &pf->hw;
6126         i40e_status ret;
6127         u8 filter_index;
6128         __be16 port;
6129         int i;
6130
6131         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6132                 return;
6133
6134         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6135
6136         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6137                 if (pf->pending_vxlan_bitmap & (1 << i)) {
6138                         pf->pending_vxlan_bitmap &= ~(1 << i);
6139                         port = pf->vxlan_ports[i];
6140                         ret = port ?
6141                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
6142                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6143                                                      &filter_index, NULL)
6144                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
6145
6146                         if (ret) {
6147                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
6148                                          port ? "adding" : "deleting",
6149                                          ntohs(port), port ? i : i);
6150
6151                                 pf->vxlan_ports[i] = 0;
6152                         } else {
6153                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
6154                                          port ? "Added" : "Deleted",
6155                                          ntohs(port), port ? i : filter_index);
6156                         }
6157                 }
6158         }
6159 }
6160
6161 #endif
6162 /**
6163  * i40e_service_task - Run the driver's async subtasks
6164  * @work: pointer to work_struct containing our data
6165  **/
6166 static void i40e_service_task(struct work_struct *work)
6167 {
6168         struct i40e_pf *pf = container_of(work,
6169                                           struct i40e_pf,
6170                                           service_task);
6171         unsigned long start_time = jiffies;
6172
6173         /* don't bother with service tasks if a reset is in progress */
6174         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6175                 i40e_service_event_complete(pf);
6176                 return;
6177         }
6178
6179         i40e_reset_subtask(pf);
6180         i40e_handle_mdd_event(pf);
6181         i40e_vc_process_vflr_event(pf);
6182         i40e_watchdog_subtask(pf);
6183         i40e_fdir_reinit_subtask(pf);
6184         i40e_check_hang_subtask(pf);
6185         i40e_sync_filters_subtask(pf);
6186 #ifdef CONFIG_I40E_VXLAN
6187         i40e_sync_vxlan_filters_subtask(pf);
6188 #endif
6189         i40e_clean_adminq_subtask(pf);
6190
6191         i40e_service_event_complete(pf);
6192
6193         /* If the tasks have taken longer than one timer cycle or there
6194          * is more work to be done, reschedule the service task now
6195          * rather than wait for the timer to tick again.
6196          */
6197         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6198             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6199             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6200             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6201                 i40e_service_event_schedule(pf);
6202 }
6203
6204 /**
6205  * i40e_service_timer - timer callback
6206  * @data: pointer to PF struct
6207  **/
6208 static void i40e_service_timer(unsigned long data)
6209 {
6210         struct i40e_pf *pf = (struct i40e_pf *)data;
6211
6212         mod_timer(&pf->service_timer,
6213                   round_jiffies(jiffies + pf->service_timer_period));
6214         i40e_service_event_schedule(pf);
6215 }
6216
6217 /**
6218  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6219  * @vsi: the VSI being configured
6220  **/
6221 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6222 {
6223         struct i40e_pf *pf = vsi->back;
6224
6225         switch (vsi->type) {
6226         case I40E_VSI_MAIN:
6227                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6228                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6229                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6230                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6231                         vsi->num_q_vectors = pf->num_lan_msix;
6232                 else
6233                         vsi->num_q_vectors = 1;
6234
6235                 break;
6236
6237         case I40E_VSI_FDIR:
6238                 vsi->alloc_queue_pairs = 1;
6239                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6240                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6241                 vsi->num_q_vectors = 1;
6242                 break;
6243
6244         case I40E_VSI_VMDQ2:
6245                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6246                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6247                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6248                 vsi->num_q_vectors = pf->num_vmdq_msix;
6249                 break;
6250
6251         case I40E_VSI_SRIOV:
6252                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6253                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6254                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6255                 break;
6256
6257 #ifdef I40E_FCOE
6258         case I40E_VSI_FCOE:
6259                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6260                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6261                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6262                 vsi->num_q_vectors = pf->num_fcoe_msix;
6263                 break;
6264
6265 #endif /* I40E_FCOE */
6266         default:
6267                 WARN_ON(1);
6268                 return -ENODATA;
6269         }
6270
6271         return 0;
6272 }
6273
6274 /**
6275  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6276  * @type: VSI pointer
6277  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6278  *
6279  * On error: returns error code (negative)
6280  * On success: returns 0
6281  **/
6282 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6283 {
6284         int size;
6285         int ret = 0;
6286
6287         /* allocate memory for both Tx and Rx ring pointers */
6288         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6289         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6290         if (!vsi->tx_rings)
6291                 return -ENOMEM;
6292         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6293
6294         if (alloc_qvectors) {
6295                 /* allocate memory for q_vector pointers */
6296                 size = sizeof(struct i40e_q_vectors *) * vsi->num_q_vectors;
6297                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6298                 if (!vsi->q_vectors) {
6299                         ret = -ENOMEM;
6300                         goto err_vectors;
6301                 }
6302         }
6303         return ret;
6304
6305 err_vectors:
6306         kfree(vsi->tx_rings);
6307         return ret;
6308 }
6309
6310 /**
6311  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6312  * @pf: board private structure
6313  * @type: type of VSI
6314  *
6315  * On error: returns error code (negative)
6316  * On success: returns vsi index in PF (positive)
6317  **/
6318 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6319 {
6320         int ret = -ENODEV;
6321         struct i40e_vsi *vsi;
6322         int vsi_idx;
6323         int i;
6324
6325         /* Need to protect the allocation of the VSIs at the PF level */
6326         mutex_lock(&pf->switch_mutex);
6327
6328         /* VSI list may be fragmented if VSI creation/destruction has
6329          * been happening.  We can afford to do a quick scan to look
6330          * for any free VSIs in the list.
6331          *
6332          * find next empty vsi slot, looping back around if necessary
6333          */
6334         i = pf->next_vsi;
6335         while (i < pf->num_alloc_vsi && pf->vsi[i])
6336                 i++;
6337         if (i >= pf->num_alloc_vsi) {
6338                 i = 0;
6339                 while (i < pf->next_vsi && pf->vsi[i])
6340                         i++;
6341         }
6342
6343         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6344                 vsi_idx = i;             /* Found one! */
6345         } else {
6346                 ret = -ENODEV;
6347                 goto unlock_pf;  /* out of VSI slots! */
6348         }
6349         pf->next_vsi = ++i;
6350
6351         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6352         if (!vsi) {
6353                 ret = -ENOMEM;
6354                 goto unlock_pf;
6355         }
6356         vsi->type = type;
6357         vsi->back = pf;
6358         set_bit(__I40E_DOWN, &vsi->state);
6359         vsi->flags = 0;
6360         vsi->idx = vsi_idx;
6361         vsi->rx_itr_setting = pf->rx_itr_default;
6362         vsi->tx_itr_setting = pf->tx_itr_default;
6363         vsi->netdev_registered = false;
6364         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6365         INIT_LIST_HEAD(&vsi->mac_filter_list);
6366         vsi->irqs_ready = false;
6367
6368         ret = i40e_set_num_rings_in_vsi(vsi);
6369         if (ret)
6370                 goto err_rings;
6371
6372         ret = i40e_vsi_alloc_arrays(vsi, true);
6373         if (ret)
6374                 goto err_rings;
6375
6376         /* Setup default MSIX irq handler for VSI */
6377         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6378
6379         pf->vsi[vsi_idx] = vsi;
6380         ret = vsi_idx;
6381         goto unlock_pf;
6382
6383 err_rings:
6384         pf->next_vsi = i - 1;
6385         kfree(vsi);
6386 unlock_pf:
6387         mutex_unlock(&pf->switch_mutex);
6388         return ret;
6389 }
6390
6391 /**
6392  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6393  * @type: VSI pointer
6394  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6395  *
6396  * On error: returns error code (negative)
6397  * On success: returns 0
6398  **/
6399 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6400 {
6401         /* free the ring and vector containers */
6402         if (free_qvectors) {
6403                 kfree(vsi->q_vectors);
6404                 vsi->q_vectors = NULL;
6405         }
6406         kfree(vsi->tx_rings);
6407         vsi->tx_rings = NULL;
6408         vsi->rx_rings = NULL;
6409 }
6410
6411 /**
6412  * i40e_vsi_clear - Deallocate the VSI provided
6413  * @vsi: the VSI being un-configured
6414  **/
6415 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6416 {
6417         struct i40e_pf *pf;
6418
6419         if (!vsi)
6420                 return 0;
6421
6422         if (!vsi->back)
6423                 goto free_vsi;
6424         pf = vsi->back;
6425
6426         mutex_lock(&pf->switch_mutex);
6427         if (!pf->vsi[vsi->idx]) {
6428                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6429                         vsi->idx, vsi->idx, vsi, vsi->type);
6430                 goto unlock_vsi;
6431         }
6432
6433         if (pf->vsi[vsi->idx] != vsi) {
6434                 dev_err(&pf->pdev->dev,
6435                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6436                         pf->vsi[vsi->idx]->idx,
6437                         pf->vsi[vsi->idx],
6438                         pf->vsi[vsi->idx]->type,
6439                         vsi->idx, vsi, vsi->type);
6440                 goto unlock_vsi;
6441         }
6442
6443         /* updates the pf for this cleared vsi */
6444         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6445         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6446
6447         i40e_vsi_free_arrays(vsi, true);
6448
6449         pf->vsi[vsi->idx] = NULL;
6450         if (vsi->idx < pf->next_vsi)
6451                 pf->next_vsi = vsi->idx;
6452
6453 unlock_vsi:
6454         mutex_unlock(&pf->switch_mutex);
6455 free_vsi:
6456         kfree(vsi);
6457
6458         return 0;
6459 }
6460
6461 /**
6462  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6463  * @vsi: the VSI being cleaned
6464  **/
6465 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6466 {
6467         int i;
6468
6469         if (vsi->tx_rings && vsi->tx_rings[0]) {
6470                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6471                         kfree_rcu(vsi->tx_rings[i], rcu);
6472                         vsi->tx_rings[i] = NULL;
6473                         vsi->rx_rings[i] = NULL;
6474                 }
6475         }
6476 }
6477
6478 /**
6479  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6480  * @vsi: the VSI being configured
6481  **/
6482 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6483 {
6484         struct i40e_ring *tx_ring, *rx_ring;
6485         struct i40e_pf *pf = vsi->back;
6486         int i;
6487
6488         /* Set basic values in the rings to be used later during open() */
6489         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6490                 /* allocate space for both Tx and Rx in one shot */
6491                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6492                 if (!tx_ring)
6493                         goto err_out;
6494
6495                 tx_ring->queue_index = i;
6496                 tx_ring->reg_idx = vsi->base_queue + i;
6497                 tx_ring->ring_active = false;
6498                 tx_ring->vsi = vsi;
6499                 tx_ring->netdev = vsi->netdev;
6500                 tx_ring->dev = &pf->pdev->dev;
6501                 tx_ring->count = vsi->num_desc;
6502                 tx_ring->size = 0;
6503                 tx_ring->dcb_tc = 0;
6504                 vsi->tx_rings[i] = tx_ring;
6505
6506                 rx_ring = &tx_ring[1];
6507                 rx_ring->queue_index = i;
6508                 rx_ring->reg_idx = vsi->base_queue + i;
6509                 rx_ring->ring_active = false;
6510                 rx_ring->vsi = vsi;
6511                 rx_ring->netdev = vsi->netdev;
6512                 rx_ring->dev = &pf->pdev->dev;
6513                 rx_ring->count = vsi->num_desc;
6514                 rx_ring->size = 0;
6515                 rx_ring->dcb_tc = 0;
6516                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6517                         set_ring_16byte_desc_enabled(rx_ring);
6518                 else
6519                         clear_ring_16byte_desc_enabled(rx_ring);
6520                 vsi->rx_rings[i] = rx_ring;
6521         }
6522
6523         return 0;
6524
6525 err_out:
6526         i40e_vsi_clear_rings(vsi);
6527         return -ENOMEM;
6528 }
6529
6530 /**
6531  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6532  * @pf: board private structure
6533  * @vectors: the number of MSI-X vectors to request
6534  *
6535  * Returns the number of vectors reserved, or error
6536  **/
6537 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6538 {
6539         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6540                                         I40E_MIN_MSIX, vectors);
6541         if (vectors < 0) {
6542                 dev_info(&pf->pdev->dev,
6543                          "MSI-X vector reservation failed: %d\n", vectors);
6544                 vectors = 0;
6545         }
6546
6547         return vectors;
6548 }
6549
6550 /**
6551  * i40e_init_msix - Setup the MSIX capability
6552  * @pf: board private structure
6553  *
6554  * Work with the OS to set up the MSIX vectors needed.
6555  *
6556  * Returns 0 on success, negative on failure
6557  **/
6558 static int i40e_init_msix(struct i40e_pf *pf)
6559 {
6560         i40e_status err = 0;
6561         struct i40e_hw *hw = &pf->hw;
6562         int v_budget, i;
6563         int vec;
6564
6565         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6566                 return -ENODEV;
6567
6568         /* The number of vectors we'll request will be comprised of:
6569          *   - Add 1 for "other" cause for Admin Queue events, etc.
6570          *   - The number of LAN queue pairs
6571          *      - Queues being used for RSS.
6572          *              We don't need as many as max_rss_size vectors.
6573          *              use rss_size instead in the calculation since that
6574          *              is governed by number of cpus in the system.
6575          *      - assumes symmetric Tx/Rx pairing
6576          *   - The number of VMDq pairs
6577 #ifdef I40E_FCOE
6578          *   - The number of FCOE qps.
6579 #endif
6580          * Once we count this up, try the request.
6581          *
6582          * If we can't get what we want, we'll simplify to nearly nothing
6583          * and try again.  If that still fails, we punt.
6584          */
6585         pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
6586         pf->num_vmdq_msix = pf->num_vmdq_qps;
6587         v_budget = 1 + pf->num_lan_msix;
6588         v_budget += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6589         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6590                 v_budget++;
6591
6592 #ifdef I40E_FCOE
6593         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6594                 pf->num_fcoe_msix = pf->num_fcoe_qps;
6595                 v_budget += pf->num_fcoe_msix;
6596         }
6597
6598 #endif
6599         /* Scale down if necessary, and the rings will share vectors */
6600         v_budget = min_t(int, v_budget, hw->func_caps.num_msix_vectors);
6601
6602         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6603                                    GFP_KERNEL);
6604         if (!pf->msix_entries)
6605                 return -ENOMEM;
6606
6607         for (i = 0; i < v_budget; i++)
6608                 pf->msix_entries[i].entry = i;
6609         vec = i40e_reserve_msix_vectors(pf, v_budget);
6610
6611         if (vec != v_budget) {
6612                 /* If we have limited resources, we will start with no vectors
6613                  * for the special features and then allocate vectors to some
6614                  * of these features based on the policy and at the end disable
6615                  * the features that did not get any vectors.
6616                  */
6617 #ifdef I40E_FCOE
6618                 pf->num_fcoe_qps = 0;
6619                 pf->num_fcoe_msix = 0;
6620 #endif
6621                 pf->num_vmdq_msix = 0;
6622         }
6623
6624         if (vec < I40E_MIN_MSIX) {
6625                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6626                 kfree(pf->msix_entries);
6627                 pf->msix_entries = NULL;
6628                 return -ENODEV;
6629
6630         } else if (vec == I40E_MIN_MSIX) {
6631                 /* Adjust for minimal MSIX use */
6632                 pf->num_vmdq_vsis = 0;
6633                 pf->num_vmdq_qps = 0;
6634                 pf->num_lan_qps = 1;
6635                 pf->num_lan_msix = 1;
6636
6637         } else if (vec != v_budget) {
6638                 /* reserve the misc vector */
6639                 vec--;
6640
6641                 /* Scale vector usage down */
6642                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
6643                 pf->num_vmdq_vsis = 1;
6644
6645                 /* partition out the remaining vectors */
6646                 switch (vec) {
6647                 case 2:
6648                         pf->num_lan_msix = 1;
6649                         break;
6650                 case 3:
6651 #ifdef I40E_FCOE
6652                         /* give one vector to FCoE */
6653                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6654                                 pf->num_lan_msix = 1;
6655                                 pf->num_fcoe_msix = 1;
6656                         }
6657 #else
6658                         pf->num_lan_msix = 2;
6659 #endif
6660                         break;
6661                 default:
6662 #ifdef I40E_FCOE
6663                         /* give one vector to FCoE */
6664                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6665                                 pf->num_fcoe_msix = 1;
6666                                 vec--;
6667                         }
6668 #endif
6669                         pf->num_lan_msix = min_t(int, (vec / 2),
6670                                                  pf->num_lan_qps);
6671                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
6672                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
6673                         break;
6674                 }
6675         }
6676
6677         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
6678             (pf->num_vmdq_msix == 0)) {
6679                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
6680                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
6681         }
6682 #ifdef I40E_FCOE
6683
6684         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
6685                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
6686                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
6687         }
6688 #endif
6689         return err;
6690 }
6691
6692 /**
6693  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
6694  * @vsi: the VSI being configured
6695  * @v_idx: index of the vector in the vsi struct
6696  *
6697  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
6698  **/
6699 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
6700 {
6701         struct i40e_q_vector *q_vector;
6702
6703         /* allocate q_vector */
6704         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
6705         if (!q_vector)
6706                 return -ENOMEM;
6707
6708         q_vector->vsi = vsi;
6709         q_vector->v_idx = v_idx;
6710         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
6711         if (vsi->netdev)
6712                 netif_napi_add(vsi->netdev, &q_vector->napi,
6713                                i40e_napi_poll, NAPI_POLL_WEIGHT);
6714
6715         q_vector->rx.latency_range = I40E_LOW_LATENCY;
6716         q_vector->tx.latency_range = I40E_LOW_LATENCY;
6717
6718         /* tie q_vector and vsi together */
6719         vsi->q_vectors[v_idx] = q_vector;
6720
6721         return 0;
6722 }
6723
6724 /**
6725  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
6726  * @vsi: the VSI being configured
6727  *
6728  * We allocate one q_vector per queue interrupt.  If allocation fails we
6729  * return -ENOMEM.
6730  **/
6731 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
6732 {
6733         struct i40e_pf *pf = vsi->back;
6734         int v_idx, num_q_vectors;
6735         int err;
6736
6737         /* if not MSIX, give the one vector only to the LAN VSI */
6738         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6739                 num_q_vectors = vsi->num_q_vectors;
6740         else if (vsi == pf->vsi[pf->lan_vsi])
6741                 num_q_vectors = 1;
6742         else
6743                 return -EINVAL;
6744
6745         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
6746                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
6747                 if (err)
6748                         goto err_out;
6749         }
6750
6751         return 0;
6752
6753 err_out:
6754         while (v_idx--)
6755                 i40e_free_q_vector(vsi, v_idx);
6756
6757         return err;
6758 }
6759
6760 /**
6761  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
6762  * @pf: board private structure to initialize
6763  **/
6764 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
6765 {
6766         int err = 0;
6767
6768         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
6769                 err = i40e_init_msix(pf);
6770                 if (err) {
6771                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
6772 #ifdef I40E_FCOE
6773                                        I40E_FLAG_FCOE_ENABLED   |
6774 #endif
6775                                        I40E_FLAG_RSS_ENABLED    |
6776                                        I40E_FLAG_DCB_CAPABLE    |
6777                                        I40E_FLAG_SRIOV_ENABLED  |
6778                                        I40E_FLAG_FD_SB_ENABLED  |
6779                                        I40E_FLAG_FD_ATR_ENABLED |
6780                                        I40E_FLAG_VMDQ_ENABLED);
6781
6782                         /* rework the queue expectations without MSIX */
6783                         i40e_determine_queue_usage(pf);
6784                 }
6785         }
6786
6787         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
6788             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
6789                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
6790                 err = pci_enable_msi(pf->pdev);
6791                 if (err) {
6792                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
6793                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
6794                 }
6795         }
6796
6797         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
6798                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
6799
6800         /* track first vector for misc interrupts */
6801         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
6802 }
6803
6804 /**
6805  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
6806  * @pf: board private structure
6807  *
6808  * This sets up the handler for MSIX 0, which is used to manage the
6809  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
6810  * when in MSI or Legacy interrupt mode.
6811  **/
6812 static int i40e_setup_misc_vector(struct i40e_pf *pf)
6813 {
6814         struct i40e_hw *hw = &pf->hw;
6815         int err = 0;
6816
6817         /* Only request the irq if this is the first time through, and
6818          * not when we're rebuilding after a Reset
6819          */
6820         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6821                 err = request_irq(pf->msix_entries[0].vector,
6822                                   i40e_intr, 0, pf->misc_int_name, pf);
6823                 if (err) {
6824                         dev_info(&pf->pdev->dev,
6825                                  "request_irq for %s failed: %d\n",
6826                                  pf->misc_int_name, err);
6827                         return -EFAULT;
6828                 }
6829         }
6830
6831         i40e_enable_misc_int_causes(hw);
6832
6833         /* associate no queues to the misc vector */
6834         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
6835         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
6836
6837         i40e_flush(hw);
6838
6839         i40e_irq_dynamic_enable_icr0(pf);
6840
6841         return err;
6842 }
6843
6844 /**
6845  * i40e_config_rss - Prepare for RSS if used
6846  * @pf: board private structure
6847  **/
6848 static int i40e_config_rss(struct i40e_pf *pf)
6849 {
6850         /* Set of random keys generated using kernel random number generator */
6851         static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
6852                                 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
6853                                 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
6854                                 0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
6855         struct i40e_hw *hw = &pf->hw;
6856         u32 lut = 0;
6857         int i, j;
6858         u64 hena;
6859         u32 reg_val;
6860
6861         /* Fill out hash function seed */
6862         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
6863                 wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
6864
6865         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
6866         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
6867                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
6868         hena |= I40E_DEFAULT_RSS_HENA;
6869         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
6870         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
6871
6872         /* Check capability and Set table size and register per hw expectation*/
6873         reg_val = rd32(hw, I40E_PFQF_CTL_0);
6874         if (hw->func_caps.rss_table_size == 512) {
6875                 reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
6876                 pf->rss_table_size = 512;
6877         } else {
6878                 pf->rss_table_size = 128;
6879                 reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
6880         }
6881         wr32(hw, I40E_PFQF_CTL_0, reg_val);
6882
6883         /* Populate the LUT with max no. of queues in round robin fashion */
6884         for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
6885
6886                 /* The assumption is that lan qp count will be the highest
6887                  * qp count for any PF VSI that needs RSS.
6888                  * If multiple VSIs need RSS support, all the qp counts
6889                  * for those VSIs should be a power of 2 for RSS to work.
6890                  * If LAN VSI is the only consumer for RSS then this requirement
6891                  * is not necessary.
6892                  */
6893                 if (j == pf->rss_size)
6894                         j = 0;
6895                 /* lut = 4-byte sliding window of 4 lut entries */
6896                 lut = (lut << 8) | (j &
6897                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
6898                 /* On i = 3, we have 4 entries in lut; write to the register */
6899                 if ((i & 3) == 3)
6900                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
6901         }
6902         i40e_flush(hw);
6903
6904         return 0;
6905 }
6906
6907 /**
6908  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
6909  * @pf: board private structure
6910  * @queue_count: the requested queue count for rss.
6911  *
6912  * returns 0 if rss is not enabled, if enabled returns the final rss queue
6913  * count which may be different from the requested queue count.
6914  **/
6915 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
6916 {
6917         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
6918                 return 0;
6919
6920         queue_count = min_t(int, queue_count, pf->rss_size_max);
6921
6922         if (queue_count != pf->rss_size) {
6923                 i40e_prep_for_reset(pf);
6924
6925                 pf->rss_size = queue_count;
6926
6927                 i40e_reset_and_rebuild(pf, true);
6928                 i40e_config_rss(pf);
6929         }
6930         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
6931         return pf->rss_size;
6932 }
6933
6934 /**
6935  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
6936  * @pf: board private structure to initialize
6937  *
6938  * i40e_sw_init initializes the Adapter private data structure.
6939  * Fields are initialized based on PCI device information and
6940  * OS network device settings (MTU size).
6941  **/
6942 static int i40e_sw_init(struct i40e_pf *pf)
6943 {
6944         int err = 0;
6945         int size;
6946
6947         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
6948                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
6949         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
6950         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
6951                 if (I40E_DEBUG_USER & debug)
6952                         pf->hw.debug_mask = debug;
6953                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
6954                                                 I40E_DEFAULT_MSG_ENABLE);
6955         }
6956
6957         /* Set default capability flags */
6958         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
6959                     I40E_FLAG_MSI_ENABLED     |
6960                     I40E_FLAG_MSIX_ENABLED    |
6961                     I40E_FLAG_RX_1BUF_ENABLED;
6962
6963         /* Set default ITR */
6964         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
6965         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
6966
6967         /* Depending on PF configurations, it is possible that the RSS
6968          * maximum might end up larger than the available queues
6969          */
6970         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
6971         pf->rss_size = 1;
6972         pf->rss_size_max = min_t(int, pf->rss_size_max,
6973                                  pf->hw.func_caps.num_tx_qp);
6974         if (pf->hw.func_caps.rss) {
6975                 pf->flags |= I40E_FLAG_RSS_ENABLED;
6976                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
6977         }
6978
6979         /* MFP mode enabled */
6980         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
6981                 pf->flags |= I40E_FLAG_MFP_ENABLED;
6982                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
6983         }
6984
6985         /* FW/NVM is not yet fixed in this regard */
6986         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
6987             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
6988                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
6989                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
6990                 /* Setup a counter for fd_atr per pf */
6991                 pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
6992                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
6993                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
6994                         /* Setup a counter for fd_sb per pf */
6995                         pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
6996                 } else {
6997                         dev_info(&pf->pdev->dev,
6998                                  "Flow Director Sideband mode Disabled in MFP mode\n");
6999                 }
7000                 pf->fdir_pf_filter_count =
7001                                  pf->hw.func_caps.fd_filters_guaranteed;
7002                 pf->hw.fdir_shared_filter_count =
7003                                  pf->hw.func_caps.fd_filters_best_effort;
7004         }
7005
7006         if (pf->hw.func_caps.vmdq) {
7007                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7008                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7009                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
7010         }
7011
7012 #ifdef I40E_FCOE
7013         err = i40e_init_pf_fcoe(pf);
7014         if (err)
7015                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7016
7017 #endif /* I40E_FCOE */
7018 #ifdef CONFIG_PCI_IOV
7019         if (pf->hw.func_caps.num_vfs) {
7020                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7021                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7022                 pf->num_req_vfs = min_t(int,
7023                                         pf->hw.func_caps.num_vfs,
7024                                         I40E_MAX_VF_COUNT);
7025         }
7026 #endif /* CONFIG_PCI_IOV */
7027         pf->eeprom_version = 0xDEAD;
7028         pf->lan_veb = I40E_NO_VEB;
7029         pf->lan_vsi = I40E_NO_VSI;
7030
7031         /* set up queue assignment tracking */
7032         size = sizeof(struct i40e_lump_tracking)
7033                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7034         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7035         if (!pf->qp_pile) {
7036                 err = -ENOMEM;
7037                 goto sw_init_done;
7038         }
7039         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7040         pf->qp_pile->search_hint = 0;
7041
7042         /* set up vector assignment tracking */
7043         size = sizeof(struct i40e_lump_tracking)
7044                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
7045         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7046         if (!pf->irq_pile) {
7047                 kfree(pf->qp_pile);
7048                 err = -ENOMEM;
7049                 goto sw_init_done;
7050         }
7051         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
7052         pf->irq_pile->search_hint = 0;
7053
7054         pf->tx_timeout_recovery_level = 1;
7055
7056         mutex_init(&pf->switch_mutex);
7057
7058 sw_init_done:
7059         return err;
7060 }
7061
7062 /**
7063  * i40e_set_ntuple - set the ntuple feature flag and take action
7064  * @pf: board private structure to initialize
7065  * @features: the feature set that the stack is suggesting
7066  *
7067  * returns a bool to indicate if reset needs to happen
7068  **/
7069 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7070 {
7071         bool need_reset = false;
7072
7073         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7074          * the state changed, we need to reset.
7075          */
7076         if (features & NETIF_F_NTUPLE) {
7077                 /* Enable filters and mark for reset */
7078                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7079                         need_reset = true;
7080                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7081         } else {
7082                 /* turn off filters, mark for reset and clear SW filter list */
7083                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7084                         need_reset = true;
7085                         i40e_fdir_filter_exit(pf);
7086                 }
7087                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7088                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7089                 /* if ATR was auto disabled it can be re-enabled. */
7090                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
7091                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
7092                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
7093         }
7094         return need_reset;
7095 }
7096
7097 /**
7098  * i40e_set_features - set the netdev feature flags
7099  * @netdev: ptr to the netdev being adjusted
7100  * @features: the feature set that the stack is suggesting
7101  **/
7102 static int i40e_set_features(struct net_device *netdev,
7103                              netdev_features_t features)
7104 {
7105         struct i40e_netdev_priv *np = netdev_priv(netdev);
7106         struct i40e_vsi *vsi = np->vsi;
7107         struct i40e_pf *pf = vsi->back;
7108         bool need_reset;
7109
7110         if (features & NETIF_F_HW_VLAN_CTAG_RX)
7111                 i40e_vlan_stripping_enable(vsi);
7112         else
7113                 i40e_vlan_stripping_disable(vsi);
7114
7115         need_reset = i40e_set_ntuple(pf, features);
7116
7117         if (need_reset)
7118                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7119
7120         return 0;
7121 }
7122
7123 #ifdef CONFIG_I40E_VXLAN
7124 /**
7125  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
7126  * @pf: board private structure
7127  * @port: The UDP port to look up
7128  *
7129  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
7130  **/
7131 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
7132 {
7133         u8 i;
7134
7135         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7136                 if (pf->vxlan_ports[i] == port)
7137                         return i;
7138         }
7139
7140         return i;
7141 }
7142
7143 /**
7144  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
7145  * @netdev: This physical port's netdev
7146  * @sa_family: Socket Family that VXLAN is notifying us about
7147  * @port: New UDP port number that VXLAN started listening to
7148  **/
7149 static void i40e_add_vxlan_port(struct net_device *netdev,
7150                                 sa_family_t sa_family, __be16 port)
7151 {
7152         struct i40e_netdev_priv *np = netdev_priv(netdev);
7153         struct i40e_vsi *vsi = np->vsi;
7154         struct i40e_pf *pf = vsi->back;
7155         u8 next_idx;
7156         u8 idx;
7157
7158         if (sa_family == AF_INET6)
7159                 return;
7160
7161         idx = i40e_get_vxlan_port_idx(pf, port);
7162
7163         /* Check if port already exists */
7164         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7165                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
7166                 return;
7167         }
7168
7169         /* Now check if there is space to add the new port */
7170         next_idx = i40e_get_vxlan_port_idx(pf, 0);
7171
7172         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7173                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
7174                             ntohs(port));
7175                 return;
7176         }
7177
7178         /* New port: add it and mark its index in the bitmap */
7179         pf->vxlan_ports[next_idx] = port;
7180         pf->pending_vxlan_bitmap |= (1 << next_idx);
7181
7182         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7183 }
7184
7185 /**
7186  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
7187  * @netdev: This physical port's netdev
7188  * @sa_family: Socket Family that VXLAN is notifying us about
7189  * @port: UDP port number that VXLAN stopped listening to
7190  **/
7191 static void i40e_del_vxlan_port(struct net_device *netdev,
7192                                 sa_family_t sa_family, __be16 port)
7193 {
7194         struct i40e_netdev_priv *np = netdev_priv(netdev);
7195         struct i40e_vsi *vsi = np->vsi;
7196         struct i40e_pf *pf = vsi->back;
7197         u8 idx;
7198
7199         if (sa_family == AF_INET6)
7200                 return;
7201
7202         idx = i40e_get_vxlan_port_idx(pf, port);
7203
7204         /* Check if port already exists */
7205         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7206                 /* if port exists, set it to 0 (mark for deletion)
7207                  * and make it pending
7208                  */
7209                 pf->vxlan_ports[idx] = 0;
7210
7211                 pf->pending_vxlan_bitmap |= (1 << idx);
7212
7213                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7214         } else {
7215                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
7216                             ntohs(port));
7217         }
7218 }
7219
7220 #endif
7221 static int i40e_get_phys_port_id(struct net_device *netdev,
7222                                  struct netdev_phys_port_id *ppid)
7223 {
7224         struct i40e_netdev_priv *np = netdev_priv(netdev);
7225         struct i40e_pf *pf = np->vsi->back;
7226         struct i40e_hw *hw = &pf->hw;
7227
7228         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
7229                 return -EOPNOTSUPP;
7230
7231         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
7232         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
7233
7234         return 0;
7235 }
7236
7237 #ifdef HAVE_FDB_OPS
7238 #ifdef USE_CONST_DEV_UC_CHAR
7239 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
7240                             struct net_device *dev,
7241                             const unsigned char *addr,
7242                             u16 flags)
7243 #else
7244 static int i40e_ndo_fdb_add(struct ndmsg *ndm,
7245                             struct net_device *dev,
7246                             unsigned char *addr,
7247                             u16 flags)
7248 #endif
7249 {
7250         struct i40e_netdev_priv *np = netdev_priv(dev);
7251         struct i40e_pf *pf = np->vsi->back;
7252         int err = 0;
7253
7254         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
7255                 return -EOPNOTSUPP;
7256
7257         /* Hardware does not support aging addresses so if a
7258          * ndm_state is given only allow permanent addresses
7259          */
7260         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
7261                 netdev_info(dev, "FDB only supports static addresses\n");
7262                 return -EINVAL;
7263         }
7264
7265         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
7266                 err = dev_uc_add_excl(dev, addr);
7267         else if (is_multicast_ether_addr(addr))
7268                 err = dev_mc_add_excl(dev, addr);
7269         else
7270                 err = -EINVAL;
7271
7272         /* Only return duplicate errors if NLM_F_EXCL is set */
7273         if (err == -EEXIST && !(flags & NLM_F_EXCL))
7274                 err = 0;
7275
7276         return err;
7277 }
7278
7279 #ifndef USE_DEFAULT_FDB_DEL_DUMP
7280 #ifdef USE_CONST_DEV_UC_CHAR
7281 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
7282                             struct net_device *dev,
7283                             const unsigned char *addr)
7284 #else
7285 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
7286                             struct net_device *dev,
7287                             unsigned char *addr)
7288 #endif
7289 {
7290         struct i40e_netdev_priv *np = netdev_priv(dev);
7291         struct i40e_pf *pf = np->vsi->back;
7292         int err = -EOPNOTSUPP;
7293
7294         if (ndm->ndm_state & NUD_PERMANENT) {
7295                 netdev_info(dev, "FDB only supports static addresses\n");
7296                 return -EINVAL;
7297         }
7298
7299         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
7300                 if (is_unicast_ether_addr(addr))
7301                         err = dev_uc_del(dev, addr);
7302                 else if (is_multicast_ether_addr(addr))
7303                         err = dev_mc_del(dev, addr);
7304                 else
7305                         err = -EINVAL;
7306         }
7307
7308         return err;
7309 }
7310
7311 static int i40e_ndo_fdb_dump(struct sk_buff *skb,
7312                              struct netlink_callback *cb,
7313                              struct net_device *dev,
7314                              struct net_device *filter_dev,
7315                              int idx)
7316 {
7317         struct i40e_netdev_priv *np = netdev_priv(dev);
7318         struct i40e_pf *pf = np->vsi->back;
7319
7320         if (pf->flags & I40E_FLAG_SRIOV_ENABLED)
7321                 idx = ndo_dflt_fdb_dump(skb, cb, dev, filter_dev, idx);
7322
7323         return idx;
7324 }
7325
7326 #endif /* USE_DEFAULT_FDB_DEL_DUMP */
7327 #endif /* HAVE_FDB_OPS */
7328 static const struct net_device_ops i40e_netdev_ops = {
7329         .ndo_open               = i40e_open,
7330         .ndo_stop               = i40e_close,
7331         .ndo_start_xmit         = i40e_lan_xmit_frame,
7332         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
7333         .ndo_set_rx_mode        = i40e_set_rx_mode,
7334         .ndo_validate_addr      = eth_validate_addr,
7335         .ndo_set_mac_address    = i40e_set_mac,
7336         .ndo_change_mtu         = i40e_change_mtu,
7337         .ndo_do_ioctl           = i40e_ioctl,
7338         .ndo_tx_timeout         = i40e_tx_timeout,
7339         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
7340         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
7341 #ifdef CONFIG_NET_POLL_CONTROLLER
7342         .ndo_poll_controller    = i40e_netpoll,
7343 #endif
7344         .ndo_setup_tc           = i40e_setup_tc,
7345 #ifdef I40E_FCOE
7346         .ndo_fcoe_enable        = i40e_fcoe_enable,
7347         .ndo_fcoe_disable       = i40e_fcoe_disable,
7348 #endif
7349         .ndo_set_features       = i40e_set_features,
7350         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
7351         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
7352         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
7353         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
7354         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
7355         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofck,
7356 #ifdef CONFIG_I40E_VXLAN
7357         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
7358         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
7359 #endif
7360         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
7361 #ifdef HAVE_FDB_OPS
7362         .ndo_fdb_add            = i40e_ndo_fdb_add,
7363 #ifndef USE_DEFAULT_FDB_DEL_DUMP
7364         .ndo_fdb_del            = i40e_ndo_fdb_del,
7365         .ndo_fdb_dump           = i40e_ndo_fdb_dump,
7366 #endif
7367 #endif
7368 };
7369
7370 /**
7371  * i40e_config_netdev - Setup the netdev flags
7372  * @vsi: the VSI being configured
7373  *
7374  * Returns 0 on success, negative value on failure
7375  **/
7376 static int i40e_config_netdev(struct i40e_vsi *vsi)
7377 {
7378         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
7379         struct i40e_pf *pf = vsi->back;
7380         struct i40e_hw *hw = &pf->hw;
7381         struct i40e_netdev_priv *np;
7382         struct net_device *netdev;
7383         u8 mac_addr[ETH_ALEN];
7384         int etherdev_size;
7385
7386         etherdev_size = sizeof(struct i40e_netdev_priv);
7387         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
7388         if (!netdev)
7389                 return -ENOMEM;
7390
7391         vsi->netdev = netdev;
7392         np = netdev_priv(netdev);
7393         np->vsi = vsi;
7394
7395         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
7396                                   NETIF_F_GSO_UDP_TUNNEL |
7397                                   NETIF_F_TSO;
7398
7399         netdev->features = NETIF_F_SG                  |
7400                            NETIF_F_IP_CSUM             |
7401                            NETIF_F_SCTP_CSUM           |
7402                            NETIF_F_HIGHDMA             |
7403                            NETIF_F_GSO_UDP_TUNNEL      |
7404                            NETIF_F_HW_VLAN_CTAG_TX     |
7405                            NETIF_F_HW_VLAN_CTAG_RX     |
7406                            NETIF_F_HW_VLAN_CTAG_FILTER |
7407                            NETIF_F_IPV6_CSUM           |
7408                            NETIF_F_TSO                 |
7409                            NETIF_F_TSO_ECN             |
7410                            NETIF_F_TSO6                |
7411                            NETIF_F_RXCSUM              |
7412                            NETIF_F_RXHASH              |
7413                            0;
7414
7415         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
7416                 netdev->features |= NETIF_F_NTUPLE;
7417
7418         /* copy netdev features into list of user selectable features */
7419         netdev->hw_features |= netdev->features;
7420
7421         if (vsi->type == I40E_VSI_MAIN) {
7422                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
7423                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
7424                 /* The following two steps are necessary to prevent reception
7425                  * of tagged packets - by default the NVM loads a MAC-VLAN
7426                  * filter that will accept any tagged packet.  This is to
7427                  * prevent that during normal operations until a specific
7428                  * VLAN tag filter has been set.
7429                  */
7430                 i40e_rm_default_mac_filter(vsi, mac_addr);
7431                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, true);
7432         } else {
7433                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
7434                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
7435                          pf->vsi[pf->lan_vsi]->netdev->name);
7436                 random_ether_addr(mac_addr);
7437                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
7438         }
7439         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
7440
7441         ether_addr_copy(netdev->dev_addr, mac_addr);
7442         ether_addr_copy(netdev->perm_addr, mac_addr);
7443         /* vlan gets same features (except vlan offload)
7444          * after any tweaks for specific VSI types
7445          */
7446         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
7447                                                      NETIF_F_HW_VLAN_CTAG_RX |
7448                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
7449         netdev->priv_flags |= IFF_UNICAST_FLT;
7450         netdev->priv_flags |= IFF_SUPP_NOFCS;
7451         /* Setup netdev TC information */
7452         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
7453
7454         netdev->netdev_ops = &i40e_netdev_ops;
7455         netdev->watchdog_timeo = 5 * HZ;
7456         i40e_set_ethtool_ops(netdev);
7457 #ifdef I40E_FCOE
7458         i40e_fcoe_config_netdev(netdev, vsi);
7459 #endif
7460
7461         return 0;
7462 }
7463
7464 /**
7465  * i40e_vsi_delete - Delete a VSI from the switch
7466  * @vsi: the VSI being removed
7467  *
7468  * Returns 0 on success, negative value on failure
7469  **/
7470 static void i40e_vsi_delete(struct i40e_vsi *vsi)
7471 {
7472         /* remove default VSI is not allowed */
7473         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
7474                 return;
7475
7476         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
7477 }
7478
7479 /**
7480  * i40e_add_vsi - Add a VSI to the switch
7481  * @vsi: the VSI being configured
7482  *
7483  * This initializes a VSI context depending on the VSI type to be added and
7484  * passes it down to the add_vsi aq command.
7485  **/
7486 static int i40e_add_vsi(struct i40e_vsi *vsi)
7487 {
7488         int ret = -ENODEV;
7489         struct i40e_mac_filter *f, *ftmp;
7490         struct i40e_pf *pf = vsi->back;
7491         struct i40e_hw *hw = &pf->hw;
7492         struct i40e_vsi_context ctxt;
7493         u8 enabled_tc = 0x1; /* TC0 enabled */
7494         int f_count = 0;
7495
7496         memset(&ctxt, 0, sizeof(ctxt));
7497         switch (vsi->type) {
7498         case I40E_VSI_MAIN:
7499                 /* The PF's main VSI is already setup as part of the
7500                  * device initialization, so we'll not bother with
7501                  * the add_vsi call, but we will retrieve the current
7502                  * VSI context.
7503                  */
7504                 ctxt.seid = pf->main_vsi_seid;
7505                 ctxt.pf_num = pf->hw.pf_id;
7506                 ctxt.vf_num = 0;
7507                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
7508                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7509                 if (ret) {
7510                         dev_info(&pf->pdev->dev,
7511                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
7512                                  ret, pf->hw.aq.asq_last_status);
7513                         return -ENOENT;
7514                 }
7515                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7516                 vsi->info.valid_sections = 0;
7517
7518                 vsi->seid = ctxt.seid;
7519                 vsi->id = ctxt.vsi_number;
7520
7521                 enabled_tc = i40e_pf_get_tc_map(pf);
7522
7523                 /* MFP mode setup queue map and update VSI */
7524                 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
7525                         memset(&ctxt, 0, sizeof(ctxt));
7526                         ctxt.seid = pf->main_vsi_seid;
7527                         ctxt.pf_num = pf->hw.pf_id;
7528                         ctxt.vf_num = 0;
7529                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
7530                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
7531                         if (ret) {
7532                                 dev_info(&pf->pdev->dev,
7533                                          "update vsi failed, aq_err=%d\n",
7534                                          pf->hw.aq.asq_last_status);
7535                                 ret = -ENOENT;
7536                                 goto err;
7537                         }
7538                         /* update the local VSI info queue map */
7539                         i40e_vsi_update_queue_map(vsi, &ctxt);
7540                         vsi->info.valid_sections = 0;
7541                 } else {
7542                         /* Default/Main VSI is only enabled for TC0
7543                          * reconfigure it to enable all TCs that are
7544                          * available on the port in SFP mode.
7545                          */
7546                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
7547                         if (ret) {
7548                                 dev_info(&pf->pdev->dev,
7549                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
7550                                          enabled_tc, ret,
7551                                          pf->hw.aq.asq_last_status);
7552                                 ret = -ENOENT;
7553                         }
7554                 }
7555                 break;
7556
7557         case I40E_VSI_FDIR:
7558                 ctxt.pf_num = hw->pf_id;
7559                 ctxt.vf_num = 0;
7560                 ctxt.uplink_seid = vsi->uplink_seid;
7561                 ctxt.connection_type = 0x1;     /* regular data port */
7562                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7563                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7564                 break;
7565
7566         case I40E_VSI_VMDQ2:
7567                 ctxt.pf_num = hw->pf_id;
7568                 ctxt.vf_num = 0;
7569                 ctxt.uplink_seid = vsi->uplink_seid;
7570                 ctxt.connection_type = 0x1;     /* regular data port */
7571                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
7572
7573                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7574
7575                 /* This VSI is connected to VEB so the switch_id
7576                  * should be set to zero by default.
7577                  */
7578                 ctxt.info.switch_id = 0;
7579                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7580
7581                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7582                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7583                 break;
7584
7585         case I40E_VSI_SRIOV:
7586                 ctxt.pf_num = hw->pf_id;
7587                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
7588                 ctxt.uplink_seid = vsi->uplink_seid;
7589                 ctxt.connection_type = 0x1;     /* regular data port */
7590                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
7591
7592                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7593
7594                 /* This VSI is connected to VEB so the switch_id
7595                  * should be set to zero by default.
7596                  */
7597                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7598
7599                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
7600                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
7601                 if (pf->vf[vsi->vf_id].spoofchk) {
7602                         ctxt.info.valid_sections |=
7603                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
7604                         ctxt.info.sec_flags |=
7605                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
7606                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
7607                 }
7608                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7609                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7610                 break;
7611
7612 #ifdef I40E_FCOE
7613         case I40E_VSI_FCOE:
7614                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
7615                 if (ret) {
7616                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
7617                         return ret;
7618                 }
7619                 break;
7620
7621 #endif /* I40E_FCOE */
7622         default:
7623                 return -ENODEV;
7624         }
7625
7626         if (vsi->type != I40E_VSI_MAIN) {
7627                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
7628                 if (ret) {
7629                         dev_info(&vsi->back->pdev->dev,
7630                                  "add vsi failed, aq_err=%d\n",
7631                                  vsi->back->hw.aq.asq_last_status);
7632                         ret = -ENOENT;
7633                         goto err;
7634                 }
7635                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7636                 vsi->info.valid_sections = 0;
7637                 vsi->seid = ctxt.seid;
7638                 vsi->id = ctxt.vsi_number;
7639         }
7640
7641         /* If macvlan filters already exist, force them to get loaded */
7642         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
7643                 f->changed = true;
7644                 f_count++;
7645
7646                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
7647                         i40e_aq_mac_address_write(&vsi->back->hw,
7648                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
7649                                                   f->macaddr, NULL);
7650                 }
7651         }
7652         if (f_count) {
7653                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
7654                 pf->flags |= I40E_FLAG_FILTER_SYNC;
7655         }
7656
7657         /* Update VSI BW information */
7658         ret = i40e_vsi_get_bw_info(vsi);
7659         if (ret) {
7660                 dev_info(&pf->pdev->dev,
7661                          "couldn't get vsi bw info, err %d, aq_err %d\n",
7662                          ret, pf->hw.aq.asq_last_status);
7663                 /* VSI is already added so not tearing that up */
7664                 ret = 0;
7665         }
7666
7667 err:
7668         return ret;
7669 }
7670
7671 /**
7672  * i40e_vsi_release - Delete a VSI and free its resources
7673  * @vsi: the VSI being removed
7674  *
7675  * Returns 0 on success or < 0 on error
7676  **/
7677 int i40e_vsi_release(struct i40e_vsi *vsi)
7678 {
7679         struct i40e_mac_filter *f, *ftmp;
7680         struct i40e_veb *veb = NULL;
7681         struct i40e_pf *pf;
7682         u16 uplink_seid;
7683         int i, n;
7684
7685         pf = vsi->back;
7686
7687         /* release of a VEB-owner or last VSI is not allowed */
7688         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
7689                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
7690                          vsi->seid, vsi->uplink_seid);
7691                 return -ENODEV;
7692         }
7693         if (vsi == pf->vsi[pf->lan_vsi] &&
7694             !test_bit(__I40E_DOWN, &pf->state)) {
7695                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
7696                 return -ENODEV;
7697         }
7698
7699         uplink_seid = vsi->uplink_seid;
7700         if (vsi->type != I40E_VSI_SRIOV) {
7701                 if (vsi->netdev_registered) {
7702                         vsi->netdev_registered = false;
7703                         if (vsi->netdev) {
7704                                 /* results in a call to i40e_close() */
7705                                 unregister_netdev(vsi->netdev);
7706                         }
7707                 } else {
7708                         i40e_vsi_close(vsi);
7709                 }
7710                 i40e_vsi_disable_irq(vsi);
7711         }
7712
7713         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
7714                 i40e_del_filter(vsi, f->macaddr, f->vlan,
7715                                 f->is_vf, f->is_netdev);
7716         i40e_sync_vsi_filters(vsi);
7717
7718         i40e_vsi_delete(vsi);
7719         i40e_vsi_free_q_vectors(vsi);
7720         if (vsi->netdev) {
7721                 free_netdev(vsi->netdev);
7722                 vsi->netdev = NULL;
7723         }
7724         i40e_vsi_clear_rings(vsi);
7725         i40e_vsi_clear(vsi);
7726
7727         /* If this was the last thing on the VEB, except for the
7728          * controlling VSI, remove the VEB, which puts the controlling
7729          * VSI onto the next level down in the switch.
7730          *
7731          * Well, okay, there's one more exception here: don't remove
7732          * the orphan VEBs yet.  We'll wait for an explicit remove request
7733          * from up the network stack.
7734          */
7735         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
7736                 if (pf->vsi[i] &&
7737                     pf->vsi[i]->uplink_seid == uplink_seid &&
7738                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7739                         n++;      /* count the VSIs */
7740                 }
7741         }
7742         for (i = 0; i < I40E_MAX_VEB; i++) {
7743                 if (!pf->veb[i])
7744                         continue;
7745                 if (pf->veb[i]->uplink_seid == uplink_seid)
7746                         n++;     /* count the VEBs */
7747                 if (pf->veb[i]->seid == uplink_seid)
7748                         veb = pf->veb[i];
7749         }
7750         if (n == 0 && veb && veb->uplink_seid != 0)
7751                 i40e_veb_release(veb);
7752
7753         return 0;
7754 }
7755
7756 /**
7757  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
7758  * @vsi: ptr to the VSI
7759  *
7760  * This should only be called after i40e_vsi_mem_alloc() which allocates the
7761  * corresponding SW VSI structure and initializes num_queue_pairs for the
7762  * newly allocated VSI.
7763  *
7764  * Returns 0 on success or negative on failure
7765  **/
7766 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
7767 {
7768         int ret = -ENOENT;
7769         struct i40e_pf *pf = vsi->back;
7770
7771         if (vsi->q_vectors[0]) {
7772                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
7773                          vsi->seid);
7774                 return -EEXIST;
7775         }
7776
7777         if (vsi->base_vector) {
7778                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
7779                          vsi->seid, vsi->base_vector);
7780                 return -EEXIST;
7781         }
7782
7783         ret = i40e_vsi_alloc_q_vectors(vsi);
7784         if (ret) {
7785                 dev_info(&pf->pdev->dev,
7786                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
7787                          vsi->num_q_vectors, vsi->seid, ret);
7788                 vsi->num_q_vectors = 0;
7789                 goto vector_setup_out;
7790         }
7791
7792         if (vsi->num_q_vectors)
7793                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
7794                                                  vsi->num_q_vectors, vsi->idx);
7795         if (vsi->base_vector < 0) {
7796                 dev_info(&pf->pdev->dev,
7797                          "failed to get queue tracking for VSI %d, err=%d\n",
7798                          vsi->seid, vsi->base_vector);
7799                 i40e_vsi_free_q_vectors(vsi);
7800                 ret = -ENOENT;
7801                 goto vector_setup_out;
7802         }
7803
7804 vector_setup_out:
7805         return ret;
7806 }
7807
7808 /**
7809  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
7810  * @vsi: pointer to the vsi.
7811  *
7812  * This re-allocates a vsi's queue resources.
7813  *
7814  * Returns pointer to the successfully allocated and configured VSI sw struct
7815  * on success, otherwise returns NULL on failure.
7816  **/
7817 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
7818 {
7819         struct i40e_pf *pf = vsi->back;
7820         u8 enabled_tc;
7821         int ret;
7822
7823         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7824         i40e_vsi_clear_rings(vsi);
7825
7826         i40e_vsi_free_arrays(vsi, false);
7827         i40e_set_num_rings_in_vsi(vsi);
7828         ret = i40e_vsi_alloc_arrays(vsi, false);
7829         if (ret)
7830                 goto err_vsi;
7831
7832         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
7833         if (ret < 0) {
7834                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7835                          vsi->seid, ret);
7836                 goto err_vsi;
7837         }
7838         vsi->base_queue = ret;
7839
7840         /* Update the FW view of the VSI. Force a reset of TC and queue
7841          * layout configurations.
7842          */
7843         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
7844         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
7845         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
7846         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
7847
7848         /* assign it some queues */
7849         ret = i40e_alloc_rings(vsi);
7850         if (ret)
7851                 goto err_rings;
7852
7853         /* map all of the rings to the q_vectors */
7854         i40e_vsi_map_rings_to_vectors(vsi);
7855         return vsi;
7856
7857 err_rings:
7858         i40e_vsi_free_q_vectors(vsi);
7859         if (vsi->netdev_registered) {
7860                 vsi->netdev_registered = false;
7861                 unregister_netdev(vsi->netdev);
7862                 free_netdev(vsi->netdev);
7863                 vsi->netdev = NULL;
7864         }
7865         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
7866 err_vsi:
7867         i40e_vsi_clear(vsi);
7868         return NULL;
7869 }
7870
7871 /**
7872  * i40e_vsi_setup - Set up a VSI by a given type
7873  * @pf: board private structure
7874  * @type: VSI type
7875  * @uplink_seid: the switch element to link to
7876  * @param1: usage depends upon VSI type. For VF types, indicates VF id
7877  *
7878  * This allocates the sw VSI structure and its queue resources, then add a VSI
7879  * to the identified VEB.
7880  *
7881  * Returns pointer to the successfully allocated and configure VSI sw struct on
7882  * success, otherwise returns NULL on failure.
7883  **/
7884 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
7885                                 u16 uplink_seid, u32 param1)
7886 {
7887         struct i40e_vsi *vsi = NULL;
7888         struct i40e_veb *veb = NULL;
7889         int ret, i;
7890         int v_idx;
7891
7892         /* The requested uplink_seid must be either
7893          *     - the PF's port seid
7894          *              no VEB is needed because this is the PF
7895          *              or this is a Flow Director special case VSI
7896          *     - seid of an existing VEB
7897          *     - seid of a VSI that owns an existing VEB
7898          *     - seid of a VSI that doesn't own a VEB
7899          *              a new VEB is created and the VSI becomes the owner
7900          *     - seid of the PF VSI, which is what creates the first VEB
7901          *              this is a special case of the previous
7902          *
7903          * Find which uplink_seid we were given and create a new VEB if needed
7904          */
7905         for (i = 0; i < I40E_MAX_VEB; i++) {
7906                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
7907                         veb = pf->veb[i];
7908                         break;
7909                 }
7910         }
7911
7912         if (!veb && uplink_seid != pf->mac_seid) {
7913
7914                 for (i = 0; i < pf->num_alloc_vsi; i++) {
7915                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
7916                                 vsi = pf->vsi[i];
7917                                 break;
7918                         }
7919                 }
7920                 if (!vsi) {
7921                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
7922                                  uplink_seid);
7923                         return NULL;
7924                 }
7925
7926                 if (vsi->uplink_seid == pf->mac_seid)
7927                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
7928                                              vsi->tc_config.enabled_tc);
7929                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
7930                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
7931                                              vsi->tc_config.enabled_tc);
7932
7933                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7934                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7935                                 veb = pf->veb[i];
7936                 }
7937                 if (!veb) {
7938                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
7939                         return NULL;
7940                 }
7941
7942                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
7943                 uplink_seid = veb->seid;
7944         }
7945
7946         /* get vsi sw struct */
7947         v_idx = i40e_vsi_mem_alloc(pf, type);
7948         if (v_idx < 0)
7949                 goto err_alloc;
7950         vsi = pf->vsi[v_idx];
7951         if (!vsi)
7952                 goto err_alloc;
7953         vsi->type = type;
7954         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
7955
7956         if (type == I40E_VSI_MAIN)
7957                 pf->lan_vsi = v_idx;
7958         else if (type == I40E_VSI_SRIOV)
7959                 vsi->vf_id = param1;
7960         /* assign it some queues */
7961         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
7962                                 vsi->idx);
7963         if (ret < 0) {
7964                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7965                          vsi->seid, ret);
7966                 goto err_vsi;
7967         }
7968         vsi->base_queue = ret;
7969
7970         /* get a VSI from the hardware */
7971         vsi->uplink_seid = uplink_seid;
7972         ret = i40e_add_vsi(vsi);
7973         if (ret)
7974                 goto err_vsi;
7975
7976         switch (vsi->type) {
7977         /* setup the netdev if needed */
7978         case I40E_VSI_MAIN:
7979         case I40E_VSI_VMDQ2:
7980         case I40E_VSI_FCOE:
7981                 ret = i40e_config_netdev(vsi);
7982                 if (ret)
7983                         goto err_netdev;
7984                 ret = register_netdev(vsi->netdev);
7985                 if (ret)
7986                         goto err_netdev;
7987                 vsi->netdev_registered = true;
7988                 netif_carrier_off(vsi->netdev);
7989 #ifdef CONFIG_I40E_DCB
7990                 /* Setup DCB netlink interface */
7991                 i40e_dcbnl_setup(vsi);
7992 #endif /* CONFIG_I40E_DCB */
7993                 /* fall through */
7994
7995         case I40E_VSI_FDIR:
7996                 /* set up vectors and rings if needed */
7997                 ret = i40e_vsi_setup_vectors(vsi);
7998                 if (ret)
7999                         goto err_msix;
8000
8001                 ret = i40e_alloc_rings(vsi);
8002                 if (ret)
8003                         goto err_rings;
8004
8005                 /* map all of the rings to the q_vectors */
8006                 i40e_vsi_map_rings_to_vectors(vsi);
8007
8008                 i40e_vsi_reset_stats(vsi);
8009                 break;
8010
8011         default:
8012                 /* no netdev or rings for the other VSI types */
8013                 break;
8014         }
8015
8016         return vsi;
8017
8018 err_rings:
8019         i40e_vsi_free_q_vectors(vsi);
8020 err_msix:
8021         if (vsi->netdev_registered) {
8022                 vsi->netdev_registered = false;
8023                 unregister_netdev(vsi->netdev);
8024                 free_netdev(vsi->netdev);
8025                 vsi->netdev = NULL;
8026         }
8027 err_netdev:
8028         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8029 err_vsi:
8030         i40e_vsi_clear(vsi);
8031 err_alloc:
8032         return NULL;
8033 }
8034
8035 /**
8036  * i40e_veb_get_bw_info - Query VEB BW information
8037  * @veb: the veb to query
8038  *
8039  * Query the Tx scheduler BW configuration data for given VEB
8040  **/
8041 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
8042 {
8043         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
8044         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
8045         struct i40e_pf *pf = veb->pf;
8046         struct i40e_hw *hw = &pf->hw;
8047         u32 tc_bw_max;
8048         int ret = 0;
8049         int i;
8050
8051         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
8052                                                   &bw_data, NULL);
8053         if (ret) {
8054                 dev_info(&pf->pdev->dev,
8055                          "query veb bw config failed, aq_err=%d\n",
8056                          hw->aq.asq_last_status);
8057                 goto out;
8058         }
8059
8060         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
8061                                                    &ets_data, NULL);
8062         if (ret) {
8063                 dev_info(&pf->pdev->dev,
8064                          "query veb bw ets config failed, aq_err=%d\n",
8065                          hw->aq.asq_last_status);
8066                 goto out;
8067         }
8068
8069         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
8070         veb->bw_max_quanta = ets_data.tc_bw_max;
8071         veb->is_abs_credits = bw_data.absolute_credits_enable;
8072         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
8073                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
8074         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
8075                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
8076                 veb->bw_tc_limit_credits[i] =
8077                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
8078                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
8079         }
8080
8081 out:
8082         return ret;
8083 }
8084
8085 /**
8086  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
8087  * @pf: board private structure
8088  *
8089  * On error: returns error code (negative)
8090  * On success: returns vsi index in PF (positive)
8091  **/
8092 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
8093 {
8094         int ret = -ENOENT;
8095         struct i40e_veb *veb;
8096         int i;
8097
8098         /* Need to protect the allocation of switch elements at the PF level */
8099         mutex_lock(&pf->switch_mutex);
8100
8101         /* VEB list may be fragmented if VEB creation/destruction has
8102          * been happening.  We can afford to do a quick scan to look
8103          * for any free slots in the list.
8104          *
8105          * find next empty veb slot, looping back around if necessary
8106          */
8107         i = 0;
8108         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
8109                 i++;
8110         if (i >= I40E_MAX_VEB) {
8111                 ret = -ENOMEM;
8112                 goto err_alloc_veb;  /* out of VEB slots! */
8113         }
8114
8115         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
8116         if (!veb) {
8117                 ret = -ENOMEM;
8118                 goto err_alloc_veb;
8119         }
8120         veb->pf = pf;
8121         veb->idx = i;
8122         veb->enabled_tc = 1;
8123
8124         pf->veb[i] = veb;
8125         ret = i;
8126 err_alloc_veb:
8127         mutex_unlock(&pf->switch_mutex);
8128         return ret;
8129 }
8130
8131 /**
8132  * i40e_switch_branch_release - Delete a branch of the switch tree
8133  * @branch: where to start deleting
8134  *
8135  * This uses recursion to find the tips of the branch to be
8136  * removed, deleting until we get back to and can delete this VEB.
8137  **/
8138 static void i40e_switch_branch_release(struct i40e_veb *branch)
8139 {
8140         struct i40e_pf *pf = branch->pf;
8141         u16 branch_seid = branch->seid;
8142         u16 veb_idx = branch->idx;
8143         int i;
8144
8145         /* release any VEBs on this VEB - RECURSION */
8146         for (i = 0; i < I40E_MAX_VEB; i++) {
8147                 if (!pf->veb[i])
8148                         continue;
8149                 if (pf->veb[i]->uplink_seid == branch->seid)
8150                         i40e_switch_branch_release(pf->veb[i]);
8151         }
8152
8153         /* Release the VSIs on this VEB, but not the owner VSI.
8154          *
8155          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
8156          *       the VEB itself, so don't use (*branch) after this loop.
8157          */
8158         for (i = 0; i < pf->num_alloc_vsi; i++) {
8159                 if (!pf->vsi[i])
8160                         continue;
8161                 if (pf->vsi[i]->uplink_seid == branch_seid &&
8162                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8163                         i40e_vsi_release(pf->vsi[i]);
8164                 }
8165         }
8166
8167         /* There's one corner case where the VEB might not have been
8168          * removed, so double check it here and remove it if needed.
8169          * This case happens if the veb was created from the debugfs
8170          * commands and no VSIs were added to it.
8171          */
8172         if (pf->veb[veb_idx])
8173                 i40e_veb_release(pf->veb[veb_idx]);
8174 }
8175
8176 /**
8177  * i40e_veb_clear - remove veb struct
8178  * @veb: the veb to remove
8179  **/
8180 static void i40e_veb_clear(struct i40e_veb *veb)
8181 {
8182         if (!veb)
8183                 return;
8184
8185         if (veb->pf) {
8186                 struct i40e_pf *pf = veb->pf;
8187
8188                 mutex_lock(&pf->switch_mutex);
8189                 if (pf->veb[veb->idx] == veb)
8190                         pf->veb[veb->idx] = NULL;
8191                 mutex_unlock(&pf->switch_mutex);
8192         }
8193
8194         kfree(veb);
8195 }
8196
8197 /**
8198  * i40e_veb_release - Delete a VEB and free its resources
8199  * @veb: the VEB being removed
8200  **/
8201 void i40e_veb_release(struct i40e_veb *veb)
8202 {
8203         struct i40e_vsi *vsi = NULL;
8204         struct i40e_pf *pf;
8205         int i, n = 0;
8206
8207         pf = veb->pf;
8208
8209         /* find the remaining VSI and check for extras */
8210         for (i = 0; i < pf->num_alloc_vsi; i++) {
8211                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
8212                         n++;
8213                         vsi = pf->vsi[i];
8214                 }
8215         }
8216         if (n != 1) {
8217                 dev_info(&pf->pdev->dev,
8218                          "can't remove VEB %d with %d VSIs left\n",
8219                          veb->seid, n);
8220                 return;
8221         }
8222
8223         /* move the remaining VSI to uplink veb */
8224         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
8225         if (veb->uplink_seid) {
8226                 vsi->uplink_seid = veb->uplink_seid;
8227                 if (veb->uplink_seid == pf->mac_seid)
8228                         vsi->veb_idx = I40E_NO_VEB;
8229                 else
8230                         vsi->veb_idx = veb->veb_idx;
8231         } else {
8232                 /* floating VEB */
8233                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
8234                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
8235         }
8236
8237         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
8238         i40e_veb_clear(veb);
8239 }
8240
8241 /**
8242  * i40e_add_veb - create the VEB in the switch
8243  * @veb: the VEB to be instantiated
8244  * @vsi: the controlling VSI
8245  **/
8246 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
8247 {
8248         bool is_default = false;
8249         bool is_cloud = false;
8250         int ret;
8251
8252         /* get a VEB from the hardware */
8253         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
8254                               veb->enabled_tc, is_default,
8255                               is_cloud, &veb->seid, NULL);
8256         if (ret) {
8257                 dev_info(&veb->pf->pdev->dev,
8258                          "couldn't add VEB, err %d, aq_err %d\n",
8259                          ret, veb->pf->hw.aq.asq_last_status);
8260                 return -EPERM;
8261         }
8262
8263         /* get statistics counter */
8264         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
8265                                          &veb->stats_idx, NULL, NULL, NULL);
8266         if (ret) {
8267                 dev_info(&veb->pf->pdev->dev,
8268                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
8269                          ret, veb->pf->hw.aq.asq_last_status);
8270                 return -EPERM;
8271         }
8272         ret = i40e_veb_get_bw_info(veb);
8273         if (ret) {
8274                 dev_info(&veb->pf->pdev->dev,
8275                          "couldn't get VEB bw info, err %d, aq_err %d\n",
8276                          ret, veb->pf->hw.aq.asq_last_status);
8277                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
8278                 return -ENOENT;
8279         }
8280
8281         vsi->uplink_seid = veb->seid;
8282         vsi->veb_idx = veb->idx;
8283         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8284
8285         return 0;
8286 }
8287
8288 /**
8289  * i40e_veb_setup - Set up a VEB
8290  * @pf: board private structure
8291  * @flags: VEB setup flags
8292  * @uplink_seid: the switch element to link to
8293  * @vsi_seid: the initial VSI seid
8294  * @enabled_tc: Enabled TC bit-map
8295  *
8296  * This allocates the sw VEB structure and links it into the switch
8297  * It is possible and legal for this to be a duplicate of an already
8298  * existing VEB.  It is also possible for both uplink and vsi seids
8299  * to be zero, in order to create a floating VEB.
8300  *
8301  * Returns pointer to the successfully allocated VEB sw struct on
8302  * success, otherwise returns NULL on failure.
8303  **/
8304 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
8305                                 u16 uplink_seid, u16 vsi_seid,
8306                                 u8 enabled_tc)
8307 {
8308         struct i40e_veb *veb, *uplink_veb = NULL;
8309         int vsi_idx, veb_idx;
8310         int ret;
8311
8312         /* if one seid is 0, the other must be 0 to create a floating relay */
8313         if ((uplink_seid == 0 || vsi_seid == 0) &&
8314             (uplink_seid + vsi_seid != 0)) {
8315                 dev_info(&pf->pdev->dev,
8316                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
8317                          uplink_seid, vsi_seid);
8318                 return NULL;
8319         }
8320
8321         /* make sure there is such a vsi and uplink */
8322         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
8323                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
8324                         break;
8325         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
8326                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
8327                          vsi_seid);
8328                 return NULL;
8329         }
8330
8331         if (uplink_seid && uplink_seid != pf->mac_seid) {
8332                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
8333                         if (pf->veb[veb_idx] &&
8334                             pf->veb[veb_idx]->seid == uplink_seid) {
8335                                 uplink_veb = pf->veb[veb_idx];
8336                                 break;
8337                         }
8338                 }
8339                 if (!uplink_veb) {
8340                         dev_info(&pf->pdev->dev,
8341                                  "uplink seid %d not found\n", uplink_seid);
8342                         return NULL;
8343                 }
8344         }
8345
8346         /* get veb sw struct */
8347         veb_idx = i40e_veb_mem_alloc(pf);
8348         if (veb_idx < 0)
8349                 goto err_alloc;
8350         veb = pf->veb[veb_idx];
8351         veb->flags = flags;
8352         veb->uplink_seid = uplink_seid;
8353         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
8354         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
8355
8356         /* create the VEB in the switch */
8357         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
8358         if (ret)
8359                 goto err_veb;
8360         if (vsi_idx == pf->lan_vsi)
8361                 pf->lan_veb = veb->idx;
8362
8363         return veb;
8364
8365 err_veb:
8366         i40e_veb_clear(veb);
8367 err_alloc:
8368         return NULL;
8369 }
8370
8371 /**
8372  * i40e_setup_pf_switch_element - set pf vars based on switch type
8373  * @pf: board private structure
8374  * @ele: element we are building info from
8375  * @num_reported: total number of elements
8376  * @printconfig: should we print the contents
8377  *
8378  * helper function to assist in extracting a few useful SEID values.
8379  **/
8380 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
8381                                 struct i40e_aqc_switch_config_element_resp *ele,
8382                                 u16 num_reported, bool printconfig)
8383 {
8384         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
8385         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
8386         u8 element_type = ele->element_type;
8387         u16 seid = le16_to_cpu(ele->seid);
8388
8389         if (printconfig)
8390                 dev_info(&pf->pdev->dev,
8391                          "type=%d seid=%d uplink=%d downlink=%d\n",
8392                          element_type, seid, uplink_seid, downlink_seid);
8393
8394         switch (element_type) {
8395         case I40E_SWITCH_ELEMENT_TYPE_MAC:
8396                 pf->mac_seid = seid;
8397                 break;
8398         case I40E_SWITCH_ELEMENT_TYPE_VEB:
8399                 /* Main VEB? */
8400                 if (uplink_seid != pf->mac_seid)
8401                         break;
8402                 if (pf->lan_veb == I40E_NO_VEB) {
8403                         int v;
8404
8405                         /* find existing or else empty VEB */
8406                         for (v = 0; v < I40E_MAX_VEB; v++) {
8407                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
8408                                         pf->lan_veb = v;
8409                                         break;
8410                                 }
8411                         }
8412                         if (pf->lan_veb == I40E_NO_VEB) {
8413                                 v = i40e_veb_mem_alloc(pf);
8414                                 if (v < 0)
8415                                         break;
8416                                 pf->lan_veb = v;
8417                         }
8418                 }
8419
8420                 pf->veb[pf->lan_veb]->seid = seid;
8421                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
8422                 pf->veb[pf->lan_veb]->pf = pf;
8423                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
8424                 break;
8425         case I40E_SWITCH_ELEMENT_TYPE_VSI:
8426                 if (num_reported != 1)
8427                         break;
8428                 /* This is immediately after a reset so we can assume this is
8429                  * the PF's VSI
8430                  */
8431                 pf->mac_seid = uplink_seid;
8432                 pf->pf_seid = downlink_seid;
8433                 pf->main_vsi_seid = seid;
8434                 if (printconfig)
8435                         dev_info(&pf->pdev->dev,
8436                                  "pf_seid=%d main_vsi_seid=%d\n",
8437                                  pf->pf_seid, pf->main_vsi_seid);
8438                 break;
8439         case I40E_SWITCH_ELEMENT_TYPE_PF:
8440         case I40E_SWITCH_ELEMENT_TYPE_VF:
8441         case I40E_SWITCH_ELEMENT_TYPE_EMP:
8442         case I40E_SWITCH_ELEMENT_TYPE_BMC:
8443         case I40E_SWITCH_ELEMENT_TYPE_PE:
8444         case I40E_SWITCH_ELEMENT_TYPE_PA:
8445                 /* ignore these for now */
8446                 break;
8447         default:
8448                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
8449                          element_type, seid);
8450                 break;
8451         }
8452 }
8453
8454 /**
8455  * i40e_fetch_switch_configuration - Get switch config from firmware
8456  * @pf: board private structure
8457  * @printconfig: should we print the contents
8458  *
8459  * Get the current switch configuration from the device and
8460  * extract a few useful SEID values.
8461  **/
8462 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
8463 {
8464         struct i40e_aqc_get_switch_config_resp *sw_config;
8465         u16 next_seid = 0;
8466         int ret = 0;
8467         u8 *aq_buf;
8468         int i;
8469
8470         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
8471         if (!aq_buf)
8472                 return -ENOMEM;
8473
8474         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
8475         do {
8476                 u16 num_reported, num_total;
8477
8478                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
8479                                                 I40E_AQ_LARGE_BUF,
8480                                                 &next_seid, NULL);
8481                 if (ret) {
8482                         dev_info(&pf->pdev->dev,
8483                                  "get switch config failed %d aq_err=%x\n",
8484                                  ret, pf->hw.aq.asq_last_status);
8485                         kfree(aq_buf);
8486                         return -ENOENT;
8487                 }
8488
8489                 num_reported = le16_to_cpu(sw_config->header.num_reported);
8490                 num_total = le16_to_cpu(sw_config->header.num_total);
8491
8492                 if (printconfig)
8493                         dev_info(&pf->pdev->dev,
8494                                  "header: %d reported %d total\n",
8495                                  num_reported, num_total);
8496
8497                 for (i = 0; i < num_reported; i++) {
8498                         struct i40e_aqc_switch_config_element_resp *ele =
8499                                 &sw_config->element[i];
8500
8501                         i40e_setup_pf_switch_element(pf, ele, num_reported,
8502                                                      printconfig);
8503                 }
8504         } while (next_seid != 0);
8505
8506         kfree(aq_buf);
8507         return ret;
8508 }
8509
8510 /**
8511  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
8512  * @pf: board private structure
8513  * @reinit: if the Main VSI needs to re-initialized.
8514  *
8515  * Returns 0 on success, negative value on failure
8516  **/
8517 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
8518 {
8519         int ret;
8520
8521         /* find out what's out there already */
8522         ret = i40e_fetch_switch_configuration(pf, false);
8523         if (ret) {
8524                 dev_info(&pf->pdev->dev,
8525                          "couldn't fetch switch config, err %d, aq_err %d\n",
8526                          ret, pf->hw.aq.asq_last_status);
8527                 return ret;
8528         }
8529         i40e_pf_reset_stats(pf);
8530
8531         /* first time setup */
8532         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
8533                 struct i40e_vsi *vsi = NULL;
8534                 u16 uplink_seid;
8535
8536                 /* Set up the PF VSI associated with the PF's main VSI
8537                  * that is already in the HW switch
8538                  */
8539                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
8540                         uplink_seid = pf->veb[pf->lan_veb]->seid;
8541                 else
8542                         uplink_seid = pf->mac_seid;
8543                 if (pf->lan_vsi == I40E_NO_VSI)
8544                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
8545                 else if (reinit)
8546                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
8547                 if (!vsi) {
8548                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
8549                         i40e_fdir_teardown(pf);
8550                         return -EAGAIN;
8551                 }
8552         } else {
8553                 /* force a reset of TC and queue layout configurations */
8554                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8555                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8556                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8557                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8558         }
8559         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
8560
8561         i40e_fdir_sb_setup(pf);
8562
8563         /* Setup static PF queue filter control settings */
8564         ret = i40e_setup_pf_filter_control(pf);
8565         if (ret) {
8566                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
8567                          ret);
8568                 /* Failure here should not stop continuing other steps */
8569         }
8570
8571         /* enable RSS in the HW, even for only one queue, as the stack can use
8572          * the hash
8573          */
8574         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
8575                 i40e_config_rss(pf);
8576
8577         /* fill in link information and enable LSE reporting */
8578         i40e_update_link_info(&pf->hw, true);
8579         i40e_link_event(pf);
8580
8581         /* Initialize user-specific link properties */
8582         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8583                                   I40E_AQ_AN_COMPLETED) ? true : false);
8584
8585         i40e_ptp_init(pf);
8586
8587         return ret;
8588 }
8589
8590 /**
8591  * i40e_determine_queue_usage - Work out queue distribution
8592  * @pf: board private structure
8593  **/
8594 static void i40e_determine_queue_usage(struct i40e_pf *pf)
8595 {
8596         int queues_left;
8597
8598         pf->num_lan_qps = 0;
8599 #ifdef I40E_FCOE
8600         pf->num_fcoe_qps = 0;
8601 #endif
8602
8603         /* Find the max queues to be put into basic use.  We'll always be
8604          * using TC0, whether or not DCB is running, and TC0 will get the
8605          * big RSS set.
8606          */
8607         queues_left = pf->hw.func_caps.num_tx_qp;
8608
8609         if ((queues_left == 1) ||
8610             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
8611                 /* one qp for PF, no queues for anything else */
8612                 queues_left = 0;
8613                 pf->rss_size = pf->num_lan_qps = 1;
8614
8615                 /* make sure all the fancies are disabled */
8616                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8617 #ifdef I40E_FCOE
8618                                I40E_FLAG_FCOE_ENABLED   |
8619 #endif
8620                                I40E_FLAG_FD_SB_ENABLED  |
8621                                I40E_FLAG_FD_ATR_ENABLED |
8622                                I40E_FLAG_DCB_CAPABLE    |
8623                                I40E_FLAG_SRIOV_ENABLED  |
8624                                I40E_FLAG_VMDQ_ENABLED);
8625         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
8626                                   I40E_FLAG_FD_SB_ENABLED |
8627                                   I40E_FLAG_FD_ATR_ENABLED |
8628                                   I40E_FLAG_DCB_CAPABLE))) {
8629                 /* one qp for PF */
8630                 pf->rss_size = pf->num_lan_qps = 1;
8631                 queues_left -= pf->num_lan_qps;
8632
8633                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8634 #ifdef I40E_FCOE
8635                                I40E_FLAG_FCOE_ENABLED   |
8636 #endif
8637                                I40E_FLAG_FD_SB_ENABLED  |
8638                                I40E_FLAG_FD_ATR_ENABLED |
8639                                I40E_FLAG_DCB_ENABLED    |
8640                                I40E_FLAG_VMDQ_ENABLED);
8641         } else {
8642                 /* Not enough queues for all TCs */
8643                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
8644                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
8645                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
8646                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
8647                 }
8648                 pf->num_lan_qps = pf->rss_size_max;
8649                 queues_left -= pf->num_lan_qps;
8650         }
8651
8652 #ifdef I40E_FCOE
8653         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
8654                 if (I40E_DEFAULT_FCOE <= queues_left) {
8655                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
8656                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
8657                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
8658                 } else {
8659                         pf->num_fcoe_qps = 0;
8660                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
8661                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
8662                 }
8663
8664                 queues_left -= pf->num_fcoe_qps;
8665         }
8666
8667 #endif
8668         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8669                 if (queues_left > 1) {
8670                         queues_left -= 1; /* save 1 queue for FD */
8671                 } else {
8672                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8673                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
8674                 }
8675         }
8676
8677         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8678             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
8679                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
8680                                         (queues_left / pf->num_vf_qps));
8681                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
8682         }
8683
8684         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
8685             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
8686                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
8687                                           (queues_left / pf->num_vmdq_qps));
8688                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
8689         }
8690
8691         pf->queues_left = queues_left;
8692 #ifdef I40E_FCOE
8693         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
8694 #endif
8695 }
8696
8697 /**
8698  * i40e_setup_pf_filter_control - Setup PF static filter control
8699  * @pf: PF to be setup
8700  *
8701  * i40e_setup_pf_filter_control sets up a pf's initial filter control
8702  * settings. If PE/FCoE are enabled then it will also set the per PF
8703  * based filter sizes required for them. It also enables Flow director,
8704  * ethertype and macvlan type filter settings for the pf.
8705  *
8706  * Returns 0 on success, negative on failure
8707  **/
8708 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
8709 {
8710         struct i40e_filter_control_settings *settings = &pf->filter_settings;
8711
8712         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
8713
8714         /* Flow Director is enabled */
8715         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
8716                 settings->enable_fdir = true;
8717
8718         /* Ethtype and MACVLAN filters enabled for PF */
8719         settings->enable_ethtype = true;
8720         settings->enable_macvlan = true;
8721
8722         if (i40e_set_filter_control(&pf->hw, settings))
8723                 return -ENOENT;
8724
8725         return 0;
8726 }
8727
8728 #define INFO_STRING_LEN 255
8729 static void i40e_print_features(struct i40e_pf *pf)
8730 {
8731         struct i40e_hw *hw = &pf->hw;
8732         char *buf, *string;
8733
8734         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
8735         if (!string) {
8736                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
8737                 return;
8738         }
8739
8740         buf = string;
8741
8742         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
8743 #ifdef CONFIG_PCI_IOV
8744         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
8745 #endif
8746         buf += sprintf(buf, "VSIs: %d QP: %d ", pf->hw.func_caps.num_vsis,
8747                        pf->vsi[pf->lan_vsi]->num_queue_pairs);
8748
8749         if (pf->flags & I40E_FLAG_RSS_ENABLED)
8750                 buf += sprintf(buf, "RSS ");
8751         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
8752                 buf += sprintf(buf, "FD_ATR ");
8753         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8754                 buf += sprintf(buf, "FD_SB ");
8755                 buf += sprintf(buf, "NTUPLE ");
8756         }
8757         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
8758                 buf += sprintf(buf, "DCB ");
8759         if (pf->flags & I40E_FLAG_PTP)
8760                 buf += sprintf(buf, "PTP ");
8761 #ifdef I40E_FCOE
8762         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
8763                 buf += sprintf(buf, "FCOE ");
8764 #endif
8765
8766         BUG_ON(buf > (string + INFO_STRING_LEN));
8767         dev_info(&pf->pdev->dev, "%s\n", string);
8768         kfree(string);
8769 }
8770
8771 /**
8772  * i40e_probe - Device initialization routine
8773  * @pdev: PCI device information struct
8774  * @ent: entry in i40e_pci_tbl
8775  *
8776  * i40e_probe initializes a pf identified by a pci_dev structure.
8777  * The OS initialization, configuring of the pf private structure,
8778  * and a hardware reset occur.
8779  *
8780  * Returns 0 on success, negative on failure
8781  **/
8782 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8783 {
8784         struct i40e_pf *pf;
8785         struct i40e_hw *hw;
8786         static u16 pfs_found;
8787         u16 link_status;
8788         int err = 0;
8789         u32 len;
8790         u32 i;
8791
8792         err = pci_enable_device_mem(pdev);
8793         if (err)
8794                 return err;
8795
8796         /* set up for high or low dma */
8797         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
8798         if (err) {
8799                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
8800                 if (err) {
8801                         dev_err(&pdev->dev,
8802                                 "DMA configuration failed: 0x%x\n", err);
8803                         goto err_dma;
8804                 }
8805         }
8806
8807         /* set up pci connections */
8808         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
8809                                            IORESOURCE_MEM), i40e_driver_name);
8810         if (err) {
8811                 dev_info(&pdev->dev,
8812                          "pci_request_selected_regions failed %d\n", err);
8813                 goto err_pci_reg;
8814         }
8815
8816         pci_enable_pcie_error_reporting(pdev);
8817         pci_set_master(pdev);
8818
8819         /* Now that we have a PCI connection, we need to do the
8820          * low level device setup.  This is primarily setting up
8821          * the Admin Queue structures and then querying for the
8822          * device's current profile information.
8823          */
8824         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
8825         if (!pf) {
8826                 err = -ENOMEM;
8827                 goto err_pf_alloc;
8828         }
8829         pf->next_vsi = 0;
8830         pf->pdev = pdev;
8831         set_bit(__I40E_DOWN, &pf->state);
8832
8833         hw = &pf->hw;
8834         hw->back = pf;
8835         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
8836                               pci_resource_len(pdev, 0));
8837         if (!hw->hw_addr) {
8838                 err = -EIO;
8839                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
8840                          (unsigned int)pci_resource_start(pdev, 0),
8841                          (unsigned int)pci_resource_len(pdev, 0), err);
8842                 goto err_ioremap;
8843         }
8844         hw->vendor_id = pdev->vendor;
8845         hw->device_id = pdev->device;
8846         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
8847         hw->subsystem_vendor_id = pdev->subsystem_vendor;
8848         hw->subsystem_device_id = pdev->subsystem_device;
8849         hw->bus.device = PCI_SLOT(pdev->devfn);
8850         hw->bus.func = PCI_FUNC(pdev->devfn);
8851         pf->instance = pfs_found;
8852
8853         /* do a special CORER for clearing PXE mode once at init */
8854         if (hw->revision_id == 0 &&
8855             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
8856                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
8857                 i40e_flush(hw);
8858                 msleep(200);
8859                 pf->corer_count++;
8860
8861                 i40e_clear_pxe_mode(hw);
8862         }
8863
8864         /* Reset here to make sure all is clean and to define PF 'n' */
8865         i40e_clear_hw(hw);
8866         err = i40e_pf_reset(hw);
8867         if (err) {
8868                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
8869                 goto err_pf_reset;
8870         }
8871         pf->pfr_count++;
8872
8873         hw->aq.num_arq_entries = I40E_AQ_LEN;
8874         hw->aq.num_asq_entries = I40E_AQ_LEN;
8875         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
8876         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
8877         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
8878         snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
8879                  "%s-pf%d:misc",
8880                  dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
8881
8882         err = i40e_init_shared_code(hw);
8883         if (err) {
8884                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
8885                 goto err_pf_reset;
8886         }
8887
8888         /* set up a default setting for link flow control */
8889         pf->hw.fc.requested_mode = I40E_FC_NONE;
8890
8891         err = i40e_init_adminq(hw);
8892         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
8893         if (err) {
8894                 dev_info(&pdev->dev,
8895                          "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");
8896                 goto err_pf_reset;
8897         }
8898
8899         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
8900             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
8901                 dev_info(&pdev->dev,
8902                          "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");
8903         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
8904                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
8905                 dev_info(&pdev->dev,
8906                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
8907
8908
8909         i40e_verify_eeprom(pf);
8910
8911         /* Rev 0 hardware was never productized */
8912         if (hw->revision_id < 1)
8913                 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");
8914
8915         i40e_clear_pxe_mode(hw);
8916         err = i40e_get_capabilities(pf);
8917         if (err)
8918                 goto err_adminq_setup;
8919
8920         err = i40e_sw_init(pf);
8921         if (err) {
8922                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
8923                 goto err_sw_init;
8924         }
8925
8926         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
8927                                 hw->func_caps.num_rx_qp,
8928                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
8929         if (err) {
8930                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
8931                 goto err_init_lan_hmc;
8932         }
8933
8934         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
8935         if (err) {
8936                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
8937                 err = -ENOENT;
8938                 goto err_configure_lan_hmc;
8939         }
8940
8941         i40e_get_mac_addr(hw, hw->mac.addr);
8942         if (!is_valid_ether_addr(hw->mac.addr)) {
8943                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
8944                 err = -EIO;
8945                 goto err_mac_addr;
8946         }
8947         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
8948         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
8949         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
8950         if (is_valid_ether_addr(hw->mac.port_addr))
8951                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
8952 #ifdef I40E_FCOE
8953         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
8954         if (err)
8955                 dev_info(&pdev->dev,
8956                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
8957         if (!is_valid_ether_addr(hw->mac.san_addr)) {
8958                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
8959                          hw->mac.san_addr);
8960                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
8961         }
8962         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
8963 #endif /* I40E_FCOE */
8964
8965         pci_set_drvdata(pdev, pf);
8966         pci_save_state(pdev);
8967 #ifdef CONFIG_I40E_DCB
8968         err = i40e_init_pf_dcb(pf);
8969         if (err) {
8970                 dev_info(&pdev->dev, "init_pf_dcb failed: %d\n", err);
8971                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
8972                 /* Continue without DCB enabled */
8973         }
8974 #endif /* CONFIG_I40E_DCB */
8975
8976         /* set up periodic task facility */
8977         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
8978         pf->service_timer_period = HZ;
8979
8980         INIT_WORK(&pf->service_task, i40e_service_task);
8981         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
8982         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
8983         pf->link_check_timeout = jiffies;
8984
8985         /* WoL defaults to disabled */
8986         pf->wol_en = false;
8987         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
8988
8989         /* set up the main switch operations */
8990         i40e_determine_queue_usage(pf);
8991         i40e_init_interrupt_scheme(pf);
8992
8993         /* The number of VSIs reported by the FW is the minimum guaranteed
8994          * to us; HW supports far more and we share the remaining pool with
8995          * the other PFs. We allocate space for more than the guarantee with
8996          * the understanding that we might not get them all later.
8997          */
8998         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
8999                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
9000         else
9001                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
9002
9003         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
9004         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
9005         pf->vsi = kzalloc(len, GFP_KERNEL);
9006         if (!pf->vsi) {
9007                 err = -ENOMEM;
9008                 goto err_switch_setup;
9009         }
9010
9011         err = i40e_setup_pf_switch(pf, false);
9012         if (err) {
9013                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
9014                 goto err_vsis;
9015         }
9016         /* if FDIR VSI was set up, start it now */
9017         for (i = 0; i < pf->num_alloc_vsi; i++) {
9018                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
9019                         i40e_vsi_open(pf->vsi[i]);
9020                         break;
9021                 }
9022         }
9023
9024         /* The main driver is (mostly) up and happy. We need to set this state
9025          * before setting up the misc vector or we get a race and the vector
9026          * ends up disabled forever.
9027          */
9028         clear_bit(__I40E_DOWN, &pf->state);
9029
9030         /* In case of MSIX we are going to setup the misc vector right here
9031          * to handle admin queue events etc. In case of legacy and MSI
9032          * the misc functionality and queue processing is combined in
9033          * the same vector and that gets setup at open.
9034          */
9035         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9036                 err = i40e_setup_misc_vector(pf);
9037                 if (err) {
9038                         dev_info(&pdev->dev,
9039                                  "setup of misc vector failed: %d\n", err);
9040                         goto err_vsis;
9041                 }
9042         }
9043
9044 #ifdef CONFIG_PCI_IOV
9045         /* prep for VF support */
9046         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9047             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
9048             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
9049                 u32 val;
9050
9051                 /* disable link interrupts for VFs */
9052                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
9053                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
9054                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
9055                 i40e_flush(hw);
9056
9057                 if (pci_num_vf(pdev)) {
9058                         dev_info(&pdev->dev,
9059                                  "Active VFs found, allocating resources.\n");
9060                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
9061                         if (err)
9062                                 dev_info(&pdev->dev,
9063                                          "Error %d allocating resources for existing VFs\n",
9064                                          err);
9065                 }
9066         }
9067 #endif /* CONFIG_PCI_IOV */
9068
9069         pfs_found++;
9070
9071         i40e_dbg_pf_init(pf);
9072
9073         /* tell the firmware that we're starting */
9074         i40e_send_version(pf);
9075
9076         /* since everything's happy, start the service_task timer */
9077         mod_timer(&pf->service_timer,
9078                   round_jiffies(jiffies + pf->service_timer_period));
9079
9080 #ifdef I40E_FCOE
9081         /* create FCoE interface */
9082         i40e_fcoe_vsi_setup(pf);
9083
9084 #endif
9085         /* Get the negotiated link width and speed from PCI config space */
9086         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
9087
9088         i40e_set_pci_config_data(hw, link_status);
9089
9090         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
9091                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
9092                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
9093                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
9094                  "Unknown"),
9095                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
9096                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
9097                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
9098                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
9099                  "Unknown"));
9100
9101         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
9102             hw->bus.speed < i40e_bus_speed_8000) {
9103                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
9104                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
9105         }
9106
9107         /* print a string summarizing features */
9108         i40e_print_features(pf);
9109
9110         return 0;
9111
9112         /* Unwind what we've done if something failed in the setup */
9113 err_vsis:
9114         set_bit(__I40E_DOWN, &pf->state);
9115         i40e_clear_interrupt_scheme(pf);
9116         kfree(pf->vsi);
9117 err_switch_setup:
9118         i40e_reset_interrupt_capability(pf);
9119         del_timer_sync(&pf->service_timer);
9120 err_mac_addr:
9121 err_configure_lan_hmc:
9122         (void)i40e_shutdown_lan_hmc(hw);
9123 err_init_lan_hmc:
9124         kfree(pf->qp_pile);
9125         kfree(pf->irq_pile);
9126 err_sw_init:
9127 err_adminq_setup:
9128         (void)i40e_shutdown_adminq(hw);
9129 err_pf_reset:
9130         iounmap(hw->hw_addr);
9131 err_ioremap:
9132         kfree(pf);
9133 err_pf_alloc:
9134         pci_disable_pcie_error_reporting(pdev);
9135         pci_release_selected_regions(pdev,
9136                                      pci_select_bars(pdev, IORESOURCE_MEM));
9137 err_pci_reg:
9138 err_dma:
9139         pci_disable_device(pdev);
9140         return err;
9141 }
9142
9143 /**
9144  * i40e_remove - Device removal routine
9145  * @pdev: PCI device information struct
9146  *
9147  * i40e_remove is called by the PCI subsystem to alert the driver
9148  * that is should release a PCI device.  This could be caused by a
9149  * Hot-Plug event, or because the driver is going to be removed from
9150  * memory.
9151  **/
9152 static void i40e_remove(struct pci_dev *pdev)
9153 {
9154         struct i40e_pf *pf = pci_get_drvdata(pdev);
9155         i40e_status ret_code;
9156         int i;
9157
9158         i40e_dbg_pf_exit(pf);
9159
9160         i40e_ptp_stop(pf);
9161
9162         /* no more scheduling of any task */
9163         set_bit(__I40E_DOWN, &pf->state);
9164         del_timer_sync(&pf->service_timer);
9165         cancel_work_sync(&pf->service_task);
9166
9167         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
9168                 i40e_free_vfs(pf);
9169                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
9170         }
9171
9172         i40e_fdir_teardown(pf);
9173
9174         /* If there is a switch structure or any orphans, remove them.
9175          * This will leave only the PF's VSI remaining.
9176          */
9177         for (i = 0; i < I40E_MAX_VEB; i++) {
9178                 if (!pf->veb[i])
9179                         continue;
9180
9181                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
9182                     pf->veb[i]->uplink_seid == 0)
9183                         i40e_switch_branch_release(pf->veb[i]);
9184         }
9185
9186         /* Now we can shutdown the PF's VSI, just before we kill
9187          * adminq and hmc.
9188          */
9189         if (pf->vsi[pf->lan_vsi])
9190                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
9191
9192         i40e_stop_misc_vector(pf);
9193         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9194                 synchronize_irq(pf->msix_entries[0].vector);
9195                 free_irq(pf->msix_entries[0].vector, pf);
9196         }
9197
9198         /* shutdown and destroy the HMC */
9199         if (pf->hw.hmc.hmc_obj) {
9200                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
9201                 if (ret_code)
9202                         dev_warn(&pdev->dev,
9203                                  "Failed to destroy the HMC resources: %d\n",
9204                                  ret_code);
9205         }
9206
9207         /* shutdown the adminq */
9208         ret_code = i40e_shutdown_adminq(&pf->hw);
9209         if (ret_code)
9210                 dev_warn(&pdev->dev,
9211                          "Failed to destroy the Admin Queue resources: %d\n",
9212                          ret_code);
9213
9214         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
9215         i40e_clear_interrupt_scheme(pf);
9216         for (i = 0; i < pf->num_alloc_vsi; i++) {
9217                 if (pf->vsi[i]) {
9218                         i40e_vsi_clear_rings(pf->vsi[i]);
9219                         i40e_vsi_clear(pf->vsi[i]);
9220                         pf->vsi[i] = NULL;
9221                 }
9222         }
9223
9224         for (i = 0; i < I40E_MAX_VEB; i++) {
9225                 kfree(pf->veb[i]);
9226                 pf->veb[i] = NULL;
9227         }
9228
9229         kfree(pf->qp_pile);
9230         kfree(pf->irq_pile);
9231         kfree(pf->vsi);
9232
9233         iounmap(pf->hw.hw_addr);
9234         kfree(pf);
9235         pci_release_selected_regions(pdev,
9236                                      pci_select_bars(pdev, IORESOURCE_MEM));
9237
9238         pci_disable_pcie_error_reporting(pdev);
9239         pci_disable_device(pdev);
9240 }
9241
9242 /**
9243  * i40e_pci_error_detected - warning that something funky happened in PCI land
9244  * @pdev: PCI device information struct
9245  *
9246  * Called to warn that something happened and the error handling steps
9247  * are in progress.  Allows the driver to quiesce things, be ready for
9248  * remediation.
9249  **/
9250 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
9251                                                 enum pci_channel_state error)
9252 {
9253         struct i40e_pf *pf = pci_get_drvdata(pdev);
9254
9255         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
9256
9257         /* shutdown all operations */
9258         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
9259                 rtnl_lock();
9260                 i40e_prep_for_reset(pf);
9261                 rtnl_unlock();
9262         }
9263
9264         /* Request a slot reset */
9265         return PCI_ERS_RESULT_NEED_RESET;
9266 }
9267
9268 /**
9269  * i40e_pci_error_slot_reset - a PCI slot reset just happened
9270  * @pdev: PCI device information struct
9271  *
9272  * Called to find if the driver can work with the device now that
9273  * the pci slot has been reset.  If a basic connection seems good
9274  * (registers are readable and have sane content) then return a
9275  * happy little PCI_ERS_RESULT_xxx.
9276  **/
9277 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
9278 {
9279         struct i40e_pf *pf = pci_get_drvdata(pdev);
9280         pci_ers_result_t result;
9281         int err;
9282         u32 reg;
9283
9284         dev_info(&pdev->dev, "%s\n", __func__);
9285         if (pci_enable_device_mem(pdev)) {
9286                 dev_info(&pdev->dev,
9287                          "Cannot re-enable PCI device after reset.\n");
9288                 result = PCI_ERS_RESULT_DISCONNECT;
9289         } else {
9290                 pci_set_master(pdev);
9291                 pci_restore_state(pdev);
9292                 pci_save_state(pdev);
9293                 pci_wake_from_d3(pdev, false);
9294
9295                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
9296                 if (reg == 0)
9297                         result = PCI_ERS_RESULT_RECOVERED;
9298                 else
9299                         result = PCI_ERS_RESULT_DISCONNECT;
9300         }
9301
9302         err = pci_cleanup_aer_uncorrect_error_status(pdev);
9303         if (err) {
9304                 dev_info(&pdev->dev,
9305                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
9306                          err);
9307                 /* non-fatal, continue */
9308         }
9309
9310         return result;
9311 }
9312
9313 /**
9314  * i40e_pci_error_resume - restart operations after PCI error recovery
9315  * @pdev: PCI device information struct
9316  *
9317  * Called to allow the driver to bring things back up after PCI error
9318  * and/or reset recovery has finished.
9319  **/
9320 static void i40e_pci_error_resume(struct pci_dev *pdev)
9321 {
9322         struct i40e_pf *pf = pci_get_drvdata(pdev);
9323
9324         dev_info(&pdev->dev, "%s\n", __func__);
9325         if (test_bit(__I40E_SUSPENDED, &pf->state))
9326                 return;
9327
9328         rtnl_lock();
9329         i40e_handle_reset_warning(pf);
9330         rtnl_lock();
9331 }
9332
9333 /**
9334  * i40e_shutdown - PCI callback for shutting down
9335  * @pdev: PCI device information struct
9336  **/
9337 static void i40e_shutdown(struct pci_dev *pdev)
9338 {
9339         struct i40e_pf *pf = pci_get_drvdata(pdev);
9340         struct i40e_hw *hw = &pf->hw;
9341
9342         set_bit(__I40E_SUSPENDED, &pf->state);
9343         set_bit(__I40E_DOWN, &pf->state);
9344         rtnl_lock();
9345         i40e_prep_for_reset(pf);
9346         rtnl_unlock();
9347
9348         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9349         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9350
9351         if (system_state == SYSTEM_POWER_OFF) {
9352                 pci_wake_from_d3(pdev, pf->wol_en);
9353                 pci_set_power_state(pdev, PCI_D3hot);
9354         }
9355 }
9356
9357 #ifdef CONFIG_PM
9358 /**
9359  * i40e_suspend - PCI callback for moving to D3
9360  * @pdev: PCI device information struct
9361  **/
9362 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
9363 {
9364         struct i40e_pf *pf = pci_get_drvdata(pdev);
9365         struct i40e_hw *hw = &pf->hw;
9366
9367         set_bit(__I40E_SUSPENDED, &pf->state);
9368         set_bit(__I40E_DOWN, &pf->state);
9369         rtnl_lock();
9370         i40e_prep_for_reset(pf);
9371         rtnl_unlock();
9372
9373         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9374         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9375
9376         pci_wake_from_d3(pdev, pf->wol_en);
9377         pci_set_power_state(pdev, PCI_D3hot);
9378
9379         return 0;
9380 }
9381
9382 /**
9383  * i40e_resume - PCI callback for waking up from D3
9384  * @pdev: PCI device information struct
9385  **/
9386 static int i40e_resume(struct pci_dev *pdev)
9387 {
9388         struct i40e_pf *pf = pci_get_drvdata(pdev);
9389         u32 err;
9390
9391         pci_set_power_state(pdev, PCI_D0);
9392         pci_restore_state(pdev);
9393         /* pci_restore_state() clears dev->state_saves, so
9394          * call pci_save_state() again to restore it.
9395          */
9396         pci_save_state(pdev);
9397
9398         err = pci_enable_device_mem(pdev);
9399         if (err) {
9400                 dev_err(&pdev->dev,
9401                         "%s: Cannot enable PCI device from suspend\n",
9402                         __func__);
9403                 return err;
9404         }
9405         pci_set_master(pdev);
9406
9407         /* no wakeup events while running */
9408         pci_wake_from_d3(pdev, false);
9409
9410         /* handling the reset will rebuild the device state */
9411         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
9412                 clear_bit(__I40E_DOWN, &pf->state);
9413                 rtnl_lock();
9414                 i40e_reset_and_rebuild(pf, false);
9415                 rtnl_unlock();
9416         }
9417
9418         return 0;
9419 }
9420
9421 #endif
9422 static const struct pci_error_handlers i40e_err_handler = {
9423         .error_detected = i40e_pci_error_detected,
9424         .slot_reset = i40e_pci_error_slot_reset,
9425         .resume = i40e_pci_error_resume,
9426 };
9427
9428 static struct pci_driver i40e_driver = {
9429         .name     = i40e_driver_name,
9430         .id_table = i40e_pci_tbl,
9431         .probe    = i40e_probe,
9432         .remove   = i40e_remove,
9433 #ifdef CONFIG_PM
9434         .suspend  = i40e_suspend,
9435         .resume   = i40e_resume,
9436 #endif
9437         .shutdown = i40e_shutdown,
9438         .err_handler = &i40e_err_handler,
9439         .sriov_configure = i40e_pci_sriov_configure,
9440 };
9441
9442 /**
9443  * i40e_init_module - Driver registration routine
9444  *
9445  * i40e_init_module is the first routine called when the driver is
9446  * loaded. All it does is register with the PCI subsystem.
9447  **/
9448 static int __init i40e_init_module(void)
9449 {
9450         pr_info("%s: %s - version %s\n", i40e_driver_name,
9451                 i40e_driver_string, i40e_driver_version_str);
9452         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
9453         i40e_dbg_init();
9454         return pci_register_driver(&i40e_driver);
9455 }
9456 module_init(i40e_init_module);
9457
9458 /**
9459  * i40e_exit_module - Driver exit cleanup routine
9460  *
9461  * i40e_exit_module is called just before the driver is removed
9462  * from memory.
9463  **/
9464 static void __exit i40e_exit_module(void)
9465 {
9466         pci_unregister_driver(&i40e_driver);
9467         i40e_dbg_exit();
9468 }
9469 module_exit(i40e_exit_module);