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 1
  41 #define DRV_VERSION_MINOR 1
  42 #define DRV_VERSION_BUILD 23
  43 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  44              __stringify(DRV_VERSION_MINOR) "." \
  45              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  46 const char i40e_driver_version_str[] = DRV_VERSION;
  47 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  48
  49 /* a bit of forward declarations */
  50 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  51 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  52 static int i40e_add_vsi(struct i40e_vsi *vsi);
  53 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  54 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  55 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  56 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  57 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  58 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  59 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  60
  61 /* i40e_pci_tbl - PCI Device ID Table
  62  *
  63  * Last entry must be all 0s
  64  *
  65  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  66  *   Class, Class Mask, private data (not used) }
  67  */
  68 static const struct pci_device_id i40e_pci_tbl[] = {
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  78         /* required last entry */
  79         {0, }
  80 };
  81 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  82
  83 #define I40E_MAX_VF_COUNT 128
  84 static int debug = -1;
  85 module_param(debug, int, 0);
  86 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  87
  88 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  89 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  90 MODULE_LICENSE("GPL");
  91 MODULE_VERSION(DRV_VERSION);
  92
  93 /**
  94  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  95  * @hw:   pointer to the HW structure
  96  * @mem:  ptr to mem struct to fill out
  97  * @size: size of memory requested
  98  * @alignment: what to align the allocation to
  99  **/
 100 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 101                             u64 size, u32 alignment)
 102 {
 103         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 104
 105         mem->size = ALIGN(size, alignment);
 106         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 107                                       &mem->pa, GFP_KERNEL);
 108         if (!mem->va)
 109                 return -ENOMEM;
 110
 111         return 0;
 112 }
 113
 114 /**
 115  * i40e_free_dma_mem_d - OS specific memory free for shared code
 116  * @hw:   pointer to the HW structure
 117  * @mem:  ptr to mem struct to free
 118  **/
 119 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 120 {
 121         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 122
 123         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 124         mem->va = NULL;
 125         mem->pa = 0;
 126         mem->size = 0;
 127
 128         return 0;
 129 }
 130
 131 /**
 132  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 133  * @hw:   pointer to the HW structure
 134  * @mem:  ptr to mem struct to fill out
 135  * @size: size of memory requested
 136  **/
 137 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 138                              u32 size)
 139 {
 140         mem->size = size;
 141         mem->va = kzalloc(size, GFP_KERNEL);
 142
 143         if (!mem->va)
 144                 return -ENOMEM;
 145
 146         return 0;
 147 }
 148
 149 /**
 150  * i40e_free_virt_mem_d - OS specific memory free for shared code
 151  * @hw:   pointer to the HW structure
 152  * @mem:  ptr to mem struct to free
 153  **/
 154 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 155 {
 156         /* it's ok to kfree a NULL pointer */
 157         kfree(mem->va);
 158         mem->va = NULL;
 159         mem->size = 0;
 160
 161         return 0;
 162 }
 163
 164 /**
 165  * i40e_get_lump - find a lump of free generic resource
 166  * @pf: board private structure
 167  * @pile: the pile of resource to search
 168  * @needed: the number of items needed
 169  * @id: an owner id to stick on the items assigned
 170  *
 171  * Returns the base item index of the lump, or negative for error
 172  *
 173  * The search_hint trick and lack of advanced fit-finding only work
 174  * because we're highly likely to have all the same size lump requests.
 175  * Linear search time and any fragmentation should be minimal.
 176  **/
 177 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 178                          u16 needed, u16 id)
 179 {
 180         int ret = -ENOMEM;
 181         int i, j;
 182
 183         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 184                 dev_info(&pf->pdev->dev,
 185                          "param err: pile=%p needed=%d id=0x%04x\n",
 186                          pile, needed, id);
 187                 return -EINVAL;
 188         }
 189
 190         /* start the linear search with an imperfect hint */
 191         i = pile->search_hint;
 192         while (i < pile->num_entries) {
 193                 /* skip already allocated entries */
 194                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 195                         i++;
 196                         continue;
 197                 }
 198
 199                 /* do we have enough in this lump? */
 200                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 201                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 202                                 break;
 203                 }
 204
 205                 if (j == needed) {
 206                         /* there was enough, so assign it to the requestor */
 207                         for (j = 0; j < needed; j++)
 208                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 209                         ret = i;
 210                         pile->search_hint = i + j;
 211                         break;
 212                 } else {
 213                         /* not enough, so skip over it and continue looking */
 214                         i += j;
 215                 }
 216         }
 217
 218         return ret;
 219 }
 220
 221 /**
 222  * i40e_put_lump - return a lump of generic resource
 223  * @pile: the pile of resource to search
 224  * @index: the base item index
 225  * @id: the owner id of the items assigned
 226  *
 227  * Returns the count of items in the lump
 228  **/
 229 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 230 {
 231         int valid_id = (id | I40E_PILE_VALID_BIT);
 232         int count = 0;
 233         int i;
 234
 235         if (!pile || index >= pile->num_entries)
 236                 return -EINVAL;
 237
 238         for (i = index;
 239              i < pile->num_entries && pile->list[i] == valid_id;
 240              i++) {
 241                 pile->list[i] = 0;
 242                 count++;
 243         }
 244
 245         if (count && index < pile->search_hint)
 246                 pile->search_hint = index;
 247
 248         return count;
 249 }
 250
 251 /**
 252  * i40e_service_event_schedule - Schedule the service task to wake up
 253  * @pf: board private structure
 254  *
 255  * If not already scheduled, this puts the task into the work queue
 256  **/
 257 static void i40e_service_event_schedule(struct i40e_pf *pf)
 258 {
 259         if (!test_bit(__I40E_DOWN, &pf->state) &&
 260             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 261             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 262                 schedule_work(&pf->service_task);
 263 }
 264
 265 /**
 266  * i40e_tx_timeout - Respond to a Tx Hang
 267  * @netdev: network interface device structure
 268  *
 269  * If any port has noticed a Tx timeout, it is likely that the whole
 270  * device is munged, not just the one netdev port, so go for the full
 271  * reset.
 272  **/
 273 #ifdef I40E_FCOE
 274 void i40e_tx_timeout(struct net_device *netdev)
 275 #else
 276 static void i40e_tx_timeout(struct net_device *netdev)
 277 #endif
 278 {
 279         struct i40e_netdev_priv *np = netdev_priv(netdev);
 280         struct i40e_vsi *vsi = np->vsi;
 281         struct i40e_pf *pf = vsi->back;
 282
 283         pf->tx_timeout_count++;
 284
 285         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 286                 pf->tx_timeout_recovery_level = 1;
 287         pf->tx_timeout_last_recovery = jiffies;
 288         netdev_info(netdev, "tx_timeout recovery level %d\n",
 289                     pf->tx_timeout_recovery_level);
 290
 291         switch (pf->tx_timeout_recovery_level) {
 292         case 0:
 293                 /* disable and re-enable queues for the VSI */
 294                 if (in_interrupt()) {
 295                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 296                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 297                 } else {
 298                         i40e_vsi_reinit_locked(vsi);
 299                 }
 300                 break;
 301         case 1:
 302                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 303                 break;
 304         case 2:
 305                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 306                 break;
 307         case 3:
 308                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 309                 break;
 310         default:
 311                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 312                 set_bit(__I40E_DOWN_REQUESTED, &pf->state);
 313                 set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
 314                 break;
 315         }
 316         i40e_service_event_schedule(pf);
 317         pf->tx_timeout_recovery_level++;
 318 }
 319
 320 /**
 321  * i40e_release_rx_desc - Store the new tail and head values
 322  * @rx_ring: ring to bump
 323  * @val: new head index
 324  **/
 325 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 326 {
 327         rx_ring->next_to_use = val;
 328
 329         /* Force memory writes to complete before letting h/w
 330          * know there are new descriptors to fetch.  (Only
 331          * applicable for weak-ordered memory model archs,
 332          * such as IA-64).
 333          */
 334         wmb();
 335         writel(val, rx_ring->tail);
 336 }
 337
 338 /**
 339  * i40e_get_vsi_stats_struct - Get System Network Statistics
 340  * @vsi: the VSI we care about
 341  *
 342  * Returns the address of the device statistics structure.
 343  * The statistics are actually updated from the service task.
 344  **/
 345 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 346 {
 347         return &vsi->net_stats;
 348 }
 349
 350 /**
 351  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 352  * @netdev: network interface device structure
 353  *
 354  * Returns the address of the device statistics structure.
 355  * The statistics are actually updated from the service task.
 356  **/
 357 #ifdef I40E_FCOE
 358 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 359                                              struct net_device *netdev,
 360                                              struct rtnl_link_stats64 *stats)
 361 #else
 362 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 363                                              struct net_device *netdev,
 364                                              struct rtnl_link_stats64 *stats)
 365 #endif
 366 {
 367         struct i40e_netdev_priv *np = netdev_priv(netdev);
 368         struct i40e_ring *tx_ring, *rx_ring;
 369         struct i40e_vsi *vsi = np->vsi;
 370         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 371         int i;
 372
 373         if (test_bit(__I40E_DOWN, &vsi->state))
 374                 return stats;
 375
 376         if (!vsi->tx_rings)
 377                 return stats;
 378
 379         rcu_read_lock();
 380         for (i = 0; i < vsi->num_queue_pairs; i++) {
 381                 u64 bytes, packets;
 382                 unsigned int start;
 383
 384                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 385                 if (!tx_ring)
 386                         continue;
 387
 388                 do {
 389                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 390                         packets = tx_ring->stats.packets;
 391                         bytes   = tx_ring->stats.bytes;
 392                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 393
 394                 stats->tx_packets += packets;
 395                 stats->tx_bytes   += bytes;
 396                 rx_ring = &tx_ring[1];
 397
 398                 do {
 399                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 400                         packets = rx_ring->stats.packets;
 401                         bytes   = rx_ring->stats.bytes;
 402                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 403
 404                 stats->rx_packets += packets;
 405                 stats->rx_bytes   += bytes;
 406         }
 407         rcu_read_unlock();
 408
 409         /* following stats updated by i40e_watchdog_subtask() */
 410         stats->multicast        = vsi_stats->multicast;
 411         stats->tx_errors        = vsi_stats->tx_errors;
 412         stats->tx_dropped       = vsi_stats->tx_dropped;
 413         stats->rx_errors        = vsi_stats->rx_errors;
 414         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 415         stats->rx_length_errors = vsi_stats->rx_length_errors;
 416
 417         return stats;
 418 }
 419
 420 /**
 421  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 422  * @vsi: the VSI to have its stats reset
 423  **/
 424 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 425 {
 426         struct rtnl_link_stats64 *ns;
 427         int i;
 428
 429         if (!vsi)
 430                 return;
 431
 432         ns = i40e_get_vsi_stats_struct(vsi);
 433         memset(ns, 0, sizeof(*ns));
 434         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 435         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 436         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 437         if (vsi->rx_rings && vsi->rx_rings[0]) {
 438                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 439                         memset(&vsi->rx_rings[i]->stats, 0 ,
 440                                sizeof(vsi->rx_rings[i]->stats));
 441                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 442                                sizeof(vsi->rx_rings[i]->rx_stats));
 443                         memset(&vsi->tx_rings[i]->stats, 0 ,
 444                                sizeof(vsi->tx_rings[i]->stats));
 445                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 446                                sizeof(vsi->tx_rings[i]->tx_stats));
 447                 }
 448         }
 449         vsi->stat_offsets_loaded = false;
 450 }
 451
 452 /**
 453  * i40e_pf_reset_stats - Reset all of the stats for the given pf
 454  * @pf: the PF to be reset
 455  **/
 456 void i40e_pf_reset_stats(struct i40e_pf *pf)
 457 {
 458         int i;
 459
 460         memset(&pf->stats, 0, sizeof(pf->stats));
 461         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 462         pf->stat_offsets_loaded = false;
 463
 464         for (i = 0; i < I40E_MAX_VEB; i++) {
 465                 if (pf->veb[i]) {
 466                         memset(&pf->veb[i]->stats, 0,
 467                                sizeof(pf->veb[i]->stats));
 468                         memset(&pf->veb[i]->stats_offsets, 0,
 469                                sizeof(pf->veb[i]->stats_offsets));
 470                         pf->veb[i]->stat_offsets_loaded = false;
 471                 }
 472         }
 473 }
 474
 475 /**
 476  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 477  * @hw: ptr to the hardware info
 478  * @hireg: the high 32 bit reg to read
 479  * @loreg: the low 32 bit reg to read
 480  * @offset_loaded: has the initial offset been loaded yet
 481  * @offset: ptr to current offset value
 482  * @stat: ptr to the stat
 483  *
 484  * Since the device stats are not reset at PFReset, they likely will not
 485  * be zeroed when the driver starts.  We'll save the first values read
 486  * and use them as offsets to be subtracted from the raw values in order
 487  * to report stats that count from zero.  In the process, we also manage
 488  * the potential roll-over.
 489  **/
 490 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 491                                bool offset_loaded, u64 *offset, u64 *stat)
 492 {
 493         u64 new_data;
 494
 495         if (hw->device_id == I40E_DEV_ID_QEMU) {
 496                 new_data = rd32(hw, loreg);
 497                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 498         } else {
 499                 new_data = rd64(hw, loreg);
 500         }
 501         if (!offset_loaded)
 502                 *offset = new_data;
 503         if (likely(new_data >= *offset))
 504                 *stat = new_data - *offset;
 505         else
 506                 *stat = (new_data + ((u64)1 << 48)) - *offset;
 507         *stat &= 0xFFFFFFFFFFFFULL;
 508 }
 509
 510 /**
 511  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 512  * @hw: ptr to the hardware info
 513  * @reg: the hw reg to read
 514  * @offset_loaded: has the initial offset been loaded yet
 515  * @offset: ptr to current offset value
 516  * @stat: ptr to the stat
 517  **/
 518 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 519                                bool offset_loaded, u64 *offset, u64 *stat)
 520 {
 521         u32 new_data;
 522
 523         new_data = rd32(hw, reg);
 524         if (!offset_loaded)
 525                 *offset = new_data;
 526         if (likely(new_data >= *offset))
 527                 *stat = (u32)(new_data - *offset);
 528         else
 529                 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
 530 }
 531
 532 /**
 533  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 534  * @vsi: the VSI to be updated
 535  **/
 536 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 537 {
 538         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 539         struct i40e_pf *pf = vsi->back;
 540         struct i40e_hw *hw = &pf->hw;
 541         struct i40e_eth_stats *oes;
 542         struct i40e_eth_stats *es;     /* device's eth stats */
 543
 544         es = &vsi->eth_stats;
 545         oes = &vsi->eth_stats_offsets;
 546
 547         /* Gather up the stats that the hw collects */
 548         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 549                            vsi->stat_offsets_loaded,
 550                            &oes->tx_errors, &es->tx_errors);
 551         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 552                            vsi->stat_offsets_loaded,
 553                            &oes->rx_discards, &es->rx_discards);
 554         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 555                            vsi->stat_offsets_loaded,
 556                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 557         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 558                            vsi->stat_offsets_loaded,
 559                            &oes->tx_errors, &es->tx_errors);
 560
 561         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 562                            I40E_GLV_GORCL(stat_idx),
 563                            vsi->stat_offsets_loaded,
 564                            &oes->rx_bytes, &es->rx_bytes);
 565         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 566                            I40E_GLV_UPRCL(stat_idx),
 567                            vsi->stat_offsets_loaded,
 568                            &oes->rx_unicast, &es->rx_unicast);
 569         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 570                            I40E_GLV_MPRCL(stat_idx),
 571                            vsi->stat_offsets_loaded,
 572                            &oes->rx_multicast, &es->rx_multicast);
 573         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 574                            I40E_GLV_BPRCL(stat_idx),
 575                            vsi->stat_offsets_loaded,
 576                            &oes->rx_broadcast, &es->rx_broadcast);
 577
 578         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 579                            I40E_GLV_GOTCL(stat_idx),
 580                            vsi->stat_offsets_loaded,
 581                            &oes->tx_bytes, &es->tx_bytes);
 582         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 583                            I40E_GLV_UPTCL(stat_idx),
 584                            vsi->stat_offsets_loaded,
 585                            &oes->tx_unicast, &es->tx_unicast);
 586         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 587                            I40E_GLV_MPTCL(stat_idx),
 588                            vsi->stat_offsets_loaded,
 589                            &oes->tx_multicast, &es->tx_multicast);
 590         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 591                            I40E_GLV_BPTCL(stat_idx),
 592                            vsi->stat_offsets_loaded,
 593                            &oes->tx_broadcast, &es->tx_broadcast);
 594         vsi->stat_offsets_loaded = true;
 595 }
 596
 597 /**
 598  * i40e_update_veb_stats - Update Switch component statistics
 599  * @veb: the VEB being updated
 600  **/
 601 static void i40e_update_veb_stats(struct i40e_veb *veb)
 602 {
 603         struct i40e_pf *pf = veb->pf;
 604         struct i40e_hw *hw = &pf->hw;
 605         struct i40e_eth_stats *oes;
 606         struct i40e_eth_stats *es;     /* device's eth stats */
 607         int idx = 0;
 608
 609         idx = veb->stats_idx;
 610         es = &veb->stats;
 611         oes = &veb->stats_offsets;
 612
 613         /* Gather up the stats that the hw collects */
 614         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 615                            veb->stat_offsets_loaded,
 616                            &oes->tx_discards, &es->tx_discards);
 617         if (hw->revision_id > 0)
 618                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 619                                    veb->stat_offsets_loaded,
 620                                    &oes->rx_unknown_protocol,
 621                                    &es->rx_unknown_protocol);
 622         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 623                            veb->stat_offsets_loaded,
 624                            &oes->rx_bytes, &es->rx_bytes);
 625         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 626                            veb->stat_offsets_loaded,
 627                            &oes->rx_unicast, &es->rx_unicast);
 628         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 629                            veb->stat_offsets_loaded,
 630                            &oes->rx_multicast, &es->rx_multicast);
 631         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 632                            veb->stat_offsets_loaded,
 633                            &oes->rx_broadcast, &es->rx_broadcast);
 634
 635         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 636                            veb->stat_offsets_loaded,
 637                            &oes->tx_bytes, &es->tx_bytes);
 638         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 639                            veb->stat_offsets_loaded,
 640                            &oes->tx_unicast, &es->tx_unicast);
 641         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 642                            veb->stat_offsets_loaded,
 643                            &oes->tx_multicast, &es->tx_multicast);
 644         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 645                            veb->stat_offsets_loaded,
 646                            &oes->tx_broadcast, &es->tx_broadcast);
 647         veb->stat_offsets_loaded = true;
 648 }
 649
 650 #ifdef I40E_FCOE
 651 /**
 652  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 653  * @vsi: the VSI that is capable of doing FCoE
 654  **/
 655 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 656 {
 657         struct i40e_pf *pf = vsi->back;
 658         struct i40e_hw *hw = &pf->hw;
 659         struct i40e_fcoe_stats *ofs;
 660         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 661         int idx;
 662
 663         if (vsi->type != I40E_VSI_FCOE)
 664                 return;
 665
 666         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 667         fs = &vsi->fcoe_stats;
 668         ofs = &vsi->fcoe_stats_offsets;
 669
 670         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 671                            vsi->fcoe_stat_offsets_loaded,
 672                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 673         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 674                            vsi->fcoe_stat_offsets_loaded,
 675                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 676         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 677                            vsi->fcoe_stat_offsets_loaded,
 678                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 679         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 680                            vsi->fcoe_stat_offsets_loaded,
 681                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 682         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 683                            vsi->fcoe_stat_offsets_loaded,
 684                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 685         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 686                            vsi->fcoe_stat_offsets_loaded,
 687                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 688         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 689                            vsi->fcoe_stat_offsets_loaded,
 690                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 691         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 692                            vsi->fcoe_stat_offsets_loaded,
 693                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 694
 695         vsi->fcoe_stat_offsets_loaded = true;
 696 }
 697
 698 #endif
 699 /**
 700  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 701  * @pf: the corresponding PF
 702  *
 703  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 704  **/
 705 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 706 {
 707         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 708         struct i40e_hw_port_stats *nsd = &pf->stats;
 709         struct i40e_hw *hw = &pf->hw;
 710         u64 xoff = 0;
 711         u16 i, v;
 712
 713         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 714             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 715                 return;
 716
 717         xoff = nsd->link_xoff_rx;
 718         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 719                            pf->stat_offsets_loaded,
 720                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 721
 722         /* No new LFC xoff rx */
 723         if (!(nsd->link_xoff_rx - xoff))
 724                 return;
 725
 726         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 727         for (v = 0; v < pf->num_alloc_vsi; v++) {
 728                 struct i40e_vsi *vsi = pf->vsi[v];
 729
 730                 if (!vsi || !vsi->tx_rings[0])
 731                         continue;
 732
 733                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 734                         struct i40e_ring *ring = vsi->tx_rings[i];
 735                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 736                 }
 737         }
 738 }
 739
 740 /**
 741  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 742  * @pf: the corresponding PF
 743  *
 744  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 745  **/
 746 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 747 {
 748         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 749         struct i40e_hw_port_stats *nsd = &pf->stats;
 750         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 751         struct i40e_dcbx_config *dcb_cfg;
 752         struct i40e_hw *hw = &pf->hw;
 753         u16 i, v;
 754         u8 tc;
 755
 756         dcb_cfg = &hw->local_dcbx_config;
 757
 758         /* See if DCB enabled with PFC TC */
 759         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 760             !(dcb_cfg->pfc.pfcenable)) {
 761                 i40e_update_link_xoff_rx(pf);
 762                 return;
 763         }
 764
 765         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 766                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 767                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 768                                    pf->stat_offsets_loaded,
 769                                    &osd->priority_xoff_rx[i],
 770                                    &nsd->priority_xoff_rx[i]);
 771
 772                 /* No new PFC xoff rx */
 773                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 774                         continue;
 775                 /* Get the TC for given priority */
 776                 tc = dcb_cfg->etscfg.prioritytable[i];
 777                 xoff[tc] = true;
 778         }
 779
 780         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 781         for (v = 0; v < pf->num_alloc_vsi; v++) {
 782                 struct i40e_vsi *vsi = pf->vsi[v];
 783
 784                 if (!vsi || !vsi->tx_rings[0])
 785                         continue;
 786
 787                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 788                         struct i40e_ring *ring = vsi->tx_rings[i];
 789
 790                         tc = ring->dcb_tc;
 791                         if (xoff[tc])
 792                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 793                                           &ring->state);
 794                 }
 795         }
 796 }
 797
 798 /**
 799  * i40e_update_vsi_stats - Update the vsi statistics counters.
 800  * @vsi: the VSI to be updated
 801  *
 802  * There are a few instances where we store the same stat in a
 803  * couple of different structs.  This is partly because we have
 804  * the netdev stats that need to be filled out, which is slightly
 805  * different from the "eth_stats" defined by the chip and used in
 806  * VF communications.  We sort it out here.
 807  **/
 808 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 809 {
 810         struct i40e_pf *pf = vsi->back;
 811         struct rtnl_link_stats64 *ons;
 812         struct rtnl_link_stats64 *ns;   /* netdev stats */
 813         struct i40e_eth_stats *oes;
 814         struct i40e_eth_stats *es;     /* device's eth stats */
 815         u32 tx_restart, tx_busy;
 816         struct i40e_ring *p;
 817         u32 rx_page, rx_buf;
 818         u64 bytes, packets;
 819         unsigned int start;
 820         u64 rx_p, rx_b;
 821         u64 tx_p, tx_b;
 822         u16 q;
 823
 824         if (test_bit(__I40E_DOWN, &vsi->state) ||
 825             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 826                 return;
 827
 828         ns = i40e_get_vsi_stats_struct(vsi);
 829         ons = &vsi->net_stats_offsets;
 830         es = &vsi->eth_stats;
 831         oes = &vsi->eth_stats_offsets;
 832
 833         /* Gather up the netdev and vsi stats that the driver collects
 834          * on the fly during packet processing
 835          */
 836         rx_b = rx_p = 0;
 837         tx_b = tx_p = 0;
 838         tx_restart = tx_busy = 0;
 839         rx_page = 0;
 840         rx_buf = 0;
 841         rcu_read_lock();
 842         for (q = 0; q < vsi->num_queue_pairs; q++) {
 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  * Some older firmware configurations set up a default promiscuous VLAN
1244  * filter that needs to be removed.
1245  **/
1246 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1247 {
1248         struct i40e_aqc_remove_macvlan_element_data element;
1249         struct i40e_pf *pf = vsi->back;
1250         i40e_status aq_ret;
1251
1252         /* Only appropriate for the PF main VSI */
1253         if (vsi->type != I40E_VSI_MAIN)
1254                 return -EINVAL;
1255
1256         memset(&element, 0, sizeof(element));
1257         ether_addr_copy(element.mac_addr, macaddr);
1258         element.vlan_tag = 0;
1259         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1260                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1261         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1262         if (aq_ret)
1263                 return -ENOENT;
1264
1265         return 0;
1266 }
1267
1268 /**
1269  * i40e_add_filter - Add a mac/vlan filter to the VSI
1270  * @vsi: the VSI to be searched
1271  * @macaddr: the MAC address
1272  * @vlan: the vlan
1273  * @is_vf: make sure its a vf filter, else doesn't matter
1274  * @is_netdev: make sure its a netdev filter, else doesn't matter
1275  *
1276  * Returns ptr to the filter object or NULL when no memory available.
1277  **/
1278 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1279                                         u8 *macaddr, s16 vlan,
1280                                         bool is_vf, bool is_netdev)
1281 {
1282         struct i40e_mac_filter *f;
1283
1284         if (!vsi || !macaddr)
1285                 return NULL;
1286
1287         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1288         if (!f) {
1289                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1290                 if (!f)
1291                         goto add_filter_out;
1292
1293                 ether_addr_copy(f->macaddr, macaddr);
1294                 f->vlan = vlan;
1295                 f->changed = true;
1296
1297                 INIT_LIST_HEAD(&f->list);
1298                 list_add(&f->list, &vsi->mac_filter_list);
1299         }
1300
1301         /* increment counter and add a new flag if needed */
1302         if (is_vf) {
1303                 if (!f->is_vf) {
1304                         f->is_vf = true;
1305                         f->counter++;
1306                 }
1307         } else if (is_netdev) {
1308                 if (!f->is_netdev) {
1309                         f->is_netdev = true;
1310                         f->counter++;
1311                 }
1312         } else {
1313                 f->counter++;
1314         }
1315
1316         /* changed tells sync_filters_subtask to
1317          * push the filter down to the firmware
1318          */
1319         if (f->changed) {
1320                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1321                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1322         }
1323
1324 add_filter_out:
1325         return f;
1326 }
1327
1328 /**
1329  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1330  * @vsi: the VSI to be searched
1331  * @macaddr: the MAC address
1332  * @vlan: the vlan
1333  * @is_vf: make sure it's a vf filter, else doesn't matter
1334  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1335  **/
1336 void i40e_del_filter(struct i40e_vsi *vsi,
1337                      u8 *macaddr, s16 vlan,
1338                      bool is_vf, bool is_netdev)
1339 {
1340         struct i40e_mac_filter *f;
1341
1342         if (!vsi || !macaddr)
1343                 return;
1344
1345         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1346         if (!f || f->counter == 0)
1347                 return;
1348
1349         if (is_vf) {
1350                 if (f->is_vf) {
1351                         f->is_vf = false;
1352                         f->counter--;
1353                 }
1354         } else if (is_netdev) {
1355                 if (f->is_netdev) {
1356                         f->is_netdev = false;
1357                         f->counter--;
1358                 }
1359         } else {
1360                 /* make sure we don't remove a filter in use by vf or netdev */
1361                 int min_f = 0;
1362                 min_f += (f->is_vf ? 1 : 0);
1363                 min_f += (f->is_netdev ? 1 : 0);
1364
1365                 if (f->counter > min_f)
1366                         f->counter--;
1367         }
1368
1369         /* counter == 0 tells sync_filters_subtask to
1370          * remove the filter from the firmware's list
1371          */
1372         if (f->counter == 0) {
1373                 f->changed = true;
1374                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1375                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1376         }
1377 }
1378
1379 /**
1380  * i40e_set_mac - NDO callback to set mac address
1381  * @netdev: network interface device structure
1382  * @p: pointer to an address structure
1383  *
1384  * Returns 0 on success, negative on failure
1385  **/
1386 #ifdef I40E_FCOE
1387 int i40e_set_mac(struct net_device *netdev, void *p)
1388 #else
1389 static int i40e_set_mac(struct net_device *netdev, void *p)
1390 #endif
1391 {
1392         struct i40e_netdev_priv *np = netdev_priv(netdev);
1393         struct i40e_vsi *vsi = np->vsi;
1394         struct i40e_pf *pf = vsi->back;
1395         struct i40e_hw *hw = &pf->hw;
1396         struct sockaddr *addr = p;
1397         struct i40e_mac_filter *f;
1398
1399         if (!is_valid_ether_addr(addr->sa_data))
1400                 return -EADDRNOTAVAIL;
1401
1402         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1403                 netdev_info(netdev, "already using mac address %pM\n",
1404                             addr->sa_data);
1405                 return 0;
1406         }
1407
1408         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1409             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1410                 return -EADDRNOTAVAIL;
1411
1412         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1413                 netdev_info(netdev, "returning to hw mac address %pM\n",
1414                             hw->mac.addr);
1415         else
1416                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1417
1418         if (vsi->type == I40E_VSI_MAIN) {
1419                 i40e_status ret;
1420                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1421                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1422                                                 addr->sa_data, NULL);
1423                 if (ret) {
1424                         netdev_info(netdev,
1425                                     "Addr change for Main VSI failed: %d\n",
1426                                     ret);
1427                         return -EADDRNOTAVAIL;
1428                 }
1429         }
1430
1431         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1432                 struct i40e_aqc_remove_macvlan_element_data element;
1433
1434                 memset(&element, 0, sizeof(element));
1435                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1436                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1437                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1438         } else {
1439                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1440                                 false, false);
1441         }
1442
1443         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1444                 struct i40e_aqc_add_macvlan_element_data element;
1445
1446                 memset(&element, 0, sizeof(element));
1447                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1448                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1449                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1450         } else {
1451                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1452                                     false, false);
1453                 if (f)
1454                         f->is_laa = true;
1455         }
1456
1457         i40e_sync_vsi_filters(vsi);
1458         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1459
1460         return 0;
1461 }
1462
1463 /**
1464  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1465  * @vsi: the VSI being setup
1466  * @ctxt: VSI context structure
1467  * @enabled_tc: Enabled TCs bitmap
1468  * @is_add: True if called before Add VSI
1469  *
1470  * Setup VSI queue mapping for enabled traffic classes.
1471  **/
1472 #ifdef I40E_FCOE
1473 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1474                               struct i40e_vsi_context *ctxt,
1475                               u8 enabled_tc,
1476                               bool is_add)
1477 #else
1478 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1479                                      struct i40e_vsi_context *ctxt,
1480                                      u8 enabled_tc,
1481                                      bool is_add)
1482 #endif
1483 {
1484         struct i40e_pf *pf = vsi->back;
1485         u16 sections = 0;
1486         u8 netdev_tc = 0;
1487         u16 numtc = 0;
1488         u16 qcount;
1489         u8 offset;
1490         u16 qmap;
1491         int i;
1492         u16 num_tc_qps = 0;
1493
1494         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1495         offset = 0;
1496
1497         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1498                 /* Find numtc from enabled TC bitmap */
1499                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1500                         if (enabled_tc & (1 << i)) /* TC is enabled */
1501                                 numtc++;
1502                 }
1503                 if (!numtc) {
1504                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1505                         numtc = 1;
1506                 }
1507         } else {
1508                 /* At least TC0 is enabled in case of non-DCB case */
1509                 numtc = 1;
1510         }
1511
1512         vsi->tc_config.numtc = numtc;
1513         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1514         /* Number of queues per enabled TC */
1515         num_tc_qps = vsi->alloc_queue_pairs/numtc;
1516         num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
1517
1518         /* Setup queue offset/count for all TCs for given VSI */
1519         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1520                 /* See if the given TC is enabled for the given VSI */
1521                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1522                         int pow, num_qps;
1523
1524                         switch (vsi->type) {
1525                         case I40E_VSI_MAIN:
1526                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1527                                 break;
1528 #ifdef I40E_FCOE
1529                         case I40E_VSI_FCOE:
1530                                 qcount = num_tc_qps;
1531                                 break;
1532 #endif
1533                         case I40E_VSI_FDIR:
1534                         case I40E_VSI_SRIOV:
1535                         case I40E_VSI_VMDQ2:
1536                         default:
1537                                 qcount = num_tc_qps;
1538                                 WARN_ON(i != 0);
1539                                 break;
1540                         }
1541                         vsi->tc_config.tc_info[i].qoffset = offset;
1542                         vsi->tc_config.tc_info[i].qcount = qcount;
1543
1544                         /* find the power-of-2 of the number of queue pairs */
1545                         num_qps = qcount;
1546                         pow = 0;
1547                         while (num_qps && ((1 << pow) < qcount)) {
1548                                 pow++;
1549                                 num_qps >>= 1;
1550                         }
1551
1552                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1553                         qmap =
1554                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1555                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1556
1557                         offset += qcount;
1558                 } else {
1559                         /* TC is not enabled so set the offset to
1560                          * default queue and allocate one queue
1561                          * for the given TC.
1562                          */
1563                         vsi->tc_config.tc_info[i].qoffset = 0;
1564                         vsi->tc_config.tc_info[i].qcount = 1;
1565                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1566
1567                         qmap = 0;
1568                 }
1569                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1570         }
1571
1572         /* Set actual Tx/Rx queue pairs */
1573         vsi->num_queue_pairs = offset;
1574
1575         /* Scheduler section valid can only be set for ADD VSI */
1576         if (is_add) {
1577                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1578
1579                 ctxt->info.up_enable_bits = enabled_tc;
1580         }
1581         if (vsi->type == I40E_VSI_SRIOV) {
1582                 ctxt->info.mapping_flags |=
1583                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1584                 for (i = 0; i < vsi->num_queue_pairs; i++)
1585                         ctxt->info.queue_mapping[i] =
1586                                                cpu_to_le16(vsi->base_queue + i);
1587         } else {
1588                 ctxt->info.mapping_flags |=
1589                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1590                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1591         }
1592         ctxt->info.valid_sections |= cpu_to_le16(sections);
1593 }
1594
1595 /**
1596  * i40e_set_rx_mode - NDO callback to set the netdev filters
1597  * @netdev: network interface device structure
1598  **/
1599 #ifdef I40E_FCOE
1600 void i40e_set_rx_mode(struct net_device *netdev)
1601 #else
1602 static void i40e_set_rx_mode(struct net_device *netdev)
1603 #endif
1604 {
1605         struct i40e_netdev_priv *np = netdev_priv(netdev);
1606         struct i40e_mac_filter *f, *ftmp;
1607         struct i40e_vsi *vsi = np->vsi;
1608         struct netdev_hw_addr *uca;
1609         struct netdev_hw_addr *mca;
1610         struct netdev_hw_addr *ha;
1611
1612         /* add addr if not already in the filter list */
1613         netdev_for_each_uc_addr(uca, netdev) {
1614                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1615                         if (i40e_is_vsi_in_vlan(vsi))
1616                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1617                                                      false, true);
1618                         else
1619                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1620                                                 false, true);
1621                 }
1622         }
1623
1624         netdev_for_each_mc_addr(mca, netdev) {
1625                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1626                         if (i40e_is_vsi_in_vlan(vsi))
1627                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1628                                                      false, true);
1629                         else
1630                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1631                                                 false, true);
1632                 }
1633         }
1634
1635         /* remove filter if not in netdev list */
1636         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1637                 bool found = false;
1638
1639                 if (!f->is_netdev)
1640                         continue;
1641
1642                 if (is_multicast_ether_addr(f->macaddr)) {
1643                         netdev_for_each_mc_addr(mca, netdev) {
1644                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1645                                         found = true;
1646                                         break;
1647                                 }
1648                         }
1649                 } else {
1650                         netdev_for_each_uc_addr(uca, netdev) {
1651                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1652                                         found = true;
1653                                         break;
1654                                 }
1655                         }
1656
1657                         for_each_dev_addr(netdev, ha) {
1658                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1659                                         found = true;
1660                                         break;
1661                                 }
1662                         }
1663                 }
1664                 if (!found)
1665                         i40e_del_filter(
1666                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1667         }
1668
1669         /* check for other flag changes */
1670         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1671                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1672                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1673         }
1674 }
1675
1676 /**
1677  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1678  * @vsi: ptr to the VSI
1679  *
1680  * Push any outstanding VSI filter changes through the AdminQ.
1681  *
1682  * Returns 0 or error value
1683  **/
1684 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1685 {
1686         struct i40e_mac_filter *f, *ftmp;
1687         bool promisc_forced_on = false;
1688         bool add_happened = false;
1689         int filter_list_len = 0;
1690         u32 changed_flags = 0;
1691         i40e_status aq_ret = 0;
1692         struct i40e_pf *pf;
1693         int num_add = 0;
1694         int num_del = 0;
1695         u16 cmd_flags;
1696
1697         /* empty array typed pointers, kcalloc later */
1698         struct i40e_aqc_add_macvlan_element_data *add_list;
1699         struct i40e_aqc_remove_macvlan_element_data *del_list;
1700
1701         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1702                 usleep_range(1000, 2000);
1703         pf = vsi->back;
1704
1705         if (vsi->netdev) {
1706                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1707                 vsi->current_netdev_flags = vsi->netdev->flags;
1708         }
1709
1710         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1711                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1712
1713                 filter_list_len = pf->hw.aq.asq_buf_size /
1714                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1715                 del_list = kcalloc(filter_list_len,
1716                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1717                             GFP_KERNEL);
1718                 if (!del_list)
1719                         return -ENOMEM;
1720
1721                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1722                         if (!f->changed)
1723                                 continue;
1724
1725                         if (f->counter != 0)
1726                                 continue;
1727                         f->changed = false;
1728                         cmd_flags = 0;
1729
1730                         /* add to delete list */
1731                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1732                         del_list[num_del].vlan_tag =
1733                                 cpu_to_le16((u16)(f->vlan ==
1734                                             I40E_VLAN_ANY ? 0 : f->vlan));
1735
1736                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1737                         del_list[num_del].flags = cmd_flags;
1738                         num_del++;
1739
1740                         /* unlink from filter list */
1741                         list_del(&f->list);
1742                         kfree(f);
1743
1744                         /* flush a full buffer */
1745                         if (num_del == filter_list_len) {
1746                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1747                                             vsi->seid, del_list, num_del,
1748                                             NULL);
1749                                 num_del = 0;
1750                                 memset(del_list, 0, sizeof(*del_list));
1751
1752                                 if (aq_ret &&
1753                                     pf->hw.aq.asq_last_status !=
1754                                                               I40E_AQ_RC_ENOENT)
1755                                         dev_info(&pf->pdev->dev,
1756                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1757                                                  aq_ret,
1758                                                  pf->hw.aq.asq_last_status);
1759                         }
1760                 }
1761                 if (num_del) {
1762                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1763                                                      del_list, num_del, NULL);
1764                         num_del = 0;
1765
1766                         if (aq_ret &&
1767                             pf->hw.aq.asq_last_status != I40E_AQ_RC_ENOENT)
1768                                 dev_info(&pf->pdev->dev,
1769                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1770                                          aq_ret, pf->hw.aq.asq_last_status);
1771                 }
1772
1773                 kfree(del_list);
1774                 del_list = NULL;
1775
1776                 /* do all the adds now */
1777                 filter_list_len = pf->hw.aq.asq_buf_size /
1778                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1779                 add_list = kcalloc(filter_list_len,
1780                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1781                                GFP_KERNEL);
1782                 if (!add_list)
1783                         return -ENOMEM;
1784
1785                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1786                         if (!f->changed)
1787                                 continue;
1788
1789                         if (f->counter == 0)
1790                                 continue;
1791                         f->changed = false;
1792                         add_happened = true;
1793                         cmd_flags = 0;
1794
1795                         /* add to add array */
1796                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1797                         add_list[num_add].vlan_tag =
1798                                 cpu_to_le16(
1799                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1800                         add_list[num_add].queue_number = 0;
1801
1802                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1803                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1804                         num_add++;
1805
1806                         /* flush a full buffer */
1807                         if (num_add == filter_list_len) {
1808                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1809                                                              add_list, num_add,
1810                                                              NULL);
1811                                 num_add = 0;
1812
1813                                 if (aq_ret)
1814                                         break;
1815                                 memset(add_list, 0, sizeof(*add_list));
1816                         }
1817                 }
1818                 if (num_add) {
1819                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1820                                                      add_list, num_add, NULL);
1821                         num_add = 0;
1822                 }
1823                 kfree(add_list);
1824                 add_list = NULL;
1825
1826                 if (add_happened && aq_ret &&
1827                     pf->hw.aq.asq_last_status != I40E_AQ_RC_EINVAL) {
1828                         dev_info(&pf->pdev->dev,
1829                                  "add filter failed, err %d, aq_err %d\n",
1830                                  aq_ret, pf->hw.aq.asq_last_status);
1831                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1832                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1833                                       &vsi->state)) {
1834                                 promisc_forced_on = true;
1835                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1836                                         &vsi->state);
1837                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1838                         }
1839                 }
1840         }
1841
1842         /* check for changes in promiscuous modes */
1843         if (changed_flags & IFF_ALLMULTI) {
1844                 bool cur_multipromisc;
1845                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1846                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1847                                                                vsi->seid,
1848                                                                cur_multipromisc,
1849                                                                NULL);
1850                 if (aq_ret)
1851                         dev_info(&pf->pdev->dev,
1852                                  "set multi promisc failed, err %d, aq_err %d\n",
1853                                  aq_ret, pf->hw.aq.asq_last_status);
1854         }
1855         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1856                 bool cur_promisc;
1857                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1858                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1859                                         &vsi->state));
1860                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1861                                                              vsi->seid,
1862                                                              cur_promisc, NULL);
1863                 if (aq_ret)
1864                         dev_info(&pf->pdev->dev,
1865                                  "set uni promisc failed, err %d, aq_err %d\n",
1866                                  aq_ret, pf->hw.aq.asq_last_status);
1867                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1868                                                    vsi->seid,
1869                                                    cur_promisc, NULL);
1870                 if (aq_ret)
1871                         dev_info(&pf->pdev->dev,
1872                                  "set brdcast promisc failed, err %d, aq_err %d\n",
1873                                  aq_ret, pf->hw.aq.asq_last_status);
1874         }
1875
1876         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1877         return 0;
1878 }
1879
1880 /**
1881  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1882  * @pf: board private structure
1883  **/
1884 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1885 {
1886         int v;
1887
1888         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1889                 return;
1890         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1891
1892         for (v = 0; v < pf->num_alloc_vsi; v++) {
1893                 if (pf->vsi[v] &&
1894                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1895                         i40e_sync_vsi_filters(pf->vsi[v]);
1896         }
1897 }
1898
1899 /**
1900  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1901  * @netdev: network interface device structure
1902  * @new_mtu: new value for maximum frame size
1903  *
1904  * Returns 0 on success, negative on failure
1905  **/
1906 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1907 {
1908         struct i40e_netdev_priv *np = netdev_priv(netdev);
1909         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1910         struct i40e_vsi *vsi = np->vsi;
1911
1912         /* MTU < 68 is an error and causes problems on some kernels */
1913         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1914                 return -EINVAL;
1915
1916         netdev_info(netdev, "changing MTU from %d to %d\n",
1917                     netdev->mtu, new_mtu);
1918         netdev->mtu = new_mtu;
1919         if (netif_running(netdev))
1920                 i40e_vsi_reinit_locked(vsi);
1921
1922         return 0;
1923 }
1924
1925 /**
1926  * i40e_ioctl - Access the hwtstamp interface
1927  * @netdev: network interface device structure
1928  * @ifr: interface request data
1929  * @cmd: ioctl command
1930  **/
1931 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1932 {
1933         struct i40e_netdev_priv *np = netdev_priv(netdev);
1934         struct i40e_pf *pf = np->vsi->back;
1935
1936         switch (cmd) {
1937         case SIOCGHWTSTAMP:
1938                 return i40e_ptp_get_ts_config(pf, ifr);
1939         case SIOCSHWTSTAMP:
1940                 return i40e_ptp_set_ts_config(pf, ifr);
1941         default:
1942                 return -EOPNOTSUPP;
1943         }
1944 }
1945
1946 /**
1947  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1948  * @vsi: the vsi being adjusted
1949  **/
1950 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1951 {
1952         struct i40e_vsi_context ctxt;
1953         i40e_status ret;
1954
1955         if ((vsi->info.valid_sections &
1956              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1957             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1958                 return;  /* already enabled */
1959
1960         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1961         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1962                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1963
1964         ctxt.seid = vsi->seid;
1965         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1966         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1967         if (ret) {
1968                 dev_info(&vsi->back->pdev->dev,
1969                          "%s: update vsi failed, aq_err=%d\n",
1970                          __func__, vsi->back->hw.aq.asq_last_status);
1971         }
1972 }
1973
1974 /**
1975  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1976  * @vsi: the vsi being adjusted
1977  **/
1978 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1979 {
1980         struct i40e_vsi_context ctxt;
1981         i40e_status ret;
1982
1983         if ((vsi->info.valid_sections &
1984              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1985             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1986              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1987                 return;  /* already disabled */
1988
1989         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1990         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1991                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1992
1993         ctxt.seid = vsi->seid;
1994         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1995         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1996         if (ret) {
1997                 dev_info(&vsi->back->pdev->dev,
1998                          "%s: update vsi failed, aq_err=%d\n",
1999                          __func__, vsi->back->hw.aq.asq_last_status);
2000         }
2001 }
2002
2003 /**
2004  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2005  * @netdev: network interface to be adjusted
2006  * @features: netdev features to test if VLAN offload is enabled or not
2007  **/
2008 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2009 {
2010         struct i40e_netdev_priv *np = netdev_priv(netdev);
2011         struct i40e_vsi *vsi = np->vsi;
2012
2013         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2014                 i40e_vlan_stripping_enable(vsi);
2015         else
2016                 i40e_vlan_stripping_disable(vsi);
2017 }
2018
2019 /**
2020  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2021  * @vsi: the vsi being configured
2022  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2023  **/
2024 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2025 {
2026         struct i40e_mac_filter *f, *add_f;
2027         bool is_netdev, is_vf;
2028
2029         is_vf = (vsi->type == I40E_VSI_SRIOV);
2030         is_netdev = !!(vsi->netdev);
2031
2032         if (is_netdev) {
2033                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2034                                         is_vf, is_netdev);
2035                 if (!add_f) {
2036                         dev_info(&vsi->back->pdev->dev,
2037                                  "Could not add vlan filter %d for %pM\n",
2038                                  vid, vsi->netdev->dev_addr);
2039                         return -ENOMEM;
2040                 }
2041         }
2042
2043         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2044                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2045                 if (!add_f) {
2046                         dev_info(&vsi->back->pdev->dev,
2047                                  "Could not add vlan filter %d for %pM\n",
2048                                  vid, f->macaddr);
2049                         return -ENOMEM;
2050                 }
2051         }
2052
2053         /* Now if we add a vlan tag, make sure to check if it is the first
2054          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2055          * with 0, so we now accept untagged and specified tagged traffic
2056          * (and not any taged and untagged)
2057          */
2058         if (vid > 0) {
2059                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2060                                                   I40E_VLAN_ANY,
2061                                                   is_vf, is_netdev)) {
2062                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2063                                         I40E_VLAN_ANY, is_vf, is_netdev);
2064                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2065                                                 is_vf, is_netdev);
2066                         if (!add_f) {
2067                                 dev_info(&vsi->back->pdev->dev,
2068                                          "Could not add filter 0 for %pM\n",
2069                                          vsi->netdev->dev_addr);
2070                                 return -ENOMEM;
2071                         }
2072                 }
2073         }
2074
2075         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2076         if (vid > 0 && !vsi->info.pvid) {
2077                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2078                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2079                                              is_vf, is_netdev)) {
2080                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2081                                                 is_vf, is_netdev);
2082                                 add_f = i40e_add_filter(vsi, f->macaddr,
2083                                                         0, is_vf, is_netdev);
2084                                 if (!add_f) {
2085                                         dev_info(&vsi->back->pdev->dev,
2086                                                  "Could not add filter 0 for %pM\n",
2087                                                  f->macaddr);
2088                                         return -ENOMEM;
2089                                 }
2090                         }
2091                 }
2092         }
2093
2094         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2095             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2096                 return 0;
2097
2098         return i40e_sync_vsi_filters(vsi);
2099 }
2100
2101 /**
2102  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2103  * @vsi: the vsi being configured
2104  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2105  *
2106  * Return: 0 on success or negative otherwise
2107  **/
2108 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2109 {
2110         struct net_device *netdev = vsi->netdev;
2111         struct i40e_mac_filter *f, *add_f;
2112         bool is_vf, is_netdev;
2113         int filter_count = 0;
2114
2115         is_vf = (vsi->type == I40E_VSI_SRIOV);
2116         is_netdev = !!(netdev);
2117
2118         if (is_netdev)
2119                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2120
2121         list_for_each_entry(f, &vsi->mac_filter_list, list)
2122                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2123
2124         /* go through all the filters for this VSI and if there is only
2125          * vid == 0 it means there are no other filters, so vid 0 must
2126          * be replaced with -1. This signifies that we should from now
2127          * on accept any traffic (with any tag present, or untagged)
2128          */
2129         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2130                 if (is_netdev) {
2131                         if (f->vlan &&
2132                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2133                                 filter_count++;
2134                 }
2135
2136                 if (f->vlan)
2137                         filter_count++;
2138         }
2139
2140         if (!filter_count && is_netdev) {
2141                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2142                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2143                                     is_vf, is_netdev);
2144                 if (!f) {
2145                         dev_info(&vsi->back->pdev->dev,
2146                                  "Could not add filter %d for %pM\n",
2147                                  I40E_VLAN_ANY, netdev->dev_addr);
2148                         return -ENOMEM;
2149                 }
2150         }
2151
2152         if (!filter_count) {
2153                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2154                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2155                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2156                                             is_vf, is_netdev);
2157                         if (!add_f) {
2158                                 dev_info(&vsi->back->pdev->dev,
2159                                          "Could not add filter %d for %pM\n",
2160                                          I40E_VLAN_ANY, f->macaddr);
2161                                 return -ENOMEM;
2162                         }
2163                 }
2164         }
2165
2166         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2167             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2168                 return 0;
2169
2170         return i40e_sync_vsi_filters(vsi);
2171 }
2172
2173 /**
2174  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2175  * @netdev: network interface to be adjusted
2176  * @vid: vlan id to be added
2177  *
2178  * net_device_ops implementation for adding vlan ids
2179  **/
2180 #ifdef I40E_FCOE
2181 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2182                          __always_unused __be16 proto, u16 vid)
2183 #else
2184 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2185                                 __always_unused __be16 proto, u16 vid)
2186 #endif
2187 {
2188         struct i40e_netdev_priv *np = netdev_priv(netdev);
2189         struct i40e_vsi *vsi = np->vsi;
2190         int ret = 0;
2191
2192         if (vid > 4095)
2193                 return -EINVAL;
2194
2195         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2196
2197         /* If the network stack called us with vid = 0 then
2198          * it is asking to receive priority tagged packets with
2199          * vlan id 0.  Our HW receives them by default when configured
2200          * to receive untagged packets so there is no need to add an
2201          * extra filter for vlan 0 tagged packets.
2202          */
2203         if (vid)
2204                 ret = i40e_vsi_add_vlan(vsi, vid);
2205
2206         if (!ret && (vid < VLAN_N_VID))
2207                 set_bit(vid, vsi->active_vlans);
2208
2209         return ret;
2210 }
2211
2212 /**
2213  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2214  * @netdev: network interface to be adjusted
2215  * @vid: vlan id to be removed
2216  *
2217  * net_device_ops implementation for removing vlan ids
2218  **/
2219 #ifdef I40E_FCOE
2220 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2221                           __always_unused __be16 proto, u16 vid)
2222 #else
2223 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2224                                  __always_unused __be16 proto, u16 vid)
2225 #endif
2226 {
2227         struct i40e_netdev_priv *np = netdev_priv(netdev);
2228         struct i40e_vsi *vsi = np->vsi;
2229
2230         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2231
2232         /* return code is ignored as there is nothing a user
2233          * can do about failure to remove and a log message was
2234          * already printed from the other function
2235          */
2236         i40e_vsi_kill_vlan(vsi, vid);
2237
2238         clear_bit(vid, vsi->active_vlans);
2239
2240         return 0;
2241 }
2242
2243 /**
2244  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2245  * @vsi: the vsi being brought back up
2246  **/
2247 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2248 {
2249         u16 vid;
2250
2251         if (!vsi->netdev)
2252                 return;
2253
2254         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2255
2256         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2257                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2258                                      vid);
2259 }
2260
2261 /**
2262  * i40e_vsi_add_pvid - Add pvid for the VSI
2263  * @vsi: the vsi being adjusted
2264  * @vid: the vlan id to set as a PVID
2265  **/
2266 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2267 {
2268         struct i40e_vsi_context ctxt;
2269         i40e_status aq_ret;
2270
2271         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2272         vsi->info.pvid = cpu_to_le16(vid);
2273         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2274                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2275                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2276
2277         ctxt.seid = vsi->seid;
2278         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2279         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2280         if (aq_ret) {
2281                 dev_info(&vsi->back->pdev->dev,
2282                          "%s: update vsi failed, aq_err=%d\n",
2283                          __func__, vsi->back->hw.aq.asq_last_status);
2284                 return -ENOENT;
2285         }
2286
2287         return 0;
2288 }
2289
2290 /**
2291  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2292  * @vsi: the vsi being adjusted
2293  *
2294  * Just use the vlan_rx_register() service to put it back to normal
2295  **/
2296 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2297 {
2298         i40e_vlan_stripping_disable(vsi);
2299
2300         vsi->info.pvid = 0;
2301 }
2302
2303 /**
2304  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2305  * @vsi: ptr to the VSI
2306  *
2307  * If this function returns with an error, then it's possible one or
2308  * more of the rings is populated (while the rest are not).  It is the
2309  * callers duty to clean those orphaned rings.
2310  *
2311  * Return 0 on success, negative on failure
2312  **/
2313 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2314 {
2315         int i, err = 0;
2316
2317         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2318                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2319
2320         return err;
2321 }
2322
2323 /**
2324  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2325  * @vsi: ptr to the VSI
2326  *
2327  * Free VSI's transmit software resources
2328  **/
2329 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2330 {
2331         int i;
2332
2333         if (!vsi->tx_rings)
2334                 return;
2335
2336         for (i = 0; i < vsi->num_queue_pairs; i++)
2337                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2338                         i40e_free_tx_resources(vsi->tx_rings[i]);
2339 }
2340
2341 /**
2342  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2343  * @vsi: ptr to the VSI
2344  *
2345  * If this function returns with an error, then it's possible one or
2346  * more of the rings is populated (while the rest are not).  It is the
2347  * callers duty to clean those orphaned rings.
2348  *
2349  * Return 0 on success, negative on failure
2350  **/
2351 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2352 {
2353         int i, err = 0;
2354
2355         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2356                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2357 #ifdef I40E_FCOE
2358         i40e_fcoe_setup_ddp_resources(vsi);
2359 #endif
2360         return err;
2361 }
2362
2363 /**
2364  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2365  * @vsi: ptr to the VSI
2366  *
2367  * Free all receive software resources
2368  **/
2369 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2370 {
2371         int i;
2372
2373         if (!vsi->rx_rings)
2374                 return;
2375
2376         for (i = 0; i < vsi->num_queue_pairs; i++)
2377                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2378                         i40e_free_rx_resources(vsi->rx_rings[i]);
2379 #ifdef I40E_FCOE
2380         i40e_fcoe_free_ddp_resources(vsi);
2381 #endif
2382 }
2383
2384 /**
2385  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2386  * @ring: The Tx ring to configure
2387  *
2388  * This enables/disables XPS for a given Tx descriptor ring
2389  * based on the TCs enabled for the VSI that ring belongs to.
2390  **/
2391 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2392 {
2393         struct i40e_vsi *vsi = ring->vsi;
2394         cpumask_var_t mask;
2395
2396         if (ring->q_vector && ring->netdev) {
2397                 /* Single TC mode enable XPS */
2398                 if (vsi->tc_config.numtc <= 1 &&
2399                     !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state)) {
2400                         netif_set_xps_queue(ring->netdev,
2401                                             &ring->q_vector->affinity_mask,
2402                                             ring->queue_index);
2403                 } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2404                         /* Disable XPS to allow selection based on TC */
2405                         bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2406                         netif_set_xps_queue(ring->netdev, mask,
2407                                             ring->queue_index);
2408                         free_cpumask_var(mask);
2409                 }
2410         }
2411 }
2412
2413 /**
2414  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2415  * @ring: The Tx ring to configure
2416  *
2417  * Configure the Tx descriptor ring in the HMC context.
2418  **/
2419 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2420 {
2421         struct i40e_vsi *vsi = ring->vsi;
2422         u16 pf_q = vsi->base_queue + ring->queue_index;
2423         struct i40e_hw *hw = &vsi->back->hw;
2424         struct i40e_hmc_obj_txq tx_ctx;
2425         i40e_status err = 0;
2426         u32 qtx_ctl = 0;
2427
2428         /* some ATR related tx ring init */
2429         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2430                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2431                 ring->atr_count = 0;
2432         } else {
2433                 ring->atr_sample_rate = 0;
2434         }
2435
2436         /* configure XPS */
2437         i40e_config_xps_tx_ring(ring);
2438
2439         /* clear the context structure first */
2440         memset(&tx_ctx, 0, sizeof(tx_ctx));
2441
2442         tx_ctx.new_context = 1;
2443         tx_ctx.base = (ring->dma / 128);
2444         tx_ctx.qlen = ring->count;
2445         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2446                                                I40E_FLAG_FD_ATR_ENABLED));
2447 #ifdef I40E_FCOE
2448         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2449 #endif
2450         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2451         /* FDIR VSI tx ring can still use RS bit and writebacks */
2452         if (vsi->type != I40E_VSI_FDIR)
2453                 tx_ctx.head_wb_ena = 1;
2454         tx_ctx.head_wb_addr = ring->dma +
2455                               (ring->count * sizeof(struct i40e_tx_desc));
2456
2457         /* As part of VSI creation/update, FW allocates certain
2458          * Tx arbitration queue sets for each TC enabled for
2459          * the VSI. The FW returns the handles to these queue
2460          * sets as part of the response buffer to Add VSI,
2461          * Update VSI, etc. AQ commands. It is expected that
2462          * these queue set handles be associated with the Tx
2463          * queues by the driver as part of the TX queue context
2464          * initialization. This has to be done regardless of
2465          * DCB as by default everything is mapped to TC0.
2466          */
2467         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2468         tx_ctx.rdylist_act = 0;
2469
2470         /* clear the context in the HMC */
2471         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2472         if (err) {
2473                 dev_info(&vsi->back->pdev->dev,
2474                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2475                          ring->queue_index, pf_q, err);
2476                 return -ENOMEM;
2477         }
2478
2479         /* set the context in the HMC */
2480         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2481         if (err) {
2482                 dev_info(&vsi->back->pdev->dev,
2483                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2484                          ring->queue_index, pf_q, err);
2485                 return -ENOMEM;
2486         }
2487
2488         /* Now associate this queue with this PCI function */
2489         if (vsi->type == I40E_VSI_VMDQ2) {
2490                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2491                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2492                            I40E_QTX_CTL_VFVM_INDX_MASK;
2493         } else {
2494                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2495         }
2496
2497         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2498                     I40E_QTX_CTL_PF_INDX_MASK);
2499         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2500         i40e_flush(hw);
2501
2502         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2503
2504         /* cache tail off for easier writes later */
2505         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2506
2507         return 0;
2508 }
2509
2510 /**
2511  * i40e_configure_rx_ring - Configure a receive ring context
2512  * @ring: The Rx ring to configure
2513  *
2514  * Configure the Rx descriptor ring in the HMC context.
2515  **/
2516 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2517 {
2518         struct i40e_vsi *vsi = ring->vsi;
2519         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2520         u16 pf_q = vsi->base_queue + ring->queue_index;
2521         struct i40e_hw *hw = &vsi->back->hw;
2522         struct i40e_hmc_obj_rxq rx_ctx;
2523         i40e_status err = 0;
2524
2525         ring->state = 0;
2526
2527         /* clear the context structure first */
2528         memset(&rx_ctx, 0, sizeof(rx_ctx));
2529
2530         ring->rx_buf_len = vsi->rx_buf_len;
2531         ring->rx_hdr_len = vsi->rx_hdr_len;
2532
2533         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2534         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2535
2536         rx_ctx.base = (ring->dma / 128);
2537         rx_ctx.qlen = ring->count;
2538
2539         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2540                 set_ring_16byte_desc_enabled(ring);
2541                 rx_ctx.dsize = 0;
2542         } else {
2543                 rx_ctx.dsize = 1;
2544         }
2545
2546         rx_ctx.dtype = vsi->dtype;
2547         if (vsi->dtype) {
2548                 set_ring_ps_enabled(ring);
2549                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2550                                   I40E_RX_SPLIT_IP      |
2551                                   I40E_RX_SPLIT_TCP_UDP |
2552                                   I40E_RX_SPLIT_SCTP;
2553         } else {
2554                 rx_ctx.hsplit_0 = 0;
2555         }
2556
2557         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2558                                   (chain_len * ring->rx_buf_len));
2559         if (hw->revision_id == 0)
2560                 rx_ctx.lrxqthresh = 0;
2561         else
2562                 rx_ctx.lrxqthresh = 2;
2563         rx_ctx.crcstrip = 1;
2564         rx_ctx.l2tsel = 1;
2565         rx_ctx.showiv = 1;
2566 #ifdef I40E_FCOE
2567         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2568 #endif
2569         /* set the prefena field to 1 because the manual says to */
2570         rx_ctx.prefena = 1;
2571
2572         /* clear the context in the HMC */
2573         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2574         if (err) {
2575                 dev_info(&vsi->back->pdev->dev,
2576                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2577                          ring->queue_index, pf_q, err);
2578                 return -ENOMEM;
2579         }
2580
2581         /* set the context in the HMC */
2582         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2583         if (err) {
2584                 dev_info(&vsi->back->pdev->dev,
2585                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2586                          ring->queue_index, pf_q, err);
2587                 return -ENOMEM;
2588         }
2589
2590         /* cache tail for quicker writes, and clear the reg before use */
2591         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2592         writel(0, ring->tail);
2593
2594         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2595
2596         return 0;
2597 }
2598
2599 /**
2600  * i40e_vsi_configure_tx - Configure the VSI for Tx
2601  * @vsi: VSI structure describing this set of rings and resources
2602  *
2603  * Configure the Tx VSI for operation.
2604  **/
2605 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2606 {
2607         int err = 0;
2608         u16 i;
2609
2610         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2611                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2612
2613         return err;
2614 }
2615
2616 /**
2617  * i40e_vsi_configure_rx - Configure the VSI for Rx
2618  * @vsi: the VSI being configured
2619  *
2620  * Configure the Rx VSI for operation.
2621  **/
2622 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2623 {
2624         int err = 0;
2625         u16 i;
2626
2627         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2628                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2629                                + ETH_FCS_LEN + VLAN_HLEN;
2630         else
2631                 vsi->max_frame = I40E_RXBUFFER_2048;
2632
2633         /* figure out correct receive buffer length */
2634         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2635                                     I40E_FLAG_RX_PS_ENABLED)) {
2636         case I40E_FLAG_RX_1BUF_ENABLED:
2637                 vsi->rx_hdr_len = 0;
2638                 vsi->rx_buf_len = vsi->max_frame;
2639                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2640                 break;
2641         case I40E_FLAG_RX_PS_ENABLED:
2642                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2643                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2644                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2645                 break;
2646         default:
2647                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2648                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2649                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2650                 break;
2651         }
2652
2653 #ifdef I40E_FCOE
2654         /* setup rx buffer for FCoE */
2655         if ((vsi->type == I40E_VSI_FCOE) &&
2656             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2657                 vsi->rx_hdr_len = 0;
2658                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2659                 vsi->max_frame = I40E_RXBUFFER_3072;
2660                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2661         }
2662
2663 #endif /* I40E_FCOE */
2664         /* round up for the chip's needs */
2665         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2666                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2667         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2668                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2669
2670         /* set up individual rings */
2671         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2672                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2673
2674         return err;
2675 }
2676
2677 /**
2678  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2679  * @vsi: ptr to the VSI
2680  **/
2681 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2682 {
2683         struct i40e_ring *tx_ring, *rx_ring;
2684         u16 qoffset, qcount;
2685         int i, n;
2686
2687         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2688                 return;
2689
2690         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2691                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2692                         continue;
2693
2694                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2695                 qcount = vsi->tc_config.tc_info[n].qcount;
2696                 for (i = qoffset; i < (qoffset + qcount); i++) {
2697                         rx_ring = vsi->rx_rings[i];
2698                         tx_ring = vsi->tx_rings[i];
2699                         rx_ring->dcb_tc = n;
2700                         tx_ring->dcb_tc = n;
2701                 }
2702         }
2703 }
2704
2705 /**
2706  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2707  * @vsi: ptr to the VSI
2708  **/
2709 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2710 {
2711         if (vsi->netdev)
2712                 i40e_set_rx_mode(vsi->netdev);
2713 }
2714
2715 /**
2716  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2717  * @vsi: Pointer to the targeted VSI
2718  *
2719  * This function replays the hlist on the hw where all the SB Flow Director
2720  * filters were saved.
2721  **/
2722 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2723 {
2724         struct i40e_fdir_filter *filter;
2725         struct i40e_pf *pf = vsi->back;
2726         struct hlist_node *node;
2727
2728         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2729                 return;
2730
2731         hlist_for_each_entry_safe(filter, node,
2732                                   &pf->fdir_filter_list, fdir_node) {
2733                 i40e_add_del_fdir(vsi, filter, true);
2734         }
2735 }
2736
2737 /**
2738  * i40e_vsi_configure - Set up the VSI for action
2739  * @vsi: the VSI being configured
2740  **/
2741 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2742 {
2743         int err;
2744
2745         i40e_set_vsi_rx_mode(vsi);
2746         i40e_restore_vlan(vsi);
2747         i40e_vsi_config_dcb_rings(vsi);
2748         err = i40e_vsi_configure_tx(vsi);
2749         if (!err)
2750                 err = i40e_vsi_configure_rx(vsi);
2751
2752         return err;
2753 }
2754
2755 /**
2756  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2757  * @vsi: the VSI being configured
2758  **/
2759 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2760 {
2761         struct i40e_pf *pf = vsi->back;
2762         struct i40e_q_vector *q_vector;
2763         struct i40e_hw *hw = &pf->hw;
2764         u16 vector;
2765         int i, q;
2766         u32 val;
2767         u32 qp;
2768
2769         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2770          * and PFINT_LNKLSTn registers, e.g.:
2771          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2772          */
2773         qp = vsi->base_queue;
2774         vector = vsi->base_vector;
2775         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2776                 q_vector = vsi->q_vectors[i];
2777                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2778                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2779                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2780                      q_vector->rx.itr);
2781                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2782                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2783                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2784                      q_vector->tx.itr);
2785
2786                 /* Linked list for the queuepairs assigned to this vector */
2787                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2788                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2789                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2790                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2791                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2792                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2793                               (I40E_QUEUE_TYPE_TX
2794                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2795
2796                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2797
2798                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2799                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2800                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2801                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2802                               (I40E_QUEUE_TYPE_RX
2803                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2804
2805                         /* Terminate the linked list */
2806                         if (q == (q_vector->num_ringpairs - 1))
2807                                 val |= (I40E_QUEUE_END_OF_LIST
2808                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2809
2810                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2811                         qp++;
2812                 }
2813         }
2814
2815         i40e_flush(hw);
2816 }
2817
2818 /**
2819  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2820  * @hw: ptr to the hardware info
2821  **/
2822 static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
2823 {
2824         u32 val;
2825
2826         /* clear things first */
2827         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2828         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2829
2830         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2831               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2832               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2833               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2834               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2835               I40E_PFINT_ICR0_ENA_TIMESYNC_MASK      |
2836               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2837               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2838               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2839
2840         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2841
2842         /* SW_ITR_IDX = 0, but don't change INTENA */
2843         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2844                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2845
2846         /* OTHER_ITR_IDX = 0 */
2847         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2848 }
2849
2850 /**
2851  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2852  * @vsi: the VSI being configured
2853  **/
2854 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2855 {
2856         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2857         struct i40e_pf *pf = vsi->back;
2858         struct i40e_hw *hw = &pf->hw;
2859         u32 val;
2860
2861         /* set the ITR configuration */
2862         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2863         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2864         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2865         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2866         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2867         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2868
2869         i40e_enable_misc_int_causes(hw);
2870
2871         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2872         wr32(hw, I40E_PFINT_LNKLST0, 0);
2873
2874         /* Associate the queue pair to the vector and enable the queue int */
2875         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2876               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2877               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2878
2879         wr32(hw, I40E_QINT_RQCTL(0), val);
2880
2881         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2882               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2883               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2884
2885         wr32(hw, I40E_QINT_TQCTL(0), val);
2886         i40e_flush(hw);
2887 }
2888
2889 /**
2890  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2891  * @pf: board private structure
2892  **/
2893 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2894 {
2895         struct i40e_hw *hw = &pf->hw;
2896
2897         wr32(hw, I40E_PFINT_DYN_CTL0,
2898              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2899         i40e_flush(hw);
2900 }
2901
2902 /**
2903  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2904  * @pf: board private structure
2905  **/
2906 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2907 {
2908         struct i40e_hw *hw = &pf->hw;
2909         u32 val;
2910
2911         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2912               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2913               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2914
2915         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2916         i40e_flush(hw);
2917 }
2918
2919 /**
2920  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2921  * @vsi: pointer to a vsi
2922  * @vector: enable a particular Hw Interrupt vector
2923  **/
2924 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2925 {
2926         struct i40e_pf *pf = vsi->back;
2927         struct i40e_hw *hw = &pf->hw;
2928         u32 val;
2929
2930         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2931               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2932               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2933         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2934         /* skip the flush */
2935 }
2936
2937 /**
2938  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
2939  * @vsi: pointer to a vsi
2940  * @vector: enable a particular Hw Interrupt vector
2941  **/
2942 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
2943 {
2944         struct i40e_pf *pf = vsi->back;
2945         struct i40e_hw *hw = &pf->hw;
2946         u32 val;
2947
2948         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
2949         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2950         i40e_flush(hw);
2951 }
2952
2953 /**
2954  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2955  * @irq: interrupt number
2956  * @data: pointer to a q_vector
2957  **/
2958 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2959 {
2960         struct i40e_q_vector *q_vector = data;
2961
2962         if (!q_vector->tx.ring && !q_vector->rx.ring)
2963                 return IRQ_HANDLED;
2964
2965         napi_schedule(&q_vector->napi);
2966
2967         return IRQ_HANDLED;
2968 }
2969
2970 /**
2971  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2972  * @vsi: the VSI being configured
2973  * @basename: name for the vector
2974  *
2975  * Allocates MSI-X vectors and requests interrupts from the kernel.
2976  **/
2977 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2978 {
2979         int q_vectors = vsi->num_q_vectors;
2980         struct i40e_pf *pf = vsi->back;
2981         int base = vsi->base_vector;
2982         int rx_int_idx = 0;
2983         int tx_int_idx = 0;
2984         int vector, err;
2985
2986         for (vector = 0; vector < q_vectors; vector++) {
2987                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2988
2989                 if (q_vector->tx.ring && q_vector->rx.ring) {
2990                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2991                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2992                         tx_int_idx++;
2993                 } else if (q_vector->rx.ring) {
2994                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2995                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
2996                 } else if (q_vector->tx.ring) {
2997                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2998                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
2999                 } else {
3000                         /* skip this unused q_vector */
3001                         continue;
3002                 }
3003                 err = request_irq(pf->msix_entries[base + vector].vector,
3004                                   vsi->irq_handler,
3005                                   0,
3006                                   q_vector->name,
3007                                   q_vector);
3008                 if (err) {
3009                         dev_info(&pf->pdev->dev,
3010                                  "%s: request_irq failed, error: %d\n",
3011                                  __func__, err);
3012                         goto free_queue_irqs;
3013                 }
3014                 /* assign the mask for this irq */
3015                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3016                                       &q_vector->affinity_mask);
3017         }
3018
3019         vsi->irqs_ready = true;
3020         return 0;
3021
3022 free_queue_irqs:
3023         while (vector) {
3024                 vector--;
3025                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3026                                       NULL);
3027                 free_irq(pf->msix_entries[base + vector].vector,
3028                          &(vsi->q_vectors[vector]));
3029         }
3030         return err;
3031 }
3032
3033 /**
3034  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3035  * @vsi: the VSI being un-configured
3036  **/
3037 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3038 {
3039         struct i40e_pf *pf = vsi->back;
3040         struct i40e_hw *hw = &pf->hw;
3041         int base = vsi->base_vector;
3042         int i;
3043
3044         for (i = 0; i < vsi->num_queue_pairs; i++) {
3045                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3046                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3047         }
3048
3049         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3050                 for (i = vsi->base_vector;
3051                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3052                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3053
3054                 i40e_flush(hw);
3055                 for (i = 0; i < vsi->num_q_vectors; i++)
3056                         synchronize_irq(pf->msix_entries[i + base].vector);
3057         } else {
3058                 /* Legacy and MSI mode - this stops all interrupt handling */
3059                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3060                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3061                 i40e_flush(hw);
3062                 synchronize_irq(pf->pdev->irq);
3063         }
3064 }
3065
3066 /**
3067  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3068  * @vsi: the VSI being configured
3069  **/
3070 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3071 {
3072         struct i40e_pf *pf = vsi->back;
3073         int i;
3074
3075         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3076                 for (i = vsi->base_vector;
3077                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3078                         i40e_irq_dynamic_enable(vsi, i);
3079         } else {
3080                 i40e_irq_dynamic_enable_icr0(pf);
3081         }
3082
3083         i40e_flush(&pf->hw);
3084         return 0;
3085 }
3086
3087 /**
3088  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3089  * @pf: board private structure
3090  **/
3091 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3092 {
3093         /* Disable ICR 0 */
3094         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3095         i40e_flush(&pf->hw);
3096 }
3097
3098 /**
3099  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3100  * @irq: interrupt number
3101  * @data: pointer to a q_vector
3102  *
3103  * This is the handler used for all MSI/Legacy interrupts, and deals
3104  * with both queue and non-queue interrupts.  This is also used in
3105  * MSIX mode to handle the non-queue interrupts.
3106  **/
3107 static irqreturn_t i40e_intr(int irq, void *data)
3108 {
3109         struct i40e_pf *pf = (struct i40e_pf *)data;
3110         struct i40e_hw *hw = &pf->hw;
3111         irqreturn_t ret = IRQ_NONE;
3112         u32 icr0, icr0_remaining;
3113         u32 val, ena_mask;
3114
3115         icr0 = rd32(hw, I40E_PFINT_ICR0);
3116         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3117
3118         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3119         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3120                 goto enable_intr;
3121
3122         /* if interrupt but no bits showing, must be SWINT */
3123         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3124             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3125                 pf->sw_int_count++;
3126
3127         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3128         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3129
3130                 /* temporarily disable queue cause for NAPI processing */
3131                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3132                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3133                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3134
3135                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3136                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3137                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3138
3139                 if (!test_bit(__I40E_DOWN, &pf->state))
3140                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3141         }
3142
3143         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3144                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3145                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3146         }
3147
3148         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3149                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3150                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3151         }
3152
3153         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3154                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3155                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3156         }
3157
3158         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3159                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3160                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3161                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3162                 val = rd32(hw, I40E_GLGEN_RSTAT);
3163                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3164                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3165                 if (val == I40E_RESET_CORER) {
3166                         pf->corer_count++;
3167                 } else if (val == I40E_RESET_GLOBR) {
3168                         pf->globr_count++;
3169                 } else if (val == I40E_RESET_EMPR) {
3170                         pf->empr_count++;
3171                         set_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
3172                 }
3173         }
3174
3175         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3176                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3177                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3178         }
3179
3180         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3181                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3182
3183                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3184                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3185                         i40e_ptp_tx_hwtstamp(pf);
3186                 }
3187         }
3188
3189         /* If a critical error is pending we have no choice but to reset the
3190          * device.
3191          * Report and mask out any remaining unexpected interrupts.
3192          */
3193         icr0_remaining = icr0 & ena_mask;
3194         if (icr0_remaining) {
3195                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3196                          icr0_remaining);
3197                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3198                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3199                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3200                         dev_info(&pf->pdev->dev, "device will be reset\n");
3201                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3202                         i40e_service_event_schedule(pf);
3203                 }
3204                 ena_mask &= ~icr0_remaining;
3205         }
3206         ret = IRQ_HANDLED;
3207
3208 enable_intr:
3209         /* re-enable interrupt causes */
3210         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3211         if (!test_bit(__I40E_DOWN, &pf->state)) {
3212                 i40e_service_event_schedule(pf);
3213                 i40e_irq_dynamic_enable_icr0(pf);
3214         }
3215
3216         return ret;
3217 }
3218
3219 /**
3220  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3221  * @tx_ring:  tx ring to clean
3222  * @budget:   how many cleans we're allowed
3223  *
3224  * Returns true if there's any budget left (e.g. the clean is finished)
3225  **/
3226 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3227 {
3228         struct i40e_vsi *vsi = tx_ring->vsi;
3229         u16 i = tx_ring->next_to_clean;
3230         struct i40e_tx_buffer *tx_buf;
3231         struct i40e_tx_desc *tx_desc;
3232
3233         tx_buf = &tx_ring->tx_bi[i];
3234         tx_desc = I40E_TX_DESC(tx_ring, i);
3235         i -= tx_ring->count;
3236
3237         do {
3238                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3239
3240                 /* if next_to_watch is not set then there is no work pending */
3241                 if (!eop_desc)
3242                         break;
3243
3244                 /* prevent any other reads prior to eop_desc */
3245                 read_barrier_depends();
3246
3247                 /* if the descriptor isn't done, no work yet to do */
3248                 if (!(eop_desc->cmd_type_offset_bsz &
3249                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3250                         break;
3251
3252                 /* clear next_to_watch to prevent false hangs */
3253                 tx_buf->next_to_watch = NULL;
3254
3255                 tx_desc->buffer_addr = 0;
3256                 tx_desc->cmd_type_offset_bsz = 0;
3257                 /* move past filter desc */
3258                 tx_buf++;
3259                 tx_desc++;
3260                 i++;
3261                 if (unlikely(!i)) {
3262                         i -= tx_ring->count;
3263                         tx_buf = tx_ring->tx_bi;
3264                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3265                 }
3266                 /* unmap skb header data */
3267                 dma_unmap_single(tx_ring->dev,
3268                                  dma_unmap_addr(tx_buf, dma),
3269                                  dma_unmap_len(tx_buf, len),
3270                                  DMA_TO_DEVICE);
3271                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3272                         kfree(tx_buf->raw_buf);
3273
3274                 tx_buf->raw_buf = NULL;
3275                 tx_buf->tx_flags = 0;
3276                 tx_buf->next_to_watch = NULL;
3277                 dma_unmap_len_set(tx_buf, len, 0);
3278                 tx_desc->buffer_addr = 0;
3279                 tx_desc->cmd_type_offset_bsz = 0;
3280
3281                 /* move us past the eop_desc for start of next FD desc */
3282                 tx_buf++;
3283                 tx_desc++;
3284                 i++;
3285                 if (unlikely(!i)) {
3286                         i -= tx_ring->count;
3287                         tx_buf = tx_ring->tx_bi;
3288                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3289                 }
3290
3291                 /* update budget accounting */
3292                 budget--;
3293         } while (likely(budget));
3294
3295         i += tx_ring->count;
3296         tx_ring->next_to_clean = i;
3297
3298         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3299                 i40e_irq_dynamic_enable(vsi,
3300                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3301         }
3302         return budget > 0;
3303 }
3304
3305 /**
3306  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3307  * @irq: interrupt number
3308  * @data: pointer to a q_vector
3309  **/
3310 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3311 {
3312         struct i40e_q_vector *q_vector = data;
3313         struct i40e_vsi *vsi;
3314
3315         if (!q_vector->tx.ring)
3316                 return IRQ_HANDLED;
3317
3318         vsi = q_vector->tx.ring->vsi;
3319         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3320
3321         return IRQ_HANDLED;
3322 }
3323
3324 /**
3325  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3326  * @vsi: the VSI being configured
3327  * @v_idx: vector index
3328  * @qp_idx: queue pair index
3329  **/
3330 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3331 {
3332         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3333         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3334         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3335
3336         tx_ring->q_vector = q_vector;
3337         tx_ring->next = q_vector->tx.ring;
3338         q_vector->tx.ring = tx_ring;
3339         q_vector->tx.count++;
3340
3341         rx_ring->q_vector = q_vector;
3342         rx_ring->next = q_vector->rx.ring;
3343         q_vector->rx.ring = rx_ring;
3344         q_vector->rx.count++;
3345 }
3346
3347 /**
3348  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3349  * @vsi: the VSI being configured
3350  *
3351  * This function maps descriptor rings to the queue-specific vectors
3352  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3353  * one vector per queue pair, but on a constrained vector budget, we
3354  * group the queue pairs as "efficiently" as possible.
3355  **/
3356 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3357 {
3358         int qp_remaining = vsi->num_queue_pairs;
3359         int q_vectors = vsi->num_q_vectors;
3360         int num_ringpairs;
3361         int v_start = 0;
3362         int qp_idx = 0;
3363
3364         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3365          * group them so there are multiple queues per vector.
3366          * It is also important to go through all the vectors available to be
3367          * sure that if we don't use all the vectors, that the remaining vectors
3368          * are cleared. This is especially important when decreasing the
3369          * number of queues in use.
3370          */
3371         for (; v_start < q_vectors; v_start++) {
3372                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3373
3374                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3375
3376                 q_vector->num_ringpairs = num_ringpairs;
3377
3378                 q_vector->rx.count = 0;
3379                 q_vector->tx.count = 0;
3380                 q_vector->rx.ring = NULL;
3381                 q_vector->tx.ring = NULL;
3382
3383                 while (num_ringpairs--) {
3384                         map_vector_to_qp(vsi, v_start, qp_idx);
3385                         qp_idx++;
3386                         qp_remaining--;
3387                 }
3388         }
3389 }
3390
3391 /**
3392  * i40e_vsi_request_irq - Request IRQ from the OS
3393  * @vsi: the VSI being configured
3394  * @basename: name for the vector
3395  **/
3396 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3397 {
3398         struct i40e_pf *pf = vsi->back;
3399         int err;
3400
3401         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3402                 err = i40e_vsi_request_irq_msix(vsi, basename);
3403         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3404                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3405                                   pf->misc_int_name, pf);
3406         else
3407                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3408                                   pf->misc_int_name, pf);
3409
3410         if (err)
3411                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3412
3413         return err;
3414 }
3415
3416 #ifdef CONFIG_NET_POLL_CONTROLLER
3417 /**
3418  * i40e_netpoll - A Polling 'interrupt'handler
3419  * @netdev: network interface device structure
3420  *
3421  * This is used by netconsole to send skbs without having to re-enable
3422  * interrupts.  It's not called while the normal interrupt routine is executing.
3423  **/
3424 #ifdef I40E_FCOE
3425 void i40e_netpoll(struct net_device *netdev)
3426 #else
3427 static void i40e_netpoll(struct net_device *netdev)
3428 #endif
3429 {
3430         struct i40e_netdev_priv *np = netdev_priv(netdev);
3431         struct i40e_vsi *vsi = np->vsi;
3432         struct i40e_pf *pf = vsi->back;
3433         int i;
3434
3435         /* if interface is down do nothing */
3436         if (test_bit(__I40E_DOWN, &vsi->state))
3437                 return;
3438
3439         pf->flags |= I40E_FLAG_IN_NETPOLL;
3440         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3441                 for (i = 0; i < vsi->num_q_vectors; i++)
3442                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3443         } else {
3444                 i40e_intr(pf->pdev->irq, netdev);
3445         }
3446         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3447 }
3448 #endif
3449
3450 /**
3451  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3452  * @pf: the PF being configured
3453  * @pf_q: the PF queue
3454  * @enable: enable or disable state of the queue
3455  *
3456  * This routine will wait for the given Tx queue of the PF to reach the
3457  * enabled or disabled state.
3458  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3459  * multiple retries; else will return 0 in case of success.
3460  **/
3461 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3462 {
3463         int i;
3464         u32 tx_reg;
3465
3466         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3467                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3468                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3469                         break;
3470
3471                 usleep_range(10, 20);
3472         }
3473         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3474                 return -ETIMEDOUT;
3475
3476         return 0;
3477 }
3478
3479 /**
3480  * i40e_vsi_control_tx - Start or stop a VSI's rings
3481  * @vsi: the VSI being configured
3482  * @enable: start or stop the rings
3483  **/
3484 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3485 {
3486         struct i40e_pf *pf = vsi->back;
3487         struct i40e_hw *hw = &pf->hw;
3488         int i, j, pf_q, ret = 0;
3489         u32 tx_reg;
3490
3491         pf_q = vsi->base_queue;
3492         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3493
3494                 /* warn the TX unit of coming changes */
3495                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3496                 if (!enable)
3497                         usleep_range(10, 20);
3498
3499                 for (j = 0; j < 50; j++) {
3500                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3501                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3502                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3503                                 break;
3504                         usleep_range(1000, 2000);
3505                 }
3506                 /* Skip if the queue is already in the requested state */
3507                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3508                         continue;
3509
3510                 /* turn on/off the queue */
3511                 if (enable) {
3512                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3513                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3514                 } else {
3515                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3516                 }
3517
3518                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3519                 /* No waiting for the Tx queue to disable */
3520                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3521                         continue;
3522
3523                 /* wait for the change to finish */
3524                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3525                 if (ret) {
3526                         dev_info(&pf->pdev->dev,
3527                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3528                                  __func__, vsi->seid, pf_q,
3529                                  (enable ? "en" : "dis"));
3530                         break;
3531                 }
3532         }
3533
3534         if (hw->revision_id == 0)
3535                 mdelay(50);
3536         return ret;
3537 }
3538
3539 /**
3540  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3541  * @pf: the PF being configured
3542  * @pf_q: the PF queue
3543  * @enable: enable or disable state of the queue
3544  *
3545  * This routine will wait for the given Rx queue of the PF to reach the
3546  * enabled or disabled state.
3547  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3548  * multiple retries; else will return 0 in case of success.
3549  **/
3550 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3551 {
3552         int i;
3553         u32 rx_reg;
3554
3555         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3556                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3557                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3558                         break;
3559
3560                 usleep_range(10, 20);
3561         }
3562         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3563                 return -ETIMEDOUT;
3564
3565         return 0;
3566 }
3567
3568 /**
3569  * i40e_vsi_control_rx - Start or stop a VSI's rings
3570  * @vsi: the VSI being configured
3571  * @enable: start or stop the rings
3572  **/
3573 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3574 {
3575         struct i40e_pf *pf = vsi->back;
3576         struct i40e_hw *hw = &pf->hw;
3577         int i, j, pf_q, ret = 0;
3578         u32 rx_reg;
3579
3580         pf_q = vsi->base_queue;
3581         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3582                 for (j = 0; j < 50; j++) {
3583                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3584                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3585                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3586                                 break;
3587                         usleep_range(1000, 2000);
3588                 }
3589
3590                 /* Skip if the queue is already in the requested state */
3591                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3592                         continue;
3593
3594                 /* turn on/off the queue */
3595                 if (enable)
3596                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3597                 else
3598                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3599                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3600
3601                 /* wait for the change to finish */
3602                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3603                 if (ret) {
3604                         dev_info(&pf->pdev->dev,
3605                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3606                                  __func__, vsi->seid, pf_q,
3607                                  (enable ? "en" : "dis"));
3608                         break;
3609                 }
3610         }
3611
3612         return ret;
3613 }
3614
3615 /**
3616  * i40e_vsi_control_rings - Start or stop a VSI's rings
3617  * @vsi: the VSI being configured
3618  * @enable: start or stop the rings
3619  **/
3620 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3621 {
3622         int ret = 0;
3623
3624         /* do rx first for enable and last for disable */
3625         if (request) {
3626                 ret = i40e_vsi_control_rx(vsi, request);
3627                 if (ret)
3628                         return ret;
3629                 ret = i40e_vsi_control_tx(vsi, request);
3630         } else {
3631                 /* Ignore return value, we need to shutdown whatever we can */
3632                 i40e_vsi_control_tx(vsi, request);
3633                 i40e_vsi_control_rx(vsi, request);
3634         }
3635
3636         return ret;
3637 }
3638
3639 /**
3640  * i40e_vsi_free_irq - Free the irq association with the OS
3641  * @vsi: the VSI being configured
3642  **/
3643 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3644 {
3645         struct i40e_pf *pf = vsi->back;
3646         struct i40e_hw *hw = &pf->hw;
3647         int base = vsi->base_vector;
3648         u32 val, qp;
3649         int i;
3650
3651         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3652                 if (!vsi->q_vectors)
3653                         return;
3654
3655                 if (!vsi->irqs_ready)
3656                         return;
3657
3658                 vsi->irqs_ready = false;
3659                 for (i = 0; i < vsi->num_q_vectors; i++) {
3660                         u16 vector = i + base;
3661
3662                         /* free only the irqs that were actually requested */
3663                         if (!vsi->q_vectors[i] ||
3664                             !vsi->q_vectors[i]->num_ringpairs)
3665                                 continue;
3666
3667                         /* clear the affinity_mask in the IRQ descriptor */
3668                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3669                                               NULL);
3670                         free_irq(pf->msix_entries[vector].vector,
3671                                  vsi->q_vectors[i]);
3672
3673                         /* Tear down the interrupt queue link list
3674                          *
3675                          * We know that they come in pairs and always
3676                          * the Rx first, then the Tx.  To clear the
3677                          * link list, stick the EOL value into the
3678                          * next_q field of the registers.
3679                          */
3680                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3681                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3682                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3683                         val |= I40E_QUEUE_END_OF_LIST
3684                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3685                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3686
3687                         while (qp != I40E_QUEUE_END_OF_LIST) {
3688                                 u32 next;
3689
3690                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3691
3692                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3693                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3694                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3695                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3696
3697                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3698                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3699
3700                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3701
3702                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3703
3704                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3705                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3706
3707                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3708                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3709                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3710                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3711
3712                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3713                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3714
3715                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3716                                 qp = next;
3717                         }
3718                 }
3719         } else {
3720                 free_irq(pf->pdev->irq, pf);
3721
3722                 val = rd32(hw, I40E_PFINT_LNKLST0);
3723                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3724                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3725                 val |= I40E_QUEUE_END_OF_LIST
3726                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3727                 wr32(hw, I40E_PFINT_LNKLST0, val);
3728
3729                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3730                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3731                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3732                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3733                          I40E_QINT_RQCTL_INTEVENT_MASK);
3734
3735                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3736                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3737
3738                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3739
3740                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3741
3742                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3743                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3744                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3745                          I40E_QINT_TQCTL_INTEVENT_MASK);
3746
3747                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3748                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3749
3750                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3751         }
3752 }
3753
3754 /**
3755  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3756  * @vsi: the VSI being configured
3757  * @v_idx: Index of vector to be freed
3758  *
3759  * This function frees the memory allocated to the q_vector.  In addition if
3760  * NAPI is enabled it will delete any references to the NAPI struct prior
3761  * to freeing the q_vector.
3762  **/
3763 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3764 {
3765         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3766         struct i40e_ring *ring;
3767
3768         if (!q_vector)
3769                 return;
3770
3771         /* disassociate q_vector from rings */
3772         i40e_for_each_ring(ring, q_vector->tx)
3773                 ring->q_vector = NULL;
3774
3775         i40e_for_each_ring(ring, q_vector->rx)
3776                 ring->q_vector = NULL;
3777
3778         /* only VSI w/ an associated netdev is set up w/ NAPI */
3779         if (vsi->netdev)
3780                 netif_napi_del(&q_vector->napi);
3781
3782         vsi->q_vectors[v_idx] = NULL;
3783
3784         kfree_rcu(q_vector, rcu);
3785 }
3786
3787 /**
3788  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3789  * @vsi: the VSI being un-configured
3790  *
3791  * This frees the memory allocated to the q_vectors and
3792  * deletes references to the NAPI struct.
3793  **/
3794 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3795 {
3796         int v_idx;
3797
3798         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3799                 i40e_free_q_vector(vsi, v_idx);
3800 }
3801
3802 /**
3803  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3804  * @pf: board private structure
3805  **/
3806 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3807 {
3808         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3809         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3810                 pci_disable_msix(pf->pdev);
3811                 kfree(pf->msix_entries);
3812                 pf->msix_entries = NULL;
3813         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3814                 pci_disable_msi(pf->pdev);
3815         }
3816         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3817 }
3818
3819 /**
3820  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3821  * @pf: board private structure
3822  *
3823  * We go through and clear interrupt specific resources and reset the structure
3824  * to pre-load conditions
3825  **/
3826 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3827 {
3828         int i;
3829
3830         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3831         for (i = 0; i < pf->num_alloc_vsi; i++)
3832                 if (pf->vsi[i])
3833                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3834         i40e_reset_interrupt_capability(pf);
3835 }
3836
3837 /**
3838  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3839  * @vsi: the VSI being configured
3840  **/
3841 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3842 {
3843         int q_idx;
3844
3845         if (!vsi->netdev)
3846                 return;
3847
3848         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3849                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3850 }
3851
3852 /**
3853  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3854  * @vsi: the VSI being configured
3855  **/
3856 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3857 {
3858         int q_idx;
3859
3860         if (!vsi->netdev)
3861                 return;
3862
3863         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3864                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3865 }
3866
3867 /**
3868  * i40e_vsi_close - Shut down a VSI
3869  * @vsi: the vsi to be quelled
3870  **/
3871 static void i40e_vsi_close(struct i40e_vsi *vsi)
3872 {
3873         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3874                 i40e_down(vsi);
3875         i40e_vsi_free_irq(vsi);
3876         i40e_vsi_free_tx_resources(vsi);
3877         i40e_vsi_free_rx_resources(vsi);
3878 }
3879
3880 /**
3881  * i40e_quiesce_vsi - Pause a given VSI
3882  * @vsi: the VSI being paused
3883  **/
3884 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3885 {
3886         if (test_bit(__I40E_DOWN, &vsi->state))
3887                 return;
3888
3889         /* No need to disable FCoE VSI when Tx suspended */
3890         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
3891             vsi->type == I40E_VSI_FCOE) {
3892                 dev_dbg(&vsi->back->pdev->dev,
3893                         "%s: VSI seid %d skipping FCoE VSI disable\n",
3894                          __func__, vsi->seid);
3895                 return;
3896         }
3897
3898         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3899         if (vsi->netdev && netif_running(vsi->netdev)) {
3900                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3901         } else {
3902                 i40e_vsi_close(vsi);
3903         }
3904 }
3905
3906 /**
3907  * i40e_unquiesce_vsi - Resume a given VSI
3908  * @vsi: the VSI being resumed
3909  **/
3910 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3911 {
3912         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3913                 return;
3914
3915         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3916         if (vsi->netdev && netif_running(vsi->netdev))
3917                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3918         else
3919                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
3920 }
3921
3922 /**
3923  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3924  * @pf: the PF
3925  **/
3926 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3927 {
3928         int v;
3929
3930         for (v = 0; v < pf->num_alloc_vsi; v++) {
3931                 if (pf->vsi[v])
3932                         i40e_quiesce_vsi(pf->vsi[v]);
3933         }
3934 }
3935
3936 /**
3937  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3938  * @pf: the PF
3939  **/
3940 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3941 {
3942         int v;
3943
3944         for (v = 0; v < pf->num_alloc_vsi; v++) {
3945                 if (pf->vsi[v])
3946                         i40e_unquiesce_vsi(pf->vsi[v]);
3947         }
3948 }
3949
3950 #ifdef CONFIG_I40E_DCB
3951 /**
3952  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
3953  * @vsi: the VSI being configured
3954  *
3955  * This function waits for the given VSI's Tx queues to be disabled.
3956  **/
3957 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
3958 {
3959         struct i40e_pf *pf = vsi->back;
3960         int i, pf_q, ret;
3961
3962         pf_q = vsi->base_queue;
3963         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3964                 /* Check and wait for the disable status of the queue */
3965                 ret = i40e_pf_txq_wait(pf, pf_q, false);
3966                 if (ret) {
3967                         dev_info(&pf->pdev->dev,
3968                                  "%s: VSI seid %d Tx ring %d disable timeout\n",
3969                                  __func__, vsi->seid, pf_q);
3970                         return ret;
3971                 }
3972         }
3973
3974         return 0;
3975 }
3976
3977 /**
3978  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
3979  * @pf: the PF
3980  *
3981  * This function waits for the Tx queues to be in disabled state for all the
3982  * VSIs that are managed by this PF.
3983  **/
3984 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
3985 {
3986         int v, ret = 0;
3987
3988         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3989                 /* No need to wait for FCoE VSI queues */
3990                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
3991                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
3992                         if (ret)
3993                                 break;
3994                 }
3995         }
3996
3997         return ret;
3998 }
3999
4000 #endif
4001 /**
4002  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4003  * @dcbcfg: the corresponding DCBx configuration structure
4004  *
4005  * Return the number of TCs from given DCBx configuration
4006  **/
4007 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4008 {
4009         u8 num_tc = 0;
4010         int i;
4011
4012         /* Scan the ETS Config Priority Table to find
4013          * traffic class enabled for a given priority
4014          * and use the traffic class index to get the
4015          * number of traffic classes enabled
4016          */
4017         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4018                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4019                         num_tc = dcbcfg->etscfg.prioritytable[i];
4020         }
4021
4022         /* Traffic class index starts from zero so
4023          * increment to return the actual count
4024          */
4025         return num_tc + 1;
4026 }
4027
4028 /**
4029  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4030  * @dcbcfg: the corresponding DCBx configuration structure
4031  *
4032  * Query the current DCB configuration and return the number of
4033  * traffic classes enabled from the given DCBX config
4034  **/
4035 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4036 {
4037         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4038         u8 enabled_tc = 1;
4039         u8 i;
4040
4041         for (i = 0; i < num_tc; i++)
4042                 enabled_tc |= 1 << i;
4043
4044         return enabled_tc;
4045 }
4046
4047 /**
4048  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4049  * @pf: PF being queried
4050  *
4051  * Return number of traffic classes enabled for the given PF
4052  **/
4053 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4054 {
4055         struct i40e_hw *hw = &pf->hw;
4056         u8 i, enabled_tc;
4057         u8 num_tc = 0;
4058         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4059
4060         /* If DCB is not enabled then always in single TC */
4061         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4062                 return 1;
4063
4064         /* MFP mode return count of enabled TCs for this PF */
4065         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4066                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4067                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4068                         if (enabled_tc & (1 << i))
4069                                 num_tc++;
4070                 }
4071                 return num_tc;
4072         }
4073
4074         /* SFP mode will be enabled for all TCs on port */
4075         return i40e_dcb_get_num_tc(dcbcfg);
4076 }
4077
4078 /**
4079  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4080  * @pf: PF being queried
4081  *
4082  * Return a bitmap for first enabled traffic class for this PF.
4083  **/
4084 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4085 {
4086         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4087         u8 i = 0;
4088
4089         if (!enabled_tc)
4090                 return 0x1; /* TC0 */
4091
4092         /* Find the first enabled TC */
4093         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4094                 if (enabled_tc & (1 << i))
4095                         break;
4096         }
4097
4098         return 1 << i;
4099 }
4100
4101 /**
4102  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4103  * @pf: PF being queried
4104  *
4105  * Return a bitmap for enabled traffic classes for this PF.
4106  **/
4107 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4108 {
4109         /* If DCB is not enabled for this PF then just return default TC */
4110         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4111                 return i40e_pf_get_default_tc(pf);
4112
4113         /* MFP mode will have enabled TCs set by FW */
4114         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4115                 return pf->hw.func_caps.enabled_tcmap;
4116
4117         /* SFP mode we want PF to be enabled for all TCs */
4118         return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4119 }
4120
4121 /**
4122  * i40e_vsi_get_bw_info - Query VSI BW Information
4123  * @vsi: the VSI being queried
4124  *
4125  * Returns 0 on success, negative value on failure
4126  **/
4127 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4128 {
4129         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4130         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4131         struct i40e_pf *pf = vsi->back;
4132         struct i40e_hw *hw = &pf->hw;
4133         i40e_status aq_ret;
4134         u32 tc_bw_max;
4135         int i;
4136
4137         /* Get the VSI level BW configuration */
4138         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4139         if (aq_ret) {
4140                 dev_info(&pf->pdev->dev,
4141                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
4142                          aq_ret, pf->hw.aq.asq_last_status);
4143                 return -EINVAL;
4144         }
4145
4146         /* Get the VSI level BW configuration per TC */
4147         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4148                                                   NULL);
4149         if (aq_ret) {
4150                 dev_info(&pf->pdev->dev,
4151                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
4152                          aq_ret, pf->hw.aq.asq_last_status);
4153                 return -EINVAL;
4154         }
4155
4156         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4157                 dev_info(&pf->pdev->dev,
4158                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4159                          bw_config.tc_valid_bits,
4160                          bw_ets_config.tc_valid_bits);
4161                 /* Still continuing */
4162         }
4163
4164         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4165         vsi->bw_max_quanta = bw_config.max_bw;
4166         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4167                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4168         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4169                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4170                 vsi->bw_ets_limit_credits[i] =
4171                                         le16_to_cpu(bw_ets_config.credits[i]);
4172                 /* 3 bits out of 4 for each TC */
4173                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4174         }
4175
4176         return 0;
4177 }
4178
4179 /**
4180  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4181  * @vsi: the VSI being configured
4182  * @enabled_tc: TC bitmap
4183  * @bw_credits: BW shared credits per TC
4184  *
4185  * Returns 0 on success, negative value on failure
4186  **/
4187 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4188                                        u8 *bw_share)
4189 {
4190         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4191         i40e_status aq_ret;
4192         int i;
4193
4194         bw_data.tc_valid_bits = enabled_tc;
4195         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4196                 bw_data.tc_bw_credits[i] = bw_share[i];
4197
4198         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4199                                           NULL);
4200         if (aq_ret) {
4201                 dev_info(&vsi->back->pdev->dev,
4202                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4203                          vsi->back->hw.aq.asq_last_status);
4204                 return -EINVAL;
4205         }
4206
4207         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4208                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4209
4210         return 0;
4211 }
4212
4213 /**
4214  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4215  * @vsi: the VSI being configured
4216  * @enabled_tc: TC map to be enabled
4217  *
4218  **/
4219 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4220 {
4221         struct net_device *netdev = vsi->netdev;
4222         struct i40e_pf *pf = vsi->back;
4223         struct i40e_hw *hw = &pf->hw;
4224         u8 netdev_tc = 0;
4225         int i;
4226         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4227
4228         if (!netdev)
4229                 return;
4230
4231         if (!enabled_tc) {
4232                 netdev_reset_tc(netdev);
4233                 return;
4234         }
4235
4236         /* Set up actual enabled TCs on the VSI */
4237         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4238                 return;
4239
4240         /* set per TC queues for the VSI */
4241         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4242                 /* Only set TC queues for enabled tcs
4243                  *
4244                  * e.g. For a VSI that has TC0 and TC3 enabled the
4245                  * enabled_tc bitmap would be 0x00001001; the driver
4246                  * will set the numtc for netdev as 2 that will be
4247                  * referenced by the netdev layer as TC 0 and 1.
4248                  */
4249                 if (vsi->tc_config.enabled_tc & (1 << i))
4250                         netdev_set_tc_queue(netdev,
4251                                         vsi->tc_config.tc_info[i].netdev_tc,
4252                                         vsi->tc_config.tc_info[i].qcount,
4253                                         vsi->tc_config.tc_info[i].qoffset);
4254         }
4255
4256         /* Assign UP2TC map for the VSI */
4257         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4258                 /* Get the actual TC# for the UP */
4259                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4260                 /* Get the mapped netdev TC# for the UP */
4261                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4262                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4263         }
4264 }
4265
4266 /**
4267  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4268  * @vsi: the VSI being configured
4269  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4270  **/
4271 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4272                                       struct i40e_vsi_context *ctxt)
4273 {
4274         /* copy just the sections touched not the entire info
4275          * since not all sections are valid as returned by
4276          * update vsi params
4277          */
4278         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4279         memcpy(&vsi->info.queue_mapping,
4280                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4281         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4282                sizeof(vsi->info.tc_mapping));
4283 }
4284
4285 /**
4286  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4287  * @vsi: VSI to be configured
4288  * @enabled_tc: TC bitmap
4289  *
4290  * This configures a particular VSI for TCs that are mapped to the
4291  * given TC bitmap. It uses default bandwidth share for TCs across
4292  * VSIs to configure TC for a particular VSI.
4293  *
4294  * NOTE:
4295  * It is expected that the VSI queues have been quisced before calling
4296  * this function.
4297  **/
4298 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4299 {
4300         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4301         struct i40e_vsi_context ctxt;
4302         int ret = 0;
4303         int i;
4304
4305         /* Check if enabled_tc is same as existing or new TCs */
4306         if (vsi->tc_config.enabled_tc == enabled_tc)
4307                 return ret;
4308
4309         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4310         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4311                 if (enabled_tc & (1 << i))
4312                         bw_share[i] = 1;
4313         }
4314
4315         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4316         if (ret) {
4317                 dev_info(&vsi->back->pdev->dev,
4318                          "Failed configuring TC map %d for VSI %d\n",
4319                          enabled_tc, vsi->seid);
4320                 goto out;
4321         }
4322
4323         /* Update Queue Pairs Mapping for currently enabled UPs */
4324         ctxt.seid = vsi->seid;
4325         ctxt.pf_num = vsi->back->hw.pf_id;
4326         ctxt.vf_num = 0;
4327         ctxt.uplink_seid = vsi->uplink_seid;
4328         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
4329         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4330
4331         /* Update the VSI after updating the VSI queue-mapping information */
4332         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4333         if (ret) {
4334                 dev_info(&vsi->back->pdev->dev,
4335                          "update vsi failed, aq_err=%d\n",
4336                          vsi->back->hw.aq.asq_last_status);
4337                 goto out;
4338         }
4339         /* update the local VSI info with updated queue map */
4340         i40e_vsi_update_queue_map(vsi, &ctxt);
4341         vsi->info.valid_sections = 0;
4342
4343         /* Update current VSI BW information */
4344         ret = i40e_vsi_get_bw_info(vsi);
4345         if (ret) {
4346                 dev_info(&vsi->back->pdev->dev,
4347                          "Failed updating vsi bw info, aq_err=%d\n",
4348                          vsi->back->hw.aq.asq_last_status);
4349                 goto out;
4350         }
4351
4352         /* Update the netdev TC setup */
4353         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4354 out:
4355         return ret;
4356 }
4357
4358 /**
4359  * i40e_veb_config_tc - Configure TCs for given VEB
4360  * @veb: given VEB
4361  * @enabled_tc: TC bitmap
4362  *
4363  * Configures given TC bitmap for VEB (switching) element
4364  **/
4365 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4366 {
4367         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4368         struct i40e_pf *pf = veb->pf;
4369         int ret = 0;
4370         int i;
4371
4372         /* No TCs or already enabled TCs just return */
4373         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4374                 return ret;
4375
4376         bw_data.tc_valid_bits = enabled_tc;
4377         /* bw_data.absolute_credits is not set (relative) */
4378
4379         /* Enable ETS TCs with equal BW Share for now */
4380         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4381                 if (enabled_tc & (1 << i))
4382                         bw_data.tc_bw_share_credits[i] = 1;
4383         }
4384
4385         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4386                                                    &bw_data, NULL);
4387         if (ret) {
4388                 dev_info(&pf->pdev->dev,
4389                          "veb bw config failed, aq_err=%d\n",
4390                          pf->hw.aq.asq_last_status);
4391                 goto out;
4392         }
4393
4394         /* Update the BW information */
4395         ret = i40e_veb_get_bw_info(veb);
4396         if (ret) {
4397                 dev_info(&pf->pdev->dev,
4398                          "Failed getting veb bw config, aq_err=%d\n",
4399                          pf->hw.aq.asq_last_status);
4400         }
4401
4402 out:
4403         return ret;
4404 }
4405
4406 #ifdef CONFIG_I40E_DCB
4407 /**
4408  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4409  * @pf: PF struct
4410  *
4411  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4412  * the caller would've quiesce all the VSIs before calling
4413  * this function
4414  **/
4415 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4416 {
4417         u8 tc_map = 0;
4418         int ret;
4419         u8 v;
4420
4421         /* Enable the TCs available on PF to all VEBs */
4422         tc_map = i40e_pf_get_tc_map(pf);
4423         for (v = 0; v < I40E_MAX_VEB; v++) {
4424                 if (!pf->veb[v])
4425                         continue;
4426                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4427                 if (ret) {
4428                         dev_info(&pf->pdev->dev,
4429                                  "Failed configuring TC for VEB seid=%d\n",
4430                                  pf->veb[v]->seid);
4431                         /* Will try to configure as many components */
4432                 }
4433         }
4434
4435         /* Update each VSI */
4436         for (v = 0; v < pf->num_alloc_vsi; v++) {
4437                 if (!pf->vsi[v])
4438                         continue;
4439
4440                 /* - Enable all TCs for the LAN VSI
4441 #ifdef I40E_FCOE
4442                  * - For FCoE VSI only enable the TC configured
4443                  *   as per the APP TLV
4444 #endif
4445                  * - For all others keep them at TC0 for now
4446                  */
4447                 if (v == pf->lan_vsi)
4448                         tc_map = i40e_pf_get_tc_map(pf);
4449                 else
4450                         tc_map = i40e_pf_get_default_tc(pf);
4451 #ifdef I40E_FCOE
4452                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4453                         tc_map = i40e_get_fcoe_tc_map(pf);
4454 #endif /* #ifdef I40E_FCOE */
4455
4456                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4457                 if (ret) {
4458                         dev_info(&pf->pdev->dev,
4459                                  "Failed configuring TC for VSI seid=%d\n",
4460                                  pf->vsi[v]->seid);
4461                         /* Will try to configure as many components */
4462                 } else {
4463                         /* Re-configure VSI vectors based on updated TC map */
4464                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4465                         if (pf->vsi[v]->netdev)
4466                                 i40e_dcbnl_set_all(pf->vsi[v]);
4467                 }
4468         }
4469 }
4470
4471 /**
4472  * i40e_resume_port_tx - Resume port Tx
4473  * @pf: PF struct
4474  *
4475  * Resume a port's Tx and issue a PF reset in case of failure to
4476  * resume.
4477  **/
4478 static int i40e_resume_port_tx(struct i40e_pf *pf)
4479 {
4480         struct i40e_hw *hw = &pf->hw;
4481         int ret;
4482
4483         ret = i40e_aq_resume_port_tx(hw, NULL);
4484         if (ret) {
4485                 dev_info(&pf->pdev->dev,
4486                          "AQ command Resume Port Tx failed = %d\n",
4487                           pf->hw.aq.asq_last_status);
4488                 /* Schedule PF reset to recover */
4489                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4490                 i40e_service_event_schedule(pf);
4491         }
4492
4493         return ret;
4494 }
4495
4496 /**
4497  * i40e_init_pf_dcb - Initialize DCB configuration
4498  * @pf: PF being configured
4499  *
4500  * Query the current DCB configuration and cache it
4501  * in the hardware structure
4502  **/
4503 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4504 {
4505         struct i40e_hw *hw = &pf->hw;
4506         int err = 0;
4507
4508         if (pf->hw.func_caps.npar_enable)
4509                 goto out;
4510
4511         /* Get the initial DCB configuration */
4512         err = i40e_init_dcb(hw);
4513         if (!err) {
4514                 /* Device/Function is not DCBX capable */
4515                 if ((!hw->func_caps.dcb) ||
4516                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4517                         dev_info(&pf->pdev->dev,
4518                                  "DCBX offload is not supported or is disabled for this PF.\n");
4519
4520                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4521                                 goto out;
4522
4523                 } else {
4524                         /* When status is not DISABLED then DCBX in FW */
4525                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4526                                        DCB_CAP_DCBX_VER_IEEE;
4527
4528                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4529                         /* Enable DCB tagging only when more than one TC */
4530                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4531                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4532                         dev_dbg(&pf->pdev->dev,
4533                                 "DCBX offload is supported for this PF.\n");
4534                 }
4535         } else {
4536                 dev_info(&pf->pdev->dev, "AQ Querying DCB configuration failed: %d\n",
4537                          pf->hw.aq.asq_last_status);
4538         }
4539
4540 out:
4541         return err;
4542 }
4543 #endif /* CONFIG_I40E_DCB */
4544 #define SPEED_SIZE 14
4545 #define FC_SIZE 8
4546 /**
4547  * i40e_print_link_message - print link up or down
4548  * @vsi: the VSI for which link needs a message
4549  */
4550 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4551 {
4552         char speed[SPEED_SIZE] = "Unknown";
4553         char fc[FC_SIZE] = "RX/TX";
4554
4555         if (!isup) {
4556                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4557                 return;
4558         }
4559
4560         switch (vsi->back->hw.phy.link_info.link_speed) {
4561         case I40E_LINK_SPEED_40GB:
4562                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4563                 break;
4564         case I40E_LINK_SPEED_10GB:
4565                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4566                 break;
4567         case I40E_LINK_SPEED_1GB:
4568                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4569                 break;
4570         case I40E_LINK_SPEED_100MB:
4571                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4572                 break;
4573         default:
4574                 break;
4575         }
4576
4577         switch (vsi->back->hw.fc.current_mode) {
4578         case I40E_FC_FULL:
4579                 strlcpy(fc, "RX/TX", FC_SIZE);
4580                 break;
4581         case I40E_FC_TX_PAUSE:
4582                 strlcpy(fc, "TX", FC_SIZE);
4583                 break;
4584         case I40E_FC_RX_PAUSE:
4585                 strlcpy(fc, "RX", FC_SIZE);
4586                 break;
4587         default:
4588                 strlcpy(fc, "None", FC_SIZE);
4589                 break;
4590         }
4591
4592         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4593                     speed, fc);
4594 }
4595
4596 /**
4597  * i40e_up_complete - Finish the last steps of bringing up a connection
4598  * @vsi: the VSI being configured
4599  **/
4600 static int i40e_up_complete(struct i40e_vsi *vsi)
4601 {
4602         struct i40e_pf *pf = vsi->back;
4603         int err;
4604
4605         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4606                 i40e_vsi_configure_msix(vsi);
4607         else
4608                 i40e_configure_msi_and_legacy(vsi);
4609
4610         /* start rings */
4611         err = i40e_vsi_control_rings(vsi, true);
4612         if (err)
4613                 return err;
4614
4615         clear_bit(__I40E_DOWN, &vsi->state);
4616         i40e_napi_enable_all(vsi);
4617         i40e_vsi_enable_irq(vsi);
4618
4619         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4620             (vsi->netdev)) {
4621                 i40e_print_link_message(vsi, true);
4622                 netif_tx_start_all_queues(vsi->netdev);
4623                 netif_carrier_on(vsi->netdev);
4624         } else if (vsi->netdev) {
4625                 i40e_print_link_message(vsi, false);
4626                 /* need to check for qualified module here*/
4627                 if ((pf->hw.phy.link_info.link_info &
4628                         I40E_AQ_MEDIA_AVAILABLE) &&
4629                     (!(pf->hw.phy.link_info.an_info &
4630                         I40E_AQ_QUALIFIED_MODULE)))
4631                         netdev_err(vsi->netdev,
4632                                    "the driver failed to link because an unqualified module was detected.");
4633         }
4634
4635         /* replay FDIR SB filters */
4636         if (vsi->type == I40E_VSI_FDIR) {
4637                 /* reset fd counters */
4638                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4639                 if (pf->fd_tcp_rule > 0) {
4640                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4641                         dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4642                         pf->fd_tcp_rule = 0;
4643                 }
4644                 i40e_fdir_filter_restore(vsi);
4645         }
4646         i40e_service_event_schedule(pf);
4647
4648         return 0;
4649 }
4650
4651 /**
4652  * i40e_vsi_reinit_locked - Reset the VSI
4653  * @vsi: the VSI being configured
4654  *
4655  * Rebuild the ring structs after some configuration
4656  * has changed, e.g. MTU size.
4657  **/
4658 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4659 {
4660         struct i40e_pf *pf = vsi->back;
4661
4662         WARN_ON(in_interrupt());
4663         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4664                 usleep_range(1000, 2000);
4665         i40e_down(vsi);
4666
4667         /* Give a VF some time to respond to the reset.  The
4668          * two second wait is based upon the watchdog cycle in
4669          * the VF driver.
4670          */
4671         if (vsi->type == I40E_VSI_SRIOV)
4672                 msleep(2000);
4673         i40e_up(vsi);
4674         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4675 }
4676
4677 /**
4678  * i40e_up - Bring the connection back up after being down
4679  * @vsi: the VSI being configured
4680  **/
4681 int i40e_up(struct i40e_vsi *vsi)
4682 {
4683         int err;
4684
4685         err = i40e_vsi_configure(vsi);
4686         if (!err)
4687                 err = i40e_up_complete(vsi);
4688
4689         return err;
4690 }
4691
4692 /**
4693  * i40e_down - Shutdown the connection processing
4694  * @vsi: the VSI being stopped
4695  **/
4696 void i40e_down(struct i40e_vsi *vsi)
4697 {
4698         int i;
4699
4700         /* It is assumed that the caller of this function
4701          * sets the vsi->state __I40E_DOWN bit.
4702          */
4703         if (vsi->netdev) {
4704                 netif_carrier_off(vsi->netdev);
4705                 netif_tx_disable(vsi->netdev);
4706         }
4707         i40e_vsi_disable_irq(vsi);
4708         i40e_vsi_control_rings(vsi, false);
4709         i40e_napi_disable_all(vsi);
4710
4711         for (i = 0; i < vsi->num_queue_pairs; i++) {
4712                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4713                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4714         }
4715 }
4716
4717 /**
4718  * i40e_setup_tc - configure multiple traffic classes
4719  * @netdev: net device to configure
4720  * @tc: number of traffic classes to enable
4721  **/
4722 #ifdef I40E_FCOE
4723 int i40e_setup_tc(struct net_device *netdev, u8 tc)
4724 #else
4725 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4726 #endif
4727 {
4728         struct i40e_netdev_priv *np = netdev_priv(netdev);
4729         struct i40e_vsi *vsi = np->vsi;
4730         struct i40e_pf *pf = vsi->back;
4731         u8 enabled_tc = 0;
4732         int ret = -EINVAL;
4733         int i;
4734
4735         /* Check if DCB enabled to continue */
4736         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4737                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4738                 goto exit;
4739         }
4740
4741         /* Check if MFP enabled */
4742         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4743                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4744                 goto exit;
4745         }
4746
4747         /* Check whether tc count is within enabled limit */
4748         if (tc > i40e_pf_get_num_tc(pf)) {
4749                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4750                 goto exit;
4751         }
4752
4753         /* Generate TC map for number of tc requested */
4754         for (i = 0; i < tc; i++)
4755                 enabled_tc |= (1 << i);
4756
4757         /* Requesting same TC configuration as already enabled */
4758         if (enabled_tc == vsi->tc_config.enabled_tc)
4759                 return 0;
4760
4761         /* Quiesce VSI queues */
4762         i40e_quiesce_vsi(vsi);
4763
4764         /* Configure VSI for enabled TCs */
4765         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4766         if (ret) {
4767                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4768                             vsi->seid);
4769                 goto exit;
4770         }
4771
4772         /* Unquiesce VSI */
4773         i40e_unquiesce_vsi(vsi);
4774
4775 exit:
4776         return ret;
4777 }
4778
4779 /**
4780  * i40e_open - Called when a network interface is made active
4781  * @netdev: network interface device structure
4782  *
4783  * The open entry point is called when a network interface is made
4784  * active by the system (IFF_UP).  At this point all resources needed
4785  * for transmit and receive operations are allocated, the interrupt
4786  * handler is registered with the OS, the netdev watchdog subtask is
4787  * enabled, and the stack is notified that the interface is ready.
4788  *
4789  * Returns 0 on success, negative value on failure
4790  **/
4791 #ifdef I40E_FCOE
4792 int i40e_open(struct net_device *netdev)
4793 #else
4794 static int i40e_open(struct net_device *netdev)
4795 #endif
4796 {
4797         struct i40e_netdev_priv *np = netdev_priv(netdev);
4798         struct i40e_vsi *vsi = np->vsi;
4799         struct i40e_pf *pf = vsi->back;
4800         int err;
4801
4802         /* disallow open during test or if eeprom is broken */
4803         if (test_bit(__I40E_TESTING, &pf->state) ||
4804             test_bit(__I40E_BAD_EEPROM, &pf->state))
4805                 return -EBUSY;
4806
4807         netif_carrier_off(netdev);
4808
4809         err = i40e_vsi_open(vsi);
4810         if (err)
4811                 return err;
4812
4813         /* configure global TSO hardware offload settings */
4814         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4815                                                        TCP_FLAG_FIN) >> 16);
4816         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4817                                                        TCP_FLAG_FIN |
4818                                                        TCP_FLAG_CWR) >> 16);
4819         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4820
4821 #ifdef CONFIG_I40E_VXLAN
4822         vxlan_get_rx_port(netdev);
4823 #endif
4824
4825         return 0;
4826 }
4827
4828 /**
4829  * i40e_vsi_open -
4830  * @vsi: the VSI to open
4831  *
4832  * Finish initialization of the VSI.
4833  *
4834  * Returns 0 on success, negative value on failure
4835  **/
4836 int i40e_vsi_open(struct i40e_vsi *vsi)
4837 {
4838         struct i40e_pf *pf = vsi->back;
4839         char int_name[IFNAMSIZ];
4840         int err;
4841
4842         /* allocate descriptors */
4843         err = i40e_vsi_setup_tx_resources(vsi);
4844         if (err)
4845                 goto err_setup_tx;
4846         err = i40e_vsi_setup_rx_resources(vsi);
4847         if (err)
4848                 goto err_setup_rx;
4849
4850         err = i40e_vsi_configure(vsi);
4851         if (err)
4852                 goto err_setup_rx;
4853
4854         if (vsi->netdev) {
4855                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4856                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4857                 err = i40e_vsi_request_irq(vsi, int_name);
4858                 if (err)
4859                         goto err_setup_rx;
4860
4861                 /* Notify the stack of the actual queue counts. */
4862                 err = netif_set_real_num_tx_queues(vsi->netdev,
4863                                                    vsi->num_queue_pairs);
4864                 if (err)
4865                         goto err_set_queues;
4866
4867                 err = netif_set_real_num_rx_queues(vsi->netdev,
4868                                                    vsi->num_queue_pairs);
4869                 if (err)
4870                         goto err_set_queues;
4871
4872         } else if (vsi->type == I40E_VSI_FDIR) {
4873                 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
4874                          dev_driver_string(&pf->pdev->dev));
4875                 err = i40e_vsi_request_irq(vsi, int_name);
4876         } else {
4877                 err = -EINVAL;
4878                 goto err_setup_rx;
4879         }
4880
4881         err = i40e_up_complete(vsi);
4882         if (err)
4883                 goto err_up_complete;
4884
4885         return 0;
4886
4887 err_up_complete:
4888         i40e_down(vsi);
4889 err_set_queues:
4890         i40e_vsi_free_irq(vsi);
4891 err_setup_rx:
4892         i40e_vsi_free_rx_resources(vsi);
4893 err_setup_tx:
4894         i40e_vsi_free_tx_resources(vsi);
4895         if (vsi == pf->vsi[pf->lan_vsi])
4896                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4897
4898         return err;
4899 }
4900
4901 /**
4902  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4903  * @pf: Pointer to pf
4904  *
4905  * This function destroys the hlist where all the Flow Director
4906  * filters were saved.
4907  **/
4908 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4909 {
4910         struct i40e_fdir_filter *filter;
4911         struct hlist_node *node2;
4912
4913         hlist_for_each_entry_safe(filter, node2,
4914                                   &pf->fdir_filter_list, fdir_node) {
4915                 hlist_del(&filter->fdir_node);
4916                 kfree(filter);
4917         }
4918         pf->fdir_pf_active_filters = 0;
4919 }
4920
4921 /**
4922  * i40e_close - Disables a network interface
4923  * @netdev: network interface device structure
4924  *
4925  * The close entry point is called when an interface is de-activated
4926  * by the OS.  The hardware is still under the driver's control, but
4927  * this netdev interface is disabled.
4928  *
4929  * Returns 0, this is not allowed to fail
4930  **/
4931 #ifdef I40E_FCOE
4932 int i40e_close(struct net_device *netdev)
4933 #else
4934 static int i40e_close(struct net_device *netdev)
4935 #endif
4936 {
4937         struct i40e_netdev_priv *np = netdev_priv(netdev);
4938         struct i40e_vsi *vsi = np->vsi;
4939
4940         i40e_vsi_close(vsi);
4941
4942         return 0;
4943 }
4944
4945 /**
4946  * i40e_do_reset - Start a PF or Core Reset sequence
4947  * @pf: board private structure
4948  * @reset_flags: which reset is requested
4949  *
4950  * The essential difference in resets is that the PF Reset
4951  * doesn't clear the packet buffers, doesn't reset the PE
4952  * firmware, and doesn't bother the other PFs on the chip.
4953  **/
4954 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
4955 {
4956         u32 val;
4957
4958         WARN_ON(in_interrupt());
4959
4960         if (i40e_check_asq_alive(&pf->hw))
4961                 i40e_vc_notify_reset(pf);
4962
4963         /* do the biggest reset indicated */
4964         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
4965
4966                 /* Request a Global Reset
4967                  *
4968                  * This will start the chip's countdown to the actual full
4969                  * chip reset event, and a warning interrupt to be sent
4970                  * to all PFs, including the requestor.  Our handler
4971                  * for the warning interrupt will deal with the shutdown
4972                  * and recovery of the switch setup.
4973                  */
4974                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
4975                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4976                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
4977                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4978
4979         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
4980
4981                 /* Request a Core Reset
4982                  *
4983                  * Same as Global Reset, except does *not* include the MAC/PHY
4984                  */
4985                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
4986                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4987                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
4988                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4989                 i40e_flush(&pf->hw);
4990
4991         } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
4992
4993                 /* Request a Firmware Reset
4994                  *
4995                  * Same as Global reset, plus restarting the
4996                  * embedded firmware engine.
4997                  */
4998                 /* enable EMP Reset */
4999                 val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
5000                 val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
5001                 wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
5002
5003                 /* force the reset */
5004                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5005                 val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
5006                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5007                 i40e_flush(&pf->hw);
5008
5009         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
5010
5011                 /* Request a PF Reset
5012                  *
5013                  * Resets only the PF-specific registers
5014                  *
5015                  * This goes directly to the tear-down and rebuild of
5016                  * the switch, since we need to do all the recovery as
5017                  * for the Core Reset.
5018                  */
5019                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5020                 i40e_handle_reset_warning(pf);
5021
5022         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
5023                 int v;
5024
5025                 /* Find the VSI(s) that requested a re-init */
5026                 dev_info(&pf->pdev->dev,
5027                          "VSI reinit requested\n");
5028                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5029                         struct i40e_vsi *vsi = pf->vsi[v];
5030                         if (vsi != NULL &&
5031                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5032                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5033                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5034                         }
5035                 }
5036
5037                 /* no further action needed, so return now */
5038                 return;
5039         } else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
5040                 int v;
5041
5042                 /* Find the VSI(s) that needs to be brought down */
5043                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5044                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5045                         struct i40e_vsi *vsi = pf->vsi[v];
5046                         if (vsi != NULL &&
5047                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5048                                 set_bit(__I40E_DOWN, &vsi->state);
5049                                 i40e_down(vsi);
5050                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5051                         }
5052                 }
5053
5054                 /* no further action needed, so return now */
5055                 return;
5056         } else {
5057                 dev_info(&pf->pdev->dev,
5058                          "bad reset request 0x%08x\n", reset_flags);
5059                 return;
5060         }
5061 }
5062
5063 #ifdef CONFIG_I40E_DCB
5064 /**
5065  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5066  * @pf: board private structure
5067  * @old_cfg: current DCB config
5068  * @new_cfg: new DCB config
5069  **/
5070 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5071                             struct i40e_dcbx_config *old_cfg,
5072                             struct i40e_dcbx_config *new_cfg)
5073 {
5074         bool need_reconfig = false;
5075
5076         /* Check if ETS configuration has changed */
5077         if (memcmp(&new_cfg->etscfg,
5078                    &old_cfg->etscfg,
5079                    sizeof(new_cfg->etscfg))) {
5080                 /* If Priority Table has changed reconfig is needed */
5081                 if (memcmp(&new_cfg->etscfg.prioritytable,
5082                            &old_cfg->etscfg.prioritytable,
5083                            sizeof(new_cfg->etscfg.prioritytable))) {
5084                         need_reconfig = true;
5085                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5086                 }
5087
5088                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5089                            &old_cfg->etscfg.tcbwtable,
5090                            sizeof(new_cfg->etscfg.tcbwtable)))
5091                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5092
5093                 if (memcmp(&new_cfg->etscfg.tsatable,
5094                            &old_cfg->etscfg.tsatable,
5095                            sizeof(new_cfg->etscfg.tsatable)))
5096                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5097         }
5098
5099         /* Check if PFC configuration has changed */
5100         if (memcmp(&new_cfg->pfc,
5101                    &old_cfg->pfc,
5102                    sizeof(new_cfg->pfc))) {
5103                 need_reconfig = true;
5104                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5105         }
5106
5107         /* Check if APP Table has changed */
5108         if (memcmp(&new_cfg->app,
5109                    &old_cfg->app,
5110                    sizeof(new_cfg->app))) {
5111                 need_reconfig = true;
5112                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5113         }
5114
5115         dev_dbg(&pf->pdev->dev, "%s: need_reconfig=%d\n", __func__,
5116                 need_reconfig);
5117         return need_reconfig;
5118 }
5119
5120 /**
5121  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5122  * @pf: board private structure
5123  * @e: event info posted on ARQ
5124  **/
5125 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5126                                   struct i40e_arq_event_info *e)
5127 {
5128         struct i40e_aqc_lldp_get_mib *mib =
5129                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5130         struct i40e_hw *hw = &pf->hw;
5131         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
5132         struct i40e_dcbx_config tmp_dcbx_cfg;
5133         bool need_reconfig = false;
5134         int ret = 0;
5135         u8 type;
5136
5137         /* Not DCB capable or capability disabled */
5138         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5139                 return ret;
5140
5141         /* Ignore if event is not for Nearest Bridge */
5142         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5143                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5144         dev_dbg(&pf->pdev->dev,
5145                 "%s: LLDP event mib bridge type 0x%x\n", __func__, type);
5146         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5147                 return ret;
5148
5149         /* Check MIB Type and return if event for Remote MIB update */
5150         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5151         dev_dbg(&pf->pdev->dev,
5152                 "%s: LLDP event mib type %s\n", __func__,
5153                 type ? "remote" : "local");
5154         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5155                 /* Update the remote cached instance and return */
5156                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5157                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5158                                 &hw->remote_dcbx_config);
5159                 goto exit;
5160         }
5161
5162         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
5163         /* Store the old configuration */
5164         tmp_dcbx_cfg = *dcbx_cfg;
5165
5166         /* Get updated DCBX data from firmware */
5167         ret = i40e_get_dcb_config(&pf->hw);
5168         if (ret) {
5169                 dev_info(&pf->pdev->dev, "Failed querying DCB configuration data from firmware.\n");
5170                 goto exit;
5171         }
5172
5173         /* No change detected in DCBX configs */
5174         if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
5175                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5176                 goto exit;
5177         }
5178
5179         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg, dcbx_cfg);
5180
5181         i40e_dcbnl_flush_apps(pf, dcbx_cfg);
5182
5183         if (!need_reconfig)
5184                 goto exit;
5185
5186         /* Enable DCB tagging only when more than one TC */
5187         if (i40e_dcb_get_num_tc(dcbx_cfg) > 1)
5188                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5189         else
5190                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5191
5192         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5193         /* Reconfiguration needed quiesce all VSIs */
5194         i40e_pf_quiesce_all_vsi(pf);
5195
5196         /* Changes in configuration update VEB/VSI */
5197         i40e_dcb_reconfigure(pf);
5198
5199         ret = i40e_resume_port_tx(pf);
5200
5201         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5202         /* In case of error no point in resuming VSIs */
5203         if (ret)
5204                 goto exit;
5205
5206         /* Wait for the PF's Tx queues to be disabled */
5207         ret = i40e_pf_wait_txq_disabled(pf);
5208         if (!ret)
5209                 i40e_pf_unquiesce_all_vsi(pf);
5210 exit:
5211         return ret;
5212 }
5213 #endif /* CONFIG_I40E_DCB */
5214
5215 /**
5216  * i40e_do_reset_safe - Protected reset path for userland calls.
5217  * @pf: board private structure
5218  * @reset_flags: which reset is requested
5219  *
5220  **/
5221 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5222 {
5223         rtnl_lock();
5224         i40e_do_reset(pf, reset_flags);
5225         rtnl_unlock();
5226 }
5227
5228 /**
5229  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5230  * @pf: board private structure
5231  * @e: event info posted on ARQ
5232  *
5233  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5234  * and VF queues
5235  **/
5236 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5237                                            struct i40e_arq_event_info *e)
5238 {
5239         struct i40e_aqc_lan_overflow *data =
5240                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5241         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5242         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5243         struct i40e_hw *hw = &pf->hw;
5244         struct i40e_vf *vf;
5245         u16 vf_id;
5246
5247         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5248                 queue, qtx_ctl);
5249
5250         /* Queue belongs to VF, find the VF and issue VF reset */
5251         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5252             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5253                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5254                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5255                 vf_id -= hw->func_caps.vf_base_id;
5256                 vf = &pf->vf[vf_id];
5257                 i40e_vc_notify_vf_reset(vf);
5258                 /* Allow VF to process pending reset notification */
5259                 msleep(20);
5260                 i40e_reset_vf(vf, false);
5261         }
5262 }
5263
5264 /**
5265  * i40e_service_event_complete - Finish up the service event
5266  * @pf: board private structure
5267  **/
5268 static void i40e_service_event_complete(struct i40e_pf *pf)
5269 {
5270         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5271
5272         /* flush memory to make sure state is correct before next watchog */
5273         smp_mb__before_atomic();
5274         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5275 }
5276
5277 /**
5278  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5279  * @pf: board private structure
5280  **/
5281 int i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5282 {
5283         int val, fcnt_prog;
5284
5285         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5286         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5287         return fcnt_prog;
5288 }
5289
5290 /**
5291  * i40e_get_current_fd_count - Get the count of total FD filters programmed
5292  * @pf: board private structure
5293  **/
5294 int i40e_get_current_fd_count(struct i40e_pf *pf)
5295 {
5296         int val, fcnt_prog;
5297         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5298         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5299                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5300                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5301         return fcnt_prog;
5302 }
5303
5304 /**
5305  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5306  * @pf: board private structure
5307  **/
5308 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5309 {
5310         u32 fcnt_prog, fcnt_avail;
5311
5312         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5313                 return;
5314
5315         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5316          * to re-enable
5317          */
5318         fcnt_prog = i40e_get_cur_guaranteed_fd_count(pf);
5319         fcnt_avail = pf->fdir_pf_filter_count;
5320         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5321             (pf->fd_add_err == 0) ||
5322             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5323                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5324                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5325                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5326                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5327                 }
5328         }
5329         /* Wait for some more space to be available to turn on ATR */
5330         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5331                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5332                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5333                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5334                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5335                 }
5336         }
5337 }
5338
5339 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5340 /**
5341  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5342  * @pf: board private structure
5343  **/
5344 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5345 {
5346         int flush_wait_retry = 50;
5347         int reg;
5348
5349         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5350                 return;
5351
5352         if (time_after(jiffies, pf->fd_flush_timestamp +
5353                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5354                 set_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5355                 pf->fd_flush_timestamp = jiffies;
5356                 pf->auto_disable_flags |= I40E_FLAG_FD_SB_ENABLED;
5357                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5358                 /* flush all filters */
5359                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5360                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5361                 i40e_flush(&pf->hw);
5362                 pf->fd_flush_cnt++;
5363                 pf->fd_add_err = 0;
5364                 do {
5365                         /* Check FD flush status every 5-6msec */
5366                         usleep_range(5000, 6000);
5367                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5368                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5369                                 break;
5370                 } while (flush_wait_retry--);
5371                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5372                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5373                 } else {
5374                         /* replay sideband filters */
5375                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5376
5377                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5378                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5379                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5380                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5381                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5382                 }
5383         }
5384 }
5385
5386 /**
5387  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5388  * @pf: board private structure
5389  **/
5390 int i40e_get_current_atr_cnt(struct i40e_pf *pf)
5391 {
5392         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5393 }
5394
5395 /* We can see up to 256 filter programming desc in transit if the filters are
5396  * being applied really fast; before we see the first
5397  * filter miss error on Rx queue 0. Accumulating enough error messages before
5398  * reacting will make sure we don't cause flush too often.
5399  */
5400 #define I40E_MAX_FD_PROGRAM_ERROR 256
5401
5402 /**
5403  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5404  * @pf: board private structure
5405  **/
5406 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5407 {
5408
5409         /* if interface is down do nothing */
5410         if (test_bit(__I40E_DOWN, &pf->state))
5411                 return;
5412
5413         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5414                 return;
5415
5416         if ((pf->fd_add_err >= I40E_MAX_FD_PROGRAM_ERROR) &&
5417             (i40e_get_current_atr_cnt(pf) >= pf->fd_atr_cnt) &&
5418             (i40e_get_current_atr_cnt(pf) > pf->fdir_pf_filter_count))
5419                 i40e_fdir_flush_and_replay(pf);
5420
5421         i40e_fdir_check_and_reenable(pf);
5422
5423 }
5424
5425 /**
5426  * i40e_vsi_link_event - notify VSI of a link event
5427  * @vsi: vsi to be notified
5428  * @link_up: link up or down
5429  **/
5430 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5431 {
5432         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5433                 return;
5434
5435         switch (vsi->type) {
5436         case I40E_VSI_MAIN:
5437 #ifdef I40E_FCOE
5438         case I40E_VSI_FCOE:
5439 #endif
5440                 if (!vsi->netdev || !vsi->netdev_registered)
5441                         break;
5442
5443                 if (link_up) {
5444                         netif_carrier_on(vsi->netdev);
5445                         netif_tx_wake_all_queues(vsi->netdev);
5446                 } else {
5447                         netif_carrier_off(vsi->netdev);
5448                         netif_tx_stop_all_queues(vsi->netdev);
5449                 }
5450                 break;
5451
5452         case I40E_VSI_SRIOV:
5453                 break;
5454
5455         case I40E_VSI_VMDQ2:
5456         case I40E_VSI_CTRL:
5457         case I40E_VSI_MIRROR:
5458         default:
5459                 /* there is no notification for other VSIs */
5460                 break;
5461         }
5462 }
5463
5464 /**
5465  * i40e_veb_link_event - notify elements on the veb of a link event
5466  * @veb: veb to be notified
5467  * @link_up: link up or down
5468  **/
5469 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5470 {
5471         struct i40e_pf *pf;
5472         int i;
5473
5474         if (!veb || !veb->pf)
5475                 return;
5476         pf = veb->pf;
5477
5478         /* depth first... */
5479         for (i = 0; i < I40E_MAX_VEB; i++)
5480                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5481                         i40e_veb_link_event(pf->veb[i], link_up);
5482
5483         /* ... now the local VSIs */
5484         for (i = 0; i < pf->num_alloc_vsi; i++)
5485                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5486                         i40e_vsi_link_event(pf->vsi[i], link_up);
5487 }
5488
5489 /**
5490  * i40e_link_event - Update netif_carrier status
5491  * @pf: board private structure
5492  **/
5493 static void i40e_link_event(struct i40e_pf *pf)
5494 {
5495         bool new_link, old_link;
5496         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5497
5498         /* set this to force the get_link_status call to refresh state */
5499         pf->hw.phy.get_link_info = true;
5500
5501         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5502         new_link = i40e_get_link_status(&pf->hw);
5503
5504         if (new_link == old_link &&
5505             (test_bit(__I40E_DOWN, &vsi->state) ||
5506              new_link == netif_carrier_ok(vsi->netdev)))
5507                 return;
5508
5509         if (!test_bit(__I40E_DOWN, &vsi->state))
5510                 i40e_print_link_message(vsi, new_link);
5511
5512         /* Notify the base of the switch tree connected to
5513          * the link.  Floating VEBs are not notified.
5514          */
5515         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5516                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5517         else
5518                 i40e_vsi_link_event(vsi, new_link);
5519
5520         if (pf->vf)
5521                 i40e_vc_notify_link_state(pf);
5522
5523         if (pf->flags & I40E_FLAG_PTP)
5524                 i40e_ptp_set_increment(pf);
5525 }
5526
5527 /**
5528  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5529  * @pf: board private structure
5530  *
5531  * Set the per-queue flags to request a check for stuck queues in the irq
5532  * clean functions, then force interrupts to be sure the irq clean is called.
5533  **/
5534 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5535 {
5536         int i, v;
5537
5538         /* If we're down or resetting, just bail */
5539         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
5540                 return;
5541
5542         /* for each VSI/netdev
5543          *     for each Tx queue
5544          *         set the check flag
5545          *     for each q_vector
5546          *         force an interrupt
5547          */
5548         for (v = 0; v < pf->num_alloc_vsi; v++) {
5549                 struct i40e_vsi *vsi = pf->vsi[v];
5550                 int armed = 0;
5551
5552                 if (!pf->vsi[v] ||
5553                     test_bit(__I40E_DOWN, &vsi->state) ||
5554                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5555                         continue;
5556
5557                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5558                         set_check_for_tx_hang(vsi->tx_rings[i]);
5559                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5560                                      &vsi->tx_rings[i]->state))
5561                                 armed++;
5562                 }
5563
5564                 if (armed) {
5565                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5566                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5567                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5568                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
5569                         } else {
5570                                 u16 vec = vsi->base_vector - 1;
5571                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5572                                            I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
5573                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5574                                         wr32(&vsi->back->hw,
5575                                              I40E_PFINT_DYN_CTLN(vec), val);
5576                         }
5577                         i40e_flush(&vsi->back->hw);
5578                 }
5579         }
5580 }
5581
5582 /**
5583  * i40e_watchdog_subtask - periodic checks not using event driven response
5584  * @pf: board private structure
5585  **/
5586 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5587 {
5588         int i;
5589
5590         /* if interface is down do nothing */
5591         if (test_bit(__I40E_DOWN, &pf->state) ||
5592             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5593                 return;
5594
5595         /* make sure we don't do these things too often */
5596         if (time_before(jiffies, (pf->service_timer_previous +
5597                                   pf->service_timer_period)))
5598                 return;
5599         pf->service_timer_previous = jiffies;
5600
5601         i40e_check_hang_subtask(pf);
5602         i40e_link_event(pf);
5603
5604         /* Update the stats for active netdevs so the network stack
5605          * can look at updated numbers whenever it cares to
5606          */
5607         for (i = 0; i < pf->num_alloc_vsi; i++)
5608                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5609                         i40e_update_stats(pf->vsi[i]);
5610
5611         /* Update the stats for the active switching components */
5612         for (i = 0; i < I40E_MAX_VEB; i++)
5613                 if (pf->veb[i])
5614                         i40e_update_veb_stats(pf->veb[i]);
5615
5616         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5617 }
5618
5619 /**
5620  * i40e_reset_subtask - Set up for resetting the device and driver
5621  * @pf: board private structure
5622  **/
5623 static void i40e_reset_subtask(struct i40e_pf *pf)
5624 {
5625         u32 reset_flags = 0;
5626
5627         rtnl_lock();
5628         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5629                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5630                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5631         }
5632         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5633                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5634                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5635         }
5636         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5637                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5638                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5639         }
5640         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5641                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5642                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5643         }
5644         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5645                 reset_flags |= (1 << __I40E_DOWN_REQUESTED);
5646                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5647         }
5648
5649         /* If there's a recovery already waiting, it takes
5650          * precedence before starting a new reset sequence.
5651          */
5652         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5653                 i40e_handle_reset_warning(pf);
5654                 goto unlock;
5655         }
5656
5657         /* If we're already down or resetting, just bail */
5658         if (reset_flags &&
5659             !test_bit(__I40E_DOWN, &pf->state) &&
5660             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5661                 i40e_do_reset(pf, reset_flags);
5662
5663 unlock:
5664         rtnl_unlock();
5665 }
5666
5667 /**
5668  * i40e_handle_link_event - Handle link event
5669  * @pf: board private structure
5670  * @e: event info posted on ARQ
5671  **/
5672 static void i40e_handle_link_event(struct i40e_pf *pf,
5673                                    struct i40e_arq_event_info *e)
5674 {
5675         struct i40e_hw *hw = &pf->hw;
5676         struct i40e_aqc_get_link_status *status =
5677                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5678         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
5679
5680         /* save off old link status information */
5681         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
5682                sizeof(pf->hw.phy.link_info_old));
5683
5684         /* Do a new status request to re-enable LSE reporting
5685          * and load new status information into the hw struct
5686          * This completely ignores any state information
5687          * in the ARQ event info, instead choosing to always
5688          * issue the AQ update link status command.
5689          */
5690         i40e_link_event(pf);
5691
5692         /* check for unqualified module, if link is down */
5693         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5694             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5695             (!(status->link_info & I40E_AQ_LINK_UP)))
5696                 dev_err(&pf->pdev->dev,
5697                         "The driver failed to link because an unqualified module was detected.\n");
5698 }
5699
5700 /**
5701  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5702  * @pf: board private structure
5703  **/
5704 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5705 {
5706         struct i40e_arq_event_info event;
5707         struct i40e_hw *hw = &pf->hw;
5708         u16 pending, i = 0;
5709         i40e_status ret;
5710         u16 opcode;
5711         u32 oldval;
5712         u32 val;
5713
5714         /* Do not run clean AQ when PF reset fails */
5715         if (test_bit(__I40E_RESET_FAILED, &pf->state))
5716                 return;
5717
5718         /* check for error indications */
5719         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5720         oldval = val;
5721         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5722                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5723                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5724         }
5725         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5726                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5727                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5728         }
5729         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5730                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5731                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5732         }
5733         if (oldval != val)
5734                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5735
5736         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5737         oldval = val;
5738         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5739                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5740                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5741         }
5742         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5743                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5744                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5745         }
5746         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5747                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5748                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5749         }
5750         if (oldval != val)
5751                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5752
5753         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
5754         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
5755         if (!event.msg_buf)
5756                 return;
5757
5758         do {
5759                 ret = i40e_clean_arq_element(hw, &event, &pending);
5760                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
5761                         break;
5762                 else if (ret) {
5763                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5764                         break;
5765                 }
5766
5767                 opcode = le16_to_cpu(event.desc.opcode);
5768                 switch (opcode) {
5769
5770                 case i40e_aqc_opc_get_link_status:
5771                         i40e_handle_link_event(pf, &event);
5772                         break;
5773                 case i40e_aqc_opc_send_msg_to_pf:
5774                         ret = i40e_vc_process_vf_msg(pf,
5775                                         le16_to_cpu(event.desc.retval),
5776                                         le32_to_cpu(event.desc.cookie_high),
5777                                         le32_to_cpu(event.desc.cookie_low),
5778                                         event.msg_buf,
5779                                         event.msg_len);
5780                         break;
5781                 case i40e_aqc_opc_lldp_update_mib:
5782                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5783 #ifdef CONFIG_I40E_DCB
5784                         rtnl_lock();
5785                         ret = i40e_handle_lldp_event(pf, &event);
5786                         rtnl_unlock();
5787 #endif /* CONFIG_I40E_DCB */
5788                         break;
5789                 case i40e_aqc_opc_event_lan_overflow:
5790                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5791                         i40e_handle_lan_overflow_event(pf, &event);
5792                         break;
5793                 case i40e_aqc_opc_send_msg_to_peer:
5794                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5795                         break;
5796                 default:
5797                         dev_info(&pf->pdev->dev,
5798                                  "ARQ Error: Unknown event 0x%04x received\n",
5799                                  opcode);
5800                         break;
5801                 }
5802         } while (pending && (i++ < pf->adminq_work_limit));
5803
5804         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5805         /* re-enable Admin queue interrupt cause */
5806         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5807         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5808         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5809         i40e_flush(hw);
5810
5811         kfree(event.msg_buf);
5812 }
5813
5814 /**
5815  * i40e_verify_eeprom - make sure eeprom is good to use
5816  * @pf: board private structure
5817  **/
5818 static void i40e_verify_eeprom(struct i40e_pf *pf)
5819 {
5820         int err;
5821
5822         err = i40e_diag_eeprom_test(&pf->hw);
5823         if (err) {
5824                 /* retry in case of garbage read */
5825                 err = i40e_diag_eeprom_test(&pf->hw);
5826                 if (err) {
5827                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5828                                  err);
5829                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5830                 }
5831         }
5832
5833         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5834                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5835                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5836         }
5837 }
5838
5839 /**
5840  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5841  * @veb: pointer to the VEB instance
5842  *
5843  * This is a recursive function that first builds the attached VSIs then
5844  * recurses in to build the next layer of VEB.  We track the connections
5845  * through our own index numbers because the seid's from the HW could
5846  * change across the reset.
5847  **/
5848 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5849 {
5850         struct i40e_vsi *ctl_vsi = NULL;
5851         struct i40e_pf *pf = veb->pf;
5852         int v, veb_idx;
5853         int ret;
5854
5855         /* build VSI that owns this VEB, temporarily attached to base VEB */
5856         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
5857                 if (pf->vsi[v] &&
5858                     pf->vsi[v]->veb_idx == veb->idx &&
5859                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5860                         ctl_vsi = pf->vsi[v];
5861                         break;
5862                 }
5863         }
5864         if (!ctl_vsi) {
5865                 dev_info(&pf->pdev->dev,
5866                          "missing owner VSI for veb_idx %d\n", veb->idx);
5867                 ret = -ENOENT;
5868                 goto end_reconstitute;
5869         }
5870         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5871                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5872         ret = i40e_add_vsi(ctl_vsi);
5873         if (ret) {
5874                 dev_info(&pf->pdev->dev,
5875                          "rebuild of owner VSI failed: %d\n", ret);
5876                 goto end_reconstitute;
5877         }
5878         i40e_vsi_reset_stats(ctl_vsi);
5879
5880         /* create the VEB in the switch and move the VSI onto the VEB */
5881         ret = i40e_add_veb(veb, ctl_vsi);
5882         if (ret)
5883                 goto end_reconstitute;
5884
5885         /* create the remaining VSIs attached to this VEB */
5886         for (v = 0; v < pf->num_alloc_vsi; v++) {
5887                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5888                         continue;
5889
5890                 if (pf->vsi[v]->veb_idx == veb->idx) {
5891                         struct i40e_vsi *vsi = pf->vsi[v];
5892                         vsi->uplink_seid = veb->seid;
5893                         ret = i40e_add_vsi(vsi);
5894                         if (ret) {
5895                                 dev_info(&pf->pdev->dev,
5896                                          "rebuild of vsi_idx %d failed: %d\n",
5897                                          v, ret);
5898                                 goto end_reconstitute;
5899                         }
5900                         i40e_vsi_reset_stats(vsi);
5901                 }
5902         }
5903
5904         /* create any VEBs attached to this VEB - RECURSION */
5905         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5906                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5907                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5908                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5909                         if (ret)
5910                                 break;
5911                 }
5912         }
5913
5914 end_reconstitute:
5915         return ret;
5916 }
5917
5918 /**
5919  * i40e_get_capabilities - get info about the HW
5920  * @pf: the PF struct
5921  **/
5922 static int i40e_get_capabilities(struct i40e_pf *pf)
5923 {
5924         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5925         u16 data_size;
5926         int buf_len;
5927         int err;
5928
5929         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5930         do {
5931                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5932                 if (!cap_buf)
5933                         return -ENOMEM;
5934
5935                 /* this loads the data into the hw struct for us */
5936                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5937                                             &data_size,
5938                                             i40e_aqc_opc_list_func_capabilities,
5939                                             NULL);
5940                 /* data loaded, buffer no longer needed */
5941                 kfree(cap_buf);
5942
5943                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
5944                         /* retry with a larger buffer */
5945                         buf_len = data_size;
5946                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
5947                         dev_info(&pf->pdev->dev,
5948                                  "capability discovery failed: aq=%d\n",
5949                                  pf->hw.aq.asq_last_status);
5950                         return -ENODEV;
5951                 }
5952         } while (err);
5953
5954         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
5955             (pf->hw.aq.fw_maj_ver < 2)) {
5956                 pf->hw.func_caps.num_msix_vectors++;
5957                 pf->hw.func_caps.num_msix_vectors_vf++;
5958         }
5959
5960         if (pf->hw.debug_mask & I40E_DEBUG_USER)
5961                 dev_info(&pf->pdev->dev,
5962                          "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",
5963                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
5964                          pf->hw.func_caps.num_msix_vectors,
5965                          pf->hw.func_caps.num_msix_vectors_vf,
5966                          pf->hw.func_caps.fd_filters_guaranteed,
5967                          pf->hw.func_caps.fd_filters_best_effort,
5968                          pf->hw.func_caps.num_tx_qp,
5969                          pf->hw.func_caps.num_vsis);
5970
5971 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
5972                        + pf->hw.func_caps.num_vfs)
5973         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
5974                 dev_info(&pf->pdev->dev,
5975                          "got num_vsis %d, setting num_vsis to %d\n",
5976                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
5977                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
5978         }
5979
5980         return 0;
5981 }
5982
5983 static int i40e_vsi_clear(struct i40e_vsi *vsi);
5984
5985 /**
5986  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
5987  * @pf: board private structure
5988  **/
5989 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
5990 {
5991         struct i40e_vsi *vsi;
5992         int i;
5993
5994         /* quick workaround for an NVM issue that leaves a critical register
5995          * uninitialized
5996          */
5997         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
5998                 static const u32 hkey[] = {
5999                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6000                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6001                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6002                         0x95b3a76d};
6003
6004                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6005                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6006         }
6007
6008         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6009                 return;
6010
6011         /* find existing VSI and see if it needs configuring */
6012         vsi = NULL;
6013         for (i = 0; i < pf->num_alloc_vsi; i++) {
6014                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6015                         vsi = pf->vsi[i];
6016                         break;
6017                 }
6018         }
6019
6020         /* create a new VSI if none exists */
6021         if (!vsi) {
6022                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6023                                      pf->vsi[pf->lan_vsi]->seid, 0);
6024                 if (!vsi) {
6025                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6026                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6027                         return;
6028                 }
6029         }
6030
6031         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6032 }
6033
6034 /**
6035  * i40e_fdir_teardown - release the Flow Director resources
6036  * @pf: board private structure
6037  **/
6038 static void i40e_fdir_teardown(struct i40e_pf *pf)
6039 {
6040         int i;
6041
6042         i40e_fdir_filter_exit(pf);
6043         for (i = 0; i < pf->num_alloc_vsi; i++) {
6044                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6045                         i40e_vsi_release(pf->vsi[i]);
6046                         break;
6047                 }
6048         }
6049 }
6050
6051 /**
6052  * i40e_prep_for_reset - prep for the core to reset
6053  * @pf: board private structure
6054  *
6055  * Close up the VFs and other things in prep for pf Reset.
6056   **/
6057 static void i40e_prep_for_reset(struct i40e_pf *pf)
6058 {
6059         struct i40e_hw *hw = &pf->hw;
6060         i40e_status ret = 0;
6061         u32 v;
6062
6063         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6064         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6065                 return;
6066
6067         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6068
6069         /* quiesce the VSIs and their queues that are not already DOWN */
6070         i40e_pf_quiesce_all_vsi(pf);
6071
6072         for (v = 0; v < pf->num_alloc_vsi; v++) {
6073                 if (pf->vsi[v])
6074                         pf->vsi[v]->seid = 0;
6075         }
6076
6077         i40e_shutdown_adminq(&pf->hw);
6078
6079         /* call shutdown HMC */
6080         if (hw->hmc.hmc_obj) {
6081                 ret = i40e_shutdown_lan_hmc(hw);
6082                 if (ret)
6083                         dev_warn(&pf->pdev->dev,
6084                                  "shutdown_lan_hmc failed: %d\n", ret);
6085         }
6086 }
6087
6088 /**
6089  * i40e_send_version - update firmware with driver version
6090  * @pf: PF struct
6091  */
6092 static void i40e_send_version(struct i40e_pf *pf)
6093 {
6094         struct i40e_driver_version dv;
6095
6096         dv.major_version = DRV_VERSION_MAJOR;
6097         dv.minor_version = DRV_VERSION_MINOR;
6098         dv.build_version = DRV_VERSION_BUILD;
6099         dv.subbuild_version = 0;
6100         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6101         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6102 }
6103
6104 /**
6105  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6106  * @pf: board private structure
6107  * @reinit: if the Main VSI needs to re-initialized.
6108  **/
6109 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6110 {
6111         struct i40e_hw *hw = &pf->hw;
6112         u8 set_fc_aq_fail = 0;
6113         i40e_status ret;
6114         u32 v;
6115
6116         /* Now we wait for GRST to settle out.
6117          * We don't have to delete the VEBs or VSIs from the hw switch
6118          * because the reset will make them disappear.
6119          */
6120         ret = i40e_pf_reset(hw);
6121         if (ret) {
6122                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6123                 set_bit(__I40E_RESET_FAILED, &pf->state);
6124                 goto clear_recovery;
6125         }
6126         pf->pfr_count++;
6127
6128         if (test_bit(__I40E_DOWN, &pf->state))
6129                 goto clear_recovery;
6130         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6131
6132         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6133         ret = i40e_init_adminq(&pf->hw);
6134         if (ret) {
6135                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
6136                 goto clear_recovery;
6137         }
6138
6139         /* re-verify the eeprom if we just had an EMP reset */
6140         if (test_bit(__I40E_EMP_RESET_REQUESTED, &pf->state)) {
6141                 clear_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
6142                 i40e_verify_eeprom(pf);
6143         }
6144
6145         i40e_clear_pxe_mode(hw);
6146         ret = i40e_get_capabilities(pf);
6147         if (ret) {
6148                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
6149                          ret);
6150                 goto end_core_reset;
6151         }
6152
6153         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6154                                 hw->func_caps.num_rx_qp,
6155                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6156         if (ret) {
6157                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6158                 goto end_core_reset;
6159         }
6160         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6161         if (ret) {
6162                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6163                 goto end_core_reset;
6164         }
6165
6166 #ifdef CONFIG_I40E_DCB
6167         ret = i40e_init_pf_dcb(pf);
6168         if (ret) {
6169                 dev_info(&pf->pdev->dev, "init_pf_dcb failed: %d\n", ret);
6170                 goto end_core_reset;
6171         }
6172 #endif /* CONFIG_I40E_DCB */
6173 #ifdef I40E_FCOE
6174         ret = i40e_init_pf_fcoe(pf);
6175         if (ret)
6176                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6177
6178 #endif
6179         /* do basic switch setup */
6180         ret = i40e_setup_pf_switch(pf, reinit);
6181         if (ret)
6182                 goto end_core_reset;
6183
6184         /* driver is only interested in link up/down and module qualification
6185          * reports from firmware
6186          */
6187         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6188                                        I40E_AQ_EVENT_LINK_UPDOWN |
6189                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6190         if (ret)
6191                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", ret);
6192
6193         /* make sure our flow control settings are restored */
6194         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6195         if (ret)
6196                 dev_info(&pf->pdev->dev, "set fc fail, aq_err %d\n", ret);
6197
6198         /* Rebuild the VSIs and VEBs that existed before reset.
6199          * They are still in our local switch element arrays, so only
6200          * need to rebuild the switch model in the HW.
6201          *
6202          * If there were VEBs but the reconstitution failed, we'll try
6203          * try to recover minimal use by getting the basic PF VSI working.
6204          */
6205         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6206                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6207                 /* find the one VEB connected to the MAC, and find orphans */
6208                 for (v = 0; v < I40E_MAX_VEB; v++) {
6209                         if (!pf->veb[v])
6210                                 continue;
6211
6212                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6213                             pf->veb[v]->uplink_seid == 0) {
6214                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6215
6216                                 if (!ret)
6217                                         continue;
6218
6219                                 /* If Main VEB failed, we're in deep doodoo,
6220                                  * so give up rebuilding the switch and set up
6221                                  * for minimal rebuild of PF VSI.
6222                                  * If orphan failed, we'll report the error
6223                                  * but try to keep going.
6224                                  */
6225                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6226                                         dev_info(&pf->pdev->dev,
6227                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6228                                                  ret);
6229                                         pf->vsi[pf->lan_vsi]->uplink_seid
6230                                                                 = pf->mac_seid;
6231                                         break;
6232                                 } else if (pf->veb[v]->uplink_seid == 0) {
6233                                         dev_info(&pf->pdev->dev,
6234                                                  "rebuild of orphan VEB failed: %d\n",
6235                                                  ret);
6236                                 }
6237                         }
6238                 }
6239         }
6240
6241         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6242                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6243                 /* no VEB, so rebuild only the Main VSI */
6244                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6245                 if (ret) {
6246                         dev_info(&pf->pdev->dev,
6247                                  "rebuild of Main VSI failed: %d\n", ret);
6248                         goto end_core_reset;
6249                 }
6250         }
6251
6252         msleep(75);
6253         ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6254         if (ret) {
6255                 dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
6256                          pf->hw.aq.asq_last_status);
6257         }
6258
6259         /* reinit the misc interrupt */
6260         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6261                 ret = i40e_setup_misc_vector(pf);
6262
6263         /* restart the VSIs that were rebuilt and running before the reset */
6264         i40e_pf_unquiesce_all_vsi(pf);
6265
6266         if (pf->num_alloc_vfs) {
6267                 for (v = 0; v < pf->num_alloc_vfs; v++)
6268                         i40e_reset_vf(&pf->vf[v], true);
6269         }
6270
6271         /* tell the firmware that we're starting */
6272         i40e_send_version(pf);
6273
6274 end_core_reset:
6275         clear_bit(__I40E_RESET_FAILED, &pf->state);
6276 clear_recovery:
6277         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6278 }
6279
6280 /**
6281  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
6282  * @pf: board private structure
6283  *
6284  * Close up the VFs and other things in prep for a Core Reset,
6285  * then get ready to rebuild the world.
6286  **/
6287 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6288 {
6289         i40e_prep_for_reset(pf);
6290         i40e_reset_and_rebuild(pf, false);
6291 }
6292
6293 /**
6294  * i40e_handle_mdd_event
6295  * @pf: pointer to the pf structure
6296  *
6297  * Called from the MDD irq handler to identify possibly malicious vfs
6298  **/
6299 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6300 {
6301         struct i40e_hw *hw = &pf->hw;
6302         bool mdd_detected = false;
6303         bool pf_mdd_detected = false;
6304         struct i40e_vf *vf;
6305         u32 reg;
6306         int i;
6307
6308         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6309                 return;
6310
6311         /* find what triggered the MDD event */
6312         reg = rd32(hw, I40E_GL_MDET_TX);
6313         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6314                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6315                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6316                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6317                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6318                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6319                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6320                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6321                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6322                                 pf->hw.func_caps.base_queue;
6323                 if (netif_msg_tx_err(pf))
6324                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d pf number 0x%02x vf number 0x%02x\n",
6325                                  event, queue, pf_num, vf_num);
6326                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6327                 mdd_detected = true;
6328         }
6329         reg = rd32(hw, I40E_GL_MDET_RX);
6330         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6331                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6332                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6333                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6334                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6335                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6336                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6337                                 pf->hw.func_caps.base_queue;
6338                 if (netif_msg_rx_err(pf))
6339                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6340                                  event, queue, func);
6341                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6342                 mdd_detected = true;
6343         }
6344
6345         if (mdd_detected) {
6346                 reg = rd32(hw, I40E_PF_MDET_TX);
6347                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6348                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6349                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6350                         pf_mdd_detected = true;
6351                 }
6352                 reg = rd32(hw, I40E_PF_MDET_RX);
6353                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6354                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6355                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6356                         pf_mdd_detected = true;
6357                 }
6358                 /* Queue belongs to the PF, initiate a reset */
6359                 if (pf_mdd_detected) {
6360                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6361                         i40e_service_event_schedule(pf);
6362                 }
6363         }
6364
6365         /* see if one of the VFs needs its hand slapped */
6366         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6367                 vf = &(pf->vf[i]);
6368                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6369                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6370                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6371                         vf->num_mdd_events++;
6372                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6373                                  i);
6374                 }
6375
6376                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6377                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6378                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6379                         vf->num_mdd_events++;
6380                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6381                                  i);
6382                 }
6383
6384                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6385                         dev_info(&pf->pdev->dev,
6386                                  "Too many MDD events on VF %d, disabled\n", i);
6387                         dev_info(&pf->pdev->dev,
6388                                  "Use PF Control I/F to re-enable the VF\n");
6389                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6390                 }
6391         }
6392
6393         /* re-enable mdd interrupt cause */
6394         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6395         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6396         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6397         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6398         i40e_flush(hw);
6399 }
6400
6401 #ifdef CONFIG_I40E_VXLAN
6402 /**
6403  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6404  * @pf: board private structure
6405  **/
6406 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6407 {
6408         struct i40e_hw *hw = &pf->hw;
6409         i40e_status ret;
6410         u8 filter_index;
6411         __be16 port;
6412         int i;
6413
6414         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6415                 return;
6416
6417         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6418
6419         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6420                 if (pf->pending_vxlan_bitmap & (1 << i)) {
6421                         pf->pending_vxlan_bitmap &= ~(1 << i);
6422                         port = pf->vxlan_ports[i];
6423                         ret = port ?
6424                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
6425                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6426                                                      &filter_index, NULL)
6427                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
6428
6429                         if (ret) {
6430                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
6431                                          port ? "adding" : "deleting",
6432                                          ntohs(port), port ? i : i);
6433
6434                                 pf->vxlan_ports[i] = 0;
6435                         } else {
6436                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
6437                                          port ? "Added" : "Deleted",
6438                                          ntohs(port), port ? i : filter_index);
6439                         }
6440                 }
6441         }
6442 }
6443
6444 #endif
6445 /**
6446  * i40e_service_task - Run the driver's async subtasks
6447  * @work: pointer to work_struct containing our data
6448  **/
6449 static void i40e_service_task(struct work_struct *work)
6450 {
6451         struct i40e_pf *pf = container_of(work,
6452                                           struct i40e_pf,
6453                                           service_task);
6454         unsigned long start_time = jiffies;
6455
6456         /* don't bother with service tasks if a reset is in progress */
6457         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6458                 i40e_service_event_complete(pf);
6459                 return;
6460         }
6461
6462         i40e_reset_subtask(pf);
6463         i40e_handle_mdd_event(pf);
6464         i40e_vc_process_vflr_event(pf);
6465         i40e_watchdog_subtask(pf);
6466         i40e_fdir_reinit_subtask(pf);
6467         i40e_sync_filters_subtask(pf);
6468 #ifdef CONFIG_I40E_VXLAN
6469         i40e_sync_vxlan_filters_subtask(pf);
6470 #endif
6471         i40e_clean_adminq_subtask(pf);
6472
6473         i40e_service_event_complete(pf);
6474
6475         /* If the tasks have taken longer than one timer cycle or there
6476          * is more work to be done, reschedule the service task now
6477          * rather than wait for the timer to tick again.
6478          */
6479         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6480             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6481             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6482             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6483                 i40e_service_event_schedule(pf);
6484 }
6485
6486 /**
6487  * i40e_service_timer - timer callback
6488  * @data: pointer to PF struct
6489  **/
6490 static void i40e_service_timer(unsigned long data)
6491 {
6492         struct i40e_pf *pf = (struct i40e_pf *)data;
6493
6494         mod_timer(&pf->service_timer,
6495                   round_jiffies(jiffies + pf->service_timer_period));
6496         i40e_service_event_schedule(pf);
6497 }
6498
6499 /**
6500  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6501  * @vsi: the VSI being configured
6502  **/
6503 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6504 {
6505         struct i40e_pf *pf = vsi->back;
6506
6507         switch (vsi->type) {
6508         case I40E_VSI_MAIN:
6509                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6510                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6511                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6512                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6513                         vsi->num_q_vectors = pf->num_lan_msix;
6514                 else
6515                         vsi->num_q_vectors = 1;
6516
6517                 break;
6518
6519         case I40E_VSI_FDIR:
6520                 vsi->alloc_queue_pairs = 1;
6521                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6522                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6523                 vsi->num_q_vectors = 1;
6524                 break;
6525
6526         case I40E_VSI_VMDQ2:
6527                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6528                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6529                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6530                 vsi->num_q_vectors = pf->num_vmdq_msix;
6531                 break;
6532
6533         case I40E_VSI_SRIOV:
6534                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6535                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6536                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6537                 break;
6538
6539 #ifdef I40E_FCOE
6540         case I40E_VSI_FCOE:
6541                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6542                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6543                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6544                 vsi->num_q_vectors = pf->num_fcoe_msix;
6545                 break;
6546
6547 #endif /* I40E_FCOE */
6548         default:
6549                 WARN_ON(1);
6550                 return -ENODATA;
6551         }
6552
6553         return 0;
6554 }
6555
6556 /**
6557  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6558  * @type: VSI pointer
6559  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6560  *
6561  * On error: returns error code (negative)
6562  * On success: returns 0
6563  **/
6564 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6565 {
6566         int size;
6567         int ret = 0;
6568
6569         /* allocate memory for both Tx and Rx ring pointers */
6570         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6571         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6572         if (!vsi->tx_rings)
6573                 return -ENOMEM;
6574         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6575
6576         if (alloc_qvectors) {
6577                 /* allocate memory for q_vector pointers */
6578                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6579                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6580                 if (!vsi->q_vectors) {
6581                         ret = -ENOMEM;
6582                         goto err_vectors;
6583                 }
6584         }
6585         return ret;
6586
6587 err_vectors:
6588         kfree(vsi->tx_rings);
6589         return ret;
6590 }
6591
6592 /**
6593  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6594  * @pf: board private structure
6595  * @type: type of VSI
6596  *
6597  * On error: returns error code (negative)
6598  * On success: returns vsi index in PF (positive)
6599  **/
6600 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6601 {
6602         int ret = -ENODEV;
6603         struct i40e_vsi *vsi;
6604         int vsi_idx;
6605         int i;
6606
6607         /* Need to protect the allocation of the VSIs at the PF level */
6608         mutex_lock(&pf->switch_mutex);
6609
6610         /* VSI list may be fragmented if VSI creation/destruction has
6611          * been happening.  We can afford to do a quick scan to look
6612          * for any free VSIs in the list.
6613          *
6614          * find next empty vsi slot, looping back around if necessary
6615          */
6616         i = pf->next_vsi;
6617         while (i < pf->num_alloc_vsi && pf->vsi[i])
6618                 i++;
6619         if (i >= pf->num_alloc_vsi) {
6620                 i = 0;
6621                 while (i < pf->next_vsi && pf->vsi[i])
6622                         i++;
6623         }
6624
6625         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6626                 vsi_idx = i;             /* Found one! */
6627         } else {
6628                 ret = -ENODEV;
6629                 goto unlock_pf;  /* out of VSI slots! */
6630         }
6631         pf->next_vsi = ++i;
6632
6633         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6634         if (!vsi) {
6635                 ret = -ENOMEM;
6636                 goto unlock_pf;
6637         }
6638         vsi->type = type;
6639         vsi->back = pf;
6640         set_bit(__I40E_DOWN, &vsi->state);
6641         vsi->flags = 0;
6642         vsi->idx = vsi_idx;
6643         vsi->rx_itr_setting = pf->rx_itr_default;
6644         vsi->tx_itr_setting = pf->tx_itr_default;
6645         vsi->netdev_registered = false;
6646         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6647         INIT_LIST_HEAD(&vsi->mac_filter_list);
6648         vsi->irqs_ready = false;
6649
6650         ret = i40e_set_num_rings_in_vsi(vsi);
6651         if (ret)
6652                 goto err_rings;
6653
6654         ret = i40e_vsi_alloc_arrays(vsi, true);
6655         if (ret)
6656                 goto err_rings;
6657
6658         /* Setup default MSIX irq handler for VSI */
6659         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6660
6661         pf->vsi[vsi_idx] = vsi;
6662         ret = vsi_idx;
6663         goto unlock_pf;
6664
6665 err_rings:
6666         pf->next_vsi = i - 1;
6667         kfree(vsi);
6668 unlock_pf:
6669         mutex_unlock(&pf->switch_mutex);
6670         return ret;
6671 }
6672
6673 /**
6674  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6675  * @type: VSI pointer
6676  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6677  *
6678  * On error: returns error code (negative)
6679  * On success: returns 0
6680  **/
6681 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6682 {
6683         /* free the ring and vector containers */
6684         if (free_qvectors) {
6685                 kfree(vsi->q_vectors);
6686                 vsi->q_vectors = NULL;
6687         }
6688         kfree(vsi->tx_rings);
6689         vsi->tx_rings = NULL;
6690         vsi->rx_rings = NULL;
6691 }
6692
6693 /**
6694  * i40e_vsi_clear - Deallocate the VSI provided
6695  * @vsi: the VSI being un-configured
6696  **/
6697 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6698 {
6699         struct i40e_pf *pf;
6700
6701         if (!vsi)
6702                 return 0;
6703
6704         if (!vsi->back)
6705                 goto free_vsi;
6706         pf = vsi->back;
6707
6708         mutex_lock(&pf->switch_mutex);
6709         if (!pf->vsi[vsi->idx]) {
6710                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6711                         vsi->idx, vsi->idx, vsi, vsi->type);
6712                 goto unlock_vsi;
6713         }
6714
6715         if (pf->vsi[vsi->idx] != vsi) {
6716                 dev_err(&pf->pdev->dev,
6717                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6718                         pf->vsi[vsi->idx]->idx,
6719                         pf->vsi[vsi->idx],
6720                         pf->vsi[vsi->idx]->type,
6721                         vsi->idx, vsi, vsi->type);
6722                 goto unlock_vsi;
6723         }
6724
6725         /* updates the pf for this cleared vsi */
6726         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6727         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6728
6729         i40e_vsi_free_arrays(vsi, true);
6730
6731         pf->vsi[vsi->idx] = NULL;
6732         if (vsi->idx < pf->next_vsi)
6733                 pf->next_vsi = vsi->idx;
6734
6735 unlock_vsi:
6736         mutex_unlock(&pf->switch_mutex);
6737 free_vsi:
6738         kfree(vsi);
6739
6740         return 0;
6741 }
6742
6743 /**
6744  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6745  * @vsi: the VSI being cleaned
6746  **/
6747 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6748 {
6749         int i;
6750
6751         if (vsi->tx_rings && vsi->tx_rings[0]) {
6752                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6753                         kfree_rcu(vsi->tx_rings[i], rcu);
6754                         vsi->tx_rings[i] = NULL;
6755                         vsi->rx_rings[i] = NULL;
6756                 }
6757         }
6758 }
6759
6760 /**
6761  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6762  * @vsi: the VSI being configured
6763  **/
6764 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6765 {
6766         struct i40e_ring *tx_ring, *rx_ring;
6767         struct i40e_pf *pf = vsi->back;
6768         int i;
6769
6770         /* Set basic values in the rings to be used later during open() */
6771         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6772                 /* allocate space for both Tx and Rx in one shot */
6773                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6774                 if (!tx_ring)
6775                         goto err_out;
6776
6777                 tx_ring->queue_index = i;
6778                 tx_ring->reg_idx = vsi->base_queue + i;
6779                 tx_ring->ring_active = false;
6780                 tx_ring->vsi = vsi;
6781                 tx_ring->netdev = vsi->netdev;
6782                 tx_ring->dev = &pf->pdev->dev;
6783                 tx_ring->count = vsi->num_desc;
6784                 tx_ring->size = 0;
6785                 tx_ring->dcb_tc = 0;
6786                 vsi->tx_rings[i] = tx_ring;
6787
6788                 rx_ring = &tx_ring[1];
6789                 rx_ring->queue_index = i;
6790                 rx_ring->reg_idx = vsi->base_queue + i;
6791                 rx_ring->ring_active = false;
6792                 rx_ring->vsi = vsi;
6793                 rx_ring->netdev = vsi->netdev;
6794                 rx_ring->dev = &pf->pdev->dev;
6795                 rx_ring->count = vsi->num_desc;
6796                 rx_ring->size = 0;
6797                 rx_ring->dcb_tc = 0;
6798                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6799                         set_ring_16byte_desc_enabled(rx_ring);
6800                 else
6801                         clear_ring_16byte_desc_enabled(rx_ring);
6802                 vsi->rx_rings[i] = rx_ring;
6803         }
6804
6805         return 0;
6806
6807 err_out:
6808         i40e_vsi_clear_rings(vsi);
6809         return -ENOMEM;
6810 }
6811
6812 /**
6813  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6814  * @pf: board private structure
6815  * @vectors: the number of MSI-X vectors to request
6816  *
6817  * Returns the number of vectors reserved, or error
6818  **/
6819 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6820 {
6821         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6822                                         I40E_MIN_MSIX, vectors);
6823         if (vectors < 0) {
6824                 dev_info(&pf->pdev->dev,
6825                          "MSI-X vector reservation failed: %d\n", vectors);
6826                 vectors = 0;
6827         }
6828
6829         return vectors;
6830 }
6831
6832 /**
6833  * i40e_init_msix - Setup the MSIX capability
6834  * @pf: board private structure
6835  *
6836  * Work with the OS to set up the MSIX vectors needed.
6837  *
6838  * Returns 0 on success, negative on failure
6839  **/
6840 static int i40e_init_msix(struct i40e_pf *pf)
6841 {
6842         i40e_status err = 0;
6843         struct i40e_hw *hw = &pf->hw;
6844         int other_vecs = 0;
6845         int v_budget, i;
6846         int vec;
6847
6848         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6849                 return -ENODEV;
6850
6851         /* The number of vectors we'll request will be comprised of:
6852          *   - Add 1 for "other" cause for Admin Queue events, etc.
6853          *   - The number of LAN queue pairs
6854          *      - Queues being used for RSS.
6855          *              We don't need as many as max_rss_size vectors.
6856          *              use rss_size instead in the calculation since that
6857          *              is governed by number of cpus in the system.
6858          *      - assumes symmetric Tx/Rx pairing
6859          *   - The number of VMDq pairs
6860 #ifdef I40E_FCOE
6861          *   - The number of FCOE qps.
6862 #endif
6863          * Once we count this up, try the request.
6864          *
6865          * If we can't get what we want, we'll simplify to nearly nothing
6866          * and try again.  If that still fails, we punt.
6867          */
6868         pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
6869         pf->num_vmdq_msix = pf->num_vmdq_qps;
6870         other_vecs = 1;
6871         other_vecs += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6872         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6873                 other_vecs++;
6874
6875 #ifdef I40E_FCOE
6876         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6877                 pf->num_fcoe_msix = pf->num_fcoe_qps;
6878                 v_budget += pf->num_fcoe_msix;
6879         }
6880
6881 #endif
6882         /* Scale down if necessary, and the rings will share vectors */
6883         pf->num_lan_msix = min_t(int, pf->num_lan_msix,
6884                         (hw->func_caps.num_msix_vectors - other_vecs));
6885         v_budget = pf->num_lan_msix + other_vecs;
6886
6887         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6888                                    GFP_KERNEL);
6889         if (!pf->msix_entries)
6890                 return -ENOMEM;
6891
6892         for (i = 0; i < v_budget; i++)
6893                 pf->msix_entries[i].entry = i;
6894         vec = i40e_reserve_msix_vectors(pf, v_budget);
6895
6896         if (vec != v_budget) {
6897                 /* If we have limited resources, we will start with no vectors
6898                  * for the special features and then allocate vectors to some
6899                  * of these features based on the policy and at the end disable
6900                  * the features that did not get any vectors.
6901                  */
6902 #ifdef I40E_FCOE
6903                 pf->num_fcoe_qps = 0;
6904                 pf->num_fcoe_msix = 0;
6905 #endif
6906                 pf->num_vmdq_msix = 0;
6907         }
6908
6909         if (vec < I40E_MIN_MSIX) {
6910                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6911                 kfree(pf->msix_entries);
6912                 pf->msix_entries = NULL;
6913                 return -ENODEV;
6914
6915         } else if (vec == I40E_MIN_MSIX) {
6916                 /* Adjust for minimal MSIX use */
6917                 pf->num_vmdq_vsis = 0;
6918                 pf->num_vmdq_qps = 0;
6919                 pf->num_lan_qps = 1;
6920                 pf->num_lan_msix = 1;
6921
6922         } else if (vec != v_budget) {
6923                 /* reserve the misc vector */
6924                 vec--;
6925
6926                 /* Scale vector usage down */
6927                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
6928                 pf->num_vmdq_vsis = 1;
6929
6930                 /* partition out the remaining vectors */
6931                 switch (vec) {
6932                 case 2:
6933                         pf->num_lan_msix = 1;
6934                         break;
6935                 case 3:
6936 #ifdef I40E_FCOE
6937                         /* give one vector to FCoE */
6938                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6939                                 pf->num_lan_msix = 1;
6940                                 pf->num_fcoe_msix = 1;
6941                         }
6942 #else
6943                         pf->num_lan_msix = 2;
6944 #endif
6945                         break;
6946                 default:
6947 #ifdef I40E_FCOE
6948                         /* give one vector to FCoE */
6949                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6950                                 pf->num_fcoe_msix = 1;
6951                                 vec--;
6952                         }
6953 #endif
6954                         pf->num_lan_msix = min_t(int, (vec / 2),
6955                                                  pf->num_lan_qps);
6956                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
6957                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
6958                         break;
6959                 }
6960         }
6961
6962         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
6963             (pf->num_vmdq_msix == 0)) {
6964                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
6965                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
6966         }
6967 #ifdef I40E_FCOE
6968
6969         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
6970                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
6971                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
6972         }
6973 #endif
6974         return err;
6975 }
6976
6977 /**
6978  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
6979  * @vsi: the VSI being configured
6980  * @v_idx: index of the vector in the vsi struct
6981  *
6982  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
6983  **/
6984 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
6985 {
6986         struct i40e_q_vector *q_vector;
6987
6988         /* allocate q_vector */
6989         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
6990         if (!q_vector)
6991                 return -ENOMEM;
6992
6993         q_vector->vsi = vsi;
6994         q_vector->v_idx = v_idx;
6995         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
6996         if (vsi->netdev)
6997                 netif_napi_add(vsi->netdev, &q_vector->napi,
6998                                i40e_napi_poll, NAPI_POLL_WEIGHT);
6999
7000         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7001         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7002
7003         /* tie q_vector and vsi together */
7004         vsi->q_vectors[v_idx] = q_vector;
7005
7006         return 0;
7007 }
7008
7009 /**
7010  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7011  * @vsi: the VSI being configured
7012  *
7013  * We allocate one q_vector per queue interrupt.  If allocation fails we
7014  * return -ENOMEM.
7015  **/
7016 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7017 {
7018         struct i40e_pf *pf = vsi->back;
7019         int v_idx, num_q_vectors;
7020         int err;
7021
7022         /* if not MSIX, give the one vector only to the LAN VSI */
7023         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7024                 num_q_vectors = vsi->num_q_vectors;
7025         else if (vsi == pf->vsi[pf->lan_vsi])
7026                 num_q_vectors = 1;
7027         else
7028                 return -EINVAL;
7029
7030         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7031                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7032                 if (err)
7033                         goto err_out;
7034         }
7035
7036         return 0;
7037
7038 err_out:
7039         while (v_idx--)
7040                 i40e_free_q_vector(vsi, v_idx);
7041
7042         return err;
7043 }
7044
7045 /**
7046  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7047  * @pf: board private structure to initialize
7048  **/
7049 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
7050 {
7051         int err = 0;
7052
7053         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7054                 err = i40e_init_msix(pf);
7055                 if (err) {
7056                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7057 #ifdef I40E_FCOE
7058                                        I40E_FLAG_FCOE_ENABLED   |
7059 #endif
7060                                        I40E_FLAG_RSS_ENABLED    |
7061                                        I40E_FLAG_DCB_CAPABLE    |
7062                                        I40E_FLAG_SRIOV_ENABLED  |
7063                                        I40E_FLAG_FD_SB_ENABLED  |
7064                                        I40E_FLAG_FD_ATR_ENABLED |
7065                                        I40E_FLAG_VMDQ_ENABLED);
7066
7067                         /* rework the queue expectations without MSIX */
7068                         i40e_determine_queue_usage(pf);
7069                 }
7070         }
7071
7072         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7073             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7074                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7075                 err = pci_enable_msi(pf->pdev);
7076                 if (err) {
7077                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
7078                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7079                 }
7080         }
7081
7082         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7083                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7084
7085         /* track first vector for misc interrupts */
7086         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
7087 }
7088
7089 /**
7090  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7091  * @pf: board private structure
7092  *
7093  * This sets up the handler for MSIX 0, which is used to manage the
7094  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7095  * when in MSI or Legacy interrupt mode.
7096  **/
7097 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7098 {
7099         struct i40e_hw *hw = &pf->hw;
7100         int err = 0;
7101
7102         /* Only request the irq if this is the first time through, and
7103          * not when we're rebuilding after a Reset
7104          */
7105         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7106                 err = request_irq(pf->msix_entries[0].vector,
7107                                   i40e_intr, 0, pf->misc_int_name, pf);
7108                 if (err) {
7109                         dev_info(&pf->pdev->dev,
7110                                  "request_irq for %s failed: %d\n",
7111                                  pf->misc_int_name, err);
7112                         return -EFAULT;
7113                 }
7114         }
7115
7116         i40e_enable_misc_int_causes(hw);
7117
7118         /* associate no queues to the misc vector */
7119         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7120         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7121
7122         i40e_flush(hw);
7123
7124         i40e_irq_dynamic_enable_icr0(pf);
7125
7126         return err;
7127 }
7128
7129 /**
7130  * i40e_config_rss - Prepare for RSS if used
7131  * @pf: board private structure
7132  **/
7133 static int i40e_config_rss(struct i40e_pf *pf)
7134 {
7135         u32 rss_key[I40E_PFQF_HKEY_MAX_INDEX + 1];
7136         struct i40e_hw *hw = &pf->hw;
7137         u32 lut = 0;
7138         int i, j;
7139         u64 hena;
7140         u32 reg_val;
7141
7142         netdev_rss_key_fill(rss_key, sizeof(rss_key));
7143         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7144                 wr32(hw, I40E_PFQF_HKEY(i), rss_key[i]);
7145
7146         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7147         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7148                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7149         hena |= I40E_DEFAULT_RSS_HENA;
7150         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7151         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7152
7153         /* Check capability and Set table size and register per hw expectation*/
7154         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7155         if (hw->func_caps.rss_table_size == 512) {
7156                 reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7157                 pf->rss_table_size = 512;
7158         } else {
7159                 pf->rss_table_size = 128;
7160                 reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7161         }
7162         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7163
7164         /* Populate the LUT with max no. of queues in round robin fashion */
7165         for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
7166
7167                 /* The assumption is that lan qp count will be the highest
7168                  * qp count for any PF VSI that needs RSS.
7169                  * If multiple VSIs need RSS support, all the qp counts
7170                  * for those VSIs should be a power of 2 for RSS to work.
7171                  * If LAN VSI is the only consumer for RSS then this requirement
7172                  * is not necessary.
7173                  */
7174                 if (j == pf->rss_size)
7175                         j = 0;
7176                 /* lut = 4-byte sliding window of 4 lut entries */
7177                 lut = (lut << 8) | (j &
7178                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
7179                 /* On i = 3, we have 4 entries in lut; write to the register */
7180                 if ((i & 3) == 3)
7181                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
7182         }
7183         i40e_flush(hw);
7184
7185         return 0;
7186 }
7187
7188 /**
7189  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7190  * @pf: board private structure
7191  * @queue_count: the requested queue count for rss.
7192  *
7193  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7194  * count which may be different from the requested queue count.
7195  **/
7196 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7197 {
7198         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7199                 return 0;
7200
7201         queue_count = min_t(int, queue_count, pf->rss_size_max);
7202
7203         if (queue_count != pf->rss_size) {
7204                 i40e_prep_for_reset(pf);
7205
7206                 pf->rss_size = queue_count;
7207
7208                 i40e_reset_and_rebuild(pf, true);
7209                 i40e_config_rss(pf);
7210         }
7211         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7212         return pf->rss_size;
7213 }
7214
7215 /**
7216  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7217  * @pf: board private structure to initialize
7218  *
7219  * i40e_sw_init initializes the Adapter private data structure.
7220  * Fields are initialized based on PCI device information and
7221  * OS network device settings (MTU size).
7222  **/
7223 static int i40e_sw_init(struct i40e_pf *pf)
7224 {
7225         int err = 0;
7226         int size;
7227
7228         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7229                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7230         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7231         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7232                 if (I40E_DEBUG_USER & debug)
7233                         pf->hw.debug_mask = debug;
7234                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7235                                                 I40E_DEFAULT_MSG_ENABLE);
7236         }
7237
7238         /* Set default capability flags */
7239         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7240                     I40E_FLAG_MSI_ENABLED     |
7241                     I40E_FLAG_MSIX_ENABLED    |
7242                     I40E_FLAG_RX_1BUF_ENABLED;
7243
7244         /* Set default ITR */
7245         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7246         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7247
7248         /* Depending on PF configurations, it is possible that the RSS
7249          * maximum might end up larger than the available queues
7250          */
7251         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
7252         pf->rss_size = 1;
7253         pf->rss_size_max = min_t(int, pf->rss_size_max,
7254                                  pf->hw.func_caps.num_tx_qp);
7255         if (pf->hw.func_caps.rss) {
7256                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7257                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7258         }
7259
7260         /* MFP mode enabled */
7261         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
7262                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7263                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7264         }
7265
7266         /* FW/NVM is not yet fixed in this regard */
7267         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7268             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7269                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7270                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7271                 /* Setup a counter for fd_atr per pf */
7272                 pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
7273                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7274                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7275                         /* Setup a counter for fd_sb per pf */
7276                         pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
7277                 } else {
7278                         dev_info(&pf->pdev->dev,
7279                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7280                 }
7281                 pf->fdir_pf_filter_count =
7282                                  pf->hw.func_caps.fd_filters_guaranteed;
7283                 pf->hw.fdir_shared_filter_count =
7284                                  pf->hw.func_caps.fd_filters_best_effort;
7285         }
7286
7287         if (pf->hw.func_caps.vmdq) {
7288                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7289                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7290                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
7291         }
7292
7293 #ifdef I40E_FCOE
7294         err = i40e_init_pf_fcoe(pf);
7295         if (err)
7296                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7297
7298 #endif /* I40E_FCOE */
7299 #ifdef CONFIG_PCI_IOV
7300         if (pf->hw.func_caps.num_vfs) {
7301                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7302                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7303                 pf->num_req_vfs = min_t(int,
7304                                         pf->hw.func_caps.num_vfs,
7305                                         I40E_MAX_VF_COUNT);
7306         }
7307 #endif /* CONFIG_PCI_IOV */
7308         pf->eeprom_version = 0xDEAD;
7309         pf->lan_veb = I40E_NO_VEB;
7310         pf->lan_vsi = I40E_NO_VSI;
7311
7312         /* set up queue assignment tracking */
7313         size = sizeof(struct i40e_lump_tracking)
7314                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7315         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7316         if (!pf->qp_pile) {
7317                 err = -ENOMEM;
7318                 goto sw_init_done;
7319         }
7320         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7321         pf->qp_pile->search_hint = 0;
7322
7323         /* set up vector assignment tracking */
7324         size = sizeof(struct i40e_lump_tracking)
7325                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
7326         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7327         if (!pf->irq_pile) {
7328                 kfree(pf->qp_pile);
7329                 err = -ENOMEM;
7330                 goto sw_init_done;
7331         }
7332         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
7333         pf->irq_pile->search_hint = 0;
7334
7335         pf->tx_timeout_recovery_level = 1;
7336
7337         mutex_init(&pf->switch_mutex);
7338
7339 sw_init_done:
7340         return err;
7341 }
7342
7343 /**
7344  * i40e_set_ntuple - set the ntuple feature flag and take action
7345  * @pf: board private structure to initialize
7346  * @features: the feature set that the stack is suggesting
7347  *
7348  * returns a bool to indicate if reset needs to happen
7349  **/
7350 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7351 {
7352         bool need_reset = false;
7353
7354         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7355          * the state changed, we need to reset.
7356          */
7357         if (features & NETIF_F_NTUPLE) {
7358                 /* Enable filters and mark for reset */
7359                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7360                         need_reset = true;
7361                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7362         } else {
7363                 /* turn off filters, mark for reset and clear SW filter list */
7364                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7365                         need_reset = true;
7366                         i40e_fdir_filter_exit(pf);
7367                 }
7368                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7369                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7370                 /* reset fd counters */
7371                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7372                 pf->fdir_pf_active_filters = 0;
7373                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7374                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7375                 /* if ATR was auto disabled it can be re-enabled. */
7376                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
7377                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
7378                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
7379         }
7380         return need_reset;
7381 }
7382
7383 /**
7384  * i40e_set_features - set the netdev feature flags
7385  * @netdev: ptr to the netdev being adjusted
7386  * @features: the feature set that the stack is suggesting
7387  **/
7388 static int i40e_set_features(struct net_device *netdev,
7389                              netdev_features_t features)
7390 {
7391         struct i40e_netdev_priv *np = netdev_priv(netdev);
7392         struct i40e_vsi *vsi = np->vsi;
7393         struct i40e_pf *pf = vsi->back;
7394         bool need_reset;
7395
7396         if (features & NETIF_F_HW_VLAN_CTAG_RX)
7397                 i40e_vlan_stripping_enable(vsi);
7398         else
7399                 i40e_vlan_stripping_disable(vsi);
7400
7401         need_reset = i40e_set_ntuple(pf, features);
7402
7403         if (need_reset)
7404                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7405
7406         return 0;
7407 }
7408
7409 #ifdef CONFIG_I40E_VXLAN
7410 /**
7411  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
7412  * @pf: board private structure
7413  * @port: The UDP port to look up
7414  *
7415  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
7416  **/
7417 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
7418 {
7419         u8 i;
7420
7421         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7422                 if (pf->vxlan_ports[i] == port)
7423                         return i;
7424         }
7425
7426         return i;
7427 }
7428
7429 /**
7430  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
7431  * @netdev: This physical port's netdev
7432  * @sa_family: Socket Family that VXLAN is notifying us about
7433  * @port: New UDP port number that VXLAN started listening to
7434  **/
7435 static void i40e_add_vxlan_port(struct net_device *netdev,
7436                                 sa_family_t sa_family, __be16 port)
7437 {
7438         struct i40e_netdev_priv *np = netdev_priv(netdev);
7439         struct i40e_vsi *vsi = np->vsi;
7440         struct i40e_pf *pf = vsi->back;
7441         u8 next_idx;
7442         u8 idx;
7443
7444         if (sa_family == AF_INET6)
7445                 return;
7446
7447         idx = i40e_get_vxlan_port_idx(pf, port);
7448
7449         /* Check if port already exists */
7450         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7451                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
7452                 return;
7453         }
7454
7455         /* Now check if there is space to add the new port */
7456         next_idx = i40e_get_vxlan_port_idx(pf, 0);
7457
7458         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7459                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
7460                             ntohs(port));
7461                 return;
7462         }
7463
7464         /* New port: add it and mark its index in the bitmap */
7465         pf->vxlan_ports[next_idx] = port;
7466         pf->pending_vxlan_bitmap |= (1 << next_idx);
7467
7468         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7469 }
7470
7471 /**
7472  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
7473  * @netdev: This physical port's netdev
7474  * @sa_family: Socket Family that VXLAN is notifying us about
7475  * @port: UDP port number that VXLAN stopped listening to
7476  **/
7477 static void i40e_del_vxlan_port(struct net_device *netdev,
7478                                 sa_family_t sa_family, __be16 port)
7479 {
7480         struct i40e_netdev_priv *np = netdev_priv(netdev);
7481         struct i40e_vsi *vsi = np->vsi;
7482         struct i40e_pf *pf = vsi->back;
7483         u8 idx;
7484
7485         if (sa_family == AF_INET6)
7486                 return;
7487
7488         idx = i40e_get_vxlan_port_idx(pf, port);
7489
7490         /* Check if port already exists */
7491         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7492                 /* if port exists, set it to 0 (mark for deletion)
7493                  * and make it pending
7494                  */
7495                 pf->vxlan_ports[idx] = 0;
7496
7497                 pf->pending_vxlan_bitmap |= (1 << idx);
7498
7499                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7500         } else {
7501                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
7502                             ntohs(port));
7503         }
7504 }
7505
7506 #endif
7507 static int i40e_get_phys_port_id(struct net_device *netdev,
7508                                  struct netdev_phys_port_id *ppid)
7509 {
7510         struct i40e_netdev_priv *np = netdev_priv(netdev);
7511         struct i40e_pf *pf = np->vsi->back;
7512         struct i40e_hw *hw = &pf->hw;
7513
7514         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
7515                 return -EOPNOTSUPP;
7516
7517         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
7518         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
7519
7520         return 0;
7521 }
7522
7523 #ifdef HAVE_FDB_OPS
7524 #ifdef USE_CONST_DEV_UC_CHAR
7525 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
7526                             struct net_device *dev,
7527                             const unsigned char *addr,
7528                             u16 flags)
7529 #else
7530 static int i40e_ndo_fdb_add(struct ndmsg *ndm,
7531                             struct net_device *dev,
7532                             unsigned char *addr,
7533                             u16 flags)
7534 #endif
7535 {
7536         struct i40e_netdev_priv *np = netdev_priv(dev);
7537         struct i40e_pf *pf = np->vsi->back;
7538         int err = 0;
7539
7540         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
7541                 return -EOPNOTSUPP;
7542
7543         /* Hardware does not support aging addresses so if a
7544          * ndm_state is given only allow permanent addresses
7545          */
7546         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
7547                 netdev_info(dev, "FDB only supports static addresses\n");
7548                 return -EINVAL;
7549         }
7550
7551         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
7552                 err = dev_uc_add_excl(dev, addr);
7553         else if (is_multicast_ether_addr(addr))
7554                 err = dev_mc_add_excl(dev, addr);
7555         else
7556                 err = -EINVAL;
7557
7558         /* Only return duplicate errors if NLM_F_EXCL is set */
7559         if (err == -EEXIST && !(flags & NLM_F_EXCL))
7560                 err = 0;
7561
7562         return err;
7563 }
7564
7565 #ifndef USE_DEFAULT_FDB_DEL_DUMP
7566 #ifdef USE_CONST_DEV_UC_CHAR
7567 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
7568                             struct net_device *dev,
7569                             const unsigned char *addr)
7570 #else
7571 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
7572                             struct net_device *dev,
7573                             unsigned char *addr)
7574 #endif
7575 {
7576         struct i40e_netdev_priv *np = netdev_priv(dev);
7577         struct i40e_pf *pf = np->vsi->back;
7578         int err = -EOPNOTSUPP;
7579
7580         if (ndm->ndm_state & NUD_PERMANENT) {
7581                 netdev_info(dev, "FDB only supports static addresses\n");
7582                 return -EINVAL;
7583         }
7584
7585         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
7586                 if (is_unicast_ether_addr(addr))
7587                         err = dev_uc_del(dev, addr);
7588                 else if (is_multicast_ether_addr(addr))
7589                         err = dev_mc_del(dev, addr);
7590                 else
7591                         err = -EINVAL;
7592         }
7593
7594         return err;
7595 }
7596
7597 static int i40e_ndo_fdb_dump(struct sk_buff *skb,
7598                              struct netlink_callback *cb,
7599                              struct net_device *dev,
7600                              struct net_device *filter_dev,
7601                              int idx)
7602 {
7603         struct i40e_netdev_priv *np = netdev_priv(dev);
7604         struct i40e_pf *pf = np->vsi->back;
7605
7606         if (pf->flags & I40E_FLAG_SRIOV_ENABLED)
7607                 idx = ndo_dflt_fdb_dump(skb, cb, dev, filter_dev, idx);
7608
7609         return idx;
7610 }
7611
7612 #endif /* USE_DEFAULT_FDB_DEL_DUMP */
7613 #endif /* HAVE_FDB_OPS */
7614 static const struct net_device_ops i40e_netdev_ops = {
7615         .ndo_open               = i40e_open,
7616         .ndo_stop               = i40e_close,
7617         .ndo_start_xmit         = i40e_lan_xmit_frame,
7618         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
7619         .ndo_set_rx_mode        = i40e_set_rx_mode,
7620         .ndo_validate_addr      = eth_validate_addr,
7621         .ndo_set_mac_address    = i40e_set_mac,
7622         .ndo_change_mtu         = i40e_change_mtu,
7623         .ndo_do_ioctl           = i40e_ioctl,
7624         .ndo_tx_timeout         = i40e_tx_timeout,
7625         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
7626         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
7627 #ifdef CONFIG_NET_POLL_CONTROLLER
7628         .ndo_poll_controller    = i40e_netpoll,
7629 #endif
7630         .ndo_setup_tc           = i40e_setup_tc,
7631 #ifdef I40E_FCOE
7632         .ndo_fcoe_enable        = i40e_fcoe_enable,
7633         .ndo_fcoe_disable       = i40e_fcoe_disable,
7634 #endif
7635         .ndo_set_features       = i40e_set_features,
7636         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
7637         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
7638         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
7639         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
7640         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
7641         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
7642 #ifdef CONFIG_I40E_VXLAN
7643         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
7644         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
7645 #endif
7646         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
7647 #ifdef HAVE_FDB_OPS
7648         .ndo_fdb_add            = i40e_ndo_fdb_add,
7649 #ifndef USE_DEFAULT_FDB_DEL_DUMP
7650         .ndo_fdb_del            = i40e_ndo_fdb_del,
7651         .ndo_fdb_dump           = i40e_ndo_fdb_dump,
7652 #endif
7653 #endif
7654 };
7655
7656 /**
7657  * i40e_config_netdev - Setup the netdev flags
7658  * @vsi: the VSI being configured
7659  *
7660  * Returns 0 on success, negative value on failure
7661  **/
7662 static int i40e_config_netdev(struct i40e_vsi *vsi)
7663 {
7664         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
7665         struct i40e_pf *pf = vsi->back;
7666         struct i40e_hw *hw = &pf->hw;
7667         struct i40e_netdev_priv *np;
7668         struct net_device *netdev;
7669         u8 mac_addr[ETH_ALEN];
7670         int etherdev_size;
7671
7672         etherdev_size = sizeof(struct i40e_netdev_priv);
7673         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
7674         if (!netdev)
7675                 return -ENOMEM;
7676
7677         vsi->netdev = netdev;
7678         np = netdev_priv(netdev);
7679         np->vsi = vsi;
7680
7681         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
7682                                   NETIF_F_GSO_UDP_TUNNEL |
7683                                   NETIF_F_TSO;
7684
7685         netdev->features = NETIF_F_SG                  |
7686                            NETIF_F_IP_CSUM             |
7687                            NETIF_F_SCTP_CSUM           |
7688                            NETIF_F_HIGHDMA             |
7689                            NETIF_F_GSO_UDP_TUNNEL      |
7690                            NETIF_F_HW_VLAN_CTAG_TX     |
7691                            NETIF_F_HW_VLAN_CTAG_RX     |
7692                            NETIF_F_HW_VLAN_CTAG_FILTER |
7693                            NETIF_F_IPV6_CSUM           |
7694                            NETIF_F_TSO                 |
7695                            NETIF_F_TSO_ECN             |
7696                            NETIF_F_TSO6                |
7697                            NETIF_F_RXCSUM              |
7698                            NETIF_F_RXHASH              |
7699                            0;
7700
7701         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
7702                 netdev->features |= NETIF_F_NTUPLE;
7703
7704         /* copy netdev features into list of user selectable features */
7705         netdev->hw_features |= netdev->features;
7706
7707         if (vsi->type == I40E_VSI_MAIN) {
7708                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
7709                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
7710                 /* The following steps are necessary to prevent reception
7711                  * of tagged packets - some older NVM configurations load a
7712                  * default a MAC-VLAN filter that accepts any tagged packet
7713                  * which must be replaced by a normal filter.
7714                  */
7715                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
7716                         i40e_add_filter(vsi, mac_addr,
7717                                         I40E_VLAN_ANY, false, true);
7718         } else {
7719                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
7720                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
7721                          pf->vsi[pf->lan_vsi]->netdev->name);
7722                 random_ether_addr(mac_addr);
7723                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
7724         }
7725         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
7726
7727         ether_addr_copy(netdev->dev_addr, mac_addr);
7728         ether_addr_copy(netdev->perm_addr, mac_addr);
7729         /* vlan gets same features (except vlan offload)
7730          * after any tweaks for specific VSI types
7731          */
7732         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
7733                                                      NETIF_F_HW_VLAN_CTAG_RX |
7734                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
7735         netdev->priv_flags |= IFF_UNICAST_FLT;
7736         netdev->priv_flags |= IFF_SUPP_NOFCS;
7737         /* Setup netdev TC information */
7738         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
7739
7740         netdev->netdev_ops = &i40e_netdev_ops;
7741         netdev->watchdog_timeo = 5 * HZ;
7742         i40e_set_ethtool_ops(netdev);
7743 #ifdef I40E_FCOE
7744         i40e_fcoe_config_netdev(netdev, vsi);
7745 #endif
7746
7747         return 0;
7748 }
7749
7750 /**
7751  * i40e_vsi_delete - Delete a VSI from the switch
7752  * @vsi: the VSI being removed
7753  *
7754  * Returns 0 on success, negative value on failure
7755  **/
7756 static void i40e_vsi_delete(struct i40e_vsi *vsi)
7757 {
7758         /* remove default VSI is not allowed */
7759         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
7760                 return;
7761
7762         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
7763 }
7764
7765 /**
7766  * i40e_add_vsi - Add a VSI to the switch
7767  * @vsi: the VSI being configured
7768  *
7769  * This initializes a VSI context depending on the VSI type to be added and
7770  * passes it down to the add_vsi aq command.
7771  **/
7772 static int i40e_add_vsi(struct i40e_vsi *vsi)
7773 {
7774         int ret = -ENODEV;
7775         struct i40e_mac_filter *f, *ftmp;
7776         struct i40e_pf *pf = vsi->back;
7777         struct i40e_hw *hw = &pf->hw;
7778         struct i40e_vsi_context ctxt;
7779         u8 enabled_tc = 0x1; /* TC0 enabled */
7780         int f_count = 0;
7781
7782         memset(&ctxt, 0, sizeof(ctxt));
7783         switch (vsi->type) {
7784         case I40E_VSI_MAIN:
7785                 /* The PF's main VSI is already setup as part of the
7786                  * device initialization, so we'll not bother with
7787                  * the add_vsi call, but we will retrieve the current
7788                  * VSI context.
7789                  */
7790                 ctxt.seid = pf->main_vsi_seid;
7791                 ctxt.pf_num = pf->hw.pf_id;
7792                 ctxt.vf_num = 0;
7793                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
7794                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7795                 if (ret) {
7796                         dev_info(&pf->pdev->dev,
7797                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
7798                                  ret, pf->hw.aq.asq_last_status);
7799                         return -ENOENT;
7800                 }
7801                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7802                 vsi->info.valid_sections = 0;
7803
7804                 vsi->seid = ctxt.seid;
7805                 vsi->id = ctxt.vsi_number;
7806
7807                 enabled_tc = i40e_pf_get_tc_map(pf);
7808
7809                 /* MFP mode setup queue map and update VSI */
7810                 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
7811                         memset(&ctxt, 0, sizeof(ctxt));
7812                         ctxt.seid = pf->main_vsi_seid;
7813                         ctxt.pf_num = pf->hw.pf_id;
7814                         ctxt.vf_num = 0;
7815                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
7816                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
7817                         if (ret) {
7818                                 dev_info(&pf->pdev->dev,
7819                                          "update vsi failed, aq_err=%d\n",
7820                                          pf->hw.aq.asq_last_status);
7821                                 ret = -ENOENT;
7822                                 goto err;
7823                         }
7824                         /* update the local VSI info queue map */
7825                         i40e_vsi_update_queue_map(vsi, &ctxt);
7826                         vsi->info.valid_sections = 0;
7827                 } else {
7828                         /* Default/Main VSI is only enabled for TC0
7829                          * reconfigure it to enable all TCs that are
7830                          * available on the port in SFP mode.
7831                          */
7832                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
7833                         if (ret) {
7834                                 dev_info(&pf->pdev->dev,
7835                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
7836                                          enabled_tc, ret,
7837                                          pf->hw.aq.asq_last_status);
7838                                 ret = -ENOENT;
7839                         }
7840                 }
7841                 break;
7842
7843         case I40E_VSI_FDIR:
7844                 ctxt.pf_num = hw->pf_id;
7845                 ctxt.vf_num = 0;
7846                 ctxt.uplink_seid = vsi->uplink_seid;
7847                 ctxt.connection_type = 0x1;     /* regular data port */
7848                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7849                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7850                 break;
7851
7852         case I40E_VSI_VMDQ2:
7853                 ctxt.pf_num = hw->pf_id;
7854                 ctxt.vf_num = 0;
7855                 ctxt.uplink_seid = vsi->uplink_seid;
7856                 ctxt.connection_type = 0x1;     /* regular data port */
7857                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
7858
7859                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7860
7861                 /* This VSI is connected to VEB so the switch_id
7862                  * should be set to zero by default.
7863                  */
7864                 ctxt.info.switch_id = 0;
7865                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7866
7867                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7868                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7869                 break;
7870
7871         case I40E_VSI_SRIOV:
7872                 ctxt.pf_num = hw->pf_id;
7873                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
7874                 ctxt.uplink_seid = vsi->uplink_seid;
7875                 ctxt.connection_type = 0x1;     /* regular data port */
7876                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
7877
7878                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7879
7880                 /* This VSI is connected to VEB so the switch_id
7881                  * should be set to zero by default.
7882                  */
7883                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7884
7885                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
7886                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
7887                 if (pf->vf[vsi->vf_id].spoofchk) {
7888                         ctxt.info.valid_sections |=
7889                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
7890                         ctxt.info.sec_flags |=
7891                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
7892                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
7893                 }
7894                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7895                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7896                 break;
7897
7898 #ifdef I40E_FCOE
7899         case I40E_VSI_FCOE:
7900                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
7901                 if (ret) {
7902                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
7903                         return ret;
7904                 }
7905                 break;
7906
7907 #endif /* I40E_FCOE */
7908         default:
7909                 return -ENODEV;
7910         }
7911
7912         if (vsi->type != I40E_VSI_MAIN) {
7913                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
7914                 if (ret) {
7915                         dev_info(&vsi->back->pdev->dev,
7916                                  "add vsi failed, aq_err=%d\n",
7917                                  vsi->back->hw.aq.asq_last_status);
7918                         ret = -ENOENT;
7919                         goto err;
7920                 }
7921                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7922                 vsi->info.valid_sections = 0;
7923                 vsi->seid = ctxt.seid;
7924                 vsi->id = ctxt.vsi_number;
7925         }
7926
7927         /* If macvlan filters already exist, force them to get loaded */
7928         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
7929                 f->changed = true;
7930                 f_count++;
7931
7932                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
7933                         struct i40e_aqc_remove_macvlan_element_data element;
7934
7935                         memset(&element, 0, sizeof(element));
7936                         ether_addr_copy(element.mac_addr, f->macaddr);
7937                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
7938                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
7939                                                      &element, 1, NULL);
7940                         if (ret) {
7941                                 /* some older FW has a different default */
7942                                 element.flags |=
7943                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
7944                                 i40e_aq_remove_macvlan(hw, vsi->seid,
7945                                                        &element, 1, NULL);
7946                         }
7947
7948                         i40e_aq_mac_address_write(hw,
7949                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
7950                                                   f->macaddr, NULL);
7951                 }
7952         }
7953         if (f_count) {
7954                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
7955                 pf->flags |= I40E_FLAG_FILTER_SYNC;
7956         }
7957
7958         /* Update VSI BW information */
7959         ret = i40e_vsi_get_bw_info(vsi);
7960         if (ret) {
7961                 dev_info(&pf->pdev->dev,
7962                          "couldn't get vsi bw info, err %d, aq_err %d\n",
7963                          ret, pf->hw.aq.asq_last_status);
7964                 /* VSI is already added so not tearing that up */
7965                 ret = 0;
7966         }
7967
7968 err:
7969         return ret;
7970 }
7971
7972 /**
7973  * i40e_vsi_release - Delete a VSI and free its resources
7974  * @vsi: the VSI being removed
7975  *
7976  * Returns 0 on success or < 0 on error
7977  **/
7978 int i40e_vsi_release(struct i40e_vsi *vsi)
7979 {
7980         struct i40e_mac_filter *f, *ftmp;
7981         struct i40e_veb *veb = NULL;
7982         struct i40e_pf *pf;
7983         u16 uplink_seid;
7984         int i, n;
7985
7986         pf = vsi->back;
7987
7988         /* release of a VEB-owner or last VSI is not allowed */
7989         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
7990                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
7991                          vsi->seid, vsi->uplink_seid);
7992                 return -ENODEV;
7993         }
7994         if (vsi == pf->vsi[pf->lan_vsi] &&
7995             !test_bit(__I40E_DOWN, &pf->state)) {
7996                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
7997                 return -ENODEV;
7998         }
7999
8000         uplink_seid = vsi->uplink_seid;
8001         if (vsi->type != I40E_VSI_SRIOV) {
8002                 if (vsi->netdev_registered) {
8003                         vsi->netdev_registered = false;
8004                         if (vsi->netdev) {
8005                                 /* results in a call to i40e_close() */
8006                                 unregister_netdev(vsi->netdev);
8007                         }
8008                 } else {
8009                         i40e_vsi_close(vsi);
8010                 }
8011                 i40e_vsi_disable_irq(vsi);
8012         }
8013
8014         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8015                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8016                                 f->is_vf, f->is_netdev);
8017         i40e_sync_vsi_filters(vsi);
8018
8019         i40e_vsi_delete(vsi);
8020         i40e_vsi_free_q_vectors(vsi);
8021         if (vsi->netdev) {
8022                 free_netdev(vsi->netdev);
8023                 vsi->netdev = NULL;
8024         }
8025         i40e_vsi_clear_rings(vsi);
8026         i40e_vsi_clear(vsi);
8027
8028         /* If this was the last thing on the VEB, except for the
8029          * controlling VSI, remove the VEB, which puts the controlling
8030          * VSI onto the next level down in the switch.
8031          *
8032          * Well, okay, there's one more exception here: don't remove
8033          * the orphan VEBs yet.  We'll wait for an explicit remove request
8034          * from up the network stack.
8035          */
8036         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8037                 if (pf->vsi[i] &&
8038                     pf->vsi[i]->uplink_seid == uplink_seid &&
8039                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8040                         n++;      /* count the VSIs */
8041                 }
8042         }
8043         for (i = 0; i < I40E_MAX_VEB; i++) {
8044                 if (!pf->veb[i])
8045                         continue;
8046                 if (pf->veb[i]->uplink_seid == uplink_seid)
8047                         n++;     /* count the VEBs */
8048                 if (pf->veb[i]->seid == uplink_seid)
8049                         veb = pf->veb[i];
8050         }
8051         if (n == 0 && veb && veb->uplink_seid != 0)
8052                 i40e_veb_release(veb);
8053
8054         return 0;
8055 }
8056
8057 /**
8058  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8059  * @vsi: ptr to the VSI
8060  *
8061  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8062  * corresponding SW VSI structure and initializes num_queue_pairs for the
8063  * newly allocated VSI.
8064  *
8065  * Returns 0 on success or negative on failure
8066  **/
8067 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8068 {
8069         int ret = -ENOENT;
8070         struct i40e_pf *pf = vsi->back;
8071
8072         if (vsi->q_vectors[0]) {
8073                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8074                          vsi->seid);
8075                 return -EEXIST;
8076         }
8077
8078         if (vsi->base_vector) {
8079                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8080                          vsi->seid, vsi->base_vector);
8081                 return -EEXIST;
8082         }
8083
8084         ret = i40e_vsi_alloc_q_vectors(vsi);
8085         if (ret) {
8086                 dev_info(&pf->pdev->dev,
8087                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8088                          vsi->num_q_vectors, vsi->seid, ret);
8089                 vsi->num_q_vectors = 0;
8090                 goto vector_setup_out;
8091         }
8092
8093         if (vsi->num_q_vectors)
8094                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8095                                                  vsi->num_q_vectors, vsi->idx);
8096         if (vsi->base_vector < 0) {
8097                 dev_info(&pf->pdev->dev,
8098                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8099                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8100                 i40e_vsi_free_q_vectors(vsi);
8101                 ret = -ENOENT;
8102                 goto vector_setup_out;
8103         }
8104
8105 vector_setup_out:
8106         return ret;
8107 }
8108
8109 /**
8110  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8111  * @vsi: pointer to the vsi.
8112  *
8113  * This re-allocates a vsi's queue resources.
8114  *
8115  * Returns pointer to the successfully allocated and configured VSI sw struct
8116  * on success, otherwise returns NULL on failure.
8117  **/
8118 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8119 {
8120         struct i40e_pf *pf = vsi->back;
8121         u8 enabled_tc;
8122         int ret;
8123
8124         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8125         i40e_vsi_clear_rings(vsi);
8126
8127         i40e_vsi_free_arrays(vsi, false);
8128         i40e_set_num_rings_in_vsi(vsi);
8129         ret = i40e_vsi_alloc_arrays(vsi, false);
8130         if (ret)
8131                 goto err_vsi;
8132
8133         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8134         if (ret < 0) {
8135                 dev_info(&pf->pdev->dev,
8136                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8137                          vsi->alloc_queue_pairs, vsi->seid, ret);
8138                 goto err_vsi;
8139         }
8140         vsi->base_queue = ret;
8141
8142         /* Update the FW view of the VSI. Force a reset of TC and queue
8143          * layout configurations.
8144          */
8145         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8146         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8147         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8148         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8149
8150         /* assign it some queues */
8151         ret = i40e_alloc_rings(vsi);
8152         if (ret)
8153                 goto err_rings;
8154
8155         /* map all of the rings to the q_vectors */
8156         i40e_vsi_map_rings_to_vectors(vsi);
8157         return vsi;
8158
8159 err_rings:
8160         i40e_vsi_free_q_vectors(vsi);
8161         if (vsi->netdev_registered) {
8162                 vsi->netdev_registered = false;
8163                 unregister_netdev(vsi->netdev);
8164                 free_netdev(vsi->netdev);
8165                 vsi->netdev = NULL;
8166         }
8167         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8168 err_vsi:
8169         i40e_vsi_clear(vsi);
8170         return NULL;
8171 }
8172
8173 /**
8174  * i40e_vsi_setup - Set up a VSI by a given type
8175  * @pf: board private structure
8176  * @type: VSI type
8177  * @uplink_seid: the switch element to link to
8178  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8179  *
8180  * This allocates the sw VSI structure and its queue resources, then add a VSI
8181  * to the identified VEB.
8182  *
8183  * Returns pointer to the successfully allocated and configure VSI sw struct on
8184  * success, otherwise returns NULL on failure.
8185  **/
8186 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8187                                 u16 uplink_seid, u32 param1)
8188 {
8189         struct i40e_vsi *vsi = NULL;
8190         struct i40e_veb *veb = NULL;
8191         int ret, i;
8192         int v_idx;
8193
8194         /* The requested uplink_seid must be either
8195          *     - the PF's port seid
8196          *              no VEB is needed because this is the PF
8197          *              or this is a Flow Director special case VSI
8198          *     - seid of an existing VEB
8199          *     - seid of a VSI that owns an existing VEB
8200          *     - seid of a VSI that doesn't own a VEB
8201          *              a new VEB is created and the VSI becomes the owner
8202          *     - seid of the PF VSI, which is what creates the first VEB
8203          *              this is a special case of the previous
8204          *
8205          * Find which uplink_seid we were given and create a new VEB if needed
8206          */
8207         for (i = 0; i < I40E_MAX_VEB; i++) {
8208                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8209                         veb = pf->veb[i];
8210                         break;
8211                 }
8212         }
8213
8214         if (!veb && uplink_seid != pf->mac_seid) {
8215
8216                 for (i = 0; i < pf->num_alloc_vsi; i++) {
8217                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8218                                 vsi = pf->vsi[i];
8219                                 break;
8220                         }
8221                 }
8222                 if (!vsi) {
8223                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8224                                  uplink_seid);
8225                         return NULL;
8226                 }
8227
8228                 if (vsi->uplink_seid == pf->mac_seid)
8229                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8230                                              vsi->tc_config.enabled_tc);
8231                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8232                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8233                                              vsi->tc_config.enabled_tc);
8234
8235                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8236                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8237                                 veb = pf->veb[i];
8238                 }
8239                 if (!veb) {
8240                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
8241                         return NULL;
8242                 }
8243
8244                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8245                 uplink_seid = veb->seid;
8246         }
8247
8248         /* get vsi sw struct */
8249         v_idx = i40e_vsi_mem_alloc(pf, type);
8250         if (v_idx < 0)
8251                 goto err_alloc;
8252         vsi = pf->vsi[v_idx];
8253         if (!vsi)
8254                 goto err_alloc;
8255         vsi->type = type;
8256         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
8257
8258         if (type == I40E_VSI_MAIN)
8259                 pf->lan_vsi = v_idx;
8260         else if (type == I40E_VSI_SRIOV)
8261                 vsi->vf_id = param1;
8262         /* assign it some queues */
8263         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
8264                                 vsi->idx);
8265         if (ret < 0) {
8266                 dev_info(&pf->pdev->dev,
8267                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8268                          vsi->alloc_queue_pairs, vsi->seid, ret);
8269                 goto err_vsi;
8270         }
8271         vsi->base_queue = ret;
8272
8273         /* get a VSI from the hardware */
8274         vsi->uplink_seid = uplink_seid;
8275         ret = i40e_add_vsi(vsi);
8276         if (ret)
8277                 goto err_vsi;
8278
8279         switch (vsi->type) {
8280         /* setup the netdev if needed */
8281         case I40E_VSI_MAIN:
8282         case I40E_VSI_VMDQ2:
8283         case I40E_VSI_FCOE:
8284                 ret = i40e_config_netdev(vsi);
8285                 if (ret)
8286                         goto err_netdev;
8287                 ret = register_netdev(vsi->netdev);
8288                 if (ret)
8289                         goto err_netdev;
8290                 vsi->netdev_registered = true;
8291                 netif_carrier_off(vsi->netdev);
8292 #ifdef CONFIG_I40E_DCB
8293                 /* Setup DCB netlink interface */
8294                 i40e_dcbnl_setup(vsi);
8295 #endif /* CONFIG_I40E_DCB */
8296                 /* fall through */
8297
8298         case I40E_VSI_FDIR:
8299                 /* set up vectors and rings if needed */
8300                 ret = i40e_vsi_setup_vectors(vsi);
8301                 if (ret)
8302                         goto err_msix;
8303
8304                 ret = i40e_alloc_rings(vsi);
8305                 if (ret)
8306                         goto err_rings;
8307
8308                 /* map all of the rings to the q_vectors */
8309                 i40e_vsi_map_rings_to_vectors(vsi);
8310
8311                 i40e_vsi_reset_stats(vsi);
8312                 break;
8313
8314         default:
8315                 /* no netdev or rings for the other VSI types */
8316                 break;
8317         }
8318
8319         return vsi;
8320
8321 err_rings:
8322         i40e_vsi_free_q_vectors(vsi);
8323 err_msix:
8324         if (vsi->netdev_registered) {
8325                 vsi->netdev_registered = false;
8326                 unregister_netdev(vsi->netdev);
8327                 free_netdev(vsi->netdev);
8328                 vsi->netdev = NULL;
8329         }
8330 err_netdev:
8331         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8332 err_vsi:
8333         i40e_vsi_clear(vsi);
8334 err_alloc:
8335         return NULL;
8336 }
8337
8338 /**
8339  * i40e_veb_get_bw_info - Query VEB BW information
8340  * @veb: the veb to query
8341  *
8342  * Query the Tx scheduler BW configuration data for given VEB
8343  **/
8344 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
8345 {
8346         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
8347         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
8348         struct i40e_pf *pf = veb->pf;
8349         struct i40e_hw *hw = &pf->hw;
8350         u32 tc_bw_max;
8351         int ret = 0;
8352         int i;
8353
8354         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
8355                                                   &bw_data, NULL);
8356         if (ret) {
8357                 dev_info(&pf->pdev->dev,
8358                          "query veb bw config failed, aq_err=%d\n",
8359                          hw->aq.asq_last_status);
8360                 goto out;
8361         }
8362
8363         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
8364                                                    &ets_data, NULL);
8365         if (ret) {
8366                 dev_info(&pf->pdev->dev,
8367                          "query veb bw ets config failed, aq_err=%d\n",
8368                          hw->aq.asq_last_status);
8369                 goto out;
8370         }
8371
8372         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
8373         veb->bw_max_quanta = ets_data.tc_bw_max;
8374         veb->is_abs_credits = bw_data.absolute_credits_enable;
8375         veb->enabled_tc = ets_data.tc_valid_bits;
8376         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
8377                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
8378         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
8379                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
8380                 veb->bw_tc_limit_credits[i] =
8381                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
8382                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
8383         }
8384
8385 out:
8386         return ret;
8387 }
8388
8389 /**
8390  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
8391  * @pf: board private structure
8392  *
8393  * On error: returns error code (negative)
8394  * On success: returns vsi index in PF (positive)
8395  **/
8396 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
8397 {
8398         int ret = -ENOENT;
8399         struct i40e_veb *veb;
8400         int i;
8401
8402         /* Need to protect the allocation of switch elements at the PF level */
8403         mutex_lock(&pf->switch_mutex);
8404
8405         /* VEB list may be fragmented if VEB creation/destruction has
8406          * been happening.  We can afford to do a quick scan to look
8407          * for any free slots in the list.
8408          *
8409          * find next empty veb slot, looping back around if necessary
8410          */
8411         i = 0;
8412         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
8413                 i++;
8414         if (i >= I40E_MAX_VEB) {
8415                 ret = -ENOMEM;
8416                 goto err_alloc_veb;  /* out of VEB slots! */
8417         }
8418
8419         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
8420         if (!veb) {
8421                 ret = -ENOMEM;
8422                 goto err_alloc_veb;
8423         }
8424         veb->pf = pf;
8425         veb->idx = i;
8426         veb->enabled_tc = 1;
8427
8428         pf->veb[i] = veb;
8429         ret = i;
8430 err_alloc_veb:
8431         mutex_unlock(&pf->switch_mutex);
8432         return ret;
8433 }
8434
8435 /**
8436  * i40e_switch_branch_release - Delete a branch of the switch tree
8437  * @branch: where to start deleting
8438  *
8439  * This uses recursion to find the tips of the branch to be
8440  * removed, deleting until we get back to and can delete this VEB.
8441  **/
8442 static void i40e_switch_branch_release(struct i40e_veb *branch)
8443 {
8444         struct i40e_pf *pf = branch->pf;
8445         u16 branch_seid = branch->seid;
8446         u16 veb_idx = branch->idx;
8447         int i;
8448
8449         /* release any VEBs on this VEB - RECURSION */
8450         for (i = 0; i < I40E_MAX_VEB; i++) {
8451                 if (!pf->veb[i])
8452                         continue;
8453                 if (pf->veb[i]->uplink_seid == branch->seid)
8454                         i40e_switch_branch_release(pf->veb[i]);
8455         }
8456
8457         /* Release the VSIs on this VEB, but not the owner VSI.
8458          *
8459          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
8460          *       the VEB itself, so don't use (*branch) after this loop.
8461          */
8462         for (i = 0; i < pf->num_alloc_vsi; i++) {
8463                 if (!pf->vsi[i])
8464                         continue;
8465                 if (pf->vsi[i]->uplink_seid == branch_seid &&
8466                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8467                         i40e_vsi_release(pf->vsi[i]);
8468                 }
8469         }
8470
8471         /* There's one corner case where the VEB might not have been
8472          * removed, so double check it here and remove it if needed.
8473          * This case happens if the veb was created from the debugfs
8474          * commands and no VSIs were added to it.
8475          */
8476         if (pf->veb[veb_idx])
8477                 i40e_veb_release(pf->veb[veb_idx]);
8478 }
8479
8480 /**
8481  * i40e_veb_clear - remove veb struct
8482  * @veb: the veb to remove
8483  **/
8484 static void i40e_veb_clear(struct i40e_veb *veb)
8485 {
8486         if (!veb)
8487                 return;
8488
8489         if (veb->pf) {
8490                 struct i40e_pf *pf = veb->pf;
8491
8492                 mutex_lock(&pf->switch_mutex);
8493                 if (pf->veb[veb->idx] == veb)
8494                         pf->veb[veb->idx] = NULL;
8495                 mutex_unlock(&pf->switch_mutex);
8496         }
8497
8498         kfree(veb);
8499 }
8500
8501 /**
8502  * i40e_veb_release - Delete a VEB and free its resources
8503  * @veb: the VEB being removed
8504  **/
8505 void i40e_veb_release(struct i40e_veb *veb)
8506 {
8507         struct i40e_vsi *vsi = NULL;
8508         struct i40e_pf *pf;
8509         int i, n = 0;
8510
8511         pf = veb->pf;
8512
8513         /* find the remaining VSI and check for extras */
8514         for (i = 0; i < pf->num_alloc_vsi; i++) {
8515                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
8516                         n++;
8517                         vsi = pf->vsi[i];
8518                 }
8519         }
8520         if (n != 1) {
8521                 dev_info(&pf->pdev->dev,
8522                          "can't remove VEB %d with %d VSIs left\n",
8523                          veb->seid, n);
8524                 return;
8525         }
8526
8527         /* move the remaining VSI to uplink veb */
8528         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
8529         if (veb->uplink_seid) {
8530                 vsi->uplink_seid = veb->uplink_seid;
8531                 if (veb->uplink_seid == pf->mac_seid)
8532                         vsi->veb_idx = I40E_NO_VEB;
8533                 else
8534                         vsi->veb_idx = veb->veb_idx;
8535         } else {
8536                 /* floating VEB */
8537                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
8538                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
8539         }
8540
8541         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
8542         i40e_veb_clear(veb);
8543 }
8544
8545 /**
8546  * i40e_add_veb - create the VEB in the switch
8547  * @veb: the VEB to be instantiated
8548  * @vsi: the controlling VSI
8549  **/
8550 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
8551 {
8552         bool is_default = false;
8553         bool is_cloud = false;
8554         int ret;
8555
8556         /* get a VEB from the hardware */
8557         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
8558                               veb->enabled_tc, is_default,
8559                               is_cloud, &veb->seid, NULL);
8560         if (ret) {
8561                 dev_info(&veb->pf->pdev->dev,
8562                          "couldn't add VEB, err %d, aq_err %d\n",
8563                          ret, veb->pf->hw.aq.asq_last_status);
8564                 return -EPERM;
8565         }
8566
8567         /* get statistics counter */
8568         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
8569                                          &veb->stats_idx, NULL, NULL, NULL);
8570         if (ret) {
8571                 dev_info(&veb->pf->pdev->dev,
8572                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
8573                          ret, veb->pf->hw.aq.asq_last_status);
8574                 return -EPERM;
8575         }
8576         ret = i40e_veb_get_bw_info(veb);
8577         if (ret) {
8578                 dev_info(&veb->pf->pdev->dev,
8579                          "couldn't get VEB bw info, err %d, aq_err %d\n",
8580                          ret, veb->pf->hw.aq.asq_last_status);
8581                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
8582                 return -ENOENT;
8583         }
8584
8585         vsi->uplink_seid = veb->seid;
8586         vsi->veb_idx = veb->idx;
8587         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8588
8589         return 0;
8590 }
8591
8592 /**
8593  * i40e_veb_setup - Set up a VEB
8594  * @pf: board private structure
8595  * @flags: VEB setup flags
8596  * @uplink_seid: the switch element to link to
8597  * @vsi_seid: the initial VSI seid
8598  * @enabled_tc: Enabled TC bit-map
8599  *
8600  * This allocates the sw VEB structure and links it into the switch
8601  * It is possible and legal for this to be a duplicate of an already
8602  * existing VEB.  It is also possible for both uplink and vsi seids
8603  * to be zero, in order to create a floating VEB.
8604  *
8605  * Returns pointer to the successfully allocated VEB sw struct on
8606  * success, otherwise returns NULL on failure.
8607  **/
8608 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
8609                                 u16 uplink_seid, u16 vsi_seid,
8610                                 u8 enabled_tc)
8611 {
8612         struct i40e_veb *veb, *uplink_veb = NULL;
8613         int vsi_idx, veb_idx;
8614         int ret;
8615
8616         /* if one seid is 0, the other must be 0 to create a floating relay */
8617         if ((uplink_seid == 0 || vsi_seid == 0) &&
8618             (uplink_seid + vsi_seid != 0)) {
8619                 dev_info(&pf->pdev->dev,
8620                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
8621                          uplink_seid, vsi_seid);
8622                 return NULL;
8623         }
8624
8625         /* make sure there is such a vsi and uplink */
8626         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
8627                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
8628                         break;
8629         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
8630                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
8631                          vsi_seid);
8632                 return NULL;
8633         }
8634
8635         if (uplink_seid && uplink_seid != pf->mac_seid) {
8636                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
8637                         if (pf->veb[veb_idx] &&
8638                             pf->veb[veb_idx]->seid == uplink_seid) {
8639                                 uplink_veb = pf->veb[veb_idx];
8640                                 break;
8641                         }
8642                 }
8643                 if (!uplink_veb) {
8644                         dev_info(&pf->pdev->dev,
8645                                  "uplink seid %d not found\n", uplink_seid);
8646                         return NULL;
8647                 }
8648         }
8649
8650         /* get veb sw struct */
8651         veb_idx = i40e_veb_mem_alloc(pf);
8652         if (veb_idx < 0)
8653                 goto err_alloc;
8654         veb = pf->veb[veb_idx];
8655         veb->flags = flags;
8656         veb->uplink_seid = uplink_seid;
8657         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
8658         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
8659
8660         /* create the VEB in the switch */
8661         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
8662         if (ret)
8663                 goto err_veb;
8664         if (vsi_idx == pf->lan_vsi)
8665                 pf->lan_veb = veb->idx;
8666
8667         return veb;
8668
8669 err_veb:
8670         i40e_veb_clear(veb);
8671 err_alloc:
8672         return NULL;
8673 }
8674
8675 /**
8676  * i40e_setup_pf_switch_element - set pf vars based on switch type
8677  * @pf: board private structure
8678  * @ele: element we are building info from
8679  * @num_reported: total number of elements
8680  * @printconfig: should we print the contents
8681  *
8682  * helper function to assist in extracting a few useful SEID values.
8683  **/
8684 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
8685                                 struct i40e_aqc_switch_config_element_resp *ele,
8686                                 u16 num_reported, bool printconfig)
8687 {
8688         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
8689         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
8690         u8 element_type = ele->element_type;
8691         u16 seid = le16_to_cpu(ele->seid);
8692
8693         if (printconfig)
8694                 dev_info(&pf->pdev->dev,
8695                          "type=%d seid=%d uplink=%d downlink=%d\n",
8696                          element_type, seid, uplink_seid, downlink_seid);
8697
8698         switch (element_type) {
8699         case I40E_SWITCH_ELEMENT_TYPE_MAC:
8700                 pf->mac_seid = seid;
8701                 break;
8702         case I40E_SWITCH_ELEMENT_TYPE_VEB:
8703                 /* Main VEB? */
8704                 if (uplink_seid != pf->mac_seid)
8705                         break;
8706                 if (pf->lan_veb == I40E_NO_VEB) {
8707                         int v;
8708
8709                         /* find existing or else empty VEB */
8710                         for (v = 0; v < I40E_MAX_VEB; v++) {
8711                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
8712                                         pf->lan_veb = v;
8713                                         break;
8714                                 }
8715                         }
8716                         if (pf->lan_veb == I40E_NO_VEB) {
8717                                 v = i40e_veb_mem_alloc(pf);
8718                                 if (v < 0)
8719                                         break;
8720                                 pf->lan_veb = v;
8721                         }
8722                 }
8723
8724                 pf->veb[pf->lan_veb]->seid = seid;
8725                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
8726                 pf->veb[pf->lan_veb]->pf = pf;
8727                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
8728                 break;
8729         case I40E_SWITCH_ELEMENT_TYPE_VSI:
8730                 if (num_reported != 1)
8731                         break;
8732                 /* This is immediately after a reset so we can assume this is
8733                  * the PF's VSI
8734                  */
8735                 pf->mac_seid = uplink_seid;
8736                 pf->pf_seid = downlink_seid;
8737                 pf->main_vsi_seid = seid;
8738                 if (printconfig)
8739                         dev_info(&pf->pdev->dev,
8740                                  "pf_seid=%d main_vsi_seid=%d\n",
8741                                  pf->pf_seid, pf->main_vsi_seid);
8742                 break;
8743         case I40E_SWITCH_ELEMENT_TYPE_PF:
8744         case I40E_SWITCH_ELEMENT_TYPE_VF:
8745         case I40E_SWITCH_ELEMENT_TYPE_EMP:
8746         case I40E_SWITCH_ELEMENT_TYPE_BMC:
8747         case I40E_SWITCH_ELEMENT_TYPE_PE:
8748         case I40E_SWITCH_ELEMENT_TYPE_PA:
8749                 /* ignore these for now */
8750                 break;
8751         default:
8752                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
8753                          element_type, seid);
8754                 break;
8755         }
8756 }
8757
8758 /**
8759  * i40e_fetch_switch_configuration - Get switch config from firmware
8760  * @pf: board private structure
8761  * @printconfig: should we print the contents
8762  *
8763  * Get the current switch configuration from the device and
8764  * extract a few useful SEID values.
8765  **/
8766 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
8767 {
8768         struct i40e_aqc_get_switch_config_resp *sw_config;
8769         u16 next_seid = 0;
8770         int ret = 0;
8771         u8 *aq_buf;
8772         int i;
8773
8774         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
8775         if (!aq_buf)
8776                 return -ENOMEM;
8777
8778         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
8779         do {
8780                 u16 num_reported, num_total;
8781
8782                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
8783                                                 I40E_AQ_LARGE_BUF,
8784                                                 &next_seid, NULL);
8785                 if (ret) {
8786                         dev_info(&pf->pdev->dev,
8787                                  "get switch config failed %d aq_err=%x\n",
8788                                  ret, pf->hw.aq.asq_last_status);
8789                         kfree(aq_buf);
8790                         return -ENOENT;
8791                 }
8792
8793                 num_reported = le16_to_cpu(sw_config->header.num_reported);
8794                 num_total = le16_to_cpu(sw_config->header.num_total);
8795
8796                 if (printconfig)
8797                         dev_info(&pf->pdev->dev,
8798                                  "header: %d reported %d total\n",
8799                                  num_reported, num_total);
8800
8801                 for (i = 0; i < num_reported; i++) {
8802                         struct i40e_aqc_switch_config_element_resp *ele =
8803                                 &sw_config->element[i];
8804
8805                         i40e_setup_pf_switch_element(pf, ele, num_reported,
8806                                                      printconfig);
8807                 }
8808         } while (next_seid != 0);
8809
8810         kfree(aq_buf);
8811         return ret;
8812 }
8813
8814 /**
8815  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
8816  * @pf: board private structure
8817  * @reinit: if the Main VSI needs to re-initialized.
8818  *
8819  * Returns 0 on success, negative value on failure
8820  **/
8821 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
8822 {
8823         int ret;
8824
8825         /* find out what's out there already */
8826         ret = i40e_fetch_switch_configuration(pf, false);
8827         if (ret) {
8828                 dev_info(&pf->pdev->dev,
8829                          "couldn't fetch switch config, err %d, aq_err %d\n",
8830                          ret, pf->hw.aq.asq_last_status);
8831                 return ret;
8832         }
8833         i40e_pf_reset_stats(pf);
8834
8835         /* first time setup */
8836         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
8837                 struct i40e_vsi *vsi = NULL;
8838                 u16 uplink_seid;
8839
8840                 /* Set up the PF VSI associated with the PF's main VSI
8841                  * that is already in the HW switch
8842                  */
8843                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
8844                         uplink_seid = pf->veb[pf->lan_veb]->seid;
8845                 else
8846                         uplink_seid = pf->mac_seid;
8847                 if (pf->lan_vsi == I40E_NO_VSI)
8848                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
8849                 else if (reinit)
8850                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
8851                 if (!vsi) {
8852                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
8853                         i40e_fdir_teardown(pf);
8854                         return -EAGAIN;
8855                 }
8856         } else {
8857                 /* force a reset of TC and queue layout configurations */
8858                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8859                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8860                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8861                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8862         }
8863         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
8864
8865         i40e_fdir_sb_setup(pf);
8866
8867         /* Setup static PF queue filter control settings */
8868         ret = i40e_setup_pf_filter_control(pf);
8869         if (ret) {
8870                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
8871                          ret);
8872                 /* Failure here should not stop continuing other steps */
8873         }
8874
8875         /* enable RSS in the HW, even for only one queue, as the stack can use
8876          * the hash
8877          */
8878         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
8879                 i40e_config_rss(pf);
8880
8881         /* fill in link information and enable LSE reporting */
8882         i40e_update_link_info(&pf->hw, true);
8883         i40e_link_event(pf);
8884
8885         /* Initialize user-specific link properties */
8886         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8887                                   I40E_AQ_AN_COMPLETED) ? true : false);
8888
8889         /* fill in link information and enable LSE reporting */
8890         i40e_update_link_info(&pf->hw, true);
8891         i40e_link_event(pf);
8892
8893         /* Initialize user-specific link properties */
8894         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8895                                   I40E_AQ_AN_COMPLETED) ? true : false);
8896
8897         i40e_ptp_init(pf);
8898
8899         return ret;
8900 }
8901
8902 /**
8903  * i40e_determine_queue_usage - Work out queue distribution
8904  * @pf: board private structure
8905  **/
8906 static void i40e_determine_queue_usage(struct i40e_pf *pf)
8907 {
8908         int queues_left;
8909
8910         pf->num_lan_qps = 0;
8911 #ifdef I40E_FCOE
8912         pf->num_fcoe_qps = 0;
8913 #endif
8914
8915         /* Find the max queues to be put into basic use.  We'll always be
8916          * using TC0, whether or not DCB is running, and TC0 will get the
8917          * big RSS set.
8918          */
8919         queues_left = pf->hw.func_caps.num_tx_qp;
8920
8921         if ((queues_left == 1) ||
8922             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
8923                 /* one qp for PF, no queues for anything else */
8924                 queues_left = 0;
8925                 pf->rss_size = pf->num_lan_qps = 1;
8926
8927                 /* make sure all the fancies are disabled */
8928                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8929 #ifdef I40E_FCOE
8930                                I40E_FLAG_FCOE_ENABLED   |
8931 #endif
8932                                I40E_FLAG_FD_SB_ENABLED  |
8933                                I40E_FLAG_FD_ATR_ENABLED |
8934                                I40E_FLAG_DCB_CAPABLE    |
8935                                I40E_FLAG_SRIOV_ENABLED  |
8936                                I40E_FLAG_VMDQ_ENABLED);
8937         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
8938                                   I40E_FLAG_FD_SB_ENABLED |
8939                                   I40E_FLAG_FD_ATR_ENABLED |
8940                                   I40E_FLAG_DCB_CAPABLE))) {
8941                 /* one qp for PF */
8942                 pf->rss_size = pf->num_lan_qps = 1;
8943                 queues_left -= pf->num_lan_qps;
8944
8945                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8946 #ifdef I40E_FCOE
8947                                I40E_FLAG_FCOE_ENABLED   |
8948 #endif
8949                                I40E_FLAG_FD_SB_ENABLED  |
8950                                I40E_FLAG_FD_ATR_ENABLED |
8951                                I40E_FLAG_DCB_ENABLED    |
8952                                I40E_FLAG_VMDQ_ENABLED);
8953         } else {
8954                 /* Not enough queues for all TCs */
8955                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
8956                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
8957                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
8958                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
8959                 }
8960                 pf->num_lan_qps = pf->rss_size_max;
8961                 queues_left -= pf->num_lan_qps;
8962         }
8963
8964 #ifdef I40E_FCOE
8965         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
8966                 if (I40E_DEFAULT_FCOE <= queues_left) {
8967                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
8968                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
8969                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
8970                 } else {
8971                         pf->num_fcoe_qps = 0;
8972                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
8973                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
8974                 }
8975
8976                 queues_left -= pf->num_fcoe_qps;
8977         }
8978
8979 #endif
8980         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8981                 if (queues_left > 1) {
8982                         queues_left -= 1; /* save 1 queue for FD */
8983                 } else {
8984                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8985                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
8986                 }
8987         }
8988
8989         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8990             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
8991                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
8992                                         (queues_left / pf->num_vf_qps));
8993                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
8994         }
8995
8996         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
8997             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
8998                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
8999                                           (queues_left / pf->num_vmdq_qps));
9000                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9001         }
9002
9003         pf->queues_left = queues_left;
9004 #ifdef I40E_FCOE
9005         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9006 #endif
9007 }
9008
9009 /**
9010  * i40e_setup_pf_filter_control - Setup PF static filter control
9011  * @pf: PF to be setup
9012  *
9013  * i40e_setup_pf_filter_control sets up a pf's initial filter control
9014  * settings. If PE/FCoE are enabled then it will also set the per PF
9015  * based filter sizes required for them. It also enables Flow director,
9016  * ethertype and macvlan type filter settings for the pf.
9017  *
9018  * Returns 0 on success, negative on failure
9019  **/
9020 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9021 {
9022         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9023
9024         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9025
9026         /* Flow Director is enabled */
9027         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9028                 settings->enable_fdir = true;
9029
9030         /* Ethtype and MACVLAN filters enabled for PF */
9031         settings->enable_ethtype = true;
9032         settings->enable_macvlan = true;
9033
9034         if (i40e_set_filter_control(&pf->hw, settings))
9035                 return -ENOENT;
9036
9037         return 0;
9038 }
9039
9040 #define INFO_STRING_LEN 255
9041 static void i40e_print_features(struct i40e_pf *pf)
9042 {
9043         struct i40e_hw *hw = &pf->hw;
9044         char *buf, *string;
9045
9046         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9047         if (!string) {
9048                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9049                 return;
9050         }
9051
9052         buf = string;
9053
9054         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9055 #ifdef CONFIG_PCI_IOV
9056         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9057 #endif
9058         buf += sprintf(buf, "VSIs: %d QP: %d ", pf->hw.func_caps.num_vsis,
9059                        pf->vsi[pf->lan_vsi]->num_queue_pairs);
9060
9061         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9062                 buf += sprintf(buf, "RSS ");
9063         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9064                 buf += sprintf(buf, "FD_ATR ");
9065         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9066                 buf += sprintf(buf, "FD_SB ");
9067                 buf += sprintf(buf, "NTUPLE ");
9068         }
9069         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9070                 buf += sprintf(buf, "DCB ");
9071         if (pf->flags & I40E_FLAG_PTP)
9072                 buf += sprintf(buf, "PTP ");
9073 #ifdef I40E_FCOE
9074         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9075                 buf += sprintf(buf, "FCOE ");
9076 #endif
9077
9078         BUG_ON(buf > (string + INFO_STRING_LEN));
9079         dev_info(&pf->pdev->dev, "%s\n", string);
9080         kfree(string);
9081 }
9082
9083 /**
9084  * i40e_probe - Device initialization routine
9085  * @pdev: PCI device information struct
9086  * @ent: entry in i40e_pci_tbl
9087  *
9088  * i40e_probe initializes a pf identified by a pci_dev structure.
9089  * The OS initialization, configuring of the pf private structure,
9090  * and a hardware reset occur.
9091  *
9092  * Returns 0 on success, negative on failure
9093  **/
9094 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9095 {
9096         struct i40e_pf *pf;
9097         struct i40e_hw *hw;
9098         static u16 pfs_found;
9099         u16 link_status;
9100         int err = 0;
9101         u32 len;
9102         u32 i;
9103
9104         err = pci_enable_device_mem(pdev);
9105         if (err)
9106                 return err;
9107
9108         /* set up for high or low dma */
9109         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9110         if (err) {
9111                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9112                 if (err) {
9113                         dev_err(&pdev->dev,
9114                                 "DMA configuration failed: 0x%x\n", err);
9115                         goto err_dma;
9116                 }
9117         }
9118
9119         /* set up pci connections */
9120         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9121                                            IORESOURCE_MEM), i40e_driver_name);
9122         if (err) {
9123                 dev_info(&pdev->dev,
9124                          "pci_request_selected_regions failed %d\n", err);
9125                 goto err_pci_reg;
9126         }
9127
9128         pci_enable_pcie_error_reporting(pdev);
9129         pci_set_master(pdev);
9130
9131         /* Now that we have a PCI connection, we need to do the
9132          * low level device setup.  This is primarily setting up
9133          * the Admin Queue structures and then querying for the
9134          * device's current profile information.
9135          */
9136         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9137         if (!pf) {
9138                 err = -ENOMEM;
9139                 goto err_pf_alloc;
9140         }
9141         pf->next_vsi = 0;
9142         pf->pdev = pdev;
9143         set_bit(__I40E_DOWN, &pf->state);
9144
9145         hw = &pf->hw;
9146         hw->back = pf;
9147         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
9148                               pci_resource_len(pdev, 0));
9149         if (!hw->hw_addr) {
9150                 err = -EIO;
9151                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9152                          (unsigned int)pci_resource_start(pdev, 0),
9153                          (unsigned int)pci_resource_len(pdev, 0), err);
9154                 goto err_ioremap;
9155         }
9156         hw->vendor_id = pdev->vendor;
9157         hw->device_id = pdev->device;
9158         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
9159         hw->subsystem_vendor_id = pdev->subsystem_vendor;
9160         hw->subsystem_device_id = pdev->subsystem_device;
9161         hw->bus.device = PCI_SLOT(pdev->devfn);
9162         hw->bus.func = PCI_FUNC(pdev->devfn);
9163         pf->instance = pfs_found;
9164
9165         if (debug != -1) {
9166                 pf->msg_enable = pf->hw.debug_mask;
9167                 pf->msg_enable = debug;
9168         }
9169
9170         /* do a special CORER for clearing PXE mode once at init */
9171         if (hw->revision_id == 0 &&
9172             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
9173                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
9174                 i40e_flush(hw);
9175                 msleep(200);
9176                 pf->corer_count++;
9177
9178                 i40e_clear_pxe_mode(hw);
9179         }
9180
9181         /* Reset here to make sure all is clean and to define PF 'n' */
9182         i40e_clear_hw(hw);
9183         err = i40e_pf_reset(hw);
9184         if (err) {
9185                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
9186                 goto err_pf_reset;
9187         }
9188         pf->pfr_count++;
9189
9190         hw->aq.num_arq_entries = I40E_AQ_LEN;
9191         hw->aq.num_asq_entries = I40E_AQ_LEN;
9192         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9193         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9194         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
9195         snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
9196                  "%s-pf%d:misc",
9197                  dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
9198
9199         err = i40e_init_shared_code(hw);
9200         if (err) {
9201                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
9202                 goto err_pf_reset;
9203         }
9204
9205         /* set up a default setting for link flow control */
9206         pf->hw.fc.requested_mode = I40E_FC_NONE;
9207
9208         err = i40e_init_adminq(hw);
9209         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
9210         if (err) {
9211                 dev_info(&pdev->dev,
9212                          "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");
9213                 goto err_pf_reset;
9214         }
9215
9216         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
9217             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
9218                 dev_info(&pdev->dev,
9219                          "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");
9220         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
9221                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
9222                 dev_info(&pdev->dev,
9223                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
9224
9225
9226         i40e_verify_eeprom(pf);
9227
9228         /* Rev 0 hardware was never productized */
9229         if (hw->revision_id < 1)
9230                 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");
9231
9232         i40e_clear_pxe_mode(hw);
9233         err = i40e_get_capabilities(pf);
9234         if (err)
9235                 goto err_adminq_setup;
9236
9237         err = i40e_sw_init(pf);
9238         if (err) {
9239                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
9240                 goto err_sw_init;
9241         }
9242
9243         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
9244                                 hw->func_caps.num_rx_qp,
9245                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
9246         if (err) {
9247                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
9248                 goto err_init_lan_hmc;
9249         }
9250
9251         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
9252         if (err) {
9253                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
9254                 err = -ENOENT;
9255                 goto err_configure_lan_hmc;
9256         }
9257
9258         i40e_get_mac_addr(hw, hw->mac.addr);
9259         if (!is_valid_ether_addr(hw->mac.addr)) {
9260                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
9261                 err = -EIO;
9262                 goto err_mac_addr;
9263         }
9264         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
9265         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
9266         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
9267         if (is_valid_ether_addr(hw->mac.port_addr))
9268                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
9269 #ifdef I40E_FCOE
9270         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
9271         if (err)
9272                 dev_info(&pdev->dev,
9273                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
9274         if (!is_valid_ether_addr(hw->mac.san_addr)) {
9275                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
9276                          hw->mac.san_addr);
9277                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
9278         }
9279         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
9280 #endif /* I40E_FCOE */
9281
9282         pci_set_drvdata(pdev, pf);
9283         pci_save_state(pdev);
9284 #ifdef CONFIG_I40E_DCB
9285         err = i40e_init_pf_dcb(pf);
9286         if (err) {
9287                 dev_info(&pdev->dev, "init_pf_dcb failed: %d\n", err);
9288                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9289                 /* Continue without DCB enabled */
9290         }
9291 #endif /* CONFIG_I40E_DCB */
9292
9293         /* set up periodic task facility */
9294         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
9295         pf->service_timer_period = HZ;
9296
9297         INIT_WORK(&pf->service_task, i40e_service_task);
9298         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
9299         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
9300         pf->link_check_timeout = jiffies;
9301
9302         /* WoL defaults to disabled */
9303         pf->wol_en = false;
9304         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
9305
9306         /* set up the main switch operations */
9307         i40e_determine_queue_usage(pf);
9308         i40e_init_interrupt_scheme(pf);
9309
9310         /* The number of VSIs reported by the FW is the minimum guaranteed
9311          * to us; HW supports far more and we share the remaining pool with
9312          * the other PFs. We allocate space for more than the guarantee with
9313          * the understanding that we might not get them all later.
9314          */
9315         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
9316                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
9317         else
9318                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
9319
9320         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
9321         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
9322         pf->vsi = kzalloc(len, GFP_KERNEL);
9323         if (!pf->vsi) {
9324                 err = -ENOMEM;
9325                 goto err_switch_setup;
9326         }
9327
9328         err = i40e_setup_pf_switch(pf, false);
9329         if (err) {
9330                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
9331                 goto err_vsis;
9332         }
9333         /* if FDIR VSI was set up, start it now */
9334         for (i = 0; i < pf->num_alloc_vsi; i++) {
9335                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
9336                         i40e_vsi_open(pf->vsi[i]);
9337                         break;
9338                 }
9339         }
9340
9341         /* driver is only interested in link up/down and module qualification
9342          * reports from firmware
9343          */
9344         err = i40e_aq_set_phy_int_mask(&pf->hw,
9345                                        I40E_AQ_EVENT_LINK_UPDOWN |
9346                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
9347         if (err)
9348                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", err);
9349
9350         msleep(75);
9351         err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
9352         if (err) {
9353                 dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
9354                          pf->hw.aq.asq_last_status);
9355         }
9356
9357         /* The main driver is (mostly) up and happy. We need to set this state
9358          * before setting up the misc vector or we get a race and the vector
9359          * ends up disabled forever.
9360          */
9361         clear_bit(__I40E_DOWN, &pf->state);
9362
9363         /* In case of MSIX we are going to setup the misc vector right here
9364          * to handle admin queue events etc. In case of legacy and MSI
9365          * the misc functionality and queue processing is combined in
9366          * the same vector and that gets setup at open.
9367          */
9368         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9369                 err = i40e_setup_misc_vector(pf);
9370                 if (err) {
9371                         dev_info(&pdev->dev,
9372                                  "setup of misc vector failed: %d\n", err);
9373                         goto err_vsis;
9374                 }
9375         }
9376
9377 #ifdef CONFIG_PCI_IOV
9378         /* prep for VF support */
9379         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9380             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
9381             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
9382                 u32 val;
9383
9384                 /* disable link interrupts for VFs */
9385                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
9386                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
9387                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
9388                 i40e_flush(hw);
9389
9390                 if (pci_num_vf(pdev)) {
9391                         dev_info(&pdev->dev,
9392                                  "Active VFs found, allocating resources.\n");
9393                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
9394                         if (err)
9395                                 dev_info(&pdev->dev,
9396                                          "Error %d allocating resources for existing VFs\n",
9397                                          err);
9398                 }
9399         }
9400 #endif /* CONFIG_PCI_IOV */
9401
9402         pfs_found++;
9403
9404         i40e_dbg_pf_init(pf);
9405
9406         /* tell the firmware that we're starting */
9407         i40e_send_version(pf);
9408
9409         /* since everything's happy, start the service_task timer */
9410         mod_timer(&pf->service_timer,
9411                   round_jiffies(jiffies + pf->service_timer_period));
9412
9413 #ifdef I40E_FCOE
9414         /* create FCoE interface */
9415         i40e_fcoe_vsi_setup(pf);
9416
9417 #endif
9418         /* Get the negotiated link width and speed from PCI config space */
9419         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
9420
9421         i40e_set_pci_config_data(hw, link_status);
9422
9423         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
9424                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
9425                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
9426                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
9427                  "Unknown"),
9428                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
9429                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
9430                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
9431                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
9432                  "Unknown"));
9433
9434         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
9435             hw->bus.speed < i40e_bus_speed_8000) {
9436                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
9437                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
9438         }
9439
9440         /* print a string summarizing features */
9441         i40e_print_features(pf);
9442
9443         return 0;
9444
9445         /* Unwind what we've done if something failed in the setup */
9446 err_vsis:
9447         set_bit(__I40E_DOWN, &pf->state);
9448         i40e_clear_interrupt_scheme(pf);
9449         kfree(pf->vsi);
9450 err_switch_setup:
9451         i40e_reset_interrupt_capability(pf);
9452         del_timer_sync(&pf->service_timer);
9453 err_mac_addr:
9454 err_configure_lan_hmc:
9455         (void)i40e_shutdown_lan_hmc(hw);
9456 err_init_lan_hmc:
9457         kfree(pf->qp_pile);
9458         kfree(pf->irq_pile);
9459 err_sw_init:
9460 err_adminq_setup:
9461         (void)i40e_shutdown_adminq(hw);
9462 err_pf_reset:
9463         iounmap(hw->hw_addr);
9464 err_ioremap:
9465         kfree(pf);
9466 err_pf_alloc:
9467         pci_disable_pcie_error_reporting(pdev);
9468         pci_release_selected_regions(pdev,
9469                                      pci_select_bars(pdev, IORESOURCE_MEM));
9470 err_pci_reg:
9471 err_dma:
9472         pci_disable_device(pdev);
9473         return err;
9474 }
9475
9476 /**
9477  * i40e_remove - Device removal routine
9478  * @pdev: PCI device information struct
9479  *
9480  * i40e_remove is called by the PCI subsystem to alert the driver
9481  * that is should release a PCI device.  This could be caused by a
9482  * Hot-Plug event, or because the driver is going to be removed from
9483  * memory.
9484  **/
9485 static void i40e_remove(struct pci_dev *pdev)
9486 {
9487         struct i40e_pf *pf = pci_get_drvdata(pdev);
9488         i40e_status ret_code;
9489         int i;
9490
9491         i40e_dbg_pf_exit(pf);
9492
9493         i40e_ptp_stop(pf);
9494
9495         /* no more scheduling of any task */
9496         set_bit(__I40E_DOWN, &pf->state);
9497         del_timer_sync(&pf->service_timer);
9498         cancel_work_sync(&pf->service_task);
9499
9500         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
9501                 i40e_free_vfs(pf);
9502                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
9503         }
9504
9505         i40e_fdir_teardown(pf);
9506
9507         /* If there is a switch structure or any orphans, remove them.
9508          * This will leave only the PF's VSI remaining.
9509          */
9510         for (i = 0; i < I40E_MAX_VEB; i++) {
9511                 if (!pf->veb[i])
9512                         continue;
9513
9514                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
9515                     pf->veb[i]->uplink_seid == 0)
9516                         i40e_switch_branch_release(pf->veb[i]);
9517         }
9518
9519         /* Now we can shutdown the PF's VSI, just before we kill
9520          * adminq and hmc.
9521          */
9522         if (pf->vsi[pf->lan_vsi])
9523                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
9524
9525         i40e_stop_misc_vector(pf);
9526         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9527                 synchronize_irq(pf->msix_entries[0].vector);
9528                 free_irq(pf->msix_entries[0].vector, pf);
9529         }
9530
9531         /* shutdown and destroy the HMC */
9532         if (pf->hw.hmc.hmc_obj) {
9533                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
9534                 if (ret_code)
9535                         dev_warn(&pdev->dev,
9536                                  "Failed to destroy the HMC resources: %d\n",
9537                                  ret_code);
9538         }
9539
9540         /* shutdown the adminq */
9541         ret_code = i40e_shutdown_adminq(&pf->hw);
9542         if (ret_code)
9543                 dev_warn(&pdev->dev,
9544                          "Failed to destroy the Admin Queue resources: %d\n",
9545                          ret_code);
9546
9547         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
9548         i40e_clear_interrupt_scheme(pf);
9549         for (i = 0; i < pf->num_alloc_vsi; i++) {
9550                 if (pf->vsi[i]) {
9551                         i40e_vsi_clear_rings(pf->vsi[i]);
9552                         i40e_vsi_clear(pf->vsi[i]);
9553                         pf->vsi[i] = NULL;
9554                 }
9555         }
9556
9557         for (i = 0; i < I40E_MAX_VEB; i++) {
9558                 kfree(pf->veb[i]);
9559                 pf->veb[i] = NULL;
9560         }
9561
9562         kfree(pf->qp_pile);
9563         kfree(pf->irq_pile);
9564         kfree(pf->vsi);
9565
9566         iounmap(pf->hw.hw_addr);
9567         kfree(pf);
9568         pci_release_selected_regions(pdev,
9569                                      pci_select_bars(pdev, IORESOURCE_MEM));
9570
9571         pci_disable_pcie_error_reporting(pdev);
9572         pci_disable_device(pdev);
9573 }
9574
9575 /**
9576  * i40e_pci_error_detected - warning that something funky happened in PCI land
9577  * @pdev: PCI device information struct
9578  *
9579  * Called to warn that something happened and the error handling steps
9580  * are in progress.  Allows the driver to quiesce things, be ready for
9581  * remediation.
9582  **/
9583 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
9584                                                 enum pci_channel_state error)
9585 {
9586         struct i40e_pf *pf = pci_get_drvdata(pdev);
9587
9588         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
9589
9590         /* shutdown all operations */
9591         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
9592                 rtnl_lock();
9593                 i40e_prep_for_reset(pf);
9594                 rtnl_unlock();
9595         }
9596
9597         /* Request a slot reset */
9598         return PCI_ERS_RESULT_NEED_RESET;
9599 }
9600
9601 /**
9602  * i40e_pci_error_slot_reset - a PCI slot reset just happened
9603  * @pdev: PCI device information struct
9604  *
9605  * Called to find if the driver can work with the device now that
9606  * the pci slot has been reset.  If a basic connection seems good
9607  * (registers are readable and have sane content) then return a
9608  * happy little PCI_ERS_RESULT_xxx.
9609  **/
9610 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
9611 {
9612         struct i40e_pf *pf = pci_get_drvdata(pdev);
9613         pci_ers_result_t result;
9614         int err;
9615         u32 reg;
9616
9617         dev_info(&pdev->dev, "%s\n", __func__);
9618         if (pci_enable_device_mem(pdev)) {
9619                 dev_info(&pdev->dev,
9620                          "Cannot re-enable PCI device after reset.\n");
9621                 result = PCI_ERS_RESULT_DISCONNECT;
9622         } else {
9623                 pci_set_master(pdev);
9624                 pci_restore_state(pdev);
9625                 pci_save_state(pdev);
9626                 pci_wake_from_d3(pdev, false);
9627
9628                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
9629                 if (reg == 0)
9630                         result = PCI_ERS_RESULT_RECOVERED;
9631                 else
9632                         result = PCI_ERS_RESULT_DISCONNECT;
9633         }
9634
9635         err = pci_cleanup_aer_uncorrect_error_status(pdev);
9636         if (err) {
9637                 dev_info(&pdev->dev,
9638                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
9639                          err);
9640                 /* non-fatal, continue */
9641         }
9642
9643         return result;
9644 }
9645
9646 /**
9647  * i40e_pci_error_resume - restart operations after PCI error recovery
9648  * @pdev: PCI device information struct
9649  *
9650  * Called to allow the driver to bring things back up after PCI error
9651  * and/or reset recovery has finished.
9652  **/
9653 static void i40e_pci_error_resume(struct pci_dev *pdev)
9654 {
9655         struct i40e_pf *pf = pci_get_drvdata(pdev);
9656
9657         dev_info(&pdev->dev, "%s\n", __func__);
9658         if (test_bit(__I40E_SUSPENDED, &pf->state))
9659                 return;
9660
9661         rtnl_lock();
9662         i40e_handle_reset_warning(pf);
9663         rtnl_lock();
9664 }
9665
9666 /**
9667  * i40e_shutdown - PCI callback for shutting down
9668  * @pdev: PCI device information struct
9669  **/
9670 static void i40e_shutdown(struct pci_dev *pdev)
9671 {
9672         struct i40e_pf *pf = pci_get_drvdata(pdev);
9673         struct i40e_hw *hw = &pf->hw;
9674
9675         set_bit(__I40E_SUSPENDED, &pf->state);
9676         set_bit(__I40E_DOWN, &pf->state);
9677         rtnl_lock();
9678         i40e_prep_for_reset(pf);
9679         rtnl_unlock();
9680
9681         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9682         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9683
9684         if (system_state == SYSTEM_POWER_OFF) {
9685                 pci_wake_from_d3(pdev, pf->wol_en);
9686                 pci_set_power_state(pdev, PCI_D3hot);
9687         }
9688 }
9689
9690 #ifdef CONFIG_PM
9691 /**
9692  * i40e_suspend - PCI callback for moving to D3
9693  * @pdev: PCI device information struct
9694  **/
9695 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
9696 {
9697         struct i40e_pf *pf = pci_get_drvdata(pdev);
9698         struct i40e_hw *hw = &pf->hw;
9699
9700         set_bit(__I40E_SUSPENDED, &pf->state);
9701         set_bit(__I40E_DOWN, &pf->state);
9702         rtnl_lock();
9703         i40e_prep_for_reset(pf);
9704         rtnl_unlock();
9705
9706         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9707         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9708
9709         pci_wake_from_d3(pdev, pf->wol_en);
9710         pci_set_power_state(pdev, PCI_D3hot);
9711
9712         return 0;
9713 }
9714
9715 /**
9716  * i40e_resume - PCI callback for waking up from D3
9717  * @pdev: PCI device information struct
9718  **/
9719 static int i40e_resume(struct pci_dev *pdev)
9720 {
9721         struct i40e_pf *pf = pci_get_drvdata(pdev);
9722         u32 err;
9723
9724         pci_set_power_state(pdev, PCI_D0);
9725         pci_restore_state(pdev);
9726         /* pci_restore_state() clears dev->state_saves, so
9727          * call pci_save_state() again to restore it.
9728          */
9729         pci_save_state(pdev);
9730
9731         err = pci_enable_device_mem(pdev);
9732         if (err) {
9733                 dev_err(&pdev->dev,
9734                         "%s: Cannot enable PCI device from suspend\n",
9735                         __func__);
9736                 return err;
9737         }
9738         pci_set_master(pdev);
9739
9740         /* no wakeup events while running */
9741         pci_wake_from_d3(pdev, false);
9742
9743         /* handling the reset will rebuild the device state */
9744         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
9745                 clear_bit(__I40E_DOWN, &pf->state);
9746                 rtnl_lock();
9747                 i40e_reset_and_rebuild(pf, false);
9748                 rtnl_unlock();
9749         }
9750
9751         return 0;
9752 }
9753
9754 #endif
9755 static const struct pci_error_handlers i40e_err_handler = {
9756         .error_detected = i40e_pci_error_detected,
9757         .slot_reset = i40e_pci_error_slot_reset,
9758         .resume = i40e_pci_error_resume,
9759 };
9760
9761 static struct pci_driver i40e_driver = {
9762         .name     = i40e_driver_name,
9763         .id_table = i40e_pci_tbl,
9764         .probe    = i40e_probe,
9765         .remove   = i40e_remove,
9766 #ifdef CONFIG_PM
9767         .suspend  = i40e_suspend,
9768         .resume   = i40e_resume,
9769 #endif
9770         .shutdown = i40e_shutdown,
9771         .err_handler = &i40e_err_handler,
9772         .sriov_configure = i40e_pci_sriov_configure,
9773 };
9774
9775 /**
9776  * i40e_init_module - Driver registration routine
9777  *
9778  * i40e_init_module is the first routine called when the driver is
9779  * loaded. All it does is register with the PCI subsystem.
9780  **/
9781 static int __init i40e_init_module(void)
9782 {
9783         pr_info("%s: %s - version %s\n", i40e_driver_name,
9784                 i40e_driver_string, i40e_driver_version_str);
9785         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
9786         i40e_dbg_init();
9787         return pci_register_driver(&i40e_driver);
9788 }
9789 module_init(i40e_init_module);
9790
9791 /**
9792  * i40e_exit_module - Driver exit cleanup routine
9793  *
9794  * i40e_exit_module is called just before the driver is removed
9795  * from memory.
9796  **/
9797 static void __exit i40e_exit_module(void)
9798 {
9799         pci_unregister_driver(&i40e_driver);
9800         i40e_dbg_exit();
9801 }
9802 module_exit(i40e_exit_module);