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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2015 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 /* Local includes */
  28 #include "i40e.h"
  29 #include "i40e_diag.h"
  30 #ifdef CONFIG_I40E_VXLAN
  31 #include <net/vxlan.h>
  32 #endif
  33
  34 const char i40e_driver_name[] = "i40e";
  35 static const char i40e_driver_string[] =
  36                         "Intel(R) Ethernet Connection XL710 Network Driver";
  37
  38 #define DRV_KERN "-k"
  39
  40 #define DRV_VERSION_MAJOR 1
  41 #define DRV_VERSION_MINOR 3
  42 #define DRV_VERSION_BUILD 6
  43 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  44              __stringify(DRV_VERSION_MINOR) "." \
  45              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  46 const char i40e_driver_version_str[] = DRV_VERSION;
  47 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  48
  49 /* a bit of forward declarations */
  50 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  51 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  52 static int i40e_add_vsi(struct i40e_vsi *vsi);
  53 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  54 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  55 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  56 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  57 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  58 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  59 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  60
  61 /* i40e_pci_tbl - PCI Device ID Table
  62  *
  63  * Last entry must be all 0s
  64  *
  65  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  66  *   Class, Class Mask, private data (not used) }
  67  */
  68 static const struct pci_device_id i40e_pci_tbl[] = {
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  82         /* required last entry */
  83         {0, }
  84 };
  85 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  86
  87 #define I40E_MAX_VF_COUNT 128
  88 static int debug = -1;
  89 module_param(debug, int, 0);
  90 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  91
  92 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  93 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  94 MODULE_LICENSE("GPL");
  95 MODULE_VERSION(DRV_VERSION);
  96
  97 /**
  98  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  99  * @hw:   pointer to the HW structure
 100  * @mem:  ptr to mem struct to fill out
 101  * @size: size of memory requested
 102  * @alignment: what to align the allocation to
 103  **/
 104 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 105                             u64 size, u32 alignment)
 106 {
 107         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 108
 109         mem->size = ALIGN(size, alignment);
 110         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 111                                       &mem->pa, GFP_KERNEL);
 112         if (!mem->va)
 113                 return -ENOMEM;
 114
 115         return 0;
 116 }
 117
 118 /**
 119  * i40e_free_dma_mem_d - OS specific memory free for shared code
 120  * @hw:   pointer to the HW structure
 121  * @mem:  ptr to mem struct to free
 122  **/
 123 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 124 {
 125         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 126
 127         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 128         mem->va = NULL;
 129         mem->pa = 0;
 130         mem->size = 0;
 131
 132         return 0;
 133 }
 134
 135 /**
 136  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 137  * @hw:   pointer to the HW structure
 138  * @mem:  ptr to mem struct to fill out
 139  * @size: size of memory requested
 140  **/
 141 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 142                              u32 size)
 143 {
 144         mem->size = size;
 145         mem->va = kzalloc(size, GFP_KERNEL);
 146
 147         if (!mem->va)
 148                 return -ENOMEM;
 149
 150         return 0;
 151 }
 152
 153 /**
 154  * i40e_free_virt_mem_d - OS specific memory free for shared code
 155  * @hw:   pointer to the HW structure
 156  * @mem:  ptr to mem struct to free
 157  **/
 158 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 159 {
 160         /* it's ok to kfree a NULL pointer */
 161         kfree(mem->va);
 162         mem->va = NULL;
 163         mem->size = 0;
 164
 165         return 0;
 166 }
 167
 168 /**
 169  * i40e_get_lump - find a lump of free generic resource
 170  * @pf: board private structure
 171  * @pile: the pile of resource to search
 172  * @needed: the number of items needed
 173  * @id: an owner id to stick on the items assigned
 174  *
 175  * Returns the base item index of the lump, or negative for error
 176  *
 177  * The search_hint trick and lack of advanced fit-finding only work
 178  * because we're highly likely to have all the same size lump requests.
 179  * Linear search time and any fragmentation should be minimal.
 180  **/
 181 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 182                          u16 needed, u16 id)
 183 {
 184         int ret = -ENOMEM;
 185         int i, j;
 186
 187         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 188                 dev_info(&pf->pdev->dev,
 189                          "param err: pile=%p needed=%d id=0x%04x\n",
 190                          pile, needed, id);
 191                 return -EINVAL;
 192         }
 193
 194         /* start the linear search with an imperfect hint */
 195         i = pile->search_hint;
 196         while (i < pile->num_entries) {
 197                 /* skip already allocated entries */
 198                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 199                         i++;
 200                         continue;
 201                 }
 202
 203                 /* do we have enough in this lump? */
 204                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 205                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 206                                 break;
 207                 }
 208
 209                 if (j == needed) {
 210                         /* there was enough, so assign it to the requestor */
 211                         for (j = 0; j < needed; j++)
 212                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 213                         ret = i;
 214                         pile->search_hint = i + j;
 215                         break;
 216                 } else {
 217                         /* not enough, so skip over it and continue looking */
 218                         i += j;
 219                 }
 220         }
 221
 222         return ret;
 223 }
 224
 225 /**
 226  * i40e_put_lump - return a lump of generic resource
 227  * @pile: the pile of resource to search
 228  * @index: the base item index
 229  * @id: the owner id of the items assigned
 230  *
 231  * Returns the count of items in the lump
 232  **/
 233 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 234 {
 235         int valid_id = (id | I40E_PILE_VALID_BIT);
 236         int count = 0;
 237         int i;
 238
 239         if (!pile || index >= pile->num_entries)
 240                 return -EINVAL;
 241
 242         for (i = index;
 243              i < pile->num_entries && pile->list[i] == valid_id;
 244              i++) {
 245                 pile->list[i] = 0;
 246                 count++;
 247         }
 248
 249         if (count && index < pile->search_hint)
 250                 pile->search_hint = index;
 251
 252         return count;
 253 }
 254
 255 /**
 256  * i40e_find_vsi_from_id - searches for the vsi with the given id
 257  * @pf - the pf structure to search for the vsi
 258  * @id - id of the vsi it is searching for
 259  **/
 260 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 261 {
 262         int i;
 263
 264         for (i = 0; i < pf->num_alloc_vsi; i++)
 265                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 266                         return pf->vsi[i];
 267
 268         return NULL;
 269 }
 270
 271 /**
 272  * i40e_service_event_schedule - Schedule the service task to wake up
 273  * @pf: board private structure
 274  *
 275  * If not already scheduled, this puts the task into the work queue
 276  **/
 277 static void i40e_service_event_schedule(struct i40e_pf *pf)
 278 {
 279         if (!test_bit(__I40E_DOWN, &pf->state) &&
 280             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 281             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 282                 schedule_work(&pf->service_task);
 283 }
 284
 285 /**
 286  * i40e_tx_timeout - Respond to a Tx Hang
 287  * @netdev: network interface device structure
 288  *
 289  * If any port has noticed a Tx timeout, it is likely that the whole
 290  * device is munged, not just the one netdev port, so go for the full
 291  * reset.
 292  **/
 293 #ifdef I40E_FCOE
 294 void i40e_tx_timeout(struct net_device *netdev)
 295 #else
 296 static void i40e_tx_timeout(struct net_device *netdev)
 297 #endif
 298 {
 299         struct i40e_netdev_priv *np = netdev_priv(netdev);
 300         struct i40e_vsi *vsi = np->vsi;
 301         struct i40e_pf *pf = vsi->back;
 302
 303         pf->tx_timeout_count++;
 304
 305         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 306                 pf->tx_timeout_recovery_level = 1;
 307         pf->tx_timeout_last_recovery = jiffies;
 308         netdev_info(netdev, "tx_timeout recovery level %d\n",
 309                     pf->tx_timeout_recovery_level);
 310
 311         switch (pf->tx_timeout_recovery_level) {
 312         case 0:
 313                 /* disable and re-enable queues for the VSI */
 314                 if (in_interrupt()) {
 315                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 316                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 317                 } else {
 318                         i40e_vsi_reinit_locked(vsi);
 319                 }
 320                 break;
 321         case 1:
 322                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 323                 break;
 324         case 2:
 325                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 326                 break;
 327         case 3:
 328                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 329                 break;
 330         default:
 331                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 332                 set_bit(__I40E_DOWN_REQUESTED, &pf->state);
 333                 set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
 334                 break;
 335         }
 336         i40e_service_event_schedule(pf);
 337         pf->tx_timeout_recovery_level++;
 338 }
 339
 340 /**
 341  * i40e_release_rx_desc - Store the new tail and head values
 342  * @rx_ring: ring to bump
 343  * @val: new head index
 344  **/
 345 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 346 {
 347         rx_ring->next_to_use = val;
 348
 349         /* Force memory writes to complete before letting h/w
 350          * know there are new descriptors to fetch.  (Only
 351          * applicable for weak-ordered memory model archs,
 352          * such as IA-64).
 353          */
 354         wmb();
 355         writel(val, rx_ring->tail);
 356 }
 357
 358 /**
 359  * i40e_get_vsi_stats_struct - Get System Network Statistics
 360  * @vsi: the VSI we care about
 361  *
 362  * Returns the address of the device statistics structure.
 363  * The statistics are actually updated from the service task.
 364  **/
 365 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 366 {
 367         return &vsi->net_stats;
 368 }
 369
 370 /**
 371  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 372  * @netdev: network interface device structure
 373  *
 374  * Returns the address of the device statistics structure.
 375  * The statistics are actually updated from the service task.
 376  **/
 377 #ifdef I40E_FCOE
 378 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 379                                              struct net_device *netdev,
 380                                              struct rtnl_link_stats64 *stats)
 381 #else
 382 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 383                                              struct net_device *netdev,
 384                                              struct rtnl_link_stats64 *stats)
 385 #endif
 386 {
 387         struct i40e_netdev_priv *np = netdev_priv(netdev);
 388         struct i40e_ring *tx_ring, *rx_ring;
 389         struct i40e_vsi *vsi = np->vsi;
 390         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 391         int i;
 392
 393         if (test_bit(__I40E_DOWN, &vsi->state))
 394                 return stats;
 395
 396         if (!vsi->tx_rings)
 397                 return stats;
 398
 399         rcu_read_lock();
 400         for (i = 0; i < vsi->num_queue_pairs; i++) {
 401                 u64 bytes, packets;
 402                 unsigned int start;
 403
 404                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 405                 if (!tx_ring)
 406                         continue;
 407
 408                 do {
 409                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 410                         packets = tx_ring->stats.packets;
 411                         bytes   = tx_ring->stats.bytes;
 412                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 413
 414                 stats->tx_packets += packets;
 415                 stats->tx_bytes   += bytes;
 416                 rx_ring = &tx_ring[1];
 417
 418                 do {
 419                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 420                         packets = rx_ring->stats.packets;
 421                         bytes   = rx_ring->stats.bytes;
 422                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 423
 424                 stats->rx_packets += packets;
 425                 stats->rx_bytes   += bytes;
 426         }
 427         rcu_read_unlock();
 428
 429         /* following stats updated by i40e_watchdog_subtask() */
 430         stats->multicast        = vsi_stats->multicast;
 431         stats->tx_errors        = vsi_stats->tx_errors;
 432         stats->tx_dropped       = vsi_stats->tx_dropped;
 433         stats->rx_errors        = vsi_stats->rx_errors;
 434         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 435         stats->rx_length_errors = vsi_stats->rx_length_errors;
 436
 437         return stats;
 438 }
 439
 440 /**
 441  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 442  * @vsi: the VSI to have its stats reset
 443  **/
 444 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 445 {
 446         struct rtnl_link_stats64 *ns;
 447         int i;
 448
 449         if (!vsi)
 450                 return;
 451
 452         ns = i40e_get_vsi_stats_struct(vsi);
 453         memset(ns, 0, sizeof(*ns));
 454         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 455         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 456         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 457         if (vsi->rx_rings && vsi->rx_rings[0]) {
 458                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 459                         memset(&vsi->rx_rings[i]->stats, 0 ,
 460                                sizeof(vsi->rx_rings[i]->stats));
 461                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 462                                sizeof(vsi->rx_rings[i]->rx_stats));
 463                         memset(&vsi->tx_rings[i]->stats, 0 ,
 464                                sizeof(vsi->tx_rings[i]->stats));
 465                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 466                                sizeof(vsi->tx_rings[i]->tx_stats));
 467                 }
 468         }
 469         vsi->stat_offsets_loaded = false;
 470 }
 471
 472 /**
 473  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 474  * @pf: the PF to be reset
 475  **/
 476 void i40e_pf_reset_stats(struct i40e_pf *pf)
 477 {
 478         int i;
 479
 480         memset(&pf->stats, 0, sizeof(pf->stats));
 481         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 482         pf->stat_offsets_loaded = false;
 483
 484         for (i = 0; i < I40E_MAX_VEB; i++) {
 485                 if (pf->veb[i]) {
 486                         memset(&pf->veb[i]->stats, 0,
 487                                sizeof(pf->veb[i]->stats));
 488                         memset(&pf->veb[i]->stats_offsets, 0,
 489                                sizeof(pf->veb[i]->stats_offsets));
 490                         pf->veb[i]->stat_offsets_loaded = false;
 491                 }
 492         }
 493 }
 494
 495 /**
 496  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 497  * @hw: ptr to the hardware info
 498  * @hireg: the high 32 bit reg to read
 499  * @loreg: the low 32 bit reg to read
 500  * @offset_loaded: has the initial offset been loaded yet
 501  * @offset: ptr to current offset value
 502  * @stat: ptr to the stat
 503  *
 504  * Since the device stats are not reset at PFReset, they likely will not
 505  * be zeroed when the driver starts.  We'll save the first values read
 506  * and use them as offsets to be subtracted from the raw values in order
 507  * to report stats that count from zero.  In the process, we also manage
 508  * the potential roll-over.
 509  **/
 510 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 511                                bool offset_loaded, u64 *offset, u64 *stat)
 512 {
 513         u64 new_data;
 514
 515         if (hw->device_id == I40E_DEV_ID_QEMU) {
 516                 new_data = rd32(hw, loreg);
 517                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 518         } else {
 519                 new_data = rd64(hw, loreg);
 520         }
 521         if (!offset_loaded)
 522                 *offset = new_data;
 523         if (likely(new_data >= *offset))
 524                 *stat = new_data - *offset;
 525         else
 526                 *stat = (new_data + BIT_ULL(48)) - *offset;
 527         *stat &= 0xFFFFFFFFFFFFULL;
 528 }
 529
 530 /**
 531  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 532  * @hw: ptr to the hardware info
 533  * @reg: the hw reg to read
 534  * @offset_loaded: has the initial offset been loaded yet
 535  * @offset: ptr to current offset value
 536  * @stat: ptr to the stat
 537  **/
 538 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 539                                bool offset_loaded, u64 *offset, u64 *stat)
 540 {
 541         u32 new_data;
 542
 543         new_data = rd32(hw, reg);
 544         if (!offset_loaded)
 545                 *offset = new_data;
 546         if (likely(new_data >= *offset))
 547                 *stat = (u32)(new_data - *offset);
 548         else
 549                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 550 }
 551
 552 /**
 553  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 554  * @vsi: the VSI to be updated
 555  **/
 556 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 557 {
 558         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 559         struct i40e_pf *pf = vsi->back;
 560         struct i40e_hw *hw = &pf->hw;
 561         struct i40e_eth_stats *oes;
 562         struct i40e_eth_stats *es;     /* device's eth stats */
 563
 564         es = &vsi->eth_stats;
 565         oes = &vsi->eth_stats_offsets;
 566
 567         /* Gather up the stats that the hw collects */
 568         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 569                            vsi->stat_offsets_loaded,
 570                            &oes->tx_errors, &es->tx_errors);
 571         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 572                            vsi->stat_offsets_loaded,
 573                            &oes->rx_discards, &es->rx_discards);
 574         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 575                            vsi->stat_offsets_loaded,
 576                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 577         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 578                            vsi->stat_offsets_loaded,
 579                            &oes->tx_errors, &es->tx_errors);
 580
 581         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 582                            I40E_GLV_GORCL(stat_idx),
 583                            vsi->stat_offsets_loaded,
 584                            &oes->rx_bytes, &es->rx_bytes);
 585         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 586                            I40E_GLV_UPRCL(stat_idx),
 587                            vsi->stat_offsets_loaded,
 588                            &oes->rx_unicast, &es->rx_unicast);
 589         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 590                            I40E_GLV_MPRCL(stat_idx),
 591                            vsi->stat_offsets_loaded,
 592                            &oes->rx_multicast, &es->rx_multicast);
 593         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 594                            I40E_GLV_BPRCL(stat_idx),
 595                            vsi->stat_offsets_loaded,
 596                            &oes->rx_broadcast, &es->rx_broadcast);
 597
 598         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 599                            I40E_GLV_GOTCL(stat_idx),
 600                            vsi->stat_offsets_loaded,
 601                            &oes->tx_bytes, &es->tx_bytes);
 602         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 603                            I40E_GLV_UPTCL(stat_idx),
 604                            vsi->stat_offsets_loaded,
 605                            &oes->tx_unicast, &es->tx_unicast);
 606         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 607                            I40E_GLV_MPTCL(stat_idx),
 608                            vsi->stat_offsets_loaded,
 609                            &oes->tx_multicast, &es->tx_multicast);
 610         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 611                            I40E_GLV_BPTCL(stat_idx),
 612                            vsi->stat_offsets_loaded,
 613                            &oes->tx_broadcast, &es->tx_broadcast);
 614         vsi->stat_offsets_loaded = true;
 615 }
 616
 617 /**
 618  * i40e_update_veb_stats - Update Switch component statistics
 619  * @veb: the VEB being updated
 620  **/
 621 static void i40e_update_veb_stats(struct i40e_veb *veb)
 622 {
 623         struct i40e_pf *pf = veb->pf;
 624         struct i40e_hw *hw = &pf->hw;
 625         struct i40e_eth_stats *oes;
 626         struct i40e_eth_stats *es;     /* device's eth stats */
 627         int idx = 0;
 628
 629         idx = veb->stats_idx;
 630         es = &veb->stats;
 631         oes = &veb->stats_offsets;
 632
 633         /* Gather up the stats that the hw collects */
 634         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 635                            veb->stat_offsets_loaded,
 636                            &oes->tx_discards, &es->tx_discards);
 637         if (hw->revision_id > 0)
 638                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 639                                    veb->stat_offsets_loaded,
 640                                    &oes->rx_unknown_protocol,
 641                                    &es->rx_unknown_protocol);
 642         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 643                            veb->stat_offsets_loaded,
 644                            &oes->rx_bytes, &es->rx_bytes);
 645         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 646                            veb->stat_offsets_loaded,
 647                            &oes->rx_unicast, &es->rx_unicast);
 648         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 649                            veb->stat_offsets_loaded,
 650                            &oes->rx_multicast, &es->rx_multicast);
 651         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 652                            veb->stat_offsets_loaded,
 653                            &oes->rx_broadcast, &es->rx_broadcast);
 654
 655         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 656                            veb->stat_offsets_loaded,
 657                            &oes->tx_bytes, &es->tx_bytes);
 658         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 659                            veb->stat_offsets_loaded,
 660                            &oes->tx_unicast, &es->tx_unicast);
 661         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 662                            veb->stat_offsets_loaded,
 663                            &oes->tx_multicast, &es->tx_multicast);
 664         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 665                            veb->stat_offsets_loaded,
 666                            &oes->tx_broadcast, &es->tx_broadcast);
 667         veb->stat_offsets_loaded = true;
 668 }
 669
 670 #ifdef I40E_FCOE
 671 /**
 672  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 673  * @vsi: the VSI that is capable of doing FCoE
 674  **/
 675 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 676 {
 677         struct i40e_pf *pf = vsi->back;
 678         struct i40e_hw *hw = &pf->hw;
 679         struct i40e_fcoe_stats *ofs;
 680         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 681         int idx;
 682
 683         if (vsi->type != I40E_VSI_FCOE)
 684                 return;
 685
 686         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 687         fs = &vsi->fcoe_stats;
 688         ofs = &vsi->fcoe_stats_offsets;
 689
 690         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 691                            vsi->fcoe_stat_offsets_loaded,
 692                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 693         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 694                            vsi->fcoe_stat_offsets_loaded,
 695                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 696         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 697                            vsi->fcoe_stat_offsets_loaded,
 698                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 699         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 700                            vsi->fcoe_stat_offsets_loaded,
 701                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 702         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 703                            vsi->fcoe_stat_offsets_loaded,
 704                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 705         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 706                            vsi->fcoe_stat_offsets_loaded,
 707                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 708         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 709                            vsi->fcoe_stat_offsets_loaded,
 710                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 711         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 712                            vsi->fcoe_stat_offsets_loaded,
 713                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 714
 715         vsi->fcoe_stat_offsets_loaded = true;
 716 }
 717
 718 #endif
 719 /**
 720  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 721  * @pf: the corresponding PF
 722  *
 723  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 724  **/
 725 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 726 {
 727         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 728         struct i40e_hw_port_stats *nsd = &pf->stats;
 729         struct i40e_hw *hw = &pf->hw;
 730         u64 xoff = 0;
 731         u16 i, v;
 732
 733         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 734             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 735                 return;
 736
 737         xoff = nsd->link_xoff_rx;
 738         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 739                            pf->stat_offsets_loaded,
 740                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 741
 742         /* No new LFC xoff rx */
 743         if (!(nsd->link_xoff_rx - xoff))
 744                 return;
 745
 746         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 747         for (v = 0; v < pf->num_alloc_vsi; v++) {
 748                 struct i40e_vsi *vsi = pf->vsi[v];
 749
 750                 if (!vsi || !vsi->tx_rings[0])
 751                         continue;
 752
 753                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 754                         struct i40e_ring *ring = vsi->tx_rings[i];
 755                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 756                 }
 757         }
 758 }
 759
 760 /**
 761  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 762  * @pf: the corresponding PF
 763  *
 764  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 765  **/
 766 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 767 {
 768         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 769         struct i40e_hw_port_stats *nsd = &pf->stats;
 770         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 771         struct i40e_dcbx_config *dcb_cfg;
 772         struct i40e_hw *hw = &pf->hw;
 773         u16 i, v;
 774         u8 tc;
 775
 776         dcb_cfg = &hw->local_dcbx_config;
 777
 778         /* Collect Link XOFF stats when PFC is disabled */
 779         if (!dcb_cfg->pfc.pfcenable) {
 780                 i40e_update_link_xoff_rx(pf);
 781                 return;
 782         }
 783
 784         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 785                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 786                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 787                                    pf->stat_offsets_loaded,
 788                                    &osd->priority_xoff_rx[i],
 789                                    &nsd->priority_xoff_rx[i]);
 790
 791                 /* No new PFC xoff rx */
 792                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 793                         continue;
 794                 /* Get the TC for given priority */
 795                 tc = dcb_cfg->etscfg.prioritytable[i];
 796                 xoff[tc] = true;
 797         }
 798
 799         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 800         for (v = 0; v < pf->num_alloc_vsi; v++) {
 801                 struct i40e_vsi *vsi = pf->vsi[v];
 802
 803                 if (!vsi || !vsi->tx_rings[0])
 804                         continue;
 805
 806                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 807                         struct i40e_ring *ring = vsi->tx_rings[i];
 808
 809                         tc = ring->dcb_tc;
 810                         if (xoff[tc])
 811                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 812                                           &ring->state);
 813                 }
 814         }
 815 }
 816
 817 /**
 818  * i40e_update_vsi_stats - Update the vsi statistics counters.
 819  * @vsi: the VSI to be updated
 820  *
 821  * There are a few instances where we store the same stat in a
 822  * couple of different structs.  This is partly because we have
 823  * the netdev stats that need to be filled out, which is slightly
 824  * different from the "eth_stats" defined by the chip and used in
 825  * VF communications.  We sort it out here.
 826  **/
 827 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 828 {
 829         struct i40e_pf *pf = vsi->back;
 830         struct rtnl_link_stats64 *ons;
 831         struct rtnl_link_stats64 *ns;   /* netdev stats */
 832         struct i40e_eth_stats *oes;
 833         struct i40e_eth_stats *es;     /* device's eth stats */
 834         u32 tx_restart, tx_busy;
 835         struct i40e_ring *p;
 836         u32 rx_page, rx_buf;
 837         u64 bytes, packets;
 838         unsigned int start;
 839         u64 rx_p, rx_b;
 840         u64 tx_p, tx_b;
 841         u16 q;
 842
 843         if (test_bit(__I40E_DOWN, &vsi->state) ||
 844             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 845                 return;
 846
 847         ns = i40e_get_vsi_stats_struct(vsi);
 848         ons = &vsi->net_stats_offsets;
 849         es = &vsi->eth_stats;
 850         oes = &vsi->eth_stats_offsets;
 851
 852         /* Gather up the netdev and vsi stats that the driver collects
 853          * on the fly during packet processing
 854          */
 855         rx_b = rx_p = 0;
 856         tx_b = tx_p = 0;
 857         tx_restart = tx_busy = 0;
 858         rx_page = 0;
 859         rx_buf = 0;
 860         rcu_read_lock();
 861         for (q = 0; q < vsi->num_queue_pairs; q++) {
 862                 /* locate Tx ring */
 863                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 864
 865                 do {
 866                         start = u64_stats_fetch_begin_irq(&p->syncp);
 867                         packets = p->stats.packets;
 868                         bytes = p->stats.bytes;
 869                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 870                 tx_b += bytes;
 871                 tx_p += packets;
 872                 tx_restart += p->tx_stats.restart_queue;
 873                 tx_busy += p->tx_stats.tx_busy;
 874
 875                 /* Rx queue is part of the same block as Tx queue */
 876                 p = &p[1];
 877                 do {
 878                         start = u64_stats_fetch_begin_irq(&p->syncp);
 879                         packets = p->stats.packets;
 880                         bytes = p->stats.bytes;
 881                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 882                 rx_b += bytes;
 883                 rx_p += packets;
 884                 rx_buf += p->rx_stats.alloc_buff_failed;
 885                 rx_page += p->rx_stats.alloc_page_failed;
 886         }
 887         rcu_read_unlock();
 888         vsi->tx_restart = tx_restart;
 889         vsi->tx_busy = tx_busy;
 890         vsi->rx_page_failed = rx_page;
 891         vsi->rx_buf_failed = rx_buf;
 892
 893         ns->rx_packets = rx_p;
 894         ns->rx_bytes = rx_b;
 895         ns->tx_packets = tx_p;
 896         ns->tx_bytes = tx_b;
 897
 898         /* update netdev stats from eth stats */
 899         i40e_update_eth_stats(vsi);
 900         ons->tx_errors = oes->tx_errors;
 901         ns->tx_errors = es->tx_errors;
 902         ons->multicast = oes->rx_multicast;
 903         ns->multicast = es->rx_multicast;
 904         ons->rx_dropped = oes->rx_discards;
 905         ns->rx_dropped = es->rx_discards;
 906         ons->tx_dropped = oes->tx_discards;
 907         ns->tx_dropped = es->tx_discards;
 908
 909         /* pull in a couple PF stats if this is the main vsi */
 910         if (vsi == pf->vsi[pf->lan_vsi]) {
 911                 ns->rx_crc_errors = pf->stats.crc_errors;
 912                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 913                 ns->rx_length_errors = pf->stats.rx_length_errors;
 914         }
 915 }
 916
 917 /**
 918  * i40e_update_pf_stats - Update the PF statistics counters.
 919  * @pf: the PF to be updated
 920  **/
 921 static void i40e_update_pf_stats(struct i40e_pf *pf)
 922 {
 923         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 924         struct i40e_hw_port_stats *nsd = &pf->stats;
 925         struct i40e_hw *hw = &pf->hw;
 926         u32 val;
 927         int i;
 928
 929         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 930                            I40E_GLPRT_GORCL(hw->port),
 931                            pf->stat_offsets_loaded,
 932                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 933         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 934                            I40E_GLPRT_GOTCL(hw->port),
 935                            pf->stat_offsets_loaded,
 936                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 937         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 938                            pf->stat_offsets_loaded,
 939                            &osd->eth.rx_discards,
 940                            &nsd->eth.rx_discards);
 941         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 942                            I40E_GLPRT_UPRCL(hw->port),
 943                            pf->stat_offsets_loaded,
 944                            &osd->eth.rx_unicast,
 945                            &nsd->eth.rx_unicast);
 946         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 947                            I40E_GLPRT_MPRCL(hw->port),
 948                            pf->stat_offsets_loaded,
 949                            &osd->eth.rx_multicast,
 950                            &nsd->eth.rx_multicast);
 951         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 952                            I40E_GLPRT_BPRCL(hw->port),
 953                            pf->stat_offsets_loaded,
 954                            &osd->eth.rx_broadcast,
 955                            &nsd->eth.rx_broadcast);
 956         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 957                            I40E_GLPRT_UPTCL(hw->port),
 958                            pf->stat_offsets_loaded,
 959                            &osd->eth.tx_unicast,
 960                            &nsd->eth.tx_unicast);
 961         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 962                            I40E_GLPRT_MPTCL(hw->port),
 963                            pf->stat_offsets_loaded,
 964                            &osd->eth.tx_multicast,
 965                            &nsd->eth.tx_multicast);
 966         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 967                            I40E_GLPRT_BPTCL(hw->port),
 968                            pf->stat_offsets_loaded,
 969                            &osd->eth.tx_broadcast,
 970                            &nsd->eth.tx_broadcast);
 971
 972         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 973                            pf->stat_offsets_loaded,
 974                            &osd->tx_dropped_link_down,
 975                            &nsd->tx_dropped_link_down);
 976
 977         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 978                            pf->stat_offsets_loaded,
 979                            &osd->crc_errors, &nsd->crc_errors);
 980
 981         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 982                            pf->stat_offsets_loaded,
 983                            &osd->illegal_bytes, &nsd->illegal_bytes);
 984
 985         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 986                            pf->stat_offsets_loaded,
 987                            &osd->mac_local_faults,
 988                            &nsd->mac_local_faults);
 989         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 990                            pf->stat_offsets_loaded,
 991                            &osd->mac_remote_faults,
 992                            &nsd->mac_remote_faults);
 993
 994         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 995                            pf->stat_offsets_loaded,
 996                            &osd->rx_length_errors,
 997                            &nsd->rx_length_errors);
 998
 999         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1000                            pf->stat_offsets_loaded,
1001                            &osd->link_xon_rx, &nsd->link_xon_rx);
1002         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1003                            pf->stat_offsets_loaded,
1004                            &osd->link_xon_tx, &nsd->link_xon_tx);
1005         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
1006         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1007                            pf->stat_offsets_loaded,
1008                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1009
1010         for (i = 0; i < 8; i++) {
1011                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1012                                    pf->stat_offsets_loaded,
1013                                    &osd->priority_xon_rx[i],
1014                                    &nsd->priority_xon_rx[i]);
1015                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1016                                    pf->stat_offsets_loaded,
1017                                    &osd->priority_xon_tx[i],
1018                                    &nsd->priority_xon_tx[i]);
1019                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1020                                    pf->stat_offsets_loaded,
1021                                    &osd->priority_xoff_tx[i],
1022                                    &nsd->priority_xoff_tx[i]);
1023                 i40e_stat_update32(hw,
1024                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1025                                    pf->stat_offsets_loaded,
1026                                    &osd->priority_xon_2_xoff[i],
1027                                    &nsd->priority_xon_2_xoff[i]);
1028         }
1029
1030         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1031                            I40E_GLPRT_PRC64L(hw->port),
1032                            pf->stat_offsets_loaded,
1033                            &osd->rx_size_64, &nsd->rx_size_64);
1034         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1035                            I40E_GLPRT_PRC127L(hw->port),
1036                            pf->stat_offsets_loaded,
1037                            &osd->rx_size_127, &nsd->rx_size_127);
1038         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1039                            I40E_GLPRT_PRC255L(hw->port),
1040                            pf->stat_offsets_loaded,
1041                            &osd->rx_size_255, &nsd->rx_size_255);
1042         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1043                            I40E_GLPRT_PRC511L(hw->port),
1044                            pf->stat_offsets_loaded,
1045                            &osd->rx_size_511, &nsd->rx_size_511);
1046         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1047                            I40E_GLPRT_PRC1023L(hw->port),
1048                            pf->stat_offsets_loaded,
1049                            &osd->rx_size_1023, &nsd->rx_size_1023);
1050         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1051                            I40E_GLPRT_PRC1522L(hw->port),
1052                            pf->stat_offsets_loaded,
1053                            &osd->rx_size_1522, &nsd->rx_size_1522);
1054         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1055                            I40E_GLPRT_PRC9522L(hw->port),
1056                            pf->stat_offsets_loaded,
1057                            &osd->rx_size_big, &nsd->rx_size_big);
1058
1059         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1060                            I40E_GLPRT_PTC64L(hw->port),
1061                            pf->stat_offsets_loaded,
1062                            &osd->tx_size_64, &nsd->tx_size_64);
1063         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1064                            I40E_GLPRT_PTC127L(hw->port),
1065                            pf->stat_offsets_loaded,
1066                            &osd->tx_size_127, &nsd->tx_size_127);
1067         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1068                            I40E_GLPRT_PTC255L(hw->port),
1069                            pf->stat_offsets_loaded,
1070                            &osd->tx_size_255, &nsd->tx_size_255);
1071         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1072                            I40E_GLPRT_PTC511L(hw->port),
1073                            pf->stat_offsets_loaded,
1074                            &osd->tx_size_511, &nsd->tx_size_511);
1075         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1076                            I40E_GLPRT_PTC1023L(hw->port),
1077                            pf->stat_offsets_loaded,
1078                            &osd->tx_size_1023, &nsd->tx_size_1023);
1079         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1080                            I40E_GLPRT_PTC1522L(hw->port),
1081                            pf->stat_offsets_loaded,
1082                            &osd->tx_size_1522, &nsd->tx_size_1522);
1083         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1084                            I40E_GLPRT_PTC9522L(hw->port),
1085                            pf->stat_offsets_loaded,
1086                            &osd->tx_size_big, &nsd->tx_size_big);
1087
1088         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1089                            pf->stat_offsets_loaded,
1090                            &osd->rx_undersize, &nsd->rx_undersize);
1091         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1092                            pf->stat_offsets_loaded,
1093                            &osd->rx_fragments, &nsd->rx_fragments);
1094         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1095                            pf->stat_offsets_loaded,
1096                            &osd->rx_oversize, &nsd->rx_oversize);
1097         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1098                            pf->stat_offsets_loaded,
1099                            &osd->rx_jabber, &nsd->rx_jabber);
1100
1101         /* FDIR stats */
1102         i40e_stat_update32(hw,
1103                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1104                            pf->stat_offsets_loaded,
1105                            &osd->fd_atr_match, &nsd->fd_atr_match);
1106         i40e_stat_update32(hw,
1107                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1108                            pf->stat_offsets_loaded,
1109                            &osd->fd_sb_match, &nsd->fd_sb_match);
1110         i40e_stat_update32(hw,
1111                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1112                       pf->stat_offsets_loaded,
1113                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1114
1115         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1116         nsd->tx_lpi_status =
1117                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1118                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1119         nsd->rx_lpi_status =
1120                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1121                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1122         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1123                            pf->stat_offsets_loaded,
1124                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1125         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1126                            pf->stat_offsets_loaded,
1127                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1128
1129         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1130             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1131                 nsd->fd_sb_status = true;
1132         else
1133                 nsd->fd_sb_status = false;
1134
1135         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1136             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1137                 nsd->fd_atr_status = true;
1138         else
1139                 nsd->fd_atr_status = false;
1140
1141         pf->stat_offsets_loaded = true;
1142 }
1143
1144 /**
1145  * i40e_update_stats - Update the various statistics counters.
1146  * @vsi: the VSI to be updated
1147  *
1148  * Update the various stats for this VSI and its related entities.
1149  **/
1150 void i40e_update_stats(struct i40e_vsi *vsi)
1151 {
1152         struct i40e_pf *pf = vsi->back;
1153
1154         if (vsi == pf->vsi[pf->lan_vsi])
1155                 i40e_update_pf_stats(pf);
1156
1157         i40e_update_vsi_stats(vsi);
1158 #ifdef I40E_FCOE
1159         i40e_update_fcoe_stats(vsi);
1160 #endif
1161 }
1162
1163 /**
1164  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1165  * @vsi: the VSI to be searched
1166  * @macaddr: the MAC address
1167  * @vlan: the vlan
1168  * @is_vf: make sure its a VF filter, else doesn't matter
1169  * @is_netdev: make sure its a netdev filter, else doesn't matter
1170  *
1171  * Returns ptr to the filter object or NULL
1172  **/
1173 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1174                                                 u8 *macaddr, s16 vlan,
1175                                                 bool is_vf, bool is_netdev)
1176 {
1177         struct i40e_mac_filter *f;
1178
1179         if (!vsi || !macaddr)
1180                 return NULL;
1181
1182         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1183                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1184                     (vlan == f->vlan)    &&
1185                     (!is_vf || f->is_vf) &&
1186                     (!is_netdev || f->is_netdev))
1187                         return f;
1188         }
1189         return NULL;
1190 }
1191
1192 /**
1193  * i40e_find_mac - Find a mac addr in the macvlan filters list
1194  * @vsi: the VSI to be searched
1195  * @macaddr: the MAC address we are searching for
1196  * @is_vf: make sure its a VF filter, else doesn't matter
1197  * @is_netdev: make sure its a netdev filter, else doesn't matter
1198  *
1199  * Returns the first filter with the provided MAC address or NULL if
1200  * MAC address was not found
1201  **/
1202 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1203                                       bool is_vf, bool is_netdev)
1204 {
1205         struct i40e_mac_filter *f;
1206
1207         if (!vsi || !macaddr)
1208                 return NULL;
1209
1210         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1211                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1212                     (!is_vf || f->is_vf) &&
1213                     (!is_netdev || f->is_netdev))
1214                         return f;
1215         }
1216         return NULL;
1217 }
1218
1219 /**
1220  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1221  * @vsi: the VSI to be searched
1222  *
1223  * Returns true if VSI is in vlan mode or false otherwise
1224  **/
1225 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1226 {
1227         struct i40e_mac_filter *f;
1228
1229         /* Only -1 for all the filters denotes not in vlan mode
1230          * so we have to go through all the list in order to make sure
1231          */
1232         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1233                 if (f->vlan >= 0)
1234                         return true;
1235         }
1236
1237         return false;
1238 }
1239
1240 /**
1241  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1242  * @vsi: the VSI to be searched
1243  * @macaddr: the mac address to be filtered
1244  * @is_vf: true if it is a VF
1245  * @is_netdev: true if it is a netdev
1246  *
1247  * Goes through all the macvlan filters and adds a
1248  * macvlan filter for each unique vlan that already exists
1249  *
1250  * Returns first filter found on success, else NULL
1251  **/
1252 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1253                                              bool is_vf, bool is_netdev)
1254 {
1255         struct i40e_mac_filter *f;
1256
1257         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1258                 if (vsi->info.pvid)
1259                         f->vlan = le16_to_cpu(vsi->info.pvid);
1260                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1261                                       is_vf, is_netdev)) {
1262                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1263                                              is_vf, is_netdev))
1264                                 return NULL;
1265                 }
1266         }
1267
1268         return list_first_entry_or_null(&vsi->mac_filter_list,
1269                                         struct i40e_mac_filter, list);
1270 }
1271
1272 /**
1273  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1274  * @vsi: the PF Main VSI - inappropriate for any other VSI
1275  * @macaddr: the MAC address
1276  *
1277  * Some older firmware configurations set up a default promiscuous VLAN
1278  * filter that needs to be removed.
1279  **/
1280 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1281 {
1282         struct i40e_aqc_remove_macvlan_element_data element;
1283         struct i40e_pf *pf = vsi->back;
1284         i40e_status ret;
1285
1286         /* Only appropriate for the PF main VSI */
1287         if (vsi->type != I40E_VSI_MAIN)
1288                 return -EINVAL;
1289
1290         memset(&element, 0, sizeof(element));
1291         ether_addr_copy(element.mac_addr, macaddr);
1292         element.vlan_tag = 0;
1293         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1294                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1295         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1296         if (ret)
1297                 return -ENOENT;
1298
1299         return 0;
1300 }
1301
1302 /**
1303  * i40e_add_filter - Add a mac/vlan filter to the VSI
1304  * @vsi: the VSI to be searched
1305  * @macaddr: the MAC address
1306  * @vlan: the vlan
1307  * @is_vf: make sure its a VF filter, else doesn't matter
1308  * @is_netdev: make sure its a netdev filter, else doesn't matter
1309  *
1310  * Returns ptr to the filter object or NULL when no memory available.
1311  **/
1312 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1313                                         u8 *macaddr, s16 vlan,
1314                                         bool is_vf, bool is_netdev)
1315 {
1316         struct i40e_mac_filter *f;
1317
1318         if (!vsi || !macaddr)
1319                 return NULL;
1320
1321         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1322         if (!f) {
1323                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1324                 if (!f)
1325                         goto add_filter_out;
1326
1327                 ether_addr_copy(f->macaddr, macaddr);
1328                 f->vlan = vlan;
1329                 f->changed = true;
1330
1331                 INIT_LIST_HEAD(&f->list);
1332                 list_add(&f->list, &vsi->mac_filter_list);
1333         }
1334
1335         /* increment counter and add a new flag if needed */
1336         if (is_vf) {
1337                 if (!f->is_vf) {
1338                         f->is_vf = true;
1339                         f->counter++;
1340                 }
1341         } else if (is_netdev) {
1342                 if (!f->is_netdev) {
1343                         f->is_netdev = true;
1344                         f->counter++;
1345                 }
1346         } else {
1347                 f->counter++;
1348         }
1349
1350         /* changed tells sync_filters_subtask to
1351          * push the filter down to the firmware
1352          */
1353         if (f->changed) {
1354                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1355                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1356         }
1357
1358 add_filter_out:
1359         return f;
1360 }
1361
1362 /**
1363  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1364  * @vsi: the VSI to be searched
1365  * @macaddr: the MAC address
1366  * @vlan: the vlan
1367  * @is_vf: make sure it's a VF filter, else doesn't matter
1368  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1369  **/
1370 void i40e_del_filter(struct i40e_vsi *vsi,
1371                      u8 *macaddr, s16 vlan,
1372                      bool is_vf, bool is_netdev)
1373 {
1374         struct i40e_mac_filter *f;
1375
1376         if (!vsi || !macaddr)
1377                 return;
1378
1379         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1380         if (!f || f->counter == 0)
1381                 return;
1382
1383         if (is_vf) {
1384                 if (f->is_vf) {
1385                         f->is_vf = false;
1386                         f->counter--;
1387                 }
1388         } else if (is_netdev) {
1389                 if (f->is_netdev) {
1390                         f->is_netdev = false;
1391                         f->counter--;
1392                 }
1393         } else {
1394                 /* make sure we don't remove a filter in use by VF or netdev */
1395                 int min_f = 0;
1396                 min_f += (f->is_vf ? 1 : 0);
1397                 min_f += (f->is_netdev ? 1 : 0);
1398
1399                 if (f->counter > min_f)
1400                         f->counter--;
1401         }
1402
1403         /* counter == 0 tells sync_filters_subtask to
1404          * remove the filter from the firmware's list
1405          */
1406         if (f->counter == 0) {
1407                 f->changed = true;
1408                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1409                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1410         }
1411 }
1412
1413 /**
1414  * i40e_set_mac - NDO callback to set mac address
1415  * @netdev: network interface device structure
1416  * @p: pointer to an address structure
1417  *
1418  * Returns 0 on success, negative on failure
1419  **/
1420 #ifdef I40E_FCOE
1421 int i40e_set_mac(struct net_device *netdev, void *p)
1422 #else
1423 static int i40e_set_mac(struct net_device *netdev, void *p)
1424 #endif
1425 {
1426         struct i40e_netdev_priv *np = netdev_priv(netdev);
1427         struct i40e_vsi *vsi = np->vsi;
1428         struct i40e_pf *pf = vsi->back;
1429         struct i40e_hw *hw = &pf->hw;
1430         struct sockaddr *addr = p;
1431         struct i40e_mac_filter *f;
1432
1433         if (!is_valid_ether_addr(addr->sa_data))
1434                 return -EADDRNOTAVAIL;
1435
1436         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1437                 netdev_info(netdev, "already using mac address %pM\n",
1438                             addr->sa_data);
1439                 return 0;
1440         }
1441
1442         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1443             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1444                 return -EADDRNOTAVAIL;
1445
1446         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1447                 netdev_info(netdev, "returning to hw mac address %pM\n",
1448                             hw->mac.addr);
1449         else
1450                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1451
1452         if (vsi->type == I40E_VSI_MAIN) {
1453                 i40e_status ret;
1454                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1455                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1456                                                 addr->sa_data, NULL);
1457                 if (ret) {
1458                         netdev_info(netdev,
1459                                     "Addr change for Main VSI failed: %d\n",
1460                                     ret);
1461                         return -EADDRNOTAVAIL;
1462                 }
1463         }
1464
1465         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1466                 struct i40e_aqc_remove_macvlan_element_data element;
1467
1468                 memset(&element, 0, sizeof(element));
1469                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1470                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1471                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1472         } else {
1473                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1474                                 false, false);
1475         }
1476
1477         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1478                 struct i40e_aqc_add_macvlan_element_data element;
1479
1480                 memset(&element, 0, sizeof(element));
1481                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1482                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1483                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1484         } else {
1485                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1486                                     false, false);
1487                 if (f)
1488                         f->is_laa = true;
1489         }
1490
1491         i40e_sync_vsi_filters(vsi);
1492         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1493
1494         return 0;
1495 }
1496
1497 /**
1498  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1499  * @vsi: the VSI being setup
1500  * @ctxt: VSI context structure
1501  * @enabled_tc: Enabled TCs bitmap
1502  * @is_add: True if called before Add VSI
1503  *
1504  * Setup VSI queue mapping for enabled traffic classes.
1505  **/
1506 #ifdef I40E_FCOE
1507 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1508                               struct i40e_vsi_context *ctxt,
1509                               u8 enabled_tc,
1510                               bool is_add)
1511 #else
1512 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1513                                      struct i40e_vsi_context *ctxt,
1514                                      u8 enabled_tc,
1515                                      bool is_add)
1516 #endif
1517 {
1518         struct i40e_pf *pf = vsi->back;
1519         u16 sections = 0;
1520         u8 netdev_tc = 0;
1521         u16 numtc = 0;
1522         u16 qcount;
1523         u8 offset;
1524         u16 qmap;
1525         int i;
1526         u16 num_tc_qps = 0;
1527
1528         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1529         offset = 0;
1530
1531         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1532                 /* Find numtc from enabled TC bitmap */
1533                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1534                         if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
1535                                 numtc++;
1536                 }
1537                 if (!numtc) {
1538                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1539                         numtc = 1;
1540                 }
1541         } else {
1542                 /* At least TC0 is enabled in case of non-DCB case */
1543                 numtc = 1;
1544         }
1545
1546         vsi->tc_config.numtc = numtc;
1547         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1548         /* Number of queues per enabled TC */
1549         /* In MFP case we can have a much lower count of MSIx
1550          * vectors available and so we need to lower the used
1551          * q count.
1552          */
1553         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1554                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1555         else
1556                 qcount = vsi->alloc_queue_pairs;
1557         num_tc_qps = qcount / numtc;
1558         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1559
1560         /* Setup queue offset/count for all TCs for given VSI */
1561         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1562                 /* See if the given TC is enabled for the given VSI */
1563                 if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
1564                         /* TC is enabled */
1565                         int pow, num_qps;
1566
1567                         switch (vsi->type) {
1568                         case I40E_VSI_MAIN:
1569                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1570                                 break;
1571 #ifdef I40E_FCOE
1572                         case I40E_VSI_FCOE:
1573                                 qcount = num_tc_qps;
1574                                 break;
1575 #endif
1576                         case I40E_VSI_FDIR:
1577                         case I40E_VSI_SRIOV:
1578                         case I40E_VSI_VMDQ2:
1579                         default:
1580                                 qcount = num_tc_qps;
1581                                 WARN_ON(i != 0);
1582                                 break;
1583                         }
1584                         vsi->tc_config.tc_info[i].qoffset = offset;
1585                         vsi->tc_config.tc_info[i].qcount = qcount;
1586
1587                         /* find the next higher power-of-2 of num queue pairs */
1588                         num_qps = qcount;
1589                         pow = 0;
1590                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1591                                 pow++;
1592                                 num_qps >>= 1;
1593                         }
1594
1595                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1596                         qmap =
1597                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1598                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1599
1600                         offset += qcount;
1601                 } else {
1602                         /* TC is not enabled so set the offset to
1603                          * default queue and allocate one queue
1604                          * for the given TC.
1605                          */
1606                         vsi->tc_config.tc_info[i].qoffset = 0;
1607                         vsi->tc_config.tc_info[i].qcount = 1;
1608                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1609
1610                         qmap = 0;
1611                 }
1612                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1613         }
1614
1615         /* Set actual Tx/Rx queue pairs */
1616         vsi->num_queue_pairs = offset;
1617         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1618                 if (vsi->req_queue_pairs > 0)
1619                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1620                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1621                         vsi->num_queue_pairs = pf->num_lan_msix;
1622         }
1623
1624         /* Scheduler section valid can only be set for ADD VSI */
1625         if (is_add) {
1626                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1627
1628                 ctxt->info.up_enable_bits = enabled_tc;
1629         }
1630         if (vsi->type == I40E_VSI_SRIOV) {
1631                 ctxt->info.mapping_flags |=
1632                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1633                 for (i = 0; i < vsi->num_queue_pairs; i++)
1634                         ctxt->info.queue_mapping[i] =
1635                                                cpu_to_le16(vsi->base_queue + i);
1636         } else {
1637                 ctxt->info.mapping_flags |=
1638                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1639                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1640         }
1641         ctxt->info.valid_sections |= cpu_to_le16(sections);
1642 }
1643
1644 /**
1645  * i40e_set_rx_mode - NDO callback to set the netdev filters
1646  * @netdev: network interface device structure
1647  **/
1648 #ifdef I40E_FCOE
1649 void i40e_set_rx_mode(struct net_device *netdev)
1650 #else
1651 static void i40e_set_rx_mode(struct net_device *netdev)
1652 #endif
1653 {
1654         struct i40e_netdev_priv *np = netdev_priv(netdev);
1655         struct i40e_mac_filter *f, *ftmp;
1656         struct i40e_vsi *vsi = np->vsi;
1657         struct netdev_hw_addr *uca;
1658         struct netdev_hw_addr *mca;
1659         struct netdev_hw_addr *ha;
1660
1661         /* add addr if not already in the filter list */
1662         netdev_for_each_uc_addr(uca, netdev) {
1663                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1664                         if (i40e_is_vsi_in_vlan(vsi))
1665                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1666                                                      false, true);
1667                         else
1668                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1669                                                 false, true);
1670                 }
1671         }
1672
1673         netdev_for_each_mc_addr(mca, netdev) {
1674                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1675                         if (i40e_is_vsi_in_vlan(vsi))
1676                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1677                                                      false, true);
1678                         else
1679                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1680                                                 false, true);
1681                 }
1682         }
1683
1684         /* remove filter if not in netdev list */
1685         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1686                 bool found = false;
1687
1688                 if (!f->is_netdev)
1689                         continue;
1690
1691                 if (is_multicast_ether_addr(f->macaddr)) {
1692                         netdev_for_each_mc_addr(mca, netdev) {
1693                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1694                                         found = true;
1695                                         break;
1696                                 }
1697                         }
1698                 } else {
1699                         netdev_for_each_uc_addr(uca, netdev) {
1700                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1701                                         found = true;
1702                                         break;
1703                                 }
1704                         }
1705
1706                         for_each_dev_addr(netdev, ha) {
1707                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1708                                         found = true;
1709                                         break;
1710                                 }
1711                         }
1712                 }
1713                 if (!found)
1714                         i40e_del_filter(
1715                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1716         }
1717
1718         /* check for other flag changes */
1719         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1720                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1721                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1722         }
1723 }
1724
1725 /**
1726  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1727  * @vsi: ptr to the VSI
1728  *
1729  * Push any outstanding VSI filter changes through the AdminQ.
1730  *
1731  * Returns 0 or error value
1732  **/
1733 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1734 {
1735         struct i40e_mac_filter *f, *ftmp;
1736         bool promisc_forced_on = false;
1737         bool add_happened = false;
1738         int filter_list_len = 0;
1739         u32 changed_flags = 0;
1740         i40e_status ret = 0;
1741         struct i40e_pf *pf;
1742         int num_add = 0;
1743         int num_del = 0;
1744         int aq_err = 0;
1745         u16 cmd_flags;
1746
1747         /* empty array typed pointers, kcalloc later */
1748         struct i40e_aqc_add_macvlan_element_data *add_list;
1749         struct i40e_aqc_remove_macvlan_element_data *del_list;
1750
1751         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1752                 usleep_range(1000, 2000);
1753         pf = vsi->back;
1754
1755         if (vsi->netdev) {
1756                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1757                 vsi->current_netdev_flags = vsi->netdev->flags;
1758         }
1759
1760         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1761                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1762
1763                 filter_list_len = pf->hw.aq.asq_buf_size /
1764                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1765                 del_list = kcalloc(filter_list_len,
1766                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1767                             GFP_KERNEL);
1768                 if (!del_list)
1769                         return -ENOMEM;
1770
1771                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1772                         if (!f->changed)
1773                                 continue;
1774
1775                         if (f->counter != 0)
1776                                 continue;
1777                         f->changed = false;
1778                         cmd_flags = 0;
1779
1780                         /* add to delete list */
1781                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1782                         del_list[num_del].vlan_tag =
1783                                 cpu_to_le16((u16)(f->vlan ==
1784                                             I40E_VLAN_ANY ? 0 : f->vlan));
1785
1786                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1787                         del_list[num_del].flags = cmd_flags;
1788                         num_del++;
1789
1790                         /* unlink from filter list */
1791                         list_del(&f->list);
1792                         kfree(f);
1793
1794                         /* flush a full buffer */
1795                         if (num_del == filter_list_len) {
1796                                 ret = i40e_aq_remove_macvlan(&pf->hw,
1797                                                   vsi->seid, del_list, num_del,
1798                                                   NULL);
1799                                 aq_err = pf->hw.aq.asq_last_status;
1800                                 num_del = 0;
1801                                 memset(del_list, 0, sizeof(*del_list));
1802
1803                                 if (ret && aq_err != I40E_AQ_RC_ENOENT)
1804                                         dev_info(&pf->pdev->dev,
1805                                                  "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1806                                                  i40e_stat_str(&pf->hw, ret),
1807                                                  i40e_aq_str(&pf->hw, aq_err));
1808                         }
1809                 }
1810                 if (num_del) {
1811                         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1812                                                      del_list, num_del, NULL);
1813                         aq_err = pf->hw.aq.asq_last_status;
1814                         num_del = 0;
1815
1816                         if (ret && aq_err != I40E_AQ_RC_ENOENT)
1817                                 dev_info(&pf->pdev->dev,
1818                                          "ignoring delete macvlan error, err %s aq_err %s\n",
1819                                          i40e_stat_str(&pf->hw, ret),
1820                                          i40e_aq_str(&pf->hw, aq_err));
1821                 }
1822
1823                 kfree(del_list);
1824                 del_list = NULL;
1825
1826                 /* do all the adds now */
1827                 filter_list_len = pf->hw.aq.asq_buf_size /
1828                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1829                 add_list = kcalloc(filter_list_len,
1830                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1831                                GFP_KERNEL);
1832                 if (!add_list)
1833                         return -ENOMEM;
1834
1835                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1836                         if (!f->changed)
1837                                 continue;
1838
1839                         if (f->counter == 0)
1840                                 continue;
1841                         f->changed = false;
1842                         add_happened = true;
1843                         cmd_flags = 0;
1844
1845                         /* add to add array */
1846                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1847                         add_list[num_add].vlan_tag =
1848                                 cpu_to_le16(
1849                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1850                         add_list[num_add].queue_number = 0;
1851
1852                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1853                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1854                         num_add++;
1855
1856                         /* flush a full buffer */
1857                         if (num_add == filter_list_len) {
1858                                 ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1859                                                           add_list, num_add,
1860                                                           NULL);
1861                                 aq_err = pf->hw.aq.asq_last_status;
1862                                 num_add = 0;
1863
1864                                 if (ret)
1865                                         break;
1866                                 memset(add_list, 0, sizeof(*add_list));
1867                         }
1868                 }
1869                 if (num_add) {
1870                         ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1871                                                   add_list, num_add, NULL);
1872                         aq_err = pf->hw.aq.asq_last_status;
1873                         num_add = 0;
1874                 }
1875                 kfree(add_list);
1876                 add_list = NULL;
1877
1878                 if (add_happened && ret && aq_err != I40E_AQ_RC_EINVAL) {
1879                         dev_info(&pf->pdev->dev,
1880                                  "add filter failed, err %s aq_err %s\n",
1881                                  i40e_stat_str(&pf->hw, ret),
1882                                  i40e_aq_str(&pf->hw, aq_err));
1883                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1884                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1885                                       &vsi->state)) {
1886                                 promisc_forced_on = true;
1887                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1888                                         &vsi->state);
1889                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1890                         }
1891                 }
1892         }
1893
1894         /* check for changes in promiscuous modes */
1895         if (changed_flags & IFF_ALLMULTI) {
1896                 bool cur_multipromisc;
1897                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1898                 ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1899                                                             vsi->seid,
1900                                                             cur_multipromisc,
1901                                                             NULL);
1902                 if (ret)
1903                         dev_info(&pf->pdev->dev,
1904                                  "set multi promisc failed, err %s aq_err %s\n",
1905                                  i40e_stat_str(&pf->hw, ret),
1906                                  i40e_aq_str(&pf->hw,
1907                                              pf->hw.aq.asq_last_status));
1908         }
1909         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1910                 bool cur_promisc;
1911                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1912                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1913                                         &vsi->state));
1914                 ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1915                                                           vsi->seid,
1916                                                           cur_promisc, NULL);
1917                 if (ret)
1918                         dev_info(&pf->pdev->dev,
1919                                  "set uni promisc failed, err %s, aq_err %s\n",
1920                                  i40e_stat_str(&pf->hw, ret),
1921                                  i40e_aq_str(&pf->hw,
1922                                              pf->hw.aq.asq_last_status));
1923                 ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1924                                                 vsi->seid,
1925                                                 cur_promisc, NULL);
1926                 if (ret)
1927                         dev_info(&pf->pdev->dev,
1928                                  "set brdcast promisc failed, err %s, aq_err %s\n",
1929                                  i40e_stat_str(&pf->hw, ret),
1930                                  i40e_aq_str(&pf->hw,
1931                                              pf->hw.aq.asq_last_status));
1932         }
1933
1934         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1935         return 0;
1936 }
1937
1938 /**
1939  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1940  * @pf: board private structure
1941  **/
1942 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1943 {
1944         int v;
1945
1946         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1947                 return;
1948         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1949
1950         for (v = 0; v < pf->num_alloc_vsi; v++) {
1951                 if (pf->vsi[v] &&
1952                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1953                         i40e_sync_vsi_filters(pf->vsi[v]);
1954         }
1955 }
1956
1957 /**
1958  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1959  * @netdev: network interface device structure
1960  * @new_mtu: new value for maximum frame size
1961  *
1962  * Returns 0 on success, negative on failure
1963  **/
1964 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1965 {
1966         struct i40e_netdev_priv *np = netdev_priv(netdev);
1967         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1968         struct i40e_vsi *vsi = np->vsi;
1969
1970         /* MTU < 68 is an error and causes problems on some kernels */
1971         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1972                 return -EINVAL;
1973
1974         netdev_info(netdev, "changing MTU from %d to %d\n",
1975                     netdev->mtu, new_mtu);
1976         netdev->mtu = new_mtu;
1977         if (netif_running(netdev))
1978                 i40e_vsi_reinit_locked(vsi);
1979
1980         return 0;
1981 }
1982
1983 /**
1984  * i40e_ioctl - Access the hwtstamp interface
1985  * @netdev: network interface device structure
1986  * @ifr: interface request data
1987  * @cmd: ioctl command
1988  **/
1989 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1990 {
1991         struct i40e_netdev_priv *np = netdev_priv(netdev);
1992         struct i40e_pf *pf = np->vsi->back;
1993
1994         switch (cmd) {
1995         case SIOCGHWTSTAMP:
1996                 return i40e_ptp_get_ts_config(pf, ifr);
1997         case SIOCSHWTSTAMP:
1998                 return i40e_ptp_set_ts_config(pf, ifr);
1999         default:
2000                 return -EOPNOTSUPP;
2001         }
2002 }
2003
2004 /**
2005  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2006  * @vsi: the vsi being adjusted
2007  **/
2008 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2009 {
2010         struct i40e_vsi_context ctxt;
2011         i40e_status ret;
2012
2013         if ((vsi->info.valid_sections &
2014              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2015             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2016                 return;  /* already enabled */
2017
2018         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2019         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2020                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2021
2022         ctxt.seid = vsi->seid;
2023         ctxt.info = vsi->info;
2024         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2025         if (ret) {
2026                 dev_info(&vsi->back->pdev->dev,
2027                          "update vlan stripping failed, err %s aq_err %s\n",
2028                          i40e_stat_str(&vsi->back->hw, ret),
2029                          i40e_aq_str(&vsi->back->hw,
2030                                      vsi->back->hw.aq.asq_last_status));
2031         }
2032 }
2033
2034 /**
2035  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2036  * @vsi: the vsi being adjusted
2037  **/
2038 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2039 {
2040         struct i40e_vsi_context ctxt;
2041         i40e_status ret;
2042
2043         if ((vsi->info.valid_sections &
2044              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2045             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2046              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2047                 return;  /* already disabled */
2048
2049         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2050         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2051                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2052
2053         ctxt.seid = vsi->seid;
2054         ctxt.info = vsi->info;
2055         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2056         if (ret) {
2057                 dev_info(&vsi->back->pdev->dev,
2058                          "update vlan stripping failed, err %s aq_err %s\n",
2059                          i40e_stat_str(&vsi->back->hw, ret),
2060                          i40e_aq_str(&vsi->back->hw,
2061                                      vsi->back->hw.aq.asq_last_status));
2062         }
2063 }
2064
2065 /**
2066  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2067  * @netdev: network interface to be adjusted
2068  * @features: netdev features to test if VLAN offload is enabled or not
2069  **/
2070 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2071 {
2072         struct i40e_netdev_priv *np = netdev_priv(netdev);
2073         struct i40e_vsi *vsi = np->vsi;
2074
2075         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2076                 i40e_vlan_stripping_enable(vsi);
2077         else
2078                 i40e_vlan_stripping_disable(vsi);
2079 }
2080
2081 /**
2082  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2083  * @vsi: the vsi being configured
2084  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2085  **/
2086 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2087 {
2088         struct i40e_mac_filter *f, *add_f;
2089         bool is_netdev, is_vf;
2090
2091         is_vf = (vsi->type == I40E_VSI_SRIOV);
2092         is_netdev = !!(vsi->netdev);
2093
2094         if (is_netdev) {
2095                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2096                                         is_vf, is_netdev);
2097                 if (!add_f) {
2098                         dev_info(&vsi->back->pdev->dev,
2099                                  "Could not add vlan filter %d for %pM\n",
2100                                  vid, vsi->netdev->dev_addr);
2101                         return -ENOMEM;
2102                 }
2103         }
2104
2105         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2106                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2107                 if (!add_f) {
2108                         dev_info(&vsi->back->pdev->dev,
2109                                  "Could not add vlan filter %d for %pM\n",
2110                                  vid, f->macaddr);
2111                         return -ENOMEM;
2112                 }
2113         }
2114
2115         /* Now if we add a vlan tag, make sure to check if it is the first
2116          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2117          * with 0, so we now accept untagged and specified tagged traffic
2118          * (and not any taged and untagged)
2119          */
2120         if (vid > 0) {
2121                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2122                                                   I40E_VLAN_ANY,
2123                                                   is_vf, is_netdev)) {
2124                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2125                                         I40E_VLAN_ANY, is_vf, is_netdev);
2126                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2127                                                 is_vf, is_netdev);
2128                         if (!add_f) {
2129                                 dev_info(&vsi->back->pdev->dev,
2130                                          "Could not add filter 0 for %pM\n",
2131                                          vsi->netdev->dev_addr);
2132                                 return -ENOMEM;
2133                         }
2134                 }
2135         }
2136
2137         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2138         if (vid > 0 && !vsi->info.pvid) {
2139                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2140                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2141                                              is_vf, is_netdev)) {
2142                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2143                                                 is_vf, is_netdev);
2144                                 add_f = i40e_add_filter(vsi, f->macaddr,
2145                                                         0, is_vf, is_netdev);
2146                                 if (!add_f) {
2147                                         dev_info(&vsi->back->pdev->dev,
2148                                                  "Could not add filter 0 for %pM\n",
2149                                                  f->macaddr);
2150                                         return -ENOMEM;
2151                                 }
2152                         }
2153                 }
2154         }
2155
2156         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2157             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2158                 return 0;
2159
2160         return i40e_sync_vsi_filters(vsi);
2161 }
2162
2163 /**
2164  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2165  * @vsi: the vsi being configured
2166  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2167  *
2168  * Return: 0 on success or negative otherwise
2169  **/
2170 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2171 {
2172         struct net_device *netdev = vsi->netdev;
2173         struct i40e_mac_filter *f, *add_f;
2174         bool is_vf, is_netdev;
2175         int filter_count = 0;
2176
2177         is_vf = (vsi->type == I40E_VSI_SRIOV);
2178         is_netdev = !!(netdev);
2179
2180         if (is_netdev)
2181                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2182
2183         list_for_each_entry(f, &vsi->mac_filter_list, list)
2184                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2185
2186         /* go through all the filters for this VSI and if there is only
2187          * vid == 0 it means there are no other filters, so vid 0 must
2188          * be replaced with -1. This signifies that we should from now
2189          * on accept any traffic (with any tag present, or untagged)
2190          */
2191         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2192                 if (is_netdev) {
2193                         if (f->vlan &&
2194                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2195                                 filter_count++;
2196                 }
2197
2198                 if (f->vlan)
2199                         filter_count++;
2200         }
2201
2202         if (!filter_count && is_netdev) {
2203                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2204                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2205                                     is_vf, is_netdev);
2206                 if (!f) {
2207                         dev_info(&vsi->back->pdev->dev,
2208                                  "Could not add filter %d for %pM\n",
2209                                  I40E_VLAN_ANY, netdev->dev_addr);
2210                         return -ENOMEM;
2211                 }
2212         }
2213
2214         if (!filter_count) {
2215                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2216                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2217                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2218                                             is_vf, is_netdev);
2219                         if (!add_f) {
2220                                 dev_info(&vsi->back->pdev->dev,
2221                                          "Could not add filter %d for %pM\n",
2222                                          I40E_VLAN_ANY, f->macaddr);
2223                                 return -ENOMEM;
2224                         }
2225                 }
2226         }
2227
2228         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2229             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2230                 return 0;
2231
2232         return i40e_sync_vsi_filters(vsi);
2233 }
2234
2235 /**
2236  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2237  * @netdev: network interface to be adjusted
2238  * @vid: vlan id to be added
2239  *
2240  * net_device_ops implementation for adding vlan ids
2241  **/
2242 #ifdef I40E_FCOE
2243 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2244                          __always_unused __be16 proto, u16 vid)
2245 #else
2246 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2247                                 __always_unused __be16 proto, u16 vid)
2248 #endif
2249 {
2250         struct i40e_netdev_priv *np = netdev_priv(netdev);
2251         struct i40e_vsi *vsi = np->vsi;
2252         int ret = 0;
2253
2254         if (vid > 4095)
2255                 return -EINVAL;
2256
2257         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2258
2259         /* If the network stack called us with vid = 0 then
2260          * it is asking to receive priority tagged packets with
2261          * vlan id 0.  Our HW receives them by default when configured
2262          * to receive untagged packets so there is no need to add an
2263          * extra filter for vlan 0 tagged packets.
2264          */
2265         if (vid)
2266                 ret = i40e_vsi_add_vlan(vsi, vid);
2267
2268         if (!ret && (vid < VLAN_N_VID))
2269                 set_bit(vid, vsi->active_vlans);
2270
2271         return ret;
2272 }
2273
2274 /**
2275  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2276  * @netdev: network interface to be adjusted
2277  * @vid: vlan id to be removed
2278  *
2279  * net_device_ops implementation for removing vlan ids
2280  **/
2281 #ifdef I40E_FCOE
2282 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2283                           __always_unused __be16 proto, u16 vid)
2284 #else
2285 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2286                                  __always_unused __be16 proto, u16 vid)
2287 #endif
2288 {
2289         struct i40e_netdev_priv *np = netdev_priv(netdev);
2290         struct i40e_vsi *vsi = np->vsi;
2291
2292         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2293
2294         /* return code is ignored as there is nothing a user
2295          * can do about failure to remove and a log message was
2296          * already printed from the other function
2297          */
2298         i40e_vsi_kill_vlan(vsi, vid);
2299
2300         clear_bit(vid, vsi->active_vlans);
2301
2302         return 0;
2303 }
2304
2305 /**
2306  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2307  * @vsi: the vsi being brought back up
2308  **/
2309 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2310 {
2311         u16 vid;
2312
2313         if (!vsi->netdev)
2314                 return;
2315
2316         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2317
2318         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2319                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2320                                      vid);
2321 }
2322
2323 /**
2324  * i40e_vsi_add_pvid - Add pvid for the VSI
2325  * @vsi: the vsi being adjusted
2326  * @vid: the vlan id to set as a PVID
2327  **/
2328 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2329 {
2330         struct i40e_vsi_context ctxt;
2331         i40e_status ret;
2332
2333         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2334         vsi->info.pvid = cpu_to_le16(vid);
2335         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2336                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2337                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2338
2339         ctxt.seid = vsi->seid;
2340         ctxt.info = vsi->info;
2341         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2342         if (ret) {
2343                 dev_info(&vsi->back->pdev->dev,
2344                          "add pvid failed, err %s aq_err %s\n",
2345                          i40e_stat_str(&vsi->back->hw, ret),
2346                          i40e_aq_str(&vsi->back->hw,
2347                                      vsi->back->hw.aq.asq_last_status));
2348                 return -ENOENT;
2349         }
2350
2351         return 0;
2352 }
2353
2354 /**
2355  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2356  * @vsi: the vsi being adjusted
2357  *
2358  * Just use the vlan_rx_register() service to put it back to normal
2359  **/
2360 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2361 {
2362         i40e_vlan_stripping_disable(vsi);
2363
2364         vsi->info.pvid = 0;
2365 }
2366
2367 /**
2368  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2369  * @vsi: ptr to the VSI
2370  *
2371  * If this function returns with an error, then it's possible one or
2372  * more of the rings is populated (while the rest are not).  It is the
2373  * callers duty to clean those orphaned rings.
2374  *
2375  * Return 0 on success, negative on failure
2376  **/
2377 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2378 {
2379         int i, err = 0;
2380
2381         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2382                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2383
2384         return err;
2385 }
2386
2387 /**
2388  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2389  * @vsi: ptr to the VSI
2390  *
2391  * Free VSI's transmit software resources
2392  **/
2393 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2394 {
2395         int i;
2396
2397         if (!vsi->tx_rings)
2398                 return;
2399
2400         for (i = 0; i < vsi->num_queue_pairs; i++)
2401                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2402                         i40e_free_tx_resources(vsi->tx_rings[i]);
2403 }
2404
2405 /**
2406  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2407  * @vsi: ptr to the VSI
2408  *
2409  * If this function returns with an error, then it's possible one or
2410  * more of the rings is populated (while the rest are not).  It is the
2411  * callers duty to clean those orphaned rings.
2412  *
2413  * Return 0 on success, negative on failure
2414  **/
2415 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2416 {
2417         int i, err = 0;
2418
2419         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2420                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2421 #ifdef I40E_FCOE
2422         i40e_fcoe_setup_ddp_resources(vsi);
2423 #endif
2424         return err;
2425 }
2426
2427 /**
2428  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2429  * @vsi: ptr to the VSI
2430  *
2431  * Free all receive software resources
2432  **/
2433 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2434 {
2435         int i;
2436
2437         if (!vsi->rx_rings)
2438                 return;
2439
2440         for (i = 0; i < vsi->num_queue_pairs; i++)
2441                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2442                         i40e_free_rx_resources(vsi->rx_rings[i]);
2443 #ifdef I40E_FCOE
2444         i40e_fcoe_free_ddp_resources(vsi);
2445 #endif
2446 }
2447
2448 /**
2449  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2450  * @ring: The Tx ring to configure
2451  *
2452  * This enables/disables XPS for a given Tx descriptor ring
2453  * based on the TCs enabled for the VSI that ring belongs to.
2454  **/
2455 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2456 {
2457         struct i40e_vsi *vsi = ring->vsi;
2458         cpumask_var_t mask;
2459
2460         if (!ring->q_vector || !ring->netdev)
2461                 return;
2462
2463         /* Single TC mode enable XPS */
2464         if (vsi->tc_config.numtc <= 1) {
2465                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2466                         netif_set_xps_queue(ring->netdev,
2467                                             &ring->q_vector->affinity_mask,
2468                                             ring->queue_index);
2469         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2470                 /* Disable XPS to allow selection based on TC */
2471                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2472                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2473                 free_cpumask_var(mask);
2474         }
2475 }
2476
2477 /**
2478  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2479  * @ring: The Tx ring to configure
2480  *
2481  * Configure the Tx descriptor ring in the HMC context.
2482  **/
2483 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2484 {
2485         struct i40e_vsi *vsi = ring->vsi;
2486         u16 pf_q = vsi->base_queue + ring->queue_index;
2487         struct i40e_hw *hw = &vsi->back->hw;
2488         struct i40e_hmc_obj_txq tx_ctx;
2489         i40e_status err = 0;
2490         u32 qtx_ctl = 0;
2491
2492         /* some ATR related tx ring init */
2493         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2494                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2495                 ring->atr_count = 0;
2496         } else {
2497                 ring->atr_sample_rate = 0;
2498         }
2499
2500         /* configure XPS */
2501         i40e_config_xps_tx_ring(ring);
2502
2503         /* clear the context structure first */
2504         memset(&tx_ctx, 0, sizeof(tx_ctx));
2505
2506         tx_ctx.new_context = 1;
2507         tx_ctx.base = (ring->dma / 128);
2508         tx_ctx.qlen = ring->count;
2509         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2510                                                I40E_FLAG_FD_ATR_ENABLED));
2511 #ifdef I40E_FCOE
2512         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2513 #endif
2514         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2515         /* FDIR VSI tx ring can still use RS bit and writebacks */
2516         if (vsi->type != I40E_VSI_FDIR)
2517                 tx_ctx.head_wb_ena = 1;
2518         tx_ctx.head_wb_addr = ring->dma +
2519                               (ring->count * sizeof(struct i40e_tx_desc));
2520
2521         /* As part of VSI creation/update, FW allocates certain
2522          * Tx arbitration queue sets for each TC enabled for
2523          * the VSI. The FW returns the handles to these queue
2524          * sets as part of the response buffer to Add VSI,
2525          * Update VSI, etc. AQ commands. It is expected that
2526          * these queue set handles be associated with the Tx
2527          * queues by the driver as part of the TX queue context
2528          * initialization. This has to be done regardless of
2529          * DCB as by default everything is mapped to TC0.
2530          */
2531         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2532         tx_ctx.rdylist_act = 0;
2533
2534         /* clear the context in the HMC */
2535         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2536         if (err) {
2537                 dev_info(&vsi->back->pdev->dev,
2538                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2539                          ring->queue_index, pf_q, err);
2540                 return -ENOMEM;
2541         }
2542
2543         /* set the context in the HMC */
2544         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2545         if (err) {
2546                 dev_info(&vsi->back->pdev->dev,
2547                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2548                          ring->queue_index, pf_q, err);
2549                 return -ENOMEM;
2550         }
2551
2552         /* Now associate this queue with this PCI function */
2553         if (vsi->type == I40E_VSI_VMDQ2) {
2554                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2555                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2556                            I40E_QTX_CTL_VFVM_INDX_MASK;
2557         } else {
2558                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2559         }
2560
2561         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2562                     I40E_QTX_CTL_PF_INDX_MASK);
2563         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2564         i40e_flush(hw);
2565
2566         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2567
2568         /* cache tail off for easier writes later */
2569         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2570
2571         return 0;
2572 }
2573
2574 /**
2575  * i40e_configure_rx_ring - Configure a receive ring context
2576  * @ring: The Rx ring to configure
2577  *
2578  * Configure the Rx descriptor ring in the HMC context.
2579  **/
2580 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2581 {
2582         struct i40e_vsi *vsi = ring->vsi;
2583         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2584         u16 pf_q = vsi->base_queue + ring->queue_index;
2585         struct i40e_hw *hw = &vsi->back->hw;
2586         struct i40e_hmc_obj_rxq rx_ctx;
2587         i40e_status err = 0;
2588
2589         ring->state = 0;
2590
2591         /* clear the context structure first */
2592         memset(&rx_ctx, 0, sizeof(rx_ctx));
2593
2594         ring->rx_buf_len = vsi->rx_buf_len;
2595         ring->rx_hdr_len = vsi->rx_hdr_len;
2596
2597         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2598         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2599
2600         rx_ctx.base = (ring->dma / 128);
2601         rx_ctx.qlen = ring->count;
2602
2603         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2604                 set_ring_16byte_desc_enabled(ring);
2605                 rx_ctx.dsize = 0;
2606         } else {
2607                 rx_ctx.dsize = 1;
2608         }
2609
2610         rx_ctx.dtype = vsi->dtype;
2611         if (vsi->dtype) {
2612                 set_ring_ps_enabled(ring);
2613                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2614                                   I40E_RX_SPLIT_IP      |
2615                                   I40E_RX_SPLIT_TCP_UDP |
2616                                   I40E_RX_SPLIT_SCTP;
2617         } else {
2618                 rx_ctx.hsplit_0 = 0;
2619         }
2620
2621         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2622                                   (chain_len * ring->rx_buf_len));
2623         if (hw->revision_id == 0)
2624                 rx_ctx.lrxqthresh = 0;
2625         else
2626                 rx_ctx.lrxqthresh = 2;
2627         rx_ctx.crcstrip = 1;
2628         rx_ctx.l2tsel = 1;
2629         rx_ctx.showiv = 1;
2630 #ifdef I40E_FCOE
2631         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2632 #endif
2633         /* set the prefena field to 1 because the manual says to */
2634         rx_ctx.prefena = 1;
2635
2636         /* clear the context in the HMC */
2637         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2638         if (err) {
2639                 dev_info(&vsi->back->pdev->dev,
2640                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2641                          ring->queue_index, pf_q, err);
2642                 return -ENOMEM;
2643         }
2644
2645         /* set the context in the HMC */
2646         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2647         if (err) {
2648                 dev_info(&vsi->back->pdev->dev,
2649                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2650                          ring->queue_index, pf_q, err);
2651                 return -ENOMEM;
2652         }
2653
2654         /* cache tail for quicker writes, and clear the reg before use */
2655         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2656         writel(0, ring->tail);
2657
2658         if (ring_is_ps_enabled(ring)) {
2659                 i40e_alloc_rx_headers(ring);
2660                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2661         } else {
2662                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2663         }
2664
2665         return 0;
2666 }
2667
2668 /**
2669  * i40e_vsi_configure_tx - Configure the VSI for Tx
2670  * @vsi: VSI structure describing this set of rings and resources
2671  *
2672  * Configure the Tx VSI for operation.
2673  **/
2674 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2675 {
2676         int err = 0;
2677         u16 i;
2678
2679         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2680                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2681
2682         return err;
2683 }
2684
2685 /**
2686  * i40e_vsi_configure_rx - Configure the VSI for Rx
2687  * @vsi: the VSI being configured
2688  *
2689  * Configure the Rx VSI for operation.
2690  **/
2691 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2692 {
2693         int err = 0;
2694         u16 i;
2695
2696         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2697                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2698                                + ETH_FCS_LEN + VLAN_HLEN;
2699         else
2700                 vsi->max_frame = I40E_RXBUFFER_2048;
2701
2702         /* figure out correct receive buffer length */
2703         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2704                                     I40E_FLAG_RX_PS_ENABLED)) {
2705         case I40E_FLAG_RX_1BUF_ENABLED:
2706                 vsi->rx_hdr_len = 0;
2707                 vsi->rx_buf_len = vsi->max_frame;
2708                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2709                 break;
2710         case I40E_FLAG_RX_PS_ENABLED:
2711                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2712                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2713                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2714                 break;
2715         default:
2716                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2717                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2718                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2719                 break;
2720         }
2721
2722 #ifdef I40E_FCOE
2723         /* setup rx buffer for FCoE */
2724         if ((vsi->type == I40E_VSI_FCOE) &&
2725             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2726                 vsi->rx_hdr_len = 0;
2727                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2728                 vsi->max_frame = I40E_RXBUFFER_3072;
2729                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2730         }
2731
2732 #endif /* I40E_FCOE */
2733         /* round up for the chip's needs */
2734         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2735                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2736         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2737                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2738
2739         /* set up individual rings */
2740         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2741                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2742
2743         return err;
2744 }
2745
2746 /**
2747  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2748  * @vsi: ptr to the VSI
2749  **/
2750 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2751 {
2752         struct i40e_ring *tx_ring, *rx_ring;
2753         u16 qoffset, qcount;
2754         int i, n;
2755
2756         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2757                 /* Reset the TC information */
2758                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2759                         rx_ring = vsi->rx_rings[i];
2760                         tx_ring = vsi->tx_rings[i];
2761                         rx_ring->dcb_tc = 0;
2762                         tx_ring->dcb_tc = 0;
2763                 }
2764         }
2765
2766         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2767                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
2768                         continue;
2769
2770                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2771                 qcount = vsi->tc_config.tc_info[n].qcount;
2772                 for (i = qoffset; i < (qoffset + qcount); i++) {
2773                         rx_ring = vsi->rx_rings[i];
2774                         tx_ring = vsi->tx_rings[i];
2775                         rx_ring->dcb_tc = n;
2776                         tx_ring->dcb_tc = n;
2777                 }
2778         }
2779 }
2780
2781 /**
2782  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2783  * @vsi: ptr to the VSI
2784  **/
2785 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2786 {
2787         if (vsi->netdev)
2788                 i40e_set_rx_mode(vsi->netdev);
2789 }
2790
2791 /**
2792  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2793  * @vsi: Pointer to the targeted VSI
2794  *
2795  * This function replays the hlist on the hw where all the SB Flow Director
2796  * filters were saved.
2797  **/
2798 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2799 {
2800         struct i40e_fdir_filter *filter;
2801         struct i40e_pf *pf = vsi->back;
2802         struct hlist_node *node;
2803
2804         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2805                 return;
2806
2807         hlist_for_each_entry_safe(filter, node,
2808                                   &pf->fdir_filter_list, fdir_node) {
2809                 i40e_add_del_fdir(vsi, filter, true);
2810         }
2811 }
2812
2813 /**
2814  * i40e_vsi_configure - Set up the VSI for action
2815  * @vsi: the VSI being configured
2816  **/
2817 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2818 {
2819         int err;
2820
2821         i40e_set_vsi_rx_mode(vsi);
2822         i40e_restore_vlan(vsi);
2823         i40e_vsi_config_dcb_rings(vsi);
2824         err = i40e_vsi_configure_tx(vsi);
2825         if (!err)
2826                 err = i40e_vsi_configure_rx(vsi);
2827
2828         return err;
2829 }
2830
2831 /**
2832  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2833  * @vsi: the VSI being configured
2834  **/
2835 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2836 {
2837         struct i40e_pf *pf = vsi->back;
2838         struct i40e_q_vector *q_vector;
2839         struct i40e_hw *hw = &pf->hw;
2840         u16 vector;
2841         int i, q;
2842         u32 val;
2843         u32 qp;
2844
2845         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2846          * and PFINT_LNKLSTn registers, e.g.:
2847          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2848          */
2849         qp = vsi->base_queue;
2850         vector = vsi->base_vector;
2851         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2852                 q_vector = vsi->q_vectors[i];
2853                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2854                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2855                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2856                      q_vector->rx.itr);
2857                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2858                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2859                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2860                      q_vector->tx.itr);
2861
2862                 /* Linked list for the queuepairs assigned to this vector */
2863                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2864                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2865                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2866                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2867                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2868                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2869                               (I40E_QUEUE_TYPE_TX
2870                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2871
2872                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2873
2874                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2875                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2876                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2877                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2878                               (I40E_QUEUE_TYPE_RX
2879                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2880
2881                         /* Terminate the linked list */
2882                         if (q == (q_vector->num_ringpairs - 1))
2883                                 val |= (I40E_QUEUE_END_OF_LIST
2884                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2885
2886                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2887                         qp++;
2888                 }
2889         }
2890
2891         i40e_flush(hw);
2892 }
2893
2894 /**
2895  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2896  * @hw: ptr to the hardware info
2897  **/
2898 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2899 {
2900         struct i40e_hw *hw = &pf->hw;
2901         u32 val;
2902
2903         /* clear things first */
2904         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2905         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2906
2907         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2908               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2909               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2910               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2911               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2912               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2913               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2914               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2915
2916         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
2917                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
2918
2919         if (pf->flags & I40E_FLAG_PTP)
2920                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2921
2922         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2923
2924         /* SW_ITR_IDX = 0, but don't change INTENA */
2925         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2926                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2927
2928         /* OTHER_ITR_IDX = 0 */
2929         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2930 }
2931
2932 /**
2933  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2934  * @vsi: the VSI being configured
2935  **/
2936 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2937 {
2938         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2939         struct i40e_pf *pf = vsi->back;
2940         struct i40e_hw *hw = &pf->hw;
2941         u32 val;
2942
2943         /* set the ITR configuration */
2944         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2945         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2946         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2947         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2948         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2949         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2950
2951         i40e_enable_misc_int_causes(pf);
2952
2953         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2954         wr32(hw, I40E_PFINT_LNKLST0, 0);
2955
2956         /* Associate the queue pair to the vector and enable the queue int */
2957         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2958               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2959               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2960
2961         wr32(hw, I40E_QINT_RQCTL(0), val);
2962
2963         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2964               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2965               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2966
2967         wr32(hw, I40E_QINT_TQCTL(0), val);
2968         i40e_flush(hw);
2969 }
2970
2971 /**
2972  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2973  * @pf: board private structure
2974  **/
2975 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2976 {
2977         struct i40e_hw *hw = &pf->hw;
2978
2979         wr32(hw, I40E_PFINT_DYN_CTL0,
2980              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2981         i40e_flush(hw);
2982 }
2983
2984 /**
2985  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2986  * @pf: board private structure
2987  **/
2988 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2989 {
2990         struct i40e_hw *hw = &pf->hw;
2991         u32 val;
2992
2993         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2994               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2995               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2996
2997         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2998         i40e_flush(hw);
2999 }
3000
3001 /**
3002  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
3003  * @vsi: pointer to a vsi
3004  * @vector: enable a particular Hw Interrupt vector
3005  **/
3006 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
3007 {
3008         struct i40e_pf *pf = vsi->back;
3009         struct i40e_hw *hw = &pf->hw;
3010         u32 val;
3011
3012         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
3013               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
3014               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3015         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3016         /* skip the flush */
3017 }
3018
3019 /**
3020  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3021  * @vsi: pointer to a vsi
3022  * @vector: disable a particular Hw Interrupt vector
3023  **/
3024 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3025 {
3026         struct i40e_pf *pf = vsi->back;
3027         struct i40e_hw *hw = &pf->hw;
3028         u32 val;
3029
3030         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3031         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3032         i40e_flush(hw);
3033 }
3034
3035 /**
3036  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3037  * @irq: interrupt number
3038  * @data: pointer to a q_vector
3039  **/
3040 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3041 {
3042         struct i40e_q_vector *q_vector = data;
3043
3044         if (!q_vector->tx.ring && !q_vector->rx.ring)
3045                 return IRQ_HANDLED;
3046
3047         napi_schedule(&q_vector->napi);
3048
3049         return IRQ_HANDLED;
3050 }
3051
3052 /**
3053  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3054  * @vsi: the VSI being configured
3055  * @basename: name for the vector
3056  *
3057  * Allocates MSI-X vectors and requests interrupts from the kernel.
3058  **/
3059 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3060 {
3061         int q_vectors = vsi->num_q_vectors;
3062         struct i40e_pf *pf = vsi->back;
3063         int base = vsi->base_vector;
3064         int rx_int_idx = 0;
3065         int tx_int_idx = 0;
3066         int vector, err;
3067
3068         for (vector = 0; vector < q_vectors; vector++) {
3069                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3070
3071                 if (q_vector->tx.ring && q_vector->rx.ring) {
3072                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3073                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3074                         tx_int_idx++;
3075                 } else if (q_vector->rx.ring) {
3076                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3077                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3078                 } else if (q_vector->tx.ring) {
3079                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3080                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3081                 } else {
3082                         /* skip this unused q_vector */
3083                         continue;
3084                 }
3085                 err = request_irq(pf->msix_entries[base + vector].vector,
3086                                   vsi->irq_handler,
3087                                   0,
3088                                   q_vector->name,
3089                                   q_vector);
3090                 if (err) {
3091                         dev_info(&pf->pdev->dev,
3092                                  "%s: request_irq failed, error: %d\n",
3093                                  __func__, err);
3094                         goto free_queue_irqs;
3095                 }
3096                 /* assign the mask for this irq */
3097                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3098                                       &q_vector->affinity_mask);
3099         }
3100
3101         vsi->irqs_ready = true;
3102         return 0;
3103
3104 free_queue_irqs:
3105         while (vector) {
3106                 vector--;
3107                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3108                                       NULL);
3109                 free_irq(pf->msix_entries[base + vector].vector,
3110                          &(vsi->q_vectors[vector]));
3111         }
3112         return err;
3113 }
3114
3115 /**
3116  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3117  * @vsi: the VSI being un-configured
3118  **/
3119 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3120 {
3121         struct i40e_pf *pf = vsi->back;
3122         struct i40e_hw *hw = &pf->hw;
3123         int base = vsi->base_vector;
3124         int i;
3125
3126         for (i = 0; i < vsi->num_queue_pairs; i++) {
3127                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3128                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3129         }
3130
3131         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3132                 for (i = vsi->base_vector;
3133                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3134                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3135
3136                 i40e_flush(hw);
3137                 for (i = 0; i < vsi->num_q_vectors; i++)
3138                         synchronize_irq(pf->msix_entries[i + base].vector);
3139         } else {
3140                 /* Legacy and MSI mode - this stops all interrupt handling */
3141                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3142                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3143                 i40e_flush(hw);
3144                 synchronize_irq(pf->pdev->irq);
3145         }
3146 }
3147
3148 /**
3149  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3150  * @vsi: the VSI being configured
3151  **/
3152 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3153 {
3154         struct i40e_pf *pf = vsi->back;
3155         int i;
3156
3157         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3158                 for (i = vsi->base_vector;
3159                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3160                         i40e_irq_dynamic_enable(vsi, i);
3161         } else {
3162                 i40e_irq_dynamic_enable_icr0(pf);
3163         }
3164
3165         i40e_flush(&pf->hw);
3166         return 0;
3167 }
3168
3169 /**
3170  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3171  * @pf: board private structure
3172  **/
3173 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3174 {
3175         /* Disable ICR 0 */
3176         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3177         i40e_flush(&pf->hw);
3178 }
3179
3180 /**
3181  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3182  * @irq: interrupt number
3183  * @data: pointer to a q_vector
3184  *
3185  * This is the handler used for all MSI/Legacy interrupts, and deals
3186  * with both queue and non-queue interrupts.  This is also used in
3187  * MSIX mode to handle the non-queue interrupts.
3188  **/
3189 static irqreturn_t i40e_intr(int irq, void *data)
3190 {
3191         struct i40e_pf *pf = (struct i40e_pf *)data;
3192         struct i40e_hw *hw = &pf->hw;
3193         irqreturn_t ret = IRQ_NONE;
3194         u32 icr0, icr0_remaining;
3195         u32 val, ena_mask;
3196
3197         icr0 = rd32(hw, I40E_PFINT_ICR0);
3198         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3199
3200         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3201         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3202                 goto enable_intr;
3203
3204         /* if interrupt but no bits showing, must be SWINT */
3205         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3206             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3207                 pf->sw_int_count++;
3208
3209         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3210             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3211                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3212                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3213                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3214         }
3215
3216         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3217         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3218
3219                 /* temporarily disable queue cause for NAPI processing */
3220                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3221                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3222                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3223
3224                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3225                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3226                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3227
3228                 if (!test_bit(__I40E_DOWN, &pf->state))
3229                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3230         }
3231
3232         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3233                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3234                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3235         }
3236
3237         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3238                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3239                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3240         }
3241
3242         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3243                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3244                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3245         }
3246
3247         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3248                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3249                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3250                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3251                 val = rd32(hw, I40E_GLGEN_RSTAT);
3252                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3253                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3254                 if (val == I40E_RESET_CORER) {
3255                         pf->corer_count++;
3256                 } else if (val == I40E_RESET_GLOBR) {
3257                         pf->globr_count++;
3258                 } else if (val == I40E_RESET_EMPR) {
3259                         pf->empr_count++;
3260                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3261                 }
3262         }
3263
3264         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3265                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3266                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3267                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3268                          rd32(hw, I40E_PFHMC_ERRORINFO),
3269                          rd32(hw, I40E_PFHMC_ERRORDATA));
3270         }
3271
3272         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3273                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3274
3275                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3276                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3277                         i40e_ptp_tx_hwtstamp(pf);
3278                 }
3279         }
3280
3281         /* If a critical error is pending we have no choice but to reset the
3282          * device.
3283          * Report and mask out any remaining unexpected interrupts.
3284          */
3285         icr0_remaining = icr0 & ena_mask;
3286         if (icr0_remaining) {
3287                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3288                          icr0_remaining);
3289                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3290                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3291                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3292                         dev_info(&pf->pdev->dev, "device will be reset\n");
3293                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3294                         i40e_service_event_schedule(pf);
3295                 }
3296                 ena_mask &= ~icr0_remaining;
3297         }
3298         ret = IRQ_HANDLED;
3299
3300 enable_intr:
3301         /* re-enable interrupt causes */
3302         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3303         if (!test_bit(__I40E_DOWN, &pf->state)) {
3304                 i40e_service_event_schedule(pf);
3305                 i40e_irq_dynamic_enable_icr0(pf);
3306         }
3307
3308         return ret;
3309 }
3310
3311 /**
3312  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3313  * @tx_ring:  tx ring to clean
3314  * @budget:   how many cleans we're allowed
3315  *
3316  * Returns true if there's any budget left (e.g. the clean is finished)
3317  **/
3318 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3319 {
3320         struct i40e_vsi *vsi = tx_ring->vsi;
3321         u16 i = tx_ring->next_to_clean;
3322         struct i40e_tx_buffer *tx_buf;
3323         struct i40e_tx_desc *tx_desc;
3324
3325         tx_buf = &tx_ring->tx_bi[i];
3326         tx_desc = I40E_TX_DESC(tx_ring, i);
3327         i -= tx_ring->count;
3328
3329         do {
3330                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3331
3332                 /* if next_to_watch is not set then there is no work pending */
3333                 if (!eop_desc)
3334                         break;
3335
3336                 /* prevent any other reads prior to eop_desc */
3337                 read_barrier_depends();
3338
3339                 /* if the descriptor isn't done, no work yet to do */
3340                 if (!(eop_desc->cmd_type_offset_bsz &
3341                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3342                         break;
3343
3344                 /* clear next_to_watch to prevent false hangs */
3345                 tx_buf->next_to_watch = NULL;
3346
3347                 tx_desc->buffer_addr = 0;
3348                 tx_desc->cmd_type_offset_bsz = 0;
3349                 /* move past filter desc */
3350                 tx_buf++;
3351                 tx_desc++;
3352                 i++;
3353                 if (unlikely(!i)) {
3354                         i -= tx_ring->count;
3355                         tx_buf = tx_ring->tx_bi;
3356                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3357                 }
3358                 /* unmap skb header data */
3359                 dma_unmap_single(tx_ring->dev,
3360                                  dma_unmap_addr(tx_buf, dma),
3361                                  dma_unmap_len(tx_buf, len),
3362                                  DMA_TO_DEVICE);
3363                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3364                         kfree(tx_buf->raw_buf);
3365
3366                 tx_buf->raw_buf = NULL;
3367                 tx_buf->tx_flags = 0;
3368                 tx_buf->next_to_watch = NULL;
3369                 dma_unmap_len_set(tx_buf, len, 0);
3370                 tx_desc->buffer_addr = 0;
3371                 tx_desc->cmd_type_offset_bsz = 0;
3372
3373                 /* move us past the eop_desc for start of next FD desc */
3374                 tx_buf++;
3375                 tx_desc++;
3376                 i++;
3377                 if (unlikely(!i)) {
3378                         i -= tx_ring->count;
3379                         tx_buf = tx_ring->tx_bi;
3380                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3381                 }
3382
3383                 /* update budget accounting */
3384                 budget--;
3385         } while (likely(budget));
3386
3387         i += tx_ring->count;
3388         tx_ring->next_to_clean = i;
3389
3390         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3391                 i40e_irq_dynamic_enable(vsi,
3392                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3393         }
3394         return budget > 0;
3395 }
3396
3397 /**
3398  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3399  * @irq: interrupt number
3400  * @data: pointer to a q_vector
3401  **/
3402 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3403 {
3404         struct i40e_q_vector *q_vector = data;
3405         struct i40e_vsi *vsi;
3406
3407         if (!q_vector->tx.ring)
3408                 return IRQ_HANDLED;
3409
3410         vsi = q_vector->tx.ring->vsi;
3411         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3412
3413         return IRQ_HANDLED;
3414 }
3415
3416 /**
3417  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3418  * @vsi: the VSI being configured
3419  * @v_idx: vector index
3420  * @qp_idx: queue pair index
3421  **/
3422 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3423 {
3424         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3425         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3426         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3427
3428         tx_ring->q_vector = q_vector;
3429         tx_ring->next = q_vector->tx.ring;
3430         q_vector->tx.ring = tx_ring;
3431         q_vector->tx.count++;
3432
3433         rx_ring->q_vector = q_vector;
3434         rx_ring->next = q_vector->rx.ring;
3435         q_vector->rx.ring = rx_ring;
3436         q_vector->rx.count++;
3437 }
3438
3439 /**
3440  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3441  * @vsi: the VSI being configured
3442  *
3443  * This function maps descriptor rings to the queue-specific vectors
3444  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3445  * one vector per queue pair, but on a constrained vector budget, we
3446  * group the queue pairs as "efficiently" as possible.
3447  **/
3448 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3449 {
3450         int qp_remaining = vsi->num_queue_pairs;
3451         int q_vectors = vsi->num_q_vectors;
3452         int num_ringpairs;
3453         int v_start = 0;
3454         int qp_idx = 0;
3455
3456         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3457          * group them so there are multiple queues per vector.
3458          * It is also important to go through all the vectors available to be
3459          * sure that if we don't use all the vectors, that the remaining vectors
3460          * are cleared. This is especially important when decreasing the
3461          * number of queues in use.
3462          */
3463         for (; v_start < q_vectors; v_start++) {
3464                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3465
3466                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3467
3468                 q_vector->num_ringpairs = num_ringpairs;
3469
3470                 q_vector->rx.count = 0;
3471                 q_vector->tx.count = 0;
3472                 q_vector->rx.ring = NULL;
3473                 q_vector->tx.ring = NULL;
3474
3475                 while (num_ringpairs--) {
3476                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3477                         qp_idx++;
3478                         qp_remaining--;
3479                 }
3480         }
3481 }
3482
3483 /**
3484  * i40e_vsi_request_irq - Request IRQ from the OS
3485  * @vsi: the VSI being configured
3486  * @basename: name for the vector
3487  **/
3488 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3489 {
3490         struct i40e_pf *pf = vsi->back;
3491         int err;
3492
3493         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3494                 err = i40e_vsi_request_irq_msix(vsi, basename);
3495         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3496                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3497                                   pf->int_name, pf);
3498         else
3499                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3500                                   pf->int_name, pf);
3501
3502         if (err)
3503                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3504
3505         return err;
3506 }
3507
3508 #ifdef CONFIG_NET_POLL_CONTROLLER
3509 /**
3510  * i40e_netpoll - A Polling 'interrupt'handler
3511  * @netdev: network interface device structure
3512  *
3513  * This is used by netconsole to send skbs without having to re-enable
3514  * interrupts.  It's not called while the normal interrupt routine is executing.
3515  **/
3516 #ifdef I40E_FCOE
3517 void i40e_netpoll(struct net_device *netdev)
3518 #else
3519 static void i40e_netpoll(struct net_device *netdev)
3520 #endif
3521 {
3522         struct i40e_netdev_priv *np = netdev_priv(netdev);
3523         struct i40e_vsi *vsi = np->vsi;
3524         struct i40e_pf *pf = vsi->back;
3525         int i;
3526
3527         /* if interface is down do nothing */
3528         if (test_bit(__I40E_DOWN, &vsi->state))
3529                 return;
3530
3531         pf->flags |= I40E_FLAG_IN_NETPOLL;
3532         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3533                 for (i = 0; i < vsi->num_q_vectors; i++)
3534                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3535         } else {
3536                 i40e_intr(pf->pdev->irq, netdev);
3537         }
3538         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3539 }
3540 #endif
3541
3542 /**
3543  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3544  * @pf: the PF being configured
3545  * @pf_q: the PF queue
3546  * @enable: enable or disable state of the queue
3547  *
3548  * This routine will wait for the given Tx queue of the PF to reach the
3549  * enabled or disabled state.
3550  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3551  * multiple retries; else will return 0 in case of success.
3552  **/
3553 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3554 {
3555         int i;
3556         u32 tx_reg;
3557
3558         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3559                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3560                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3561                         break;
3562
3563                 usleep_range(10, 20);
3564         }
3565         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3566                 return -ETIMEDOUT;
3567
3568         return 0;
3569 }
3570
3571 /**
3572  * i40e_vsi_control_tx - Start or stop a VSI's rings
3573  * @vsi: the VSI being configured
3574  * @enable: start or stop the rings
3575  **/
3576 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3577 {
3578         struct i40e_pf *pf = vsi->back;
3579         struct i40e_hw *hw = &pf->hw;
3580         int i, j, pf_q, ret = 0;
3581         u32 tx_reg;
3582
3583         pf_q = vsi->base_queue;
3584         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3585
3586                 /* warn the TX unit of coming changes */
3587                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3588                 if (!enable)
3589                         usleep_range(10, 20);
3590
3591                 for (j = 0; j < 50; j++) {
3592                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3593                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3594                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3595                                 break;
3596                         usleep_range(1000, 2000);
3597                 }
3598                 /* Skip if the queue is already in the requested state */
3599                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3600                         continue;
3601
3602                 /* turn on/off the queue */
3603                 if (enable) {
3604                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3605                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3606                 } else {
3607                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3608                 }
3609
3610                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3611                 /* No waiting for the Tx queue to disable */
3612                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3613                         continue;
3614
3615                 /* wait for the change to finish */
3616                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3617                 if (ret) {
3618                         dev_info(&pf->pdev->dev,
3619                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3620                                  __func__, vsi->seid, pf_q,
3621                                  (enable ? "en" : "dis"));
3622                         break;
3623                 }
3624         }
3625
3626         if (hw->revision_id == 0)
3627                 mdelay(50);
3628         return ret;
3629 }
3630
3631 /**
3632  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3633  * @pf: the PF being configured
3634  * @pf_q: the PF queue
3635  * @enable: enable or disable state of the queue
3636  *
3637  * This routine will wait for the given Rx queue of the PF to reach the
3638  * enabled or disabled state.
3639  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3640  * multiple retries; else will return 0 in case of success.
3641  **/
3642 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3643 {
3644         int i;
3645         u32 rx_reg;
3646
3647         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3648                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3649                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3650                         break;
3651
3652                 usleep_range(10, 20);
3653         }
3654         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3655                 return -ETIMEDOUT;
3656
3657         return 0;
3658 }
3659
3660 /**
3661  * i40e_vsi_control_rx - Start or stop a VSI's rings
3662  * @vsi: the VSI being configured
3663  * @enable: start or stop the rings
3664  **/
3665 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3666 {
3667         struct i40e_pf *pf = vsi->back;
3668         struct i40e_hw *hw = &pf->hw;
3669         int i, j, pf_q, ret = 0;
3670         u32 rx_reg;
3671
3672         pf_q = vsi->base_queue;
3673         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3674                 for (j = 0; j < 50; j++) {
3675                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3676                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3677                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3678                                 break;
3679                         usleep_range(1000, 2000);
3680                 }
3681
3682                 /* Skip if the queue is already in the requested state */
3683                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3684                         continue;
3685
3686                 /* turn on/off the queue */
3687                 if (enable)
3688                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3689                 else
3690                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3691                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3692
3693                 /* wait for the change to finish */
3694                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3695                 if (ret) {
3696                         dev_info(&pf->pdev->dev,
3697                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3698                                  __func__, vsi->seid, pf_q,
3699                                  (enable ? "en" : "dis"));
3700                         break;
3701                 }
3702         }
3703
3704         return ret;
3705 }
3706
3707 /**
3708  * i40e_vsi_control_rings - Start or stop a VSI's rings
3709  * @vsi: the VSI being configured
3710  * @enable: start or stop the rings
3711  **/
3712 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3713 {
3714         int ret = 0;
3715
3716         /* do rx first for enable and last for disable */
3717         if (request) {
3718                 ret = i40e_vsi_control_rx(vsi, request);
3719                 if (ret)
3720                         return ret;
3721                 ret = i40e_vsi_control_tx(vsi, request);
3722         } else {
3723                 /* Ignore return value, we need to shutdown whatever we can */
3724                 i40e_vsi_control_tx(vsi, request);
3725                 i40e_vsi_control_rx(vsi, request);
3726         }
3727
3728         return ret;
3729 }
3730
3731 /**
3732  * i40e_vsi_free_irq - Free the irq association with the OS
3733  * @vsi: the VSI being configured
3734  **/
3735 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3736 {
3737         struct i40e_pf *pf = vsi->back;
3738         struct i40e_hw *hw = &pf->hw;
3739         int base = vsi->base_vector;
3740         u32 val, qp;
3741         int i;
3742
3743         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3744                 if (!vsi->q_vectors)
3745                         return;
3746
3747                 if (!vsi->irqs_ready)
3748                         return;
3749
3750                 vsi->irqs_ready = false;
3751                 for (i = 0; i < vsi->num_q_vectors; i++) {
3752                         u16 vector = i + base;
3753
3754                         /* free only the irqs that were actually requested */
3755                         if (!vsi->q_vectors[i] ||
3756                             !vsi->q_vectors[i]->num_ringpairs)
3757                                 continue;
3758
3759                         /* clear the affinity_mask in the IRQ descriptor */
3760                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3761                                               NULL);
3762                         free_irq(pf->msix_entries[vector].vector,
3763                                  vsi->q_vectors[i]);
3764
3765                         /* Tear down the interrupt queue link list
3766                          *
3767                          * We know that they come in pairs and always
3768                          * the Rx first, then the Tx.  To clear the
3769                          * link list, stick the EOL value into the
3770                          * next_q field of the registers.
3771                          */
3772                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3773                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3774                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3775                         val |= I40E_QUEUE_END_OF_LIST
3776                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3777                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3778
3779                         while (qp != I40E_QUEUE_END_OF_LIST) {
3780                                 u32 next;
3781
3782                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3783
3784                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3785                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3786                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3787                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3788
3789                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3790                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3791
3792                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3793
3794                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3795
3796                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3797                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3798
3799                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3800                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3801                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3802                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3803
3804                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3805                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3806
3807                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3808                                 qp = next;
3809                         }
3810                 }
3811         } else {
3812                 free_irq(pf->pdev->irq, pf);
3813
3814                 val = rd32(hw, I40E_PFINT_LNKLST0);
3815                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3816                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3817                 val |= I40E_QUEUE_END_OF_LIST
3818                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3819                 wr32(hw, I40E_PFINT_LNKLST0, val);
3820
3821                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3822                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3823                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3824                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3825                          I40E_QINT_RQCTL_INTEVENT_MASK);
3826
3827                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3828                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3829
3830                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3831
3832                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3833
3834                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3835                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3836                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3837                          I40E_QINT_TQCTL_INTEVENT_MASK);
3838
3839                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3840                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3841
3842                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3843         }
3844 }
3845
3846 /**
3847  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3848  * @vsi: the VSI being configured
3849  * @v_idx: Index of vector to be freed
3850  *
3851  * This function frees the memory allocated to the q_vector.  In addition if
3852  * NAPI is enabled it will delete any references to the NAPI struct prior
3853  * to freeing the q_vector.
3854  **/
3855 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3856 {
3857         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3858         struct i40e_ring *ring;
3859
3860         if (!q_vector)
3861                 return;
3862
3863         /* disassociate q_vector from rings */
3864         i40e_for_each_ring(ring, q_vector->tx)
3865                 ring->q_vector = NULL;
3866
3867         i40e_for_each_ring(ring, q_vector->rx)
3868                 ring->q_vector = NULL;
3869
3870         /* only VSI w/ an associated netdev is set up w/ NAPI */
3871         if (vsi->netdev)
3872                 netif_napi_del(&q_vector->napi);
3873
3874         vsi->q_vectors[v_idx] = NULL;
3875
3876         kfree_rcu(q_vector, rcu);
3877 }
3878
3879 /**
3880  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3881  * @vsi: the VSI being un-configured
3882  *
3883  * This frees the memory allocated to the q_vectors and
3884  * deletes references to the NAPI struct.
3885  **/
3886 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3887 {
3888         int v_idx;
3889
3890         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3891                 i40e_free_q_vector(vsi, v_idx);
3892 }
3893
3894 /**
3895  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3896  * @pf: board private structure
3897  **/
3898 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3899 {
3900         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3901         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3902                 pci_disable_msix(pf->pdev);
3903                 kfree(pf->msix_entries);
3904                 pf->msix_entries = NULL;
3905                 kfree(pf->irq_pile);
3906                 pf->irq_pile = NULL;
3907         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3908                 pci_disable_msi(pf->pdev);
3909         }
3910         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3911 }
3912
3913 /**
3914  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3915  * @pf: board private structure
3916  *
3917  * We go through and clear interrupt specific resources and reset the structure
3918  * to pre-load conditions
3919  **/
3920 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3921 {
3922         int i;
3923
3924         i40e_stop_misc_vector(pf);
3925         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3926                 synchronize_irq(pf->msix_entries[0].vector);
3927                 free_irq(pf->msix_entries[0].vector, pf);
3928         }
3929
3930         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3931         for (i = 0; i < pf->num_alloc_vsi; i++)
3932                 if (pf->vsi[i])
3933                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3934         i40e_reset_interrupt_capability(pf);
3935 }
3936
3937 /**
3938  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3939  * @vsi: the VSI being configured
3940  **/
3941 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3942 {
3943         int q_idx;
3944
3945         if (!vsi->netdev)
3946                 return;
3947
3948         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3949                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3950 }
3951
3952 /**
3953  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3954  * @vsi: the VSI being configured
3955  **/
3956 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3957 {
3958         int q_idx;
3959
3960         if (!vsi->netdev)
3961                 return;
3962
3963         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3964                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3965 }
3966
3967 /**
3968  * i40e_vsi_close - Shut down a VSI
3969  * @vsi: the vsi to be quelled
3970  **/
3971 static void i40e_vsi_close(struct i40e_vsi *vsi)
3972 {
3973         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3974                 i40e_down(vsi);
3975         i40e_vsi_free_irq(vsi);
3976         i40e_vsi_free_tx_resources(vsi);
3977         i40e_vsi_free_rx_resources(vsi);
3978 }
3979
3980 /**
3981  * i40e_quiesce_vsi - Pause a given VSI
3982  * @vsi: the VSI being paused
3983  **/
3984 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3985 {
3986         if (test_bit(__I40E_DOWN, &vsi->state))
3987                 return;
3988
3989         /* No need to disable FCoE VSI when Tx suspended */
3990         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
3991             vsi->type == I40E_VSI_FCOE) {
3992                 dev_dbg(&vsi->back->pdev->dev,
3993                         "%s: VSI seid %d skipping FCoE VSI disable\n",
3994                          __func__, vsi->seid);
3995                 return;
3996         }
3997
3998         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3999         if (vsi->netdev && netif_running(vsi->netdev)) {
4000                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4001         } else {
4002                 i40e_vsi_close(vsi);
4003         }
4004 }
4005
4006 /**
4007  * i40e_unquiesce_vsi - Resume a given VSI
4008  * @vsi: the VSI being resumed
4009  **/
4010 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4011 {
4012         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4013                 return;
4014
4015         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4016         if (vsi->netdev && netif_running(vsi->netdev))
4017                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4018         else
4019                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4020 }
4021
4022 /**
4023  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4024  * @pf: the PF
4025  **/
4026 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4027 {
4028         int v;
4029
4030         for (v = 0; v < pf->num_alloc_vsi; v++) {
4031                 if (pf->vsi[v])
4032                         i40e_quiesce_vsi(pf->vsi[v]);
4033         }
4034 }
4035
4036 /**
4037  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4038  * @pf: the PF
4039  **/
4040 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4041 {
4042         int v;
4043
4044         for (v = 0; v < pf->num_alloc_vsi; v++) {
4045                 if (pf->vsi[v])
4046                         i40e_unquiesce_vsi(pf->vsi[v]);
4047         }
4048 }
4049
4050 #ifdef CONFIG_I40E_DCB
4051 /**
4052  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4053  * @vsi: the VSI being configured
4054  *
4055  * This function waits for the given VSI's Tx queues to be disabled.
4056  **/
4057 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4058 {
4059         struct i40e_pf *pf = vsi->back;
4060         int i, pf_q, ret;
4061
4062         pf_q = vsi->base_queue;
4063         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4064                 /* Check and wait for the disable status of the queue */
4065                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4066                 if (ret) {
4067                         dev_info(&pf->pdev->dev,
4068                                  "%s: VSI seid %d Tx ring %d disable timeout\n",
4069                                  __func__, vsi->seid, pf_q);
4070                         return ret;
4071                 }
4072         }
4073
4074         return 0;
4075 }
4076
4077 /**
4078  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4079  * @pf: the PF
4080  *
4081  * This function waits for the Tx queues to be in disabled state for all the
4082  * VSIs that are managed by this PF.
4083  **/
4084 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4085 {
4086         int v, ret = 0;
4087
4088         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4089                 /* No need to wait for FCoE VSI queues */
4090                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4091                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4092                         if (ret)
4093                                 break;
4094                 }
4095         }
4096
4097         return ret;
4098 }
4099
4100 #endif
4101 /**
4102  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4103  * @pf: pointer to PF
4104  *
4105  * Get TC map for ISCSI PF type that will include iSCSI TC
4106  * and LAN TC.
4107  **/
4108 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4109 {
4110         struct i40e_dcb_app_priority_table app;
4111         struct i40e_hw *hw = &pf->hw;
4112         u8 enabled_tc = 1; /* TC0 is always enabled */
4113         u8 tc, i;
4114         /* Get the iSCSI APP TLV */
4115         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4116
4117         for (i = 0; i < dcbcfg->numapps; i++) {
4118                 app = dcbcfg->app[i];
4119                 if (app.selector == I40E_APP_SEL_TCPIP &&
4120                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4121                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4122                         enabled_tc |= BIT_ULL(tc);
4123                         break;
4124                 }
4125         }
4126
4127         return enabled_tc;
4128 }
4129
4130 /**
4131  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4132  * @dcbcfg: the corresponding DCBx configuration structure
4133  *
4134  * Return the number of TCs from given DCBx configuration
4135  **/
4136 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4137 {
4138         u8 num_tc = 0;
4139         int i;
4140
4141         /* Scan the ETS Config Priority Table to find
4142          * traffic class enabled for a given priority
4143          * and use the traffic class index to get the
4144          * number of traffic classes enabled
4145          */
4146         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4147                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4148                         num_tc = dcbcfg->etscfg.prioritytable[i];
4149         }
4150
4151         /* Traffic class index starts from zero so
4152          * increment to return the actual count
4153          */
4154         return num_tc + 1;
4155 }
4156
4157 /**
4158  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4159  * @dcbcfg: the corresponding DCBx configuration structure
4160  *
4161  * Query the current DCB configuration and return the number of
4162  * traffic classes enabled from the given DCBX config
4163  **/
4164 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4165 {
4166         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4167         u8 enabled_tc = 1;
4168         u8 i;
4169
4170         for (i = 0; i < num_tc; i++)
4171                 enabled_tc |= BIT(i);
4172
4173         return enabled_tc;
4174 }
4175
4176 /**
4177  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4178  * @pf: PF being queried
4179  *
4180  * Return number of traffic classes enabled for the given PF
4181  **/
4182 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4183 {
4184         struct i40e_hw *hw = &pf->hw;
4185         u8 i, enabled_tc;
4186         u8 num_tc = 0;
4187         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4188
4189         /* If DCB is not enabled then always in single TC */
4190         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4191                 return 1;
4192
4193         /* SFP mode will be enabled for all TCs on port */
4194         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4195                 return i40e_dcb_get_num_tc(dcbcfg);
4196
4197         /* MFP mode return count of enabled TCs for this PF */
4198         if (pf->hw.func_caps.iscsi)
4199                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4200         else
4201                 return 1; /* Only TC0 */
4202
4203         /* At least have TC0 */
4204         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4205         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4206                 if (enabled_tc & BIT_ULL(i))
4207                         num_tc++;
4208         }
4209         return num_tc;
4210 }
4211
4212 /**
4213  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4214  * @pf: PF being queried
4215  *
4216  * Return a bitmap for first enabled traffic class for this PF.
4217  **/
4218 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4219 {
4220         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4221         u8 i = 0;
4222
4223         if (!enabled_tc)
4224                 return 0x1; /* TC0 */
4225
4226         /* Find the first enabled TC */
4227         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4228                 if (enabled_tc & BIT_ULL(i))
4229                         break;
4230         }
4231
4232         return BIT(i);
4233 }
4234
4235 /**
4236  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4237  * @pf: PF being queried
4238  *
4239  * Return a bitmap for enabled traffic classes for this PF.
4240  **/
4241 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4242 {
4243         /* If DCB is not enabled for this PF then just return default TC */
4244         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4245                 return i40e_pf_get_default_tc(pf);
4246
4247         /* SFP mode we want PF to be enabled for all TCs */
4248         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4249                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4250
4251         /* MFP enabled and iSCSI PF type */
4252         if (pf->hw.func_caps.iscsi)
4253                 return i40e_get_iscsi_tc_map(pf);
4254         else
4255                 return i40e_pf_get_default_tc(pf);
4256 }
4257
4258 /**
4259  * i40e_vsi_get_bw_info - Query VSI BW Information
4260  * @vsi: the VSI being queried
4261  *
4262  * Returns 0 on success, negative value on failure
4263  **/
4264 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4265 {
4266         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4267         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4268         struct i40e_pf *pf = vsi->back;
4269         struct i40e_hw *hw = &pf->hw;
4270         i40e_status ret;
4271         u32 tc_bw_max;
4272         int i;
4273
4274         /* Get the VSI level BW configuration */
4275         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4276         if (ret) {
4277                 dev_info(&pf->pdev->dev,
4278                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4279                          i40e_stat_str(&pf->hw, ret),
4280                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4281                 return -EINVAL;
4282         }
4283
4284         /* Get the VSI level BW configuration per TC */
4285         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4286                                                NULL);
4287         if (ret) {
4288                 dev_info(&pf->pdev->dev,
4289                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4290                          i40e_stat_str(&pf->hw, ret),
4291                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4292                 return -EINVAL;
4293         }
4294
4295         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4296                 dev_info(&pf->pdev->dev,
4297                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4298                          bw_config.tc_valid_bits,
4299                          bw_ets_config.tc_valid_bits);
4300                 /* Still continuing */
4301         }
4302
4303         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4304         vsi->bw_max_quanta = bw_config.max_bw;
4305         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4306                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4307         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4308                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4309                 vsi->bw_ets_limit_credits[i] =
4310                                         le16_to_cpu(bw_ets_config.credits[i]);
4311                 /* 3 bits out of 4 for each TC */
4312                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4313         }
4314
4315         return 0;
4316 }
4317
4318 /**
4319  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4320  * @vsi: the VSI being configured
4321  * @enabled_tc: TC bitmap
4322  * @bw_credits: BW shared credits per TC
4323  *
4324  * Returns 0 on success, negative value on failure
4325  **/
4326 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4327                                        u8 *bw_share)
4328 {
4329         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4330         i40e_status ret;
4331         int i;
4332
4333         bw_data.tc_valid_bits = enabled_tc;
4334         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4335                 bw_data.tc_bw_credits[i] = bw_share[i];
4336
4337         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4338                                        NULL);
4339         if (ret) {
4340                 dev_info(&vsi->back->pdev->dev,
4341                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4342                          vsi->back->hw.aq.asq_last_status);
4343                 return -EINVAL;
4344         }
4345
4346         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4347                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4348
4349         return 0;
4350 }
4351
4352 /**
4353  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4354  * @vsi: the VSI being configured
4355  * @enabled_tc: TC map to be enabled
4356  *
4357  **/
4358 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4359 {
4360         struct net_device *netdev = vsi->netdev;
4361         struct i40e_pf *pf = vsi->back;
4362         struct i40e_hw *hw = &pf->hw;
4363         u8 netdev_tc = 0;
4364         int i;
4365         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4366
4367         if (!netdev)
4368                 return;
4369
4370         if (!enabled_tc) {
4371                 netdev_reset_tc(netdev);
4372                 return;
4373         }
4374
4375         /* Set up actual enabled TCs on the VSI */
4376         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4377                 return;
4378
4379         /* set per TC queues for the VSI */
4380         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4381                 /* Only set TC queues for enabled tcs
4382                  *
4383                  * e.g. For a VSI that has TC0 and TC3 enabled the
4384                  * enabled_tc bitmap would be 0x00001001; the driver
4385                  * will set the numtc for netdev as 2 that will be
4386                  * referenced by the netdev layer as TC 0 and 1.
4387                  */
4388                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4389                         netdev_set_tc_queue(netdev,
4390                                         vsi->tc_config.tc_info[i].netdev_tc,
4391                                         vsi->tc_config.tc_info[i].qcount,
4392                                         vsi->tc_config.tc_info[i].qoffset);
4393         }
4394
4395         /* Assign UP2TC map for the VSI */
4396         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4397                 /* Get the actual TC# for the UP */
4398                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4399                 /* Get the mapped netdev TC# for the UP */
4400                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4401                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4402         }
4403 }
4404
4405 /**
4406  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4407  * @vsi: the VSI being configured
4408  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4409  **/
4410 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4411                                       struct i40e_vsi_context *ctxt)
4412 {
4413         /* copy just the sections touched not the entire info
4414          * since not all sections are valid as returned by
4415          * update vsi params
4416          */
4417         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4418         memcpy(&vsi->info.queue_mapping,
4419                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4420         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4421                sizeof(vsi->info.tc_mapping));
4422 }
4423
4424 /**
4425  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4426  * @vsi: VSI to be configured
4427  * @enabled_tc: TC bitmap
4428  *
4429  * This configures a particular VSI for TCs that are mapped to the
4430  * given TC bitmap. It uses default bandwidth share for TCs across
4431  * VSIs to configure TC for a particular VSI.
4432  *
4433  * NOTE:
4434  * It is expected that the VSI queues have been quisced before calling
4435  * this function.
4436  **/
4437 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4438 {
4439         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4440         struct i40e_vsi_context ctxt;
4441         int ret = 0;
4442         int i;
4443
4444         /* Check if enabled_tc is same as existing or new TCs */
4445         if (vsi->tc_config.enabled_tc == enabled_tc)
4446                 return ret;
4447
4448         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4449         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4450                 if (enabled_tc & BIT_ULL(i))
4451                         bw_share[i] = 1;
4452         }
4453
4454         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4455         if (ret) {
4456                 dev_info(&vsi->back->pdev->dev,
4457                          "Failed configuring TC map %d for VSI %d\n",
4458                          enabled_tc, vsi->seid);
4459                 goto out;
4460         }
4461
4462         /* Update Queue Pairs Mapping for currently enabled UPs */
4463         ctxt.seid = vsi->seid;
4464         ctxt.pf_num = vsi->back->hw.pf_id;
4465         ctxt.vf_num = 0;
4466         ctxt.uplink_seid = vsi->uplink_seid;
4467         ctxt.info = vsi->info;
4468         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4469
4470         /* Update the VSI after updating the VSI queue-mapping information */
4471         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4472         if (ret) {
4473                 dev_info(&vsi->back->pdev->dev,
4474                          "Update vsi tc config failed, err %s aq_err %s\n",
4475                          i40e_stat_str(&vsi->back->hw, ret),
4476                          i40e_aq_str(&vsi->back->hw,
4477                                      vsi->back->hw.aq.asq_last_status));
4478                 goto out;
4479         }
4480         /* update the local VSI info with updated queue map */
4481         i40e_vsi_update_queue_map(vsi, &ctxt);
4482         vsi->info.valid_sections = 0;
4483
4484         /* Update current VSI BW information */
4485         ret = i40e_vsi_get_bw_info(vsi);
4486         if (ret) {
4487                 dev_info(&vsi->back->pdev->dev,
4488                          "Failed updating vsi bw info, err %s aq_err %s\n",
4489                          i40e_stat_str(&vsi->back->hw, ret),
4490                          i40e_aq_str(&vsi->back->hw,
4491                                      vsi->back->hw.aq.asq_last_status));
4492                 goto out;
4493         }
4494
4495         /* Update the netdev TC setup */
4496         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4497 out:
4498         return ret;
4499 }
4500
4501 /**
4502  * i40e_veb_config_tc - Configure TCs for given VEB
4503  * @veb: given VEB
4504  * @enabled_tc: TC bitmap
4505  *
4506  * Configures given TC bitmap for VEB (switching) element
4507  **/
4508 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4509 {
4510         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4511         struct i40e_pf *pf = veb->pf;
4512         int ret = 0;
4513         int i;
4514
4515         /* No TCs or already enabled TCs just return */
4516         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4517                 return ret;
4518
4519         bw_data.tc_valid_bits = enabled_tc;
4520         /* bw_data.absolute_credits is not set (relative) */
4521
4522         /* Enable ETS TCs with equal BW Share for now */
4523         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4524                 if (enabled_tc & BIT_ULL(i))
4525                         bw_data.tc_bw_share_credits[i] = 1;
4526         }
4527
4528         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4529                                                    &bw_data, NULL);
4530         if (ret) {
4531                 dev_info(&pf->pdev->dev,
4532                          "VEB bw config failed, err %s aq_err %s\n",
4533                          i40e_stat_str(&pf->hw, ret),
4534                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4535                 goto out;
4536         }
4537
4538         /* Update the BW information */
4539         ret = i40e_veb_get_bw_info(veb);
4540         if (ret) {
4541                 dev_info(&pf->pdev->dev,
4542                          "Failed getting veb bw config, err %s aq_err %s\n",
4543                          i40e_stat_str(&pf->hw, ret),
4544                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4545         }
4546
4547 out:
4548         return ret;
4549 }
4550
4551 #ifdef CONFIG_I40E_DCB
4552 /**
4553  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4554  * @pf: PF struct
4555  *
4556  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4557  * the caller would've quiesce all the VSIs before calling
4558  * this function
4559  **/
4560 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4561 {
4562         u8 tc_map = 0;
4563         int ret;
4564         u8 v;
4565
4566         /* Enable the TCs available on PF to all VEBs */
4567         tc_map = i40e_pf_get_tc_map(pf);
4568         for (v = 0; v < I40E_MAX_VEB; v++) {
4569                 if (!pf->veb[v])
4570                         continue;
4571                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4572                 if (ret) {
4573                         dev_info(&pf->pdev->dev,
4574                                  "Failed configuring TC for VEB seid=%d\n",
4575                                  pf->veb[v]->seid);
4576                         /* Will try to configure as many components */
4577                 }
4578         }
4579
4580         /* Update each VSI */
4581         for (v = 0; v < pf->num_alloc_vsi; v++) {
4582                 if (!pf->vsi[v])
4583                         continue;
4584
4585                 /* - Enable all TCs for the LAN VSI
4586 #ifdef I40E_FCOE
4587                  * - For FCoE VSI only enable the TC configured
4588                  *   as per the APP TLV
4589 #endif
4590                  * - For all others keep them at TC0 for now
4591                  */
4592                 if (v == pf->lan_vsi)
4593                         tc_map = i40e_pf_get_tc_map(pf);
4594                 else
4595                         tc_map = i40e_pf_get_default_tc(pf);
4596 #ifdef I40E_FCOE
4597                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4598                         tc_map = i40e_get_fcoe_tc_map(pf);
4599 #endif /* #ifdef I40E_FCOE */
4600
4601                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4602                 if (ret) {
4603                         dev_info(&pf->pdev->dev,
4604                                  "Failed configuring TC for VSI seid=%d\n",
4605                                  pf->vsi[v]->seid);
4606                         /* Will try to configure as many components */
4607                 } else {
4608                         /* Re-configure VSI vectors based on updated TC map */
4609                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4610                         if (pf->vsi[v]->netdev)
4611                                 i40e_dcbnl_set_all(pf->vsi[v]);
4612                 }
4613         }
4614 }
4615
4616 /**
4617  * i40e_resume_port_tx - Resume port Tx
4618  * @pf: PF struct
4619  *
4620  * Resume a port's Tx and issue a PF reset in case of failure to
4621  * resume.
4622  **/
4623 static int i40e_resume_port_tx(struct i40e_pf *pf)
4624 {
4625         struct i40e_hw *hw = &pf->hw;
4626         int ret;
4627
4628         ret = i40e_aq_resume_port_tx(hw, NULL);
4629         if (ret) {
4630                 dev_info(&pf->pdev->dev,
4631                          "Resume Port Tx failed, err %s aq_err %s\n",
4632                           i40e_stat_str(&pf->hw, ret),
4633                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4634                 /* Schedule PF reset to recover */
4635                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4636                 i40e_service_event_schedule(pf);
4637         }
4638
4639         return ret;
4640 }
4641
4642 /**
4643  * i40e_init_pf_dcb - Initialize DCB configuration
4644  * @pf: PF being configured
4645  *
4646  * Query the current DCB configuration and cache it
4647  * in the hardware structure
4648  **/
4649 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4650 {
4651         struct i40e_hw *hw = &pf->hw;
4652         int err = 0;
4653
4654         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4655         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4656             (pf->hw.aq.fw_maj_ver < 4))
4657                 goto out;
4658
4659         /* Get the initial DCB configuration */
4660         err = i40e_init_dcb(hw);
4661         if (!err) {
4662                 /* Device/Function is not DCBX capable */
4663                 if ((!hw->func_caps.dcb) ||
4664                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4665                         dev_info(&pf->pdev->dev,
4666                                  "DCBX offload is not supported or is disabled for this PF.\n");
4667
4668                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4669                                 goto out;
4670
4671                 } else {
4672                         /* When status is not DISABLED then DCBX in FW */
4673                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4674                                        DCB_CAP_DCBX_VER_IEEE;
4675
4676                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4677                         /* Enable DCB tagging only when more than one TC */
4678                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4679                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4680                         dev_dbg(&pf->pdev->dev,
4681                                 "DCBX offload is supported for this PF.\n");
4682                 }
4683         } else {
4684                 dev_info(&pf->pdev->dev,
4685                          "Query for DCB configuration failed, err %s aq_err %s\n",
4686                          i40e_stat_str(&pf->hw, err),
4687                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4688         }
4689
4690 out:
4691         return err;
4692 }
4693 #endif /* CONFIG_I40E_DCB */
4694 #define SPEED_SIZE 14
4695 #define FC_SIZE 8
4696 /**
4697  * i40e_print_link_message - print link up or down
4698  * @vsi: the VSI for which link needs a message
4699  */
4700 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4701 {
4702         char speed[SPEED_SIZE] = "Unknown";
4703         char fc[FC_SIZE] = "RX/TX";
4704
4705         if (!isup) {
4706                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4707                 return;
4708         }
4709
4710         /* Warn user if link speed on NPAR enabled partition is not at
4711          * least 10GB
4712          */
4713         if (vsi->back->hw.func_caps.npar_enable &&
4714             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4715              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4716                 netdev_warn(vsi->netdev,
4717                             "The partition detected link speed that is less than 10Gbps\n");
4718
4719         switch (vsi->back->hw.phy.link_info.link_speed) {
4720         case I40E_LINK_SPEED_40GB:
4721                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4722                 break;
4723         case I40E_LINK_SPEED_20GB:
4724                 strncpy(speed, "20 Gbps", SPEED_SIZE);
4725                 break;
4726         case I40E_LINK_SPEED_10GB:
4727                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4728                 break;
4729         case I40E_LINK_SPEED_1GB:
4730                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4731                 break;
4732         case I40E_LINK_SPEED_100MB:
4733                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4734                 break;
4735         default:
4736                 break;
4737         }
4738
4739         switch (vsi->back->hw.fc.current_mode) {
4740         case I40E_FC_FULL:
4741                 strlcpy(fc, "RX/TX", FC_SIZE);
4742                 break;
4743         case I40E_FC_TX_PAUSE:
4744                 strlcpy(fc, "TX", FC_SIZE);
4745                 break;
4746         case I40E_FC_RX_PAUSE:
4747                 strlcpy(fc, "RX", FC_SIZE);
4748                 break;
4749         default:
4750                 strlcpy(fc, "None", FC_SIZE);
4751                 break;
4752         }
4753
4754         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4755                     speed, fc);
4756 }
4757
4758 /**
4759  * i40e_up_complete - Finish the last steps of bringing up a connection
4760  * @vsi: the VSI being configured
4761  **/
4762 static int i40e_up_complete(struct i40e_vsi *vsi)
4763 {
4764         struct i40e_pf *pf = vsi->back;
4765         int err;
4766
4767         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4768                 i40e_vsi_configure_msix(vsi);
4769         else
4770                 i40e_configure_msi_and_legacy(vsi);
4771
4772         /* start rings */
4773         err = i40e_vsi_control_rings(vsi, true);
4774         if (err)
4775                 return err;
4776
4777         clear_bit(__I40E_DOWN, &vsi->state);
4778         i40e_napi_enable_all(vsi);
4779         i40e_vsi_enable_irq(vsi);
4780
4781         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4782             (vsi->netdev)) {
4783                 i40e_print_link_message(vsi, true);
4784                 netif_tx_start_all_queues(vsi->netdev);
4785                 netif_carrier_on(vsi->netdev);
4786         } else if (vsi->netdev) {
4787                 i40e_print_link_message(vsi, false);
4788                 /* need to check for qualified module here*/
4789                 if ((pf->hw.phy.link_info.link_info &
4790                         I40E_AQ_MEDIA_AVAILABLE) &&
4791                     (!(pf->hw.phy.link_info.an_info &
4792                         I40E_AQ_QUALIFIED_MODULE)))
4793                         netdev_err(vsi->netdev,
4794                                    "the driver failed to link because an unqualified module was detected.");
4795         }
4796
4797         /* replay FDIR SB filters */
4798         if (vsi->type == I40E_VSI_FDIR) {
4799                 /* reset fd counters */
4800                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4801                 if (pf->fd_tcp_rule > 0) {
4802                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4803                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
4804                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4805                         pf->fd_tcp_rule = 0;
4806                 }
4807                 i40e_fdir_filter_restore(vsi);
4808         }
4809         i40e_service_event_schedule(pf);
4810
4811         return 0;
4812 }
4813
4814 /**
4815  * i40e_vsi_reinit_locked - Reset the VSI
4816  * @vsi: the VSI being configured
4817  *
4818  * Rebuild the ring structs after some configuration
4819  * has changed, e.g. MTU size.
4820  **/
4821 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4822 {
4823         struct i40e_pf *pf = vsi->back;
4824
4825         WARN_ON(in_interrupt());
4826         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4827                 usleep_range(1000, 2000);
4828         i40e_down(vsi);
4829
4830         /* Give a VF some time to respond to the reset.  The
4831          * two second wait is based upon the watchdog cycle in
4832          * the VF driver.
4833          */
4834         if (vsi->type == I40E_VSI_SRIOV)
4835                 msleep(2000);
4836         i40e_up(vsi);
4837         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4838 }
4839
4840 /**
4841  * i40e_up - Bring the connection back up after being down
4842  * @vsi: the VSI being configured
4843  **/
4844 int i40e_up(struct i40e_vsi *vsi)
4845 {
4846         int err;
4847
4848         err = i40e_vsi_configure(vsi);
4849         if (!err)
4850                 err = i40e_up_complete(vsi);
4851
4852         return err;
4853 }
4854
4855 /**
4856  * i40e_down - Shutdown the connection processing
4857  * @vsi: the VSI being stopped
4858  **/
4859 void i40e_down(struct i40e_vsi *vsi)
4860 {
4861         int i;
4862
4863         /* It is assumed that the caller of this function
4864          * sets the vsi->state __I40E_DOWN bit.
4865          */
4866         if (vsi->netdev) {
4867                 netif_carrier_off(vsi->netdev);
4868                 netif_tx_disable(vsi->netdev);
4869         }
4870         i40e_vsi_disable_irq(vsi);
4871         i40e_vsi_control_rings(vsi, false);
4872         i40e_napi_disable_all(vsi);
4873
4874         for (i = 0; i < vsi->num_queue_pairs; i++) {
4875                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4876                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4877         }
4878 }
4879
4880 /**
4881  * i40e_setup_tc - configure multiple traffic classes
4882  * @netdev: net device to configure
4883  * @tc: number of traffic classes to enable
4884  **/
4885 #ifdef I40E_FCOE
4886 int i40e_setup_tc(struct net_device *netdev, u8 tc)
4887 #else
4888 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4889 #endif
4890 {
4891         struct i40e_netdev_priv *np = netdev_priv(netdev);
4892         struct i40e_vsi *vsi = np->vsi;
4893         struct i40e_pf *pf = vsi->back;
4894         u8 enabled_tc = 0;
4895         int ret = -EINVAL;
4896         int i;
4897
4898         /* Check if DCB enabled to continue */
4899         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4900                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4901                 goto exit;
4902         }
4903
4904         /* Check if MFP enabled */
4905         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4906                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4907                 goto exit;
4908         }
4909
4910         /* Check whether tc count is within enabled limit */
4911         if (tc > i40e_pf_get_num_tc(pf)) {
4912                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4913                 goto exit;
4914         }
4915
4916         /* Generate TC map for number of tc requested */
4917         for (i = 0; i < tc; i++)
4918                 enabled_tc |= BIT_ULL(i);
4919
4920         /* Requesting same TC configuration as already enabled */
4921         if (enabled_tc == vsi->tc_config.enabled_tc)
4922                 return 0;
4923
4924         /* Quiesce VSI queues */
4925         i40e_quiesce_vsi(vsi);
4926
4927         /* Configure VSI for enabled TCs */
4928         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4929         if (ret) {
4930                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4931                             vsi->seid);
4932                 goto exit;
4933         }
4934
4935         /* Unquiesce VSI */
4936         i40e_unquiesce_vsi(vsi);
4937
4938 exit:
4939         return ret;
4940 }
4941
4942 /**
4943  * i40e_open - Called when a network interface is made active
4944  * @netdev: network interface device structure
4945  *
4946  * The open entry point is called when a network interface is made
4947  * active by the system (IFF_UP).  At this point all resources needed
4948  * for transmit and receive operations are allocated, the interrupt
4949  * handler is registered with the OS, the netdev watchdog subtask is
4950  * enabled, and the stack is notified that the interface is ready.
4951  *
4952  * Returns 0 on success, negative value on failure
4953  **/
4954 int i40e_open(struct net_device *netdev)
4955 {
4956         struct i40e_netdev_priv *np = netdev_priv(netdev);
4957         struct i40e_vsi *vsi = np->vsi;
4958         struct i40e_pf *pf = vsi->back;
4959         int err;
4960
4961         /* disallow open during test or if eeprom is broken */
4962         if (test_bit(__I40E_TESTING, &pf->state) ||
4963             test_bit(__I40E_BAD_EEPROM, &pf->state))
4964                 return -EBUSY;
4965
4966         netif_carrier_off(netdev);
4967
4968         err = i40e_vsi_open(vsi);
4969         if (err)
4970                 return err;
4971
4972         /* configure global TSO hardware offload settings */
4973         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4974                                                        TCP_FLAG_FIN) >> 16);
4975         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4976                                                        TCP_FLAG_FIN |
4977                                                        TCP_FLAG_CWR) >> 16);
4978         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4979
4980 #ifdef CONFIG_I40E_VXLAN
4981         vxlan_get_rx_port(netdev);
4982 #endif
4983
4984         return 0;
4985 }
4986
4987 /**
4988  * i40e_vsi_open -
4989  * @vsi: the VSI to open
4990  *
4991  * Finish initialization of the VSI.
4992  *
4993  * Returns 0 on success, negative value on failure
4994  **/
4995 int i40e_vsi_open(struct i40e_vsi *vsi)
4996 {
4997         struct i40e_pf *pf = vsi->back;
4998         char int_name[I40E_INT_NAME_STR_LEN];
4999         int err;
5000
5001         /* allocate descriptors */
5002         err = i40e_vsi_setup_tx_resources(vsi);
5003         if (err)
5004                 goto err_setup_tx;
5005         err = i40e_vsi_setup_rx_resources(vsi);
5006         if (err)
5007                 goto err_setup_rx;
5008
5009         err = i40e_vsi_configure(vsi);
5010         if (err)
5011                 goto err_setup_rx;
5012
5013         if (vsi->netdev) {
5014                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5015                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5016                 err = i40e_vsi_request_irq(vsi, int_name);
5017                 if (err)
5018                         goto err_setup_rx;
5019
5020                 /* Notify the stack of the actual queue counts. */
5021                 err = netif_set_real_num_tx_queues(vsi->netdev,
5022                                                    vsi->num_queue_pairs);
5023                 if (err)
5024                         goto err_set_queues;
5025
5026                 err = netif_set_real_num_rx_queues(vsi->netdev,
5027                                                    vsi->num_queue_pairs);
5028                 if (err)
5029                         goto err_set_queues;
5030
5031         } else if (vsi->type == I40E_VSI_FDIR) {
5032                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5033                          dev_driver_string(&pf->pdev->dev),
5034                          dev_name(&pf->pdev->dev));
5035                 err = i40e_vsi_request_irq(vsi, int_name);
5036
5037         } else {
5038                 err = -EINVAL;
5039                 goto err_setup_rx;
5040         }
5041
5042         err = i40e_up_complete(vsi);
5043         if (err)
5044                 goto err_up_complete;
5045
5046         return 0;
5047
5048 err_up_complete:
5049         i40e_down(vsi);
5050 err_set_queues:
5051         i40e_vsi_free_irq(vsi);
5052 err_setup_rx:
5053         i40e_vsi_free_rx_resources(vsi);
5054 err_setup_tx:
5055         i40e_vsi_free_tx_resources(vsi);
5056         if (vsi == pf->vsi[pf->lan_vsi])
5057                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5058
5059         return err;
5060 }
5061
5062 /**
5063  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5064  * @pf: Pointer to PF
5065  *
5066  * This function destroys the hlist where all the Flow Director
5067  * filters were saved.
5068  **/
5069 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5070 {
5071         struct i40e_fdir_filter *filter;
5072         struct hlist_node *node2;
5073
5074         hlist_for_each_entry_safe(filter, node2,
5075                                   &pf->fdir_filter_list, fdir_node) {
5076                 hlist_del(&filter->fdir_node);
5077                 kfree(filter);
5078         }
5079         pf->fdir_pf_active_filters = 0;
5080 }
5081
5082 /**
5083  * i40e_close - Disables a network interface
5084  * @netdev: network interface device structure
5085  *
5086  * The close entry point is called when an interface is de-activated
5087  * by the OS.  The hardware is still under the driver's control, but
5088  * this netdev interface is disabled.
5089  *
5090  * Returns 0, this is not allowed to fail
5091  **/
5092 #ifdef I40E_FCOE
5093 int i40e_close(struct net_device *netdev)
5094 #else
5095 static int i40e_close(struct net_device *netdev)
5096 #endif
5097 {
5098         struct i40e_netdev_priv *np = netdev_priv(netdev);
5099         struct i40e_vsi *vsi = np->vsi;
5100
5101         i40e_vsi_close(vsi);
5102
5103         return 0;
5104 }
5105
5106 /**
5107  * i40e_do_reset - Start a PF or Core Reset sequence
5108  * @pf: board private structure
5109  * @reset_flags: which reset is requested
5110  *
5111  * The essential difference in resets is that the PF Reset
5112  * doesn't clear the packet buffers, doesn't reset the PE
5113  * firmware, and doesn't bother the other PFs on the chip.
5114  **/
5115 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5116 {
5117         u32 val;
5118
5119         WARN_ON(in_interrupt());
5120
5121         if (i40e_check_asq_alive(&pf->hw))
5122                 i40e_vc_notify_reset(pf);
5123
5124         /* do the biggest reset indicated */
5125         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5126
5127                 /* Request a Global Reset
5128                  *
5129                  * This will start the chip's countdown to the actual full
5130                  * chip reset event, and a warning interrupt to be sent
5131                  * to all PFs, including the requestor.  Our handler
5132                  * for the warning interrupt will deal with the shutdown
5133                  * and recovery of the switch setup.
5134                  */
5135                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5136                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5137                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5138                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5139
5140         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5141
5142                 /* Request a Core Reset
5143                  *
5144                  * Same as Global Reset, except does *not* include the MAC/PHY
5145                  */
5146                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5147                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5148                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5149                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5150                 i40e_flush(&pf->hw);
5151
5152         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5153
5154                 /* Request a PF Reset
5155                  *
5156                  * Resets only the PF-specific registers
5157                  *
5158                  * This goes directly to the tear-down and rebuild of
5159                  * the switch, since we need to do all the recovery as
5160                  * for the Core Reset.
5161                  */
5162                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5163                 i40e_handle_reset_warning(pf);
5164
5165         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5166                 int v;
5167
5168                 /* Find the VSI(s) that requested a re-init */
5169                 dev_info(&pf->pdev->dev,
5170                          "VSI reinit requested\n");
5171                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5172                         struct i40e_vsi *vsi = pf->vsi[v];
5173                         if (vsi != NULL &&
5174                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5175                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5176                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5177                         }
5178                 }
5179
5180                 /* no further action needed, so return now */
5181                 return;
5182         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5183                 int v;
5184
5185                 /* Find the VSI(s) that needs to be brought down */
5186                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5187                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5188                         struct i40e_vsi *vsi = pf->vsi[v];
5189                         if (vsi != NULL &&
5190                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5191                                 set_bit(__I40E_DOWN, &vsi->state);
5192                                 i40e_down(vsi);
5193                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5194                         }
5195                 }
5196
5197                 /* no further action needed, so return now */
5198                 return;
5199         } else {
5200                 dev_info(&pf->pdev->dev,
5201                          "bad reset request 0x%08x\n", reset_flags);
5202                 return;
5203         }
5204 }
5205
5206 #ifdef CONFIG_I40E_DCB
5207 /**
5208  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5209  * @pf: board private structure
5210  * @old_cfg: current DCB config
5211  * @new_cfg: new DCB config
5212  **/
5213 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5214                             struct i40e_dcbx_config *old_cfg,
5215                             struct i40e_dcbx_config *new_cfg)
5216 {
5217         bool need_reconfig = false;
5218
5219         /* Check if ETS configuration has changed */
5220         if (memcmp(&new_cfg->etscfg,
5221                    &old_cfg->etscfg,
5222                    sizeof(new_cfg->etscfg))) {
5223                 /* If Priority Table has changed reconfig is needed */
5224                 if (memcmp(&new_cfg->etscfg.prioritytable,
5225                            &old_cfg->etscfg.prioritytable,
5226                            sizeof(new_cfg->etscfg.prioritytable))) {
5227                         need_reconfig = true;
5228                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5229                 }
5230
5231                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5232                            &old_cfg->etscfg.tcbwtable,
5233                            sizeof(new_cfg->etscfg.tcbwtable)))
5234                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5235
5236                 if (memcmp(&new_cfg->etscfg.tsatable,
5237                            &old_cfg->etscfg.tsatable,
5238                            sizeof(new_cfg->etscfg.tsatable)))
5239                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5240         }
5241
5242         /* Check if PFC configuration has changed */
5243         if (memcmp(&new_cfg->pfc,
5244                    &old_cfg->pfc,
5245                    sizeof(new_cfg->pfc))) {
5246                 need_reconfig = true;
5247                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5248         }
5249
5250         /* Check if APP Table has changed */
5251         if (memcmp(&new_cfg->app,
5252                    &old_cfg->app,
5253                    sizeof(new_cfg->app))) {
5254                 need_reconfig = true;
5255                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5256         }
5257
5258         dev_dbg(&pf->pdev->dev, "%s: need_reconfig=%d\n", __func__,
5259                 need_reconfig);
5260         return need_reconfig;
5261 }
5262
5263 /**
5264  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5265  * @pf: board private structure
5266  * @e: event info posted on ARQ
5267  **/
5268 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5269                                   struct i40e_arq_event_info *e)
5270 {
5271         struct i40e_aqc_lldp_get_mib *mib =
5272                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5273         struct i40e_hw *hw = &pf->hw;
5274         struct i40e_dcbx_config tmp_dcbx_cfg;
5275         bool need_reconfig = false;
5276         int ret = 0;
5277         u8 type;
5278
5279         /* Not DCB capable or capability disabled */
5280         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5281                 return ret;
5282
5283         /* Ignore if event is not for Nearest Bridge */
5284         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5285                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5286         dev_dbg(&pf->pdev->dev,
5287                 "%s: LLDP event mib bridge type 0x%x\n", __func__, type);
5288         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5289                 return ret;
5290
5291         /* Check MIB Type and return if event for Remote MIB update */
5292         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5293         dev_dbg(&pf->pdev->dev,
5294                 "%s: LLDP event mib type %s\n", __func__,
5295                 type ? "remote" : "local");
5296         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5297                 /* Update the remote cached instance and return */
5298                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5299                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5300                                 &hw->remote_dcbx_config);
5301                 goto exit;
5302         }
5303
5304         /* Store the old configuration */
5305         tmp_dcbx_cfg = hw->local_dcbx_config;
5306
5307         /* Reset the old DCBx configuration data */
5308         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5309         /* Get updated DCBX data from firmware */
5310         ret = i40e_get_dcb_config(&pf->hw);
5311         if (ret) {
5312                 dev_info(&pf->pdev->dev,
5313                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5314                          i40e_stat_str(&pf->hw, ret),
5315                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5316                 goto exit;
5317         }
5318
5319         /* No change detected in DCBX configs */
5320         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5321                     sizeof(tmp_dcbx_cfg))) {
5322                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5323                 goto exit;
5324         }
5325
5326         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5327                                                &hw->local_dcbx_config);
5328
5329         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5330
5331         if (!need_reconfig)
5332                 goto exit;
5333
5334         /* Enable DCB tagging only when more than one TC */
5335         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5336                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5337         else
5338                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5339
5340         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5341         /* Reconfiguration needed quiesce all VSIs */
5342         i40e_pf_quiesce_all_vsi(pf);
5343
5344         /* Changes in configuration update VEB/VSI */
5345         i40e_dcb_reconfigure(pf);
5346
5347         ret = i40e_resume_port_tx(pf);
5348
5349         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5350         /* In case of error no point in resuming VSIs */
5351         if (ret)
5352                 goto exit;
5353
5354         /* Wait for the PF's Tx queues to be disabled */
5355         ret = i40e_pf_wait_txq_disabled(pf);
5356         if (ret) {
5357                 /* Schedule PF reset to recover */
5358                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5359                 i40e_service_event_schedule(pf);
5360         } else {
5361                 i40e_pf_unquiesce_all_vsi(pf);
5362         }
5363
5364 exit:
5365         return ret;
5366 }
5367 #endif /* CONFIG_I40E_DCB */
5368
5369 /**
5370  * i40e_do_reset_safe - Protected reset path for userland calls.
5371  * @pf: board private structure
5372  * @reset_flags: which reset is requested
5373  *
5374  **/
5375 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5376 {
5377         rtnl_lock();
5378         i40e_do_reset(pf, reset_flags);
5379         rtnl_unlock();
5380 }
5381
5382 /**
5383  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5384  * @pf: board private structure
5385  * @e: event info posted on ARQ
5386  *
5387  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5388  * and VF queues
5389  **/
5390 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5391                                            struct i40e_arq_event_info *e)
5392 {
5393         struct i40e_aqc_lan_overflow *data =
5394                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5395         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5396         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5397         struct i40e_hw *hw = &pf->hw;
5398         struct i40e_vf *vf;
5399         u16 vf_id;
5400
5401         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5402                 queue, qtx_ctl);
5403
5404         /* Queue belongs to VF, find the VF and issue VF reset */
5405         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5406             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5407                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5408                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5409                 vf_id -= hw->func_caps.vf_base_id;
5410                 vf = &pf->vf[vf_id];
5411                 i40e_vc_notify_vf_reset(vf);
5412                 /* Allow VF to process pending reset notification */
5413                 msleep(20);
5414                 i40e_reset_vf(vf, false);
5415         }
5416 }
5417
5418 /**
5419  * i40e_service_event_complete - Finish up the service event
5420  * @pf: board private structure
5421  **/
5422 static void i40e_service_event_complete(struct i40e_pf *pf)
5423 {
5424         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5425
5426         /* flush memory to make sure state is correct before next watchog */
5427         smp_mb__before_atomic();
5428         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5429 }
5430
5431 /**
5432  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5433  * @pf: board private structure
5434  **/
5435 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5436 {
5437         u32 val, fcnt_prog;
5438
5439         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5440         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5441         return fcnt_prog;
5442 }
5443
5444 /**
5445  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5446  * @pf: board private structure
5447  **/
5448 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5449 {
5450         u32 val, fcnt_prog;
5451
5452         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5453         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5454                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5455                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5456         return fcnt_prog;
5457 }
5458
5459 /**
5460  * i40e_get_global_fd_count - Get total FD filters programmed on device
5461  * @pf: board private structure
5462  **/
5463 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5464 {
5465         u32 val, fcnt_prog;
5466
5467         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5468         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5469                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5470                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5471         return fcnt_prog;
5472 }
5473
5474 /**
5475  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5476  * @pf: board private structure
5477  **/
5478 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5479 {
5480         u32 fcnt_prog, fcnt_avail;
5481
5482         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5483                 return;
5484
5485         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5486          * to re-enable
5487          */
5488         fcnt_prog = i40e_get_global_fd_count(pf);
5489         fcnt_avail = pf->fdir_pf_filter_count;
5490         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5491             (pf->fd_add_err == 0) ||
5492             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5493                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5494                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5495                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5496                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5497                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5498                 }
5499         }
5500         /* Wait for some more space to be available to turn on ATR */
5501         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5502                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5503                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5504                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5505                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5506                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5507                 }
5508         }
5509 }
5510
5511 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5512 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5513 /**
5514  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5515  * @pf: board private structure
5516  **/
5517 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5518 {
5519         unsigned long min_flush_time;
5520         int flush_wait_retry = 50;
5521         bool disable_atr = false;
5522         int fd_room;
5523         int reg;
5524
5525         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5526                 return;
5527
5528         if (time_after(jiffies, pf->fd_flush_timestamp +
5529                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5530                 /* If the flush is happening too quick and we have mostly
5531                  * SB rules we should not re-enable ATR for some time.
5532                  */
5533                 min_flush_time = pf->fd_flush_timestamp
5534                                 + (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5535                 fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5536
5537                 if (!(time_after(jiffies, min_flush_time)) &&
5538                     (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5539                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5540                                 dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5541                         disable_atr = true;
5542                 }
5543
5544                 pf->fd_flush_timestamp = jiffies;
5545                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5546                 /* flush all filters */
5547                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5548                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5549                 i40e_flush(&pf->hw);
5550                 pf->fd_flush_cnt++;
5551                 pf->fd_add_err = 0;
5552                 do {
5553                         /* Check FD flush status every 5-6msec */
5554                         usleep_range(5000, 6000);
5555                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5556                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5557                                 break;
5558                 } while (flush_wait_retry--);
5559                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5560                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5561                 } else {
5562                         /* replay sideband filters */
5563                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5564                         if (!disable_atr)
5565                                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5566                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5567                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5568                                 dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5569                 }
5570         }
5571 }
5572
5573 /**
5574  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5575  * @pf: board private structure
5576  **/
5577 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5578 {
5579         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5580 }
5581
5582 /* We can see up to 256 filter programming desc in transit if the filters are
5583  * being applied really fast; before we see the first
5584  * filter miss error on Rx queue 0. Accumulating enough error messages before
5585  * reacting will make sure we don't cause flush too often.
5586  */
5587 #define I40E_MAX_FD_PROGRAM_ERROR 256
5588
5589 /**
5590  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5591  * @pf: board private structure
5592  **/
5593 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5594 {
5595
5596         /* if interface is down do nothing */
5597         if (test_bit(__I40E_DOWN, &pf->state))
5598                 return;
5599
5600         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5601                 return;
5602
5603         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5604                 i40e_fdir_flush_and_replay(pf);
5605
5606         i40e_fdir_check_and_reenable(pf);
5607
5608 }
5609
5610 /**
5611  * i40e_vsi_link_event - notify VSI of a link event
5612  * @vsi: vsi to be notified
5613  * @link_up: link up or down
5614  **/
5615 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5616 {
5617         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5618                 return;
5619
5620         switch (vsi->type) {
5621         case I40E_VSI_MAIN:
5622 #ifdef I40E_FCOE
5623         case I40E_VSI_FCOE:
5624 #endif
5625                 if (!vsi->netdev || !vsi->netdev_registered)
5626                         break;
5627
5628                 if (link_up) {
5629                         netif_carrier_on(vsi->netdev);
5630                         netif_tx_wake_all_queues(vsi->netdev);
5631                 } else {
5632                         netif_carrier_off(vsi->netdev);
5633                         netif_tx_stop_all_queues(vsi->netdev);
5634                 }
5635                 break;
5636
5637         case I40E_VSI_SRIOV:
5638         case I40E_VSI_VMDQ2:
5639         case I40E_VSI_CTRL:
5640         case I40E_VSI_MIRROR:
5641         default:
5642                 /* there is no notification for other VSIs */
5643                 break;
5644         }
5645 }
5646
5647 /**
5648  * i40e_veb_link_event - notify elements on the veb of a link event
5649  * @veb: veb to be notified
5650  * @link_up: link up or down
5651  **/
5652 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5653 {
5654         struct i40e_pf *pf;
5655         int i;
5656
5657         if (!veb || !veb->pf)
5658                 return;
5659         pf = veb->pf;
5660
5661         /* depth first... */
5662         for (i = 0; i < I40E_MAX_VEB; i++)
5663                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5664                         i40e_veb_link_event(pf->veb[i], link_up);
5665
5666         /* ... now the local VSIs */
5667         for (i = 0; i < pf->num_alloc_vsi; i++)
5668                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5669                         i40e_vsi_link_event(pf->vsi[i], link_up);
5670 }
5671
5672 /**
5673  * i40e_link_event - Update netif_carrier status
5674  * @pf: board private structure
5675  **/
5676 static void i40e_link_event(struct i40e_pf *pf)
5677 {
5678         bool new_link, old_link;
5679         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5680         u8 new_link_speed, old_link_speed;
5681
5682         /* set this to force the get_link_status call to refresh state */
5683         pf->hw.phy.get_link_info = true;
5684
5685         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5686         new_link = i40e_get_link_status(&pf->hw);
5687         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5688         new_link_speed = pf->hw.phy.link_info.link_speed;
5689
5690         if (new_link == old_link &&
5691             new_link_speed == old_link_speed &&
5692             (test_bit(__I40E_DOWN, &vsi->state) ||
5693              new_link == netif_carrier_ok(vsi->netdev)))
5694                 return;
5695
5696         if (!test_bit(__I40E_DOWN, &vsi->state))
5697                 i40e_print_link_message(vsi, new_link);
5698
5699         /* Notify the base of the switch tree connected to
5700          * the link.  Floating VEBs are not notified.
5701          */
5702         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5703                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5704         else
5705                 i40e_vsi_link_event(vsi, new_link);
5706
5707         if (pf->vf)
5708                 i40e_vc_notify_link_state(pf);
5709
5710         if (pf->flags & I40E_FLAG_PTP)
5711                 i40e_ptp_set_increment(pf);
5712 }
5713
5714 /**
5715  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5716  * @pf: board private structure
5717  *
5718  * Set the per-queue flags to request a check for stuck queues in the irq
5719  * clean functions, then force interrupts to be sure the irq clean is called.
5720  **/
5721 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5722 {
5723         int i, v;
5724
5725         /* If we're down or resetting, just bail */
5726         if (test_bit(__I40E_DOWN, &pf->state) ||
5727             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5728                 return;
5729
5730         /* for each VSI/netdev
5731          *     for each Tx queue
5732          *         set the check flag
5733          *     for each q_vector
5734          *         force an interrupt
5735          */
5736         for (v = 0; v < pf->num_alloc_vsi; v++) {
5737                 struct i40e_vsi *vsi = pf->vsi[v];
5738                 int armed = 0;
5739
5740                 if (!pf->vsi[v] ||
5741                     test_bit(__I40E_DOWN, &vsi->state) ||
5742                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5743                         continue;
5744
5745                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5746                         set_check_for_tx_hang(vsi->tx_rings[i]);
5747                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5748                                      &vsi->tx_rings[i]->state))
5749                                 armed++;
5750                 }
5751
5752                 if (armed) {
5753                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5754                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5755                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5756                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
5757                                       I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
5758                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
5759                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
5760                         } else {
5761                                 u16 vec = vsi->base_vector - 1;
5762                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5763                                       I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK |
5764                                       I40E_PFINT_DYN_CTLN_ITR_INDX_MASK |
5765                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_ENA_MASK |
5766                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK);
5767                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5768                                         wr32(&vsi->back->hw,
5769                                              I40E_PFINT_DYN_CTLN(vec), val);
5770                         }
5771                         i40e_flush(&vsi->back->hw);
5772                 }
5773         }
5774 }
5775
5776 /**
5777  * i40e_watchdog_subtask - periodic checks not using event driven response
5778  * @pf: board private structure
5779  **/
5780 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5781 {
5782         int i;
5783
5784         /* if interface is down do nothing */
5785         if (test_bit(__I40E_DOWN, &pf->state) ||
5786             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5787                 return;
5788
5789         /* make sure we don't do these things too often */
5790         if (time_before(jiffies, (pf->service_timer_previous +
5791                                   pf->service_timer_period)))
5792                 return;
5793         pf->service_timer_previous = jiffies;
5794
5795         i40e_check_hang_subtask(pf);
5796         i40e_link_event(pf);
5797
5798         /* Update the stats for active netdevs so the network stack
5799          * can look at updated numbers whenever it cares to
5800          */
5801         for (i = 0; i < pf->num_alloc_vsi; i++)
5802                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5803                         i40e_update_stats(pf->vsi[i]);
5804
5805         /* Update the stats for the active switching components */
5806         for (i = 0; i < I40E_MAX_VEB; i++)
5807                 if (pf->veb[i])
5808                         i40e_update_veb_stats(pf->veb[i]);
5809
5810         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5811 }
5812
5813 /**
5814  * i40e_reset_subtask - Set up for resetting the device and driver
5815  * @pf: board private structure
5816  **/
5817 static void i40e_reset_subtask(struct i40e_pf *pf)
5818 {
5819         u32 reset_flags = 0;
5820
5821         rtnl_lock();
5822         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5823                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
5824                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5825         }
5826         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5827                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
5828                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5829         }
5830         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5831                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
5832                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5833         }
5834         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5835                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
5836                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5837         }
5838         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5839                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
5840                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5841         }
5842
5843         /* If there's a recovery already waiting, it takes
5844          * precedence before starting a new reset sequence.
5845          */
5846         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5847                 i40e_handle_reset_warning(pf);
5848                 goto unlock;
5849         }
5850
5851         /* If we're already down or resetting, just bail */
5852         if (reset_flags &&
5853             !test_bit(__I40E_DOWN, &pf->state) &&
5854             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5855                 i40e_do_reset(pf, reset_flags);
5856
5857 unlock:
5858         rtnl_unlock();
5859 }
5860
5861 /**
5862  * i40e_handle_link_event - Handle link event
5863  * @pf: board private structure
5864  * @e: event info posted on ARQ
5865  **/
5866 static void i40e_handle_link_event(struct i40e_pf *pf,
5867                                    struct i40e_arq_event_info *e)
5868 {
5869         struct i40e_hw *hw = &pf->hw;
5870         struct i40e_aqc_get_link_status *status =
5871                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5872
5873         /* save off old link status information */
5874         hw->phy.link_info_old = hw->phy.link_info;
5875
5876         /* Do a new status request to re-enable LSE reporting
5877          * and load new status information into the hw struct
5878          * This completely ignores any state information
5879          * in the ARQ event info, instead choosing to always
5880          * issue the AQ update link status command.
5881          */
5882         i40e_link_event(pf);
5883
5884         /* check for unqualified module, if link is down */
5885         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5886             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5887             (!(status->link_info & I40E_AQ_LINK_UP)))
5888                 dev_err(&pf->pdev->dev,
5889                         "The driver failed to link because an unqualified module was detected.\n");
5890 }
5891
5892 /**
5893  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5894  * @pf: board private structure
5895  **/
5896 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5897 {
5898         struct i40e_arq_event_info event;
5899         struct i40e_hw *hw = &pf->hw;
5900         u16 pending, i = 0;
5901         i40e_status ret;
5902         u16 opcode;
5903         u32 oldval;
5904         u32 val;
5905
5906         /* Do not run clean AQ when PF reset fails */
5907         if (test_bit(__I40E_RESET_FAILED, &pf->state))
5908                 return;
5909
5910         /* check for error indications */
5911         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5912         oldval = val;
5913         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5914                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5915                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5916         }
5917         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5918                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5919                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5920         }
5921         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5922                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5923                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5924         }
5925         if (oldval != val)
5926                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5927
5928         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5929         oldval = val;
5930         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5931                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5932                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5933         }
5934         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5935                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5936                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5937         }
5938         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5939                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5940                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5941         }
5942         if (oldval != val)
5943                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5944
5945         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
5946         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
5947         if (!event.msg_buf)
5948                 return;
5949
5950         do {
5951                 ret = i40e_clean_arq_element(hw, &event, &pending);
5952                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
5953                         break;
5954                 else if (ret) {
5955                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5956                         break;
5957                 }
5958
5959                 opcode = le16_to_cpu(event.desc.opcode);
5960                 switch (opcode) {
5961
5962                 case i40e_aqc_opc_get_link_status:
5963                         i40e_handle_link_event(pf, &event);
5964                         break;
5965                 case i40e_aqc_opc_send_msg_to_pf:
5966                         ret = i40e_vc_process_vf_msg(pf,
5967                                         le16_to_cpu(event.desc.retval),
5968                                         le32_to_cpu(event.desc.cookie_high),
5969                                         le32_to_cpu(event.desc.cookie_low),
5970                                         event.msg_buf,
5971                                         event.msg_len);
5972                         break;
5973                 case i40e_aqc_opc_lldp_update_mib:
5974                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5975 #ifdef CONFIG_I40E_DCB
5976                         rtnl_lock();
5977                         ret = i40e_handle_lldp_event(pf, &event);
5978                         rtnl_unlock();
5979 #endif /* CONFIG_I40E_DCB */
5980                         break;
5981                 case i40e_aqc_opc_event_lan_overflow:
5982                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5983                         i40e_handle_lan_overflow_event(pf, &event);
5984                         break;
5985                 case i40e_aqc_opc_send_msg_to_peer:
5986                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5987                         break;
5988                 case i40e_aqc_opc_nvm_erase:
5989                 case i40e_aqc_opc_nvm_update:
5990                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
5991                         break;
5992                 default:
5993                         dev_info(&pf->pdev->dev,
5994                                  "ARQ Error: Unknown event 0x%04x received\n",
5995                                  opcode);
5996                         break;
5997                 }
5998         } while (pending && (i++ < pf->adminq_work_limit));
5999
6000         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6001         /* re-enable Admin queue interrupt cause */
6002         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6003         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6004         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6005         i40e_flush(hw);
6006
6007         kfree(event.msg_buf);
6008 }
6009
6010 /**
6011  * i40e_verify_eeprom - make sure eeprom is good to use
6012  * @pf: board private structure
6013  **/
6014 static void i40e_verify_eeprom(struct i40e_pf *pf)
6015 {
6016         int err;
6017
6018         err = i40e_diag_eeprom_test(&pf->hw);
6019         if (err) {
6020                 /* retry in case of garbage read */
6021                 err = i40e_diag_eeprom_test(&pf->hw);
6022                 if (err) {
6023                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6024                                  err);
6025                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6026                 }
6027         }
6028
6029         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6030                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6031                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6032         }
6033 }
6034
6035 /**
6036  * i40e_enable_pf_switch_lb
6037  * @pf: pointer to the PF structure
6038  *
6039  * enable switch loop back or die - no point in a return value
6040  **/
6041 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6042 {
6043         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6044         struct i40e_vsi_context ctxt;
6045         int ret;
6046
6047         ctxt.seid = pf->main_vsi_seid;
6048         ctxt.pf_num = pf->hw.pf_id;
6049         ctxt.vf_num = 0;
6050         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6051         if (ret) {
6052                 dev_info(&pf->pdev->dev,
6053                          "couldn't get PF vsi config, err %s aq_err %s\n",
6054                          i40e_stat_str(&pf->hw, ret),
6055                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6056                 return;
6057         }
6058         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6059         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6060         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6061
6062         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6063         if (ret) {
6064                 dev_info(&pf->pdev->dev,
6065                          "update vsi switch failed, err %s aq_err %s\n",
6066                          i40e_stat_str(&pf->hw, ret),
6067                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6068         }
6069 }
6070
6071 /**
6072  * i40e_disable_pf_switch_lb
6073  * @pf: pointer to the PF structure
6074  *
6075  * disable switch loop back or die - no point in a return value
6076  **/
6077 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6078 {
6079         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6080         struct i40e_vsi_context ctxt;
6081         int ret;
6082
6083         ctxt.seid = pf->main_vsi_seid;
6084         ctxt.pf_num = pf->hw.pf_id;
6085         ctxt.vf_num = 0;
6086         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6087         if (ret) {
6088                 dev_info(&pf->pdev->dev,
6089                          "couldn't get PF vsi config, err %s aq_err %s\n",
6090                          i40e_stat_str(&pf->hw, ret),
6091                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6092                 return;
6093         }
6094         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6095         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6096         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6097
6098         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6099         if (ret) {
6100                 dev_info(&pf->pdev->dev,
6101                          "update vsi switch failed, err %s aq_err %s\n",
6102                          i40e_stat_str(&pf->hw, ret),
6103                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6104         }
6105 }
6106
6107 /**
6108  * i40e_config_bridge_mode - Configure the HW bridge mode
6109  * @veb: pointer to the bridge instance
6110  *
6111  * Configure the loop back mode for the LAN VSI that is downlink to the
6112  * specified HW bridge instance. It is expected this function is called
6113  * when a new HW bridge is instantiated.
6114  **/
6115 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6116 {
6117         struct i40e_pf *pf = veb->pf;
6118
6119         dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6120                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6121         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6122                 i40e_disable_pf_switch_lb(pf);
6123         else
6124                 i40e_enable_pf_switch_lb(pf);
6125 }
6126
6127 /**
6128  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6129  * @veb: pointer to the VEB instance
6130  *
6131  * This is a recursive function that first builds the attached VSIs then
6132  * recurses in to build the next layer of VEB.  We track the connections
6133  * through our own index numbers because the seid's from the HW could
6134  * change across the reset.
6135  **/
6136 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6137 {
6138         struct i40e_vsi *ctl_vsi = NULL;
6139         struct i40e_pf *pf = veb->pf;
6140         int v, veb_idx;
6141         int ret;
6142
6143         /* build VSI that owns this VEB, temporarily attached to base VEB */
6144         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6145                 if (pf->vsi[v] &&
6146                     pf->vsi[v]->veb_idx == veb->idx &&
6147                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6148                         ctl_vsi = pf->vsi[v];
6149                         break;
6150                 }
6151         }
6152         if (!ctl_vsi) {
6153                 dev_info(&pf->pdev->dev,
6154                          "missing owner VSI for veb_idx %d\n", veb->idx);
6155                 ret = -ENOENT;
6156                 goto end_reconstitute;
6157         }
6158         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6159                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6160         ret = i40e_add_vsi(ctl_vsi);
6161         if (ret) {
6162                 dev_info(&pf->pdev->dev,
6163                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6164                          veb->idx, ret);
6165                 goto end_reconstitute;
6166         }
6167         i40e_vsi_reset_stats(ctl_vsi);
6168
6169         /* create the VEB in the switch and move the VSI onto the VEB */
6170         ret = i40e_add_veb(veb, ctl_vsi);
6171         if (ret)
6172                 goto end_reconstitute;
6173
6174         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6175                 veb->bridge_mode = BRIDGE_MODE_VEB;
6176         else
6177                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6178         i40e_config_bridge_mode(veb);
6179
6180         /* create the remaining VSIs attached to this VEB */
6181         for (v = 0; v < pf->num_alloc_vsi; v++) {
6182                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6183                         continue;
6184
6185                 if (pf->vsi[v]->veb_idx == veb->idx) {
6186                         struct i40e_vsi *vsi = pf->vsi[v];
6187                         vsi->uplink_seid = veb->seid;
6188                         ret = i40e_add_vsi(vsi);
6189                         if (ret) {
6190                                 dev_info(&pf->pdev->dev,
6191                                          "rebuild of vsi_idx %d failed: %d\n",
6192                                          v, ret);
6193                                 goto end_reconstitute;
6194                         }
6195                         i40e_vsi_reset_stats(vsi);
6196                 }
6197         }
6198
6199         /* create any VEBs attached to this VEB - RECURSION */
6200         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6201                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6202                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6203                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6204                         if (ret)
6205                                 break;
6206                 }
6207         }
6208
6209 end_reconstitute:
6210         return ret;
6211 }
6212
6213 /**
6214  * i40e_get_capabilities - get info about the HW
6215  * @pf: the PF struct
6216  **/
6217 static int i40e_get_capabilities(struct i40e_pf *pf)
6218 {
6219         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6220         u16 data_size;
6221         int buf_len;
6222         int err;
6223
6224         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6225         do {
6226                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6227                 if (!cap_buf)
6228                         return -ENOMEM;
6229
6230                 /* this loads the data into the hw struct for us */
6231                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6232                                             &data_size,
6233                                             i40e_aqc_opc_list_func_capabilities,
6234                                             NULL);
6235                 /* data loaded, buffer no longer needed */
6236                 kfree(cap_buf);
6237
6238                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6239                         /* retry with a larger buffer */
6240                         buf_len = data_size;
6241                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6242                         dev_info(&pf->pdev->dev,
6243                                  "capability discovery failed, err %s aq_err %s\n",
6244                                  i40e_stat_str(&pf->hw, err),
6245                                  i40e_aq_str(&pf->hw,
6246                                              pf->hw.aq.asq_last_status));
6247                         return -ENODEV;
6248                 }
6249         } while (err);
6250
6251         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6252             (pf->hw.aq.fw_maj_ver < 2)) {
6253                 pf->hw.func_caps.num_msix_vectors++;
6254                 pf->hw.func_caps.num_msix_vectors_vf++;
6255         }
6256
6257         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6258                 dev_info(&pf->pdev->dev,
6259                          "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",
6260                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6261                          pf->hw.func_caps.num_msix_vectors,
6262                          pf->hw.func_caps.num_msix_vectors_vf,
6263                          pf->hw.func_caps.fd_filters_guaranteed,
6264                          pf->hw.func_caps.fd_filters_best_effort,
6265                          pf->hw.func_caps.num_tx_qp,
6266                          pf->hw.func_caps.num_vsis);
6267
6268 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6269                        + pf->hw.func_caps.num_vfs)
6270         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6271                 dev_info(&pf->pdev->dev,
6272                          "got num_vsis %d, setting num_vsis to %d\n",
6273                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6274                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6275         }
6276
6277         return 0;
6278 }
6279
6280 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6281
6282 /**
6283  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6284  * @pf: board private structure
6285  **/
6286 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6287 {
6288         struct i40e_vsi *vsi;
6289         int i;
6290
6291         /* quick workaround for an NVM issue that leaves a critical register
6292          * uninitialized
6293          */
6294         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6295                 static const u32 hkey[] = {
6296                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6297                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6298                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6299                         0x95b3a76d};
6300
6301                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6302                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6303         }
6304
6305         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6306                 return;
6307
6308         /* find existing VSI and see if it needs configuring */
6309         vsi = NULL;
6310         for (i = 0; i < pf->num_alloc_vsi; i++) {
6311                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6312                         vsi = pf->vsi[i];
6313                         break;
6314                 }
6315         }
6316
6317         /* create a new VSI if none exists */
6318         if (!vsi) {
6319                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6320                                      pf->vsi[pf->lan_vsi]->seid, 0);
6321                 if (!vsi) {
6322                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6323                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6324                         return;
6325                 }
6326         }
6327
6328         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6329 }
6330
6331 /**
6332  * i40e_fdir_teardown - release the Flow Director resources
6333  * @pf: board private structure
6334  **/
6335 static void i40e_fdir_teardown(struct i40e_pf *pf)
6336 {
6337         int i;
6338
6339         i40e_fdir_filter_exit(pf);
6340         for (i = 0; i < pf->num_alloc_vsi; i++) {
6341                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6342                         i40e_vsi_release(pf->vsi[i]);
6343                         break;
6344                 }
6345         }
6346 }
6347
6348 /**
6349  * i40e_prep_for_reset - prep for the core to reset
6350  * @pf: board private structure
6351  *
6352  * Close up the VFs and other things in prep for PF Reset.
6353   **/
6354 static void i40e_prep_for_reset(struct i40e_pf *pf)
6355 {
6356         struct i40e_hw *hw = &pf->hw;
6357         i40e_status ret = 0;
6358         u32 v;
6359
6360         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6361         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6362                 return;
6363
6364         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6365
6366         /* quiesce the VSIs and their queues that are not already DOWN */
6367         i40e_pf_quiesce_all_vsi(pf);
6368
6369         for (v = 0; v < pf->num_alloc_vsi; v++) {
6370                 if (pf->vsi[v])
6371                         pf->vsi[v]->seid = 0;
6372         }
6373
6374         i40e_shutdown_adminq(&pf->hw);
6375
6376         /* call shutdown HMC */
6377         if (hw->hmc.hmc_obj) {
6378                 ret = i40e_shutdown_lan_hmc(hw);
6379                 if (ret)
6380                         dev_warn(&pf->pdev->dev,
6381                                  "shutdown_lan_hmc failed: %d\n", ret);
6382         }
6383 }
6384
6385 /**
6386  * i40e_send_version - update firmware with driver version
6387  * @pf: PF struct
6388  */
6389 static void i40e_send_version(struct i40e_pf *pf)
6390 {
6391         struct i40e_driver_version dv;
6392
6393         dv.major_version = DRV_VERSION_MAJOR;
6394         dv.minor_version = DRV_VERSION_MINOR;
6395         dv.build_version = DRV_VERSION_BUILD;
6396         dv.subbuild_version = 0;
6397         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6398         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6399 }
6400
6401 /**
6402  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6403  * @pf: board private structure
6404  * @reinit: if the Main VSI needs to re-initialized.
6405  **/
6406 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6407 {
6408         struct i40e_hw *hw = &pf->hw;
6409         u8 set_fc_aq_fail = 0;
6410         i40e_status ret;
6411         u32 v;
6412
6413         /* Now we wait for GRST to settle out.
6414          * We don't have to delete the VEBs or VSIs from the hw switch
6415          * because the reset will make them disappear.
6416          */
6417         ret = i40e_pf_reset(hw);
6418         if (ret) {
6419                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6420                 set_bit(__I40E_RESET_FAILED, &pf->state);
6421                 goto clear_recovery;
6422         }
6423         pf->pfr_count++;
6424
6425         if (test_bit(__I40E_DOWN, &pf->state))
6426                 goto clear_recovery;
6427         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6428
6429         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6430         ret = i40e_init_adminq(&pf->hw);
6431         if (ret) {
6432                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6433                          i40e_stat_str(&pf->hw, ret),
6434                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6435                 goto clear_recovery;
6436         }
6437
6438         /* re-verify the eeprom if we just had an EMP reset */
6439         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6440                 i40e_verify_eeprom(pf);
6441
6442         i40e_clear_pxe_mode(hw);
6443         ret = i40e_get_capabilities(pf);
6444         if (ret)
6445                 goto end_core_reset;
6446
6447         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6448                                 hw->func_caps.num_rx_qp,
6449                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6450         if (ret) {
6451                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6452                 goto end_core_reset;
6453         }
6454         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6455         if (ret) {
6456                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6457                 goto end_core_reset;
6458         }
6459
6460 #ifdef CONFIG_I40E_DCB
6461         ret = i40e_init_pf_dcb(pf);
6462         if (ret) {
6463                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6464                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6465                 /* Continue without DCB enabled */
6466         }
6467 #endif /* CONFIG_I40E_DCB */
6468 #ifdef I40E_FCOE
6469         ret = i40e_init_pf_fcoe(pf);
6470         if (ret)
6471                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6472
6473 #endif
6474         /* do basic switch setup */
6475         ret = i40e_setup_pf_switch(pf, reinit);
6476         if (ret)
6477                 goto end_core_reset;
6478
6479         /* driver is only interested in link up/down and module qualification
6480          * reports from firmware
6481          */
6482         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6483                                        I40E_AQ_EVENT_LINK_UPDOWN |
6484                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6485         if (ret)
6486                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6487                          i40e_stat_str(&pf->hw, ret),
6488                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6489
6490         /* make sure our flow control settings are restored */
6491         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6492         if (ret)
6493                 dev_info(&pf->pdev->dev, "set fc fail, err %s aq_err %s\n",
6494                          i40e_stat_str(&pf->hw, ret),
6495                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6496
6497         /* Rebuild the VSIs and VEBs that existed before reset.
6498          * They are still in our local switch element arrays, so only
6499          * need to rebuild the switch model in the HW.
6500          *
6501          * If there were VEBs but the reconstitution failed, we'll try
6502          * try to recover minimal use by getting the basic PF VSI working.
6503          */
6504         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6505                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6506                 /* find the one VEB connected to the MAC, and find orphans */
6507                 for (v = 0; v < I40E_MAX_VEB; v++) {
6508                         if (!pf->veb[v])
6509                                 continue;
6510
6511                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6512                             pf->veb[v]->uplink_seid == 0) {
6513                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6514
6515                                 if (!ret)
6516                                         continue;
6517
6518                                 /* If Main VEB failed, we're in deep doodoo,
6519                                  * so give up rebuilding the switch and set up
6520                                  * for minimal rebuild of PF VSI.
6521                                  * If orphan failed, we'll report the error
6522                                  * but try to keep going.
6523                                  */
6524                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6525                                         dev_info(&pf->pdev->dev,
6526                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6527                                                  ret);
6528                                         pf->vsi[pf->lan_vsi]->uplink_seid
6529                                                                 = pf->mac_seid;
6530                                         break;
6531                                 } else if (pf->veb[v]->uplink_seid == 0) {
6532                                         dev_info(&pf->pdev->dev,
6533                                                  "rebuild of orphan VEB failed: %d\n",
6534                                                  ret);
6535                                 }
6536                         }
6537                 }
6538         }
6539
6540         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6541                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6542                 /* no VEB, so rebuild only the Main VSI */
6543                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6544                 if (ret) {
6545                         dev_info(&pf->pdev->dev,
6546                                  "rebuild of Main VSI failed: %d\n", ret);
6547                         goto end_core_reset;
6548                 }
6549         }
6550
6551         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6552             (pf->hw.aq.fw_maj_ver < 4)) {
6553                 msleep(75);
6554                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6555                 if (ret)
6556                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6557                                  i40e_stat_str(&pf->hw, ret),
6558                                  i40e_aq_str(&pf->hw,
6559                                              pf->hw.aq.asq_last_status));
6560         }
6561         /* reinit the misc interrupt */
6562         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6563                 ret = i40e_setup_misc_vector(pf);
6564
6565         /* restart the VSIs that were rebuilt and running before the reset */
6566         i40e_pf_unquiesce_all_vsi(pf);
6567
6568         if (pf->num_alloc_vfs) {
6569                 for (v = 0; v < pf->num_alloc_vfs; v++)
6570                         i40e_reset_vf(&pf->vf[v], true);
6571         }
6572
6573         /* tell the firmware that we're starting */
6574         i40e_send_version(pf);
6575
6576 end_core_reset:
6577         clear_bit(__I40E_RESET_FAILED, &pf->state);
6578 clear_recovery:
6579         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6580 }
6581
6582 /**
6583  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6584  * @pf: board private structure
6585  *
6586  * Close up the VFs and other things in prep for a Core Reset,
6587  * then get ready to rebuild the world.
6588  **/
6589 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6590 {
6591         i40e_prep_for_reset(pf);
6592         i40e_reset_and_rebuild(pf, false);
6593 }
6594
6595 /**
6596  * i40e_handle_mdd_event
6597  * @pf: pointer to the PF structure
6598  *
6599  * Called from the MDD irq handler to identify possibly malicious vfs
6600  **/
6601 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6602 {
6603         struct i40e_hw *hw = &pf->hw;
6604         bool mdd_detected = false;
6605         bool pf_mdd_detected = false;
6606         struct i40e_vf *vf;
6607         u32 reg;
6608         int i;
6609
6610         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6611                 return;
6612
6613         /* find what triggered the MDD event */
6614         reg = rd32(hw, I40E_GL_MDET_TX);
6615         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6616                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6617                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6618                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6619                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6620                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6621                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6622                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6623                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6624                                 pf->hw.func_caps.base_queue;
6625                 if (netif_msg_tx_err(pf))
6626                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6627                                  event, queue, pf_num, vf_num);
6628                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6629                 mdd_detected = true;
6630         }
6631         reg = rd32(hw, I40E_GL_MDET_RX);
6632         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6633                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6634                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6635                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6636                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6637                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6638                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6639                                 pf->hw.func_caps.base_queue;
6640                 if (netif_msg_rx_err(pf))
6641                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6642                                  event, queue, func);
6643                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6644                 mdd_detected = true;
6645         }
6646
6647         if (mdd_detected) {
6648                 reg = rd32(hw, I40E_PF_MDET_TX);
6649                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6650                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6651                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6652                         pf_mdd_detected = true;
6653                 }
6654                 reg = rd32(hw, I40E_PF_MDET_RX);
6655                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6656                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6657                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6658                         pf_mdd_detected = true;
6659                 }
6660                 /* Queue belongs to the PF, initiate a reset */
6661                 if (pf_mdd_detected) {
6662                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6663                         i40e_service_event_schedule(pf);
6664                 }
6665         }
6666
6667         /* see if one of the VFs needs its hand slapped */
6668         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6669                 vf = &(pf->vf[i]);
6670                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6671                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6672                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6673                         vf->num_mdd_events++;
6674                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6675                                  i);
6676                 }
6677
6678                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6679                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6680                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6681                         vf->num_mdd_events++;
6682                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6683                                  i);
6684                 }
6685
6686                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6687                         dev_info(&pf->pdev->dev,
6688                                  "Too many MDD events on VF %d, disabled\n", i);
6689                         dev_info(&pf->pdev->dev,
6690                                  "Use PF Control I/F to re-enable the VF\n");
6691                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6692                 }
6693         }
6694
6695         /* re-enable mdd interrupt cause */
6696         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6697         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6698         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6699         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6700         i40e_flush(hw);
6701 }
6702
6703 #ifdef CONFIG_I40E_VXLAN
6704 /**
6705  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6706  * @pf: board private structure
6707  **/
6708 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6709 {
6710         struct i40e_hw *hw = &pf->hw;
6711         i40e_status ret;
6712         __be16 port;
6713         int i;
6714
6715         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6716                 return;
6717
6718         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6719
6720         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6721                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
6722                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
6723                         port = pf->vxlan_ports[i];
6724                         if (port)
6725                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
6726                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6727                                                      NULL, NULL);
6728                         else
6729                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
6730
6731                         if (ret) {
6732                                 dev_info(&pf->pdev->dev,
6733                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
6734                                          port ? "add" : "delete",
6735                                          ntohs(port), i,
6736                                          i40e_stat_str(&pf->hw, ret),
6737                                          i40e_aq_str(&pf->hw,
6738                                                     pf->hw.aq.asq_last_status));
6739                                 pf->vxlan_ports[i] = 0;
6740                         }
6741                 }
6742         }
6743 }
6744
6745 #endif
6746 /**
6747  * i40e_service_task - Run the driver's async subtasks
6748  * @work: pointer to work_struct containing our data
6749  **/
6750 static void i40e_service_task(struct work_struct *work)
6751 {
6752         struct i40e_pf *pf = container_of(work,
6753                                           struct i40e_pf,
6754                                           service_task);
6755         unsigned long start_time = jiffies;
6756
6757         /* don't bother with service tasks if a reset is in progress */
6758         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6759                 i40e_service_event_complete(pf);
6760                 return;
6761         }
6762
6763         i40e_reset_subtask(pf);
6764         i40e_handle_mdd_event(pf);
6765         i40e_vc_process_vflr_event(pf);
6766         i40e_watchdog_subtask(pf);
6767         i40e_fdir_reinit_subtask(pf);
6768         i40e_sync_filters_subtask(pf);
6769 #ifdef CONFIG_I40E_VXLAN
6770         i40e_sync_vxlan_filters_subtask(pf);
6771 #endif
6772         i40e_clean_adminq_subtask(pf);
6773
6774         i40e_service_event_complete(pf);
6775
6776         /* If the tasks have taken longer than one timer cycle or there
6777          * is more work to be done, reschedule the service task now
6778          * rather than wait for the timer to tick again.
6779          */
6780         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6781             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6782             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6783             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6784                 i40e_service_event_schedule(pf);
6785 }
6786
6787 /**
6788  * i40e_service_timer - timer callback
6789  * @data: pointer to PF struct
6790  **/
6791 static void i40e_service_timer(unsigned long data)
6792 {
6793         struct i40e_pf *pf = (struct i40e_pf *)data;
6794
6795         mod_timer(&pf->service_timer,
6796                   round_jiffies(jiffies + pf->service_timer_period));
6797         i40e_service_event_schedule(pf);
6798 }
6799
6800 /**
6801  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6802  * @vsi: the VSI being configured
6803  **/
6804 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6805 {
6806         struct i40e_pf *pf = vsi->back;
6807
6808         switch (vsi->type) {
6809         case I40E_VSI_MAIN:
6810                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6811                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6812                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6813                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6814                         vsi->num_q_vectors = pf->num_lan_msix;
6815                 else
6816                         vsi->num_q_vectors = 1;
6817
6818                 break;
6819
6820         case I40E_VSI_FDIR:
6821                 vsi->alloc_queue_pairs = 1;
6822                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6823                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6824                 vsi->num_q_vectors = 1;
6825                 break;
6826
6827         case I40E_VSI_VMDQ2:
6828                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6829                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6830                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6831                 vsi->num_q_vectors = pf->num_vmdq_msix;
6832                 break;
6833
6834         case I40E_VSI_SRIOV:
6835                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6836                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6837                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6838                 break;
6839
6840 #ifdef I40E_FCOE
6841         case I40E_VSI_FCOE:
6842                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6843                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6844                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6845                 vsi->num_q_vectors = pf->num_fcoe_msix;
6846                 break;
6847
6848 #endif /* I40E_FCOE */
6849         default:
6850                 WARN_ON(1);
6851                 return -ENODATA;
6852         }
6853
6854         return 0;
6855 }
6856
6857 /**
6858  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6859  * @type: VSI pointer
6860  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6861  *
6862  * On error: returns error code (negative)
6863  * On success: returns 0
6864  **/
6865 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6866 {
6867         int size;
6868         int ret = 0;
6869
6870         /* allocate memory for both Tx and Rx ring pointers */
6871         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6872         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6873         if (!vsi->tx_rings)
6874                 return -ENOMEM;
6875         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6876
6877         if (alloc_qvectors) {
6878                 /* allocate memory for q_vector pointers */
6879                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6880                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6881                 if (!vsi->q_vectors) {
6882                         ret = -ENOMEM;
6883                         goto err_vectors;
6884                 }
6885         }
6886         return ret;
6887
6888 err_vectors:
6889         kfree(vsi->tx_rings);
6890         return ret;
6891 }
6892
6893 /**
6894  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6895  * @pf: board private structure
6896  * @type: type of VSI
6897  *
6898  * On error: returns error code (negative)
6899  * On success: returns vsi index in PF (positive)
6900  **/
6901 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6902 {
6903         int ret = -ENODEV;
6904         struct i40e_vsi *vsi;
6905         int vsi_idx;
6906         int i;
6907
6908         /* Need to protect the allocation of the VSIs at the PF level */
6909         mutex_lock(&pf->switch_mutex);
6910
6911         /* VSI list may be fragmented if VSI creation/destruction has
6912          * been happening.  We can afford to do a quick scan to look
6913          * for any free VSIs in the list.
6914          *
6915          * find next empty vsi slot, looping back around if necessary
6916          */
6917         i = pf->next_vsi;
6918         while (i < pf->num_alloc_vsi && pf->vsi[i])
6919                 i++;
6920         if (i >= pf->num_alloc_vsi) {
6921                 i = 0;
6922                 while (i < pf->next_vsi && pf->vsi[i])
6923                         i++;
6924         }
6925
6926         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6927                 vsi_idx = i;             /* Found one! */
6928         } else {
6929                 ret = -ENODEV;
6930                 goto unlock_pf;  /* out of VSI slots! */
6931         }
6932         pf->next_vsi = ++i;
6933
6934         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6935         if (!vsi) {
6936                 ret = -ENOMEM;
6937                 goto unlock_pf;
6938         }
6939         vsi->type = type;
6940         vsi->back = pf;
6941         set_bit(__I40E_DOWN, &vsi->state);
6942         vsi->flags = 0;
6943         vsi->idx = vsi_idx;
6944         vsi->rx_itr_setting = pf->rx_itr_default;
6945         vsi->tx_itr_setting = pf->tx_itr_default;
6946         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
6947                                 pf->rss_table_size : 64;
6948         vsi->netdev_registered = false;
6949         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6950         INIT_LIST_HEAD(&vsi->mac_filter_list);
6951         vsi->irqs_ready = false;
6952
6953         ret = i40e_set_num_rings_in_vsi(vsi);
6954         if (ret)
6955                 goto err_rings;
6956
6957         ret = i40e_vsi_alloc_arrays(vsi, true);
6958         if (ret)
6959                 goto err_rings;
6960
6961         /* Setup default MSIX irq handler for VSI */
6962         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6963
6964         pf->vsi[vsi_idx] = vsi;
6965         ret = vsi_idx;
6966         goto unlock_pf;
6967
6968 err_rings:
6969         pf->next_vsi = i - 1;
6970         kfree(vsi);
6971 unlock_pf:
6972         mutex_unlock(&pf->switch_mutex);
6973         return ret;
6974 }
6975
6976 /**
6977  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6978  * @type: VSI pointer
6979  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6980  *
6981  * On error: returns error code (negative)
6982  * On success: returns 0
6983  **/
6984 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6985 {
6986         /* free the ring and vector containers */
6987         if (free_qvectors) {
6988                 kfree(vsi->q_vectors);
6989                 vsi->q_vectors = NULL;
6990         }
6991         kfree(vsi->tx_rings);
6992         vsi->tx_rings = NULL;
6993         vsi->rx_rings = NULL;
6994 }
6995
6996 /**
6997  * i40e_vsi_clear - Deallocate the VSI provided
6998  * @vsi: the VSI being un-configured
6999  **/
7000 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7001 {
7002         struct i40e_pf *pf;
7003
7004         if (!vsi)
7005                 return 0;
7006
7007         if (!vsi->back)
7008                 goto free_vsi;
7009         pf = vsi->back;
7010
7011         mutex_lock(&pf->switch_mutex);
7012         if (!pf->vsi[vsi->idx]) {
7013                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7014                         vsi->idx, vsi->idx, vsi, vsi->type);
7015                 goto unlock_vsi;
7016         }
7017
7018         if (pf->vsi[vsi->idx] != vsi) {
7019                 dev_err(&pf->pdev->dev,
7020                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7021                         pf->vsi[vsi->idx]->idx,
7022                         pf->vsi[vsi->idx],
7023                         pf->vsi[vsi->idx]->type,
7024                         vsi->idx, vsi, vsi->type);
7025                 goto unlock_vsi;
7026         }
7027
7028         /* updates the PF for this cleared vsi */
7029         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7030         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7031
7032         i40e_vsi_free_arrays(vsi, true);
7033
7034         pf->vsi[vsi->idx] = NULL;
7035         if (vsi->idx < pf->next_vsi)
7036                 pf->next_vsi = vsi->idx;
7037
7038 unlock_vsi:
7039         mutex_unlock(&pf->switch_mutex);
7040 free_vsi:
7041         kfree(vsi);
7042
7043         return 0;
7044 }
7045
7046 /**
7047  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7048  * @vsi: the VSI being cleaned
7049  **/
7050 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7051 {
7052         int i;
7053
7054         if (vsi->tx_rings && vsi->tx_rings[0]) {
7055                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7056                         kfree_rcu(vsi->tx_rings[i], rcu);
7057                         vsi->tx_rings[i] = NULL;
7058                         vsi->rx_rings[i] = NULL;
7059                 }
7060         }
7061 }
7062
7063 /**
7064  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7065  * @vsi: the VSI being configured
7066  **/
7067 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7068 {
7069         struct i40e_ring *tx_ring, *rx_ring;
7070         struct i40e_pf *pf = vsi->back;
7071         int i;
7072
7073         /* Set basic values in the rings to be used later during open() */
7074         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7075                 /* allocate space for both Tx and Rx in one shot */
7076                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7077                 if (!tx_ring)
7078                         goto err_out;
7079
7080                 tx_ring->queue_index = i;
7081                 tx_ring->reg_idx = vsi->base_queue + i;
7082                 tx_ring->ring_active = false;
7083                 tx_ring->vsi = vsi;
7084                 tx_ring->netdev = vsi->netdev;
7085                 tx_ring->dev = &pf->pdev->dev;
7086                 tx_ring->count = vsi->num_desc;
7087                 tx_ring->size = 0;
7088                 tx_ring->dcb_tc = 0;
7089                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7090                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7091                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7092                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7093                 vsi->tx_rings[i] = tx_ring;
7094
7095                 rx_ring = &tx_ring[1];
7096                 rx_ring->queue_index = i;
7097                 rx_ring->reg_idx = vsi->base_queue + i;
7098                 rx_ring->ring_active = false;
7099                 rx_ring->vsi = vsi;
7100                 rx_ring->netdev = vsi->netdev;
7101                 rx_ring->dev = &pf->pdev->dev;
7102                 rx_ring->count = vsi->num_desc;
7103                 rx_ring->size = 0;
7104                 rx_ring->dcb_tc = 0;
7105                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7106                         set_ring_16byte_desc_enabled(rx_ring);
7107                 else
7108                         clear_ring_16byte_desc_enabled(rx_ring);
7109                 vsi->rx_rings[i] = rx_ring;
7110         }
7111
7112         return 0;
7113
7114 err_out:
7115         i40e_vsi_clear_rings(vsi);
7116         return -ENOMEM;
7117 }
7118
7119 /**
7120  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7121  * @pf: board private structure
7122  * @vectors: the number of MSI-X vectors to request
7123  *
7124  * Returns the number of vectors reserved, or error
7125  **/
7126 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7127 {
7128         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7129                                         I40E_MIN_MSIX, vectors);
7130         if (vectors < 0) {
7131                 dev_info(&pf->pdev->dev,
7132                          "MSI-X vector reservation failed: %d\n", vectors);
7133                 vectors = 0;
7134         }
7135
7136         return vectors;
7137 }
7138
7139 /**
7140  * i40e_init_msix - Setup the MSIX capability
7141  * @pf: board private structure
7142  *
7143  * Work with the OS to set up the MSIX vectors needed.
7144  *
7145  * Returns the number of vectors reserved or negative on failure
7146  **/
7147 static int i40e_init_msix(struct i40e_pf *pf)
7148 {
7149         struct i40e_hw *hw = &pf->hw;
7150         int vectors_left;
7151         int v_budget, i;
7152         int v_actual;
7153
7154         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7155                 return -ENODEV;
7156
7157         /* The number of vectors we'll request will be comprised of:
7158          *   - Add 1 for "other" cause for Admin Queue events, etc.
7159          *   - The number of LAN queue pairs
7160          *      - Queues being used for RSS.
7161          *              We don't need as many as max_rss_size vectors.
7162          *              use rss_size instead in the calculation since that
7163          *              is governed by number of cpus in the system.
7164          *      - assumes symmetric Tx/Rx pairing
7165          *   - The number of VMDq pairs
7166 #ifdef I40E_FCOE
7167          *   - The number of FCOE qps.
7168 #endif
7169          * Once we count this up, try the request.
7170          *
7171          * If we can't get what we want, we'll simplify to nearly nothing
7172          * and try again.  If that still fails, we punt.
7173          */
7174         vectors_left = hw->func_caps.num_msix_vectors;
7175         v_budget = 0;
7176
7177         /* reserve one vector for miscellaneous handler */
7178         if (vectors_left) {
7179                 v_budget++;
7180                 vectors_left--;
7181         }
7182
7183         /* reserve vectors for the main PF traffic queues */
7184         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7185         vectors_left -= pf->num_lan_msix;
7186         v_budget += pf->num_lan_msix;
7187
7188         /* reserve one vector for sideband flow director */
7189         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7190                 if (vectors_left) {
7191                         v_budget++;
7192                         vectors_left--;
7193                 } else {
7194                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7195                 }
7196         }
7197
7198 #ifdef I40E_FCOE
7199         /* can we reserve enough for FCoE? */
7200         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7201                 if (!vectors_left)
7202                         pf->num_fcoe_msix = 0;
7203                 else if (vectors_left >= pf->num_fcoe_qps)
7204                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7205                 else
7206                         pf->num_fcoe_msix = 1;
7207                 v_budget += pf->num_fcoe_msix;
7208                 vectors_left -= pf->num_fcoe_msix;
7209         }
7210
7211 #endif
7212         /* any vectors left over go for VMDq support */
7213         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7214                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7215                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7216
7217                 /* if we're short on vectors for what's desired, we limit
7218                  * the queues per vmdq.  If this is still more than are
7219                  * available, the user will need to change the number of
7220                  * queues/vectors used by the PF later with the ethtool
7221                  * channels command
7222                  */
7223                 if (vmdq_vecs < vmdq_vecs_wanted)
7224                         pf->num_vmdq_qps = 1;
7225                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7226
7227                 v_budget += vmdq_vecs;
7228                 vectors_left -= vmdq_vecs;
7229         }
7230
7231         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7232                                    GFP_KERNEL);
7233         if (!pf->msix_entries)
7234                 return -ENOMEM;
7235
7236         for (i = 0; i < v_budget; i++)
7237                 pf->msix_entries[i].entry = i;
7238         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7239
7240         if (v_actual != v_budget) {
7241                 /* If we have limited resources, we will start with no vectors
7242                  * for the special features and then allocate vectors to some
7243                  * of these features based on the policy and at the end disable
7244                  * the features that did not get any vectors.
7245                  */
7246 #ifdef I40E_FCOE
7247                 pf->num_fcoe_qps = 0;
7248                 pf->num_fcoe_msix = 0;
7249 #endif
7250                 pf->num_vmdq_msix = 0;
7251         }
7252
7253         if (v_actual < I40E_MIN_MSIX) {
7254                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7255                 kfree(pf->msix_entries);
7256                 pf->msix_entries = NULL;
7257                 return -ENODEV;
7258
7259         } else if (v_actual == I40E_MIN_MSIX) {
7260                 /* Adjust for minimal MSIX use */
7261                 pf->num_vmdq_vsis = 0;
7262                 pf->num_vmdq_qps = 0;
7263                 pf->num_lan_qps = 1;
7264                 pf->num_lan_msix = 1;
7265
7266         } else if (v_actual != v_budget) {
7267                 int vec;
7268
7269                 /* reserve the misc vector */
7270                 vec = v_actual - 1;
7271
7272                 /* Scale vector usage down */
7273                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7274                 pf->num_vmdq_vsis = 1;
7275                 pf->num_vmdq_qps = 1;
7276                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7277
7278                 /* partition out the remaining vectors */
7279                 switch (vec) {
7280                 case 2:
7281                         pf->num_lan_msix = 1;
7282                         break;
7283                 case 3:
7284 #ifdef I40E_FCOE
7285                         /* give one vector to FCoE */
7286                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7287                                 pf->num_lan_msix = 1;
7288                                 pf->num_fcoe_msix = 1;
7289                         }
7290 #else
7291                         pf->num_lan_msix = 2;
7292 #endif
7293                         break;
7294                 default:
7295 #ifdef I40E_FCOE
7296                         /* give one vector to FCoE */
7297                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7298                                 pf->num_fcoe_msix = 1;
7299                                 vec--;
7300                         }
7301 #endif
7302                         /* give the rest to the PF */
7303                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7304                         break;
7305                 }
7306         }
7307
7308         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7309             (pf->num_vmdq_msix == 0)) {
7310                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7311                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7312         }
7313 #ifdef I40E_FCOE
7314
7315         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7316                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7317                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7318         }
7319 #endif
7320         return v_actual;
7321 }
7322
7323 /**
7324  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7325  * @vsi: the VSI being configured
7326  * @v_idx: index of the vector in the vsi struct
7327  *
7328  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7329  **/
7330 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7331 {
7332         struct i40e_q_vector *q_vector;
7333
7334         /* allocate q_vector */
7335         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7336         if (!q_vector)
7337                 return -ENOMEM;
7338
7339         q_vector->vsi = vsi;
7340         q_vector->v_idx = v_idx;
7341         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7342         if (vsi->netdev)
7343                 netif_napi_add(vsi->netdev, &q_vector->napi,
7344                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7345
7346         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7347         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7348
7349         /* tie q_vector and vsi together */
7350         vsi->q_vectors[v_idx] = q_vector;
7351
7352         return 0;
7353 }
7354
7355 /**
7356  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7357  * @vsi: the VSI being configured
7358  *
7359  * We allocate one q_vector per queue interrupt.  If allocation fails we
7360  * return -ENOMEM.
7361  **/
7362 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7363 {
7364         struct i40e_pf *pf = vsi->back;
7365         int v_idx, num_q_vectors;
7366         int err;
7367
7368         /* if not MSIX, give the one vector only to the LAN VSI */
7369         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7370                 num_q_vectors = vsi->num_q_vectors;
7371         else if (vsi == pf->vsi[pf->lan_vsi])
7372                 num_q_vectors = 1;
7373         else
7374                 return -EINVAL;
7375
7376         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7377                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7378                 if (err)
7379                         goto err_out;
7380         }
7381
7382         return 0;
7383
7384 err_out:
7385         while (v_idx--)
7386                 i40e_free_q_vector(vsi, v_idx);
7387
7388         return err;
7389 }
7390
7391 /**
7392  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7393  * @pf: board private structure to initialize
7394  **/
7395 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7396 {
7397         int vectors = 0;
7398         ssize_t size;
7399
7400         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7401                 vectors = i40e_init_msix(pf);
7402                 if (vectors < 0) {
7403                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7404 #ifdef I40E_FCOE
7405                                        I40E_FLAG_FCOE_ENABLED   |
7406 #endif
7407                                        I40E_FLAG_RSS_ENABLED    |
7408                                        I40E_FLAG_DCB_CAPABLE    |
7409                                        I40E_FLAG_SRIOV_ENABLED  |
7410                                        I40E_FLAG_FD_SB_ENABLED  |
7411                                        I40E_FLAG_FD_ATR_ENABLED |
7412                                        I40E_FLAG_VMDQ_ENABLED);
7413
7414                         /* rework the queue expectations without MSIX */
7415                         i40e_determine_queue_usage(pf);
7416                 }
7417         }
7418
7419         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7420             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7421                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7422                 vectors = pci_enable_msi(pf->pdev);
7423                 if (vectors < 0) {
7424                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7425                                  vectors);
7426                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7427                 }
7428                 vectors = 1;  /* one MSI or Legacy vector */
7429         }
7430
7431         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7432                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7433
7434         /* set up vector assignment tracking */
7435         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7436         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7437         if (!pf->irq_pile) {
7438                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7439                 return -ENOMEM;
7440         }
7441         pf->irq_pile->num_entries = vectors;
7442         pf->irq_pile->search_hint = 0;
7443
7444         /* track first vector for misc interrupts, ignore return */
7445         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7446
7447         return 0;
7448 }
7449
7450 /**
7451  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7452  * @pf: board private structure
7453  *
7454  * This sets up the handler for MSIX 0, which is used to manage the
7455  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7456  * when in MSI or Legacy interrupt mode.
7457  **/
7458 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7459 {
7460         struct i40e_hw *hw = &pf->hw;
7461         int err = 0;
7462
7463         /* Only request the irq if this is the first time through, and
7464          * not when we're rebuilding after a Reset
7465          */
7466         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7467                 err = request_irq(pf->msix_entries[0].vector,
7468                                   i40e_intr, 0, pf->int_name, pf);
7469                 if (err) {
7470                         dev_info(&pf->pdev->dev,
7471                                  "request_irq for %s failed: %d\n",
7472                                  pf->int_name, err);
7473                         return -EFAULT;
7474                 }
7475         }
7476
7477         i40e_enable_misc_int_causes(pf);
7478
7479         /* associate no queues to the misc vector */
7480         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7481         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7482
7483         i40e_flush(hw);
7484
7485         i40e_irq_dynamic_enable_icr0(pf);
7486
7487         return err;
7488 }
7489
7490 /**
7491  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7492  * @vsi: vsi structure
7493  * @seed: RSS hash seed
7494  **/
7495 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed)
7496 {
7497         struct i40e_aqc_get_set_rss_key_data rss_key;
7498         struct i40e_pf *pf = vsi->back;
7499         struct i40e_hw *hw = &pf->hw;
7500         bool pf_lut = false;
7501         u8 *rss_lut;
7502         int ret, i;
7503
7504         memset(&rss_key, 0, sizeof(rss_key));
7505         memcpy(&rss_key, seed, sizeof(rss_key));
7506
7507         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7508         if (!rss_lut)
7509                 return -ENOMEM;
7510
7511         /* Populate the LUT with max no. of queues in round robin fashion */
7512         for (i = 0; i < vsi->rss_table_size; i++)
7513                 rss_lut[i] = i % vsi->rss_size;
7514
7515         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7516         if (ret) {
7517                 dev_info(&pf->pdev->dev,
7518                          "Cannot set RSS key, err %s aq_err %s\n",
7519                          i40e_stat_str(&pf->hw, ret),
7520                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7521                 return ret;
7522         }
7523
7524         if (vsi->type == I40E_VSI_MAIN)
7525                 pf_lut = true;
7526
7527         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7528                                   vsi->rss_table_size);
7529         if (ret)
7530                 dev_info(&pf->pdev->dev,
7531                          "Cannot set RSS lut, err %s aq_err %s\n",
7532                          i40e_stat_str(&pf->hw, ret),
7533                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7534
7535         return ret;
7536 }
7537
7538 /**
7539  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7540  * @vsi: VSI structure
7541  **/
7542 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7543 {
7544         u8 seed[I40E_HKEY_ARRAY_SIZE];
7545         struct i40e_pf *pf = vsi->back;
7546
7547         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7548         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7549
7550         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7551                 return i40e_config_rss_aq(vsi, seed);
7552
7553         return 0;
7554 }
7555
7556 /**
7557  * i40e_config_rss_reg - Prepare for RSS if used
7558  * @pf: board private structure
7559  * @seed: RSS hash seed
7560  **/
7561 static int i40e_config_rss_reg(struct i40e_pf *pf, const u8 *seed)
7562 {
7563         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7564         struct i40e_hw *hw = &pf->hw;
7565         u32 *seed_dw = (u32 *)seed;
7566         u32 current_queue = 0;
7567         u32 lut = 0;
7568         int i, j;
7569
7570         /* Fill out hash function seed */
7571         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7572                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7573
7574         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++) {
7575                 lut = 0;
7576                 for (j = 0; j < 4; j++) {
7577                         if (current_queue == vsi->rss_size)
7578                                 current_queue = 0;
7579                         lut |= ((current_queue) << (8 * j));
7580                         current_queue++;
7581                 }
7582                 wr32(&pf->hw, I40E_PFQF_HLUT(i), lut);
7583         }
7584         i40e_flush(hw);
7585
7586         return 0;
7587 }
7588
7589 /**
7590  * i40e_config_rss - Prepare for RSS if used
7591  * @pf: board private structure
7592  **/
7593 static int i40e_config_rss(struct i40e_pf *pf)
7594 {
7595         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7596         u8 seed[I40E_HKEY_ARRAY_SIZE];
7597         struct i40e_hw *hw = &pf->hw;
7598         u32 reg_val;
7599         u64 hena;
7600
7601         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7602
7603         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7604         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7605                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7606         hena |= i40e_pf_get_default_rss_hena(pf);
7607
7608         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7609         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7610
7611         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7612
7613         /* Determine the RSS table size based on the hardware capabilities */
7614         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7615         reg_val = (pf->rss_table_size == 512) ?
7616                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
7617                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
7618         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7619
7620         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7621                 return i40e_config_rss_aq(pf->vsi[pf->lan_vsi], seed);
7622         else
7623                 return i40e_config_rss_reg(pf, seed);
7624 }
7625
7626 /**
7627  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7628  * @pf: board private structure
7629  * @queue_count: the requested queue count for rss.
7630  *
7631  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7632  * count which may be different from the requested queue count.
7633  **/
7634 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7635 {
7636         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7637         int new_rss_size;
7638
7639         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7640                 return 0;
7641
7642         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7643
7644         if (queue_count != vsi->num_queue_pairs) {
7645                 vsi->req_queue_pairs = queue_count;
7646                 i40e_prep_for_reset(pf);
7647
7648                 pf->rss_size = new_rss_size;
7649
7650                 i40e_reset_and_rebuild(pf, true);
7651                 i40e_config_rss(pf);
7652         }
7653         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7654         return pf->rss_size;
7655 }
7656
7657 /**
7658  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7659  * @pf: board private structure
7660  **/
7661 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7662 {
7663         i40e_status status;
7664         bool min_valid, max_valid;
7665         u32 max_bw, min_bw;
7666
7667         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7668                                            &min_valid, &max_valid);
7669
7670         if (!status) {
7671                 if (min_valid)
7672                         pf->npar_min_bw = min_bw;
7673                 if (max_valid)
7674                         pf->npar_max_bw = max_bw;
7675         }
7676
7677         return status;
7678 }
7679
7680 /**
7681  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7682  * @pf: board private structure
7683  **/
7684 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7685 {
7686         struct i40e_aqc_configure_partition_bw_data bw_data;
7687         i40e_status status;
7688
7689         /* Set the valid bit for this PF */
7690         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
7691         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7692         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7693
7694         /* Set the new bandwidths */
7695         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7696
7697         return status;
7698 }
7699
7700 /**
7701  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7702  * @pf: board private structure
7703  **/
7704 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7705 {
7706         /* Commit temporary BW setting to permanent NVM image */
7707         enum i40e_admin_queue_err last_aq_status;
7708         i40e_status ret;
7709         u16 nvm_word;
7710
7711         if (pf->hw.partition_id != 1) {
7712                 dev_info(&pf->pdev->dev,
7713                          "Commit BW only works on partition 1! This is partition %d",
7714                          pf->hw.partition_id);
7715                 ret = I40E_NOT_SUPPORTED;
7716                 goto bw_commit_out;
7717         }
7718
7719         /* Acquire NVM for read access */
7720         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7721         last_aq_status = pf->hw.aq.asq_last_status;
7722         if (ret) {
7723                 dev_info(&pf->pdev->dev,
7724                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
7725                          i40e_stat_str(&pf->hw, ret),
7726                          i40e_aq_str(&pf->hw, last_aq_status));
7727                 goto bw_commit_out;
7728         }
7729
7730         /* Read word 0x10 of NVM - SW compatibility word 1 */
7731         ret = i40e_aq_read_nvm(&pf->hw,
7732                                I40E_SR_NVM_CONTROL_WORD,
7733                                0x10, sizeof(nvm_word), &nvm_word,
7734                                false, NULL);
7735         /* Save off last admin queue command status before releasing
7736          * the NVM
7737          */
7738         last_aq_status = pf->hw.aq.asq_last_status;
7739         i40e_release_nvm(&pf->hw);
7740         if (ret) {
7741                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
7742                          i40e_stat_str(&pf->hw, ret),
7743                          i40e_aq_str(&pf->hw, last_aq_status));
7744                 goto bw_commit_out;
7745         }
7746
7747         /* Wait a bit for NVM release to complete */
7748         msleep(50);
7749
7750         /* Acquire NVM for write access */
7751         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7752         last_aq_status = pf->hw.aq.asq_last_status;
7753         if (ret) {
7754                 dev_info(&pf->pdev->dev,
7755                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
7756                          i40e_stat_str(&pf->hw, ret),
7757                          i40e_aq_str(&pf->hw, last_aq_status));
7758                 goto bw_commit_out;
7759         }
7760         /* Write it back out unchanged to initiate update NVM,
7761          * which will force a write of the shadow (alt) RAM to
7762          * the NVM - thus storing the bandwidth values permanently.
7763          */
7764         ret = i40e_aq_update_nvm(&pf->hw,
7765                                  I40E_SR_NVM_CONTROL_WORD,
7766                                  0x10, sizeof(nvm_word),
7767                                  &nvm_word, true, NULL);
7768         /* Save off last admin queue command status before releasing
7769          * the NVM
7770          */
7771         last_aq_status = pf->hw.aq.asq_last_status;
7772         i40e_release_nvm(&pf->hw);
7773         if (ret)
7774                 dev_info(&pf->pdev->dev,
7775                          "BW settings NOT SAVED, err %s aq_err %s\n",
7776                          i40e_stat_str(&pf->hw, ret),
7777                          i40e_aq_str(&pf->hw, last_aq_status));
7778 bw_commit_out:
7779
7780         return ret;
7781 }
7782
7783 /**
7784  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7785  * @pf: board private structure to initialize
7786  *
7787  * i40e_sw_init initializes the Adapter private data structure.
7788  * Fields are initialized based on PCI device information and
7789  * OS network device settings (MTU size).
7790  **/
7791 static int i40e_sw_init(struct i40e_pf *pf)
7792 {
7793         int err = 0;
7794         int size;
7795
7796         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7797                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7798         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7799         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7800                 if (I40E_DEBUG_USER & debug)
7801                         pf->hw.debug_mask = debug;
7802                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7803                                                 I40E_DEFAULT_MSG_ENABLE);
7804         }
7805
7806         /* Set default capability flags */
7807         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7808                     I40E_FLAG_MSI_ENABLED     |
7809                     I40E_FLAG_MSIX_ENABLED;
7810
7811         if (iommu_present(&pci_bus_type))
7812                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7813         else
7814                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7815
7816         /* Set default ITR */
7817         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7818         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7819
7820         /* Depending on PF configurations, it is possible that the RSS
7821          * maximum might end up larger than the available queues
7822          */
7823         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
7824         pf->rss_size = 1;
7825         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7826         pf->rss_size_max = min_t(int, pf->rss_size_max,
7827                                  pf->hw.func_caps.num_tx_qp);
7828         if (pf->hw.func_caps.rss) {
7829                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7830                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7831         }
7832
7833         /* MFP mode enabled */
7834         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
7835                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7836                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7837                 if (i40e_get_npar_bw_setting(pf))
7838                         dev_warn(&pf->pdev->dev,
7839                                  "Could not get NPAR bw settings\n");
7840                 else
7841                         dev_info(&pf->pdev->dev,
7842                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7843                                  pf->npar_min_bw, pf->npar_max_bw);
7844         }
7845
7846         /* FW/NVM is not yet fixed in this regard */
7847         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7848             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7849                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7850                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7851                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7852                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7853                 } else {
7854                         dev_info(&pf->pdev->dev,
7855                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7856                 }
7857                 pf->fdir_pf_filter_count =
7858                                  pf->hw.func_caps.fd_filters_guaranteed;
7859                 pf->hw.fdir_shared_filter_count =
7860                                  pf->hw.func_caps.fd_filters_best_effort;
7861         }
7862
7863         if (pf->hw.func_caps.vmdq) {
7864                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7865                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7866         }
7867
7868 #ifdef I40E_FCOE
7869         err = i40e_init_pf_fcoe(pf);
7870         if (err)
7871                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7872
7873 #endif /* I40E_FCOE */
7874 #ifdef CONFIG_PCI_IOV
7875         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7876                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7877                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7878                 pf->num_req_vfs = min_t(int,
7879                                         pf->hw.func_caps.num_vfs,
7880                                         I40E_MAX_VF_COUNT);
7881         }
7882 #endif /* CONFIG_PCI_IOV */
7883         if (pf->hw.mac.type == I40E_MAC_X722) {
7884                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
7885                              I40E_FLAG_128_QP_RSS_CAPABLE |
7886                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
7887                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
7888                              I40E_FLAG_WB_ON_ITR_CAPABLE |
7889                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
7890         }
7891         pf->eeprom_version = 0xDEAD;
7892         pf->lan_veb = I40E_NO_VEB;
7893         pf->lan_vsi = I40E_NO_VSI;
7894
7895         /* set up queue assignment tracking */
7896         size = sizeof(struct i40e_lump_tracking)
7897                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7898         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7899         if (!pf->qp_pile) {
7900                 err = -ENOMEM;
7901                 goto sw_init_done;
7902         }
7903         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7904         pf->qp_pile->search_hint = 0;
7905
7906         pf->tx_timeout_recovery_level = 1;
7907
7908         mutex_init(&pf->switch_mutex);
7909
7910         /* If NPAR is enabled nudge the Tx scheduler */
7911         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
7912                 i40e_set_npar_bw_setting(pf);
7913
7914 sw_init_done:
7915         return err;
7916 }
7917
7918 /**
7919  * i40e_set_ntuple - set the ntuple feature flag and take action
7920  * @pf: board private structure to initialize
7921  * @features: the feature set that the stack is suggesting
7922  *
7923  * returns a bool to indicate if reset needs to happen
7924  **/
7925 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7926 {
7927         bool need_reset = false;
7928
7929         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7930          * the state changed, we need to reset.
7931          */
7932         if (features & NETIF_F_NTUPLE) {
7933                 /* Enable filters and mark for reset */
7934                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7935                         need_reset = true;
7936                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7937         } else {
7938                 /* turn off filters, mark for reset and clear SW filter list */
7939                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7940                         need_reset = true;
7941                         i40e_fdir_filter_exit(pf);
7942                 }
7943                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7944                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7945                 /* reset fd counters */
7946                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7947                 pf->fdir_pf_active_filters = 0;
7948                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7949                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
7950                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7951                 /* if ATR was auto disabled it can be re-enabled. */
7952                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
7953                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
7954                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
7955         }
7956         return need_reset;
7957 }
7958
7959 /**
7960  * i40e_set_features - set the netdev feature flags
7961  * @netdev: ptr to the netdev being adjusted
7962  * @features: the feature set that the stack is suggesting
7963  **/
7964 static int i40e_set_features(struct net_device *netdev,
7965                              netdev_features_t features)
7966 {
7967         struct i40e_netdev_priv *np = netdev_priv(netdev);
7968         struct i40e_vsi *vsi = np->vsi;
7969         struct i40e_pf *pf = vsi->back;
7970         bool need_reset;
7971
7972         if (features & NETIF_F_HW_VLAN_CTAG_RX)
7973                 i40e_vlan_stripping_enable(vsi);
7974         else
7975                 i40e_vlan_stripping_disable(vsi);
7976
7977         need_reset = i40e_set_ntuple(pf, features);
7978
7979         if (need_reset)
7980                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
7981
7982         return 0;
7983 }
7984
7985 #ifdef CONFIG_I40E_VXLAN
7986 /**
7987  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
7988  * @pf: board private structure
7989  * @port: The UDP port to look up
7990  *
7991  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
7992  **/
7993 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
7994 {
7995         u8 i;
7996
7997         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7998                 if (pf->vxlan_ports[i] == port)
7999                         return i;
8000         }
8001
8002         return i;
8003 }
8004
8005 /**
8006  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8007  * @netdev: This physical port's netdev
8008  * @sa_family: Socket Family that VXLAN is notifying us about
8009  * @port: New UDP port number that VXLAN started listening to
8010  **/
8011 static void i40e_add_vxlan_port(struct net_device *netdev,
8012                                 sa_family_t sa_family, __be16 port)
8013 {
8014         struct i40e_netdev_priv *np = netdev_priv(netdev);
8015         struct i40e_vsi *vsi = np->vsi;
8016         struct i40e_pf *pf = vsi->back;
8017         u8 next_idx;
8018         u8 idx;
8019
8020         if (sa_family == AF_INET6)
8021                 return;
8022
8023         idx = i40e_get_vxlan_port_idx(pf, port);
8024
8025         /* Check if port already exists */
8026         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8027                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8028                             ntohs(port));
8029                 return;
8030         }
8031
8032         /* Now check if there is space to add the new port */
8033         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8034
8035         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8036                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8037                             ntohs(port));
8038                 return;
8039         }
8040
8041         /* New port: add it and mark its index in the bitmap */
8042         pf->vxlan_ports[next_idx] = port;
8043         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8044         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8045
8046         dev_info(&pf->pdev->dev, "adding vxlan port %d\n", ntohs(port));
8047 }
8048
8049 /**
8050  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8051  * @netdev: This physical port's netdev
8052  * @sa_family: Socket Family that VXLAN is notifying us about
8053  * @port: UDP port number that VXLAN stopped listening to
8054  **/
8055 static void i40e_del_vxlan_port(struct net_device *netdev,
8056                                 sa_family_t sa_family, __be16 port)
8057 {
8058         struct i40e_netdev_priv *np = netdev_priv(netdev);
8059         struct i40e_vsi *vsi = np->vsi;
8060         struct i40e_pf *pf = vsi->back;
8061         u8 idx;
8062
8063         if (sa_family == AF_INET6)
8064                 return;
8065
8066         idx = i40e_get_vxlan_port_idx(pf, port);
8067
8068         /* Check if port already exists */
8069         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8070                 /* if port exists, set it to 0 (mark for deletion)
8071                  * and make it pending
8072                  */
8073                 pf->vxlan_ports[idx] = 0;
8074                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8075                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8076
8077                 dev_info(&pf->pdev->dev, "deleting vxlan port %d\n",
8078                          ntohs(port));
8079         } else {
8080                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8081                             ntohs(port));
8082         }
8083 }
8084
8085 #endif
8086 static int i40e_get_phys_port_id(struct net_device *netdev,
8087                                  struct netdev_phys_item_id *ppid)
8088 {
8089         struct i40e_netdev_priv *np = netdev_priv(netdev);
8090         struct i40e_pf *pf = np->vsi->back;
8091         struct i40e_hw *hw = &pf->hw;
8092
8093         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8094                 return -EOPNOTSUPP;
8095
8096         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8097         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8098
8099         return 0;
8100 }
8101
8102 /**
8103  * i40e_ndo_fdb_add - add an entry to the hardware database
8104  * @ndm: the input from the stack
8105  * @tb: pointer to array of nladdr (unused)
8106  * @dev: the net device pointer
8107  * @addr: the MAC address entry being added
8108  * @flags: instructions from stack about fdb operation
8109  */
8110 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8111                             struct net_device *dev,
8112                             const unsigned char *addr, u16 vid,
8113                             u16 flags)
8114 {
8115         struct i40e_netdev_priv *np = netdev_priv(dev);
8116         struct i40e_pf *pf = np->vsi->back;
8117         int err = 0;
8118
8119         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8120                 return -EOPNOTSUPP;
8121
8122         if (vid) {
8123                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8124                 return -EINVAL;
8125         }
8126
8127         /* Hardware does not support aging addresses so if a
8128          * ndm_state is given only allow permanent addresses
8129          */
8130         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8131                 netdev_info(dev, "FDB only supports static addresses\n");
8132                 return -EINVAL;
8133         }
8134
8135         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8136                 err = dev_uc_add_excl(dev, addr);
8137         else if (is_multicast_ether_addr(addr))
8138                 err = dev_mc_add_excl(dev, addr);
8139         else
8140                 err = -EINVAL;
8141
8142         /* Only return duplicate errors if NLM_F_EXCL is set */
8143         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8144                 err = 0;
8145
8146         return err;
8147 }
8148
8149 /**
8150  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8151  * @dev: the netdev being configured
8152  * @nlh: RTNL message
8153  *
8154  * Inserts a new hardware bridge if not already created and
8155  * enables the bridging mode requested (VEB or VEPA). If the
8156  * hardware bridge has already been inserted and the request
8157  * is to change the mode then that requires a PF reset to
8158  * allow rebuild of the components with required hardware
8159  * bridge mode enabled.
8160  **/
8161 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8162                                    struct nlmsghdr *nlh,
8163                                    u16 flags)
8164 {
8165         struct i40e_netdev_priv *np = netdev_priv(dev);
8166         struct i40e_vsi *vsi = np->vsi;
8167         struct i40e_pf *pf = vsi->back;
8168         struct i40e_veb *veb = NULL;
8169         struct nlattr *attr, *br_spec;
8170         int i, rem;
8171
8172         /* Only for PF VSI for now */
8173         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8174                 return -EOPNOTSUPP;
8175
8176         /* Find the HW bridge for PF VSI */
8177         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8178                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8179                         veb = pf->veb[i];
8180         }
8181
8182         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8183
8184         nla_for_each_nested(attr, br_spec, rem) {
8185                 __u16 mode;
8186
8187                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8188                         continue;
8189
8190                 mode = nla_get_u16(attr);
8191                 if ((mode != BRIDGE_MODE_VEPA) &&
8192                     (mode != BRIDGE_MODE_VEB))
8193                         return -EINVAL;
8194
8195                 /* Insert a new HW bridge */
8196                 if (!veb) {
8197                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8198                                              vsi->tc_config.enabled_tc);
8199                         if (veb) {
8200                                 veb->bridge_mode = mode;
8201                                 i40e_config_bridge_mode(veb);
8202                         } else {
8203                                 /* No Bridge HW offload available */
8204                                 return -ENOENT;
8205                         }
8206                         break;
8207                 } else if (mode != veb->bridge_mode) {
8208                         /* Existing HW bridge but different mode needs reset */
8209                         veb->bridge_mode = mode;
8210                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8211                         if (mode == BRIDGE_MODE_VEB)
8212                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8213                         else
8214                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8215                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8216                         break;
8217                 }
8218         }
8219
8220         return 0;
8221 }
8222
8223 /**
8224  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8225  * @skb: skb buff
8226  * @pid: process id
8227  * @seq: RTNL message seq #
8228  * @dev: the netdev being configured
8229  * @filter_mask: unused
8230  *
8231  * Return the mode in which the hardware bridge is operating in
8232  * i.e VEB or VEPA.
8233  **/
8234 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8235                                    struct net_device *dev,
8236                                    u32 filter_mask, int nlflags)
8237 {
8238         struct i40e_netdev_priv *np = netdev_priv(dev);
8239         struct i40e_vsi *vsi = np->vsi;
8240         struct i40e_pf *pf = vsi->back;
8241         struct i40e_veb *veb = NULL;
8242         int i;
8243
8244         /* Only for PF VSI for now */
8245         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8246                 return -EOPNOTSUPP;
8247
8248         /* Find the HW bridge for the PF VSI */
8249         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8250                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8251                         veb = pf->veb[i];
8252         }
8253
8254         if (!veb)
8255                 return 0;
8256
8257         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8258                                        nlflags, 0, 0, filter_mask, NULL);
8259 }
8260
8261 #define I40E_MAX_TUNNEL_HDR_LEN 80
8262 /**
8263  * i40e_features_check - Validate encapsulated packet conforms to limits
8264  * @skb: skb buff
8265  * @netdev: This physical port's netdev
8266  * @features: Offload features that the stack believes apply
8267  **/
8268 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8269                                              struct net_device *dev,
8270                                              netdev_features_t features)
8271 {
8272         if (skb->encapsulation &&
8273             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8274              I40E_MAX_TUNNEL_HDR_LEN))
8275                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8276
8277         return features;
8278 }
8279
8280 static const struct net_device_ops i40e_netdev_ops = {
8281         .ndo_open               = i40e_open,
8282         .ndo_stop               = i40e_close,
8283         .ndo_start_xmit         = i40e_lan_xmit_frame,
8284         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8285         .ndo_set_rx_mode        = i40e_set_rx_mode,
8286         .ndo_validate_addr      = eth_validate_addr,
8287         .ndo_set_mac_address    = i40e_set_mac,
8288         .ndo_change_mtu         = i40e_change_mtu,
8289         .ndo_do_ioctl           = i40e_ioctl,
8290         .ndo_tx_timeout         = i40e_tx_timeout,
8291         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8292         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8293 #ifdef CONFIG_NET_POLL_CONTROLLER
8294         .ndo_poll_controller    = i40e_netpoll,
8295 #endif
8296         .ndo_setup_tc           = i40e_setup_tc,
8297 #ifdef I40E_FCOE
8298         .ndo_fcoe_enable        = i40e_fcoe_enable,
8299         .ndo_fcoe_disable       = i40e_fcoe_disable,
8300 #endif
8301         .ndo_set_features       = i40e_set_features,
8302         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8303         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8304         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8305         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8306         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8307         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8308 #ifdef CONFIG_I40E_VXLAN
8309         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8310         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8311 #endif
8312         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8313         .ndo_fdb_add            = i40e_ndo_fdb_add,
8314         .ndo_features_check     = i40e_features_check,
8315         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8316         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8317 };
8318
8319 /**
8320  * i40e_config_netdev - Setup the netdev flags
8321  * @vsi: the VSI being configured
8322  *
8323  * Returns 0 on success, negative value on failure
8324  **/
8325 static int i40e_config_netdev(struct i40e_vsi *vsi)
8326 {
8327         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8328         struct i40e_pf *pf = vsi->back;
8329         struct i40e_hw *hw = &pf->hw;
8330         struct i40e_netdev_priv *np;
8331         struct net_device *netdev;
8332         u8 mac_addr[ETH_ALEN];
8333         int etherdev_size;
8334
8335         etherdev_size = sizeof(struct i40e_netdev_priv);
8336         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8337         if (!netdev)
8338                 return -ENOMEM;
8339
8340         vsi->netdev = netdev;
8341         np = netdev_priv(netdev);
8342         np->vsi = vsi;
8343
8344         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8345                                   NETIF_F_GSO_UDP_TUNNEL |
8346                                   NETIF_F_TSO;
8347
8348         netdev->features = NETIF_F_SG                  |
8349                            NETIF_F_IP_CSUM             |
8350                            NETIF_F_SCTP_CSUM           |
8351                            NETIF_F_HIGHDMA             |
8352                            NETIF_F_GSO_UDP_TUNNEL      |
8353                            NETIF_F_HW_VLAN_CTAG_TX     |
8354                            NETIF_F_HW_VLAN_CTAG_RX     |
8355                            NETIF_F_HW_VLAN_CTAG_FILTER |
8356                            NETIF_F_IPV6_CSUM           |
8357                            NETIF_F_TSO                 |
8358                            NETIF_F_TSO_ECN             |
8359                            NETIF_F_TSO6                |
8360                            NETIF_F_RXCSUM              |
8361                            NETIF_F_RXHASH              |
8362                            0;
8363
8364         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8365                 netdev->features |= NETIF_F_NTUPLE;
8366
8367         /* copy netdev features into list of user selectable features */
8368         netdev->hw_features |= netdev->features;
8369
8370         if (vsi->type == I40E_VSI_MAIN) {
8371                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8372                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8373                 /* The following steps are necessary to prevent reception
8374                  * of tagged packets - some older NVM configurations load a
8375                  * default a MAC-VLAN filter that accepts any tagged packet
8376                  * which must be replaced by a normal filter.
8377                  */
8378                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
8379                         i40e_add_filter(vsi, mac_addr,
8380                                         I40E_VLAN_ANY, false, true);
8381         } else {
8382                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8383                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8384                          pf->vsi[pf->lan_vsi]->netdev->name);
8385                 random_ether_addr(mac_addr);
8386                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8387         }
8388         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8389
8390         ether_addr_copy(netdev->dev_addr, mac_addr);
8391         ether_addr_copy(netdev->perm_addr, mac_addr);
8392         /* vlan gets same features (except vlan offload)
8393          * after any tweaks for specific VSI types
8394          */
8395         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8396                                                      NETIF_F_HW_VLAN_CTAG_RX |
8397                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8398         netdev->priv_flags |= IFF_UNICAST_FLT;
8399         netdev->priv_flags |= IFF_SUPP_NOFCS;
8400         /* Setup netdev TC information */
8401         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8402
8403         netdev->netdev_ops = &i40e_netdev_ops;
8404         netdev->watchdog_timeo = 5 * HZ;
8405         i40e_set_ethtool_ops(netdev);
8406 #ifdef I40E_FCOE
8407         i40e_fcoe_config_netdev(netdev, vsi);
8408 #endif
8409
8410         return 0;
8411 }
8412
8413 /**
8414  * i40e_vsi_delete - Delete a VSI from the switch
8415  * @vsi: the VSI being removed
8416  *
8417  * Returns 0 on success, negative value on failure
8418  **/
8419 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8420 {
8421         /* remove default VSI is not allowed */
8422         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8423                 return;
8424
8425         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8426 }
8427
8428 /**
8429  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8430  * @vsi: the VSI being queried
8431  *
8432  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8433  **/
8434 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8435 {
8436         struct i40e_veb *veb;
8437         struct i40e_pf *pf = vsi->back;
8438
8439         /* Uplink is not a bridge so default to VEB */
8440         if (vsi->veb_idx == I40E_NO_VEB)
8441                 return 1;
8442
8443         veb = pf->veb[vsi->veb_idx];
8444         /* Uplink is a bridge in VEPA mode */
8445         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8446                 return 0;
8447
8448         /* Uplink is a bridge in VEB mode */
8449         return 1;
8450 }
8451
8452 /**
8453  * i40e_add_vsi - Add a VSI to the switch
8454  * @vsi: the VSI being configured
8455  *
8456  * This initializes a VSI context depending on the VSI type to be added and
8457  * passes it down to the add_vsi aq command.
8458  **/
8459 static int i40e_add_vsi(struct i40e_vsi *vsi)
8460 {
8461         int ret = -ENODEV;
8462         struct i40e_mac_filter *f, *ftmp;
8463         struct i40e_pf *pf = vsi->back;
8464         struct i40e_hw *hw = &pf->hw;
8465         struct i40e_vsi_context ctxt;
8466         u8 enabled_tc = 0x1; /* TC0 enabled */
8467         int f_count = 0;
8468
8469         memset(&ctxt, 0, sizeof(ctxt));
8470         switch (vsi->type) {
8471         case I40E_VSI_MAIN:
8472                 /* The PF's main VSI is already setup as part of the
8473                  * device initialization, so we'll not bother with
8474                  * the add_vsi call, but we will retrieve the current
8475                  * VSI context.
8476                  */
8477                 ctxt.seid = pf->main_vsi_seid;
8478                 ctxt.pf_num = pf->hw.pf_id;
8479                 ctxt.vf_num = 0;
8480                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8481                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8482                 if (ret) {
8483                         dev_info(&pf->pdev->dev,
8484                                  "couldn't get PF vsi config, err %s aq_err %s\n",
8485                                  i40e_stat_str(&pf->hw, ret),
8486                                  i40e_aq_str(&pf->hw,
8487                                              pf->hw.aq.asq_last_status));
8488                         return -ENOENT;
8489                 }
8490                 vsi->info = ctxt.info;
8491                 vsi->info.valid_sections = 0;
8492
8493                 vsi->seid = ctxt.seid;
8494                 vsi->id = ctxt.vsi_number;
8495
8496                 enabled_tc = i40e_pf_get_tc_map(pf);
8497
8498                 /* MFP mode setup queue map and update VSI */
8499                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8500                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8501                         memset(&ctxt, 0, sizeof(ctxt));
8502                         ctxt.seid = pf->main_vsi_seid;
8503                         ctxt.pf_num = pf->hw.pf_id;
8504                         ctxt.vf_num = 0;
8505                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8506                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8507                         if (ret) {
8508                                 dev_info(&pf->pdev->dev,
8509                                          "update vsi failed, err %s aq_err %s\n",
8510                                          i40e_stat_str(&pf->hw, ret),
8511                                          i40e_aq_str(&pf->hw,
8512                                                     pf->hw.aq.asq_last_status));
8513                                 ret = -ENOENT;
8514                                 goto err;
8515                         }
8516                         /* update the local VSI info queue map */
8517                         i40e_vsi_update_queue_map(vsi, &ctxt);
8518                         vsi->info.valid_sections = 0;
8519                 } else {
8520                         /* Default/Main VSI is only enabled for TC0
8521                          * reconfigure it to enable all TCs that are
8522                          * available on the port in SFP mode.
8523                          * For MFP case the iSCSI PF would use this
8524                          * flow to enable LAN+iSCSI TC.
8525                          */
8526                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8527                         if (ret) {
8528                                 dev_info(&pf->pdev->dev,
8529                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
8530                                          enabled_tc,
8531                                          i40e_stat_str(&pf->hw, ret),
8532                                          i40e_aq_str(&pf->hw,
8533                                                     pf->hw.aq.asq_last_status));
8534                                 ret = -ENOENT;
8535                         }
8536                 }
8537                 break;
8538
8539         case I40E_VSI_FDIR:
8540                 ctxt.pf_num = hw->pf_id;
8541                 ctxt.vf_num = 0;
8542                 ctxt.uplink_seid = vsi->uplink_seid;
8543                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8544                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8545                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
8546                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
8547                         ctxt.info.valid_sections |=
8548                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8549                         ctxt.info.switch_id =
8550                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8551                 }
8552                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8553                 break;
8554
8555         case I40E_VSI_VMDQ2:
8556                 ctxt.pf_num = hw->pf_id;
8557                 ctxt.vf_num = 0;
8558                 ctxt.uplink_seid = vsi->uplink_seid;
8559                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8560                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8561
8562                 /* This VSI is connected to VEB so the switch_id
8563                  * should be set to zero by default.
8564                  */
8565                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8566                         ctxt.info.valid_sections |=
8567                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8568                         ctxt.info.switch_id =
8569                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8570                 }
8571
8572                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8573                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8574                 break;
8575
8576         case I40E_VSI_SRIOV:
8577                 ctxt.pf_num = hw->pf_id;
8578                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8579                 ctxt.uplink_seid = vsi->uplink_seid;
8580                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8581                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8582
8583                 /* This VSI is connected to VEB so the switch_id
8584                  * should be set to zero by default.
8585                  */
8586                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8587                         ctxt.info.valid_sections |=
8588                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8589                         ctxt.info.switch_id =
8590                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8591                 }
8592
8593                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8594                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8595                 if (pf->vf[vsi->vf_id].spoofchk) {
8596                         ctxt.info.valid_sections |=
8597                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8598                         ctxt.info.sec_flags |=
8599                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8600                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8601                 }
8602                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8603                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8604                 break;
8605
8606 #ifdef I40E_FCOE
8607         case I40E_VSI_FCOE:
8608                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8609                 if (ret) {
8610                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8611                         return ret;
8612                 }
8613                 break;
8614
8615 #endif /* I40E_FCOE */
8616         default:
8617                 return -ENODEV;
8618         }
8619
8620         if (vsi->type != I40E_VSI_MAIN) {
8621                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8622                 if (ret) {
8623                         dev_info(&vsi->back->pdev->dev,
8624                                  "add vsi failed, err %s aq_err %s\n",
8625                                  i40e_stat_str(&pf->hw, ret),
8626                                  i40e_aq_str(&pf->hw,
8627                                              pf->hw.aq.asq_last_status));
8628                         ret = -ENOENT;
8629                         goto err;
8630                 }
8631                 vsi->info = ctxt.info;
8632                 vsi->info.valid_sections = 0;
8633                 vsi->seid = ctxt.seid;
8634                 vsi->id = ctxt.vsi_number;
8635         }
8636
8637         /* If macvlan filters already exist, force them to get loaded */
8638         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8639                 f->changed = true;
8640                 f_count++;
8641
8642                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8643                         struct i40e_aqc_remove_macvlan_element_data element;
8644
8645                         memset(&element, 0, sizeof(element));
8646                         ether_addr_copy(element.mac_addr, f->macaddr);
8647                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8648                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8649                                                      &element, 1, NULL);
8650                         if (ret) {
8651                                 /* some older FW has a different default */
8652                                 element.flags |=
8653                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8654                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8655                                                        &element, 1, NULL);
8656                         }
8657
8658                         i40e_aq_mac_address_write(hw,
8659                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8660                                                   f->macaddr, NULL);
8661                 }
8662         }
8663         if (f_count) {
8664                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8665                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8666         }
8667
8668         /* Update VSI BW information */
8669         ret = i40e_vsi_get_bw_info(vsi);
8670         if (ret) {
8671                 dev_info(&pf->pdev->dev,
8672                          "couldn't get vsi bw info, err %s aq_err %s\n",
8673                          i40e_stat_str(&pf->hw, ret),
8674                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8675                 /* VSI is already added so not tearing that up */
8676                 ret = 0;
8677         }
8678
8679 err:
8680         return ret;
8681 }
8682
8683 /**
8684  * i40e_vsi_release - Delete a VSI and free its resources
8685  * @vsi: the VSI being removed
8686  *
8687  * Returns 0 on success or < 0 on error
8688  **/
8689 int i40e_vsi_release(struct i40e_vsi *vsi)
8690 {
8691         struct i40e_mac_filter *f, *ftmp;
8692         struct i40e_veb *veb = NULL;
8693         struct i40e_pf *pf;
8694         u16 uplink_seid;
8695         int i, n;
8696
8697         pf = vsi->back;
8698
8699         /* release of a VEB-owner or last VSI is not allowed */
8700         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8701                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8702                          vsi->seid, vsi->uplink_seid);
8703                 return -ENODEV;
8704         }
8705         if (vsi == pf->vsi[pf->lan_vsi] &&
8706             !test_bit(__I40E_DOWN, &pf->state)) {
8707                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8708                 return -ENODEV;
8709         }
8710
8711         uplink_seid = vsi->uplink_seid;
8712         if (vsi->type != I40E_VSI_SRIOV) {
8713                 if (vsi->netdev_registered) {
8714                         vsi->netdev_registered = false;
8715                         if (vsi->netdev) {
8716                                 /* results in a call to i40e_close() */
8717                                 unregister_netdev(vsi->netdev);
8718                         }
8719                 } else {
8720                         i40e_vsi_close(vsi);
8721                 }
8722                 i40e_vsi_disable_irq(vsi);
8723         }
8724
8725         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8726                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8727                                 f->is_vf, f->is_netdev);
8728         i40e_sync_vsi_filters(vsi);
8729
8730         i40e_vsi_delete(vsi);
8731         i40e_vsi_free_q_vectors(vsi);
8732         if (vsi->netdev) {
8733                 free_netdev(vsi->netdev);
8734                 vsi->netdev = NULL;
8735         }
8736         i40e_vsi_clear_rings(vsi);
8737         i40e_vsi_clear(vsi);
8738
8739         /* If this was the last thing on the VEB, except for the
8740          * controlling VSI, remove the VEB, which puts the controlling
8741          * VSI onto the next level down in the switch.
8742          *
8743          * Well, okay, there's one more exception here: don't remove
8744          * the orphan VEBs yet.  We'll wait for an explicit remove request
8745          * from up the network stack.
8746          */
8747         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8748                 if (pf->vsi[i] &&
8749                     pf->vsi[i]->uplink_seid == uplink_seid &&
8750                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8751                         n++;      /* count the VSIs */
8752                 }
8753         }
8754         for (i = 0; i < I40E_MAX_VEB; i++) {
8755                 if (!pf->veb[i])
8756                         continue;
8757                 if (pf->veb[i]->uplink_seid == uplink_seid)
8758                         n++;     /* count the VEBs */
8759                 if (pf->veb[i]->seid == uplink_seid)
8760                         veb = pf->veb[i];
8761         }
8762         if (n == 0 && veb && veb->uplink_seid != 0)
8763                 i40e_veb_release(veb);
8764
8765         return 0;
8766 }
8767
8768 /**
8769  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8770  * @vsi: ptr to the VSI
8771  *
8772  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8773  * corresponding SW VSI structure and initializes num_queue_pairs for the
8774  * newly allocated VSI.
8775  *
8776  * Returns 0 on success or negative on failure
8777  **/
8778 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8779 {
8780         int ret = -ENOENT;
8781         struct i40e_pf *pf = vsi->back;
8782
8783         if (vsi->q_vectors[0]) {
8784                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8785                          vsi->seid);
8786                 return -EEXIST;
8787         }
8788
8789         if (vsi->base_vector) {
8790                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8791                          vsi->seid, vsi->base_vector);
8792                 return -EEXIST;
8793         }
8794
8795         ret = i40e_vsi_alloc_q_vectors(vsi);
8796         if (ret) {
8797                 dev_info(&pf->pdev->dev,
8798                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8799                          vsi->num_q_vectors, vsi->seid, ret);
8800                 vsi->num_q_vectors = 0;
8801                 goto vector_setup_out;
8802         }
8803
8804         /* In Legacy mode, we do not have to get any other vector since we
8805          * piggyback on the misc/ICR0 for queue interrupts.
8806         */
8807         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
8808                 return ret;
8809         if (vsi->num_q_vectors)
8810                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8811                                                  vsi->num_q_vectors, vsi->idx);
8812         if (vsi->base_vector < 0) {
8813                 dev_info(&pf->pdev->dev,
8814                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8815                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8816                 i40e_vsi_free_q_vectors(vsi);
8817                 ret = -ENOENT;
8818                 goto vector_setup_out;
8819         }
8820
8821 vector_setup_out:
8822         return ret;
8823 }
8824
8825 /**
8826  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8827  * @vsi: pointer to the vsi.
8828  *
8829  * This re-allocates a vsi's queue resources.
8830  *
8831  * Returns pointer to the successfully allocated and configured VSI sw struct
8832  * on success, otherwise returns NULL on failure.
8833  **/
8834 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8835 {
8836         struct i40e_pf *pf = vsi->back;
8837         u8 enabled_tc;
8838         int ret;
8839
8840         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8841         i40e_vsi_clear_rings(vsi);
8842
8843         i40e_vsi_free_arrays(vsi, false);
8844         i40e_set_num_rings_in_vsi(vsi);
8845         ret = i40e_vsi_alloc_arrays(vsi, false);
8846         if (ret)
8847                 goto err_vsi;
8848
8849         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8850         if (ret < 0) {
8851                 dev_info(&pf->pdev->dev,
8852                          "failed to get tracking for %d queues for VSI %d err %d\n",
8853                          vsi->alloc_queue_pairs, vsi->seid, ret);
8854                 goto err_vsi;
8855         }
8856         vsi->base_queue = ret;
8857
8858         /* Update the FW view of the VSI. Force a reset of TC and queue
8859          * layout configurations.
8860          */
8861         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8862         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8863         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8864         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8865
8866         /* assign it some queues */
8867         ret = i40e_alloc_rings(vsi);
8868         if (ret)
8869                 goto err_rings;
8870
8871         /* map all of the rings to the q_vectors */
8872         i40e_vsi_map_rings_to_vectors(vsi);
8873         return vsi;
8874
8875 err_rings:
8876         i40e_vsi_free_q_vectors(vsi);
8877         if (vsi->netdev_registered) {
8878                 vsi->netdev_registered = false;
8879                 unregister_netdev(vsi->netdev);
8880                 free_netdev(vsi->netdev);
8881                 vsi->netdev = NULL;
8882         }
8883         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8884 err_vsi:
8885         i40e_vsi_clear(vsi);
8886         return NULL;
8887 }
8888
8889 /**
8890  * i40e_vsi_setup - Set up a VSI by a given type
8891  * @pf: board private structure
8892  * @type: VSI type
8893  * @uplink_seid: the switch element to link to
8894  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8895  *
8896  * This allocates the sw VSI structure and its queue resources, then add a VSI
8897  * to the identified VEB.
8898  *
8899  * Returns pointer to the successfully allocated and configure VSI sw struct on
8900  * success, otherwise returns NULL on failure.
8901  **/
8902 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8903                                 u16 uplink_seid, u32 param1)
8904 {
8905         struct i40e_vsi *vsi = NULL;
8906         struct i40e_veb *veb = NULL;
8907         int ret, i;
8908         int v_idx;
8909
8910         /* The requested uplink_seid must be either
8911          *     - the PF's port seid
8912          *              no VEB is needed because this is the PF
8913          *              or this is a Flow Director special case VSI
8914          *     - seid of an existing VEB
8915          *     - seid of a VSI that owns an existing VEB
8916          *     - seid of a VSI that doesn't own a VEB
8917          *              a new VEB is created and the VSI becomes the owner
8918          *     - seid of the PF VSI, which is what creates the first VEB
8919          *              this is a special case of the previous
8920          *
8921          * Find which uplink_seid we were given and create a new VEB if needed
8922          */
8923         for (i = 0; i < I40E_MAX_VEB; i++) {
8924                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8925                         veb = pf->veb[i];
8926                         break;
8927                 }
8928         }
8929
8930         if (!veb && uplink_seid != pf->mac_seid) {
8931
8932                 for (i = 0; i < pf->num_alloc_vsi; i++) {
8933                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8934                                 vsi = pf->vsi[i];
8935                                 break;
8936                         }
8937                 }
8938                 if (!vsi) {
8939                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8940                                  uplink_seid);
8941                         return NULL;
8942                 }
8943
8944                 if (vsi->uplink_seid == pf->mac_seid)
8945                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8946                                              vsi->tc_config.enabled_tc);
8947                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8948                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8949                                              vsi->tc_config.enabled_tc);
8950                 if (veb) {
8951                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
8952                                 dev_info(&vsi->back->pdev->dev,
8953                                          "%s: New VSI creation error, uplink seid of LAN VSI expected.\n",
8954                                          __func__);
8955                                 return NULL;
8956                         }
8957                         /* We come up by default in VEPA mode if SRIOV is not
8958                          * already enabled, in which case we can't force VEPA
8959                          * mode.
8960                          */
8961                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
8962                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
8963                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8964                         }
8965                         i40e_config_bridge_mode(veb);
8966                 }
8967                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8968                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8969                                 veb = pf->veb[i];
8970                 }
8971                 if (!veb) {
8972                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
8973                         return NULL;
8974                 }
8975
8976                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8977                 uplink_seid = veb->seid;
8978         }
8979
8980         /* get vsi sw struct */
8981         v_idx = i40e_vsi_mem_alloc(pf, type);
8982         if (v_idx < 0)
8983                 goto err_alloc;
8984         vsi = pf->vsi[v_idx];
8985         if (!vsi)
8986                 goto err_alloc;
8987         vsi->type = type;
8988         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
8989
8990         if (type == I40E_VSI_MAIN)
8991                 pf->lan_vsi = v_idx;
8992         else if (type == I40E_VSI_SRIOV)
8993                 vsi->vf_id = param1;
8994         /* assign it some queues */
8995         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
8996                                 vsi->idx);
8997         if (ret < 0) {
8998                 dev_info(&pf->pdev->dev,
8999                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9000                          vsi->alloc_queue_pairs, vsi->seid, ret);
9001                 goto err_vsi;
9002         }
9003         vsi->base_queue = ret;
9004
9005         /* get a VSI from the hardware */
9006         vsi->uplink_seid = uplink_seid;
9007         ret = i40e_add_vsi(vsi);
9008         if (ret)
9009                 goto err_vsi;
9010
9011         switch (vsi->type) {
9012         /* setup the netdev if needed */
9013         case I40E_VSI_MAIN:
9014         case I40E_VSI_VMDQ2:
9015         case I40E_VSI_FCOE:
9016                 ret = i40e_config_netdev(vsi);
9017                 if (ret)
9018                         goto err_netdev;
9019                 ret = register_netdev(vsi->netdev);
9020                 if (ret)
9021                         goto err_netdev;
9022                 vsi->netdev_registered = true;
9023                 netif_carrier_off(vsi->netdev);
9024 #ifdef CONFIG_I40E_DCB
9025                 /* Setup DCB netlink interface */
9026                 i40e_dcbnl_setup(vsi);
9027 #endif /* CONFIG_I40E_DCB */
9028                 /* fall through */
9029
9030         case I40E_VSI_FDIR:
9031                 /* set up vectors and rings if needed */
9032                 ret = i40e_vsi_setup_vectors(vsi);
9033                 if (ret)
9034                         goto err_msix;
9035
9036                 ret = i40e_alloc_rings(vsi);
9037                 if (ret)
9038                         goto err_rings;
9039
9040                 /* map all of the rings to the q_vectors */
9041                 i40e_vsi_map_rings_to_vectors(vsi);
9042
9043                 i40e_vsi_reset_stats(vsi);
9044                 break;
9045
9046         default:
9047                 /* no netdev or rings for the other VSI types */
9048                 break;
9049         }
9050
9051         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9052             (vsi->type == I40E_VSI_VMDQ2)) {
9053                 ret = i40e_vsi_config_rss(vsi);
9054         }
9055         return vsi;
9056
9057 err_rings:
9058         i40e_vsi_free_q_vectors(vsi);
9059 err_msix:
9060         if (vsi->netdev_registered) {
9061                 vsi->netdev_registered = false;
9062                 unregister_netdev(vsi->netdev);
9063                 free_netdev(vsi->netdev);
9064                 vsi->netdev = NULL;
9065         }
9066 err_netdev:
9067         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9068 err_vsi:
9069         i40e_vsi_clear(vsi);
9070 err_alloc:
9071         return NULL;
9072 }
9073
9074 /**
9075  * i40e_veb_get_bw_info - Query VEB BW information
9076  * @veb: the veb to query
9077  *
9078  * Query the Tx scheduler BW configuration data for given VEB
9079  **/
9080 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9081 {
9082         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9083         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9084         struct i40e_pf *pf = veb->pf;
9085         struct i40e_hw *hw = &pf->hw;
9086         u32 tc_bw_max;
9087         int ret = 0;
9088         int i;
9089
9090         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9091                                                   &bw_data, NULL);
9092         if (ret) {
9093                 dev_info(&pf->pdev->dev,
9094                          "query veb bw config failed, err %s aq_err %s\n",
9095                          i40e_stat_str(&pf->hw, ret),
9096                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9097                 goto out;
9098         }
9099
9100         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9101                                                    &ets_data, NULL);
9102         if (ret) {
9103                 dev_info(&pf->pdev->dev,
9104                          "query veb bw ets config failed, err %s aq_err %s\n",
9105                          i40e_stat_str(&pf->hw, ret),
9106                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9107                 goto out;
9108         }
9109
9110         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9111         veb->bw_max_quanta = ets_data.tc_bw_max;
9112         veb->is_abs_credits = bw_data.absolute_credits_enable;
9113         veb->enabled_tc = ets_data.tc_valid_bits;
9114         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9115                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9116         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9117                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9118                 veb->bw_tc_limit_credits[i] =
9119                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9120                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9121         }
9122
9123 out:
9124         return ret;
9125 }
9126
9127 /**
9128  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9129  * @pf: board private structure
9130  *
9131  * On error: returns error code (negative)
9132  * On success: returns vsi index in PF (positive)
9133  **/
9134 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9135 {
9136         int ret = -ENOENT;
9137         struct i40e_veb *veb;
9138         int i;
9139
9140         /* Need to protect the allocation of switch elements at the PF level */
9141         mutex_lock(&pf->switch_mutex);
9142
9143         /* VEB list may be fragmented if VEB creation/destruction has
9144          * been happening.  We can afford to do a quick scan to look
9145          * for any free slots in the list.
9146          *
9147          * find next empty veb slot, looping back around if necessary
9148          */
9149         i = 0;
9150         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9151                 i++;
9152         if (i >= I40E_MAX_VEB) {
9153                 ret = -ENOMEM;
9154                 goto err_alloc_veb;  /* out of VEB slots! */
9155         }
9156
9157         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9158         if (!veb) {
9159                 ret = -ENOMEM;
9160                 goto err_alloc_veb;
9161         }
9162         veb->pf = pf;
9163         veb->idx = i;
9164         veb->enabled_tc = 1;
9165
9166         pf->veb[i] = veb;
9167         ret = i;
9168 err_alloc_veb:
9169         mutex_unlock(&pf->switch_mutex);
9170         return ret;
9171 }
9172
9173 /**
9174  * i40e_switch_branch_release - Delete a branch of the switch tree
9175  * @branch: where to start deleting
9176  *
9177  * This uses recursion to find the tips of the branch to be
9178  * removed, deleting until we get back to and can delete this VEB.
9179  **/
9180 static void i40e_switch_branch_release(struct i40e_veb *branch)
9181 {
9182         struct i40e_pf *pf = branch->pf;
9183         u16 branch_seid = branch->seid;
9184         u16 veb_idx = branch->idx;
9185         int i;
9186
9187         /* release any VEBs on this VEB - RECURSION */
9188         for (i = 0; i < I40E_MAX_VEB; i++) {
9189                 if (!pf->veb[i])
9190                         continue;
9191                 if (pf->veb[i]->uplink_seid == branch->seid)
9192                         i40e_switch_branch_release(pf->veb[i]);
9193         }
9194
9195         /* Release the VSIs on this VEB, but not the owner VSI.
9196          *
9197          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9198          *       the VEB itself, so don't use (*branch) after this loop.
9199          */
9200         for (i = 0; i < pf->num_alloc_vsi; i++) {
9201                 if (!pf->vsi[i])
9202                         continue;
9203                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9204                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9205                         i40e_vsi_release(pf->vsi[i]);
9206                 }
9207         }
9208
9209         /* There's one corner case where the VEB might not have been
9210          * removed, so double check it here and remove it if needed.
9211          * This case happens if the veb was created from the debugfs
9212          * commands and no VSIs were added to it.
9213          */
9214         if (pf->veb[veb_idx])
9215                 i40e_veb_release(pf->veb[veb_idx]);
9216 }
9217
9218 /**
9219  * i40e_veb_clear - remove veb struct
9220  * @veb: the veb to remove
9221  **/
9222 static void i40e_veb_clear(struct i40e_veb *veb)
9223 {
9224         if (!veb)
9225                 return;
9226
9227         if (veb->pf) {
9228                 struct i40e_pf *pf = veb->pf;
9229
9230                 mutex_lock(&pf->switch_mutex);
9231                 if (pf->veb[veb->idx] == veb)
9232                         pf->veb[veb->idx] = NULL;
9233                 mutex_unlock(&pf->switch_mutex);
9234         }
9235
9236         kfree(veb);
9237 }
9238
9239 /**
9240  * i40e_veb_release - Delete a VEB and free its resources
9241  * @veb: the VEB being removed
9242  **/
9243 void i40e_veb_release(struct i40e_veb *veb)
9244 {
9245         struct i40e_vsi *vsi = NULL;
9246         struct i40e_pf *pf;
9247         int i, n = 0;
9248
9249         pf = veb->pf;
9250
9251         /* find the remaining VSI and check for extras */
9252         for (i = 0; i < pf->num_alloc_vsi; i++) {
9253                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9254                         n++;
9255                         vsi = pf->vsi[i];
9256                 }
9257         }
9258         if (n != 1) {
9259                 dev_info(&pf->pdev->dev,
9260                          "can't remove VEB %d with %d VSIs left\n",
9261                          veb->seid, n);
9262                 return;
9263         }
9264
9265         /* move the remaining VSI to uplink veb */
9266         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9267         if (veb->uplink_seid) {
9268                 vsi->uplink_seid = veb->uplink_seid;
9269                 if (veb->uplink_seid == pf->mac_seid)
9270                         vsi->veb_idx = I40E_NO_VEB;
9271                 else
9272                         vsi->veb_idx = veb->veb_idx;
9273         } else {
9274                 /* floating VEB */
9275                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9276                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9277         }
9278
9279         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9280         i40e_veb_clear(veb);
9281 }
9282
9283 /**
9284  * i40e_add_veb - create the VEB in the switch
9285  * @veb: the VEB to be instantiated
9286  * @vsi: the controlling VSI
9287  **/
9288 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9289 {
9290         struct i40e_pf *pf = veb->pf;
9291         bool is_default = false;
9292         bool is_cloud = false;
9293         int ret;
9294
9295         /* get a VEB from the hardware */
9296         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9297                               veb->enabled_tc, is_default,
9298                               is_cloud, &veb->seid, NULL);
9299         if (ret) {
9300                 dev_info(&pf->pdev->dev,
9301                          "couldn't add VEB, err %s aq_err %s\n",
9302                          i40e_stat_str(&pf->hw, ret),
9303                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9304                 return -EPERM;
9305         }
9306
9307         /* get statistics counter */
9308         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9309                                          &veb->stats_idx, NULL, NULL, NULL);
9310         if (ret) {
9311                 dev_info(&pf->pdev->dev,
9312                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9313                          i40e_stat_str(&pf->hw, ret),
9314                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9315                 return -EPERM;
9316         }
9317         ret = i40e_veb_get_bw_info(veb);
9318         if (ret) {
9319                 dev_info(&pf->pdev->dev,
9320                          "couldn't get VEB bw info, err %s aq_err %s\n",
9321                          i40e_stat_str(&pf->hw, ret),
9322                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9323                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9324                 return -ENOENT;
9325         }
9326
9327         vsi->uplink_seid = veb->seid;
9328         vsi->veb_idx = veb->idx;
9329         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9330
9331         return 0;
9332 }
9333
9334 /**
9335  * i40e_veb_setup - Set up a VEB
9336  * @pf: board private structure
9337  * @flags: VEB setup flags
9338  * @uplink_seid: the switch element to link to
9339  * @vsi_seid: the initial VSI seid
9340  * @enabled_tc: Enabled TC bit-map
9341  *
9342  * This allocates the sw VEB structure and links it into the switch
9343  * It is possible and legal for this to be a duplicate of an already
9344  * existing VEB.  It is also possible for both uplink and vsi seids
9345  * to be zero, in order to create a floating VEB.
9346  *
9347  * Returns pointer to the successfully allocated VEB sw struct on
9348  * success, otherwise returns NULL on failure.
9349  **/
9350 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9351                                 u16 uplink_seid, u16 vsi_seid,
9352                                 u8 enabled_tc)
9353 {
9354         struct i40e_veb *veb, *uplink_veb = NULL;
9355         int vsi_idx, veb_idx;
9356         int ret;
9357
9358         /* if one seid is 0, the other must be 0 to create a floating relay */
9359         if ((uplink_seid == 0 || vsi_seid == 0) &&
9360             (uplink_seid + vsi_seid != 0)) {
9361                 dev_info(&pf->pdev->dev,
9362                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9363                          uplink_seid, vsi_seid);
9364                 return NULL;
9365         }
9366
9367         /* make sure there is such a vsi and uplink */
9368         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9369                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9370                         break;
9371         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9372                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9373                          vsi_seid);
9374                 return NULL;
9375         }
9376
9377         if (uplink_seid && uplink_seid != pf->mac_seid) {
9378                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9379                         if (pf->veb[veb_idx] &&
9380                             pf->veb[veb_idx]->seid == uplink_seid) {
9381                                 uplink_veb = pf->veb[veb_idx];
9382                                 break;
9383                         }
9384                 }
9385                 if (!uplink_veb) {
9386                         dev_info(&pf->pdev->dev,
9387                                  "uplink seid %d not found\n", uplink_seid);
9388                         return NULL;
9389                 }
9390         }
9391
9392         /* get veb sw struct */
9393         veb_idx = i40e_veb_mem_alloc(pf);
9394         if (veb_idx < 0)
9395                 goto err_alloc;
9396         veb = pf->veb[veb_idx];
9397         veb->flags = flags;
9398         veb->uplink_seid = uplink_seid;
9399         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9400         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9401
9402         /* create the VEB in the switch */
9403         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9404         if (ret)
9405                 goto err_veb;
9406         if (vsi_idx == pf->lan_vsi)
9407                 pf->lan_veb = veb->idx;
9408
9409         return veb;
9410
9411 err_veb:
9412         i40e_veb_clear(veb);
9413 err_alloc:
9414         return NULL;
9415 }
9416
9417 /**
9418  * i40e_setup_pf_switch_element - set PF vars based on switch type
9419  * @pf: board private structure
9420  * @ele: element we are building info from
9421  * @num_reported: total number of elements
9422  * @printconfig: should we print the contents
9423  *
9424  * helper function to assist in extracting a few useful SEID values.
9425  **/
9426 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9427                                 struct i40e_aqc_switch_config_element_resp *ele,
9428                                 u16 num_reported, bool printconfig)
9429 {
9430         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9431         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9432         u8 element_type = ele->element_type;
9433         u16 seid = le16_to_cpu(ele->seid);
9434
9435         if (printconfig)
9436                 dev_info(&pf->pdev->dev,
9437                          "type=%d seid=%d uplink=%d downlink=%d\n",
9438                          element_type, seid, uplink_seid, downlink_seid);
9439
9440         switch (element_type) {
9441         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9442                 pf->mac_seid = seid;
9443                 break;
9444         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9445                 /* Main VEB? */
9446                 if (uplink_seid != pf->mac_seid)
9447                         break;
9448                 if (pf->lan_veb == I40E_NO_VEB) {
9449                         int v;
9450
9451                         /* find existing or else empty VEB */
9452                         for (v = 0; v < I40E_MAX_VEB; v++) {
9453                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9454                                         pf->lan_veb = v;
9455                                         break;
9456                                 }
9457                         }
9458                         if (pf->lan_veb == I40E_NO_VEB) {
9459                                 v = i40e_veb_mem_alloc(pf);
9460                                 if (v < 0)
9461                                         break;
9462                                 pf->lan_veb = v;
9463                         }
9464                 }
9465
9466                 pf->veb[pf->lan_veb]->seid = seid;
9467                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9468                 pf->veb[pf->lan_veb]->pf = pf;
9469                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9470                 break;
9471         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9472                 if (num_reported != 1)
9473                         break;
9474                 /* This is immediately after a reset so we can assume this is
9475                  * the PF's VSI
9476                  */
9477                 pf->mac_seid = uplink_seid;
9478                 pf->pf_seid = downlink_seid;
9479                 pf->main_vsi_seid = seid;
9480                 if (printconfig)
9481                         dev_info(&pf->pdev->dev,
9482                                  "pf_seid=%d main_vsi_seid=%d\n",
9483                                  pf->pf_seid, pf->main_vsi_seid);
9484                 break;
9485         case I40E_SWITCH_ELEMENT_TYPE_PF:
9486         case I40E_SWITCH_ELEMENT_TYPE_VF:
9487         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9488         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9489         case I40E_SWITCH_ELEMENT_TYPE_PE:
9490         case I40E_SWITCH_ELEMENT_TYPE_PA:
9491                 /* ignore these for now */
9492                 break;
9493         default:
9494                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9495                          element_type, seid);
9496                 break;
9497         }
9498 }
9499
9500 /**
9501  * i40e_fetch_switch_configuration - Get switch config from firmware
9502  * @pf: board private structure
9503  * @printconfig: should we print the contents
9504  *
9505  * Get the current switch configuration from the device and
9506  * extract a few useful SEID values.
9507  **/
9508 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9509 {
9510         struct i40e_aqc_get_switch_config_resp *sw_config;
9511         u16 next_seid = 0;
9512         int ret = 0;
9513         u8 *aq_buf;
9514         int i;
9515
9516         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9517         if (!aq_buf)
9518                 return -ENOMEM;
9519
9520         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9521         do {
9522                 u16 num_reported, num_total;
9523
9524                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9525                                                 I40E_AQ_LARGE_BUF,
9526                                                 &next_seid, NULL);
9527                 if (ret) {
9528                         dev_info(&pf->pdev->dev,
9529                                  "get switch config failed err %s aq_err %s\n",
9530                                  i40e_stat_str(&pf->hw, ret),
9531                                  i40e_aq_str(&pf->hw,
9532                                              pf->hw.aq.asq_last_status));
9533                         kfree(aq_buf);
9534                         return -ENOENT;
9535                 }
9536
9537                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9538                 num_total = le16_to_cpu(sw_config->header.num_total);
9539
9540                 if (printconfig)
9541                         dev_info(&pf->pdev->dev,
9542                                  "header: %d reported %d total\n",
9543                                  num_reported, num_total);
9544
9545                 for (i = 0; i < num_reported; i++) {
9546                         struct i40e_aqc_switch_config_element_resp *ele =
9547                                 &sw_config->element[i];
9548
9549                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9550                                                      printconfig);
9551                 }
9552         } while (next_seid != 0);
9553
9554         kfree(aq_buf);
9555         return ret;
9556 }
9557
9558 /**
9559  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9560  * @pf: board private structure
9561  * @reinit: if the Main VSI needs to re-initialized.
9562  *
9563  * Returns 0 on success, negative value on failure
9564  **/
9565 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9566 {
9567         int ret;
9568
9569         /* find out what's out there already */
9570         ret = i40e_fetch_switch_configuration(pf, false);
9571         if (ret) {
9572                 dev_info(&pf->pdev->dev,
9573                          "couldn't fetch switch config, err %s aq_err %s\n",
9574                          i40e_stat_str(&pf->hw, ret),
9575                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9576                 return ret;
9577         }
9578         i40e_pf_reset_stats(pf);
9579
9580         /* first time setup */
9581         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9582                 struct i40e_vsi *vsi = NULL;
9583                 u16 uplink_seid;
9584
9585                 /* Set up the PF VSI associated with the PF's main VSI
9586                  * that is already in the HW switch
9587                  */
9588                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9589                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9590                 else
9591                         uplink_seid = pf->mac_seid;
9592                 if (pf->lan_vsi == I40E_NO_VSI)
9593                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9594                 else if (reinit)
9595                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9596                 if (!vsi) {
9597                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9598                         i40e_fdir_teardown(pf);
9599                         return -EAGAIN;
9600                 }
9601         } else {
9602                 /* force a reset of TC and queue layout configurations */
9603                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9604                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9605                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9606                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9607         }
9608         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9609
9610         i40e_fdir_sb_setup(pf);
9611
9612         /* Setup static PF queue filter control settings */
9613         ret = i40e_setup_pf_filter_control(pf);
9614         if (ret) {
9615                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9616                          ret);
9617                 /* Failure here should not stop continuing other steps */
9618         }
9619
9620         /* enable RSS in the HW, even for only one queue, as the stack can use
9621          * the hash
9622          */
9623         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9624                 i40e_config_rss(pf);
9625
9626         /* fill in link information and enable LSE reporting */
9627         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9628         i40e_link_event(pf);
9629
9630         /* Initialize user-specific link properties */
9631         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9632                                   I40E_AQ_AN_COMPLETED) ? true : false);
9633
9634         i40e_ptp_init(pf);
9635
9636         return ret;
9637 }
9638
9639 /**
9640  * i40e_determine_queue_usage - Work out queue distribution
9641  * @pf: board private structure
9642  **/
9643 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9644 {
9645         int queues_left;
9646
9647         pf->num_lan_qps = 0;
9648 #ifdef I40E_FCOE
9649         pf->num_fcoe_qps = 0;
9650 #endif
9651
9652         /* Find the max queues to be put into basic use.  We'll always be
9653          * using TC0, whether or not DCB is running, and TC0 will get the
9654          * big RSS set.
9655          */
9656         queues_left = pf->hw.func_caps.num_tx_qp;
9657
9658         if ((queues_left == 1) ||
9659             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9660                 /* one qp for PF, no queues for anything else */
9661                 queues_left = 0;
9662                 pf->rss_size = pf->num_lan_qps = 1;
9663
9664                 /* make sure all the fancies are disabled */
9665                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9666 #ifdef I40E_FCOE
9667                                I40E_FLAG_FCOE_ENABLED   |
9668 #endif
9669                                I40E_FLAG_FD_SB_ENABLED  |
9670                                I40E_FLAG_FD_ATR_ENABLED |
9671                                I40E_FLAG_DCB_CAPABLE    |
9672                                I40E_FLAG_SRIOV_ENABLED  |
9673                                I40E_FLAG_VMDQ_ENABLED);
9674         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
9675                                   I40E_FLAG_FD_SB_ENABLED |
9676                                   I40E_FLAG_FD_ATR_ENABLED |
9677                                   I40E_FLAG_DCB_CAPABLE))) {
9678                 /* one qp for PF */
9679                 pf->rss_size = pf->num_lan_qps = 1;
9680                 queues_left -= pf->num_lan_qps;
9681
9682                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9683 #ifdef I40E_FCOE
9684                                I40E_FLAG_FCOE_ENABLED   |
9685 #endif
9686                                I40E_FLAG_FD_SB_ENABLED  |
9687                                I40E_FLAG_FD_ATR_ENABLED |
9688                                I40E_FLAG_DCB_ENABLED    |
9689                                I40E_FLAG_VMDQ_ENABLED);
9690         } else {
9691                 /* Not enough queues for all TCs */
9692                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9693                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9694                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9695                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
9696                 }
9697                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
9698                                         num_online_cpus());
9699                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
9700                                         pf->hw.func_caps.num_tx_qp);
9701
9702                 queues_left -= pf->num_lan_qps;
9703         }
9704
9705 #ifdef I40E_FCOE
9706         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
9707                 if (I40E_DEFAULT_FCOE <= queues_left) {
9708                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
9709                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
9710                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
9711                 } else {
9712                         pf->num_fcoe_qps = 0;
9713                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
9714                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9715                 }
9716
9717                 queues_left -= pf->num_fcoe_qps;
9718         }
9719
9720 #endif
9721         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9722                 if (queues_left > 1) {
9723                         queues_left -= 1; /* save 1 queue for FD */
9724                 } else {
9725                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9726                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9727                 }
9728         }
9729
9730         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9731             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9732                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9733                                         (queues_left / pf->num_vf_qps));
9734                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9735         }
9736
9737         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9738             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9739                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9740                                           (queues_left / pf->num_vmdq_qps));
9741                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9742         }
9743
9744         pf->queues_left = queues_left;
9745 #ifdef I40E_FCOE
9746         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9747 #endif
9748 }
9749
9750 /**
9751  * i40e_setup_pf_filter_control - Setup PF static filter control
9752  * @pf: PF to be setup
9753  *
9754  * i40e_setup_pf_filter_control sets up a PF's initial filter control
9755  * settings. If PE/FCoE are enabled then it will also set the per PF
9756  * based filter sizes required for them. It also enables Flow director,
9757  * ethertype and macvlan type filter settings for the pf.
9758  *
9759  * Returns 0 on success, negative on failure
9760  **/
9761 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9762 {
9763         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9764
9765         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9766
9767         /* Flow Director is enabled */
9768         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9769                 settings->enable_fdir = true;
9770
9771         /* Ethtype and MACVLAN filters enabled for PF */
9772         settings->enable_ethtype = true;
9773         settings->enable_macvlan = true;
9774
9775         if (i40e_set_filter_control(&pf->hw, settings))
9776                 return -ENOENT;
9777
9778         return 0;
9779 }
9780
9781 #define INFO_STRING_LEN 255
9782 static void i40e_print_features(struct i40e_pf *pf)
9783 {
9784         struct i40e_hw *hw = &pf->hw;
9785         char *buf, *string;
9786
9787         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9788         if (!string) {
9789                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9790                 return;
9791         }
9792
9793         buf = string;
9794
9795         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9796 #ifdef CONFIG_PCI_IOV
9797         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9798 #endif
9799         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9800                        pf->hw.func_caps.num_vsis,
9801                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9802                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9803
9804         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9805                 buf += sprintf(buf, "RSS ");
9806         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9807                 buf += sprintf(buf, "FD_ATR ");
9808         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9809                 buf += sprintf(buf, "FD_SB ");
9810                 buf += sprintf(buf, "NTUPLE ");
9811         }
9812         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9813                 buf += sprintf(buf, "DCB ");
9814         if (pf->flags & I40E_FLAG_PTP)
9815                 buf += sprintf(buf, "PTP ");
9816 #ifdef I40E_FCOE
9817         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9818                 buf += sprintf(buf, "FCOE ");
9819 #endif
9820
9821         BUG_ON(buf > (string + INFO_STRING_LEN));
9822         dev_info(&pf->pdev->dev, "%s\n", string);
9823         kfree(string);
9824 }
9825
9826 /**
9827  * i40e_probe - Device initialization routine
9828  * @pdev: PCI device information struct
9829  * @ent: entry in i40e_pci_tbl
9830  *
9831  * i40e_probe initializes a PF identified by a pci_dev structure.
9832  * The OS initialization, configuring of the PF private structure,
9833  * and a hardware reset occur.
9834  *
9835  * Returns 0 on success, negative on failure
9836  **/
9837 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9838 {
9839         struct i40e_aq_get_phy_abilities_resp abilities;
9840         unsigned long ioremap_len;
9841         struct i40e_pf *pf;
9842         struct i40e_hw *hw;
9843         static u16 pfs_found;
9844         u16 link_status;
9845         int err = 0;
9846         u32 len;
9847         u32 i;
9848
9849         err = pci_enable_device_mem(pdev);
9850         if (err)
9851                 return err;
9852
9853         /* set up for high or low dma */
9854         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9855         if (err) {
9856                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9857                 if (err) {
9858                         dev_err(&pdev->dev,
9859                                 "DMA configuration failed: 0x%x\n", err);
9860                         goto err_dma;
9861                 }
9862         }
9863
9864         /* set up pci connections */
9865         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9866                                            IORESOURCE_MEM), i40e_driver_name);
9867         if (err) {
9868                 dev_info(&pdev->dev,
9869                          "pci_request_selected_regions failed %d\n", err);
9870                 goto err_pci_reg;
9871         }
9872
9873         pci_enable_pcie_error_reporting(pdev);
9874         pci_set_master(pdev);
9875
9876         /* Now that we have a PCI connection, we need to do the
9877          * low level device setup.  This is primarily setting up
9878          * the Admin Queue structures and then querying for the
9879          * device's current profile information.
9880          */
9881         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9882         if (!pf) {
9883                 err = -ENOMEM;
9884                 goto err_pf_alloc;
9885         }
9886         pf->next_vsi = 0;
9887         pf->pdev = pdev;
9888         set_bit(__I40E_DOWN, &pf->state);
9889
9890         hw = &pf->hw;
9891         hw->back = pf;
9892
9893         ioremap_len = min_t(unsigned long, pci_resource_len(pdev, 0),
9894                             I40E_MAX_CSR_SPACE);
9895
9896         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), ioremap_len);
9897         if (!hw->hw_addr) {
9898                 err = -EIO;
9899                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9900                          (unsigned int)pci_resource_start(pdev, 0),
9901                          (unsigned int)pci_resource_len(pdev, 0), err);
9902                 goto err_ioremap;
9903         }
9904         hw->vendor_id = pdev->vendor;
9905         hw->device_id = pdev->device;
9906         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
9907         hw->subsystem_vendor_id = pdev->subsystem_vendor;
9908         hw->subsystem_device_id = pdev->subsystem_device;
9909         hw->bus.device = PCI_SLOT(pdev->devfn);
9910         hw->bus.func = PCI_FUNC(pdev->devfn);
9911         pf->instance = pfs_found;
9912
9913         if (debug != -1) {
9914                 pf->msg_enable = pf->hw.debug_mask;
9915                 pf->msg_enable = debug;
9916         }
9917
9918         /* do a special CORER for clearing PXE mode once at init */
9919         if (hw->revision_id == 0 &&
9920             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
9921                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
9922                 i40e_flush(hw);
9923                 msleep(200);
9924                 pf->corer_count++;
9925
9926                 i40e_clear_pxe_mode(hw);
9927         }
9928
9929         /* Reset here to make sure all is clean and to define PF 'n' */
9930         i40e_clear_hw(hw);
9931         err = i40e_pf_reset(hw);
9932         if (err) {
9933                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
9934                 goto err_pf_reset;
9935         }
9936         pf->pfr_count++;
9937
9938         hw->aq.num_arq_entries = I40E_AQ_LEN;
9939         hw->aq.num_asq_entries = I40E_AQ_LEN;
9940         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9941         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9942         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
9943
9944         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
9945                  "%s-%s:misc",
9946                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
9947
9948         err = i40e_init_shared_code(hw);
9949         if (err) {
9950                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
9951                          err);
9952                 goto err_pf_reset;
9953         }
9954
9955         /* set up a default setting for link flow control */
9956         pf->hw.fc.requested_mode = I40E_FC_NONE;
9957
9958         err = i40e_init_adminq(hw);
9959         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
9960         if (err) {
9961                 dev_info(&pdev->dev,
9962                          "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");
9963                 goto err_pf_reset;
9964         }
9965
9966         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
9967             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
9968                 dev_info(&pdev->dev,
9969                          "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");
9970         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
9971                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
9972                 dev_info(&pdev->dev,
9973                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
9974
9975         i40e_verify_eeprom(pf);
9976
9977         /* Rev 0 hardware was never productized */
9978         if (hw->revision_id < 1)
9979                 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");
9980
9981         i40e_clear_pxe_mode(hw);
9982         err = i40e_get_capabilities(pf);
9983         if (err)
9984                 goto err_adminq_setup;
9985
9986         err = i40e_sw_init(pf);
9987         if (err) {
9988                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
9989                 goto err_sw_init;
9990         }
9991
9992         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
9993                                 hw->func_caps.num_rx_qp,
9994                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
9995         if (err) {
9996                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
9997                 goto err_init_lan_hmc;
9998         }
9999
10000         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10001         if (err) {
10002                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10003                 err = -ENOENT;
10004                 goto err_configure_lan_hmc;
10005         }
10006
10007         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10008          * Ignore error return codes because if it was already disabled via
10009          * hardware settings this will fail
10010          */
10011         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10012             (pf->hw.aq.fw_maj_ver < 4)) {
10013                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10014                 i40e_aq_stop_lldp(hw, true, NULL);
10015         }
10016
10017         i40e_get_mac_addr(hw, hw->mac.addr);
10018         if (!is_valid_ether_addr(hw->mac.addr)) {
10019                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10020                 err = -EIO;
10021                 goto err_mac_addr;
10022         }
10023         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10024         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10025         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10026         if (is_valid_ether_addr(hw->mac.port_addr))
10027                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10028 #ifdef I40E_FCOE
10029         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10030         if (err)
10031                 dev_info(&pdev->dev,
10032                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10033         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10034                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10035                          hw->mac.san_addr);
10036                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10037         }
10038         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10039 #endif /* I40E_FCOE */
10040
10041         pci_set_drvdata(pdev, pf);
10042         pci_save_state(pdev);
10043 #ifdef CONFIG_I40E_DCB
10044         err = i40e_init_pf_dcb(pf);
10045         if (err) {
10046                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10047                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10048                 /* Continue without DCB enabled */
10049         }
10050 #endif /* CONFIG_I40E_DCB */
10051
10052         /* set up periodic task facility */
10053         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10054         pf->service_timer_period = HZ;
10055
10056         INIT_WORK(&pf->service_task, i40e_service_task);
10057         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10058         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10059         pf->link_check_timeout = jiffies;
10060
10061         /* WoL defaults to disabled */
10062         pf->wol_en = false;
10063         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10064
10065         /* set up the main switch operations */
10066         i40e_determine_queue_usage(pf);
10067         err = i40e_init_interrupt_scheme(pf);
10068         if (err)
10069                 goto err_switch_setup;
10070
10071         /* The number of VSIs reported by the FW is the minimum guaranteed
10072          * to us; HW supports far more and we share the remaining pool with
10073          * the other PFs. We allocate space for more than the guarantee with
10074          * the understanding that we might not get them all later.
10075          */
10076         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10077                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10078         else
10079                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10080
10081         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10082         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10083         pf->vsi = kzalloc(len, GFP_KERNEL);
10084         if (!pf->vsi) {
10085                 err = -ENOMEM;
10086                 goto err_switch_setup;
10087         }
10088
10089 #ifdef CONFIG_PCI_IOV
10090         /* prep for VF support */
10091         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10092             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10093             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10094                 if (pci_num_vf(pdev))
10095                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10096         }
10097 #endif
10098         err = i40e_setup_pf_switch(pf, false);
10099         if (err) {
10100                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10101                 goto err_vsis;
10102         }
10103         /* if FDIR VSI was set up, start it now */
10104         for (i = 0; i < pf->num_alloc_vsi; i++) {
10105                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10106                         i40e_vsi_open(pf->vsi[i]);
10107                         break;
10108                 }
10109         }
10110
10111         /* driver is only interested in link up/down and module qualification
10112          * reports from firmware
10113          */
10114         err = i40e_aq_set_phy_int_mask(&pf->hw,
10115                                        I40E_AQ_EVENT_LINK_UPDOWN |
10116                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10117         if (err)
10118                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10119                          i40e_stat_str(&pf->hw, err),
10120                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10121
10122         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10123             (pf->hw.aq.fw_maj_ver < 4)) {
10124                 msleep(75);
10125                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10126                 if (err)
10127                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10128                                  i40e_stat_str(&pf->hw, err),
10129                                  i40e_aq_str(&pf->hw,
10130                                              pf->hw.aq.asq_last_status));
10131         }
10132         /* The main driver is (mostly) up and happy. We need to set this state
10133          * before setting up the misc vector or we get a race and the vector
10134          * ends up disabled forever.
10135          */
10136         clear_bit(__I40E_DOWN, &pf->state);
10137
10138         /* In case of MSIX we are going to setup the misc vector right here
10139          * to handle admin queue events etc. In case of legacy and MSI
10140          * the misc functionality and queue processing is combined in
10141          * the same vector and that gets setup at open.
10142          */
10143         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10144                 err = i40e_setup_misc_vector(pf);
10145                 if (err) {
10146                         dev_info(&pdev->dev,
10147                                  "setup of misc vector failed: %d\n", err);
10148                         goto err_vsis;
10149                 }
10150         }
10151
10152 #ifdef CONFIG_PCI_IOV
10153         /* prep for VF support */
10154         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10155             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10156             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10157                 u32 val;
10158
10159                 /* disable link interrupts for VFs */
10160                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10161                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10162                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10163                 i40e_flush(hw);
10164
10165                 if (pci_num_vf(pdev)) {
10166                         dev_info(&pdev->dev,
10167                                  "Active VFs found, allocating resources.\n");
10168                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10169                         if (err)
10170                                 dev_info(&pdev->dev,
10171                                          "Error %d allocating resources for existing VFs\n",
10172                                          err);
10173                 }
10174         }
10175 #endif /* CONFIG_PCI_IOV */
10176
10177         pfs_found++;
10178
10179         i40e_dbg_pf_init(pf);
10180
10181         /* tell the firmware that we're starting */
10182         i40e_send_version(pf);
10183
10184         /* since everything's happy, start the service_task timer */
10185         mod_timer(&pf->service_timer,
10186                   round_jiffies(jiffies + pf->service_timer_period));
10187
10188 #ifdef I40E_FCOE
10189         /* create FCoE interface */
10190         i40e_fcoe_vsi_setup(pf);
10191
10192 #endif
10193         /* Get the negotiated link width and speed from PCI config space */
10194         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
10195
10196         i40e_set_pci_config_data(hw, link_status);
10197
10198         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
10199                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
10200                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
10201                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
10202                  "Unknown"),
10203                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
10204                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
10205                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
10206                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
10207                  "Unknown"));
10208
10209         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10210             hw->bus.speed < i40e_bus_speed_8000) {
10211                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10212                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10213         }
10214
10215         /* get the requested speeds from the fw */
10216         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10217         if (err)
10218                 dev_info(&pf->pdev->dev,
10219                          "get phy capabilities failed, err %s aq_err %s, advertised speed settings may not be correct\n",
10220                          i40e_stat_str(&pf->hw, err),
10221                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10222         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10223
10224         /* print a string summarizing features */
10225         i40e_print_features(pf);
10226
10227         return 0;
10228
10229         /* Unwind what we've done if something failed in the setup */
10230 err_vsis:
10231         set_bit(__I40E_DOWN, &pf->state);
10232         i40e_clear_interrupt_scheme(pf);
10233         kfree(pf->vsi);
10234 err_switch_setup:
10235         i40e_reset_interrupt_capability(pf);
10236         del_timer_sync(&pf->service_timer);
10237 err_mac_addr:
10238 err_configure_lan_hmc:
10239         (void)i40e_shutdown_lan_hmc(hw);
10240 err_init_lan_hmc:
10241         kfree(pf->qp_pile);
10242 err_sw_init:
10243 err_adminq_setup:
10244         (void)i40e_shutdown_adminq(hw);
10245 err_pf_reset:
10246         iounmap(hw->hw_addr);
10247 err_ioremap:
10248         kfree(pf);
10249 err_pf_alloc:
10250         pci_disable_pcie_error_reporting(pdev);
10251         pci_release_selected_regions(pdev,
10252                                      pci_select_bars(pdev, IORESOURCE_MEM));
10253 err_pci_reg:
10254 err_dma:
10255         pci_disable_device(pdev);
10256         return err;
10257 }
10258
10259 /**
10260  * i40e_remove - Device removal routine
10261  * @pdev: PCI device information struct
10262  *
10263  * i40e_remove is called by the PCI subsystem to alert the driver
10264  * that is should release a PCI device.  This could be caused by a
10265  * Hot-Plug event, or because the driver is going to be removed from
10266  * memory.
10267  **/
10268 static void i40e_remove(struct pci_dev *pdev)
10269 {
10270         struct i40e_pf *pf = pci_get_drvdata(pdev);
10271         i40e_status ret_code;
10272         int i;
10273
10274         i40e_dbg_pf_exit(pf);
10275
10276         i40e_ptp_stop(pf);
10277
10278         /* no more scheduling of any task */
10279         set_bit(__I40E_DOWN, &pf->state);
10280         del_timer_sync(&pf->service_timer);
10281         cancel_work_sync(&pf->service_task);
10282         i40e_fdir_teardown(pf);
10283
10284         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10285                 i40e_free_vfs(pf);
10286                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10287         }
10288
10289         i40e_fdir_teardown(pf);
10290
10291         /* If there is a switch structure or any orphans, remove them.
10292          * This will leave only the PF's VSI remaining.
10293          */
10294         for (i = 0; i < I40E_MAX_VEB; i++) {
10295                 if (!pf->veb[i])
10296                         continue;
10297
10298                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10299                     pf->veb[i]->uplink_seid == 0)
10300                         i40e_switch_branch_release(pf->veb[i]);
10301         }
10302
10303         /* Now we can shutdown the PF's VSI, just before we kill
10304          * adminq and hmc.
10305          */
10306         if (pf->vsi[pf->lan_vsi])
10307                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10308
10309         /* shutdown and destroy the HMC */
10310         if (pf->hw.hmc.hmc_obj) {
10311                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10312                 if (ret_code)
10313                         dev_warn(&pdev->dev,
10314                                  "Failed to destroy the HMC resources: %d\n",
10315                                  ret_code);
10316         }
10317
10318         /* shutdown the adminq */
10319         ret_code = i40e_shutdown_adminq(&pf->hw);
10320         if (ret_code)
10321                 dev_warn(&pdev->dev,
10322                          "Failed to destroy the Admin Queue resources: %d\n",
10323                          ret_code);
10324
10325         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10326         i40e_clear_interrupt_scheme(pf);
10327         for (i = 0; i < pf->num_alloc_vsi; i++) {
10328                 if (pf->vsi[i]) {
10329                         i40e_vsi_clear_rings(pf->vsi[i]);
10330                         i40e_vsi_clear(pf->vsi[i]);
10331                         pf->vsi[i] = NULL;
10332                 }
10333         }
10334
10335         for (i = 0; i < I40E_MAX_VEB; i++) {
10336                 kfree(pf->veb[i]);
10337                 pf->veb[i] = NULL;
10338         }
10339
10340         kfree(pf->qp_pile);
10341         kfree(pf->vsi);
10342
10343         iounmap(pf->hw.hw_addr);
10344         kfree(pf);
10345         pci_release_selected_regions(pdev,
10346                                      pci_select_bars(pdev, IORESOURCE_MEM));
10347
10348         pci_disable_pcie_error_reporting(pdev);
10349         pci_disable_device(pdev);
10350 }
10351
10352 /**
10353  * i40e_pci_error_detected - warning that something funky happened in PCI land
10354  * @pdev: PCI device information struct
10355  *
10356  * Called to warn that something happened and the error handling steps
10357  * are in progress.  Allows the driver to quiesce things, be ready for
10358  * remediation.
10359  **/
10360 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10361                                                 enum pci_channel_state error)
10362 {
10363         struct i40e_pf *pf = pci_get_drvdata(pdev);
10364
10365         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10366
10367         /* shutdown all operations */
10368         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10369                 rtnl_lock();
10370                 i40e_prep_for_reset(pf);
10371                 rtnl_unlock();
10372         }
10373
10374         /* Request a slot reset */
10375         return PCI_ERS_RESULT_NEED_RESET;
10376 }
10377
10378 /**
10379  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10380  * @pdev: PCI device information struct
10381  *
10382  * Called to find if the driver can work with the device now that
10383  * the pci slot has been reset.  If a basic connection seems good
10384  * (registers are readable and have sane content) then return a
10385  * happy little PCI_ERS_RESULT_xxx.
10386  **/
10387 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10388 {
10389         struct i40e_pf *pf = pci_get_drvdata(pdev);
10390         pci_ers_result_t result;
10391         int err;
10392         u32 reg;
10393
10394         dev_info(&pdev->dev, "%s\n", __func__);
10395         if (pci_enable_device_mem(pdev)) {
10396                 dev_info(&pdev->dev,
10397                          "Cannot re-enable PCI device after reset.\n");
10398                 result = PCI_ERS_RESULT_DISCONNECT;
10399         } else {
10400                 pci_set_master(pdev);
10401                 pci_restore_state(pdev);
10402                 pci_save_state(pdev);
10403                 pci_wake_from_d3(pdev, false);
10404
10405                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10406                 if (reg == 0)
10407                         result = PCI_ERS_RESULT_RECOVERED;
10408                 else
10409                         result = PCI_ERS_RESULT_DISCONNECT;
10410         }
10411
10412         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10413         if (err) {
10414                 dev_info(&pdev->dev,
10415                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10416                          err);
10417                 /* non-fatal, continue */
10418         }
10419
10420         return result;
10421 }
10422
10423 /**
10424  * i40e_pci_error_resume - restart operations after PCI error recovery
10425  * @pdev: PCI device information struct
10426  *
10427  * Called to allow the driver to bring things back up after PCI error
10428  * and/or reset recovery has finished.
10429  **/
10430 static void i40e_pci_error_resume(struct pci_dev *pdev)
10431 {
10432         struct i40e_pf *pf = pci_get_drvdata(pdev);
10433
10434         dev_info(&pdev->dev, "%s\n", __func__);
10435         if (test_bit(__I40E_SUSPENDED, &pf->state))
10436                 return;
10437
10438         rtnl_lock();
10439         i40e_handle_reset_warning(pf);
10440         rtnl_lock();
10441 }
10442
10443 /**
10444  * i40e_shutdown - PCI callback for shutting down
10445  * @pdev: PCI device information struct
10446  **/
10447 static void i40e_shutdown(struct pci_dev *pdev)
10448 {
10449         struct i40e_pf *pf = pci_get_drvdata(pdev);
10450         struct i40e_hw *hw = &pf->hw;
10451
10452         set_bit(__I40E_SUSPENDED, &pf->state);
10453         set_bit(__I40E_DOWN, &pf->state);
10454         rtnl_lock();
10455         i40e_prep_for_reset(pf);
10456         rtnl_unlock();
10457
10458         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10459         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10460
10461         del_timer_sync(&pf->service_timer);
10462         cancel_work_sync(&pf->service_task);
10463         i40e_fdir_teardown(pf);
10464
10465         rtnl_lock();
10466         i40e_prep_for_reset(pf);
10467         rtnl_unlock();
10468
10469         wr32(hw, I40E_PFPM_APM,
10470              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10471         wr32(hw, I40E_PFPM_WUFC,
10472              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10473
10474         i40e_clear_interrupt_scheme(pf);
10475
10476         if (system_state == SYSTEM_POWER_OFF) {
10477                 pci_wake_from_d3(pdev, pf->wol_en);
10478                 pci_set_power_state(pdev, PCI_D3hot);
10479         }
10480 }
10481
10482 #ifdef CONFIG_PM
10483 /**
10484  * i40e_suspend - PCI callback for moving to D3
10485  * @pdev: PCI device information struct
10486  **/
10487 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10488 {
10489         struct i40e_pf *pf = pci_get_drvdata(pdev);
10490         struct i40e_hw *hw = &pf->hw;
10491
10492         set_bit(__I40E_SUSPENDED, &pf->state);
10493         set_bit(__I40E_DOWN, &pf->state);
10494
10495         rtnl_lock();
10496         i40e_prep_for_reset(pf);
10497         rtnl_unlock();
10498
10499         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10500         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10501
10502         pci_wake_from_d3(pdev, pf->wol_en);
10503         pci_set_power_state(pdev, PCI_D3hot);
10504
10505         return 0;
10506 }
10507
10508 /**
10509  * i40e_resume - PCI callback for waking up from D3
10510  * @pdev: PCI device information struct
10511  **/
10512 static int i40e_resume(struct pci_dev *pdev)
10513 {
10514         struct i40e_pf *pf = pci_get_drvdata(pdev);
10515         u32 err;
10516
10517         pci_set_power_state(pdev, PCI_D0);
10518         pci_restore_state(pdev);
10519         /* pci_restore_state() clears dev->state_saves, so
10520          * call pci_save_state() again to restore it.
10521          */
10522         pci_save_state(pdev);
10523
10524         err = pci_enable_device_mem(pdev);
10525         if (err) {
10526                 dev_err(&pdev->dev,
10527                         "%s: Cannot enable PCI device from suspend\n",
10528                         __func__);
10529                 return err;
10530         }
10531         pci_set_master(pdev);
10532
10533         /* no wakeup events while running */
10534         pci_wake_from_d3(pdev, false);
10535
10536         /* handling the reset will rebuild the device state */
10537         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10538                 clear_bit(__I40E_DOWN, &pf->state);
10539                 rtnl_lock();
10540                 i40e_reset_and_rebuild(pf, false);
10541                 rtnl_unlock();
10542         }
10543
10544         return 0;
10545 }
10546
10547 #endif
10548 static const struct pci_error_handlers i40e_err_handler = {
10549         .error_detected = i40e_pci_error_detected,
10550         .slot_reset = i40e_pci_error_slot_reset,
10551         .resume = i40e_pci_error_resume,
10552 };
10553
10554 static struct pci_driver i40e_driver = {
10555         .name     = i40e_driver_name,
10556         .id_table = i40e_pci_tbl,
10557         .probe    = i40e_probe,
10558         .remove   = i40e_remove,
10559 #ifdef CONFIG_PM
10560         .suspend  = i40e_suspend,
10561         .resume   = i40e_resume,
10562 #endif
10563         .shutdown = i40e_shutdown,
10564         .err_handler = &i40e_err_handler,
10565         .sriov_configure = i40e_pci_sriov_configure,
10566 };
10567
10568 /**
10569  * i40e_init_module - Driver registration routine
10570  *
10571  * i40e_init_module is the first routine called when the driver is
10572  * loaded. All it does is register with the PCI subsystem.
10573  **/
10574 static int __init i40e_init_module(void)
10575 {
10576         pr_info("%s: %s - version %s\n", i40e_driver_name,
10577                 i40e_driver_string, i40e_driver_version_str);
10578         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10579
10580         i40e_dbg_init();
10581         return pci_register_driver(&i40e_driver);
10582 }
10583 module_init(i40e_init_module);
10584
10585 /**
10586  * i40e_exit_module - Driver exit cleanup routine
10587  *
10588  * i40e_exit_module is called just before the driver is removed
10589  * from memory.
10590  **/
10591 static void __exit i40e_exit_module(void)
10592 {
10593         pci_unregister_driver(&i40e_driver);
10594         i40e_dbg_exit();
10595 }
10596 module_exit(i40e_exit_module);