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 4
  42 #define DRV_VERSION_BUILD 4
  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_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
  59                               u16 rss_table_size, u16 rss_size);
  60 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  61 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  62
  63 /* i40e_pci_tbl - PCI Device ID Table
  64  *
  65  * Last entry must be all 0s
  66  *
  67  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  68  *   Class, Class Mask, private data (not used) }
  69  */
  70 static const struct pci_device_id i40e_pci_tbl[] = {
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  87         /* required last entry */
  88         {0, }
  89 };
  90 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  91
  92 #define I40E_MAX_VF_COUNT 128
  93 static int debug = -1;
  94 module_param(debug, int, 0);
  95 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  96
  97 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  98 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  99 MODULE_LICENSE("GPL");
 100 MODULE_VERSION(DRV_VERSION);
 101
 102 /**
 103  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 104  * @hw:   pointer to the HW structure
 105  * @mem:  ptr to mem struct to fill out
 106  * @size: size of memory requested
 107  * @alignment: what to align the allocation to
 108  **/
 109 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 110                             u64 size, u32 alignment)
 111 {
 112         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 113
 114         mem->size = ALIGN(size, alignment);
 115         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 116                                       &mem->pa, GFP_KERNEL);
 117         if (!mem->va)
 118                 return -ENOMEM;
 119
 120         return 0;
 121 }
 122
 123 /**
 124  * i40e_free_dma_mem_d - OS specific memory free for shared code
 125  * @hw:   pointer to the HW structure
 126  * @mem:  ptr to mem struct to free
 127  **/
 128 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 129 {
 130         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 131
 132         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 133         mem->va = NULL;
 134         mem->pa = 0;
 135         mem->size = 0;
 136
 137         return 0;
 138 }
 139
 140 /**
 141  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 142  * @hw:   pointer to the HW structure
 143  * @mem:  ptr to mem struct to fill out
 144  * @size: size of memory requested
 145  **/
 146 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 147                              u32 size)
 148 {
 149         mem->size = size;
 150         mem->va = kzalloc(size, GFP_KERNEL);
 151
 152         if (!mem->va)
 153                 return -ENOMEM;
 154
 155         return 0;
 156 }
 157
 158 /**
 159  * i40e_free_virt_mem_d - OS specific memory free for shared code
 160  * @hw:   pointer to the HW structure
 161  * @mem:  ptr to mem struct to free
 162  **/
 163 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 164 {
 165         /* it's ok to kfree a NULL pointer */
 166         kfree(mem->va);
 167         mem->va = NULL;
 168         mem->size = 0;
 169
 170         return 0;
 171 }
 172
 173 /**
 174  * i40e_get_lump - find a lump of free generic resource
 175  * @pf: board private structure
 176  * @pile: the pile of resource to search
 177  * @needed: the number of items needed
 178  * @id: an owner id to stick on the items assigned
 179  *
 180  * Returns the base item index of the lump, or negative for error
 181  *
 182  * The search_hint trick and lack of advanced fit-finding only work
 183  * because we're highly likely to have all the same size lump requests.
 184  * Linear search time and any fragmentation should be minimal.
 185  **/
 186 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 187                          u16 needed, u16 id)
 188 {
 189         int ret = -ENOMEM;
 190         int i, j;
 191
 192         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 193                 dev_info(&pf->pdev->dev,
 194                          "param err: pile=%p needed=%d id=0x%04x\n",
 195                          pile, needed, id);
 196                 return -EINVAL;
 197         }
 198
 199         /* start the linear search with an imperfect hint */
 200         i = pile->search_hint;
 201         while (i < pile->num_entries) {
 202                 /* skip already allocated entries */
 203                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 204                         i++;
 205                         continue;
 206                 }
 207
 208                 /* do we have enough in this lump? */
 209                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 210                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 211                                 break;
 212                 }
 213
 214                 if (j == needed) {
 215                         /* there was enough, so assign it to the requestor */
 216                         for (j = 0; j < needed; j++)
 217                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 218                         ret = i;
 219                         pile->search_hint = i + j;
 220                         break;
 221                 }
 222
 223                 /* not enough, so skip over it and continue looking */
 224                 i += j;
 225         }
 226
 227         return ret;
 228 }
 229
 230 /**
 231  * i40e_put_lump - return a lump of generic resource
 232  * @pile: the pile of resource to search
 233  * @index: the base item index
 234  * @id: the owner id of the items assigned
 235  *
 236  * Returns the count of items in the lump
 237  **/
 238 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 239 {
 240         int valid_id = (id | I40E_PILE_VALID_BIT);
 241         int count = 0;
 242         int i;
 243
 244         if (!pile || index >= pile->num_entries)
 245                 return -EINVAL;
 246
 247         for (i = index;
 248              i < pile->num_entries && pile->list[i] == valid_id;
 249              i++) {
 250                 pile->list[i] = 0;
 251                 count++;
 252         }
 253
 254         if (count && index < pile->search_hint)
 255                 pile->search_hint = index;
 256
 257         return count;
 258 }
 259
 260 /**
 261  * i40e_find_vsi_from_id - searches for the vsi with the given id
 262  * @pf - the pf structure to search for the vsi
 263  * @id - id of the vsi it is searching for
 264  **/
 265 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 266 {
 267         int i;
 268
 269         for (i = 0; i < pf->num_alloc_vsi; i++)
 270                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 271                         return pf->vsi[i];
 272
 273         return NULL;
 274 }
 275
 276 /**
 277  * i40e_service_event_schedule - Schedule the service task to wake up
 278  * @pf: board private structure
 279  *
 280  * If not already scheduled, this puts the task into the work queue
 281  **/
 282 static void i40e_service_event_schedule(struct i40e_pf *pf)
 283 {
 284         if (!test_bit(__I40E_DOWN, &pf->state) &&
 285             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 286             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 287                 schedule_work(&pf->service_task);
 288 }
 289
 290 /**
 291  * i40e_tx_timeout - Respond to a Tx Hang
 292  * @netdev: network interface device structure
 293  *
 294  * If any port has noticed a Tx timeout, it is likely that the whole
 295  * device is munged, not just the one netdev port, so go for the full
 296  * reset.
 297  **/
 298 #ifdef I40E_FCOE
 299 void i40e_tx_timeout(struct net_device *netdev)
 300 #else
 301 static void i40e_tx_timeout(struct net_device *netdev)
 302 #endif
 303 {
 304         struct i40e_netdev_priv *np = netdev_priv(netdev);
 305         struct i40e_vsi *vsi = np->vsi;
 306         struct i40e_pf *pf = vsi->back;
 307         struct i40e_ring *tx_ring = NULL;
 308         unsigned int i, hung_queue = 0;
 309         u32 head, val;
 310
 311         pf->tx_timeout_count++;
 312
 313         /* find the stopped queue the same way the stack does */
 314         for (i = 0; i < netdev->num_tx_queues; i++) {
 315                 struct netdev_queue *q;
 316                 unsigned long trans_start;
 317
 318                 q = netdev_get_tx_queue(netdev, i);
 319                 trans_start = q->trans_start ? : netdev->trans_start;
 320                 if (netif_xmit_stopped(q) &&
 321                     time_after(jiffies,
 322                                (trans_start + netdev->watchdog_timeo))) {
 323                         hung_queue = i;
 324                         break;
 325                 }
 326         }
 327
 328         if (i == netdev->num_tx_queues) {
 329                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 330         } else {
 331                 /* now that we have an index, find the tx_ring struct */
 332                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 333                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 334                                 if (hung_queue ==
 335                                     vsi->tx_rings[i]->queue_index) {
 336                                         tx_ring = vsi->tx_rings[i];
 337                                         break;
 338                                 }
 339                         }
 340                 }
 341         }
 342
 343         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 344                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 345         else if (time_before(jiffies,
 346                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 347                 return;   /* don't do any new action before the next timeout */
 348
 349         if (tx_ring) {
 350                 head = i40e_get_head(tx_ring);
 351                 /* Read interrupt register */
 352                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 353                         val = rd32(&pf->hw,
 354                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 355                                                 tx_ring->vsi->base_vector - 1));
 356                 else
 357                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 358
 359                 netdev_info(netdev, "tx_timeout: VSI_seid: %d, Q %d, NTC: 0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x, INT: 0x%x\n",
 360                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 361                             head, tx_ring->next_to_use,
 362                             readl(tx_ring->tail), val);
 363         }
 364
 365         pf->tx_timeout_last_recovery = jiffies;
 366         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 367                     pf->tx_timeout_recovery_level, hung_queue);
 368
 369         switch (pf->tx_timeout_recovery_level) {
 370         case 1:
 371                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 372                 break;
 373         case 2:
 374                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 375                 break;
 376         case 3:
 377                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 378                 break;
 379         default:
 380                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 381                 break;
 382         }
 383
 384         i40e_service_event_schedule(pf);
 385         pf->tx_timeout_recovery_level++;
 386 }
 387
 388 /**
 389  * i40e_release_rx_desc - Store the new tail and head values
 390  * @rx_ring: ring to bump
 391  * @val: new head index
 392  **/
 393 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 394 {
 395         rx_ring->next_to_use = val;
 396
 397         /* Force memory writes to complete before letting h/w
 398          * know there are new descriptors to fetch.  (Only
 399          * applicable for weak-ordered memory model archs,
 400          * such as IA-64).
 401          */
 402         wmb();
 403         writel(val, rx_ring->tail);
 404 }
 405
 406 /**
 407  * i40e_get_vsi_stats_struct - Get System Network Statistics
 408  * @vsi: the VSI we care about
 409  *
 410  * Returns the address of the device statistics structure.
 411  * The statistics are actually updated from the service task.
 412  **/
 413 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 414 {
 415         return &vsi->net_stats;
 416 }
 417
 418 /**
 419  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 420  * @netdev: network interface device structure
 421  *
 422  * Returns the address of the device statistics structure.
 423  * The statistics are actually updated from the service task.
 424  **/
 425 #ifdef I40E_FCOE
 426 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 427                                              struct net_device *netdev,
 428                                              struct rtnl_link_stats64 *stats)
 429 #else
 430 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 431                                              struct net_device *netdev,
 432                                              struct rtnl_link_stats64 *stats)
 433 #endif
 434 {
 435         struct i40e_netdev_priv *np = netdev_priv(netdev);
 436         struct i40e_ring *tx_ring, *rx_ring;
 437         struct i40e_vsi *vsi = np->vsi;
 438         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 439         int i;
 440
 441         if (test_bit(__I40E_DOWN, &vsi->state))
 442                 return stats;
 443
 444         if (!vsi->tx_rings)
 445                 return stats;
 446
 447         rcu_read_lock();
 448         for (i = 0; i < vsi->num_queue_pairs; i++) {
 449                 u64 bytes, packets;
 450                 unsigned int start;
 451
 452                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 453                 if (!tx_ring)
 454                         continue;
 455
 456                 do {
 457                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 458                         packets = tx_ring->stats.packets;
 459                         bytes   = tx_ring->stats.bytes;
 460                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 461
 462                 stats->tx_packets += packets;
 463                 stats->tx_bytes   += bytes;
 464                 rx_ring = &tx_ring[1];
 465
 466                 do {
 467                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 468                         packets = rx_ring->stats.packets;
 469                         bytes   = rx_ring->stats.bytes;
 470                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 471
 472                 stats->rx_packets += packets;
 473                 stats->rx_bytes   += bytes;
 474         }
 475         rcu_read_unlock();
 476
 477         /* following stats updated by i40e_watchdog_subtask() */
 478         stats->multicast        = vsi_stats->multicast;
 479         stats->tx_errors        = vsi_stats->tx_errors;
 480         stats->tx_dropped       = vsi_stats->tx_dropped;
 481         stats->rx_errors        = vsi_stats->rx_errors;
 482         stats->rx_dropped       = vsi_stats->rx_dropped;
 483         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 484         stats->rx_length_errors = vsi_stats->rx_length_errors;
 485
 486         return stats;
 487 }
 488
 489 /**
 490  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 491  * @vsi: the VSI to have its stats reset
 492  **/
 493 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 494 {
 495         struct rtnl_link_stats64 *ns;
 496         int i;
 497
 498         if (!vsi)
 499                 return;
 500
 501         ns = i40e_get_vsi_stats_struct(vsi);
 502         memset(ns, 0, sizeof(*ns));
 503         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 504         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 505         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 506         if (vsi->rx_rings && vsi->rx_rings[0]) {
 507                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 508                         memset(&vsi->rx_rings[i]->stats, 0,
 509                                sizeof(vsi->rx_rings[i]->stats));
 510                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 511                                sizeof(vsi->rx_rings[i]->rx_stats));
 512                         memset(&vsi->tx_rings[i]->stats, 0,
 513                                sizeof(vsi->tx_rings[i]->stats));
 514                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 515                                sizeof(vsi->tx_rings[i]->tx_stats));
 516                 }
 517         }
 518         vsi->stat_offsets_loaded = false;
 519 }
 520
 521 /**
 522  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 523  * @pf: the PF to be reset
 524  **/
 525 void i40e_pf_reset_stats(struct i40e_pf *pf)
 526 {
 527         int i;
 528
 529         memset(&pf->stats, 0, sizeof(pf->stats));
 530         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 531         pf->stat_offsets_loaded = false;
 532
 533         for (i = 0; i < I40E_MAX_VEB; i++) {
 534                 if (pf->veb[i]) {
 535                         memset(&pf->veb[i]->stats, 0,
 536                                sizeof(pf->veb[i]->stats));
 537                         memset(&pf->veb[i]->stats_offsets, 0,
 538                                sizeof(pf->veb[i]->stats_offsets));
 539                         pf->veb[i]->stat_offsets_loaded = false;
 540                 }
 541         }
 542 }
 543
 544 /**
 545  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 546  * @hw: ptr to the hardware info
 547  * @hireg: the high 32 bit reg to read
 548  * @loreg: the low 32 bit reg to read
 549  * @offset_loaded: has the initial offset been loaded yet
 550  * @offset: ptr to current offset value
 551  * @stat: ptr to the stat
 552  *
 553  * Since the device stats are not reset at PFReset, they likely will not
 554  * be zeroed when the driver starts.  We'll save the first values read
 555  * and use them as offsets to be subtracted from the raw values in order
 556  * to report stats that count from zero.  In the process, we also manage
 557  * the potential roll-over.
 558  **/
 559 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 560                                bool offset_loaded, u64 *offset, u64 *stat)
 561 {
 562         u64 new_data;
 563
 564         if (hw->device_id == I40E_DEV_ID_QEMU) {
 565                 new_data = rd32(hw, loreg);
 566                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 567         } else {
 568                 new_data = rd64(hw, loreg);
 569         }
 570         if (!offset_loaded)
 571                 *offset = new_data;
 572         if (likely(new_data >= *offset))
 573                 *stat = new_data - *offset;
 574         else
 575                 *stat = (new_data + BIT_ULL(48)) - *offset;
 576         *stat &= 0xFFFFFFFFFFFFULL;
 577 }
 578
 579 /**
 580  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 581  * @hw: ptr to the hardware info
 582  * @reg: the hw reg to read
 583  * @offset_loaded: has the initial offset been loaded yet
 584  * @offset: ptr to current offset value
 585  * @stat: ptr to the stat
 586  **/
 587 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 588                                bool offset_loaded, u64 *offset, u64 *stat)
 589 {
 590         u32 new_data;
 591
 592         new_data = rd32(hw, reg);
 593         if (!offset_loaded)
 594                 *offset = new_data;
 595         if (likely(new_data >= *offset))
 596                 *stat = (u32)(new_data - *offset);
 597         else
 598                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 599 }
 600
 601 /**
 602  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 603  * @vsi: the VSI to be updated
 604  **/
 605 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 606 {
 607         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 608         struct i40e_pf *pf = vsi->back;
 609         struct i40e_hw *hw = &pf->hw;
 610         struct i40e_eth_stats *oes;
 611         struct i40e_eth_stats *es;     /* device's eth stats */
 612
 613         es = &vsi->eth_stats;
 614         oes = &vsi->eth_stats_offsets;
 615
 616         /* Gather up the stats that the hw collects */
 617         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 618                            vsi->stat_offsets_loaded,
 619                            &oes->tx_errors, &es->tx_errors);
 620         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 621                            vsi->stat_offsets_loaded,
 622                            &oes->rx_discards, &es->rx_discards);
 623         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 624                            vsi->stat_offsets_loaded,
 625                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 626         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 627                            vsi->stat_offsets_loaded,
 628                            &oes->tx_errors, &es->tx_errors);
 629
 630         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 631                            I40E_GLV_GORCL(stat_idx),
 632                            vsi->stat_offsets_loaded,
 633                            &oes->rx_bytes, &es->rx_bytes);
 634         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 635                            I40E_GLV_UPRCL(stat_idx),
 636                            vsi->stat_offsets_loaded,
 637                            &oes->rx_unicast, &es->rx_unicast);
 638         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 639                            I40E_GLV_MPRCL(stat_idx),
 640                            vsi->stat_offsets_loaded,
 641                            &oes->rx_multicast, &es->rx_multicast);
 642         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 643                            I40E_GLV_BPRCL(stat_idx),
 644                            vsi->stat_offsets_loaded,
 645                            &oes->rx_broadcast, &es->rx_broadcast);
 646
 647         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 648                            I40E_GLV_GOTCL(stat_idx),
 649                            vsi->stat_offsets_loaded,
 650                            &oes->tx_bytes, &es->tx_bytes);
 651         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 652                            I40E_GLV_UPTCL(stat_idx),
 653                            vsi->stat_offsets_loaded,
 654                            &oes->tx_unicast, &es->tx_unicast);
 655         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 656                            I40E_GLV_MPTCL(stat_idx),
 657                            vsi->stat_offsets_loaded,
 658                            &oes->tx_multicast, &es->tx_multicast);
 659         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 660                            I40E_GLV_BPTCL(stat_idx),
 661                            vsi->stat_offsets_loaded,
 662                            &oes->tx_broadcast, &es->tx_broadcast);
 663         vsi->stat_offsets_loaded = true;
 664 }
 665
 666 /**
 667  * i40e_update_veb_stats - Update Switch component statistics
 668  * @veb: the VEB being updated
 669  **/
 670 static void i40e_update_veb_stats(struct i40e_veb *veb)
 671 {
 672         struct i40e_pf *pf = veb->pf;
 673         struct i40e_hw *hw = &pf->hw;
 674         struct i40e_eth_stats *oes;
 675         struct i40e_eth_stats *es;     /* device's eth stats */
 676         struct i40e_veb_tc_stats *veb_oes;
 677         struct i40e_veb_tc_stats *veb_es;
 678         int i, idx = 0;
 679
 680         idx = veb->stats_idx;
 681         es = &veb->stats;
 682         oes = &veb->stats_offsets;
 683         veb_es = &veb->tc_stats;
 684         veb_oes = &veb->tc_stats_offsets;
 685
 686         /* Gather up the stats that the hw collects */
 687         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 688                            veb->stat_offsets_loaded,
 689                            &oes->tx_discards, &es->tx_discards);
 690         if (hw->revision_id > 0)
 691                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 692                                    veb->stat_offsets_loaded,
 693                                    &oes->rx_unknown_protocol,
 694                                    &es->rx_unknown_protocol);
 695         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 696                            veb->stat_offsets_loaded,
 697                            &oes->rx_bytes, &es->rx_bytes);
 698         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 699                            veb->stat_offsets_loaded,
 700                            &oes->rx_unicast, &es->rx_unicast);
 701         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 702                            veb->stat_offsets_loaded,
 703                            &oes->rx_multicast, &es->rx_multicast);
 704         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 705                            veb->stat_offsets_loaded,
 706                            &oes->rx_broadcast, &es->rx_broadcast);
 707
 708         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 709                            veb->stat_offsets_loaded,
 710                            &oes->tx_bytes, &es->tx_bytes);
 711         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 712                            veb->stat_offsets_loaded,
 713                            &oes->tx_unicast, &es->tx_unicast);
 714         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 715                            veb->stat_offsets_loaded,
 716                            &oes->tx_multicast, &es->tx_multicast);
 717         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 718                            veb->stat_offsets_loaded,
 719                            &oes->tx_broadcast, &es->tx_broadcast);
 720         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 721                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 722                                    I40E_GLVEBTC_RPCL(i, idx),
 723                                    veb->stat_offsets_loaded,
 724                                    &veb_oes->tc_rx_packets[i],
 725                                    &veb_es->tc_rx_packets[i]);
 726                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 727                                    I40E_GLVEBTC_RBCL(i, idx),
 728                                    veb->stat_offsets_loaded,
 729                                    &veb_oes->tc_rx_bytes[i],
 730                                    &veb_es->tc_rx_bytes[i]);
 731                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 732                                    I40E_GLVEBTC_TPCL(i, idx),
 733                                    veb->stat_offsets_loaded,
 734                                    &veb_oes->tc_tx_packets[i],
 735                                    &veb_es->tc_tx_packets[i]);
 736                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 737                                    I40E_GLVEBTC_TBCL(i, idx),
 738                                    veb->stat_offsets_loaded,
 739                                    &veb_oes->tc_tx_bytes[i],
 740                                    &veb_es->tc_tx_bytes[i]);
 741         }
 742         veb->stat_offsets_loaded = true;
 743 }
 744
 745 #ifdef I40E_FCOE
 746 /**
 747  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 748  * @vsi: the VSI that is capable of doing FCoE
 749  **/
 750 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 751 {
 752         struct i40e_pf *pf = vsi->back;
 753         struct i40e_hw *hw = &pf->hw;
 754         struct i40e_fcoe_stats *ofs;
 755         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 756         int idx;
 757
 758         if (vsi->type != I40E_VSI_FCOE)
 759                 return;
 760
 761         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 762         fs = &vsi->fcoe_stats;
 763         ofs = &vsi->fcoe_stats_offsets;
 764
 765         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 766                            vsi->fcoe_stat_offsets_loaded,
 767                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 768         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 769                            vsi->fcoe_stat_offsets_loaded,
 770                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 771         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 772                            vsi->fcoe_stat_offsets_loaded,
 773                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 774         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 775                            vsi->fcoe_stat_offsets_loaded,
 776                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 777         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 778                            vsi->fcoe_stat_offsets_loaded,
 779                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 780         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 781                            vsi->fcoe_stat_offsets_loaded,
 782                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 783         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 784                            vsi->fcoe_stat_offsets_loaded,
 785                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 786         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 787                            vsi->fcoe_stat_offsets_loaded,
 788                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 789
 790         vsi->fcoe_stat_offsets_loaded = true;
 791 }
 792
 793 #endif
 794 /**
 795  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 796  * @pf: the corresponding PF
 797  *
 798  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 799  **/
 800 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 801 {
 802         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 803         struct i40e_hw_port_stats *nsd = &pf->stats;
 804         struct i40e_hw *hw = &pf->hw;
 805         u64 xoff = 0;
 806
 807         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 808             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 809                 return;
 810
 811         xoff = nsd->link_xoff_rx;
 812         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 813                            pf->stat_offsets_loaded,
 814                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 815
 816         /* No new LFC xoff rx */
 817         if (!(nsd->link_xoff_rx - xoff))
 818                 return;
 819
 820 }
 821
 822 /**
 823  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 824  * @pf: the corresponding PF
 825  *
 826  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 827  **/
 828 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 829 {
 830         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 831         struct i40e_hw_port_stats *nsd = &pf->stats;
 832         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 833         struct i40e_dcbx_config *dcb_cfg;
 834         struct i40e_hw *hw = &pf->hw;
 835         u16 i;
 836         u8 tc;
 837
 838         dcb_cfg = &hw->local_dcbx_config;
 839
 840         /* Collect Link XOFF stats when PFC is disabled */
 841         if (!dcb_cfg->pfc.pfcenable) {
 842                 i40e_update_link_xoff_rx(pf);
 843                 return;
 844         }
 845
 846         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 847                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 848
 849                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 850                                    pf->stat_offsets_loaded,
 851                                    &osd->priority_xoff_rx[i],
 852                                    &nsd->priority_xoff_rx[i]);
 853
 854                 /* No new PFC xoff rx */
 855                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 856                         continue;
 857                 /* Get the TC for given priority */
 858                 tc = dcb_cfg->etscfg.prioritytable[i];
 859                 xoff[tc] = true;
 860         }
 861 }
 862
 863 /**
 864  * i40e_update_vsi_stats - Update the vsi statistics counters.
 865  * @vsi: the VSI to be updated
 866  *
 867  * There are a few instances where we store the same stat in a
 868  * couple of different structs.  This is partly because we have
 869  * the netdev stats that need to be filled out, which is slightly
 870  * different from the "eth_stats" defined by the chip and used in
 871  * VF communications.  We sort it out here.
 872  **/
 873 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 874 {
 875         struct i40e_pf *pf = vsi->back;
 876         struct rtnl_link_stats64 *ons;
 877         struct rtnl_link_stats64 *ns;   /* netdev stats */
 878         struct i40e_eth_stats *oes;
 879         struct i40e_eth_stats *es;     /* device's eth stats */
 880         u32 tx_restart, tx_busy;
 881         struct i40e_ring *p;
 882         u32 rx_page, rx_buf;
 883         u64 bytes, packets;
 884         unsigned int start;
 885         u64 tx_linearize;
 886         u64 tx_force_wb;
 887         u64 rx_p, rx_b;
 888         u64 tx_p, tx_b;
 889         u16 q;
 890
 891         if (test_bit(__I40E_DOWN, &vsi->state) ||
 892             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 893                 return;
 894
 895         ns = i40e_get_vsi_stats_struct(vsi);
 896         ons = &vsi->net_stats_offsets;
 897         es = &vsi->eth_stats;
 898         oes = &vsi->eth_stats_offsets;
 899
 900         /* Gather up the netdev and vsi stats that the driver collects
 901          * on the fly during packet processing
 902          */
 903         rx_b = rx_p = 0;
 904         tx_b = tx_p = 0;
 905         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 906         rx_page = 0;
 907         rx_buf = 0;
 908         rcu_read_lock();
 909         for (q = 0; q < vsi->num_queue_pairs; q++) {
 910                 /* locate Tx ring */
 911                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 912
 913                 do {
 914                         start = u64_stats_fetch_begin_irq(&p->syncp);
 915                         packets = p->stats.packets;
 916                         bytes = p->stats.bytes;
 917                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 918                 tx_b += bytes;
 919                 tx_p += packets;
 920                 tx_restart += p->tx_stats.restart_queue;
 921                 tx_busy += p->tx_stats.tx_busy;
 922                 tx_linearize += p->tx_stats.tx_linearize;
 923                 tx_force_wb += p->tx_stats.tx_force_wb;
 924
 925                 /* Rx queue is part of the same block as Tx queue */
 926                 p = &p[1];
 927                 do {
 928                         start = u64_stats_fetch_begin_irq(&p->syncp);
 929                         packets = p->stats.packets;
 930                         bytes = p->stats.bytes;
 931                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 932                 rx_b += bytes;
 933                 rx_p += packets;
 934                 rx_buf += p->rx_stats.alloc_buff_failed;
 935                 rx_page += p->rx_stats.alloc_page_failed;
 936         }
 937         rcu_read_unlock();
 938         vsi->tx_restart = tx_restart;
 939         vsi->tx_busy = tx_busy;
 940         vsi->tx_linearize = tx_linearize;
 941         vsi->tx_force_wb = tx_force_wb;
 942         vsi->rx_page_failed = rx_page;
 943         vsi->rx_buf_failed = rx_buf;
 944
 945         ns->rx_packets = rx_p;
 946         ns->rx_bytes = rx_b;
 947         ns->tx_packets = tx_p;
 948         ns->tx_bytes = tx_b;
 949
 950         /* update netdev stats from eth stats */
 951         i40e_update_eth_stats(vsi);
 952         ons->tx_errors = oes->tx_errors;
 953         ns->tx_errors = es->tx_errors;
 954         ons->multicast = oes->rx_multicast;
 955         ns->multicast = es->rx_multicast;
 956         ons->rx_dropped = oes->rx_discards;
 957         ns->rx_dropped = es->rx_discards;
 958         ons->tx_dropped = oes->tx_discards;
 959         ns->tx_dropped = es->tx_discards;
 960
 961         /* pull in a couple PF stats if this is the main vsi */
 962         if (vsi == pf->vsi[pf->lan_vsi]) {
 963                 ns->rx_crc_errors = pf->stats.crc_errors;
 964                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 965                 ns->rx_length_errors = pf->stats.rx_length_errors;
 966         }
 967 }
 968
 969 /**
 970  * i40e_update_pf_stats - Update the PF statistics counters.
 971  * @pf: the PF to be updated
 972  **/
 973 static void i40e_update_pf_stats(struct i40e_pf *pf)
 974 {
 975         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 976         struct i40e_hw_port_stats *nsd = &pf->stats;
 977         struct i40e_hw *hw = &pf->hw;
 978         u32 val;
 979         int i;
 980
 981         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 982                            I40E_GLPRT_GORCL(hw->port),
 983                            pf->stat_offsets_loaded,
 984                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 985         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 986                            I40E_GLPRT_GOTCL(hw->port),
 987                            pf->stat_offsets_loaded,
 988                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 989         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 990                            pf->stat_offsets_loaded,
 991                            &osd->eth.rx_discards,
 992                            &nsd->eth.rx_discards);
 993         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 994                            I40E_GLPRT_UPRCL(hw->port),
 995                            pf->stat_offsets_loaded,
 996                            &osd->eth.rx_unicast,
 997                            &nsd->eth.rx_unicast);
 998         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 999                            I40E_GLPRT_MPRCL(hw->port),
1000                            pf->stat_offsets_loaded,
1001                            &osd->eth.rx_multicast,
1002                            &nsd->eth.rx_multicast);
1003         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
1004                            I40E_GLPRT_BPRCL(hw->port),
1005                            pf->stat_offsets_loaded,
1006                            &osd->eth.rx_broadcast,
1007                            &nsd->eth.rx_broadcast);
1008         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
1009                            I40E_GLPRT_UPTCL(hw->port),
1010                            pf->stat_offsets_loaded,
1011                            &osd->eth.tx_unicast,
1012                            &nsd->eth.tx_unicast);
1013         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
1014                            I40E_GLPRT_MPTCL(hw->port),
1015                            pf->stat_offsets_loaded,
1016                            &osd->eth.tx_multicast,
1017                            &nsd->eth.tx_multicast);
1018         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
1019                            I40E_GLPRT_BPTCL(hw->port),
1020                            pf->stat_offsets_loaded,
1021                            &osd->eth.tx_broadcast,
1022                            &nsd->eth.tx_broadcast);
1023
1024         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->tx_dropped_link_down,
1027                            &nsd->tx_dropped_link_down);
1028
1029         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
1030                            pf->stat_offsets_loaded,
1031                            &osd->crc_errors, &nsd->crc_errors);
1032
1033         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
1034                            pf->stat_offsets_loaded,
1035                            &osd->illegal_bytes, &nsd->illegal_bytes);
1036
1037         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
1038                            pf->stat_offsets_loaded,
1039                            &osd->mac_local_faults,
1040                            &nsd->mac_local_faults);
1041         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
1042                            pf->stat_offsets_loaded,
1043                            &osd->mac_remote_faults,
1044                            &nsd->mac_remote_faults);
1045
1046         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->rx_length_errors,
1049                            &nsd->rx_length_errors);
1050
1051         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1052                            pf->stat_offsets_loaded,
1053                            &osd->link_xon_rx, &nsd->link_xon_rx);
1054         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1055                            pf->stat_offsets_loaded,
1056                            &osd->link_xon_tx, &nsd->link_xon_tx);
1057         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
1058         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1059                            pf->stat_offsets_loaded,
1060                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1061
1062         for (i = 0; i < 8; i++) {
1063                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1064                                    pf->stat_offsets_loaded,
1065                                    &osd->priority_xon_rx[i],
1066                                    &nsd->priority_xon_rx[i]);
1067                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1068                                    pf->stat_offsets_loaded,
1069                                    &osd->priority_xon_tx[i],
1070                                    &nsd->priority_xon_tx[i]);
1071                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1072                                    pf->stat_offsets_loaded,
1073                                    &osd->priority_xoff_tx[i],
1074                                    &nsd->priority_xoff_tx[i]);
1075                 i40e_stat_update32(hw,
1076                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1077                                    pf->stat_offsets_loaded,
1078                                    &osd->priority_xon_2_xoff[i],
1079                                    &nsd->priority_xon_2_xoff[i]);
1080         }
1081
1082         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1083                            I40E_GLPRT_PRC64L(hw->port),
1084                            pf->stat_offsets_loaded,
1085                            &osd->rx_size_64, &nsd->rx_size_64);
1086         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1087                            I40E_GLPRT_PRC127L(hw->port),
1088                            pf->stat_offsets_loaded,
1089                            &osd->rx_size_127, &nsd->rx_size_127);
1090         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1091                            I40E_GLPRT_PRC255L(hw->port),
1092                            pf->stat_offsets_loaded,
1093                            &osd->rx_size_255, &nsd->rx_size_255);
1094         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1095                            I40E_GLPRT_PRC511L(hw->port),
1096                            pf->stat_offsets_loaded,
1097                            &osd->rx_size_511, &nsd->rx_size_511);
1098         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1099                            I40E_GLPRT_PRC1023L(hw->port),
1100                            pf->stat_offsets_loaded,
1101                            &osd->rx_size_1023, &nsd->rx_size_1023);
1102         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1103                            I40E_GLPRT_PRC1522L(hw->port),
1104                            pf->stat_offsets_loaded,
1105                            &osd->rx_size_1522, &nsd->rx_size_1522);
1106         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1107                            I40E_GLPRT_PRC9522L(hw->port),
1108                            pf->stat_offsets_loaded,
1109                            &osd->rx_size_big, &nsd->rx_size_big);
1110
1111         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1112                            I40E_GLPRT_PTC64L(hw->port),
1113                            pf->stat_offsets_loaded,
1114                            &osd->tx_size_64, &nsd->tx_size_64);
1115         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1116                            I40E_GLPRT_PTC127L(hw->port),
1117                            pf->stat_offsets_loaded,
1118                            &osd->tx_size_127, &nsd->tx_size_127);
1119         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1120                            I40E_GLPRT_PTC255L(hw->port),
1121                            pf->stat_offsets_loaded,
1122                            &osd->tx_size_255, &nsd->tx_size_255);
1123         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1124                            I40E_GLPRT_PTC511L(hw->port),
1125                            pf->stat_offsets_loaded,
1126                            &osd->tx_size_511, &nsd->tx_size_511);
1127         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1128                            I40E_GLPRT_PTC1023L(hw->port),
1129                            pf->stat_offsets_loaded,
1130                            &osd->tx_size_1023, &nsd->tx_size_1023);
1131         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1132                            I40E_GLPRT_PTC1522L(hw->port),
1133                            pf->stat_offsets_loaded,
1134                            &osd->tx_size_1522, &nsd->tx_size_1522);
1135         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1136                            I40E_GLPRT_PTC9522L(hw->port),
1137                            pf->stat_offsets_loaded,
1138                            &osd->tx_size_big, &nsd->tx_size_big);
1139
1140         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1141                            pf->stat_offsets_loaded,
1142                            &osd->rx_undersize, &nsd->rx_undersize);
1143         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1144                            pf->stat_offsets_loaded,
1145                            &osd->rx_fragments, &nsd->rx_fragments);
1146         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1147                            pf->stat_offsets_loaded,
1148                            &osd->rx_oversize, &nsd->rx_oversize);
1149         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1150                            pf->stat_offsets_loaded,
1151                            &osd->rx_jabber, &nsd->rx_jabber);
1152
1153         /* FDIR stats */
1154         i40e_stat_update32(hw,
1155                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1156                            pf->stat_offsets_loaded,
1157                            &osd->fd_atr_match, &nsd->fd_atr_match);
1158         i40e_stat_update32(hw,
1159                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1160                            pf->stat_offsets_loaded,
1161                            &osd->fd_sb_match, &nsd->fd_sb_match);
1162         i40e_stat_update32(hw,
1163                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1164                       pf->stat_offsets_loaded,
1165                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1166
1167         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1168         nsd->tx_lpi_status =
1169                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1170                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1171         nsd->rx_lpi_status =
1172                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1173                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1174         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1175                            pf->stat_offsets_loaded,
1176                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1177         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1178                            pf->stat_offsets_loaded,
1179                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1180
1181         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1182             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1183                 nsd->fd_sb_status = true;
1184         else
1185                 nsd->fd_sb_status = false;
1186
1187         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1188             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1189                 nsd->fd_atr_status = true;
1190         else
1191                 nsd->fd_atr_status = false;
1192
1193         pf->stat_offsets_loaded = true;
1194 }
1195
1196 /**
1197  * i40e_update_stats - Update the various statistics counters.
1198  * @vsi: the VSI to be updated
1199  *
1200  * Update the various stats for this VSI and its related entities.
1201  **/
1202 void i40e_update_stats(struct i40e_vsi *vsi)
1203 {
1204         struct i40e_pf *pf = vsi->back;
1205
1206         if (vsi == pf->vsi[pf->lan_vsi])
1207                 i40e_update_pf_stats(pf);
1208
1209         i40e_update_vsi_stats(vsi);
1210 #ifdef I40E_FCOE
1211         i40e_update_fcoe_stats(vsi);
1212 #endif
1213 }
1214
1215 /**
1216  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1217  * @vsi: the VSI to be searched
1218  * @macaddr: the MAC address
1219  * @vlan: the vlan
1220  * @is_vf: make sure its a VF filter, else doesn't matter
1221  * @is_netdev: make sure its a netdev filter, else doesn't matter
1222  *
1223  * Returns ptr to the filter object or NULL
1224  **/
1225 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1226                                                 u8 *macaddr, s16 vlan,
1227                                                 bool is_vf, bool is_netdev)
1228 {
1229         struct i40e_mac_filter *f;
1230
1231         if (!vsi || !macaddr)
1232                 return NULL;
1233
1234         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1235                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1236                     (vlan == f->vlan)    &&
1237                     (!is_vf || f->is_vf) &&
1238                     (!is_netdev || f->is_netdev))
1239                         return f;
1240         }
1241         return NULL;
1242 }
1243
1244 /**
1245  * i40e_find_mac - Find a mac addr in the macvlan filters list
1246  * @vsi: the VSI to be searched
1247  * @macaddr: the MAC address we are searching for
1248  * @is_vf: make sure its a VF filter, else doesn't matter
1249  * @is_netdev: make sure its a netdev filter, else doesn't matter
1250  *
1251  * Returns the first filter with the provided MAC address or NULL if
1252  * MAC address was not found
1253  **/
1254 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1255                                       bool is_vf, bool is_netdev)
1256 {
1257         struct i40e_mac_filter *f;
1258
1259         if (!vsi || !macaddr)
1260                 return NULL;
1261
1262         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1263                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1264                     (!is_vf || f->is_vf) &&
1265                     (!is_netdev || f->is_netdev))
1266                         return f;
1267         }
1268         return NULL;
1269 }
1270
1271 /**
1272  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1273  * @vsi: the VSI to be searched
1274  *
1275  * Returns true if VSI is in vlan mode or false otherwise
1276  **/
1277 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1278 {
1279         struct i40e_mac_filter *f;
1280
1281         /* Only -1 for all the filters denotes not in vlan mode
1282          * so we have to go through all the list in order to make sure
1283          */
1284         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1285                 if (f->vlan >= 0 || vsi->info.pvid)
1286                         return true;
1287         }
1288
1289         return false;
1290 }
1291
1292 /**
1293  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1294  * @vsi: the VSI to be searched
1295  * @macaddr: the mac address to be filtered
1296  * @is_vf: true if it is a VF
1297  * @is_netdev: true if it is a netdev
1298  *
1299  * Goes through all the macvlan filters and adds a
1300  * macvlan filter for each unique vlan that already exists
1301  *
1302  * Returns first filter found on success, else NULL
1303  **/
1304 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1305                                              bool is_vf, bool is_netdev)
1306 {
1307         struct i40e_mac_filter *f;
1308
1309         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1310                 if (vsi->info.pvid)
1311                         f->vlan = le16_to_cpu(vsi->info.pvid);
1312                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1313                                       is_vf, is_netdev)) {
1314                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1315                                              is_vf, is_netdev))
1316                                 return NULL;
1317                 }
1318         }
1319
1320         return list_first_entry_or_null(&vsi->mac_filter_list,
1321                                         struct i40e_mac_filter, list);
1322 }
1323
1324 /**
1325  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1326  * @vsi: the PF Main VSI - inappropriate for any other VSI
1327  * @macaddr: the MAC address
1328  *
1329  * Some older firmware configurations set up a default promiscuous VLAN
1330  * filter that needs to be removed.
1331  **/
1332 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1333 {
1334         struct i40e_aqc_remove_macvlan_element_data element;
1335         struct i40e_pf *pf = vsi->back;
1336         i40e_status ret;
1337
1338         /* Only appropriate for the PF main VSI */
1339         if (vsi->type != I40E_VSI_MAIN)
1340                 return -EINVAL;
1341
1342         memset(&element, 0, sizeof(element));
1343         ether_addr_copy(element.mac_addr, macaddr);
1344         element.vlan_tag = 0;
1345         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1346                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1347         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1348         if (ret)
1349                 return -ENOENT;
1350
1351         return 0;
1352 }
1353
1354 /**
1355  * i40e_add_filter - Add a mac/vlan filter to the VSI
1356  * @vsi: the VSI to be searched
1357  * @macaddr: the MAC address
1358  * @vlan: the vlan
1359  * @is_vf: make sure its a VF filter, else doesn't matter
1360  * @is_netdev: make sure its a netdev filter, else doesn't matter
1361  *
1362  * Returns ptr to the filter object or NULL when no memory available.
1363  *
1364  * NOTE: This function is expected to be called with mac_filter_list_lock
1365  * being held.
1366  **/
1367 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1368                                         u8 *macaddr, s16 vlan,
1369                                         bool is_vf, bool is_netdev)
1370 {
1371         struct i40e_mac_filter *f;
1372
1373         if (!vsi || !macaddr)
1374                 return NULL;
1375
1376         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1377         if (!f) {
1378                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1379                 if (!f)
1380                         goto add_filter_out;
1381
1382                 ether_addr_copy(f->macaddr, macaddr);
1383                 f->vlan = vlan;
1384                 f->changed = true;
1385
1386                 INIT_LIST_HEAD(&f->list);
1387                 list_add(&f->list, &vsi->mac_filter_list);
1388         }
1389
1390         /* increment counter and add a new flag if needed */
1391         if (is_vf) {
1392                 if (!f->is_vf) {
1393                         f->is_vf = true;
1394                         f->counter++;
1395                 }
1396         } else if (is_netdev) {
1397                 if (!f->is_netdev) {
1398                         f->is_netdev = true;
1399                         f->counter++;
1400                 }
1401         } else {
1402                 f->counter++;
1403         }
1404
1405         /* changed tells sync_filters_subtask to
1406          * push the filter down to the firmware
1407          */
1408         if (f->changed) {
1409                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1410                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1411         }
1412
1413 add_filter_out:
1414         return f;
1415 }
1416
1417 /**
1418  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1419  * @vsi: the VSI to be searched
1420  * @macaddr: the MAC address
1421  * @vlan: the vlan
1422  * @is_vf: make sure it's a VF filter, else doesn't matter
1423  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1424  *
1425  * NOTE: This function is expected to be called with mac_filter_list_lock
1426  * being held.
1427  **/
1428 void i40e_del_filter(struct i40e_vsi *vsi,
1429                      u8 *macaddr, s16 vlan,
1430                      bool is_vf, bool is_netdev)
1431 {
1432         struct i40e_mac_filter *f;
1433
1434         if (!vsi || !macaddr)
1435                 return;
1436
1437         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1438         if (!f || f->counter == 0)
1439                 return;
1440
1441         if (is_vf) {
1442                 if (f->is_vf) {
1443                         f->is_vf = false;
1444                         f->counter--;
1445                 }
1446         } else if (is_netdev) {
1447                 if (f->is_netdev) {
1448                         f->is_netdev = false;
1449                         f->counter--;
1450                 }
1451         } else {
1452                 /* make sure we don't remove a filter in use by VF or netdev */
1453                 int min_f = 0;
1454
1455                 min_f += (f->is_vf ? 1 : 0);
1456                 min_f += (f->is_netdev ? 1 : 0);
1457
1458                 if (f->counter > min_f)
1459                         f->counter--;
1460         }
1461
1462         /* counter == 0 tells sync_filters_subtask to
1463          * remove the filter from the firmware's list
1464          */
1465         if (f->counter == 0) {
1466                 f->changed = true;
1467                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1468                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1469         }
1470 }
1471
1472 /**
1473  * i40e_set_mac - NDO callback to set mac address
1474  * @netdev: network interface device structure
1475  * @p: pointer to an address structure
1476  *
1477  * Returns 0 on success, negative on failure
1478  **/
1479 #ifdef I40E_FCOE
1480 int i40e_set_mac(struct net_device *netdev, void *p)
1481 #else
1482 static int i40e_set_mac(struct net_device *netdev, void *p)
1483 #endif
1484 {
1485         struct i40e_netdev_priv *np = netdev_priv(netdev);
1486         struct i40e_vsi *vsi = np->vsi;
1487         struct i40e_pf *pf = vsi->back;
1488         struct i40e_hw *hw = &pf->hw;
1489         struct sockaddr *addr = p;
1490         struct i40e_mac_filter *f;
1491
1492         if (!is_valid_ether_addr(addr->sa_data))
1493                 return -EADDRNOTAVAIL;
1494
1495         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1496                 netdev_info(netdev, "already using mac address %pM\n",
1497                             addr->sa_data);
1498                 return 0;
1499         }
1500
1501         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1502             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1503                 return -EADDRNOTAVAIL;
1504
1505         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1506                 netdev_info(netdev, "returning to hw mac address %pM\n",
1507                             hw->mac.addr);
1508         else
1509                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1510
1511         if (vsi->type == I40E_VSI_MAIN) {
1512                 i40e_status ret;
1513
1514                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1515                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1516                                                 addr->sa_data, NULL);
1517                 if (ret) {
1518                         netdev_info(netdev,
1519                                     "Addr change for Main VSI failed: %d\n",
1520                                     ret);
1521                         return -EADDRNOTAVAIL;
1522                 }
1523         }
1524
1525         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1526                 struct i40e_aqc_remove_macvlan_element_data element;
1527
1528                 memset(&element, 0, sizeof(element));
1529                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1530                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1531                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1532         } else {
1533                 spin_lock_bh(&vsi->mac_filter_list_lock);
1534                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1535                                 false, false);
1536                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1537         }
1538
1539         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1540                 struct i40e_aqc_add_macvlan_element_data element;
1541
1542                 memset(&element, 0, sizeof(element));
1543                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1544                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1545                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1546         } else {
1547                 spin_lock_bh(&vsi->mac_filter_list_lock);
1548                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1549                                     false, false);
1550                 if (f)
1551                         f->is_laa = true;
1552                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1553         }
1554
1555         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1556         /* schedule our worker thread which will take care of
1557          * applying the new filter changes
1558          */
1559         i40e_service_event_schedule(vsi->back);
1560         return 0;
1561 }
1562
1563 /**
1564  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1565  * @vsi: the VSI being setup
1566  * @ctxt: VSI context structure
1567  * @enabled_tc: Enabled TCs bitmap
1568  * @is_add: True if called before Add VSI
1569  *
1570  * Setup VSI queue mapping for enabled traffic classes.
1571  **/
1572 #ifdef I40E_FCOE
1573 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1574                               struct i40e_vsi_context *ctxt,
1575                               u8 enabled_tc,
1576                               bool is_add)
1577 #else
1578 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1579                                      struct i40e_vsi_context *ctxt,
1580                                      u8 enabled_tc,
1581                                      bool is_add)
1582 #endif
1583 {
1584         struct i40e_pf *pf = vsi->back;
1585         u16 sections = 0;
1586         u8 netdev_tc = 0;
1587         u16 numtc = 0;
1588         u16 qcount;
1589         u8 offset;
1590         u16 qmap;
1591         int i;
1592         u16 num_tc_qps = 0;
1593
1594         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1595         offset = 0;
1596
1597         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1598                 /* Find numtc from enabled TC bitmap */
1599                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1600                         if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
1601                                 numtc++;
1602                 }
1603                 if (!numtc) {
1604                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1605                         numtc = 1;
1606                 }
1607         } else {
1608                 /* At least TC0 is enabled in case of non-DCB case */
1609                 numtc = 1;
1610         }
1611
1612         vsi->tc_config.numtc = numtc;
1613         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1614         /* Number of queues per enabled TC */
1615         /* In MFP case we can have a much lower count of MSIx
1616          * vectors available and so we need to lower the used
1617          * q count.
1618          */
1619         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1620                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1621         else
1622                 qcount = vsi->alloc_queue_pairs;
1623         num_tc_qps = qcount / numtc;
1624         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1625
1626         /* Setup queue offset/count for all TCs for given VSI */
1627         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1628                 /* See if the given TC is enabled for the given VSI */
1629                 if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
1630                         /* TC is enabled */
1631                         int pow, num_qps;
1632
1633                         switch (vsi->type) {
1634                         case I40E_VSI_MAIN:
1635                                 qcount = min_t(int, pf->alloc_rss_size,
1636                                                num_tc_qps);
1637                                 break;
1638 #ifdef I40E_FCOE
1639                         case I40E_VSI_FCOE:
1640                                 qcount = num_tc_qps;
1641                                 break;
1642 #endif
1643                         case I40E_VSI_FDIR:
1644                         case I40E_VSI_SRIOV:
1645                         case I40E_VSI_VMDQ2:
1646                         default:
1647                                 qcount = num_tc_qps;
1648                                 WARN_ON(i != 0);
1649                                 break;
1650                         }
1651                         vsi->tc_config.tc_info[i].qoffset = offset;
1652                         vsi->tc_config.tc_info[i].qcount = qcount;
1653
1654                         /* find the next higher power-of-2 of num queue pairs */
1655                         num_qps = qcount;
1656                         pow = 0;
1657                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1658                                 pow++;
1659                                 num_qps >>= 1;
1660                         }
1661
1662                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1663                         qmap =
1664                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1665                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1666
1667                         offset += qcount;
1668                 } else {
1669                         /* TC is not enabled so set the offset to
1670                          * default queue and allocate one queue
1671                          * for the given TC.
1672                          */
1673                         vsi->tc_config.tc_info[i].qoffset = 0;
1674                         vsi->tc_config.tc_info[i].qcount = 1;
1675                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1676
1677                         qmap = 0;
1678                 }
1679                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1680         }
1681
1682         /* Set actual Tx/Rx queue pairs */
1683         vsi->num_queue_pairs = offset;
1684         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1685                 if (vsi->req_queue_pairs > 0)
1686                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1687                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1688                         vsi->num_queue_pairs = pf->num_lan_msix;
1689         }
1690
1691         /* Scheduler section valid can only be set for ADD VSI */
1692         if (is_add) {
1693                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1694
1695                 ctxt->info.up_enable_bits = enabled_tc;
1696         }
1697         if (vsi->type == I40E_VSI_SRIOV) {
1698                 ctxt->info.mapping_flags |=
1699                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1700                 for (i = 0; i < vsi->num_queue_pairs; i++)
1701                         ctxt->info.queue_mapping[i] =
1702                                                cpu_to_le16(vsi->base_queue + i);
1703         } else {
1704                 ctxt->info.mapping_flags |=
1705                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1706                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1707         }
1708         ctxt->info.valid_sections |= cpu_to_le16(sections);
1709 }
1710
1711 /**
1712  * i40e_set_rx_mode - NDO callback to set the netdev filters
1713  * @netdev: network interface device structure
1714  **/
1715 #ifdef I40E_FCOE
1716 void i40e_set_rx_mode(struct net_device *netdev)
1717 #else
1718 static void i40e_set_rx_mode(struct net_device *netdev)
1719 #endif
1720 {
1721         struct i40e_netdev_priv *np = netdev_priv(netdev);
1722         struct i40e_mac_filter *f, *ftmp;
1723         struct i40e_vsi *vsi = np->vsi;
1724         struct netdev_hw_addr *uca;
1725         struct netdev_hw_addr *mca;
1726         struct netdev_hw_addr *ha;
1727
1728         spin_lock_bh(&vsi->mac_filter_list_lock);
1729
1730         /* add addr if not already in the filter list */
1731         netdev_for_each_uc_addr(uca, netdev) {
1732                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1733                         if (i40e_is_vsi_in_vlan(vsi))
1734                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1735                                                      false, true);
1736                         else
1737                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1738                                                 false, true);
1739                 }
1740         }
1741
1742         netdev_for_each_mc_addr(mca, netdev) {
1743                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1744                         if (i40e_is_vsi_in_vlan(vsi))
1745                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1746                                                      false, true);
1747                         else
1748                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1749                                                 false, true);
1750                 }
1751         }
1752
1753         /* remove filter if not in netdev list */
1754         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1755
1756                 if (!f->is_netdev)
1757                         continue;
1758
1759                 netdev_for_each_mc_addr(mca, netdev)
1760                         if (ether_addr_equal(mca->addr, f->macaddr))
1761                                 goto bottom_of_search_loop;
1762
1763                 netdev_for_each_uc_addr(uca, netdev)
1764                         if (ether_addr_equal(uca->addr, f->macaddr))
1765                                 goto bottom_of_search_loop;
1766
1767                 for_each_dev_addr(netdev, ha)
1768                         if (ether_addr_equal(ha->addr, f->macaddr))
1769                                 goto bottom_of_search_loop;
1770
1771                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1772                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1773
1774 bottom_of_search_loop:
1775                 continue;
1776         }
1777         spin_unlock_bh(&vsi->mac_filter_list_lock);
1778
1779         /* check for other flag changes */
1780         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1781                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1782                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1783         }
1784 }
1785
1786 /**
1787  * i40e_mac_filter_entry_clone - Clones a MAC filter entry
1788  * @src: source MAC filter entry to be clones
1789  *
1790  * Returns the pointer to newly cloned MAC filter entry or NULL
1791  * in case of error
1792  **/
1793 static struct i40e_mac_filter *i40e_mac_filter_entry_clone(
1794                                         struct i40e_mac_filter *src)
1795 {
1796         struct i40e_mac_filter *f;
1797
1798         f = kzalloc(sizeof(*f), GFP_ATOMIC);
1799         if (!f)
1800                 return NULL;
1801         *f = *src;
1802
1803         INIT_LIST_HEAD(&f->list);
1804
1805         return f;
1806 }
1807
1808 /**
1809  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1810  * @vsi: pointer to vsi struct
1811  * @from: Pointer to list which contains MAC filter entries - changes to
1812  *        those entries needs to be undone.
1813  *
1814  * MAC filter entries from list were slated to be removed from device.
1815  **/
1816 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1817                                          struct list_head *from)
1818 {
1819         struct i40e_mac_filter *f, *ftmp;
1820
1821         list_for_each_entry_safe(f, ftmp, from, list) {
1822                 f->changed = true;
1823                 /* Move the element back into MAC filter list*/
1824                 list_move_tail(&f->list, &vsi->mac_filter_list);
1825         }
1826 }
1827
1828 /**
1829  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1830  * @vsi: pointer to vsi struct
1831  *
1832  * MAC filter entries from list were slated to be added from device.
1833  **/
1834 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi)
1835 {
1836         struct i40e_mac_filter *f, *ftmp;
1837
1838         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1839                 if (!f->changed && f->counter)
1840                         f->changed = true;
1841         }
1842 }
1843
1844 /**
1845  * i40e_cleanup_add_list - Deletes the element from add list and release
1846  *                      memory
1847  * @add_list: Pointer to list which contains MAC filter entries
1848  **/
1849 static void i40e_cleanup_add_list(struct list_head *add_list)
1850 {
1851         struct i40e_mac_filter *f, *ftmp;
1852
1853         list_for_each_entry_safe(f, ftmp, add_list, list) {
1854                 list_del(&f->list);
1855                 kfree(f);
1856         }
1857 }
1858
1859 /**
1860  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1861  * @vsi: ptr to the VSI
1862  *
1863  * Push any outstanding VSI filter changes through the AdminQ.
1864  *
1865  * Returns 0 or error value
1866  **/
1867 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1868 {
1869         struct list_head tmp_del_list, tmp_add_list;
1870         struct i40e_mac_filter *f, *ftmp, *fclone;
1871         bool promisc_forced_on = false;
1872         bool add_happened = false;
1873         int filter_list_len = 0;
1874         u32 changed_flags = 0;
1875         bool err_cond = false;
1876         i40e_status ret = 0;
1877         struct i40e_pf *pf;
1878         int num_add = 0;
1879         int num_del = 0;
1880         int aq_err = 0;
1881         u16 cmd_flags;
1882
1883         /* empty array typed pointers, kcalloc later */
1884         struct i40e_aqc_add_macvlan_element_data *add_list;
1885         struct i40e_aqc_remove_macvlan_element_data *del_list;
1886
1887         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1888                 usleep_range(1000, 2000);
1889         pf = vsi->back;
1890
1891         if (vsi->netdev) {
1892                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1893                 vsi->current_netdev_flags = vsi->netdev->flags;
1894         }
1895
1896         INIT_LIST_HEAD(&tmp_del_list);
1897         INIT_LIST_HEAD(&tmp_add_list);
1898
1899         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1900                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1901
1902                 spin_lock_bh(&vsi->mac_filter_list_lock);
1903                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1904                         if (!f->changed)
1905                                 continue;
1906
1907                         if (f->counter != 0)
1908                                 continue;
1909                         f->changed = false;
1910
1911                         /* Move the element into temporary del_list */
1912                         list_move_tail(&f->list, &tmp_del_list);
1913                 }
1914
1915                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1916                         if (!f->changed)
1917                                 continue;
1918
1919                         if (f->counter == 0)
1920                                 continue;
1921                         f->changed = false;
1922
1923                         /* Clone MAC filter entry and add into temporary list */
1924                         fclone = i40e_mac_filter_entry_clone(f);
1925                         if (!fclone) {
1926                                 err_cond = true;
1927                                 break;
1928                         }
1929                         list_add_tail(&fclone->list, &tmp_add_list);
1930                 }
1931
1932                 /* if failed to clone MAC filter entry - undo */
1933                 if (err_cond) {
1934                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1935                         i40e_undo_add_filter_entries(vsi);
1936                 }
1937                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1938
1939                 if (err_cond)
1940                         i40e_cleanup_add_list(&tmp_add_list);
1941         }
1942
1943         /* Now process 'del_list' outside the lock */
1944         if (!list_empty(&tmp_del_list)) {
1945                 filter_list_len = pf->hw.aq.asq_buf_size /
1946                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1947                 del_list = kcalloc(filter_list_len,
1948                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1949                             GFP_KERNEL);
1950                 if (!del_list) {
1951                         i40e_cleanup_add_list(&tmp_add_list);
1952
1953                         /* Undo VSI's MAC filter entry element updates */
1954                         spin_lock_bh(&vsi->mac_filter_list_lock);
1955                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1956                         i40e_undo_add_filter_entries(vsi);
1957                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1958                         return -ENOMEM;
1959                 }
1960
1961                 list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
1962                         cmd_flags = 0;
1963
1964                         /* add to delete list */
1965                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1966                         del_list[num_del].vlan_tag =
1967                                 cpu_to_le16((u16)(f->vlan ==
1968                                             I40E_VLAN_ANY ? 0 : f->vlan));
1969
1970                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1971                         del_list[num_del].flags = cmd_flags;
1972                         num_del++;
1973
1974                         /* flush a full buffer */
1975                         if (num_del == filter_list_len) {
1976                                 ret = i40e_aq_remove_macvlan(&pf->hw,
1977                                                   vsi->seid, del_list, num_del,
1978                                                   NULL);
1979                                 aq_err = pf->hw.aq.asq_last_status;
1980                                 num_del = 0;
1981                                 memset(del_list, 0, sizeof(*del_list));
1982
1983                                 if (ret && aq_err != I40E_AQ_RC_ENOENT)
1984                                         dev_err(&pf->pdev->dev,
1985                                                 "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1986                                                 i40e_stat_str(&pf->hw, ret),
1987                                                 i40e_aq_str(&pf->hw, aq_err));
1988                         }
1989                         /* Release memory for MAC filter entries which were
1990                          * synced up with HW.
1991                          */
1992                         list_del(&f->list);
1993                         kfree(f);
1994                 }
1995
1996                 if (num_del) {
1997                         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1998                                                      del_list, num_del, NULL);
1999                         aq_err = pf->hw.aq.asq_last_status;
2000                         num_del = 0;
2001
2002                         if (ret && aq_err != I40E_AQ_RC_ENOENT)
2003                                 dev_info(&pf->pdev->dev,
2004                                          "ignoring delete macvlan error, err %s aq_err %s\n",
2005                                          i40e_stat_str(&pf->hw, ret),
2006                                          i40e_aq_str(&pf->hw, aq_err));
2007                 }
2008
2009                 kfree(del_list);
2010                 del_list = NULL;
2011         }
2012
2013         if (!list_empty(&tmp_add_list)) {
2014
2015                 /* do all the adds now */
2016                 filter_list_len = pf->hw.aq.asq_buf_size /
2017                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2018                 add_list = kcalloc(filter_list_len,
2019                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2020                                GFP_KERNEL);
2021                 if (!add_list) {
2022                         /* Purge element from temporary lists */
2023                         i40e_cleanup_add_list(&tmp_add_list);
2024
2025                         /* Undo add filter entries from VSI MAC filter list */
2026                         spin_lock_bh(&vsi->mac_filter_list_lock);
2027                         i40e_undo_add_filter_entries(vsi);
2028                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2029                         return -ENOMEM;
2030                 }
2031
2032                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
2033
2034                         add_happened = true;
2035                         cmd_flags = 0;
2036
2037                         /* add to add array */
2038                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
2039                         add_list[num_add].vlan_tag =
2040                                 cpu_to_le16(
2041                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
2042                         add_list[num_add].queue_number = 0;
2043
2044                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2045                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2046                         num_add++;
2047
2048                         /* flush a full buffer */
2049                         if (num_add == filter_list_len) {
2050                                 ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2051                                                           add_list, num_add,
2052                                                           NULL);
2053                                 aq_err = pf->hw.aq.asq_last_status;
2054                                 num_add = 0;
2055
2056                                 if (ret)
2057                                         break;
2058                                 memset(add_list, 0, sizeof(*add_list));
2059                         }
2060                         /* Entries from tmp_add_list were cloned from MAC
2061                          * filter list, hence clean those cloned entries
2062                          */
2063                         list_del(&f->list);
2064                         kfree(f);
2065                 }
2066
2067                 if (num_add) {
2068                         ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2069                                                   add_list, num_add, NULL);
2070                         aq_err = pf->hw.aq.asq_last_status;
2071                         num_add = 0;
2072                 }
2073                 kfree(add_list);
2074                 add_list = NULL;
2075
2076                 if (add_happened && ret && aq_err != I40E_AQ_RC_EINVAL) {
2077                         dev_info(&pf->pdev->dev,
2078                                  "add filter failed, err %s aq_err %s\n",
2079                                  i40e_stat_str(&pf->hw, ret),
2080                                  i40e_aq_str(&pf->hw, aq_err));
2081                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
2082                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2083                                       &vsi->state)) {
2084                                 promisc_forced_on = true;
2085                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2086                                         &vsi->state);
2087                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
2088                         }
2089                 }
2090         }
2091
2092         /* check for changes in promiscuous modes */
2093         if (changed_flags & IFF_ALLMULTI) {
2094                 bool cur_multipromisc;
2095
2096                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2097                 ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2098                                                             vsi->seid,
2099                                                             cur_multipromisc,
2100                                                             NULL);
2101                 if (ret)
2102                         dev_info(&pf->pdev->dev,
2103                                  "set multi promisc failed, err %s aq_err %s\n",
2104                                  i40e_stat_str(&pf->hw, ret),
2105                                  i40e_aq_str(&pf->hw,
2106                                              pf->hw.aq.asq_last_status));
2107         }
2108         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
2109                 bool cur_promisc;
2110
2111                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2112                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2113                                         &vsi->state));
2114                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
2115                         /* set defport ON for Main VSI instead of true promisc
2116                          * this way we will get all unicast/multicast and VLAN
2117                          * promisc behavior but will not get VF or VMDq traffic
2118                          * replicated on the Main VSI.
2119                          */
2120                         if (pf->cur_promisc != cur_promisc) {
2121                                 pf->cur_promisc = cur_promisc;
2122                                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2123                         }
2124                 } else {
2125                         ret = i40e_aq_set_vsi_unicast_promiscuous(
2126                                                           &vsi->back->hw,
2127                                                           vsi->seid,
2128                                                           cur_promisc, NULL);
2129                         if (ret)
2130                                 dev_info(&pf->pdev->dev,
2131                                          "set unicast promisc failed, err %d, aq_err %d\n",
2132                                          ret, pf->hw.aq.asq_last_status);
2133                         ret = i40e_aq_set_vsi_multicast_promiscuous(
2134                                                           &vsi->back->hw,
2135                                                           vsi->seid,
2136                                                           cur_promisc, NULL);
2137                         if (ret)
2138                                 dev_info(&pf->pdev->dev,
2139                                          "set multicast promisc failed, err %d, aq_err %d\n",
2140                                          ret, pf->hw.aq.asq_last_status);
2141                 }
2142                 ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2143                                                 vsi->seid,
2144                                                 cur_promisc, NULL);
2145                 if (ret)
2146                         dev_info(&pf->pdev->dev,
2147                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2148                                  i40e_stat_str(&pf->hw, ret),
2149                                  i40e_aq_str(&pf->hw,
2150                                              pf->hw.aq.asq_last_status));
2151         }
2152
2153         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2154         return 0;
2155 }
2156
2157 /**
2158  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2159  * @pf: board private structure
2160  **/
2161 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2162 {
2163         int v;
2164
2165         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2166                 return;
2167         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2168
2169         for (v = 0; v < pf->num_alloc_vsi; v++) {
2170                 if (pf->vsi[v] &&
2171                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2172                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2173
2174                         if (ret) {
2175                                 /* come back and try again later */
2176                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2177                                 break;
2178                         }
2179                 }
2180         }
2181 }
2182
2183 /**
2184  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2185  * @netdev: network interface device structure
2186  * @new_mtu: new value for maximum frame size
2187  *
2188  * Returns 0 on success, negative on failure
2189  **/
2190 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2191 {
2192         struct i40e_netdev_priv *np = netdev_priv(netdev);
2193         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2194         struct i40e_vsi *vsi = np->vsi;
2195
2196         /* MTU < 68 is an error and causes problems on some kernels */
2197         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2198                 return -EINVAL;
2199
2200         netdev_info(netdev, "changing MTU from %d to %d\n",
2201                     netdev->mtu, new_mtu);
2202         netdev->mtu = new_mtu;
2203         if (netif_running(netdev))
2204                 i40e_vsi_reinit_locked(vsi);
2205
2206         return 0;
2207 }
2208
2209 /**
2210  * i40e_ioctl - Access the hwtstamp interface
2211  * @netdev: network interface device structure
2212  * @ifr: interface request data
2213  * @cmd: ioctl command
2214  **/
2215 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2216 {
2217         struct i40e_netdev_priv *np = netdev_priv(netdev);
2218         struct i40e_pf *pf = np->vsi->back;
2219
2220         switch (cmd) {
2221         case SIOCGHWTSTAMP:
2222                 return i40e_ptp_get_ts_config(pf, ifr);
2223         case SIOCSHWTSTAMP:
2224                 return i40e_ptp_set_ts_config(pf, ifr);
2225         default:
2226                 return -EOPNOTSUPP;
2227         }
2228 }
2229
2230 /**
2231  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2232  * @vsi: the vsi being adjusted
2233  **/
2234 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2235 {
2236         struct i40e_vsi_context ctxt;
2237         i40e_status ret;
2238
2239         if ((vsi->info.valid_sections &
2240              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2241             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2242                 return;  /* already enabled */
2243
2244         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2245         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2246                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2247
2248         ctxt.seid = vsi->seid;
2249         ctxt.info = vsi->info;
2250         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2251         if (ret) {
2252                 dev_info(&vsi->back->pdev->dev,
2253                          "update vlan stripping failed, err %s aq_err %s\n",
2254                          i40e_stat_str(&vsi->back->hw, ret),
2255                          i40e_aq_str(&vsi->back->hw,
2256                                      vsi->back->hw.aq.asq_last_status));
2257         }
2258 }
2259
2260 /**
2261  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2262  * @vsi: the vsi being adjusted
2263  **/
2264 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2265 {
2266         struct i40e_vsi_context ctxt;
2267         i40e_status ret;
2268
2269         if ((vsi->info.valid_sections &
2270              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2271             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2272              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2273                 return;  /* already disabled */
2274
2275         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2276         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2277                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2278
2279         ctxt.seid = vsi->seid;
2280         ctxt.info = vsi->info;
2281         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2282         if (ret) {
2283                 dev_info(&vsi->back->pdev->dev,
2284                          "update vlan stripping failed, err %s aq_err %s\n",
2285                          i40e_stat_str(&vsi->back->hw, ret),
2286                          i40e_aq_str(&vsi->back->hw,
2287                                      vsi->back->hw.aq.asq_last_status));
2288         }
2289 }
2290
2291 /**
2292  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2293  * @netdev: network interface to be adjusted
2294  * @features: netdev features to test if VLAN offload is enabled or not
2295  **/
2296 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2297 {
2298         struct i40e_netdev_priv *np = netdev_priv(netdev);
2299         struct i40e_vsi *vsi = np->vsi;
2300
2301         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2302                 i40e_vlan_stripping_enable(vsi);
2303         else
2304                 i40e_vlan_stripping_disable(vsi);
2305 }
2306
2307 /**
2308  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2309  * @vsi: the vsi being configured
2310  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2311  **/
2312 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2313 {
2314         struct i40e_mac_filter *f, *add_f;
2315         bool is_netdev, is_vf;
2316
2317         is_vf = (vsi->type == I40E_VSI_SRIOV);
2318         is_netdev = !!(vsi->netdev);
2319
2320         /* Locked once because all functions invoked below iterates list*/
2321         spin_lock_bh(&vsi->mac_filter_list_lock);
2322
2323         if (is_netdev) {
2324                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2325                                         is_vf, is_netdev);
2326                 if (!add_f) {
2327                         dev_info(&vsi->back->pdev->dev,
2328                                  "Could not add vlan filter %d for %pM\n",
2329                                  vid, vsi->netdev->dev_addr);
2330                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2331                         return -ENOMEM;
2332                 }
2333         }
2334
2335         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2336                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2337                 if (!add_f) {
2338                         dev_info(&vsi->back->pdev->dev,
2339                                  "Could not add vlan filter %d for %pM\n",
2340                                  vid, f->macaddr);
2341                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2342                         return -ENOMEM;
2343                 }
2344         }
2345
2346         /* Now if we add a vlan tag, make sure to check if it is the first
2347          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2348          * with 0, so we now accept untagged and specified tagged traffic
2349          * (and not any taged and untagged)
2350          */
2351         if (vid > 0) {
2352                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2353                                                   I40E_VLAN_ANY,
2354                                                   is_vf, is_netdev)) {
2355                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2356                                         I40E_VLAN_ANY, is_vf, is_netdev);
2357                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2358                                                 is_vf, is_netdev);
2359                         if (!add_f) {
2360                                 dev_info(&vsi->back->pdev->dev,
2361                                          "Could not add filter 0 for %pM\n",
2362                                          vsi->netdev->dev_addr);
2363                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2364                                 return -ENOMEM;
2365                         }
2366                 }
2367         }
2368
2369         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2370         if (vid > 0 && !vsi->info.pvid) {
2371                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2372                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2373                                               is_vf, is_netdev))
2374                                 continue;
2375                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2376                                         is_vf, is_netdev);
2377                         add_f = i40e_add_filter(vsi, f->macaddr,
2378                                                 0, is_vf, is_netdev);
2379                         if (!add_f) {
2380                                 dev_info(&vsi->back->pdev->dev,
2381                                          "Could not add filter 0 for %pM\n",
2382                                         f->macaddr);
2383                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2384                                 return -ENOMEM;
2385                         }
2386                 }
2387         }
2388
2389         spin_unlock_bh(&vsi->mac_filter_list_lock);
2390
2391         /* schedule our worker thread which will take care of
2392          * applying the new filter changes
2393          */
2394         i40e_service_event_schedule(vsi->back);
2395         return 0;
2396 }
2397
2398 /**
2399  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2400  * @vsi: the vsi being configured
2401  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2402  *
2403  * Return: 0 on success or negative otherwise
2404  **/
2405 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2406 {
2407         struct net_device *netdev = vsi->netdev;
2408         struct i40e_mac_filter *f, *add_f;
2409         bool is_vf, is_netdev;
2410         int filter_count = 0;
2411
2412         is_vf = (vsi->type == I40E_VSI_SRIOV);
2413         is_netdev = !!(netdev);
2414
2415         /* Locked once because all functions invoked below iterates list */
2416         spin_lock_bh(&vsi->mac_filter_list_lock);
2417
2418         if (is_netdev)
2419                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2420
2421         list_for_each_entry(f, &vsi->mac_filter_list, list)
2422                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2423
2424         /* go through all the filters for this VSI and if there is only
2425          * vid == 0 it means there are no other filters, so vid 0 must
2426          * be replaced with -1. This signifies that we should from now
2427          * on accept any traffic (with any tag present, or untagged)
2428          */
2429         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2430                 if (is_netdev) {
2431                         if (f->vlan &&
2432                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2433                                 filter_count++;
2434                 }
2435
2436                 if (f->vlan)
2437                         filter_count++;
2438         }
2439
2440         if (!filter_count && is_netdev) {
2441                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2442                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2443                                     is_vf, is_netdev);
2444                 if (!f) {
2445                         dev_info(&vsi->back->pdev->dev,
2446                                  "Could not add filter %d for %pM\n",
2447                                  I40E_VLAN_ANY, netdev->dev_addr);
2448                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2449                         return -ENOMEM;
2450                 }
2451         }
2452
2453         if (!filter_count) {
2454                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2455                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2456                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2457                                                 is_vf, is_netdev);
2458                         if (!add_f) {
2459                                 dev_info(&vsi->back->pdev->dev,
2460                                          "Could not add filter %d for %pM\n",
2461                                          I40E_VLAN_ANY, f->macaddr);
2462                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2463                                 return -ENOMEM;
2464                         }
2465                 }
2466         }
2467
2468         spin_unlock_bh(&vsi->mac_filter_list_lock);
2469
2470         /* schedule our worker thread which will take care of
2471          * applying the new filter changes
2472          */
2473         i40e_service_event_schedule(vsi->back);
2474         return 0;
2475 }
2476
2477 /**
2478  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2479  * @netdev: network interface to be adjusted
2480  * @vid: vlan id to be added
2481  *
2482  * net_device_ops implementation for adding vlan ids
2483  **/
2484 #ifdef I40E_FCOE
2485 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2486                          __always_unused __be16 proto, u16 vid)
2487 #else
2488 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2489                                 __always_unused __be16 proto, u16 vid)
2490 #endif
2491 {
2492         struct i40e_netdev_priv *np = netdev_priv(netdev);
2493         struct i40e_vsi *vsi = np->vsi;
2494         int ret = 0;
2495
2496         if (vid > 4095)
2497                 return -EINVAL;
2498
2499         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2500
2501         /* If the network stack called us with vid = 0 then
2502          * it is asking to receive priority tagged packets with
2503          * vlan id 0.  Our HW receives them by default when configured
2504          * to receive untagged packets so there is no need to add an
2505          * extra filter for vlan 0 tagged packets.
2506          */
2507         if (vid)
2508                 ret = i40e_vsi_add_vlan(vsi, vid);
2509
2510         if (!ret && (vid < VLAN_N_VID))
2511                 set_bit(vid, vsi->active_vlans);
2512
2513         return ret;
2514 }
2515
2516 /**
2517  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2518  * @netdev: network interface to be adjusted
2519  * @vid: vlan id to be removed
2520  *
2521  * net_device_ops implementation for removing vlan ids
2522  **/
2523 #ifdef I40E_FCOE
2524 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2525                           __always_unused __be16 proto, u16 vid)
2526 #else
2527 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2528                                  __always_unused __be16 proto, u16 vid)
2529 #endif
2530 {
2531         struct i40e_netdev_priv *np = netdev_priv(netdev);
2532         struct i40e_vsi *vsi = np->vsi;
2533
2534         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2535
2536         /* return code is ignored as there is nothing a user
2537          * can do about failure to remove and a log message was
2538          * already printed from the other function
2539          */
2540         i40e_vsi_kill_vlan(vsi, vid);
2541
2542         clear_bit(vid, vsi->active_vlans);
2543
2544         return 0;
2545 }
2546
2547 /**
2548  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2549  * @vsi: the vsi being brought back up
2550  **/
2551 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2552 {
2553         u16 vid;
2554
2555         if (!vsi->netdev)
2556                 return;
2557
2558         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2559
2560         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2561                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2562                                      vid);
2563 }
2564
2565 /**
2566  * i40e_vsi_add_pvid - Add pvid for the VSI
2567  * @vsi: the vsi being adjusted
2568  * @vid: the vlan id to set as a PVID
2569  **/
2570 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2571 {
2572         struct i40e_vsi_context ctxt;
2573         i40e_status ret;
2574
2575         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2576         vsi->info.pvid = cpu_to_le16(vid);
2577         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2578                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2579                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2580
2581         ctxt.seid = vsi->seid;
2582         ctxt.info = vsi->info;
2583         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2584         if (ret) {
2585                 dev_info(&vsi->back->pdev->dev,
2586                          "add pvid failed, err %s aq_err %s\n",
2587                          i40e_stat_str(&vsi->back->hw, ret),
2588                          i40e_aq_str(&vsi->back->hw,
2589                                      vsi->back->hw.aq.asq_last_status));
2590                 return -ENOENT;
2591         }
2592
2593         return 0;
2594 }
2595
2596 /**
2597  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2598  * @vsi: the vsi being adjusted
2599  *
2600  * Just use the vlan_rx_register() service to put it back to normal
2601  **/
2602 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2603 {
2604         i40e_vlan_stripping_disable(vsi);
2605
2606         vsi->info.pvid = 0;
2607 }
2608
2609 /**
2610  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2611  * @vsi: ptr to the VSI
2612  *
2613  * If this function returns with an error, then it's possible one or
2614  * more of the rings is populated (while the rest are not).  It is the
2615  * callers duty to clean those orphaned rings.
2616  *
2617  * Return 0 on success, negative on failure
2618  **/
2619 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2620 {
2621         int i, err = 0;
2622
2623         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2624                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2625
2626         return err;
2627 }
2628
2629 /**
2630  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2631  * @vsi: ptr to the VSI
2632  *
2633  * Free VSI's transmit software resources
2634  **/
2635 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2636 {
2637         int i;
2638
2639         if (!vsi->tx_rings)
2640                 return;
2641
2642         for (i = 0; i < vsi->num_queue_pairs; i++)
2643                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2644                         i40e_free_tx_resources(vsi->tx_rings[i]);
2645 }
2646
2647 /**
2648  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2649  * @vsi: ptr to the VSI
2650  *
2651  * If this function returns with an error, then it's possible one or
2652  * more of the rings is populated (while the rest are not).  It is the
2653  * callers duty to clean those orphaned rings.
2654  *
2655  * Return 0 on success, negative on failure
2656  **/
2657 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2658 {
2659         int i, err = 0;
2660
2661         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2662                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2663 #ifdef I40E_FCOE
2664         i40e_fcoe_setup_ddp_resources(vsi);
2665 #endif
2666         return err;
2667 }
2668
2669 /**
2670  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2671  * @vsi: ptr to the VSI
2672  *
2673  * Free all receive software resources
2674  **/
2675 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2676 {
2677         int i;
2678
2679         if (!vsi->rx_rings)
2680                 return;
2681
2682         for (i = 0; i < vsi->num_queue_pairs; i++)
2683                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2684                         i40e_free_rx_resources(vsi->rx_rings[i]);
2685 #ifdef I40E_FCOE
2686         i40e_fcoe_free_ddp_resources(vsi);
2687 #endif
2688 }
2689
2690 /**
2691  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2692  * @ring: The Tx ring to configure
2693  *
2694  * This enables/disables XPS for a given Tx descriptor ring
2695  * based on the TCs enabled for the VSI that ring belongs to.
2696  **/
2697 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2698 {
2699         struct i40e_vsi *vsi = ring->vsi;
2700         cpumask_var_t mask;
2701
2702         if (!ring->q_vector || !ring->netdev)
2703                 return;
2704
2705         /* Single TC mode enable XPS */
2706         if (vsi->tc_config.numtc <= 1) {
2707                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2708                         netif_set_xps_queue(ring->netdev,
2709                                             &ring->q_vector->affinity_mask,
2710                                             ring->queue_index);
2711         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2712                 /* Disable XPS to allow selection based on TC */
2713                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2714                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2715                 free_cpumask_var(mask);
2716         }
2717
2718         /* schedule our worker thread which will take care of
2719          * applying the new filter changes
2720          */
2721         i40e_service_event_schedule(vsi->back);
2722 }
2723
2724 /**
2725  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2726  * @ring: The Tx ring to configure
2727  *
2728  * Configure the Tx descriptor ring in the HMC context.
2729  **/
2730 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2731 {
2732         struct i40e_vsi *vsi = ring->vsi;
2733         u16 pf_q = vsi->base_queue + ring->queue_index;
2734         struct i40e_hw *hw = &vsi->back->hw;
2735         struct i40e_hmc_obj_txq tx_ctx;
2736         i40e_status err = 0;
2737         u32 qtx_ctl = 0;
2738
2739         /* some ATR related tx ring init */
2740         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2741                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2742                 ring->atr_count = 0;
2743         } else {
2744                 ring->atr_sample_rate = 0;
2745         }
2746
2747         /* configure XPS */
2748         i40e_config_xps_tx_ring(ring);
2749
2750         /* clear the context structure first */
2751         memset(&tx_ctx, 0, sizeof(tx_ctx));
2752
2753         tx_ctx.new_context = 1;
2754         tx_ctx.base = (ring->dma / 128);
2755         tx_ctx.qlen = ring->count;
2756         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2757                                                I40E_FLAG_FD_ATR_ENABLED));
2758 #ifdef I40E_FCOE
2759         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2760 #endif
2761         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2762         /* FDIR VSI tx ring can still use RS bit and writebacks */
2763         if (vsi->type != I40E_VSI_FDIR)
2764                 tx_ctx.head_wb_ena = 1;
2765         tx_ctx.head_wb_addr = ring->dma +
2766                               (ring->count * sizeof(struct i40e_tx_desc));
2767
2768         /* As part of VSI creation/update, FW allocates certain
2769          * Tx arbitration queue sets for each TC enabled for
2770          * the VSI. The FW returns the handles to these queue
2771          * sets as part of the response buffer to Add VSI,
2772          * Update VSI, etc. AQ commands. It is expected that
2773          * these queue set handles be associated with the Tx
2774          * queues by the driver as part of the TX queue context
2775          * initialization. This has to be done regardless of
2776          * DCB as by default everything is mapped to TC0.
2777          */
2778         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2779         tx_ctx.rdylist_act = 0;
2780
2781         /* clear the context in the HMC */
2782         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2783         if (err) {
2784                 dev_info(&vsi->back->pdev->dev,
2785                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2786                          ring->queue_index, pf_q, err);
2787                 return -ENOMEM;
2788         }
2789
2790         /* set the context in the HMC */
2791         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2792         if (err) {
2793                 dev_info(&vsi->back->pdev->dev,
2794                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2795                          ring->queue_index, pf_q, err);
2796                 return -ENOMEM;
2797         }
2798
2799         /* Now associate this queue with this PCI function */
2800         if (vsi->type == I40E_VSI_VMDQ2) {
2801                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2802                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2803                            I40E_QTX_CTL_VFVM_INDX_MASK;
2804         } else {
2805                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2806         }
2807
2808         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2809                     I40E_QTX_CTL_PF_INDX_MASK);
2810         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2811         i40e_flush(hw);
2812
2813         /* cache tail off for easier writes later */
2814         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2815
2816         return 0;
2817 }
2818
2819 /**
2820  * i40e_configure_rx_ring - Configure a receive ring context
2821  * @ring: The Rx ring to configure
2822  *
2823  * Configure the Rx descriptor ring in the HMC context.
2824  **/
2825 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2826 {
2827         struct i40e_vsi *vsi = ring->vsi;
2828         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2829         u16 pf_q = vsi->base_queue + ring->queue_index;
2830         struct i40e_hw *hw = &vsi->back->hw;
2831         struct i40e_hmc_obj_rxq rx_ctx;
2832         i40e_status err = 0;
2833
2834         ring->state = 0;
2835
2836         /* clear the context structure first */
2837         memset(&rx_ctx, 0, sizeof(rx_ctx));
2838
2839         ring->rx_buf_len = vsi->rx_buf_len;
2840         ring->rx_hdr_len = vsi->rx_hdr_len;
2841
2842         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2843         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2844
2845         rx_ctx.base = (ring->dma / 128);
2846         rx_ctx.qlen = ring->count;
2847
2848         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2849                 set_ring_16byte_desc_enabled(ring);
2850                 rx_ctx.dsize = 0;
2851         } else {
2852                 rx_ctx.dsize = 1;
2853         }
2854
2855         rx_ctx.dtype = vsi->dtype;
2856         if (vsi->dtype) {
2857                 set_ring_ps_enabled(ring);
2858                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2859                                   I40E_RX_SPLIT_IP      |
2860                                   I40E_RX_SPLIT_TCP_UDP |
2861                                   I40E_RX_SPLIT_SCTP;
2862         } else {
2863                 rx_ctx.hsplit_0 = 0;
2864         }
2865
2866         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2867                                   (chain_len * ring->rx_buf_len));
2868         if (hw->revision_id == 0)
2869                 rx_ctx.lrxqthresh = 0;
2870         else
2871                 rx_ctx.lrxqthresh = 2;
2872         rx_ctx.crcstrip = 1;
2873         rx_ctx.l2tsel = 1;
2874         /* this controls whether VLAN is stripped from inner headers */
2875         rx_ctx.showiv = 0;
2876 #ifdef I40E_FCOE
2877         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2878 #endif
2879         /* set the prefena field to 1 because the manual says to */
2880         rx_ctx.prefena = 1;
2881
2882         /* clear the context in the HMC */
2883         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2884         if (err) {
2885                 dev_info(&vsi->back->pdev->dev,
2886                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2887                          ring->queue_index, pf_q, err);
2888                 return -ENOMEM;
2889         }
2890
2891         /* set the context in the HMC */
2892         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2893         if (err) {
2894                 dev_info(&vsi->back->pdev->dev,
2895                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2896                          ring->queue_index, pf_q, err);
2897                 return -ENOMEM;
2898         }
2899
2900         /* cache tail for quicker writes, and clear the reg before use */
2901         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2902         writel(0, ring->tail);
2903
2904         if (ring_is_ps_enabled(ring)) {
2905                 i40e_alloc_rx_headers(ring);
2906                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2907         } else {
2908                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2909         }
2910
2911         return 0;
2912 }
2913
2914 /**
2915  * i40e_vsi_configure_tx - Configure the VSI for Tx
2916  * @vsi: VSI structure describing this set of rings and resources
2917  *
2918  * Configure the Tx VSI for operation.
2919  **/
2920 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2921 {
2922         int err = 0;
2923         u16 i;
2924
2925         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2926                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2927
2928         return err;
2929 }
2930
2931 /**
2932  * i40e_vsi_configure_rx - Configure the VSI for Rx
2933  * @vsi: the VSI being configured
2934  *
2935  * Configure the Rx VSI for operation.
2936  **/
2937 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2938 {
2939         int err = 0;
2940         u16 i;
2941
2942         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2943                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2944                                + ETH_FCS_LEN + VLAN_HLEN;
2945         else
2946                 vsi->max_frame = I40E_RXBUFFER_2048;
2947
2948         /* figure out correct receive buffer length */
2949         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2950                                     I40E_FLAG_RX_PS_ENABLED)) {
2951         case I40E_FLAG_RX_1BUF_ENABLED:
2952                 vsi->rx_hdr_len = 0;
2953                 vsi->rx_buf_len = vsi->max_frame;
2954                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2955                 break;
2956         case I40E_FLAG_RX_PS_ENABLED:
2957                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2958                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2959                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2960                 break;
2961         default:
2962                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2963                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2964                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2965                 break;
2966         }
2967
2968 #ifdef I40E_FCOE
2969         /* setup rx buffer for FCoE */
2970         if ((vsi->type == I40E_VSI_FCOE) &&
2971             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2972                 vsi->rx_hdr_len = 0;
2973                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2974                 vsi->max_frame = I40E_RXBUFFER_3072;
2975                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2976         }
2977
2978 #endif /* I40E_FCOE */
2979         /* round up for the chip's needs */
2980         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2981                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2982         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2983                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2984
2985         /* set up individual rings */
2986         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2987                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2988
2989         return err;
2990 }
2991
2992 /**
2993  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2994  * @vsi: ptr to the VSI
2995  **/
2996 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2997 {
2998         struct i40e_ring *tx_ring, *rx_ring;
2999         u16 qoffset, qcount;
3000         int i, n;
3001
3002         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3003                 /* Reset the TC information */
3004                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3005                         rx_ring = vsi->rx_rings[i];
3006                         tx_ring = vsi->tx_rings[i];
3007                         rx_ring->dcb_tc = 0;
3008                         tx_ring->dcb_tc = 0;
3009                 }
3010         }
3011
3012         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3013                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3014                         continue;
3015
3016                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3017                 qcount = vsi->tc_config.tc_info[n].qcount;
3018                 for (i = qoffset; i < (qoffset + qcount); i++) {
3019                         rx_ring = vsi->rx_rings[i];
3020                         tx_ring = vsi->tx_rings[i];
3021                         rx_ring->dcb_tc = n;
3022                         tx_ring->dcb_tc = n;
3023                 }
3024         }
3025 }
3026
3027 /**
3028  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3029  * @vsi: ptr to the VSI
3030  **/
3031 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3032 {
3033         if (vsi->netdev)
3034                 i40e_set_rx_mode(vsi->netdev);
3035 }
3036
3037 /**
3038  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3039  * @vsi: Pointer to the targeted VSI
3040  *
3041  * This function replays the hlist on the hw where all the SB Flow Director
3042  * filters were saved.
3043  **/
3044 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3045 {
3046         struct i40e_fdir_filter *filter;
3047         struct i40e_pf *pf = vsi->back;
3048         struct hlist_node *node;
3049
3050         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3051                 return;
3052
3053         hlist_for_each_entry_safe(filter, node,
3054                                   &pf->fdir_filter_list, fdir_node) {
3055                 i40e_add_del_fdir(vsi, filter, true);
3056         }
3057 }
3058
3059 /**
3060  * i40e_vsi_configure - Set up the VSI for action
3061  * @vsi: the VSI being configured
3062  **/
3063 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3064 {
3065         int err;
3066
3067         i40e_set_vsi_rx_mode(vsi);
3068         i40e_restore_vlan(vsi);
3069         i40e_vsi_config_dcb_rings(vsi);
3070         err = i40e_vsi_configure_tx(vsi);
3071         if (!err)
3072                 err = i40e_vsi_configure_rx(vsi);
3073
3074         return err;
3075 }
3076
3077 /**
3078  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3079  * @vsi: the VSI being configured
3080  **/
3081 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3082 {
3083         struct i40e_pf *pf = vsi->back;
3084         struct i40e_hw *hw = &pf->hw;
3085         u16 vector;
3086         int i, q;
3087         u32 qp;
3088
3089         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3090          * and PFINT_LNKLSTn registers, e.g.:
3091          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3092          */
3093         qp = vsi->base_queue;
3094         vector = vsi->base_vector;
3095         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3096                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3097
3098                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3099                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3100                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3101                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3102                      q_vector->rx.itr);
3103                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3104                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3105                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3106                      q_vector->tx.itr);
3107                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3108                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3109
3110                 /* Linked list for the queuepairs assigned to this vector */
3111                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3112                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3113                         u32 val;
3114
3115                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3116                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3117                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3118                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3119                               (I40E_QUEUE_TYPE_TX
3120                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3121
3122                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3123
3124                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3125                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3126                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3127                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3128                               (I40E_QUEUE_TYPE_RX
3129                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3130
3131                         /* Terminate the linked list */
3132                         if (q == (q_vector->num_ringpairs - 1))
3133                                 val |= (I40E_QUEUE_END_OF_LIST
3134                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3135
3136                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3137                         qp++;
3138                 }
3139         }
3140
3141         i40e_flush(hw);
3142 }
3143
3144 /**
3145  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3146  * @hw: ptr to the hardware info
3147  **/
3148 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3149 {
3150         struct i40e_hw *hw = &pf->hw;
3151         u32 val;
3152
3153         /* clear things first */
3154         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3155         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3156
3157         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3158               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3159               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3160               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3161               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3162               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3163               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3164               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3165
3166         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3167                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3168
3169         if (pf->flags & I40E_FLAG_PTP)
3170                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3171
3172         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3173
3174         /* SW_ITR_IDX = 0, but don't change INTENA */
3175         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3176                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3177
3178         /* OTHER_ITR_IDX = 0 */
3179         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3180 }
3181
3182 /**
3183  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3184  * @vsi: the VSI being configured
3185  **/
3186 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3187 {
3188         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3189         struct i40e_pf *pf = vsi->back;
3190         struct i40e_hw *hw = &pf->hw;
3191         u32 val;
3192
3193         /* set the ITR configuration */
3194         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3195         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3196         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3197         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3198         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3199         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3200         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3201
3202         i40e_enable_misc_int_causes(pf);
3203
3204         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3205         wr32(hw, I40E_PFINT_LNKLST0, 0);
3206
3207         /* Associate the queue pair to the vector and enable the queue int */
3208         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3209               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3210               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3211
3212         wr32(hw, I40E_QINT_RQCTL(0), val);
3213
3214         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3215               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3216               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3217
3218         wr32(hw, I40E_QINT_TQCTL(0), val);
3219         i40e_flush(hw);
3220 }
3221
3222 /**
3223  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3224  * @pf: board private structure
3225  **/
3226 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3227 {
3228         struct i40e_hw *hw = &pf->hw;
3229
3230         wr32(hw, I40E_PFINT_DYN_CTL0,
3231              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3232         i40e_flush(hw);
3233 }
3234
3235 /**
3236  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3237  * @pf: board private structure
3238  **/
3239 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3240 {
3241         struct i40e_hw *hw = &pf->hw;
3242         u32 val;
3243
3244         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3245               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3246               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3247
3248         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3249         i40e_flush(hw);
3250 }
3251
3252 /**
3253  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3254  * @vsi: pointer to a vsi
3255  * @vector: disable a particular Hw Interrupt vector
3256  **/
3257 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3258 {
3259         struct i40e_pf *pf = vsi->back;
3260         struct i40e_hw *hw = &pf->hw;
3261         u32 val;
3262
3263         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3264         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3265         i40e_flush(hw);
3266 }
3267
3268 /**
3269  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3270  * @irq: interrupt number
3271  * @data: pointer to a q_vector
3272  **/
3273 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3274 {
3275         struct i40e_q_vector *q_vector = data;
3276
3277         if (!q_vector->tx.ring && !q_vector->rx.ring)
3278                 return IRQ_HANDLED;
3279
3280         napi_schedule_irqoff(&q_vector->napi);
3281
3282         return IRQ_HANDLED;
3283 }
3284
3285 /**
3286  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3287  * @vsi: the VSI being configured
3288  * @basename: name for the vector
3289  *
3290  * Allocates MSI-X vectors and requests interrupts from the kernel.
3291  **/
3292 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3293 {
3294         int q_vectors = vsi->num_q_vectors;
3295         struct i40e_pf *pf = vsi->back;
3296         int base = vsi->base_vector;
3297         int rx_int_idx = 0;
3298         int tx_int_idx = 0;
3299         int vector, err;
3300
3301         for (vector = 0; vector < q_vectors; vector++) {
3302                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3303
3304                 if (q_vector->tx.ring && q_vector->rx.ring) {
3305                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3306                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3307                         tx_int_idx++;
3308                 } else if (q_vector->rx.ring) {
3309                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3310                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3311                 } else if (q_vector->tx.ring) {
3312                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3313                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3314                 } else {
3315                         /* skip this unused q_vector */
3316                         continue;
3317                 }
3318                 err = request_irq(pf->msix_entries[base + vector].vector,
3319                                   vsi->irq_handler,
3320                                   0,
3321                                   q_vector->name,
3322                                   q_vector);
3323                 if (err) {
3324                         dev_info(&pf->pdev->dev,
3325                                  "MSIX request_irq failed, error: %d\n", err);
3326                         goto free_queue_irqs;
3327                 }
3328                 /* assign the mask for this irq */
3329                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3330                                       &q_vector->affinity_mask);
3331         }
3332
3333         vsi->irqs_ready = true;
3334         return 0;
3335
3336 free_queue_irqs:
3337         while (vector) {
3338                 vector--;
3339                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3340                                       NULL);
3341                 free_irq(pf->msix_entries[base + vector].vector,
3342                          &(vsi->q_vectors[vector]));
3343         }
3344         return err;
3345 }
3346
3347 /**
3348  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3349  * @vsi: the VSI being un-configured
3350  **/
3351 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3352 {
3353         struct i40e_pf *pf = vsi->back;
3354         struct i40e_hw *hw = &pf->hw;
3355         int base = vsi->base_vector;
3356         int i;
3357
3358         for (i = 0; i < vsi->num_queue_pairs; i++) {
3359                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3360                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3361         }
3362
3363         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3364                 for (i = vsi->base_vector;
3365                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3366                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3367
3368                 i40e_flush(hw);
3369                 for (i = 0; i < vsi->num_q_vectors; i++)
3370                         synchronize_irq(pf->msix_entries[i + base].vector);
3371         } else {
3372                 /* Legacy and MSI mode - this stops all interrupt handling */
3373                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3374                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3375                 i40e_flush(hw);
3376                 synchronize_irq(pf->pdev->irq);
3377         }
3378 }
3379
3380 /**
3381  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3382  * @vsi: the VSI being configured
3383  **/
3384 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3385 {
3386         struct i40e_pf *pf = vsi->back;
3387         int i;
3388
3389         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3390                 for (i = 0; i < vsi->num_q_vectors; i++)
3391                         i40e_irq_dynamic_enable(vsi, i);
3392         } else {
3393                 i40e_irq_dynamic_enable_icr0(pf);
3394         }
3395
3396         i40e_flush(&pf->hw);
3397         return 0;
3398 }
3399
3400 /**
3401  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3402  * @pf: board private structure
3403  **/
3404 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3405 {
3406         /* Disable ICR 0 */
3407         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3408         i40e_flush(&pf->hw);
3409 }
3410
3411 /**
3412  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3413  * @irq: interrupt number
3414  * @data: pointer to a q_vector
3415  *
3416  * This is the handler used for all MSI/Legacy interrupts, and deals
3417  * with both queue and non-queue interrupts.  This is also used in
3418  * MSIX mode to handle the non-queue interrupts.
3419  **/
3420 static irqreturn_t i40e_intr(int irq, void *data)
3421 {
3422         struct i40e_pf *pf = (struct i40e_pf *)data;
3423         struct i40e_hw *hw = &pf->hw;
3424         irqreturn_t ret = IRQ_NONE;
3425         u32 icr0, icr0_remaining;
3426         u32 val, ena_mask;
3427
3428         icr0 = rd32(hw, I40E_PFINT_ICR0);
3429         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3430
3431         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3432         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3433                 goto enable_intr;
3434
3435         /* if interrupt but no bits showing, must be SWINT */
3436         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3437             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3438                 pf->sw_int_count++;
3439
3440         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3441             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3442                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3443                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3444                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3445         }
3446
3447         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3448         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3449                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3450                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3451
3452                 /* temporarily disable queue cause for NAPI processing */
3453                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3454
3455                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3456                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3457
3458                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3459                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3460                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3461
3462                 if (!test_bit(__I40E_DOWN, &pf->state))
3463                         napi_schedule_irqoff(&q_vector->napi);
3464         }
3465
3466         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3467                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3468                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3469         }
3470
3471         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3472                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3473                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3474         }
3475
3476         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3477                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3478                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3479         }
3480
3481         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3482                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3483                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3484                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3485                 val = rd32(hw, I40E_GLGEN_RSTAT);
3486                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3487                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3488                 if (val == I40E_RESET_CORER) {
3489                         pf->corer_count++;
3490                 } else if (val == I40E_RESET_GLOBR) {
3491                         pf->globr_count++;
3492                 } else if (val == I40E_RESET_EMPR) {
3493                         pf->empr_count++;
3494                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3495                 }
3496         }
3497
3498         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3499                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3500                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3501                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3502                          rd32(hw, I40E_PFHMC_ERRORINFO),
3503                          rd32(hw, I40E_PFHMC_ERRORDATA));
3504         }
3505
3506         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3507                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3508
3509                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3510                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3511                         i40e_ptp_tx_hwtstamp(pf);
3512                 }
3513         }
3514
3515         /* If a critical error is pending we have no choice but to reset the
3516          * device.
3517          * Report and mask out any remaining unexpected interrupts.
3518          */
3519         icr0_remaining = icr0 & ena_mask;
3520         if (icr0_remaining) {
3521                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3522                          icr0_remaining);
3523                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3524                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3525                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3526                         dev_info(&pf->pdev->dev, "device will be reset\n");
3527                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3528                         i40e_service_event_schedule(pf);
3529                 }
3530                 ena_mask &= ~icr0_remaining;
3531         }
3532         ret = IRQ_HANDLED;
3533
3534 enable_intr:
3535         /* re-enable interrupt causes */
3536         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3537         if (!test_bit(__I40E_DOWN, &pf->state)) {
3538                 i40e_service_event_schedule(pf);
3539                 i40e_irq_dynamic_enable_icr0(pf);
3540         }
3541
3542         return ret;
3543 }
3544
3545 /**
3546  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3547  * @tx_ring:  tx ring to clean
3548  * @budget:   how many cleans we're allowed
3549  *
3550  * Returns true if there's any budget left (e.g. the clean is finished)
3551  **/
3552 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3553 {
3554         struct i40e_vsi *vsi = tx_ring->vsi;
3555         u16 i = tx_ring->next_to_clean;
3556         struct i40e_tx_buffer *tx_buf;
3557         struct i40e_tx_desc *tx_desc;
3558
3559         tx_buf = &tx_ring->tx_bi[i];
3560         tx_desc = I40E_TX_DESC(tx_ring, i);
3561         i -= tx_ring->count;
3562
3563         do {
3564                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3565
3566                 /* if next_to_watch is not set then there is no work pending */
3567                 if (!eop_desc)
3568                         break;
3569
3570                 /* prevent any other reads prior to eop_desc */
3571                 read_barrier_depends();
3572
3573                 /* if the descriptor isn't done, no work yet to do */
3574                 if (!(eop_desc->cmd_type_offset_bsz &
3575                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3576                         break;
3577
3578                 /* clear next_to_watch to prevent false hangs */
3579                 tx_buf->next_to_watch = NULL;
3580
3581                 tx_desc->buffer_addr = 0;
3582                 tx_desc->cmd_type_offset_bsz = 0;
3583                 /* move past filter desc */
3584                 tx_buf++;
3585                 tx_desc++;
3586                 i++;
3587                 if (unlikely(!i)) {
3588                         i -= tx_ring->count;
3589                         tx_buf = tx_ring->tx_bi;
3590                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3591                 }
3592                 /* unmap skb header data */
3593                 dma_unmap_single(tx_ring->dev,
3594                                  dma_unmap_addr(tx_buf, dma),
3595                                  dma_unmap_len(tx_buf, len),
3596                                  DMA_TO_DEVICE);
3597                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3598                         kfree(tx_buf->raw_buf);
3599
3600                 tx_buf->raw_buf = NULL;
3601                 tx_buf->tx_flags = 0;
3602                 tx_buf->next_to_watch = NULL;
3603                 dma_unmap_len_set(tx_buf, len, 0);
3604                 tx_desc->buffer_addr = 0;
3605                 tx_desc->cmd_type_offset_bsz = 0;
3606
3607                 /* move us past the eop_desc for start of next FD desc */
3608                 tx_buf++;
3609                 tx_desc++;
3610                 i++;
3611                 if (unlikely(!i)) {
3612                         i -= tx_ring->count;
3613                         tx_buf = tx_ring->tx_bi;
3614                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3615                 }
3616
3617                 /* update budget accounting */
3618                 budget--;
3619         } while (likely(budget));
3620
3621         i += tx_ring->count;
3622         tx_ring->next_to_clean = i;
3623
3624         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3625                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3626
3627         return budget > 0;
3628 }
3629
3630 /**
3631  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3632  * @irq: interrupt number
3633  * @data: pointer to a q_vector
3634  **/
3635 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3636 {
3637         struct i40e_q_vector *q_vector = data;
3638         struct i40e_vsi *vsi;
3639
3640         if (!q_vector->tx.ring)
3641                 return IRQ_HANDLED;
3642
3643         vsi = q_vector->tx.ring->vsi;
3644         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3645
3646         return IRQ_HANDLED;
3647 }
3648
3649 /**
3650  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3651  * @vsi: the VSI being configured
3652  * @v_idx: vector index
3653  * @qp_idx: queue pair index
3654  **/
3655 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3656 {
3657         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3658         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3659         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3660
3661         tx_ring->q_vector = q_vector;
3662         tx_ring->next = q_vector->tx.ring;
3663         q_vector->tx.ring = tx_ring;
3664         q_vector->tx.count++;
3665
3666         rx_ring->q_vector = q_vector;
3667         rx_ring->next = q_vector->rx.ring;
3668         q_vector->rx.ring = rx_ring;
3669         q_vector->rx.count++;
3670 }
3671
3672 /**
3673  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3674  * @vsi: the VSI being configured
3675  *
3676  * This function maps descriptor rings to the queue-specific vectors
3677  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3678  * one vector per queue pair, but on a constrained vector budget, we
3679  * group the queue pairs as "efficiently" as possible.
3680  **/
3681 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3682 {
3683         int qp_remaining = vsi->num_queue_pairs;
3684         int q_vectors = vsi->num_q_vectors;
3685         int num_ringpairs;
3686         int v_start = 0;
3687         int qp_idx = 0;
3688
3689         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3690          * group them so there are multiple queues per vector.
3691          * It is also important to go through all the vectors available to be
3692          * sure that if we don't use all the vectors, that the remaining vectors
3693          * are cleared. This is especially important when decreasing the
3694          * number of queues in use.
3695          */
3696         for (; v_start < q_vectors; v_start++) {
3697                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3698
3699                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3700
3701                 q_vector->num_ringpairs = num_ringpairs;
3702
3703                 q_vector->rx.count = 0;
3704                 q_vector->tx.count = 0;
3705                 q_vector->rx.ring = NULL;
3706                 q_vector->tx.ring = NULL;
3707
3708                 while (num_ringpairs--) {
3709                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3710                         qp_idx++;
3711                         qp_remaining--;
3712                 }
3713         }
3714 }
3715
3716 /**
3717  * i40e_vsi_request_irq - Request IRQ from the OS
3718  * @vsi: the VSI being configured
3719  * @basename: name for the vector
3720  **/
3721 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3722 {
3723         struct i40e_pf *pf = vsi->back;
3724         int err;
3725
3726         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3727                 err = i40e_vsi_request_irq_msix(vsi, basename);
3728         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3729                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3730                                   pf->int_name, pf);
3731         else
3732                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3733                                   pf->int_name, pf);
3734
3735         if (err)
3736                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3737
3738         return err;
3739 }
3740
3741 #ifdef CONFIG_NET_POLL_CONTROLLER
3742 /**
3743  * i40e_netpoll - A Polling 'interrupt'handler
3744  * @netdev: network interface device structure
3745  *
3746  * This is used by netconsole to send skbs without having to re-enable
3747  * interrupts.  It's not called while the normal interrupt routine is executing.
3748  **/
3749 #ifdef I40E_FCOE
3750 void i40e_netpoll(struct net_device *netdev)
3751 #else
3752 static void i40e_netpoll(struct net_device *netdev)
3753 #endif
3754 {
3755         struct i40e_netdev_priv *np = netdev_priv(netdev);
3756         struct i40e_vsi *vsi = np->vsi;
3757         struct i40e_pf *pf = vsi->back;
3758         int i;
3759
3760         /* if interface is down do nothing */
3761         if (test_bit(__I40E_DOWN, &vsi->state))
3762                 return;
3763
3764         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3765                 for (i = 0; i < vsi->num_q_vectors; i++)
3766                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3767         } else {
3768                 i40e_intr(pf->pdev->irq, netdev);
3769         }
3770 }
3771 #endif
3772
3773 /**
3774  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3775  * @pf: the PF being configured
3776  * @pf_q: the PF queue
3777  * @enable: enable or disable state of the queue
3778  *
3779  * This routine will wait for the given Tx queue of the PF to reach the
3780  * enabled or disabled state.
3781  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3782  * multiple retries; else will return 0 in case of success.
3783  **/
3784 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3785 {
3786         int i;
3787         u32 tx_reg;
3788
3789         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3790                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3791                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3792                         break;
3793
3794                 usleep_range(10, 20);
3795         }
3796         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3797                 return -ETIMEDOUT;
3798
3799         return 0;
3800 }
3801
3802 /**
3803  * i40e_vsi_control_tx - Start or stop a VSI's rings
3804  * @vsi: the VSI being configured
3805  * @enable: start or stop the rings
3806  **/
3807 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3808 {
3809         struct i40e_pf *pf = vsi->back;
3810         struct i40e_hw *hw = &pf->hw;
3811         int i, j, pf_q, ret = 0;
3812         u32 tx_reg;
3813
3814         pf_q = vsi->base_queue;
3815         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3816
3817                 /* warn the TX unit of coming changes */
3818                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3819                 if (!enable)
3820                         usleep_range(10, 20);
3821
3822                 for (j = 0; j < 50; j++) {
3823                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3824                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3825                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3826                                 break;
3827                         usleep_range(1000, 2000);
3828                 }
3829                 /* Skip if the queue is already in the requested state */
3830                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3831                         continue;
3832
3833                 /* turn on/off the queue */
3834                 if (enable) {
3835                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3836                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3837                 } else {
3838                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3839                 }
3840
3841                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3842                 /* No waiting for the Tx queue to disable */
3843                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3844                         continue;
3845
3846                 /* wait for the change to finish */
3847                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3848                 if (ret) {
3849                         dev_info(&pf->pdev->dev,
3850                                  "VSI seid %d Tx ring %d %sable timeout\n",
3851                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3852                         break;
3853                 }
3854         }
3855
3856         if (hw->revision_id == 0)
3857                 mdelay(50);
3858         return ret;
3859 }
3860
3861 /**
3862  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3863  * @pf: the PF being configured
3864  * @pf_q: the PF queue
3865  * @enable: enable or disable state of the queue
3866  *
3867  * This routine will wait for the given Rx queue of the PF to reach the
3868  * enabled or disabled state.
3869  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3870  * multiple retries; else will return 0 in case of success.
3871  **/
3872 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3873 {
3874         int i;
3875         u32 rx_reg;
3876
3877         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3878                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3879                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3880                         break;
3881
3882                 usleep_range(10, 20);
3883         }
3884         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3885                 return -ETIMEDOUT;
3886
3887         return 0;
3888 }
3889
3890 /**
3891  * i40e_vsi_control_rx - Start or stop a VSI's rings
3892  * @vsi: the VSI being configured
3893  * @enable: start or stop the rings
3894  **/
3895 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3896 {
3897         struct i40e_pf *pf = vsi->back;
3898         struct i40e_hw *hw = &pf->hw;
3899         int i, j, pf_q, ret = 0;
3900         u32 rx_reg;
3901
3902         pf_q = vsi->base_queue;
3903         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3904                 for (j = 0; j < 50; j++) {
3905                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3906                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3907                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3908                                 break;
3909                         usleep_range(1000, 2000);
3910                 }
3911
3912                 /* Skip if the queue is already in the requested state */
3913                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3914                         continue;
3915
3916                 /* turn on/off the queue */
3917                 if (enable)
3918                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3919                 else
3920                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3921                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3922
3923                 /* wait for the change to finish */
3924                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3925                 if (ret) {
3926                         dev_info(&pf->pdev->dev,
3927                                  "VSI seid %d Rx ring %d %sable timeout\n",
3928                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3929                         break;
3930                 }
3931         }
3932
3933         return ret;
3934 }
3935
3936 /**
3937  * i40e_vsi_control_rings - Start or stop a VSI's rings
3938  * @vsi: the VSI being configured
3939  * @enable: start or stop the rings
3940  **/
3941 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3942 {
3943         int ret = 0;
3944
3945         /* do rx first for enable and last for disable */
3946         if (request) {
3947                 ret = i40e_vsi_control_rx(vsi, request);
3948                 if (ret)
3949                         return ret;
3950                 ret = i40e_vsi_control_tx(vsi, request);
3951         } else {
3952                 /* Ignore return value, we need to shutdown whatever we can */
3953                 i40e_vsi_control_tx(vsi, request);
3954                 i40e_vsi_control_rx(vsi, request);
3955         }
3956
3957         return ret;
3958 }
3959
3960 /**
3961  * i40e_vsi_free_irq - Free the irq association with the OS
3962  * @vsi: the VSI being configured
3963  **/
3964 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3965 {
3966         struct i40e_pf *pf = vsi->back;
3967         struct i40e_hw *hw = &pf->hw;
3968         int base = vsi->base_vector;
3969         u32 val, qp;
3970         int i;
3971
3972         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3973                 if (!vsi->q_vectors)
3974                         return;
3975
3976                 if (!vsi->irqs_ready)
3977                         return;
3978
3979                 vsi->irqs_ready = false;
3980                 for (i = 0; i < vsi->num_q_vectors; i++) {
3981                         u16 vector = i + base;
3982
3983                         /* free only the irqs that were actually requested */
3984                         if (!vsi->q_vectors[i] ||
3985                             !vsi->q_vectors[i]->num_ringpairs)
3986                                 continue;
3987
3988                         /* clear the affinity_mask in the IRQ descriptor */
3989                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3990                                               NULL);
3991                         free_irq(pf->msix_entries[vector].vector,
3992                                  vsi->q_vectors[i]);
3993
3994                         /* Tear down the interrupt queue link list
3995                          *
3996                          * We know that they come in pairs and always
3997                          * the Rx first, then the Tx.  To clear the
3998                          * link list, stick the EOL value into the
3999                          * next_q field of the registers.
4000                          */
4001                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4002                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4003                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4004                         val |= I40E_QUEUE_END_OF_LIST
4005                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4006                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4007
4008                         while (qp != I40E_QUEUE_END_OF_LIST) {
4009                                 u32 next;
4010
4011                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4012
4013                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4014                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4015                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4016                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4017
4018                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4019                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4020
4021                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4022
4023                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4024
4025                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4026                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4027
4028                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4029                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4030                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4031                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4032
4033                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4034                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4035
4036                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4037                                 qp = next;
4038                         }
4039                 }
4040         } else {
4041                 free_irq(pf->pdev->irq, pf);
4042
4043                 val = rd32(hw, I40E_PFINT_LNKLST0);
4044                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4045                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4046                 val |= I40E_QUEUE_END_OF_LIST
4047                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4048                 wr32(hw, I40E_PFINT_LNKLST0, val);
4049
4050                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4051                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4052                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4053                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4054                          I40E_QINT_RQCTL_INTEVENT_MASK);
4055
4056                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4057                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4058
4059                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4060
4061                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4062
4063                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4064                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4065                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4066                          I40E_QINT_TQCTL_INTEVENT_MASK);
4067
4068                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4069                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4070
4071                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4072         }
4073 }
4074
4075 /**
4076  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4077  * @vsi: the VSI being configured
4078  * @v_idx: Index of vector to be freed
4079  *
4080  * This function frees the memory allocated to the q_vector.  In addition if
4081  * NAPI is enabled it will delete any references to the NAPI struct prior
4082  * to freeing the q_vector.
4083  **/
4084 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4085 {
4086         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4087         struct i40e_ring *ring;
4088
4089         if (!q_vector)
4090                 return;
4091
4092         /* disassociate q_vector from rings */
4093         i40e_for_each_ring(ring, q_vector->tx)
4094                 ring->q_vector = NULL;
4095
4096         i40e_for_each_ring(ring, q_vector->rx)
4097                 ring->q_vector = NULL;
4098
4099         /* only VSI w/ an associated netdev is set up w/ NAPI */
4100         if (vsi->netdev)
4101                 netif_napi_del(&q_vector->napi);
4102
4103         vsi->q_vectors[v_idx] = NULL;
4104
4105         kfree_rcu(q_vector, rcu);
4106 }
4107
4108 /**
4109  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4110  * @vsi: the VSI being un-configured
4111  *
4112  * This frees the memory allocated to the q_vectors and
4113  * deletes references to the NAPI struct.
4114  **/
4115 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4116 {
4117         int v_idx;
4118
4119         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4120                 i40e_free_q_vector(vsi, v_idx);
4121 }
4122
4123 /**
4124  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4125  * @pf: board private structure
4126  **/
4127 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4128 {
4129         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4130         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4131                 pci_disable_msix(pf->pdev);
4132                 kfree(pf->msix_entries);
4133                 pf->msix_entries = NULL;
4134                 kfree(pf->irq_pile);
4135                 pf->irq_pile = NULL;
4136         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4137                 pci_disable_msi(pf->pdev);
4138         }
4139         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4140 }
4141
4142 /**
4143  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4144  * @pf: board private structure
4145  *
4146  * We go through and clear interrupt specific resources and reset the structure
4147  * to pre-load conditions
4148  **/
4149 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4150 {
4151         int i;
4152
4153         i40e_stop_misc_vector(pf);
4154         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4155                 synchronize_irq(pf->msix_entries[0].vector);
4156                 free_irq(pf->msix_entries[0].vector, pf);
4157         }
4158
4159         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4160         for (i = 0; i < pf->num_alloc_vsi; i++)
4161                 if (pf->vsi[i])
4162                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4163         i40e_reset_interrupt_capability(pf);
4164 }
4165
4166 /**
4167  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4168  * @vsi: the VSI being configured
4169  **/
4170 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4171 {
4172         int q_idx;
4173
4174         if (!vsi->netdev)
4175                 return;
4176
4177         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4178                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4179 }
4180
4181 /**
4182  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4183  * @vsi: the VSI being configured
4184  **/
4185 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4186 {
4187         int q_idx;
4188
4189         if (!vsi->netdev)
4190                 return;
4191
4192         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4193                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4194 }
4195
4196 /**
4197  * i40e_vsi_close - Shut down a VSI
4198  * @vsi: the vsi to be quelled
4199  **/
4200 static void i40e_vsi_close(struct i40e_vsi *vsi)
4201 {
4202         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4203                 i40e_down(vsi);
4204         i40e_vsi_free_irq(vsi);
4205         i40e_vsi_free_tx_resources(vsi);
4206         i40e_vsi_free_rx_resources(vsi);
4207         vsi->current_netdev_flags = 0;
4208 }
4209
4210 /**
4211  * i40e_quiesce_vsi - Pause a given VSI
4212  * @vsi: the VSI being paused
4213  **/
4214 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4215 {
4216         if (test_bit(__I40E_DOWN, &vsi->state))
4217                 return;
4218
4219         /* No need to disable FCoE VSI when Tx suspended */
4220         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4221             vsi->type == I40E_VSI_FCOE) {
4222                 dev_dbg(&vsi->back->pdev->dev,
4223                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4224                 return;
4225         }
4226
4227         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4228         if (vsi->netdev && netif_running(vsi->netdev))
4229                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4230         else
4231                 i40e_vsi_close(vsi);
4232 }
4233
4234 /**
4235  * i40e_unquiesce_vsi - Resume a given VSI
4236  * @vsi: the VSI being resumed
4237  **/
4238 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4239 {
4240         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4241                 return;
4242
4243         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4244         if (vsi->netdev && netif_running(vsi->netdev))
4245                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4246         else
4247                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4248 }
4249
4250 /**
4251  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4252  * @pf: the PF
4253  **/
4254 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4255 {
4256         int v;
4257
4258         for (v = 0; v < pf->num_alloc_vsi; v++) {
4259                 if (pf->vsi[v])
4260                         i40e_quiesce_vsi(pf->vsi[v]);
4261         }
4262 }
4263
4264 /**
4265  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4266  * @pf: the PF
4267  **/
4268 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4269 {
4270         int v;
4271
4272         for (v = 0; v < pf->num_alloc_vsi; v++) {
4273                 if (pf->vsi[v])
4274                         i40e_unquiesce_vsi(pf->vsi[v]);
4275         }
4276 }
4277
4278 #ifdef CONFIG_I40E_DCB
4279 /**
4280  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4281  * @vsi: the VSI being configured
4282  *
4283  * This function waits for the given VSI's Tx queues to be disabled.
4284  **/
4285 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4286 {
4287         struct i40e_pf *pf = vsi->back;
4288         int i, pf_q, ret;
4289
4290         pf_q = vsi->base_queue;
4291         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4292                 /* Check and wait for the disable status of the queue */
4293                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4294                 if (ret) {
4295                         dev_info(&pf->pdev->dev,
4296                                  "VSI seid %d Tx ring %d disable timeout\n",
4297                                  vsi->seid, pf_q);
4298                         return ret;
4299                 }
4300         }
4301
4302         return 0;
4303 }
4304
4305 /**
4306  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4307  * @pf: the PF
4308  *
4309  * This function waits for the Tx queues to be in disabled state for all the
4310  * VSIs that are managed by this PF.
4311  **/
4312 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4313 {
4314         int v, ret = 0;
4315
4316         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4317                 /* No need to wait for FCoE VSI queues */
4318                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4319                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4320                         if (ret)
4321                                 break;
4322                 }
4323         }
4324
4325         return ret;
4326 }
4327
4328 #endif
4329
4330 /**
4331  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4332  * @q_idx: TX queue number
4333  * @vsi: Pointer to VSI struct
4334  *
4335  * This function checks specified queue for given VSI. Detects hung condition.
4336  * Sets hung bit since it is two step process. Before next run of service task
4337  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4338  * hung condition remain unchanged and during subsequent run, this function
4339  * issues SW interrupt to recover from hung condition.
4340  **/
4341 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4342 {
4343         struct i40e_ring *tx_ring = NULL;
4344         struct i40e_pf  *pf;
4345         u32 head, val, tx_pending;
4346         int i;
4347
4348         pf = vsi->back;
4349
4350         /* now that we have an index, find the tx_ring struct */
4351         for (i = 0; i < vsi->num_queue_pairs; i++) {
4352                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4353                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4354                                 tx_ring = vsi->tx_rings[i];
4355                                 break;
4356                         }
4357                 }
4358         }
4359
4360         if (!tx_ring)
4361                 return;
4362
4363         /* Read interrupt register */
4364         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4365                 val = rd32(&pf->hw,
4366                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4367                                                tx_ring->vsi->base_vector - 1));
4368         else
4369                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4370
4371         head = i40e_get_head(tx_ring);
4372
4373         tx_pending = i40e_get_tx_pending(tx_ring);
4374
4375         /* Interrupts are disabled and TX pending is non-zero,
4376          * trigger the SW interrupt (don't wait). Worst case
4377          * there will be one extra interrupt which may result
4378          * into not cleaning any queues because queues are cleaned.
4379          */
4380         if (tx_pending && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK)))
4381                 i40e_force_wb(vsi, tx_ring->q_vector);
4382 }
4383
4384 /**
4385  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4386  * @pf:  pointer to PF struct
4387  *
4388  * LAN VSI has netdev and netdev has TX queues. This function is to check
4389  * each of those TX queues if they are hung, trigger recovery by issuing
4390  * SW interrupt.
4391  **/
4392 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4393 {
4394         struct net_device *netdev;
4395         struct i40e_vsi *vsi;
4396         int i;
4397
4398         /* Only for LAN VSI */
4399         vsi = pf->vsi[pf->lan_vsi];
4400
4401         if (!vsi)
4402                 return;
4403
4404         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4405         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4406             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4407                 return;
4408
4409         /* Make sure type is MAIN VSI */
4410         if (vsi->type != I40E_VSI_MAIN)
4411                 return;
4412
4413         netdev = vsi->netdev;
4414         if (!netdev)
4415                 return;
4416
4417         /* Bail out if netif_carrier is not OK */
4418         if (!netif_carrier_ok(netdev))
4419                 return;
4420
4421         /* Go thru' TX queues for netdev */
4422         for (i = 0; i < netdev->num_tx_queues; i++) {
4423                 struct netdev_queue *q;
4424
4425                 q = netdev_get_tx_queue(netdev, i);
4426                 if (q)
4427                         i40e_detect_recover_hung_queue(i, vsi);
4428         }
4429 }
4430
4431 /**
4432  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4433  * @pf: pointer to PF
4434  *
4435  * Get TC map for ISCSI PF type that will include iSCSI TC
4436  * and LAN TC.
4437  **/
4438 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4439 {
4440         struct i40e_dcb_app_priority_table app;
4441         struct i40e_hw *hw = &pf->hw;
4442         u8 enabled_tc = 1; /* TC0 is always enabled */
4443         u8 tc, i;
4444         /* Get the iSCSI APP TLV */
4445         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4446
4447         for (i = 0; i < dcbcfg->numapps; i++) {
4448                 app = dcbcfg->app[i];
4449                 if (app.selector == I40E_APP_SEL_TCPIP &&
4450                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4451                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4452                         enabled_tc |= BIT_ULL(tc);
4453                         break;
4454                 }
4455         }
4456
4457         return enabled_tc;
4458 }
4459
4460 /**
4461  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4462  * @dcbcfg: the corresponding DCBx configuration structure
4463  *
4464  * Return the number of TCs from given DCBx configuration
4465  **/
4466 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4467 {
4468         u8 num_tc = 0;
4469         int i;
4470
4471         /* Scan the ETS Config Priority Table to find
4472          * traffic class enabled for a given priority
4473          * and use the traffic class index to get the
4474          * number of traffic classes enabled
4475          */
4476         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4477                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4478                         num_tc = dcbcfg->etscfg.prioritytable[i];
4479         }
4480
4481         /* Traffic class index starts from zero so
4482          * increment to return the actual count
4483          */
4484         return num_tc + 1;
4485 }
4486
4487 /**
4488  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4489  * @dcbcfg: the corresponding DCBx configuration structure
4490  *
4491  * Query the current DCB configuration and return the number of
4492  * traffic classes enabled from the given DCBX config
4493  **/
4494 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4495 {
4496         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4497         u8 enabled_tc = 1;
4498         u8 i;
4499
4500         for (i = 0; i < num_tc; i++)
4501                 enabled_tc |= BIT(i);
4502
4503         return enabled_tc;
4504 }
4505
4506 /**
4507  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4508  * @pf: PF being queried
4509  *
4510  * Return number of traffic classes enabled for the given PF
4511  **/
4512 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4513 {
4514         struct i40e_hw *hw = &pf->hw;
4515         u8 i, enabled_tc;
4516         u8 num_tc = 0;
4517         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4518
4519         /* If DCB is not enabled then always in single TC */
4520         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4521                 return 1;
4522
4523         /* SFP mode will be enabled for all TCs on port */
4524         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4525                 return i40e_dcb_get_num_tc(dcbcfg);
4526
4527         /* MFP mode return count of enabled TCs for this PF */
4528         if (pf->hw.func_caps.iscsi)
4529                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4530         else
4531                 return 1; /* Only TC0 */
4532
4533         /* At least have TC0 */
4534         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4535         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4536                 if (enabled_tc & BIT_ULL(i))
4537                         num_tc++;
4538         }
4539         return num_tc;
4540 }
4541
4542 /**
4543  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4544  * @pf: PF being queried
4545  *
4546  * Return a bitmap for first enabled traffic class for this PF.
4547  **/
4548 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4549 {
4550         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4551         u8 i = 0;
4552
4553         if (!enabled_tc)
4554                 return 0x1; /* TC0 */
4555
4556         /* Find the first enabled TC */
4557         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4558                 if (enabled_tc & BIT_ULL(i))
4559                         break;
4560         }
4561
4562         return BIT(i);
4563 }
4564
4565 /**
4566  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4567  * @pf: PF being queried
4568  *
4569  * Return a bitmap for enabled traffic classes for this PF.
4570  **/
4571 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4572 {
4573         /* If DCB is not enabled for this PF then just return default TC */
4574         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4575                 return i40e_pf_get_default_tc(pf);
4576
4577         /* SFP mode we want PF to be enabled for all TCs */
4578         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4579                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4580
4581         /* MFP enabled and iSCSI PF type */
4582         if (pf->hw.func_caps.iscsi)
4583                 return i40e_get_iscsi_tc_map(pf);
4584         else
4585                 return i40e_pf_get_default_tc(pf);
4586 }
4587
4588 /**
4589  * i40e_vsi_get_bw_info - Query VSI BW Information
4590  * @vsi: the VSI being queried
4591  *
4592  * Returns 0 on success, negative value on failure
4593  **/
4594 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4595 {
4596         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4597         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4598         struct i40e_pf *pf = vsi->back;
4599         struct i40e_hw *hw = &pf->hw;
4600         i40e_status ret;
4601         u32 tc_bw_max;
4602         int i;
4603
4604         /* Get the VSI level BW configuration */
4605         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4606         if (ret) {
4607                 dev_info(&pf->pdev->dev,
4608                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4609                          i40e_stat_str(&pf->hw, ret),
4610                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4611                 return -EINVAL;
4612         }
4613
4614         /* Get the VSI level BW configuration per TC */
4615         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4616                                                NULL);
4617         if (ret) {
4618                 dev_info(&pf->pdev->dev,
4619                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4620                          i40e_stat_str(&pf->hw, ret),
4621                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4622                 return -EINVAL;
4623         }
4624
4625         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4626                 dev_info(&pf->pdev->dev,
4627                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4628                          bw_config.tc_valid_bits,
4629                          bw_ets_config.tc_valid_bits);
4630                 /* Still continuing */
4631         }
4632
4633         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4634         vsi->bw_max_quanta = bw_config.max_bw;
4635         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4636                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4637         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4638                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4639                 vsi->bw_ets_limit_credits[i] =
4640                                         le16_to_cpu(bw_ets_config.credits[i]);
4641                 /* 3 bits out of 4 for each TC */
4642                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4643         }
4644
4645         return 0;
4646 }
4647
4648 /**
4649  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4650  * @vsi: the VSI being configured
4651  * @enabled_tc: TC bitmap
4652  * @bw_credits: BW shared credits per TC
4653  *
4654  * Returns 0 on success, negative value on failure
4655  **/
4656 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4657                                        u8 *bw_share)
4658 {
4659         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4660         i40e_status ret;
4661         int i;
4662
4663         bw_data.tc_valid_bits = enabled_tc;
4664         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4665                 bw_data.tc_bw_credits[i] = bw_share[i];
4666
4667         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4668                                        NULL);
4669         if (ret) {
4670                 dev_info(&vsi->back->pdev->dev,
4671                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4672                          vsi->back->hw.aq.asq_last_status);
4673                 return -EINVAL;
4674         }
4675
4676         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4677                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4678
4679         return 0;
4680 }
4681
4682 /**
4683  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4684  * @vsi: the VSI being configured
4685  * @enabled_tc: TC map to be enabled
4686  *
4687  **/
4688 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4689 {
4690         struct net_device *netdev = vsi->netdev;
4691         struct i40e_pf *pf = vsi->back;
4692         struct i40e_hw *hw = &pf->hw;
4693         u8 netdev_tc = 0;
4694         int i;
4695         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4696
4697         if (!netdev)
4698                 return;
4699
4700         if (!enabled_tc) {
4701                 netdev_reset_tc(netdev);
4702                 return;
4703         }
4704
4705         /* Set up actual enabled TCs on the VSI */
4706         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4707                 return;
4708
4709         /* set per TC queues for the VSI */
4710         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4711                 /* Only set TC queues for enabled tcs
4712                  *
4713                  * e.g. For a VSI that has TC0 and TC3 enabled the
4714                  * enabled_tc bitmap would be 0x00001001; the driver
4715                  * will set the numtc for netdev as 2 that will be
4716                  * referenced by the netdev layer as TC 0 and 1.
4717                  */
4718                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4719                         netdev_set_tc_queue(netdev,
4720                                         vsi->tc_config.tc_info[i].netdev_tc,
4721                                         vsi->tc_config.tc_info[i].qcount,
4722                                         vsi->tc_config.tc_info[i].qoffset);
4723         }
4724
4725         /* Assign UP2TC map for the VSI */
4726         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4727                 /* Get the actual TC# for the UP */
4728                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4729                 /* Get the mapped netdev TC# for the UP */
4730                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4731                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4732         }
4733 }
4734
4735 /**
4736  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4737  * @vsi: the VSI being configured
4738  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4739  **/
4740 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4741                                       struct i40e_vsi_context *ctxt)
4742 {
4743         /* copy just the sections touched not the entire info
4744          * since not all sections are valid as returned by
4745          * update vsi params
4746          */
4747         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4748         memcpy(&vsi->info.queue_mapping,
4749                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4750         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4751                sizeof(vsi->info.tc_mapping));
4752 }
4753
4754 /**
4755  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4756  * @vsi: VSI to be configured
4757  * @enabled_tc: TC bitmap
4758  *
4759  * This configures a particular VSI for TCs that are mapped to the
4760  * given TC bitmap. It uses default bandwidth share for TCs across
4761  * VSIs to configure TC for a particular VSI.
4762  *
4763  * NOTE:
4764  * It is expected that the VSI queues have been quisced before calling
4765  * this function.
4766  **/
4767 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4768 {
4769         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4770         struct i40e_vsi_context ctxt;
4771         int ret = 0;
4772         int i;
4773
4774         /* Check if enabled_tc is same as existing or new TCs */
4775         if (vsi->tc_config.enabled_tc == enabled_tc)
4776                 return ret;
4777
4778         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4779         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4780                 if (enabled_tc & BIT_ULL(i))
4781                         bw_share[i] = 1;
4782         }
4783
4784         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4785         if (ret) {
4786                 dev_info(&vsi->back->pdev->dev,
4787                          "Failed configuring TC map %d for VSI %d\n",
4788                          enabled_tc, vsi->seid);
4789                 goto out;
4790         }
4791
4792         /* Update Queue Pairs Mapping for currently enabled UPs */
4793         ctxt.seid = vsi->seid;
4794         ctxt.pf_num = vsi->back->hw.pf_id;
4795         ctxt.vf_num = 0;
4796         ctxt.uplink_seid = vsi->uplink_seid;
4797         ctxt.info = vsi->info;
4798         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4799
4800         /* Update the VSI after updating the VSI queue-mapping information */
4801         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4802         if (ret) {
4803                 dev_info(&vsi->back->pdev->dev,
4804                          "Update vsi tc config failed, err %s aq_err %s\n",
4805                          i40e_stat_str(&vsi->back->hw, ret),
4806                          i40e_aq_str(&vsi->back->hw,
4807                                      vsi->back->hw.aq.asq_last_status));
4808                 goto out;
4809         }
4810         /* update the local VSI info with updated queue map */
4811         i40e_vsi_update_queue_map(vsi, &ctxt);
4812         vsi->info.valid_sections = 0;
4813
4814         /* Update current VSI BW information */
4815         ret = i40e_vsi_get_bw_info(vsi);
4816         if (ret) {
4817                 dev_info(&vsi->back->pdev->dev,
4818                          "Failed updating vsi bw info, err %s aq_err %s\n",
4819                          i40e_stat_str(&vsi->back->hw, ret),
4820                          i40e_aq_str(&vsi->back->hw,
4821                                      vsi->back->hw.aq.asq_last_status));
4822                 goto out;
4823         }
4824
4825         /* Update the netdev TC setup */
4826         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4827 out:
4828         return ret;
4829 }
4830
4831 /**
4832  * i40e_veb_config_tc - Configure TCs for given VEB
4833  * @veb: given VEB
4834  * @enabled_tc: TC bitmap
4835  *
4836  * Configures given TC bitmap for VEB (switching) element
4837  **/
4838 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4839 {
4840         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4841         struct i40e_pf *pf = veb->pf;
4842         int ret = 0;
4843         int i;
4844
4845         /* No TCs or already enabled TCs just return */
4846         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4847                 return ret;
4848
4849         bw_data.tc_valid_bits = enabled_tc;
4850         /* bw_data.absolute_credits is not set (relative) */
4851
4852         /* Enable ETS TCs with equal BW Share for now */
4853         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4854                 if (enabled_tc & BIT_ULL(i))
4855                         bw_data.tc_bw_share_credits[i] = 1;
4856         }
4857
4858         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4859                                                    &bw_data, NULL);
4860         if (ret) {
4861                 dev_info(&pf->pdev->dev,
4862                          "VEB bw config failed, err %s aq_err %s\n",
4863                          i40e_stat_str(&pf->hw, ret),
4864                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4865                 goto out;
4866         }
4867
4868         /* Update the BW information */
4869         ret = i40e_veb_get_bw_info(veb);
4870         if (ret) {
4871                 dev_info(&pf->pdev->dev,
4872                          "Failed getting veb bw config, err %s aq_err %s\n",
4873                          i40e_stat_str(&pf->hw, ret),
4874                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4875         }
4876
4877 out:
4878         return ret;
4879 }
4880
4881 #ifdef CONFIG_I40E_DCB
4882 /**
4883  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4884  * @pf: PF struct
4885  *
4886  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4887  * the caller would've quiesce all the VSIs before calling
4888  * this function
4889  **/
4890 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4891 {
4892         u8 tc_map = 0;
4893         int ret;
4894         u8 v;
4895
4896         /* Enable the TCs available on PF to all VEBs */
4897         tc_map = i40e_pf_get_tc_map(pf);
4898         for (v = 0; v < I40E_MAX_VEB; v++) {
4899                 if (!pf->veb[v])
4900                         continue;
4901                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4902                 if (ret) {
4903                         dev_info(&pf->pdev->dev,
4904                                  "Failed configuring TC for VEB seid=%d\n",
4905                                  pf->veb[v]->seid);
4906                         /* Will try to configure as many components */
4907                 }
4908         }
4909
4910         /* Update each VSI */
4911         for (v = 0; v < pf->num_alloc_vsi; v++) {
4912                 if (!pf->vsi[v])
4913                         continue;
4914
4915                 /* - Enable all TCs for the LAN VSI
4916 #ifdef I40E_FCOE
4917                  * - For FCoE VSI only enable the TC configured
4918                  *   as per the APP TLV
4919 #endif
4920                  * - For all others keep them at TC0 for now
4921                  */
4922                 if (v == pf->lan_vsi)
4923                         tc_map = i40e_pf_get_tc_map(pf);
4924                 else
4925                         tc_map = i40e_pf_get_default_tc(pf);
4926 #ifdef I40E_FCOE
4927                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4928                         tc_map = i40e_get_fcoe_tc_map(pf);
4929 #endif /* #ifdef I40E_FCOE */
4930
4931                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4932                 if (ret) {
4933                         dev_info(&pf->pdev->dev,
4934                                  "Failed configuring TC for VSI seid=%d\n",
4935                                  pf->vsi[v]->seid);
4936                         /* Will try to configure as many components */
4937                 } else {
4938                         /* Re-configure VSI vectors based on updated TC map */
4939                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4940                         if (pf->vsi[v]->netdev)
4941                                 i40e_dcbnl_set_all(pf->vsi[v]);
4942                 }
4943         }
4944 }
4945
4946 /**
4947  * i40e_resume_port_tx - Resume port Tx
4948  * @pf: PF struct
4949  *
4950  * Resume a port's Tx and issue a PF reset in case of failure to
4951  * resume.
4952  **/
4953 static int i40e_resume_port_tx(struct i40e_pf *pf)
4954 {
4955         struct i40e_hw *hw = &pf->hw;
4956         int ret;
4957
4958         ret = i40e_aq_resume_port_tx(hw, NULL);
4959         if (ret) {
4960                 dev_info(&pf->pdev->dev,
4961                          "Resume Port Tx failed, err %s aq_err %s\n",
4962                           i40e_stat_str(&pf->hw, ret),
4963                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4964                 /* Schedule PF reset to recover */
4965                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4966                 i40e_service_event_schedule(pf);
4967         }
4968
4969         return ret;
4970 }
4971
4972 /**
4973  * i40e_init_pf_dcb - Initialize DCB configuration
4974  * @pf: PF being configured
4975  *
4976  * Query the current DCB configuration and cache it
4977  * in the hardware structure
4978  **/
4979 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4980 {
4981         struct i40e_hw *hw = &pf->hw;
4982         int err = 0;
4983
4984         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4985         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4986             (pf->hw.aq.fw_maj_ver < 4))
4987                 goto out;
4988
4989         /* Get the initial DCB configuration */
4990         err = i40e_init_dcb(hw);
4991         if (!err) {
4992                 /* Device/Function is not DCBX capable */
4993                 if ((!hw->func_caps.dcb) ||
4994                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4995                         dev_info(&pf->pdev->dev,
4996                                  "DCBX offload is not supported or is disabled for this PF.\n");
4997
4998                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4999                                 goto out;
5000
5001                 } else {
5002                         /* When status is not DISABLED then DCBX in FW */
5003                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5004                                        DCB_CAP_DCBX_VER_IEEE;
5005
5006                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5007                         /* Enable DCB tagging only when more than one TC */
5008                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5009                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5010                         dev_dbg(&pf->pdev->dev,
5011                                 "DCBX offload is supported for this PF.\n");
5012                 }
5013         } else {
5014                 dev_info(&pf->pdev->dev,
5015                          "Query for DCB configuration failed, err %s aq_err %s\n",
5016                          i40e_stat_str(&pf->hw, err),
5017                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5018         }
5019
5020 out:
5021         return err;
5022 }
5023 #endif /* CONFIG_I40E_DCB */
5024 #define SPEED_SIZE 14
5025 #define FC_SIZE 8
5026 /**
5027  * i40e_print_link_message - print link up or down
5028  * @vsi: the VSI for which link needs a message
5029  */
5030 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5031 {
5032         char *speed = "Unknown";
5033         char *fc = "Unknown";
5034
5035         if (vsi->current_isup == isup)
5036                 return;
5037         vsi->current_isup = isup;
5038         if (!isup) {
5039                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5040                 return;
5041         }
5042
5043         /* Warn user if link speed on NPAR enabled partition is not at
5044          * least 10GB
5045          */
5046         if (vsi->back->hw.func_caps.npar_enable &&
5047             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5048              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5049                 netdev_warn(vsi->netdev,
5050                             "The partition detected link speed that is less than 10Gbps\n");
5051
5052         switch (vsi->back->hw.phy.link_info.link_speed) {
5053         case I40E_LINK_SPEED_40GB:
5054                 speed = "40 G";
5055                 break;
5056         case I40E_LINK_SPEED_20GB:
5057                 speed = "20 G";
5058                 break;
5059         case I40E_LINK_SPEED_10GB:
5060                 speed = "10 G";
5061                 break;
5062         case I40E_LINK_SPEED_1GB:
5063                 speed = "1000 M";
5064                 break;
5065         case I40E_LINK_SPEED_100MB:
5066                 speed = "100 M";
5067                 break;
5068         default:
5069                 break;
5070         }
5071
5072         switch (vsi->back->hw.fc.current_mode) {
5073         case I40E_FC_FULL:
5074                 fc = "RX/TX";
5075                 break;
5076         case I40E_FC_TX_PAUSE:
5077                 fc = "TX";
5078                 break;
5079         case I40E_FC_RX_PAUSE:
5080                 fc = "RX";
5081                 break;
5082         default:
5083                 fc = "None";
5084                 break;
5085         }
5086
5087         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5088                     speed, fc);
5089 }
5090
5091 /**
5092  * i40e_up_complete - Finish the last steps of bringing up a connection
5093  * @vsi: the VSI being configured
5094  **/
5095 static int i40e_up_complete(struct i40e_vsi *vsi)
5096 {
5097         struct i40e_pf *pf = vsi->back;
5098         int err;
5099
5100         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5101                 i40e_vsi_configure_msix(vsi);
5102         else
5103                 i40e_configure_msi_and_legacy(vsi);
5104
5105         /* start rings */
5106         err = i40e_vsi_control_rings(vsi, true);
5107         if (err)
5108                 return err;
5109
5110         clear_bit(__I40E_DOWN, &vsi->state);
5111         i40e_napi_enable_all(vsi);
5112         i40e_vsi_enable_irq(vsi);
5113
5114         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5115             (vsi->netdev)) {
5116                 i40e_print_link_message(vsi, true);
5117                 netif_tx_start_all_queues(vsi->netdev);
5118                 netif_carrier_on(vsi->netdev);
5119         } else if (vsi->netdev) {
5120                 i40e_print_link_message(vsi, false);
5121                 /* need to check for qualified module here*/
5122                 if ((pf->hw.phy.link_info.link_info &
5123                         I40E_AQ_MEDIA_AVAILABLE) &&
5124                     (!(pf->hw.phy.link_info.an_info &
5125                         I40E_AQ_QUALIFIED_MODULE)))
5126                         netdev_err(vsi->netdev,
5127                                    "the driver failed to link because an unqualified module was detected.");
5128         }
5129
5130         /* replay FDIR SB filters */
5131         if (vsi->type == I40E_VSI_FDIR) {
5132                 /* reset fd counters */
5133                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5134                 if (pf->fd_tcp_rule > 0) {
5135                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5136                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5137                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5138                         pf->fd_tcp_rule = 0;
5139                 }
5140                 i40e_fdir_filter_restore(vsi);
5141         }
5142         i40e_service_event_schedule(pf);
5143
5144         return 0;
5145 }
5146
5147 /**
5148  * i40e_vsi_reinit_locked - Reset the VSI
5149  * @vsi: the VSI being configured
5150  *
5151  * Rebuild the ring structs after some configuration
5152  * has changed, e.g. MTU size.
5153  **/
5154 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5155 {
5156         struct i40e_pf *pf = vsi->back;
5157
5158         WARN_ON(in_interrupt());
5159         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5160                 usleep_range(1000, 2000);
5161         i40e_down(vsi);
5162
5163         /* Give a VF some time to respond to the reset.  The
5164          * two second wait is based upon the watchdog cycle in
5165          * the VF driver.
5166          */
5167         if (vsi->type == I40E_VSI_SRIOV)
5168                 msleep(2000);
5169         i40e_up(vsi);
5170         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5171 }
5172
5173 /**
5174  * i40e_up - Bring the connection back up after being down
5175  * @vsi: the VSI being configured
5176  **/
5177 int i40e_up(struct i40e_vsi *vsi)
5178 {
5179         int err;
5180
5181         err = i40e_vsi_configure(vsi);
5182         if (!err)
5183                 err = i40e_up_complete(vsi);
5184
5185         return err;
5186 }
5187
5188 /**
5189  * i40e_down - Shutdown the connection processing
5190  * @vsi: the VSI being stopped
5191  **/
5192 void i40e_down(struct i40e_vsi *vsi)
5193 {
5194         int i;
5195
5196         /* It is assumed that the caller of this function
5197          * sets the vsi->state __I40E_DOWN bit.
5198          */
5199         if (vsi->netdev) {
5200                 netif_carrier_off(vsi->netdev);
5201                 netif_tx_disable(vsi->netdev);
5202         }
5203         i40e_vsi_disable_irq(vsi);
5204         i40e_vsi_control_rings(vsi, false);
5205         i40e_napi_disable_all(vsi);
5206
5207         for (i = 0; i < vsi->num_queue_pairs; i++) {
5208                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5209                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5210         }
5211 }
5212
5213 /**
5214  * i40e_setup_tc - configure multiple traffic classes
5215  * @netdev: net device to configure
5216  * @tc: number of traffic classes to enable
5217  **/
5218 #ifdef I40E_FCOE
5219 int i40e_setup_tc(struct net_device *netdev, u8 tc)
5220 #else
5221 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5222 #endif
5223 {
5224         struct i40e_netdev_priv *np = netdev_priv(netdev);
5225         struct i40e_vsi *vsi = np->vsi;
5226         struct i40e_pf *pf = vsi->back;
5227         u8 enabled_tc = 0;
5228         int ret = -EINVAL;
5229         int i;
5230
5231         /* Check if DCB enabled to continue */
5232         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5233                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5234                 goto exit;
5235         }
5236
5237         /* Check if MFP enabled */
5238         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5239                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5240                 goto exit;
5241         }
5242
5243         /* Check whether tc count is within enabled limit */
5244         if (tc > i40e_pf_get_num_tc(pf)) {
5245                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5246                 goto exit;
5247         }
5248
5249         /* Generate TC map for number of tc requested */
5250         for (i = 0; i < tc; i++)
5251                 enabled_tc |= BIT_ULL(i);
5252
5253         /* Requesting same TC configuration as already enabled */
5254         if (enabled_tc == vsi->tc_config.enabled_tc)
5255                 return 0;
5256
5257         /* Quiesce VSI queues */
5258         i40e_quiesce_vsi(vsi);
5259
5260         /* Configure VSI for enabled TCs */
5261         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5262         if (ret) {
5263                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5264                             vsi->seid);
5265                 goto exit;
5266         }
5267
5268         /* Unquiesce VSI */
5269         i40e_unquiesce_vsi(vsi);
5270
5271 exit:
5272         return ret;
5273 }
5274
5275 /**
5276  * i40e_open - Called when a network interface is made active
5277  * @netdev: network interface device structure
5278  *
5279  * The open entry point is called when a network interface is made
5280  * active by the system (IFF_UP).  At this point all resources needed
5281  * for transmit and receive operations are allocated, the interrupt
5282  * handler is registered with the OS, the netdev watchdog subtask is
5283  * enabled, and the stack is notified that the interface is ready.
5284  *
5285  * Returns 0 on success, negative value on failure
5286  **/
5287 int i40e_open(struct net_device *netdev)
5288 {
5289         struct i40e_netdev_priv *np = netdev_priv(netdev);
5290         struct i40e_vsi *vsi = np->vsi;
5291         struct i40e_pf *pf = vsi->back;
5292         int err;
5293
5294         /* disallow open during test or if eeprom is broken */
5295         if (test_bit(__I40E_TESTING, &pf->state) ||
5296             test_bit(__I40E_BAD_EEPROM, &pf->state))
5297                 return -EBUSY;
5298
5299         netif_carrier_off(netdev);
5300
5301         err = i40e_vsi_open(vsi);
5302         if (err)
5303                 return err;
5304
5305         /* configure global TSO hardware offload settings */
5306         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5307                                                        TCP_FLAG_FIN) >> 16);
5308         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5309                                                        TCP_FLAG_FIN |
5310                                                        TCP_FLAG_CWR) >> 16);
5311         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5312
5313 #ifdef CONFIG_I40E_VXLAN
5314         vxlan_get_rx_port(netdev);
5315 #endif
5316
5317         return 0;
5318 }
5319
5320 /**
5321  * i40e_vsi_open -
5322  * @vsi: the VSI to open
5323  *
5324  * Finish initialization of the VSI.
5325  *
5326  * Returns 0 on success, negative value on failure
5327  **/
5328 int i40e_vsi_open(struct i40e_vsi *vsi)
5329 {
5330         struct i40e_pf *pf = vsi->back;
5331         char int_name[I40E_INT_NAME_STR_LEN];
5332         int err;
5333
5334         /* allocate descriptors */
5335         err = i40e_vsi_setup_tx_resources(vsi);
5336         if (err)
5337                 goto err_setup_tx;
5338         err = i40e_vsi_setup_rx_resources(vsi);
5339         if (err)
5340                 goto err_setup_rx;
5341
5342         err = i40e_vsi_configure(vsi);
5343         if (err)
5344                 goto err_setup_rx;
5345
5346         if (vsi->netdev) {
5347                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5348                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5349                 err = i40e_vsi_request_irq(vsi, int_name);
5350                 if (err)
5351                         goto err_setup_rx;
5352
5353                 /* Notify the stack of the actual queue counts. */
5354                 err = netif_set_real_num_tx_queues(vsi->netdev,
5355                                                    vsi->num_queue_pairs);
5356                 if (err)
5357                         goto err_set_queues;
5358
5359                 err = netif_set_real_num_rx_queues(vsi->netdev,
5360                                                    vsi->num_queue_pairs);
5361                 if (err)
5362                         goto err_set_queues;
5363
5364         } else if (vsi->type == I40E_VSI_FDIR) {
5365                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5366                          dev_driver_string(&pf->pdev->dev),
5367                          dev_name(&pf->pdev->dev));
5368                 err = i40e_vsi_request_irq(vsi, int_name);
5369
5370         } else {
5371                 err = -EINVAL;
5372                 goto err_setup_rx;
5373         }
5374
5375         err = i40e_up_complete(vsi);
5376         if (err)
5377                 goto err_up_complete;
5378
5379         return 0;
5380
5381 err_up_complete:
5382         i40e_down(vsi);
5383 err_set_queues:
5384         i40e_vsi_free_irq(vsi);
5385 err_setup_rx:
5386         i40e_vsi_free_rx_resources(vsi);
5387 err_setup_tx:
5388         i40e_vsi_free_tx_resources(vsi);
5389         if (vsi == pf->vsi[pf->lan_vsi])
5390                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5391
5392         return err;
5393 }
5394
5395 /**
5396  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5397  * @pf: Pointer to PF
5398  *
5399  * This function destroys the hlist where all the Flow Director
5400  * filters were saved.
5401  **/
5402 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5403 {
5404         struct i40e_fdir_filter *filter;
5405         struct hlist_node *node2;
5406
5407         hlist_for_each_entry_safe(filter, node2,
5408                                   &pf->fdir_filter_list, fdir_node) {
5409                 hlist_del(&filter->fdir_node);
5410                 kfree(filter);
5411         }
5412         pf->fdir_pf_active_filters = 0;
5413 }
5414
5415 /**
5416  * i40e_close - Disables a network interface
5417  * @netdev: network interface device structure
5418  *
5419  * The close entry point is called when an interface is de-activated
5420  * by the OS.  The hardware is still under the driver's control, but
5421  * this netdev interface is disabled.
5422  *
5423  * Returns 0, this is not allowed to fail
5424  **/
5425 #ifdef I40E_FCOE
5426 int i40e_close(struct net_device *netdev)
5427 #else
5428 static int i40e_close(struct net_device *netdev)
5429 #endif
5430 {
5431         struct i40e_netdev_priv *np = netdev_priv(netdev);
5432         struct i40e_vsi *vsi = np->vsi;
5433
5434         i40e_vsi_close(vsi);
5435
5436         return 0;
5437 }
5438
5439 /**
5440  * i40e_do_reset - Start a PF or Core Reset sequence
5441  * @pf: board private structure
5442  * @reset_flags: which reset is requested
5443  *
5444  * The essential difference in resets is that the PF Reset
5445  * doesn't clear the packet buffers, doesn't reset the PE
5446  * firmware, and doesn't bother the other PFs on the chip.
5447  **/
5448 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5449 {
5450         u32 val;
5451
5452         WARN_ON(in_interrupt());
5453
5454         if (i40e_check_asq_alive(&pf->hw))
5455                 i40e_vc_notify_reset(pf);
5456
5457         /* do the biggest reset indicated */
5458         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5459
5460                 /* Request a Global Reset
5461                  *
5462                  * This will start the chip's countdown to the actual full
5463                  * chip reset event, and a warning interrupt to be sent
5464                  * to all PFs, including the requestor.  Our handler
5465                  * for the warning interrupt will deal with the shutdown
5466                  * and recovery of the switch setup.
5467                  */
5468                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5469                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5470                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5471                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5472
5473         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5474
5475                 /* Request a Core Reset
5476                  *
5477                  * Same as Global Reset, except does *not* include the MAC/PHY
5478                  */
5479                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5480                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5481                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5482                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5483                 i40e_flush(&pf->hw);
5484
5485         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5486
5487                 /* Request a PF Reset
5488                  *
5489                  * Resets only the PF-specific registers
5490                  *
5491                  * This goes directly to the tear-down and rebuild of
5492                  * the switch, since we need to do all the recovery as
5493                  * for the Core Reset.
5494                  */
5495                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5496                 i40e_handle_reset_warning(pf);
5497
5498         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5499                 int v;
5500
5501                 /* Find the VSI(s) that requested a re-init */
5502                 dev_info(&pf->pdev->dev,
5503                          "VSI reinit requested\n");
5504                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5505                         struct i40e_vsi *vsi = pf->vsi[v];
5506
5507                         if (vsi != NULL &&
5508                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5509                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5510                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5511                         }
5512                 }
5513         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5514                 int v;
5515
5516                 /* Find the VSI(s) that needs to be brought down */
5517                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5518                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5519                         struct i40e_vsi *vsi = pf->vsi[v];
5520
5521                         if (vsi != NULL &&
5522                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5523                                 set_bit(__I40E_DOWN, &vsi->state);
5524                                 i40e_down(vsi);
5525                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5526                         }
5527                 }
5528         } else {
5529                 dev_info(&pf->pdev->dev,
5530                          "bad reset request 0x%08x\n", reset_flags);
5531         }
5532 }
5533
5534 #ifdef CONFIG_I40E_DCB
5535 /**
5536  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5537  * @pf: board private structure
5538  * @old_cfg: current DCB config
5539  * @new_cfg: new DCB config
5540  **/
5541 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5542                             struct i40e_dcbx_config *old_cfg,
5543                             struct i40e_dcbx_config *new_cfg)
5544 {
5545         bool need_reconfig = false;
5546
5547         /* Check if ETS configuration has changed */
5548         if (memcmp(&new_cfg->etscfg,
5549                    &old_cfg->etscfg,
5550                    sizeof(new_cfg->etscfg))) {
5551                 /* If Priority Table has changed reconfig is needed */
5552                 if (memcmp(&new_cfg->etscfg.prioritytable,
5553                            &old_cfg->etscfg.prioritytable,
5554                            sizeof(new_cfg->etscfg.prioritytable))) {
5555                         need_reconfig = true;
5556                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5557                 }
5558
5559                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5560                            &old_cfg->etscfg.tcbwtable,
5561                            sizeof(new_cfg->etscfg.tcbwtable)))
5562                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5563
5564                 if (memcmp(&new_cfg->etscfg.tsatable,
5565                            &old_cfg->etscfg.tsatable,
5566                            sizeof(new_cfg->etscfg.tsatable)))
5567                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5568         }
5569
5570         /* Check if PFC configuration has changed */
5571         if (memcmp(&new_cfg->pfc,
5572                    &old_cfg->pfc,
5573                    sizeof(new_cfg->pfc))) {
5574                 need_reconfig = true;
5575                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5576         }
5577
5578         /* Check if APP Table has changed */
5579         if (memcmp(&new_cfg->app,
5580                    &old_cfg->app,
5581                    sizeof(new_cfg->app))) {
5582                 need_reconfig = true;
5583                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5584         }
5585
5586         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5587         return need_reconfig;
5588 }
5589
5590 /**
5591  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5592  * @pf: board private structure
5593  * @e: event info posted on ARQ
5594  **/
5595 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5596                                   struct i40e_arq_event_info *e)
5597 {
5598         struct i40e_aqc_lldp_get_mib *mib =
5599                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5600         struct i40e_hw *hw = &pf->hw;
5601         struct i40e_dcbx_config tmp_dcbx_cfg;
5602         bool need_reconfig = false;
5603         int ret = 0;
5604         u8 type;
5605
5606         /* Not DCB capable or capability disabled */
5607         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5608                 return ret;
5609
5610         /* Ignore if event is not for Nearest Bridge */
5611         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5612                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5613         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5614         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5615                 return ret;
5616
5617         /* Check MIB Type and return if event for Remote MIB update */
5618         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5619         dev_dbg(&pf->pdev->dev,
5620                 "LLDP event mib type %s\n", type ? "remote" : "local");
5621         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5622                 /* Update the remote cached instance and return */
5623                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5624                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5625                                 &hw->remote_dcbx_config);
5626                 goto exit;
5627         }
5628
5629         /* Store the old configuration */
5630         tmp_dcbx_cfg = hw->local_dcbx_config;
5631
5632         /* Reset the old DCBx configuration data */
5633         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5634         /* Get updated DCBX data from firmware */
5635         ret = i40e_get_dcb_config(&pf->hw);
5636         if (ret) {
5637                 dev_info(&pf->pdev->dev,
5638                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5639                          i40e_stat_str(&pf->hw, ret),
5640                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5641                 goto exit;
5642         }
5643
5644         /* No change detected in DCBX configs */
5645         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5646                     sizeof(tmp_dcbx_cfg))) {
5647                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5648                 goto exit;
5649         }
5650
5651         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5652                                                &hw->local_dcbx_config);
5653
5654         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5655
5656         if (!need_reconfig)
5657                 goto exit;
5658
5659         /* Enable DCB tagging only when more than one TC */
5660         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5661                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5662         else
5663                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5664
5665         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5666         /* Reconfiguration needed quiesce all VSIs */
5667         i40e_pf_quiesce_all_vsi(pf);
5668
5669         /* Changes in configuration update VEB/VSI */
5670         i40e_dcb_reconfigure(pf);
5671
5672         ret = i40e_resume_port_tx(pf);
5673
5674         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5675         /* In case of error no point in resuming VSIs */
5676         if (ret)
5677                 goto exit;
5678
5679         /* Wait for the PF's Tx queues to be disabled */
5680         ret = i40e_pf_wait_txq_disabled(pf);
5681         if (ret) {
5682                 /* Schedule PF reset to recover */
5683                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5684                 i40e_service_event_schedule(pf);
5685         } else {
5686                 i40e_pf_unquiesce_all_vsi(pf);
5687         }
5688
5689 exit:
5690         return ret;
5691 }
5692 #endif /* CONFIG_I40E_DCB */
5693
5694 /**
5695  * i40e_do_reset_safe - Protected reset path for userland calls.
5696  * @pf: board private structure
5697  * @reset_flags: which reset is requested
5698  *
5699  **/
5700 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5701 {
5702         rtnl_lock();
5703         i40e_do_reset(pf, reset_flags);
5704         rtnl_unlock();
5705 }
5706
5707 /**
5708  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5709  * @pf: board private structure
5710  * @e: event info posted on ARQ
5711  *
5712  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5713  * and VF queues
5714  **/
5715 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5716                                            struct i40e_arq_event_info *e)
5717 {
5718         struct i40e_aqc_lan_overflow *data =
5719                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5720         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5721         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5722         struct i40e_hw *hw = &pf->hw;
5723         struct i40e_vf *vf;
5724         u16 vf_id;
5725
5726         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5727                 queue, qtx_ctl);
5728
5729         /* Queue belongs to VF, find the VF and issue VF reset */
5730         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5731             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5732                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5733                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5734                 vf_id -= hw->func_caps.vf_base_id;
5735                 vf = &pf->vf[vf_id];
5736                 i40e_vc_notify_vf_reset(vf);
5737                 /* Allow VF to process pending reset notification */
5738                 msleep(20);
5739                 i40e_reset_vf(vf, false);
5740         }
5741 }
5742
5743 /**
5744  * i40e_service_event_complete - Finish up the service event
5745  * @pf: board private structure
5746  **/
5747 static void i40e_service_event_complete(struct i40e_pf *pf)
5748 {
5749         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5750
5751         /* flush memory to make sure state is correct before next watchog */
5752         smp_mb__before_atomic();
5753         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5754 }
5755
5756 /**
5757  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5758  * @pf: board private structure
5759  **/
5760 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5761 {
5762         u32 val, fcnt_prog;
5763
5764         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5765         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5766         return fcnt_prog;
5767 }
5768
5769 /**
5770  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5771  * @pf: board private structure
5772  **/
5773 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5774 {
5775         u32 val, fcnt_prog;
5776
5777         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5778         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5779                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5780                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5781         return fcnt_prog;
5782 }
5783
5784 /**
5785  * i40e_get_global_fd_count - Get total FD filters programmed on device
5786  * @pf: board private structure
5787  **/
5788 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5789 {
5790         u32 val, fcnt_prog;
5791
5792         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5793         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5794                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5795                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5796         return fcnt_prog;
5797 }
5798
5799 /**
5800  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5801  * @pf: board private structure
5802  **/
5803 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5804 {
5805         struct i40e_fdir_filter *filter;
5806         u32 fcnt_prog, fcnt_avail;
5807         struct hlist_node *node;
5808
5809         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5810                 return;
5811
5812         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5813          * to re-enable
5814          */
5815         fcnt_prog = i40e_get_global_fd_count(pf);
5816         fcnt_avail = pf->fdir_pf_filter_count;
5817         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5818             (pf->fd_add_err == 0) ||
5819             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5820                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5821                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5822                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5823                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5824                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5825                 }
5826         }
5827         /* Wait for some more space to be available to turn on ATR */
5828         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5829                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5830                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5831                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5832                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5833                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5834                 }
5835         }
5836
5837         /* if hw had a problem adding a filter, delete it */
5838         if (pf->fd_inv > 0) {
5839                 hlist_for_each_entry_safe(filter, node,
5840                                           &pf->fdir_filter_list, fdir_node) {
5841                         if (filter->fd_id == pf->fd_inv) {
5842                                 hlist_del(&filter->fdir_node);
5843                                 kfree(filter);
5844                                 pf->fdir_pf_active_filters--;
5845                         }
5846                 }
5847         }
5848 }
5849
5850 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5851 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5852 /**
5853  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5854  * @pf: board private structure
5855  **/
5856 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5857 {
5858         unsigned long min_flush_time;
5859         int flush_wait_retry = 50;
5860         bool disable_atr = false;
5861         int fd_room;
5862         int reg;
5863
5864         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5865                 return;
5866
5867         if (!time_after(jiffies, pf->fd_flush_timestamp +
5868                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5869                 return;
5870
5871         /* If the flush is happening too quick and we have mostly SB rules we
5872          * should not re-enable ATR for some time.
5873          */
5874         min_flush_time = pf->fd_flush_timestamp +
5875                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5876         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5877
5878         if (!(time_after(jiffies, min_flush_time)) &&
5879             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5880                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5881                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5882                 disable_atr = true;
5883         }
5884
5885         pf->fd_flush_timestamp = jiffies;
5886         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5887         /* flush all filters */
5888         wr32(&pf->hw, I40E_PFQF_CTL_1,
5889              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5890         i40e_flush(&pf->hw);
5891         pf->fd_flush_cnt++;
5892         pf->fd_add_err = 0;
5893         do {
5894                 /* Check FD flush status every 5-6msec */
5895                 usleep_range(5000, 6000);
5896                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5897                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5898                         break;
5899         } while (flush_wait_retry--);
5900         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5901                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5902         } else {
5903                 /* replay sideband filters */
5904                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5905                 if (!disable_atr)
5906                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5907                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5908                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5909                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5910         }
5911
5912 }
5913
5914 /**
5915  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5916  * @pf: board private structure
5917  **/
5918 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5919 {
5920         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5921 }
5922
5923 /* We can see up to 256 filter programming desc in transit if the filters are
5924  * being applied really fast; before we see the first
5925  * filter miss error on Rx queue 0. Accumulating enough error messages before
5926  * reacting will make sure we don't cause flush too often.
5927  */
5928 #define I40E_MAX_FD_PROGRAM_ERROR 256
5929
5930 /**
5931  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5932  * @pf: board private structure
5933  **/
5934 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5935 {
5936
5937         /* if interface is down do nothing */
5938         if (test_bit(__I40E_DOWN, &pf->state))
5939                 return;
5940
5941         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5942                 return;
5943
5944         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5945                 i40e_fdir_flush_and_replay(pf);
5946
5947         i40e_fdir_check_and_reenable(pf);
5948
5949 }
5950
5951 /**
5952  * i40e_vsi_link_event - notify VSI of a link event
5953  * @vsi: vsi to be notified
5954  * @link_up: link up or down
5955  **/
5956 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5957 {
5958         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5959                 return;
5960
5961         switch (vsi->type) {
5962         case I40E_VSI_MAIN:
5963 #ifdef I40E_FCOE
5964         case I40E_VSI_FCOE:
5965 #endif
5966                 if (!vsi->netdev || !vsi->netdev_registered)
5967                         break;
5968
5969                 if (link_up) {
5970                         netif_carrier_on(vsi->netdev);
5971                         netif_tx_wake_all_queues(vsi->netdev);
5972                 } else {
5973                         netif_carrier_off(vsi->netdev);
5974                         netif_tx_stop_all_queues(vsi->netdev);
5975                 }
5976                 break;
5977
5978         case I40E_VSI_SRIOV:
5979         case I40E_VSI_VMDQ2:
5980         case I40E_VSI_CTRL:
5981         case I40E_VSI_MIRROR:
5982         default:
5983                 /* there is no notification for other VSIs */
5984                 break;
5985         }
5986 }
5987
5988 /**
5989  * i40e_veb_link_event - notify elements on the veb of a link event
5990  * @veb: veb to be notified
5991  * @link_up: link up or down
5992  **/
5993 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5994 {
5995         struct i40e_pf *pf;
5996         int i;
5997
5998         if (!veb || !veb->pf)
5999                 return;
6000         pf = veb->pf;
6001
6002         /* depth first... */
6003         for (i = 0; i < I40E_MAX_VEB; i++)
6004                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6005                         i40e_veb_link_event(pf->veb[i], link_up);
6006
6007         /* ... now the local VSIs */
6008         for (i = 0; i < pf->num_alloc_vsi; i++)
6009                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6010                         i40e_vsi_link_event(pf->vsi[i], link_up);
6011 }
6012
6013 /**
6014  * i40e_link_event - Update netif_carrier status
6015  * @pf: board private structure
6016  **/
6017 static void i40e_link_event(struct i40e_pf *pf)
6018 {
6019         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6020         u8 new_link_speed, old_link_speed;
6021         i40e_status status;
6022         bool new_link, old_link;
6023
6024         /* save off old link status information */
6025         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6026
6027         /* set this to force the get_link_status call to refresh state */
6028         pf->hw.phy.get_link_info = true;
6029
6030         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6031
6032         status = i40e_get_link_status(&pf->hw, &new_link);
6033         if (status) {
6034                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6035                         status);
6036                 return;
6037         }
6038
6039         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6040         new_link_speed = pf->hw.phy.link_info.link_speed;
6041
6042         if (new_link == old_link &&
6043             new_link_speed == old_link_speed &&
6044             (test_bit(__I40E_DOWN, &vsi->state) ||
6045              new_link == netif_carrier_ok(vsi->netdev)))
6046                 return;
6047
6048         if (!test_bit(__I40E_DOWN, &vsi->state))
6049                 i40e_print_link_message(vsi, new_link);
6050
6051         /* Notify the base of the switch tree connected to
6052          * the link.  Floating VEBs are not notified.
6053          */
6054         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6055                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6056         else
6057                 i40e_vsi_link_event(vsi, new_link);
6058
6059         if (pf->vf)
6060                 i40e_vc_notify_link_state(pf);
6061
6062         if (pf->flags & I40E_FLAG_PTP)
6063                 i40e_ptp_set_increment(pf);
6064 }
6065
6066 /**
6067  * i40e_watchdog_subtask - periodic checks not using event driven response
6068  * @pf: board private structure
6069  **/
6070 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6071 {
6072         int i;
6073
6074         /* if interface is down do nothing */
6075         if (test_bit(__I40E_DOWN, &pf->state) ||
6076             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6077                 return;
6078
6079         /* make sure we don't do these things too often */
6080         if (time_before(jiffies, (pf->service_timer_previous +
6081                                   pf->service_timer_period)))
6082                 return;
6083         pf->service_timer_previous = jiffies;
6084
6085         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6086                 i40e_link_event(pf);
6087
6088         /* Update the stats for active netdevs so the network stack
6089          * can look at updated numbers whenever it cares to
6090          */
6091         for (i = 0; i < pf->num_alloc_vsi; i++)
6092                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6093                         i40e_update_stats(pf->vsi[i]);
6094
6095         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6096                 /* Update the stats for the active switching components */
6097                 for (i = 0; i < I40E_MAX_VEB; i++)
6098                         if (pf->veb[i])
6099                                 i40e_update_veb_stats(pf->veb[i]);
6100         }
6101
6102         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6103 }
6104
6105 /**
6106  * i40e_reset_subtask - Set up for resetting the device and driver
6107  * @pf: board private structure
6108  **/
6109 static void i40e_reset_subtask(struct i40e_pf *pf)
6110 {
6111         u32 reset_flags = 0;
6112
6113         rtnl_lock();
6114         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6115                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
6116                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6117         }
6118         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6119                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
6120                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6121         }
6122         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6123                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
6124                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6125         }
6126         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6127                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
6128                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6129         }
6130         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6131                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
6132                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6133         }
6134
6135         /* If there's a recovery already waiting, it takes
6136          * precedence before starting a new reset sequence.
6137          */
6138         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6139                 i40e_handle_reset_warning(pf);
6140                 goto unlock;
6141         }
6142
6143         /* If we're already down or resetting, just bail */
6144         if (reset_flags &&
6145             !test_bit(__I40E_DOWN, &pf->state) &&
6146             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6147                 i40e_do_reset(pf, reset_flags);
6148
6149 unlock:
6150         rtnl_unlock();
6151 }
6152
6153 /**
6154  * i40e_handle_link_event - Handle link event
6155  * @pf: board private structure
6156  * @e: event info posted on ARQ
6157  **/
6158 static void i40e_handle_link_event(struct i40e_pf *pf,
6159                                    struct i40e_arq_event_info *e)
6160 {
6161         struct i40e_aqc_get_link_status *status =
6162                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6163
6164         /* Do a new status request to re-enable LSE reporting
6165          * and load new status information into the hw struct
6166          * This completely ignores any state information
6167          * in the ARQ event info, instead choosing to always
6168          * issue the AQ update link status command.
6169          */
6170         i40e_link_event(pf);
6171
6172         /* check for unqualified module, if link is down */
6173         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6174             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6175             (!(status->link_info & I40E_AQ_LINK_UP)))
6176                 dev_err(&pf->pdev->dev,
6177                         "The driver failed to link because an unqualified module was detected.\n");
6178 }
6179
6180 /**
6181  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6182  * @pf: board private structure
6183  **/
6184 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6185 {
6186         struct i40e_arq_event_info event;
6187         struct i40e_hw *hw = &pf->hw;
6188         u16 pending, i = 0;
6189         i40e_status ret;
6190         u16 opcode;
6191         u32 oldval;
6192         u32 val;
6193
6194         /* Do not run clean AQ when PF reset fails */
6195         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6196                 return;
6197
6198         /* check for error indications */
6199         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6200         oldval = val;
6201         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6202                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6203                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6204         }
6205         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6206                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6207                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6208         }
6209         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6210                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6211                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6212         }
6213         if (oldval != val)
6214                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6215
6216         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6217         oldval = val;
6218         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6219                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6220                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6221         }
6222         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6223                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6224                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6225         }
6226         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6227                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6228                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6229         }
6230         if (oldval != val)
6231                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6232
6233         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6234         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6235         if (!event.msg_buf)
6236                 return;
6237
6238         do {
6239                 ret = i40e_clean_arq_element(hw, &event, &pending);
6240                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6241                         break;
6242                 else if (ret) {
6243                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6244                         break;
6245                 }
6246
6247                 opcode = le16_to_cpu(event.desc.opcode);
6248                 switch (opcode) {
6249
6250                 case i40e_aqc_opc_get_link_status:
6251                         i40e_handle_link_event(pf, &event);
6252                         break;
6253                 case i40e_aqc_opc_send_msg_to_pf:
6254                         ret = i40e_vc_process_vf_msg(pf,
6255                                         le16_to_cpu(event.desc.retval),
6256                                         le32_to_cpu(event.desc.cookie_high),
6257                                         le32_to_cpu(event.desc.cookie_low),
6258                                         event.msg_buf,
6259                                         event.msg_len);
6260                         break;
6261                 case i40e_aqc_opc_lldp_update_mib:
6262                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6263 #ifdef CONFIG_I40E_DCB
6264                         rtnl_lock();
6265                         ret = i40e_handle_lldp_event(pf, &event);
6266                         rtnl_unlock();
6267 #endif /* CONFIG_I40E_DCB */
6268                         break;
6269                 case i40e_aqc_opc_event_lan_overflow:
6270                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6271                         i40e_handle_lan_overflow_event(pf, &event);
6272                         break;
6273                 case i40e_aqc_opc_send_msg_to_peer:
6274                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6275                         break;
6276                 case i40e_aqc_opc_nvm_erase:
6277                 case i40e_aqc_opc_nvm_update:
6278                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6279                         break;
6280                 default:
6281                         dev_info(&pf->pdev->dev,
6282                                  "ARQ Error: Unknown event 0x%04x received\n",
6283                                  opcode);
6284                         break;
6285                 }
6286         } while (pending && (i++ < pf->adminq_work_limit));
6287
6288         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6289         /* re-enable Admin queue interrupt cause */
6290         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6291         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6292         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6293         i40e_flush(hw);
6294
6295         kfree(event.msg_buf);
6296 }
6297
6298 /**
6299  * i40e_verify_eeprom - make sure eeprom is good to use
6300  * @pf: board private structure
6301  **/
6302 static void i40e_verify_eeprom(struct i40e_pf *pf)
6303 {
6304         int err;
6305
6306         err = i40e_diag_eeprom_test(&pf->hw);
6307         if (err) {
6308                 /* retry in case of garbage read */
6309                 err = i40e_diag_eeprom_test(&pf->hw);
6310                 if (err) {
6311                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6312                                  err);
6313                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6314                 }
6315         }
6316
6317         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6318                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6319                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6320         }
6321 }
6322
6323 /**
6324  * i40e_enable_pf_switch_lb
6325  * @pf: pointer to the PF structure
6326  *
6327  * enable switch loop back or die - no point in a return value
6328  **/
6329 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6330 {
6331         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6332         struct i40e_vsi_context ctxt;
6333         int ret;
6334
6335         ctxt.seid = pf->main_vsi_seid;
6336         ctxt.pf_num = pf->hw.pf_id;
6337         ctxt.vf_num = 0;
6338         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6339         if (ret) {
6340                 dev_info(&pf->pdev->dev,
6341                          "couldn't get PF vsi config, err %s aq_err %s\n",
6342                          i40e_stat_str(&pf->hw, ret),
6343                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6344                 return;
6345         }
6346         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6347         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6348         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6349
6350         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6351         if (ret) {
6352                 dev_info(&pf->pdev->dev,
6353                          "update vsi switch failed, err %s aq_err %s\n",
6354                          i40e_stat_str(&pf->hw, ret),
6355                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6356         }
6357 }
6358
6359 /**
6360  * i40e_disable_pf_switch_lb
6361  * @pf: pointer to the PF structure
6362  *
6363  * disable switch loop back or die - no point in a return value
6364  **/
6365 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6366 {
6367         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6368         struct i40e_vsi_context ctxt;
6369         int ret;
6370
6371         ctxt.seid = pf->main_vsi_seid;
6372         ctxt.pf_num = pf->hw.pf_id;
6373         ctxt.vf_num = 0;
6374         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6375         if (ret) {
6376                 dev_info(&pf->pdev->dev,
6377                          "couldn't get PF vsi config, err %s aq_err %s\n",
6378                          i40e_stat_str(&pf->hw, ret),
6379                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6380                 return;
6381         }
6382         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6383         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6384         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6385
6386         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6387         if (ret) {
6388                 dev_info(&pf->pdev->dev,
6389                          "update vsi switch failed, err %s aq_err %s\n",
6390                          i40e_stat_str(&pf->hw, ret),
6391                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6392         }
6393 }
6394
6395 /**
6396  * i40e_config_bridge_mode - Configure the HW bridge mode
6397  * @veb: pointer to the bridge instance
6398  *
6399  * Configure the loop back mode for the LAN VSI that is downlink to the
6400  * specified HW bridge instance. It is expected this function is called
6401  * when a new HW bridge is instantiated.
6402  **/
6403 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6404 {
6405         struct i40e_pf *pf = veb->pf;
6406
6407         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6408                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6409                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6410         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6411                 i40e_disable_pf_switch_lb(pf);
6412         else
6413                 i40e_enable_pf_switch_lb(pf);
6414 }
6415
6416 /**
6417  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6418  * @veb: pointer to the VEB instance
6419  *
6420  * This is a recursive function that first builds the attached VSIs then
6421  * recurses in to build the next layer of VEB.  We track the connections
6422  * through our own index numbers because the seid's from the HW could
6423  * change across the reset.
6424  **/
6425 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6426 {
6427         struct i40e_vsi *ctl_vsi = NULL;
6428         struct i40e_pf *pf = veb->pf;
6429         int v, veb_idx;
6430         int ret;
6431
6432         /* build VSI that owns this VEB, temporarily attached to base VEB */
6433         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6434                 if (pf->vsi[v] &&
6435                     pf->vsi[v]->veb_idx == veb->idx &&
6436                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6437                         ctl_vsi = pf->vsi[v];
6438                         break;
6439                 }
6440         }
6441         if (!ctl_vsi) {
6442                 dev_info(&pf->pdev->dev,
6443                          "missing owner VSI for veb_idx %d\n", veb->idx);
6444                 ret = -ENOENT;
6445                 goto end_reconstitute;
6446         }
6447         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6448                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6449         ret = i40e_add_vsi(ctl_vsi);
6450         if (ret) {
6451                 dev_info(&pf->pdev->dev,
6452                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6453                          veb->idx, ret);
6454                 goto end_reconstitute;
6455         }
6456         i40e_vsi_reset_stats(ctl_vsi);
6457
6458         /* create the VEB in the switch and move the VSI onto the VEB */
6459         ret = i40e_add_veb(veb, ctl_vsi);
6460         if (ret)
6461                 goto end_reconstitute;
6462
6463         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6464                 veb->bridge_mode = BRIDGE_MODE_VEB;
6465         else
6466                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6467         i40e_config_bridge_mode(veb);
6468
6469         /* create the remaining VSIs attached to this VEB */
6470         for (v = 0; v < pf->num_alloc_vsi; v++) {
6471                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6472                         continue;
6473
6474                 if (pf->vsi[v]->veb_idx == veb->idx) {
6475                         struct i40e_vsi *vsi = pf->vsi[v];
6476
6477                         vsi->uplink_seid = veb->seid;
6478                         ret = i40e_add_vsi(vsi);
6479                         if (ret) {
6480                                 dev_info(&pf->pdev->dev,
6481                                          "rebuild of vsi_idx %d failed: %d\n",
6482                                          v, ret);
6483                                 goto end_reconstitute;
6484                         }
6485                         i40e_vsi_reset_stats(vsi);
6486                 }
6487         }
6488
6489         /* create any VEBs attached to this VEB - RECURSION */
6490         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6491                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6492                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6493                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6494                         if (ret)
6495                                 break;
6496                 }
6497         }
6498
6499 end_reconstitute:
6500         return ret;
6501 }
6502
6503 /**
6504  * i40e_get_capabilities - get info about the HW
6505  * @pf: the PF struct
6506  **/
6507 static int i40e_get_capabilities(struct i40e_pf *pf)
6508 {
6509         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6510         u16 data_size;
6511         int buf_len;
6512         int err;
6513
6514         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6515         do {
6516                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6517                 if (!cap_buf)
6518                         return -ENOMEM;
6519
6520                 /* this loads the data into the hw struct for us */
6521                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6522                                             &data_size,
6523                                             i40e_aqc_opc_list_func_capabilities,
6524                                             NULL);
6525                 /* data loaded, buffer no longer needed */
6526                 kfree(cap_buf);
6527
6528                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6529                         /* retry with a larger buffer */
6530                         buf_len = data_size;
6531                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6532                         dev_info(&pf->pdev->dev,
6533                                  "capability discovery failed, err %s aq_err %s\n",
6534                                  i40e_stat_str(&pf->hw, err),
6535                                  i40e_aq_str(&pf->hw,
6536                                              pf->hw.aq.asq_last_status));
6537                         return -ENODEV;
6538                 }
6539         } while (err);
6540
6541         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6542                 dev_info(&pf->pdev->dev,
6543                          "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",
6544                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6545                          pf->hw.func_caps.num_msix_vectors,
6546                          pf->hw.func_caps.num_msix_vectors_vf,
6547                          pf->hw.func_caps.fd_filters_guaranteed,
6548                          pf->hw.func_caps.fd_filters_best_effort,
6549                          pf->hw.func_caps.num_tx_qp,
6550                          pf->hw.func_caps.num_vsis);
6551
6552 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6553                        + pf->hw.func_caps.num_vfs)
6554         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6555                 dev_info(&pf->pdev->dev,
6556                          "got num_vsis %d, setting num_vsis to %d\n",
6557                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6558                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6559         }
6560
6561         return 0;
6562 }
6563
6564 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6565
6566 /**
6567  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6568  * @pf: board private structure
6569  **/
6570 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6571 {
6572         struct i40e_vsi *vsi;
6573         int i;
6574
6575         /* quick workaround for an NVM issue that leaves a critical register
6576          * uninitialized
6577          */
6578         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6579                 static const u32 hkey[] = {
6580                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6581                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6582                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6583                         0x95b3a76d};
6584
6585                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6586                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6587         }
6588
6589         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6590                 return;
6591
6592         /* find existing VSI and see if it needs configuring */
6593         vsi = NULL;
6594         for (i = 0; i < pf->num_alloc_vsi; i++) {
6595                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6596                         vsi = pf->vsi[i];
6597                         break;
6598                 }
6599         }
6600
6601         /* create a new VSI if none exists */
6602         if (!vsi) {
6603                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6604                                      pf->vsi[pf->lan_vsi]->seid, 0);
6605                 if (!vsi) {
6606                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6607                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6608                         return;
6609                 }
6610         }
6611
6612         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6613 }
6614
6615 /**
6616  * i40e_fdir_teardown - release the Flow Director resources
6617  * @pf: board private structure
6618  **/
6619 static void i40e_fdir_teardown(struct i40e_pf *pf)
6620 {
6621         int i;
6622
6623         i40e_fdir_filter_exit(pf);
6624         for (i = 0; i < pf->num_alloc_vsi; i++) {
6625                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6626                         i40e_vsi_release(pf->vsi[i]);
6627                         break;
6628                 }
6629         }
6630 }
6631
6632 /**
6633  * i40e_prep_for_reset - prep for the core to reset
6634  * @pf: board private structure
6635  *
6636  * Close up the VFs and other things in prep for PF Reset.
6637   **/
6638 static void i40e_prep_for_reset(struct i40e_pf *pf)
6639 {
6640         struct i40e_hw *hw = &pf->hw;
6641         i40e_status ret = 0;
6642         u32 v;
6643
6644         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6645         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6646                 return;
6647
6648         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6649
6650         /* quiesce the VSIs and their queues that are not already DOWN */
6651         i40e_pf_quiesce_all_vsi(pf);
6652
6653         for (v = 0; v < pf->num_alloc_vsi; v++) {
6654                 if (pf->vsi[v])
6655                         pf->vsi[v]->seid = 0;
6656         }
6657
6658         i40e_shutdown_adminq(&pf->hw);
6659
6660         /* call shutdown HMC */
6661         if (hw->hmc.hmc_obj) {
6662                 ret = i40e_shutdown_lan_hmc(hw);
6663                 if (ret)
6664                         dev_warn(&pf->pdev->dev,
6665                                  "shutdown_lan_hmc failed: %d\n", ret);
6666         }
6667 }
6668
6669 /**
6670  * i40e_send_version - update firmware with driver version
6671  * @pf: PF struct
6672  */
6673 static void i40e_send_version(struct i40e_pf *pf)
6674 {
6675         struct i40e_driver_version dv;
6676
6677         dv.major_version = DRV_VERSION_MAJOR;
6678         dv.minor_version = DRV_VERSION_MINOR;
6679         dv.build_version = DRV_VERSION_BUILD;
6680         dv.subbuild_version = 0;
6681         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6682         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6683 }
6684
6685 /**
6686  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6687  * @pf: board private structure
6688  * @reinit: if the Main VSI needs to re-initialized.
6689  **/
6690 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6691 {
6692         struct i40e_hw *hw = &pf->hw;
6693         u8 set_fc_aq_fail = 0;
6694         i40e_status ret;
6695         u32 val;
6696         u32 v;
6697
6698         /* Now we wait for GRST to settle out.
6699          * We don't have to delete the VEBs or VSIs from the hw switch
6700          * because the reset will make them disappear.
6701          */
6702         ret = i40e_pf_reset(hw);
6703         if (ret) {
6704                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6705                 set_bit(__I40E_RESET_FAILED, &pf->state);
6706                 goto clear_recovery;
6707         }
6708         pf->pfr_count++;
6709
6710         if (test_bit(__I40E_DOWN, &pf->state))
6711                 goto clear_recovery;
6712         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6713
6714         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6715         ret = i40e_init_adminq(&pf->hw);
6716         if (ret) {
6717                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6718                          i40e_stat_str(&pf->hw, ret),
6719                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6720                 goto clear_recovery;
6721         }
6722
6723         /* re-verify the eeprom if we just had an EMP reset */
6724         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6725                 i40e_verify_eeprom(pf);
6726
6727         i40e_clear_pxe_mode(hw);
6728         ret = i40e_get_capabilities(pf);
6729         if (ret)
6730                 goto end_core_reset;
6731
6732         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6733                                 hw->func_caps.num_rx_qp,
6734                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6735         if (ret) {
6736                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6737                 goto end_core_reset;
6738         }
6739         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6740         if (ret) {
6741                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6742                 goto end_core_reset;
6743         }
6744
6745 #ifdef CONFIG_I40E_DCB
6746         ret = i40e_init_pf_dcb(pf);
6747         if (ret) {
6748                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6749                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6750                 /* Continue without DCB enabled */
6751         }
6752 #endif /* CONFIG_I40E_DCB */
6753 #ifdef I40E_FCOE
6754         i40e_init_pf_fcoe(pf);
6755
6756 #endif
6757         /* do basic switch setup */
6758         ret = i40e_setup_pf_switch(pf, reinit);
6759         if (ret)
6760                 goto end_core_reset;
6761
6762         /* driver is only interested in link up/down and module qualification
6763          * reports from firmware
6764          */
6765         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6766                                        I40E_AQ_EVENT_LINK_UPDOWN |
6767                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6768         if (ret)
6769                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6770                          i40e_stat_str(&pf->hw, ret),
6771                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6772
6773         /* make sure our flow control settings are restored */
6774         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6775         if (ret)
6776                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6777                         i40e_stat_str(&pf->hw, ret),
6778                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6779
6780         /* Rebuild the VSIs and VEBs that existed before reset.
6781          * They are still in our local switch element arrays, so only
6782          * need to rebuild the switch model in the HW.
6783          *
6784          * If there were VEBs but the reconstitution failed, we'll try
6785          * try to recover minimal use by getting the basic PF VSI working.
6786          */
6787         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6788                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6789                 /* find the one VEB connected to the MAC, and find orphans */
6790                 for (v = 0; v < I40E_MAX_VEB; v++) {
6791                         if (!pf->veb[v])
6792                                 continue;
6793
6794                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6795                             pf->veb[v]->uplink_seid == 0) {
6796                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6797
6798                                 if (!ret)
6799                                         continue;
6800
6801                                 /* If Main VEB failed, we're in deep doodoo,
6802                                  * so give up rebuilding the switch and set up
6803                                  * for minimal rebuild of PF VSI.
6804                                  * If orphan failed, we'll report the error
6805                                  * but try to keep going.
6806                                  */
6807                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6808                                         dev_info(&pf->pdev->dev,
6809                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6810                                                  ret);
6811                                         pf->vsi[pf->lan_vsi]->uplink_seid
6812                                                                 = pf->mac_seid;
6813                                         break;
6814                                 } else if (pf->veb[v]->uplink_seid == 0) {
6815                                         dev_info(&pf->pdev->dev,
6816                                                  "rebuild of orphan VEB failed: %d\n",
6817                                                  ret);
6818                                 }
6819                         }
6820                 }
6821         }
6822
6823         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6824                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6825                 /* no VEB, so rebuild only the Main VSI */
6826                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6827                 if (ret) {
6828                         dev_info(&pf->pdev->dev,
6829                                  "rebuild of Main VSI failed: %d\n", ret);
6830                         goto end_core_reset;
6831                 }
6832         }
6833
6834         /* Reconfigure hardware for allowing smaller MSS in the case
6835          * of TSO, so that we avoid the MDD being fired and causing
6836          * a reset in the case of small MSS+TSO.
6837          */
6838 #define I40E_REG_MSS          0x000E64DC
6839 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6840 #define I40E_64BYTE_MSS       0x400000
6841         val = rd32(hw, I40E_REG_MSS);
6842         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6843                 val &= ~I40E_REG_MSS_MIN_MASK;
6844                 val |= I40E_64BYTE_MSS;
6845                 wr32(hw, I40E_REG_MSS, val);
6846         }
6847
6848         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6849             (pf->hw.aq.fw_maj_ver < 4)) {
6850                 msleep(75);
6851                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6852                 if (ret)
6853                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6854                                  i40e_stat_str(&pf->hw, ret),
6855                                  i40e_aq_str(&pf->hw,
6856                                              pf->hw.aq.asq_last_status));
6857         }
6858         /* reinit the misc interrupt */
6859         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6860                 ret = i40e_setup_misc_vector(pf);
6861
6862         /* Add a filter to drop all Flow control frames from any VSI from being
6863          * transmitted. By doing so we stop a malicious VF from sending out
6864          * PAUSE or PFC frames and potentially controlling traffic for other
6865          * PF/VF VSIs.
6866          * The FW can still send Flow control frames if enabled.
6867          */
6868         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6869                                                        pf->main_vsi_seid);
6870
6871         /* restart the VSIs that were rebuilt and running before the reset */
6872         i40e_pf_unquiesce_all_vsi(pf);
6873
6874         if (pf->num_alloc_vfs) {
6875                 for (v = 0; v < pf->num_alloc_vfs; v++)
6876                         i40e_reset_vf(&pf->vf[v], true);
6877         }
6878
6879         /* tell the firmware that we're starting */
6880         i40e_send_version(pf);
6881
6882 end_core_reset:
6883         clear_bit(__I40E_RESET_FAILED, &pf->state);
6884 clear_recovery:
6885         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6886 }
6887
6888 /**
6889  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6890  * @pf: board private structure
6891  *
6892  * Close up the VFs and other things in prep for a Core Reset,
6893  * then get ready to rebuild the world.
6894  **/
6895 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6896 {
6897         i40e_prep_for_reset(pf);
6898         i40e_reset_and_rebuild(pf, false);
6899 }
6900
6901 /**
6902  * i40e_handle_mdd_event
6903  * @pf: pointer to the PF structure
6904  *
6905  * Called from the MDD irq handler to identify possibly malicious vfs
6906  **/
6907 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6908 {
6909         struct i40e_hw *hw = &pf->hw;
6910         bool mdd_detected = false;
6911         bool pf_mdd_detected = false;
6912         struct i40e_vf *vf;
6913         u32 reg;
6914         int i;
6915
6916         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6917                 return;
6918
6919         /* find what triggered the MDD event */
6920         reg = rd32(hw, I40E_GL_MDET_TX);
6921         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6922                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6923                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6924                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6925                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6926                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6927                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6928                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6929                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6930                                 pf->hw.func_caps.base_queue;
6931                 if (netif_msg_tx_err(pf))
6932                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6933                                  event, queue, pf_num, vf_num);
6934                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6935                 mdd_detected = true;
6936         }
6937         reg = rd32(hw, I40E_GL_MDET_RX);
6938         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6939                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6940                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6941                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6942                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6943                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6944                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6945                                 pf->hw.func_caps.base_queue;
6946                 if (netif_msg_rx_err(pf))
6947                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6948                                  event, queue, func);
6949                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6950                 mdd_detected = true;
6951         }
6952
6953         if (mdd_detected) {
6954                 reg = rd32(hw, I40E_PF_MDET_TX);
6955                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6956                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6957                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6958                         pf_mdd_detected = true;
6959                 }
6960                 reg = rd32(hw, I40E_PF_MDET_RX);
6961                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6962                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6963                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6964                         pf_mdd_detected = true;
6965                 }
6966                 /* Queue belongs to the PF, initiate a reset */
6967                 if (pf_mdd_detected) {
6968                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6969                         i40e_service_event_schedule(pf);
6970                 }
6971         }
6972
6973         /* see if one of the VFs needs its hand slapped */
6974         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6975                 vf = &(pf->vf[i]);
6976                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6977                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6978                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6979                         vf->num_mdd_events++;
6980                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6981                                  i);
6982                 }
6983
6984                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6985                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6986                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6987                         vf->num_mdd_events++;
6988                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6989                                  i);
6990                 }
6991
6992                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6993                         dev_info(&pf->pdev->dev,
6994                                  "Too many MDD events on VF %d, disabled\n", i);
6995                         dev_info(&pf->pdev->dev,
6996                                  "Use PF Control I/F to re-enable the VF\n");
6997                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6998                 }
6999         }
7000
7001         /* re-enable mdd interrupt cause */
7002         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7003         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7004         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7005         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7006         i40e_flush(hw);
7007 }
7008
7009 #ifdef CONFIG_I40E_VXLAN
7010 /**
7011  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
7012  * @pf: board private structure
7013  **/
7014 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
7015 {
7016         struct i40e_hw *hw = &pf->hw;
7017         i40e_status ret;
7018         __be16 port;
7019         int i;
7020
7021         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
7022                 return;
7023
7024         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
7025
7026         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7027                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
7028                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
7029                         port = pf->vxlan_ports[i];
7030                         if (port)
7031                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7032                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
7033                                                      NULL, NULL);
7034                         else
7035                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7036
7037                         if (ret) {
7038                                 dev_info(&pf->pdev->dev,
7039                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
7040                                          port ? "add" : "delete",
7041                                          ntohs(port), i,
7042                                          i40e_stat_str(&pf->hw, ret),
7043                                          i40e_aq_str(&pf->hw,
7044                                                     pf->hw.aq.asq_last_status));
7045                                 pf->vxlan_ports[i] = 0;
7046                         }
7047                 }
7048         }
7049 }
7050
7051 #endif
7052 /**
7053  * i40e_service_task - Run the driver's async subtasks
7054  * @work: pointer to work_struct containing our data
7055  **/
7056 static void i40e_service_task(struct work_struct *work)
7057 {
7058         struct i40e_pf *pf = container_of(work,
7059                                           struct i40e_pf,
7060                                           service_task);
7061         unsigned long start_time = jiffies;
7062
7063         /* don't bother with service tasks if a reset is in progress */
7064         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7065                 i40e_service_event_complete(pf);
7066                 return;
7067         }
7068
7069         i40e_detect_recover_hung(pf);
7070         i40e_reset_subtask(pf);
7071         i40e_handle_mdd_event(pf);
7072         i40e_vc_process_vflr_event(pf);
7073         i40e_watchdog_subtask(pf);
7074         i40e_fdir_reinit_subtask(pf);
7075         i40e_sync_filters_subtask(pf);
7076 #ifdef CONFIG_I40E_VXLAN
7077         i40e_sync_vxlan_filters_subtask(pf);
7078 #endif
7079         i40e_clean_adminq_subtask(pf);
7080
7081         i40e_service_event_complete(pf);
7082
7083         /* If the tasks have taken longer than one timer cycle or there
7084          * is more work to be done, reschedule the service task now
7085          * rather than wait for the timer to tick again.
7086          */
7087         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7088             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7089             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7090             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7091                 i40e_service_event_schedule(pf);
7092 }
7093
7094 /**
7095  * i40e_service_timer - timer callback
7096  * @data: pointer to PF struct
7097  **/
7098 static void i40e_service_timer(unsigned long data)
7099 {
7100         struct i40e_pf *pf = (struct i40e_pf *)data;
7101
7102         mod_timer(&pf->service_timer,
7103                   round_jiffies(jiffies + pf->service_timer_period));
7104         i40e_service_event_schedule(pf);
7105 }
7106
7107 /**
7108  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7109  * @vsi: the VSI being configured
7110  **/
7111 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7112 {
7113         struct i40e_pf *pf = vsi->back;
7114
7115         switch (vsi->type) {
7116         case I40E_VSI_MAIN:
7117                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7118                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7119                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7120                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7121                         vsi->num_q_vectors = pf->num_lan_msix;
7122                 else
7123                         vsi->num_q_vectors = 1;
7124
7125                 break;
7126
7127         case I40E_VSI_FDIR:
7128                 vsi->alloc_queue_pairs = 1;
7129                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7130                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7131                 vsi->num_q_vectors = 1;
7132                 break;
7133
7134         case I40E_VSI_VMDQ2:
7135                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7136                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7137                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7138                 vsi->num_q_vectors = pf->num_vmdq_msix;
7139                 break;
7140
7141         case I40E_VSI_SRIOV:
7142                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7143                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7144                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7145                 break;
7146
7147 #ifdef I40E_FCOE
7148         case I40E_VSI_FCOE:
7149                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7150                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7151                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7152                 vsi->num_q_vectors = pf->num_fcoe_msix;
7153                 break;
7154
7155 #endif /* I40E_FCOE */
7156         default:
7157                 WARN_ON(1);
7158                 return -ENODATA;
7159         }
7160
7161         return 0;
7162 }
7163
7164 /**
7165  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7166  * @type: VSI pointer
7167  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7168  *
7169  * On error: returns error code (negative)
7170  * On success: returns 0
7171  **/
7172 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7173 {
7174         int size;
7175         int ret = 0;
7176
7177         /* allocate memory for both Tx and Rx ring pointers */
7178         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7179         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7180         if (!vsi->tx_rings)
7181                 return -ENOMEM;
7182         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7183
7184         if (alloc_qvectors) {
7185                 /* allocate memory for q_vector pointers */
7186                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7187                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7188                 if (!vsi->q_vectors) {
7189                         ret = -ENOMEM;
7190                         goto err_vectors;
7191                 }
7192         }
7193         return ret;
7194
7195 err_vectors:
7196         kfree(vsi->tx_rings);
7197         return ret;
7198 }
7199
7200 /**
7201  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7202  * @pf: board private structure
7203  * @type: type of VSI
7204  *
7205  * On error: returns error code (negative)
7206  * On success: returns vsi index in PF (positive)
7207  **/
7208 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7209 {
7210         int ret = -ENODEV;
7211         struct i40e_vsi *vsi;
7212         int vsi_idx;
7213         int i;
7214
7215         /* Need to protect the allocation of the VSIs at the PF level */
7216         mutex_lock(&pf->switch_mutex);
7217
7218         /* VSI list may be fragmented if VSI creation/destruction has
7219          * been happening.  We can afford to do a quick scan to look
7220          * for any free VSIs in the list.
7221          *
7222          * find next empty vsi slot, looping back around if necessary
7223          */
7224         i = pf->next_vsi;
7225         while (i < pf->num_alloc_vsi && pf->vsi[i])
7226                 i++;
7227         if (i >= pf->num_alloc_vsi) {
7228                 i = 0;
7229                 while (i < pf->next_vsi && pf->vsi[i])
7230                         i++;
7231         }
7232
7233         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7234                 vsi_idx = i;             /* Found one! */
7235         } else {
7236                 ret = -ENODEV;
7237                 goto unlock_pf;  /* out of VSI slots! */
7238         }
7239         pf->next_vsi = ++i;
7240
7241         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7242         if (!vsi) {
7243                 ret = -ENOMEM;
7244                 goto unlock_pf;
7245         }
7246         vsi->type = type;
7247         vsi->back = pf;
7248         set_bit(__I40E_DOWN, &vsi->state);
7249         vsi->flags = 0;
7250         vsi->idx = vsi_idx;
7251         vsi->rx_itr_setting = pf->rx_itr_default;
7252         vsi->tx_itr_setting = pf->tx_itr_default;
7253         vsi->int_rate_limit = 0;
7254         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7255                                 pf->rss_table_size : 64;
7256         vsi->netdev_registered = false;
7257         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7258         INIT_LIST_HEAD(&vsi->mac_filter_list);
7259         vsi->irqs_ready = false;
7260
7261         ret = i40e_set_num_rings_in_vsi(vsi);
7262         if (ret)
7263                 goto err_rings;
7264
7265         ret = i40e_vsi_alloc_arrays(vsi, true);
7266         if (ret)
7267                 goto err_rings;
7268
7269         /* Setup default MSIX irq handler for VSI */
7270         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7271
7272         /* Initialize VSI lock */
7273         spin_lock_init(&vsi->mac_filter_list_lock);
7274         pf->vsi[vsi_idx] = vsi;
7275         ret = vsi_idx;
7276         goto unlock_pf;
7277
7278 err_rings:
7279         pf->next_vsi = i - 1;
7280         kfree(vsi);
7281 unlock_pf:
7282         mutex_unlock(&pf->switch_mutex);
7283         return ret;
7284 }
7285
7286 /**
7287  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7288  * @type: VSI pointer
7289  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7290  *
7291  * On error: returns error code (negative)
7292  * On success: returns 0
7293  **/
7294 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7295 {
7296         /* free the ring and vector containers */
7297         if (free_qvectors) {
7298                 kfree(vsi->q_vectors);
7299                 vsi->q_vectors = NULL;
7300         }
7301         kfree(vsi->tx_rings);
7302         vsi->tx_rings = NULL;
7303         vsi->rx_rings = NULL;
7304 }
7305
7306 /**
7307  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7308  * and lookup table
7309  * @vsi: Pointer to VSI structure
7310  */
7311 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7312 {
7313         if (!vsi)
7314                 return;
7315
7316         kfree(vsi->rss_hkey_user);
7317         vsi->rss_hkey_user = NULL;
7318
7319         kfree(vsi->rss_lut_user);
7320         vsi->rss_lut_user = NULL;
7321 }
7322
7323 /**
7324  * i40e_vsi_clear - Deallocate the VSI provided
7325  * @vsi: the VSI being un-configured
7326  **/
7327 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7328 {
7329         struct i40e_pf *pf;
7330
7331         if (!vsi)
7332                 return 0;
7333
7334         if (!vsi->back)
7335                 goto free_vsi;
7336         pf = vsi->back;
7337
7338         mutex_lock(&pf->switch_mutex);
7339         if (!pf->vsi[vsi->idx]) {
7340                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7341                         vsi->idx, vsi->idx, vsi, vsi->type);
7342                 goto unlock_vsi;
7343         }
7344
7345         if (pf->vsi[vsi->idx] != vsi) {
7346                 dev_err(&pf->pdev->dev,
7347                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7348                         pf->vsi[vsi->idx]->idx,
7349                         pf->vsi[vsi->idx],
7350                         pf->vsi[vsi->idx]->type,
7351                         vsi->idx, vsi, vsi->type);
7352                 goto unlock_vsi;
7353         }
7354
7355         /* updates the PF for this cleared vsi */
7356         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7357         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7358
7359         i40e_vsi_free_arrays(vsi, true);
7360         i40e_clear_rss_config_user(vsi);
7361
7362         pf->vsi[vsi->idx] = NULL;
7363         if (vsi->idx < pf->next_vsi)
7364                 pf->next_vsi = vsi->idx;
7365
7366 unlock_vsi:
7367         mutex_unlock(&pf->switch_mutex);
7368 free_vsi:
7369         kfree(vsi);
7370
7371         return 0;
7372 }
7373
7374 /**
7375  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7376  * @vsi: the VSI being cleaned
7377  **/
7378 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7379 {
7380         int i;
7381
7382         if (vsi->tx_rings && vsi->tx_rings[0]) {
7383                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7384                         kfree_rcu(vsi->tx_rings[i], rcu);
7385                         vsi->tx_rings[i] = NULL;
7386                         vsi->rx_rings[i] = NULL;
7387                 }
7388         }
7389 }
7390
7391 /**
7392  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7393  * @vsi: the VSI being configured
7394  **/
7395 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7396 {
7397         struct i40e_ring *tx_ring, *rx_ring;
7398         struct i40e_pf *pf = vsi->back;
7399         int i;
7400
7401         /* Set basic values in the rings to be used later during open() */
7402         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7403                 /* allocate space for both Tx and Rx in one shot */
7404                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7405                 if (!tx_ring)
7406                         goto err_out;
7407
7408                 tx_ring->queue_index = i;
7409                 tx_ring->reg_idx = vsi->base_queue + i;
7410                 tx_ring->ring_active = false;
7411                 tx_ring->vsi = vsi;
7412                 tx_ring->netdev = vsi->netdev;
7413                 tx_ring->dev = &pf->pdev->dev;
7414                 tx_ring->count = vsi->num_desc;
7415                 tx_ring->size = 0;
7416                 tx_ring->dcb_tc = 0;
7417                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7418                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7419                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7420                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7421                 vsi->tx_rings[i] = tx_ring;
7422
7423                 rx_ring = &tx_ring[1];
7424                 rx_ring->queue_index = i;
7425                 rx_ring->reg_idx = vsi->base_queue + i;
7426                 rx_ring->ring_active = false;
7427                 rx_ring->vsi = vsi;
7428                 rx_ring->netdev = vsi->netdev;
7429                 rx_ring->dev = &pf->pdev->dev;
7430                 rx_ring->count = vsi->num_desc;
7431                 rx_ring->size = 0;
7432                 rx_ring->dcb_tc = 0;
7433                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7434                         set_ring_16byte_desc_enabled(rx_ring);
7435                 else
7436                         clear_ring_16byte_desc_enabled(rx_ring);
7437                 vsi->rx_rings[i] = rx_ring;
7438         }
7439
7440         return 0;
7441
7442 err_out:
7443         i40e_vsi_clear_rings(vsi);
7444         return -ENOMEM;
7445 }
7446
7447 /**
7448  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7449  * @pf: board private structure
7450  * @vectors: the number of MSI-X vectors to request
7451  *
7452  * Returns the number of vectors reserved, or error
7453  **/
7454 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7455 {
7456         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7457                                         I40E_MIN_MSIX, vectors);
7458         if (vectors < 0) {
7459                 dev_info(&pf->pdev->dev,
7460                          "MSI-X vector reservation failed: %d\n", vectors);
7461                 vectors = 0;
7462         }
7463
7464         return vectors;
7465 }
7466
7467 /**
7468  * i40e_init_msix - Setup the MSIX capability
7469  * @pf: board private structure
7470  *
7471  * Work with the OS to set up the MSIX vectors needed.
7472  *
7473  * Returns the number of vectors reserved or negative on failure
7474  **/
7475 static int i40e_init_msix(struct i40e_pf *pf)
7476 {
7477         struct i40e_hw *hw = &pf->hw;
7478         int vectors_left;
7479         int v_budget, i;
7480         int v_actual;
7481
7482         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7483                 return -ENODEV;
7484
7485         /* The number of vectors we'll request will be comprised of:
7486          *   - Add 1 for "other" cause for Admin Queue events, etc.
7487          *   - The number of LAN queue pairs
7488          *      - Queues being used for RSS.
7489          *              We don't need as many as max_rss_size vectors.
7490          *              use rss_size instead in the calculation since that
7491          *              is governed by number of cpus in the system.
7492          *      - assumes symmetric Tx/Rx pairing
7493          *   - The number of VMDq pairs
7494 #ifdef I40E_FCOE
7495          *   - The number of FCOE qps.
7496 #endif
7497          * Once we count this up, try the request.
7498          *
7499          * If we can't get what we want, we'll simplify to nearly nothing
7500          * and try again.  If that still fails, we punt.
7501          */
7502         vectors_left = hw->func_caps.num_msix_vectors;
7503         v_budget = 0;
7504
7505         /* reserve one vector for miscellaneous handler */
7506         if (vectors_left) {
7507                 v_budget++;
7508                 vectors_left--;
7509         }
7510
7511         /* reserve vectors for the main PF traffic queues */
7512         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7513         vectors_left -= pf->num_lan_msix;
7514         v_budget += pf->num_lan_msix;
7515
7516         /* reserve one vector for sideband flow director */
7517         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7518                 if (vectors_left) {
7519                         v_budget++;
7520                         vectors_left--;
7521                 } else {
7522                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7523                 }
7524         }
7525
7526 #ifdef I40E_FCOE
7527         /* can we reserve enough for FCoE? */
7528         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7529                 if (!vectors_left)
7530                         pf->num_fcoe_msix = 0;
7531                 else if (vectors_left >= pf->num_fcoe_qps)
7532                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7533                 else
7534                         pf->num_fcoe_msix = 1;
7535                 v_budget += pf->num_fcoe_msix;
7536                 vectors_left -= pf->num_fcoe_msix;
7537         }
7538
7539 #endif
7540         /* any vectors left over go for VMDq support */
7541         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7542                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7543                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7544
7545                 /* if we're short on vectors for what's desired, we limit
7546                  * the queues per vmdq.  If this is still more than are
7547                  * available, the user will need to change the number of
7548                  * queues/vectors used by the PF later with the ethtool
7549                  * channels command
7550                  */
7551                 if (vmdq_vecs < vmdq_vecs_wanted)
7552                         pf->num_vmdq_qps = 1;
7553                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7554
7555                 v_budget += vmdq_vecs;
7556                 vectors_left -= vmdq_vecs;
7557         }
7558
7559         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7560                                    GFP_KERNEL);
7561         if (!pf->msix_entries)
7562                 return -ENOMEM;
7563
7564         for (i = 0; i < v_budget; i++)
7565                 pf->msix_entries[i].entry = i;
7566         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7567
7568         if (v_actual != v_budget) {
7569                 /* If we have limited resources, we will start with no vectors
7570                  * for the special features and then allocate vectors to some
7571                  * of these features based on the policy and at the end disable
7572                  * the features that did not get any vectors.
7573                  */
7574 #ifdef I40E_FCOE
7575                 pf->num_fcoe_qps = 0;
7576                 pf->num_fcoe_msix = 0;
7577 #endif
7578                 pf->num_vmdq_msix = 0;
7579         }
7580
7581         if (v_actual < I40E_MIN_MSIX) {
7582                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7583                 kfree(pf->msix_entries);
7584                 pf->msix_entries = NULL;
7585                 return -ENODEV;
7586
7587         } else if (v_actual == I40E_MIN_MSIX) {
7588                 /* Adjust for minimal MSIX use */
7589                 pf->num_vmdq_vsis = 0;
7590                 pf->num_vmdq_qps = 0;
7591                 pf->num_lan_qps = 1;
7592                 pf->num_lan_msix = 1;
7593
7594         } else if (v_actual != v_budget) {
7595                 int vec;
7596
7597                 /* reserve the misc vector */
7598                 vec = v_actual - 1;
7599
7600                 /* Scale vector usage down */
7601                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7602                 pf->num_vmdq_vsis = 1;
7603                 pf->num_vmdq_qps = 1;
7604                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7605
7606                 /* partition out the remaining vectors */
7607                 switch (vec) {
7608                 case 2:
7609                         pf->num_lan_msix = 1;
7610                         break;
7611                 case 3:
7612 #ifdef I40E_FCOE
7613                         /* give one vector to FCoE */
7614                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7615                                 pf->num_lan_msix = 1;
7616                                 pf->num_fcoe_msix = 1;
7617                         }
7618 #else
7619                         pf->num_lan_msix = 2;
7620 #endif
7621                         break;
7622                 default:
7623 #ifdef I40E_FCOE
7624                         /* give one vector to FCoE */
7625                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7626                                 pf->num_fcoe_msix = 1;
7627                                 vec--;
7628                         }
7629 #endif
7630                         /* give the rest to the PF */
7631                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7632                         break;
7633                 }
7634         }
7635
7636         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7637             (pf->num_vmdq_msix == 0)) {
7638                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7639                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7640         }
7641 #ifdef I40E_FCOE
7642
7643         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7644                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7645                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7646         }
7647 #endif
7648         return v_actual;
7649 }
7650
7651 /**
7652  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7653  * @vsi: the VSI being configured
7654  * @v_idx: index of the vector in the vsi struct
7655  *
7656  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7657  **/
7658 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7659 {
7660         struct i40e_q_vector *q_vector;
7661
7662         /* allocate q_vector */
7663         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7664         if (!q_vector)
7665                 return -ENOMEM;
7666
7667         q_vector->vsi = vsi;
7668         q_vector->v_idx = v_idx;
7669         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7670         if (vsi->netdev)
7671                 netif_napi_add(vsi->netdev, &q_vector->napi,
7672                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7673
7674         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7675         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7676
7677         /* tie q_vector and vsi together */
7678         vsi->q_vectors[v_idx] = q_vector;
7679
7680         return 0;
7681 }
7682
7683 /**
7684  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7685  * @vsi: the VSI being configured
7686  *
7687  * We allocate one q_vector per queue interrupt.  If allocation fails we
7688  * return -ENOMEM.
7689  **/
7690 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7691 {
7692         struct i40e_pf *pf = vsi->back;
7693         int v_idx, num_q_vectors;
7694         int err;
7695
7696         /* if not MSIX, give the one vector only to the LAN VSI */
7697         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7698                 num_q_vectors = vsi->num_q_vectors;
7699         else if (vsi == pf->vsi[pf->lan_vsi])
7700                 num_q_vectors = 1;
7701         else
7702                 return -EINVAL;
7703
7704         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7705                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7706                 if (err)
7707                         goto err_out;
7708         }
7709
7710         return 0;
7711
7712 err_out:
7713         while (v_idx--)
7714                 i40e_free_q_vector(vsi, v_idx);
7715
7716         return err;
7717 }
7718
7719 /**
7720  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7721  * @pf: board private structure to initialize
7722  **/
7723 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7724 {
7725         int vectors = 0;
7726         ssize_t size;
7727
7728         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7729                 vectors = i40e_init_msix(pf);
7730                 if (vectors < 0) {
7731                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7732 #ifdef I40E_FCOE
7733                                        I40E_FLAG_FCOE_ENABLED   |
7734 #endif
7735                                        I40E_FLAG_RSS_ENABLED    |
7736                                        I40E_FLAG_DCB_CAPABLE    |
7737                                        I40E_FLAG_SRIOV_ENABLED  |
7738                                        I40E_FLAG_FD_SB_ENABLED  |
7739                                        I40E_FLAG_FD_ATR_ENABLED |
7740                                        I40E_FLAG_VMDQ_ENABLED);
7741
7742                         /* rework the queue expectations without MSIX */
7743                         i40e_determine_queue_usage(pf);
7744                 }
7745         }
7746
7747         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7748             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7749                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7750                 vectors = pci_enable_msi(pf->pdev);
7751                 if (vectors < 0) {
7752                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7753                                  vectors);
7754                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7755                 }
7756                 vectors = 1;  /* one MSI or Legacy vector */
7757         }
7758
7759         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7760                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7761
7762         /* set up vector assignment tracking */
7763         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7764         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7765         if (!pf->irq_pile) {
7766                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7767                 return -ENOMEM;
7768         }
7769         pf->irq_pile->num_entries = vectors;
7770         pf->irq_pile->search_hint = 0;
7771
7772         /* track first vector for misc interrupts, ignore return */
7773         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7774
7775         return 0;
7776 }
7777
7778 /**
7779  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7780  * @pf: board private structure
7781  *
7782  * This sets up the handler for MSIX 0, which is used to manage the
7783  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7784  * when in MSI or Legacy interrupt mode.
7785  **/
7786 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7787 {
7788         struct i40e_hw *hw = &pf->hw;
7789         int err = 0;
7790
7791         /* Only request the irq if this is the first time through, and
7792          * not when we're rebuilding after a Reset
7793          */
7794         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7795                 err = request_irq(pf->msix_entries[0].vector,
7796                                   i40e_intr, 0, pf->int_name, pf);
7797                 if (err) {
7798                         dev_info(&pf->pdev->dev,
7799                                  "request_irq for %s failed: %d\n",
7800                                  pf->int_name, err);
7801                         return -EFAULT;
7802                 }
7803         }
7804
7805         i40e_enable_misc_int_causes(pf);
7806
7807         /* associate no queues to the misc vector */
7808         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7809         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7810
7811         i40e_flush(hw);
7812
7813         i40e_irq_dynamic_enable_icr0(pf);
7814
7815         return err;
7816 }
7817
7818 /**
7819  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7820  * @vsi: vsi structure
7821  * @seed: RSS hash seed
7822  **/
7823 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7824                               u8 *lut, u16 lut_size)
7825 {
7826         struct i40e_aqc_get_set_rss_key_data rss_key;
7827         struct i40e_pf *pf = vsi->back;
7828         struct i40e_hw *hw = &pf->hw;
7829         bool pf_lut = false;
7830         u8 *rss_lut;
7831         int ret, i;
7832
7833         memset(&rss_key, 0, sizeof(rss_key));
7834         memcpy(&rss_key, seed, sizeof(rss_key));
7835
7836         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7837         if (!rss_lut)
7838                 return -ENOMEM;
7839
7840         /* Populate the LUT with max no. of queues in round robin fashion */
7841         for (i = 0; i < vsi->rss_table_size; i++)
7842                 rss_lut[i] = i % vsi->rss_size;
7843
7844         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7845         if (ret) {
7846                 dev_info(&pf->pdev->dev,
7847                          "Cannot set RSS key, err %s aq_err %s\n",
7848                          i40e_stat_str(&pf->hw, ret),
7849                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7850                 goto config_rss_aq_out;
7851         }
7852
7853         if (vsi->type == I40E_VSI_MAIN)
7854                 pf_lut = true;
7855
7856         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7857                                   vsi->rss_table_size);
7858         if (ret)
7859                 dev_info(&pf->pdev->dev,
7860                          "Cannot set RSS lut, err %s aq_err %s\n",
7861                          i40e_stat_str(&pf->hw, ret),
7862                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7863
7864 config_rss_aq_out:
7865         kfree(rss_lut);
7866         return ret;
7867 }
7868
7869 /**
7870  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7871  * @vsi: VSI structure
7872  **/
7873 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7874 {
7875         u8 seed[I40E_HKEY_ARRAY_SIZE];
7876         struct i40e_pf *pf = vsi->back;
7877         u8 *lut;
7878         int ret;
7879
7880         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
7881                 return 0;
7882
7883         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
7884         if (!lut)
7885                 return -ENOMEM;
7886
7887         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
7888         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7889         vsi->rss_size = min_t(int, pf->alloc_rss_size, vsi->num_queue_pairs);
7890         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
7891         kfree(lut);
7892
7893         return ret;
7894 }
7895
7896 /**
7897  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
7898  * @vsi: Pointer to vsi structure
7899  * @seed: RSS hash seed
7900  * @lut: Lookup table
7901  * @lut_size: Lookup table size
7902  *
7903  * Returns 0 on success, negative on failure
7904  **/
7905 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
7906                                const u8 *lut, u16 lut_size)
7907 {
7908         struct i40e_pf *pf = vsi->back;
7909         struct i40e_hw *hw = &pf->hw;
7910         u8 i;
7911
7912         /* Fill out hash function seed */
7913         if (seed) {
7914                 u32 *seed_dw = (u32 *)seed;
7915
7916                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7917                         wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7918         }
7919
7920         if (lut) {
7921                 u32 *lut_dw = (u32 *)lut;
7922
7923                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
7924                         return -EINVAL;
7925
7926                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
7927                         wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
7928         }
7929         i40e_flush(hw);
7930
7931         return 0;
7932 }
7933
7934 /**
7935  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
7936  * @vsi: Pointer to VSI structure
7937  * @seed: Buffer to store the keys
7938  * @lut: Buffer to store the lookup table entries
7939  * @lut_size: Size of buffer to store the lookup table entries
7940  *
7941  * Returns 0 on success, negative on failure
7942  */
7943 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
7944                             u8 *lut, u16 lut_size)
7945 {
7946         struct i40e_pf *pf = vsi->back;
7947         struct i40e_hw *hw = &pf->hw;
7948         u16 i;
7949
7950         if (seed) {
7951                 u32 *seed_dw = (u32 *)seed;
7952
7953                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7954                         seed_dw[i] = rd32(hw, I40E_PFQF_HKEY(i));
7955         }
7956         if (lut) {
7957                 u32 *lut_dw = (u32 *)lut;
7958
7959                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
7960                         return -EINVAL;
7961                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
7962                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
7963         }
7964
7965         return 0;
7966 }
7967
7968 /**
7969  * i40e_config_rss - Configure RSS keys and lut
7970  * @vsi: Pointer to VSI structure
7971  * @seed: RSS hash seed
7972  * @lut: Lookup table
7973  * @lut_size: Lookup table size
7974  *
7975  * Returns 0 on success, negative on failure
7976  */
7977 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
7978 {
7979         struct i40e_pf *pf = vsi->back;
7980
7981         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7982                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
7983         else
7984                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
7985 }
7986
7987 /**
7988  * i40e_get_rss - Get RSS keys and lut
7989  * @vsi: Pointer to VSI structure
7990  * @seed: Buffer to store the keys
7991  * @lut: Buffer to store the lookup table entries
7992  * lut_size: Size of buffer to store the lookup table entries
7993  *
7994  * Returns 0 on success, negative on failure
7995  */
7996 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
7997 {
7998         return i40e_get_rss_reg(vsi, seed, lut, lut_size);
7999 }
8000
8001 /**
8002  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8003  * @pf: Pointer to board private structure
8004  * @lut: Lookup table
8005  * @rss_table_size: Lookup table size
8006  * @rss_size: Range of queue number for hashing
8007  */
8008 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8009                               u16 rss_table_size, u16 rss_size)
8010 {
8011         u16 i;
8012
8013         for (i = 0; i < rss_table_size; i++)
8014                 lut[i] = i % rss_size;
8015 }
8016
8017 /**
8018  * i40e_pf_config_rss - Prepare for RSS if used
8019  * @pf: board private structure
8020  **/
8021 static int i40e_pf_config_rss(struct i40e_pf *pf)
8022 {
8023         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8024         u8 seed[I40E_HKEY_ARRAY_SIZE];
8025         u8 *lut;
8026         struct i40e_hw *hw = &pf->hw;
8027         u32 reg_val;
8028         u64 hena;
8029         int ret;
8030
8031         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8032         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
8033                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
8034         hena |= i40e_pf_get_default_rss_hena(pf);
8035
8036         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
8037         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8038
8039         /* Determine the RSS table size based on the hardware capabilities */
8040         reg_val = rd32(hw, I40E_PFQF_CTL_0);
8041         reg_val = (pf->rss_table_size == 512) ?
8042                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8043                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8044         wr32(hw, I40E_PFQF_CTL_0, reg_val);
8045
8046         /* Determine the RSS size of the VSI */
8047         if (!vsi->rss_size)
8048                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8049                                       vsi->num_queue_pairs);
8050
8051         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8052         if (!lut)
8053                 return -ENOMEM;
8054
8055         /* Use user configured lut if there is one, otherwise use default */
8056         if (vsi->rss_lut_user)
8057                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8058         else
8059                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8060
8061         /* Use user configured hash key if there is one, otherwise
8062          * use default.
8063          */
8064         if (vsi->rss_hkey_user)
8065                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8066         else
8067                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8068         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8069         kfree(lut);
8070
8071         return ret;
8072 }
8073
8074 /**
8075  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8076  * @pf: board private structure
8077  * @queue_count: the requested queue count for rss.
8078  *
8079  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8080  * count which may be different from the requested queue count.
8081  **/
8082 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8083 {
8084         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8085         int new_rss_size;
8086
8087         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8088                 return 0;
8089
8090         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8091
8092         if (queue_count != vsi->num_queue_pairs) {
8093                 vsi->req_queue_pairs = queue_count;
8094                 i40e_prep_for_reset(pf);
8095
8096                 pf->alloc_rss_size = new_rss_size;
8097
8098                 i40e_reset_and_rebuild(pf, true);
8099
8100                 /* Discard the user configured hash keys and lut, if less
8101                  * queues are enabled.
8102                  */
8103                 if (queue_count < vsi->rss_size) {
8104                         i40e_clear_rss_config_user(vsi);
8105                         dev_dbg(&pf->pdev->dev,
8106                                 "discard user configured hash keys and lut\n");
8107                 }
8108
8109                 /* Reset vsi->rss_size, as number of enabled queues changed */
8110                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8111                                       vsi->num_queue_pairs);
8112
8113                 i40e_pf_config_rss(pf);
8114         }
8115         dev_info(&pf->pdev->dev, "RSS count/HW max RSS count:  %d/%d\n",
8116                  pf->alloc_rss_size, pf->rss_size_max);
8117         return pf->alloc_rss_size;
8118 }
8119
8120 /**
8121  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8122  * @pf: board private structure
8123  **/
8124 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8125 {
8126         i40e_status status;
8127         bool min_valid, max_valid;
8128         u32 max_bw, min_bw;
8129
8130         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8131                                            &min_valid, &max_valid);
8132
8133         if (!status) {
8134                 if (min_valid)
8135                         pf->npar_min_bw = min_bw;
8136                 if (max_valid)
8137                         pf->npar_max_bw = max_bw;
8138         }
8139
8140         return status;
8141 }
8142
8143 /**
8144  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8145  * @pf: board private structure
8146  **/
8147 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8148 {
8149         struct i40e_aqc_configure_partition_bw_data bw_data;
8150         i40e_status status;
8151
8152         /* Set the valid bit for this PF */
8153         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8154         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8155         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8156
8157         /* Set the new bandwidths */
8158         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8159
8160         return status;
8161 }
8162
8163 /**
8164  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8165  * @pf: board private structure
8166  **/
8167 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8168 {
8169         /* Commit temporary BW setting to permanent NVM image */
8170         enum i40e_admin_queue_err last_aq_status;
8171         i40e_status ret;
8172         u16 nvm_word;
8173
8174         if (pf->hw.partition_id != 1) {
8175                 dev_info(&pf->pdev->dev,
8176                          "Commit BW only works on partition 1! This is partition %d",
8177                          pf->hw.partition_id);
8178                 ret = I40E_NOT_SUPPORTED;
8179                 goto bw_commit_out;
8180         }
8181
8182         /* Acquire NVM for read access */
8183         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8184         last_aq_status = pf->hw.aq.asq_last_status;
8185         if (ret) {
8186                 dev_info(&pf->pdev->dev,
8187                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8188                          i40e_stat_str(&pf->hw, ret),
8189                          i40e_aq_str(&pf->hw, last_aq_status));
8190                 goto bw_commit_out;
8191         }
8192
8193         /* Read word 0x10 of NVM - SW compatibility word 1 */
8194         ret = i40e_aq_read_nvm(&pf->hw,
8195                                I40E_SR_NVM_CONTROL_WORD,
8196                                0x10, sizeof(nvm_word), &nvm_word,
8197                                false, NULL);
8198         /* Save off last admin queue command status before releasing
8199          * the NVM
8200          */
8201         last_aq_status = pf->hw.aq.asq_last_status;
8202         i40e_release_nvm(&pf->hw);
8203         if (ret) {
8204                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8205                          i40e_stat_str(&pf->hw, ret),
8206                          i40e_aq_str(&pf->hw, last_aq_status));
8207                 goto bw_commit_out;
8208         }
8209
8210         /* Wait a bit for NVM release to complete */
8211         msleep(50);
8212
8213         /* Acquire NVM for write access */
8214         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8215         last_aq_status = pf->hw.aq.asq_last_status;
8216         if (ret) {
8217                 dev_info(&pf->pdev->dev,
8218                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8219                          i40e_stat_str(&pf->hw, ret),
8220                          i40e_aq_str(&pf->hw, last_aq_status));
8221                 goto bw_commit_out;
8222         }
8223         /* Write it back out unchanged to initiate update NVM,
8224          * which will force a write of the shadow (alt) RAM to
8225          * the NVM - thus storing the bandwidth values permanently.
8226          */
8227         ret = i40e_aq_update_nvm(&pf->hw,
8228                                  I40E_SR_NVM_CONTROL_WORD,
8229                                  0x10, sizeof(nvm_word),
8230                                  &nvm_word, true, NULL);
8231         /* Save off last admin queue command status before releasing
8232          * the NVM
8233          */
8234         last_aq_status = pf->hw.aq.asq_last_status;
8235         i40e_release_nvm(&pf->hw);
8236         if (ret)
8237                 dev_info(&pf->pdev->dev,
8238                          "BW settings NOT SAVED, err %s aq_err %s\n",
8239                          i40e_stat_str(&pf->hw, ret),
8240                          i40e_aq_str(&pf->hw, last_aq_status));
8241 bw_commit_out:
8242
8243         return ret;
8244 }
8245
8246 /**
8247  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8248  * @pf: board private structure to initialize
8249  *
8250  * i40e_sw_init initializes the Adapter private data structure.
8251  * Fields are initialized based on PCI device information and
8252  * OS network device settings (MTU size).
8253  **/
8254 static int i40e_sw_init(struct i40e_pf *pf)
8255 {
8256         int err = 0;
8257         int size;
8258
8259         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8260                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8261         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
8262         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8263                 if (I40E_DEBUG_USER & debug)
8264                         pf->hw.debug_mask = debug;
8265                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8266                                                 I40E_DEFAULT_MSG_ENABLE);
8267         }
8268
8269         /* Set default capability flags */
8270         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8271                     I40E_FLAG_MSI_ENABLED     |
8272                     I40E_FLAG_LINK_POLLING_ENABLED |
8273                     I40E_FLAG_MSIX_ENABLED;
8274
8275         if (iommu_present(&pci_bus_type))
8276                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
8277         else
8278                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
8279
8280         /* Set default ITR */
8281         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8282         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8283
8284         /* Depending on PF configurations, it is possible that the RSS
8285          * maximum might end up larger than the available queues
8286          */
8287         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8288         pf->alloc_rss_size = 1;
8289         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8290         pf->rss_size_max = min_t(int, pf->rss_size_max,
8291                                  pf->hw.func_caps.num_tx_qp);
8292         if (pf->hw.func_caps.rss) {
8293                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8294                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8295                                            num_online_cpus());
8296         }
8297
8298         /* MFP mode enabled */
8299         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8300                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8301                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8302                 if (i40e_get_npar_bw_setting(pf))
8303                         dev_warn(&pf->pdev->dev,
8304                                  "Could not get NPAR bw settings\n");
8305                 else
8306                         dev_info(&pf->pdev->dev,
8307                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8308                                  pf->npar_min_bw, pf->npar_max_bw);
8309         }
8310
8311         /* FW/NVM is not yet fixed in this regard */
8312         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8313             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8314                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8315                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8316                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8317                     pf->hw.num_partitions > 1)
8318                         dev_info(&pf->pdev->dev,
8319                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8320                 else
8321                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8322                 pf->fdir_pf_filter_count =
8323                                  pf->hw.func_caps.fd_filters_guaranteed;
8324                 pf->hw.fdir_shared_filter_count =
8325                                  pf->hw.func_caps.fd_filters_best_effort;
8326         }
8327
8328         if (pf->hw.func_caps.vmdq) {
8329                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8330                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8331                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8332         }
8333
8334 #ifdef I40E_FCOE
8335         i40e_init_pf_fcoe(pf);
8336
8337 #endif /* I40E_FCOE */
8338 #ifdef CONFIG_PCI_IOV
8339         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8340                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8341                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8342                 pf->num_req_vfs = min_t(int,
8343                                         pf->hw.func_caps.num_vfs,
8344                                         I40E_MAX_VF_COUNT);
8345         }
8346 #endif /* CONFIG_PCI_IOV */
8347         if (pf->hw.mac.type == I40E_MAC_X722) {
8348                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8349                              I40E_FLAG_128_QP_RSS_CAPABLE |
8350                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8351                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8352                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8353                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
8354         }
8355         pf->eeprom_version = 0xDEAD;
8356         pf->lan_veb = I40E_NO_VEB;
8357         pf->lan_vsi = I40E_NO_VSI;
8358
8359         /* By default FW has this off for performance reasons */
8360         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8361
8362         /* set up queue assignment tracking */
8363         size = sizeof(struct i40e_lump_tracking)
8364                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8365         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8366         if (!pf->qp_pile) {
8367                 err = -ENOMEM;
8368                 goto sw_init_done;
8369         }
8370         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8371         pf->qp_pile->search_hint = 0;
8372
8373         pf->tx_timeout_recovery_level = 1;
8374
8375         mutex_init(&pf->switch_mutex);
8376
8377         /* If NPAR is enabled nudge the Tx scheduler */
8378         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8379                 i40e_set_npar_bw_setting(pf);
8380
8381 sw_init_done:
8382         return err;
8383 }
8384
8385 /**
8386  * i40e_set_ntuple - set the ntuple feature flag and take action
8387  * @pf: board private structure to initialize
8388  * @features: the feature set that the stack is suggesting
8389  *
8390  * returns a bool to indicate if reset needs to happen
8391  **/
8392 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8393 {
8394         bool need_reset = false;
8395
8396         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8397          * the state changed, we need to reset.
8398          */
8399         if (features & NETIF_F_NTUPLE) {
8400                 /* Enable filters and mark for reset */
8401                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8402                         need_reset = true;
8403                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8404         } else {
8405                 /* turn off filters, mark for reset and clear SW filter list */
8406                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8407                         need_reset = true;
8408                         i40e_fdir_filter_exit(pf);
8409                 }
8410                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8411                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8412                 /* reset fd counters */
8413                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8414                 pf->fdir_pf_active_filters = 0;
8415                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8416                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8417                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8418                 /* if ATR was auto disabled it can be re-enabled. */
8419                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8420                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8421                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8422         }
8423         return need_reset;
8424 }
8425
8426 /**
8427  * i40e_set_features - set the netdev feature flags
8428  * @netdev: ptr to the netdev being adjusted
8429  * @features: the feature set that the stack is suggesting
8430  **/
8431 static int i40e_set_features(struct net_device *netdev,
8432                              netdev_features_t features)
8433 {
8434         struct i40e_netdev_priv *np = netdev_priv(netdev);
8435         struct i40e_vsi *vsi = np->vsi;
8436         struct i40e_pf *pf = vsi->back;
8437         bool need_reset;
8438
8439         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8440                 i40e_vlan_stripping_enable(vsi);
8441         else
8442                 i40e_vlan_stripping_disable(vsi);
8443
8444         need_reset = i40e_set_ntuple(pf, features);
8445
8446         if (need_reset)
8447                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8448
8449         return 0;
8450 }
8451
8452 #ifdef CONFIG_I40E_VXLAN
8453 /**
8454  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8455  * @pf: board private structure
8456  * @port: The UDP port to look up
8457  *
8458  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8459  **/
8460 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8461 {
8462         u8 i;
8463
8464         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8465                 if (pf->vxlan_ports[i] == port)
8466                         return i;
8467         }
8468
8469         return i;
8470 }
8471
8472 /**
8473  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8474  * @netdev: This physical port's netdev
8475  * @sa_family: Socket Family that VXLAN is notifying us about
8476  * @port: New UDP port number that VXLAN started listening to
8477  **/
8478 static void i40e_add_vxlan_port(struct net_device *netdev,
8479                                 sa_family_t sa_family, __be16 port)
8480 {
8481         struct i40e_netdev_priv *np = netdev_priv(netdev);
8482         struct i40e_vsi *vsi = np->vsi;
8483         struct i40e_pf *pf = vsi->back;
8484         u8 next_idx;
8485         u8 idx;
8486
8487         if (sa_family == AF_INET6)
8488                 return;
8489
8490         idx = i40e_get_vxlan_port_idx(pf, port);
8491
8492         /* Check if port already exists */
8493         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8494                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8495                             ntohs(port));
8496                 return;
8497         }
8498
8499         /* Now check if there is space to add the new port */
8500         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8501
8502         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8503                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8504                             ntohs(port));
8505                 return;
8506         }
8507
8508         /* New port: add it and mark its index in the bitmap */
8509         pf->vxlan_ports[next_idx] = port;
8510         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8511         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8512 }
8513
8514 /**
8515  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8516  * @netdev: This physical port's netdev
8517  * @sa_family: Socket Family that VXLAN is notifying us about
8518  * @port: UDP port number that VXLAN stopped listening to
8519  **/
8520 static void i40e_del_vxlan_port(struct net_device *netdev,
8521                                 sa_family_t sa_family, __be16 port)
8522 {
8523         struct i40e_netdev_priv *np = netdev_priv(netdev);
8524         struct i40e_vsi *vsi = np->vsi;
8525         struct i40e_pf *pf = vsi->back;
8526         u8 idx;
8527
8528         if (sa_family == AF_INET6)
8529                 return;
8530
8531         idx = i40e_get_vxlan_port_idx(pf, port);
8532
8533         /* Check if port already exists */
8534         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8535                 /* if port exists, set it to 0 (mark for deletion)
8536                  * and make it pending
8537                  */
8538                 pf->vxlan_ports[idx] = 0;
8539                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8540                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8541         } else {
8542                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8543                             ntohs(port));
8544         }
8545 }
8546
8547 #endif
8548 static int i40e_get_phys_port_id(struct net_device *netdev,
8549                                  struct netdev_phys_item_id *ppid)
8550 {
8551         struct i40e_netdev_priv *np = netdev_priv(netdev);
8552         struct i40e_pf *pf = np->vsi->back;
8553         struct i40e_hw *hw = &pf->hw;
8554
8555         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8556                 return -EOPNOTSUPP;
8557
8558         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8559         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8560
8561         return 0;
8562 }
8563
8564 /**
8565  * i40e_ndo_fdb_add - add an entry to the hardware database
8566  * @ndm: the input from the stack
8567  * @tb: pointer to array of nladdr (unused)
8568  * @dev: the net device pointer
8569  * @addr: the MAC address entry being added
8570  * @flags: instructions from stack about fdb operation
8571  */
8572 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8573                             struct net_device *dev,
8574                             const unsigned char *addr, u16 vid,
8575                             u16 flags)
8576 {
8577         struct i40e_netdev_priv *np = netdev_priv(dev);
8578         struct i40e_pf *pf = np->vsi->back;
8579         int err = 0;
8580
8581         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8582                 return -EOPNOTSUPP;
8583
8584         if (vid) {
8585                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8586                 return -EINVAL;
8587         }
8588
8589         /* Hardware does not support aging addresses so if a
8590          * ndm_state is given only allow permanent addresses
8591          */
8592         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8593                 netdev_info(dev, "FDB only supports static addresses\n");
8594                 return -EINVAL;
8595         }
8596
8597         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8598                 err = dev_uc_add_excl(dev, addr);
8599         else if (is_multicast_ether_addr(addr))
8600                 err = dev_mc_add_excl(dev, addr);
8601         else
8602                 err = -EINVAL;
8603
8604         /* Only return duplicate errors if NLM_F_EXCL is set */
8605         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8606                 err = 0;
8607
8608         return err;
8609 }
8610
8611 /**
8612  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8613  * @dev: the netdev being configured
8614  * @nlh: RTNL message
8615  *
8616  * Inserts a new hardware bridge if not already created and
8617  * enables the bridging mode requested (VEB or VEPA). If the
8618  * hardware bridge has already been inserted and the request
8619  * is to change the mode then that requires a PF reset to
8620  * allow rebuild of the components with required hardware
8621  * bridge mode enabled.
8622  **/
8623 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8624                                    struct nlmsghdr *nlh,
8625                                    u16 flags)
8626 {
8627         struct i40e_netdev_priv *np = netdev_priv(dev);
8628         struct i40e_vsi *vsi = np->vsi;
8629         struct i40e_pf *pf = vsi->back;
8630         struct i40e_veb *veb = NULL;
8631         struct nlattr *attr, *br_spec;
8632         int i, rem;
8633
8634         /* Only for PF VSI for now */
8635         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8636                 return -EOPNOTSUPP;
8637
8638         /* Find the HW bridge for PF VSI */
8639         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8640                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8641                         veb = pf->veb[i];
8642         }
8643
8644         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8645
8646         nla_for_each_nested(attr, br_spec, rem) {
8647                 __u16 mode;
8648
8649                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8650                         continue;
8651
8652                 mode = nla_get_u16(attr);
8653                 if ((mode != BRIDGE_MODE_VEPA) &&
8654                     (mode != BRIDGE_MODE_VEB))
8655                         return -EINVAL;
8656
8657                 /* Insert a new HW bridge */
8658                 if (!veb) {
8659                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8660                                              vsi->tc_config.enabled_tc);
8661                         if (veb) {
8662                                 veb->bridge_mode = mode;
8663                                 i40e_config_bridge_mode(veb);
8664                         } else {
8665                                 /* No Bridge HW offload available */
8666                                 return -ENOENT;
8667                         }
8668                         break;
8669                 } else if (mode != veb->bridge_mode) {
8670                         /* Existing HW bridge but different mode needs reset */
8671                         veb->bridge_mode = mode;
8672                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8673                         if (mode == BRIDGE_MODE_VEB)
8674                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8675                         else
8676                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8677                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8678                         break;
8679                 }
8680         }
8681
8682         return 0;
8683 }
8684
8685 /**
8686  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8687  * @skb: skb buff
8688  * @pid: process id
8689  * @seq: RTNL message seq #
8690  * @dev: the netdev being configured
8691  * @filter_mask: unused
8692  * @nlflags: netlink flags passed in
8693  *
8694  * Return the mode in which the hardware bridge is operating in
8695  * i.e VEB or VEPA.
8696  **/
8697 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8698                                    struct net_device *dev,
8699                                    u32 __always_unused filter_mask,
8700                                    int nlflags)
8701 {
8702         struct i40e_netdev_priv *np = netdev_priv(dev);
8703         struct i40e_vsi *vsi = np->vsi;
8704         struct i40e_pf *pf = vsi->back;
8705         struct i40e_veb *veb = NULL;
8706         int i;
8707
8708         /* Only for PF VSI for now */
8709         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8710                 return -EOPNOTSUPP;
8711
8712         /* Find the HW bridge for the PF VSI */
8713         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8714                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8715                         veb = pf->veb[i];
8716         }
8717
8718         if (!veb)
8719                 return 0;
8720
8721         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8722                                        nlflags, 0, 0, filter_mask, NULL);
8723 }
8724
8725 #define I40E_MAX_TUNNEL_HDR_LEN 80
8726 /**
8727  * i40e_features_check - Validate encapsulated packet conforms to limits
8728  * @skb: skb buff
8729  * @dev: This physical port's netdev
8730  * @features: Offload features that the stack believes apply
8731  **/
8732 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8733                                              struct net_device *dev,
8734                                              netdev_features_t features)
8735 {
8736         if (skb->encapsulation &&
8737             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8738              I40E_MAX_TUNNEL_HDR_LEN))
8739                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8740
8741         return features;
8742 }
8743
8744 static const struct net_device_ops i40e_netdev_ops = {
8745         .ndo_open               = i40e_open,
8746         .ndo_stop               = i40e_close,
8747         .ndo_start_xmit         = i40e_lan_xmit_frame,
8748         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8749         .ndo_set_rx_mode        = i40e_set_rx_mode,
8750         .ndo_validate_addr      = eth_validate_addr,
8751         .ndo_set_mac_address    = i40e_set_mac,
8752         .ndo_change_mtu         = i40e_change_mtu,
8753         .ndo_do_ioctl           = i40e_ioctl,
8754         .ndo_tx_timeout         = i40e_tx_timeout,
8755         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8756         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8757 #ifdef CONFIG_NET_POLL_CONTROLLER
8758         .ndo_poll_controller    = i40e_netpoll,
8759 #endif
8760         .ndo_setup_tc           = i40e_setup_tc,
8761 #ifdef I40E_FCOE
8762         .ndo_fcoe_enable        = i40e_fcoe_enable,
8763         .ndo_fcoe_disable       = i40e_fcoe_disable,
8764 #endif
8765         .ndo_set_features       = i40e_set_features,
8766         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8767         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8768         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8769         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8770         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8771         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8772 #ifdef CONFIG_I40E_VXLAN
8773         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8774         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8775 #endif
8776         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8777         .ndo_fdb_add            = i40e_ndo_fdb_add,
8778         .ndo_features_check     = i40e_features_check,
8779         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8780         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8781 };
8782
8783 /**
8784  * i40e_config_netdev - Setup the netdev flags
8785  * @vsi: the VSI being configured
8786  *
8787  * Returns 0 on success, negative value on failure
8788  **/
8789 static int i40e_config_netdev(struct i40e_vsi *vsi)
8790 {
8791         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8792         struct i40e_pf *pf = vsi->back;
8793         struct i40e_hw *hw = &pf->hw;
8794         struct i40e_netdev_priv *np;
8795         struct net_device *netdev;
8796         u8 mac_addr[ETH_ALEN];
8797         int etherdev_size;
8798
8799         etherdev_size = sizeof(struct i40e_netdev_priv);
8800         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8801         if (!netdev)
8802                 return -ENOMEM;
8803
8804         vsi->netdev = netdev;
8805         np = netdev_priv(netdev);
8806         np->vsi = vsi;
8807
8808         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8809                                   NETIF_F_GSO_UDP_TUNNEL |
8810                                   NETIF_F_GSO_GRE        |
8811                                   NETIF_F_TSO;
8812
8813         netdev->features = NETIF_F_SG                  |
8814                            NETIF_F_IP_CSUM             |
8815                            NETIF_F_SCTP_CSUM           |
8816                            NETIF_F_HIGHDMA             |
8817                            NETIF_F_GSO_UDP_TUNNEL      |
8818                            NETIF_F_GSO_GRE             |
8819                            NETIF_F_HW_VLAN_CTAG_TX     |
8820                            NETIF_F_HW_VLAN_CTAG_RX     |
8821                            NETIF_F_HW_VLAN_CTAG_FILTER |
8822                            NETIF_F_IPV6_CSUM           |
8823                            NETIF_F_TSO                 |
8824                            NETIF_F_TSO_ECN             |
8825                            NETIF_F_TSO6                |
8826                            NETIF_F_RXCSUM              |
8827                            NETIF_F_RXHASH              |
8828                            0;
8829
8830         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8831                 netdev->features |= NETIF_F_NTUPLE;
8832
8833         /* copy netdev features into list of user selectable features */
8834         netdev->hw_features |= netdev->features;
8835
8836         if (vsi->type == I40E_VSI_MAIN) {
8837                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8838                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8839                 /* The following steps are necessary to prevent reception
8840                  * of tagged packets - some older NVM configurations load a
8841                  * default a MAC-VLAN filter that accepts any tagged packet
8842                  * which must be replaced by a normal filter.
8843                  */
8844                 if (!i40e_rm_default_mac_filter(vsi, mac_addr)) {
8845                         spin_lock_bh(&vsi->mac_filter_list_lock);
8846                         i40e_add_filter(vsi, mac_addr,
8847                                         I40E_VLAN_ANY, false, true);
8848                         spin_unlock_bh(&vsi->mac_filter_list_lock);
8849                 }
8850         } else {
8851                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8852                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8853                          pf->vsi[pf->lan_vsi]->netdev->name);
8854                 random_ether_addr(mac_addr);
8855
8856                 spin_lock_bh(&vsi->mac_filter_list_lock);
8857                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8858                 spin_unlock_bh(&vsi->mac_filter_list_lock);
8859         }
8860
8861         spin_lock_bh(&vsi->mac_filter_list_lock);
8862         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8863         spin_unlock_bh(&vsi->mac_filter_list_lock);
8864
8865         ether_addr_copy(netdev->dev_addr, mac_addr);
8866         ether_addr_copy(netdev->perm_addr, mac_addr);
8867         /* vlan gets same features (except vlan offload)
8868          * after any tweaks for specific VSI types
8869          */
8870         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8871                                                      NETIF_F_HW_VLAN_CTAG_RX |
8872                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8873         netdev->priv_flags |= IFF_UNICAST_FLT;
8874         netdev->priv_flags |= IFF_SUPP_NOFCS;
8875         /* Setup netdev TC information */
8876         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8877
8878         netdev->netdev_ops = &i40e_netdev_ops;
8879         netdev->watchdog_timeo = 5 * HZ;
8880         i40e_set_ethtool_ops(netdev);
8881 #ifdef I40E_FCOE
8882         i40e_fcoe_config_netdev(netdev, vsi);
8883 #endif
8884
8885         return 0;
8886 }
8887
8888 /**
8889  * i40e_vsi_delete - Delete a VSI from the switch
8890  * @vsi: the VSI being removed
8891  *
8892  * Returns 0 on success, negative value on failure
8893  **/
8894 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8895 {
8896         /* remove default VSI is not allowed */
8897         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8898                 return;
8899
8900         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8901 }
8902
8903 /**
8904  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8905  * @vsi: the VSI being queried
8906  *
8907  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8908  **/
8909 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8910 {
8911         struct i40e_veb *veb;
8912         struct i40e_pf *pf = vsi->back;
8913
8914         /* Uplink is not a bridge so default to VEB */
8915         if (vsi->veb_idx == I40E_NO_VEB)
8916                 return 1;
8917
8918         veb = pf->veb[vsi->veb_idx];
8919         if (!veb) {
8920                 dev_info(&pf->pdev->dev,
8921                          "There is no veb associated with the bridge\n");
8922                 return -ENOENT;
8923         }
8924
8925         /* Uplink is a bridge in VEPA mode */
8926         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
8927                 return 0;
8928         } else {
8929                 /* Uplink is a bridge in VEB mode */
8930                 return 1;
8931         }
8932
8933         /* VEPA is now default bridge, so return 0 */
8934         return 0;
8935 }
8936
8937 /**
8938  * i40e_add_vsi - Add a VSI to the switch
8939  * @vsi: the VSI being configured
8940  *
8941  * This initializes a VSI context depending on the VSI type to be added and
8942  * passes it down to the add_vsi aq command.
8943  **/
8944 static int i40e_add_vsi(struct i40e_vsi *vsi)
8945 {
8946         int ret = -ENODEV;
8947         u8 laa_macaddr[ETH_ALEN];
8948         bool found_laa_mac_filter = false;
8949         struct i40e_pf *pf = vsi->back;
8950         struct i40e_hw *hw = &pf->hw;
8951         struct i40e_vsi_context ctxt;
8952         struct i40e_mac_filter *f, *ftmp;
8953
8954         u8 enabled_tc = 0x1; /* TC0 enabled */
8955         int f_count = 0;
8956
8957         memset(&ctxt, 0, sizeof(ctxt));
8958         switch (vsi->type) {
8959         case I40E_VSI_MAIN:
8960                 /* The PF's main VSI is already setup as part of the
8961                  * device initialization, so we'll not bother with
8962                  * the add_vsi call, but we will retrieve the current
8963                  * VSI context.
8964                  */
8965                 ctxt.seid = pf->main_vsi_seid;
8966                 ctxt.pf_num = pf->hw.pf_id;
8967                 ctxt.vf_num = 0;
8968                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8969                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8970                 if (ret) {
8971                         dev_info(&pf->pdev->dev,
8972                                  "couldn't get PF vsi config, err %s aq_err %s\n",
8973                                  i40e_stat_str(&pf->hw, ret),
8974                                  i40e_aq_str(&pf->hw,
8975                                              pf->hw.aq.asq_last_status));
8976                         return -ENOENT;
8977                 }
8978                 vsi->info = ctxt.info;
8979                 vsi->info.valid_sections = 0;
8980
8981                 vsi->seid = ctxt.seid;
8982                 vsi->id = ctxt.vsi_number;
8983
8984                 enabled_tc = i40e_pf_get_tc_map(pf);
8985
8986                 /* MFP mode setup queue map and update VSI */
8987                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8988                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8989                         memset(&ctxt, 0, sizeof(ctxt));
8990                         ctxt.seid = pf->main_vsi_seid;
8991                         ctxt.pf_num = pf->hw.pf_id;
8992                         ctxt.vf_num = 0;
8993                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8994                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8995                         if (ret) {
8996                                 dev_info(&pf->pdev->dev,
8997                                          "update vsi failed, err %s aq_err %s\n",
8998                                          i40e_stat_str(&pf->hw, ret),
8999                                          i40e_aq_str(&pf->hw,
9000                                                     pf->hw.aq.asq_last_status));
9001                                 ret = -ENOENT;
9002                                 goto err;
9003                         }
9004                         /* update the local VSI info queue map */
9005                         i40e_vsi_update_queue_map(vsi, &ctxt);
9006                         vsi->info.valid_sections = 0;
9007                 } else {
9008                         /* Default/Main VSI is only enabled for TC0
9009                          * reconfigure it to enable all TCs that are
9010                          * available on the port in SFP mode.
9011                          * For MFP case the iSCSI PF would use this
9012                          * flow to enable LAN+iSCSI TC.
9013                          */
9014                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9015                         if (ret) {
9016                                 dev_info(&pf->pdev->dev,
9017                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9018                                          enabled_tc,
9019                                          i40e_stat_str(&pf->hw, ret),
9020                                          i40e_aq_str(&pf->hw,
9021                                                     pf->hw.aq.asq_last_status));
9022                                 ret = -ENOENT;
9023                         }
9024                 }
9025                 break;
9026
9027         case I40E_VSI_FDIR:
9028                 ctxt.pf_num = hw->pf_id;
9029                 ctxt.vf_num = 0;
9030                 ctxt.uplink_seid = vsi->uplink_seid;
9031                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9032                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9033                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9034                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9035                         ctxt.info.valid_sections |=
9036                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9037                         ctxt.info.switch_id =
9038                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9039                 }
9040                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9041                 break;
9042
9043         case I40E_VSI_VMDQ2:
9044                 ctxt.pf_num = hw->pf_id;
9045                 ctxt.vf_num = 0;
9046                 ctxt.uplink_seid = vsi->uplink_seid;
9047                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9048                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9049
9050                 /* This VSI is connected to VEB so the switch_id
9051                  * should be set to zero by default.
9052                  */
9053                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9054                         ctxt.info.valid_sections |=
9055                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9056                         ctxt.info.switch_id =
9057                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9058                 }
9059
9060                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9061                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9062                 break;
9063
9064         case I40E_VSI_SRIOV:
9065                 ctxt.pf_num = hw->pf_id;
9066                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9067                 ctxt.uplink_seid = vsi->uplink_seid;
9068                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9069                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9070
9071                 /* This VSI is connected to VEB so the switch_id
9072                  * should be set to zero by default.
9073                  */
9074                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9075                         ctxt.info.valid_sections |=
9076                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9077                         ctxt.info.switch_id =
9078                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9079                 }
9080
9081                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9082                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9083                 if (pf->vf[vsi->vf_id].spoofchk) {
9084                         ctxt.info.valid_sections |=
9085                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9086                         ctxt.info.sec_flags |=
9087                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9088                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9089                 }
9090                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9091                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9092                 break;
9093
9094 #ifdef I40E_FCOE
9095         case I40E_VSI_FCOE:
9096                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9097                 if (ret) {
9098                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9099                         return ret;
9100                 }
9101                 break;
9102
9103 #endif /* I40E_FCOE */
9104         default:
9105                 return -ENODEV;
9106         }
9107
9108         if (vsi->type != I40E_VSI_MAIN) {
9109                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9110                 if (ret) {
9111                         dev_info(&vsi->back->pdev->dev,
9112                                  "add vsi failed, err %s aq_err %s\n",
9113                                  i40e_stat_str(&pf->hw, ret),
9114                                  i40e_aq_str(&pf->hw,
9115                                              pf->hw.aq.asq_last_status));
9116                         ret = -ENOENT;
9117                         goto err;
9118                 }
9119                 vsi->info = ctxt.info;
9120                 vsi->info.valid_sections = 0;
9121                 vsi->seid = ctxt.seid;
9122                 vsi->id = ctxt.vsi_number;
9123         }
9124
9125         spin_lock_bh(&vsi->mac_filter_list_lock);
9126         /* If macvlan filters already exist, force them to get loaded */
9127         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9128                 f->changed = true;
9129                 f_count++;
9130
9131                 /* Expected to have only one MAC filter entry for LAA in list */
9132                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
9133                         ether_addr_copy(laa_macaddr, f->macaddr);
9134                         found_laa_mac_filter = true;
9135                 }
9136         }
9137         spin_unlock_bh(&vsi->mac_filter_list_lock);
9138
9139         if (found_laa_mac_filter) {
9140                 struct i40e_aqc_remove_macvlan_element_data element;
9141
9142                 memset(&element, 0, sizeof(element));
9143                 ether_addr_copy(element.mac_addr, laa_macaddr);
9144                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
9145                 ret = i40e_aq_remove_macvlan(hw, vsi->seid,
9146                                              &element, 1, NULL);
9147                 if (ret) {
9148                         /* some older FW has a different default */
9149                         element.flags |=
9150                                        I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
9151                         i40e_aq_remove_macvlan(hw, vsi->seid,
9152                                                &element, 1, NULL);
9153                 }
9154
9155                 i40e_aq_mac_address_write(hw,
9156                                           I40E_AQC_WRITE_TYPE_LAA_WOL,
9157                                           laa_macaddr, NULL);
9158         }
9159
9160         if (f_count) {
9161                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9162                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9163         }
9164
9165         /* Update VSI BW information */
9166         ret = i40e_vsi_get_bw_info(vsi);
9167         if (ret) {
9168                 dev_info(&pf->pdev->dev,
9169                          "couldn't get vsi bw info, err %s aq_err %s\n",
9170                          i40e_stat_str(&pf->hw, ret),
9171                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9172                 /* VSI is already added so not tearing that up */
9173                 ret = 0;
9174         }
9175
9176 err:
9177         return ret;
9178 }
9179
9180 /**
9181  * i40e_vsi_release - Delete a VSI and free its resources
9182  * @vsi: the VSI being removed
9183  *
9184  * Returns 0 on success or < 0 on error
9185  **/
9186 int i40e_vsi_release(struct i40e_vsi *vsi)
9187 {
9188         struct i40e_mac_filter *f, *ftmp;
9189         struct i40e_veb *veb = NULL;
9190         struct i40e_pf *pf;
9191         u16 uplink_seid;
9192         int i, n;
9193
9194         pf = vsi->back;
9195
9196         /* release of a VEB-owner or last VSI is not allowed */
9197         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9198                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9199                          vsi->seid, vsi->uplink_seid);
9200                 return -ENODEV;
9201         }
9202         if (vsi == pf->vsi[pf->lan_vsi] &&
9203             !test_bit(__I40E_DOWN, &pf->state)) {
9204                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9205                 return -ENODEV;
9206         }
9207
9208         uplink_seid = vsi->uplink_seid;
9209         if (vsi->type != I40E_VSI_SRIOV) {
9210                 if (vsi->netdev_registered) {
9211                         vsi->netdev_registered = false;
9212                         if (vsi->netdev) {
9213                                 /* results in a call to i40e_close() */
9214                                 unregister_netdev(vsi->netdev);
9215                         }
9216                 } else {
9217                         i40e_vsi_close(vsi);
9218                 }
9219                 i40e_vsi_disable_irq(vsi);
9220         }
9221
9222         spin_lock_bh(&vsi->mac_filter_list_lock);
9223         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9224                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9225                                 f->is_vf, f->is_netdev);
9226         spin_unlock_bh(&vsi->mac_filter_list_lock);
9227
9228         i40e_sync_vsi_filters(vsi);
9229
9230         i40e_vsi_delete(vsi);
9231         i40e_vsi_free_q_vectors(vsi);
9232         if (vsi->netdev) {
9233                 free_netdev(vsi->netdev);
9234                 vsi->netdev = NULL;
9235         }
9236         i40e_vsi_clear_rings(vsi);
9237         i40e_vsi_clear(vsi);
9238
9239         /* If this was the last thing on the VEB, except for the
9240          * controlling VSI, remove the VEB, which puts the controlling
9241          * VSI onto the next level down in the switch.
9242          *
9243          * Well, okay, there's one more exception here: don't remove
9244          * the orphan VEBs yet.  We'll wait for an explicit remove request
9245          * from up the network stack.
9246          */
9247         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9248                 if (pf->vsi[i] &&
9249                     pf->vsi[i]->uplink_seid == uplink_seid &&
9250                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9251                         n++;      /* count the VSIs */
9252                 }
9253         }
9254         for (i = 0; i < I40E_MAX_VEB; i++) {
9255                 if (!pf->veb[i])
9256                         continue;
9257                 if (pf->veb[i]->uplink_seid == uplink_seid)
9258                         n++;     /* count the VEBs */
9259                 if (pf->veb[i]->seid == uplink_seid)
9260                         veb = pf->veb[i];
9261         }
9262         if (n == 0 && veb && veb->uplink_seid != 0)
9263                 i40e_veb_release(veb);
9264
9265         return 0;
9266 }
9267
9268 /**
9269  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9270  * @vsi: ptr to the VSI
9271  *
9272  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9273  * corresponding SW VSI structure and initializes num_queue_pairs for the
9274  * newly allocated VSI.
9275  *
9276  * Returns 0 on success or negative on failure
9277  **/
9278 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9279 {
9280         int ret = -ENOENT;
9281         struct i40e_pf *pf = vsi->back;
9282
9283         if (vsi->q_vectors[0]) {
9284                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9285                          vsi->seid);
9286                 return -EEXIST;
9287         }
9288
9289         if (vsi->base_vector) {
9290                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9291                          vsi->seid, vsi->base_vector);
9292                 return -EEXIST;
9293         }
9294
9295         ret = i40e_vsi_alloc_q_vectors(vsi);
9296         if (ret) {
9297                 dev_info(&pf->pdev->dev,
9298                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9299                          vsi->num_q_vectors, vsi->seid, ret);
9300                 vsi->num_q_vectors = 0;
9301                 goto vector_setup_out;
9302         }
9303
9304         /* In Legacy mode, we do not have to get any other vector since we
9305          * piggyback on the misc/ICR0 for queue interrupts.
9306         */
9307         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9308                 return ret;
9309         if (vsi->num_q_vectors)
9310                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9311                                                  vsi->num_q_vectors, vsi->idx);
9312         if (vsi->base_vector < 0) {
9313                 dev_info(&pf->pdev->dev,
9314                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9315                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9316                 i40e_vsi_free_q_vectors(vsi);
9317                 ret = -ENOENT;
9318                 goto vector_setup_out;
9319         }
9320
9321 vector_setup_out:
9322         return ret;
9323 }
9324
9325 /**
9326  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9327  * @vsi: pointer to the vsi.
9328  *
9329  * This re-allocates a vsi's queue resources.
9330  *
9331  * Returns pointer to the successfully allocated and configured VSI sw struct
9332  * on success, otherwise returns NULL on failure.
9333  **/
9334 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9335 {
9336         struct i40e_pf *pf = vsi->back;
9337         u8 enabled_tc;
9338         int ret;
9339
9340         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9341         i40e_vsi_clear_rings(vsi);
9342
9343         i40e_vsi_free_arrays(vsi, false);
9344         i40e_set_num_rings_in_vsi(vsi);
9345         ret = i40e_vsi_alloc_arrays(vsi, false);
9346         if (ret)
9347                 goto err_vsi;
9348
9349         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9350         if (ret < 0) {
9351                 dev_info(&pf->pdev->dev,
9352                          "failed to get tracking for %d queues for VSI %d err %d\n",
9353                          vsi->alloc_queue_pairs, vsi->seid, ret);
9354                 goto err_vsi;
9355         }
9356         vsi->base_queue = ret;
9357
9358         /* Update the FW view of the VSI. Force a reset of TC and queue
9359          * layout configurations.
9360          */
9361         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9362         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9363         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9364         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9365
9366         /* assign it some queues */
9367         ret = i40e_alloc_rings(vsi);
9368         if (ret)
9369                 goto err_rings;
9370
9371         /* map all of the rings to the q_vectors */
9372         i40e_vsi_map_rings_to_vectors(vsi);
9373         return vsi;
9374
9375 err_rings:
9376         i40e_vsi_free_q_vectors(vsi);
9377         if (vsi->netdev_registered) {
9378                 vsi->netdev_registered = false;
9379                 unregister_netdev(vsi->netdev);
9380                 free_netdev(vsi->netdev);
9381                 vsi->netdev = NULL;
9382         }
9383         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9384 err_vsi:
9385         i40e_vsi_clear(vsi);
9386         return NULL;
9387 }
9388
9389 /**
9390  * i40e_vsi_setup - Set up a VSI by a given type
9391  * @pf: board private structure
9392  * @type: VSI type
9393  * @uplink_seid: the switch element to link to
9394  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9395  *
9396  * This allocates the sw VSI structure and its queue resources, then add a VSI
9397  * to the identified VEB.
9398  *
9399  * Returns pointer to the successfully allocated and configure VSI sw struct on
9400  * success, otherwise returns NULL on failure.
9401  **/
9402 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9403                                 u16 uplink_seid, u32 param1)
9404 {
9405         struct i40e_vsi *vsi = NULL;
9406         struct i40e_veb *veb = NULL;
9407         int ret, i;
9408         int v_idx;
9409
9410         /* The requested uplink_seid must be either
9411          *     - the PF's port seid
9412          *              no VEB is needed because this is the PF
9413          *              or this is a Flow Director special case VSI
9414          *     - seid of an existing VEB
9415          *     - seid of a VSI that owns an existing VEB
9416          *     - seid of a VSI that doesn't own a VEB
9417          *              a new VEB is created and the VSI becomes the owner
9418          *     - seid of the PF VSI, which is what creates the first VEB
9419          *              this is a special case of the previous
9420          *
9421          * Find which uplink_seid we were given and create a new VEB if needed
9422          */
9423         for (i = 0; i < I40E_MAX_VEB; i++) {
9424                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9425                         veb = pf->veb[i];
9426                         break;
9427                 }
9428         }
9429
9430         if (!veb && uplink_seid != pf->mac_seid) {
9431
9432                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9433                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9434                                 vsi = pf->vsi[i];
9435                                 break;
9436                         }
9437                 }
9438                 if (!vsi) {
9439                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9440                                  uplink_seid);
9441                         return NULL;
9442                 }
9443
9444                 if (vsi->uplink_seid == pf->mac_seid)
9445                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9446                                              vsi->tc_config.enabled_tc);
9447                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9448                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9449                                              vsi->tc_config.enabled_tc);
9450                 if (veb) {
9451                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9452                                 dev_info(&vsi->back->pdev->dev,
9453                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9454                                 return NULL;
9455                         }
9456                         /* We come up by default in VEPA mode if SRIOV is not
9457                          * already enabled, in which case we can't force VEPA
9458                          * mode.
9459                          */
9460                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9461                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9462                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9463                         }
9464                         i40e_config_bridge_mode(veb);
9465                 }
9466                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9467                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9468                                 veb = pf->veb[i];
9469                 }
9470                 if (!veb) {
9471                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9472                         return NULL;
9473                 }
9474
9475                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9476                 uplink_seid = veb->seid;
9477         }
9478
9479         /* get vsi sw struct */
9480         v_idx = i40e_vsi_mem_alloc(pf, type);
9481         if (v_idx < 0)
9482                 goto err_alloc;
9483         vsi = pf->vsi[v_idx];
9484         if (!vsi)
9485                 goto err_alloc;
9486         vsi->type = type;
9487         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9488
9489         if (type == I40E_VSI_MAIN)
9490                 pf->lan_vsi = v_idx;
9491         else if (type == I40E_VSI_SRIOV)
9492                 vsi->vf_id = param1;
9493         /* assign it some queues */
9494         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9495                                 vsi->idx);
9496         if (ret < 0) {
9497                 dev_info(&pf->pdev->dev,
9498                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9499                          vsi->alloc_queue_pairs, vsi->seid, ret);
9500                 goto err_vsi;
9501         }
9502         vsi->base_queue = ret;
9503
9504         /* get a VSI from the hardware */
9505         vsi->uplink_seid = uplink_seid;
9506         ret = i40e_add_vsi(vsi);
9507         if (ret)
9508                 goto err_vsi;
9509
9510         switch (vsi->type) {
9511         /* setup the netdev if needed */
9512         case I40E_VSI_MAIN:
9513         case I40E_VSI_VMDQ2:
9514         case I40E_VSI_FCOE:
9515                 ret = i40e_config_netdev(vsi);
9516                 if (ret)
9517                         goto err_netdev;
9518                 ret = register_netdev(vsi->netdev);
9519                 if (ret)
9520                         goto err_netdev;
9521                 vsi->netdev_registered = true;
9522                 netif_carrier_off(vsi->netdev);
9523 #ifdef CONFIG_I40E_DCB
9524                 /* Setup DCB netlink interface */
9525                 i40e_dcbnl_setup(vsi);
9526 #endif /* CONFIG_I40E_DCB */
9527                 /* fall through */
9528
9529         case I40E_VSI_FDIR:
9530                 /* set up vectors and rings if needed */
9531                 ret = i40e_vsi_setup_vectors(vsi);
9532                 if (ret)
9533                         goto err_msix;
9534
9535                 ret = i40e_alloc_rings(vsi);
9536                 if (ret)
9537                         goto err_rings;
9538
9539                 /* map all of the rings to the q_vectors */
9540                 i40e_vsi_map_rings_to_vectors(vsi);
9541
9542                 i40e_vsi_reset_stats(vsi);
9543                 break;
9544
9545         default:
9546                 /* no netdev or rings for the other VSI types */
9547                 break;
9548         }
9549
9550         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9551             (vsi->type == I40E_VSI_VMDQ2)) {
9552                 ret = i40e_vsi_config_rss(vsi);
9553         }
9554         return vsi;
9555
9556 err_rings:
9557         i40e_vsi_free_q_vectors(vsi);
9558 err_msix:
9559         if (vsi->netdev_registered) {
9560                 vsi->netdev_registered = false;
9561                 unregister_netdev(vsi->netdev);
9562                 free_netdev(vsi->netdev);
9563                 vsi->netdev = NULL;
9564         }
9565 err_netdev:
9566         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9567 err_vsi:
9568         i40e_vsi_clear(vsi);
9569 err_alloc:
9570         return NULL;
9571 }
9572
9573 /**
9574  * i40e_veb_get_bw_info - Query VEB BW information
9575  * @veb: the veb to query
9576  *
9577  * Query the Tx scheduler BW configuration data for given VEB
9578  **/
9579 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9580 {
9581         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9582         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9583         struct i40e_pf *pf = veb->pf;
9584         struct i40e_hw *hw = &pf->hw;
9585         u32 tc_bw_max;
9586         int ret = 0;
9587         int i;
9588
9589         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9590                                                   &bw_data, NULL);
9591         if (ret) {
9592                 dev_info(&pf->pdev->dev,
9593                          "query veb bw config failed, err %s aq_err %s\n",
9594                          i40e_stat_str(&pf->hw, ret),
9595                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9596                 goto out;
9597         }
9598
9599         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9600                                                    &ets_data, NULL);
9601         if (ret) {
9602                 dev_info(&pf->pdev->dev,
9603                          "query veb bw ets config failed, err %s aq_err %s\n",
9604                          i40e_stat_str(&pf->hw, ret),
9605                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9606                 goto out;
9607         }
9608
9609         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9610         veb->bw_max_quanta = ets_data.tc_bw_max;
9611         veb->is_abs_credits = bw_data.absolute_credits_enable;
9612         veb->enabled_tc = ets_data.tc_valid_bits;
9613         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9614                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9615         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9616                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9617                 veb->bw_tc_limit_credits[i] =
9618                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9619                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9620         }
9621
9622 out:
9623         return ret;
9624 }
9625
9626 /**
9627  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9628  * @pf: board private structure
9629  *
9630  * On error: returns error code (negative)
9631  * On success: returns vsi index in PF (positive)
9632  **/
9633 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9634 {
9635         int ret = -ENOENT;
9636         struct i40e_veb *veb;
9637         int i;
9638
9639         /* Need to protect the allocation of switch elements at the PF level */
9640         mutex_lock(&pf->switch_mutex);
9641
9642         /* VEB list may be fragmented if VEB creation/destruction has
9643          * been happening.  We can afford to do a quick scan to look
9644          * for any free slots in the list.
9645          *
9646          * find next empty veb slot, looping back around if necessary
9647          */
9648         i = 0;
9649         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9650                 i++;
9651         if (i >= I40E_MAX_VEB) {
9652                 ret = -ENOMEM;
9653                 goto err_alloc_veb;  /* out of VEB slots! */
9654         }
9655
9656         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9657         if (!veb) {
9658                 ret = -ENOMEM;
9659                 goto err_alloc_veb;
9660         }
9661         veb->pf = pf;
9662         veb->idx = i;
9663         veb->enabled_tc = 1;
9664
9665         pf->veb[i] = veb;
9666         ret = i;
9667 err_alloc_veb:
9668         mutex_unlock(&pf->switch_mutex);
9669         return ret;
9670 }
9671
9672 /**
9673  * i40e_switch_branch_release - Delete a branch of the switch tree
9674  * @branch: where to start deleting
9675  *
9676  * This uses recursion to find the tips of the branch to be
9677  * removed, deleting until we get back to and can delete this VEB.
9678  **/
9679 static void i40e_switch_branch_release(struct i40e_veb *branch)
9680 {
9681         struct i40e_pf *pf = branch->pf;
9682         u16 branch_seid = branch->seid;
9683         u16 veb_idx = branch->idx;
9684         int i;
9685
9686         /* release any VEBs on this VEB - RECURSION */
9687         for (i = 0; i < I40E_MAX_VEB; i++) {
9688                 if (!pf->veb[i])
9689                         continue;
9690                 if (pf->veb[i]->uplink_seid == branch->seid)
9691                         i40e_switch_branch_release(pf->veb[i]);
9692         }
9693
9694         /* Release the VSIs on this VEB, but not the owner VSI.
9695          *
9696          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9697          *       the VEB itself, so don't use (*branch) after this loop.
9698          */
9699         for (i = 0; i < pf->num_alloc_vsi; i++) {
9700                 if (!pf->vsi[i])
9701                         continue;
9702                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9703                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9704                         i40e_vsi_release(pf->vsi[i]);
9705                 }
9706         }
9707
9708         /* There's one corner case where the VEB might not have been
9709          * removed, so double check it here and remove it if needed.
9710          * This case happens if the veb was created from the debugfs
9711          * commands and no VSIs were added to it.
9712          */
9713         if (pf->veb[veb_idx])
9714                 i40e_veb_release(pf->veb[veb_idx]);
9715 }
9716
9717 /**
9718  * i40e_veb_clear - remove veb struct
9719  * @veb: the veb to remove
9720  **/
9721 static void i40e_veb_clear(struct i40e_veb *veb)
9722 {
9723         if (!veb)
9724                 return;
9725
9726         if (veb->pf) {
9727                 struct i40e_pf *pf = veb->pf;
9728
9729                 mutex_lock(&pf->switch_mutex);
9730                 if (pf->veb[veb->idx] == veb)
9731                         pf->veb[veb->idx] = NULL;
9732                 mutex_unlock(&pf->switch_mutex);
9733         }
9734
9735         kfree(veb);
9736 }
9737
9738 /**
9739  * i40e_veb_release - Delete a VEB and free its resources
9740  * @veb: the VEB being removed
9741  **/
9742 void i40e_veb_release(struct i40e_veb *veb)
9743 {
9744         struct i40e_vsi *vsi = NULL;
9745         struct i40e_pf *pf;
9746         int i, n = 0;
9747
9748         pf = veb->pf;
9749
9750         /* find the remaining VSI and check for extras */
9751         for (i = 0; i < pf->num_alloc_vsi; i++) {
9752                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9753                         n++;
9754                         vsi = pf->vsi[i];
9755                 }
9756         }
9757         if (n != 1) {
9758                 dev_info(&pf->pdev->dev,
9759                          "can't remove VEB %d with %d VSIs left\n",
9760                          veb->seid, n);
9761                 return;
9762         }
9763
9764         /* move the remaining VSI to uplink veb */
9765         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9766         if (veb->uplink_seid) {
9767                 vsi->uplink_seid = veb->uplink_seid;
9768                 if (veb->uplink_seid == pf->mac_seid)
9769                         vsi->veb_idx = I40E_NO_VEB;
9770                 else
9771                         vsi->veb_idx = veb->veb_idx;
9772         } else {
9773                 /* floating VEB */
9774                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9775                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9776         }
9777
9778         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9779         i40e_veb_clear(veb);
9780 }
9781
9782 /**
9783  * i40e_add_veb - create the VEB in the switch
9784  * @veb: the VEB to be instantiated
9785  * @vsi: the controlling VSI
9786  **/
9787 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9788 {
9789         struct i40e_pf *pf = veb->pf;
9790         bool is_default = veb->pf->cur_promisc;
9791         bool is_cloud = false;
9792         int ret;
9793
9794         /* get a VEB from the hardware */
9795         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9796                               veb->enabled_tc, is_default,
9797                               is_cloud, &veb->seid, NULL);
9798         if (ret) {
9799                 dev_info(&pf->pdev->dev,
9800                          "couldn't add VEB, err %s aq_err %s\n",
9801                          i40e_stat_str(&pf->hw, ret),
9802                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9803                 return -EPERM;
9804         }
9805
9806         /* get statistics counter */
9807         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9808                                          &veb->stats_idx, NULL, NULL, NULL);
9809         if (ret) {
9810                 dev_info(&pf->pdev->dev,
9811                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9812                          i40e_stat_str(&pf->hw, ret),
9813                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9814                 return -EPERM;
9815         }
9816         ret = i40e_veb_get_bw_info(veb);
9817         if (ret) {
9818                 dev_info(&pf->pdev->dev,
9819                          "couldn't get VEB bw info, err %s aq_err %s\n",
9820                          i40e_stat_str(&pf->hw, ret),
9821                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9822                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9823                 return -ENOENT;
9824         }
9825
9826         vsi->uplink_seid = veb->seid;
9827         vsi->veb_idx = veb->idx;
9828         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9829
9830         return 0;
9831 }
9832
9833 /**
9834  * i40e_veb_setup - Set up a VEB
9835  * @pf: board private structure
9836  * @flags: VEB setup flags
9837  * @uplink_seid: the switch element to link to
9838  * @vsi_seid: the initial VSI seid
9839  * @enabled_tc: Enabled TC bit-map
9840  *
9841  * This allocates the sw VEB structure and links it into the switch
9842  * It is possible and legal for this to be a duplicate of an already
9843  * existing VEB.  It is also possible for both uplink and vsi seids
9844  * to be zero, in order to create a floating VEB.
9845  *
9846  * Returns pointer to the successfully allocated VEB sw struct on
9847  * success, otherwise returns NULL on failure.
9848  **/
9849 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9850                                 u16 uplink_seid, u16 vsi_seid,
9851                                 u8 enabled_tc)
9852 {
9853         struct i40e_veb *veb, *uplink_veb = NULL;
9854         int vsi_idx, veb_idx;
9855         int ret;
9856
9857         /* if one seid is 0, the other must be 0 to create a floating relay */
9858         if ((uplink_seid == 0 || vsi_seid == 0) &&
9859             (uplink_seid + vsi_seid != 0)) {
9860                 dev_info(&pf->pdev->dev,
9861                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9862                          uplink_seid, vsi_seid);
9863                 return NULL;
9864         }
9865
9866         /* make sure there is such a vsi and uplink */
9867         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9868                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9869                         break;
9870         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9871                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9872                          vsi_seid);
9873                 return NULL;
9874         }
9875
9876         if (uplink_seid && uplink_seid != pf->mac_seid) {
9877                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9878                         if (pf->veb[veb_idx] &&
9879                             pf->veb[veb_idx]->seid == uplink_seid) {
9880                                 uplink_veb = pf->veb[veb_idx];
9881                                 break;
9882                         }
9883                 }
9884                 if (!uplink_veb) {
9885                         dev_info(&pf->pdev->dev,
9886                                  "uplink seid %d not found\n", uplink_seid);
9887                         return NULL;
9888                 }
9889         }
9890
9891         /* get veb sw struct */
9892         veb_idx = i40e_veb_mem_alloc(pf);
9893         if (veb_idx < 0)
9894                 goto err_alloc;
9895         veb = pf->veb[veb_idx];
9896         veb->flags = flags;
9897         veb->uplink_seid = uplink_seid;
9898         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9899         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9900
9901         /* create the VEB in the switch */
9902         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9903         if (ret)
9904                 goto err_veb;
9905         if (vsi_idx == pf->lan_vsi)
9906                 pf->lan_veb = veb->idx;
9907
9908         return veb;
9909
9910 err_veb:
9911         i40e_veb_clear(veb);
9912 err_alloc:
9913         return NULL;
9914 }
9915
9916 /**
9917  * i40e_setup_pf_switch_element - set PF vars based on switch type
9918  * @pf: board private structure
9919  * @ele: element we are building info from
9920  * @num_reported: total number of elements
9921  * @printconfig: should we print the contents
9922  *
9923  * helper function to assist in extracting a few useful SEID values.
9924  **/
9925 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9926                                 struct i40e_aqc_switch_config_element_resp *ele,
9927                                 u16 num_reported, bool printconfig)
9928 {
9929         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9930         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9931         u8 element_type = ele->element_type;
9932         u16 seid = le16_to_cpu(ele->seid);
9933
9934         if (printconfig)
9935                 dev_info(&pf->pdev->dev,
9936                          "type=%d seid=%d uplink=%d downlink=%d\n",
9937                          element_type, seid, uplink_seid, downlink_seid);
9938
9939         switch (element_type) {
9940         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9941                 pf->mac_seid = seid;
9942                 break;
9943         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9944                 /* Main VEB? */
9945                 if (uplink_seid != pf->mac_seid)
9946                         break;
9947                 if (pf->lan_veb == I40E_NO_VEB) {
9948                         int v;
9949
9950                         /* find existing or else empty VEB */
9951                         for (v = 0; v < I40E_MAX_VEB; v++) {
9952                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9953                                         pf->lan_veb = v;
9954                                         break;
9955                                 }
9956                         }
9957                         if (pf->lan_veb == I40E_NO_VEB) {
9958                                 v = i40e_veb_mem_alloc(pf);
9959                                 if (v < 0)
9960                                         break;
9961                                 pf->lan_veb = v;
9962                         }
9963                 }
9964
9965                 pf->veb[pf->lan_veb]->seid = seid;
9966                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9967                 pf->veb[pf->lan_veb]->pf = pf;
9968                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9969                 break;
9970         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9971                 if (num_reported != 1)
9972                         break;
9973                 /* This is immediately after a reset so we can assume this is
9974                  * the PF's VSI
9975                  */
9976                 pf->mac_seid = uplink_seid;
9977                 pf->pf_seid = downlink_seid;
9978                 pf->main_vsi_seid = seid;
9979                 if (printconfig)
9980                         dev_info(&pf->pdev->dev,
9981                                  "pf_seid=%d main_vsi_seid=%d\n",
9982                                  pf->pf_seid, pf->main_vsi_seid);
9983                 break;
9984         case I40E_SWITCH_ELEMENT_TYPE_PF:
9985         case I40E_SWITCH_ELEMENT_TYPE_VF:
9986         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9987         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9988         case I40E_SWITCH_ELEMENT_TYPE_PE:
9989         case I40E_SWITCH_ELEMENT_TYPE_PA:
9990                 /* ignore these for now */
9991                 break;
9992         default:
9993                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9994                          element_type, seid);
9995                 break;
9996         }
9997 }
9998
9999 /**
10000  * i40e_fetch_switch_configuration - Get switch config from firmware
10001  * @pf: board private structure
10002  * @printconfig: should we print the contents
10003  *
10004  * Get the current switch configuration from the device and
10005  * extract a few useful SEID values.
10006  **/
10007 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10008 {
10009         struct i40e_aqc_get_switch_config_resp *sw_config;
10010         u16 next_seid = 0;
10011         int ret = 0;
10012         u8 *aq_buf;
10013         int i;
10014
10015         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10016         if (!aq_buf)
10017                 return -ENOMEM;
10018
10019         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10020         do {
10021                 u16 num_reported, num_total;
10022
10023                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10024                                                 I40E_AQ_LARGE_BUF,
10025                                                 &next_seid, NULL);
10026                 if (ret) {
10027                         dev_info(&pf->pdev->dev,
10028                                  "get switch config failed err %s aq_err %s\n",
10029                                  i40e_stat_str(&pf->hw, ret),
10030                                  i40e_aq_str(&pf->hw,
10031                                              pf->hw.aq.asq_last_status));
10032                         kfree(aq_buf);
10033                         return -ENOENT;
10034                 }
10035
10036                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10037                 num_total = le16_to_cpu(sw_config->header.num_total);
10038
10039                 if (printconfig)
10040                         dev_info(&pf->pdev->dev,
10041                                  "header: %d reported %d total\n",
10042                                  num_reported, num_total);
10043
10044                 for (i = 0; i < num_reported; i++) {
10045                         struct i40e_aqc_switch_config_element_resp *ele =
10046                                 &sw_config->element[i];
10047
10048                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10049                                                      printconfig);
10050                 }
10051         } while (next_seid != 0);
10052
10053         kfree(aq_buf);
10054         return ret;
10055 }
10056
10057 /**
10058  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10059  * @pf: board private structure
10060  * @reinit: if the Main VSI needs to re-initialized.
10061  *
10062  * Returns 0 on success, negative value on failure
10063  **/
10064 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10065 {
10066         int ret;
10067
10068         /* find out what's out there already */
10069         ret = i40e_fetch_switch_configuration(pf, false);
10070         if (ret) {
10071                 dev_info(&pf->pdev->dev,
10072                          "couldn't fetch switch config, err %s aq_err %s\n",
10073                          i40e_stat_str(&pf->hw, ret),
10074                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10075                 return ret;
10076         }
10077         i40e_pf_reset_stats(pf);
10078
10079         /* first time setup */
10080         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10081                 struct i40e_vsi *vsi = NULL;
10082                 u16 uplink_seid;
10083
10084                 /* Set up the PF VSI associated with the PF's main VSI
10085                  * that is already in the HW switch
10086                  */
10087                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10088                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10089                 else
10090                         uplink_seid = pf->mac_seid;
10091                 if (pf->lan_vsi == I40E_NO_VSI)
10092                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10093                 else if (reinit)
10094                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10095                 if (!vsi) {
10096                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10097                         i40e_fdir_teardown(pf);
10098                         return -EAGAIN;
10099                 }
10100         } else {
10101                 /* force a reset of TC and queue layout configurations */
10102                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10103
10104                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10105                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10106                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10107         }
10108         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10109
10110         i40e_fdir_sb_setup(pf);
10111
10112         /* Setup static PF queue filter control settings */
10113         ret = i40e_setup_pf_filter_control(pf);
10114         if (ret) {
10115                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10116                          ret);
10117                 /* Failure here should not stop continuing other steps */
10118         }
10119
10120         /* enable RSS in the HW, even for only one queue, as the stack can use
10121          * the hash
10122          */
10123         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10124                 i40e_pf_config_rss(pf);
10125
10126         /* fill in link information and enable LSE reporting */
10127         i40e_update_link_info(&pf->hw);
10128         i40e_link_event(pf);
10129
10130         /* Initialize user-specific link properties */
10131         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10132                                   I40E_AQ_AN_COMPLETED) ? true : false);
10133
10134         i40e_ptp_init(pf);
10135
10136         return ret;
10137 }
10138
10139 /**
10140  * i40e_determine_queue_usage - Work out queue distribution
10141  * @pf: board private structure
10142  **/
10143 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10144 {
10145         int queues_left;
10146
10147         pf->num_lan_qps = 0;
10148 #ifdef I40E_FCOE
10149         pf->num_fcoe_qps = 0;
10150 #endif
10151
10152         /* Find the max queues to be put into basic use.  We'll always be
10153          * using TC0, whether or not DCB is running, and TC0 will get the
10154          * big RSS set.
10155          */
10156         queues_left = pf->hw.func_caps.num_tx_qp;
10157
10158         if ((queues_left == 1) ||
10159             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10160                 /* one qp for PF, no queues for anything else */
10161                 queues_left = 0;
10162                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10163
10164                 /* make sure all the fancies are disabled */
10165                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10166 #ifdef I40E_FCOE
10167                                I40E_FLAG_FCOE_ENABLED   |
10168 #endif
10169                                I40E_FLAG_FD_SB_ENABLED  |
10170                                I40E_FLAG_FD_ATR_ENABLED |
10171                                I40E_FLAG_DCB_CAPABLE    |
10172                                I40E_FLAG_SRIOV_ENABLED  |
10173                                I40E_FLAG_VMDQ_ENABLED);
10174         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10175                                   I40E_FLAG_FD_SB_ENABLED |
10176                                   I40E_FLAG_FD_ATR_ENABLED |
10177                                   I40E_FLAG_DCB_CAPABLE))) {
10178                 /* one qp for PF */
10179                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10180                 queues_left -= pf->num_lan_qps;
10181
10182                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10183 #ifdef I40E_FCOE
10184                                I40E_FLAG_FCOE_ENABLED   |
10185 #endif
10186                                I40E_FLAG_FD_SB_ENABLED  |
10187                                I40E_FLAG_FD_ATR_ENABLED |
10188                                I40E_FLAG_DCB_ENABLED    |
10189                                I40E_FLAG_VMDQ_ENABLED);
10190         } else {
10191                 /* Not enough queues for all TCs */
10192                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10193                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10194                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10195                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10196                 }
10197                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10198                                         num_online_cpus());
10199                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10200                                         pf->hw.func_caps.num_tx_qp);
10201
10202                 queues_left -= pf->num_lan_qps;
10203         }
10204
10205 #ifdef I40E_FCOE
10206         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10207                 if (I40E_DEFAULT_FCOE <= queues_left) {
10208                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10209                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10210                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10211                 } else {
10212                         pf->num_fcoe_qps = 0;
10213                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10214                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10215                 }
10216
10217                 queues_left -= pf->num_fcoe_qps;
10218         }
10219
10220 #endif
10221         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10222                 if (queues_left > 1) {
10223                         queues_left -= 1; /* save 1 queue for FD */
10224                 } else {
10225                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10226                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10227                 }
10228         }
10229
10230         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10231             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10232                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10233                                         (queues_left / pf->num_vf_qps));
10234                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10235         }
10236
10237         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10238             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10239                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10240                                           (queues_left / pf->num_vmdq_qps));
10241                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10242         }
10243
10244         pf->queues_left = queues_left;
10245         dev_dbg(&pf->pdev->dev,
10246                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10247                 pf->hw.func_caps.num_tx_qp,
10248                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10249                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10250                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10251                 queues_left);
10252 #ifdef I40E_FCOE
10253         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10254 #endif
10255 }
10256
10257 /**
10258  * i40e_setup_pf_filter_control - Setup PF static filter control
10259  * @pf: PF to be setup
10260  *
10261  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10262  * settings. If PE/FCoE are enabled then it will also set the per PF
10263  * based filter sizes required for them. It also enables Flow director,
10264  * ethertype and macvlan type filter settings for the pf.
10265  *
10266  * Returns 0 on success, negative on failure
10267  **/
10268 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10269 {
10270         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10271
10272         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10273
10274         /* Flow Director is enabled */
10275         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10276                 settings->enable_fdir = true;
10277
10278         /* Ethtype and MACVLAN filters enabled for PF */
10279         settings->enable_ethtype = true;
10280         settings->enable_macvlan = true;
10281
10282         if (i40e_set_filter_control(&pf->hw, settings))
10283                 return -ENOENT;
10284
10285         return 0;
10286 }
10287
10288 #define INFO_STRING_LEN 255
10289 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10290 static void i40e_print_features(struct i40e_pf *pf)
10291 {
10292         struct i40e_hw *hw = &pf->hw;
10293         char *buf, *string;
10294         int i = 0;
10295
10296         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
10297         if (!string) {
10298                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
10299                 return;
10300         }
10301
10302         buf = string;
10303
10304         i += snprintf(&buf[i], REMAIN(i), "Features: PF-id[%d] ", hw->pf_id);
10305 #ifdef CONFIG_PCI_IOV
10306         i += snprintf(&buf[i], REMAIN(i), "VFs: %d ", pf->num_req_vfs);
10307 #endif
10308         i += snprintf(&buf[i], REMAIN(i), "VSIs: %d QP: %d RX: %s ",
10309                       pf->hw.func_caps.num_vsis,
10310                       pf->vsi[pf->lan_vsi]->num_queue_pairs,
10311                       pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
10312
10313         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10314                 i += snprintf(&buf[i], REMAIN(i), "RSS ");
10315         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10316                 i += snprintf(&buf[i], REMAIN(i), "FD_ATR ");
10317         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10318                 i += snprintf(&buf[i], REMAIN(i), "FD_SB ");
10319                 i += snprintf(&buf[i], REMAIN(i), "NTUPLE ");
10320         }
10321         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10322                 i += snprintf(&buf[i], REMAIN(i), "DCB ");
10323 #if IS_ENABLED(CONFIG_VXLAN)
10324         i += snprintf(&buf[i], REMAIN(i), "VxLAN ");
10325 #endif
10326         if (pf->flags & I40E_FLAG_PTP)
10327                 i += snprintf(&buf[i], REMAIN(i), "PTP ");
10328 #ifdef I40E_FCOE
10329         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10330                 i += snprintf(&buf[i], REMAIN(i), "FCOE ");
10331 #endif
10332         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10333                 i += snprintf(&buf[i], REMAIN(i), "VEPA ");
10334         else
10335                 buf += sprintf(buf, "VEPA ");
10336
10337         dev_info(&pf->pdev->dev, "%s\n", string);
10338         kfree(string);
10339         WARN_ON(i > INFO_STRING_LEN);
10340 }
10341
10342 /**
10343  * i40e_probe - Device initialization routine
10344  * @pdev: PCI device information struct
10345  * @ent: entry in i40e_pci_tbl
10346  *
10347  * i40e_probe initializes a PF identified by a pci_dev structure.
10348  * The OS initialization, configuring of the PF private structure,
10349  * and a hardware reset occur.
10350  *
10351  * Returns 0 on success, negative on failure
10352  **/
10353 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10354 {
10355         struct i40e_aq_get_phy_abilities_resp abilities;
10356         struct i40e_pf *pf;
10357         struct i40e_hw *hw;
10358         static u16 pfs_found;
10359         u16 wol_nvm_bits;
10360         u16 link_status;
10361         int err;
10362         u32 len;
10363         u32 val;
10364         u32 i;
10365         u8 set_fc_aq_fail;
10366
10367         err = pci_enable_device_mem(pdev);
10368         if (err)
10369                 return err;
10370
10371         /* set up for high or low dma */
10372         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10373         if (err) {
10374                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10375                 if (err) {
10376                         dev_err(&pdev->dev,
10377                                 "DMA configuration failed: 0x%x\n", err);
10378                         goto err_dma;
10379                 }
10380         }
10381
10382         /* set up pci connections */
10383         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
10384                                            IORESOURCE_MEM), i40e_driver_name);
10385         if (err) {
10386                 dev_info(&pdev->dev,
10387                          "pci_request_selected_regions failed %d\n", err);
10388                 goto err_pci_reg;
10389         }
10390
10391         pci_enable_pcie_error_reporting(pdev);
10392         pci_set_master(pdev);
10393
10394         /* Now that we have a PCI connection, we need to do the
10395          * low level device setup.  This is primarily setting up
10396          * the Admin Queue structures and then querying for the
10397          * device's current profile information.
10398          */
10399         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10400         if (!pf) {
10401                 err = -ENOMEM;
10402                 goto err_pf_alloc;
10403         }
10404         pf->next_vsi = 0;
10405         pf->pdev = pdev;
10406         set_bit(__I40E_DOWN, &pf->state);
10407
10408         hw = &pf->hw;
10409         hw->back = pf;
10410
10411         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10412                                 I40E_MAX_CSR_SPACE);
10413
10414         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10415         if (!hw->hw_addr) {
10416                 err = -EIO;
10417                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10418                          (unsigned int)pci_resource_start(pdev, 0),
10419                          pf->ioremap_len, err);
10420                 goto err_ioremap;
10421         }
10422         hw->vendor_id = pdev->vendor;
10423         hw->device_id = pdev->device;
10424         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10425         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10426         hw->subsystem_device_id = pdev->subsystem_device;
10427         hw->bus.device = PCI_SLOT(pdev->devfn);
10428         hw->bus.func = PCI_FUNC(pdev->devfn);
10429         pf->instance = pfs_found;
10430
10431         if (debug != -1) {
10432                 pf->msg_enable = pf->hw.debug_mask;
10433                 pf->msg_enable = debug;
10434         }
10435
10436         /* do a special CORER for clearing PXE mode once at init */
10437         if (hw->revision_id == 0 &&
10438             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10439                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10440                 i40e_flush(hw);
10441                 msleep(200);
10442                 pf->corer_count++;
10443
10444                 i40e_clear_pxe_mode(hw);
10445         }
10446
10447         /* Reset here to make sure all is clean and to define PF 'n' */
10448         i40e_clear_hw(hw);
10449         err = i40e_pf_reset(hw);
10450         if (err) {
10451                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10452                 goto err_pf_reset;
10453         }
10454         pf->pfr_count++;
10455
10456         hw->aq.num_arq_entries = I40E_AQ_LEN;
10457         hw->aq.num_asq_entries = I40E_AQ_LEN;
10458         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10459         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10460         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10461
10462         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10463                  "%s-%s:misc",
10464                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10465
10466         err = i40e_init_shared_code(hw);
10467         if (err) {
10468                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10469                          err);
10470                 goto err_pf_reset;
10471         }
10472
10473         /* set up a default setting for link flow control */
10474         pf->hw.fc.requested_mode = I40E_FC_NONE;
10475
10476         err = i40e_init_adminq(hw);
10477         if (err) {
10478                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10479                         dev_info(&pdev->dev,
10480                                  "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");
10481                 else
10482                         dev_info(&pdev->dev,
10483                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10484
10485                 goto err_pf_reset;
10486         }
10487
10488         /* provide nvm, fw, api versions */
10489         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10490                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10491                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10492                  i40e_nvm_version_str(hw));
10493
10494         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10495             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10496                 dev_info(&pdev->dev,
10497                          "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");
10498         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10499                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10500                 dev_info(&pdev->dev,
10501                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10502
10503         i40e_verify_eeprom(pf);
10504
10505         /* Rev 0 hardware was never productized */
10506         if (hw->revision_id < 1)
10507                 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");
10508
10509         i40e_clear_pxe_mode(hw);
10510         err = i40e_get_capabilities(pf);
10511         if (err)
10512                 goto err_adminq_setup;
10513
10514         err = i40e_sw_init(pf);
10515         if (err) {
10516                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10517                 goto err_sw_init;
10518         }
10519
10520         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10521                                 hw->func_caps.num_rx_qp,
10522                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10523         if (err) {
10524                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10525                 goto err_init_lan_hmc;
10526         }
10527
10528         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10529         if (err) {
10530                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10531                 err = -ENOENT;
10532                 goto err_configure_lan_hmc;
10533         }
10534
10535         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10536          * Ignore error return codes because if it was already disabled via
10537          * hardware settings this will fail
10538          */
10539         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10540             (pf->hw.aq.fw_maj_ver < 4)) {
10541                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10542                 i40e_aq_stop_lldp(hw, true, NULL);
10543         }
10544
10545         i40e_get_mac_addr(hw, hw->mac.addr);
10546         if (!is_valid_ether_addr(hw->mac.addr)) {
10547                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10548                 err = -EIO;
10549                 goto err_mac_addr;
10550         }
10551         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10552         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10553         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10554         if (is_valid_ether_addr(hw->mac.port_addr))
10555                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10556 #ifdef I40E_FCOE
10557         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10558         if (err)
10559                 dev_info(&pdev->dev,
10560                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10561         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10562                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10563                          hw->mac.san_addr);
10564                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10565         }
10566         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10567 #endif /* I40E_FCOE */
10568
10569         pci_set_drvdata(pdev, pf);
10570         pci_save_state(pdev);
10571 #ifdef CONFIG_I40E_DCB
10572         err = i40e_init_pf_dcb(pf);
10573         if (err) {
10574                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10575                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10576                 /* Continue without DCB enabled */
10577         }
10578 #endif /* CONFIG_I40E_DCB */
10579
10580         /* set up periodic task facility */
10581         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10582         pf->service_timer_period = HZ;
10583
10584         INIT_WORK(&pf->service_task, i40e_service_task);
10585         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10586         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10587
10588         /* NVM bit on means WoL disabled for the port */
10589         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10590         if ((1 << hw->port) & wol_nvm_bits || hw->partition_id != 1)
10591                 pf->wol_en = false;
10592         else
10593                 pf->wol_en = true;
10594         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10595
10596         /* set up the main switch operations */
10597         i40e_determine_queue_usage(pf);
10598         err = i40e_init_interrupt_scheme(pf);
10599         if (err)
10600                 goto err_switch_setup;
10601
10602         /* The number of VSIs reported by the FW is the minimum guaranteed
10603          * to us; HW supports far more and we share the remaining pool with
10604          * the other PFs. We allocate space for more than the guarantee with
10605          * the understanding that we might not get them all later.
10606          */
10607         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10608                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10609         else
10610                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10611
10612         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10613         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10614         pf->vsi = kzalloc(len, GFP_KERNEL);
10615         if (!pf->vsi) {
10616                 err = -ENOMEM;
10617                 goto err_switch_setup;
10618         }
10619
10620 #ifdef CONFIG_PCI_IOV
10621         /* prep for VF support */
10622         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10623             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10624             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10625                 if (pci_num_vf(pdev))
10626                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10627         }
10628 #endif
10629         err = i40e_setup_pf_switch(pf, false);
10630         if (err) {
10631                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10632                 goto err_vsis;
10633         }
10634
10635         /* Make sure flow control is set according to current settings */
10636         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
10637         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
10638                 dev_dbg(&pf->pdev->dev,
10639                         "Set fc with err %s aq_err %s on get_phy_cap\n",
10640                         i40e_stat_str(hw, err),
10641                         i40e_aq_str(hw, hw->aq.asq_last_status));
10642         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
10643                 dev_dbg(&pf->pdev->dev,
10644                         "Set fc with err %s aq_err %s on set_phy_config\n",
10645                         i40e_stat_str(hw, err),
10646                         i40e_aq_str(hw, hw->aq.asq_last_status));
10647         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
10648                 dev_dbg(&pf->pdev->dev,
10649                         "Set fc with err %s aq_err %s on get_link_info\n",
10650                         i40e_stat_str(hw, err),
10651                         i40e_aq_str(hw, hw->aq.asq_last_status));
10652
10653         /* if FDIR VSI was set up, start it now */
10654         for (i = 0; i < pf->num_alloc_vsi; i++) {
10655                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10656                         i40e_vsi_open(pf->vsi[i]);
10657                         break;
10658                 }
10659         }
10660
10661         /* driver is only interested in link up/down and module qualification
10662          * reports from firmware
10663          */
10664         err = i40e_aq_set_phy_int_mask(&pf->hw,
10665                                        I40E_AQ_EVENT_LINK_UPDOWN |
10666                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10667         if (err)
10668                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10669                          i40e_stat_str(&pf->hw, err),
10670                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10671
10672         /* Reconfigure hardware for allowing smaller MSS in the case
10673          * of TSO, so that we avoid the MDD being fired and causing
10674          * a reset in the case of small MSS+TSO.
10675          */
10676         val = rd32(hw, I40E_REG_MSS);
10677         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
10678                 val &= ~I40E_REG_MSS_MIN_MASK;
10679                 val |= I40E_64BYTE_MSS;
10680                 wr32(hw, I40E_REG_MSS, val);
10681         }
10682
10683         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10684             (pf->hw.aq.fw_maj_ver < 4)) {
10685                 msleep(75);
10686                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10687                 if (err)
10688                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10689                                  i40e_stat_str(&pf->hw, err),
10690                                  i40e_aq_str(&pf->hw,
10691                                              pf->hw.aq.asq_last_status));
10692         }
10693         /* The main driver is (mostly) up and happy. We need to set this state
10694          * before setting up the misc vector or we get a race and the vector
10695          * ends up disabled forever.
10696          */
10697         clear_bit(__I40E_DOWN, &pf->state);
10698
10699         /* In case of MSIX we are going to setup the misc vector right here
10700          * to handle admin queue events etc. In case of legacy and MSI
10701          * the misc functionality and queue processing is combined in
10702          * the same vector and that gets setup at open.
10703          */
10704         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10705                 err = i40e_setup_misc_vector(pf);
10706                 if (err) {
10707                         dev_info(&pdev->dev,
10708                                  "setup of misc vector failed: %d\n", err);
10709                         goto err_vsis;
10710                 }
10711         }
10712
10713 #ifdef CONFIG_PCI_IOV
10714         /* prep for VF support */
10715         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10716             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10717             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10718                 u32 val;
10719
10720                 /* disable link interrupts for VFs */
10721                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10722                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10723                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10724                 i40e_flush(hw);
10725
10726                 if (pci_num_vf(pdev)) {
10727                         dev_info(&pdev->dev,
10728                                  "Active VFs found, allocating resources.\n");
10729                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10730                         if (err)
10731                                 dev_info(&pdev->dev,
10732                                          "Error %d allocating resources for existing VFs\n",
10733                                          err);
10734                 }
10735         }
10736 #endif /* CONFIG_PCI_IOV */
10737
10738         pfs_found++;
10739
10740         i40e_dbg_pf_init(pf);
10741
10742         /* tell the firmware that we're starting */
10743         i40e_send_version(pf);
10744
10745         /* since everything's happy, start the service_task timer */
10746         mod_timer(&pf->service_timer,
10747                   round_jiffies(jiffies + pf->service_timer_period));
10748
10749 #ifdef I40E_FCOE
10750         /* create FCoE interface */
10751         i40e_fcoe_vsi_setup(pf);
10752
10753 #endif
10754 #define PCI_SPEED_SIZE 8
10755 #define PCI_WIDTH_SIZE 8
10756         /* Devices on the IOSF bus do not have this information
10757          * and will report PCI Gen 1 x 1 by default so don't bother
10758          * checking them.
10759          */
10760         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
10761                 char speed[PCI_SPEED_SIZE] = "Unknown";
10762                 char width[PCI_WIDTH_SIZE] = "Unknown";
10763
10764                 /* Get the negotiated link width and speed from PCI config
10765                  * space
10766                  */
10767                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
10768                                           &link_status);
10769
10770                 i40e_set_pci_config_data(hw, link_status);
10771
10772                 switch (hw->bus.speed) {
10773                 case i40e_bus_speed_8000:
10774                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
10775                 case i40e_bus_speed_5000:
10776                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
10777                 case i40e_bus_speed_2500:
10778                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
10779                 default:
10780                         break;
10781                 }
10782                 switch (hw->bus.width) {
10783                 case i40e_bus_width_pcie_x8:
10784                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
10785                 case i40e_bus_width_pcie_x4:
10786                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
10787                 case i40e_bus_width_pcie_x2:
10788                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
10789                 case i40e_bus_width_pcie_x1:
10790                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
10791                 default:
10792                         break;
10793                 }
10794
10795                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
10796                          speed, width);
10797
10798                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10799                     hw->bus.speed < i40e_bus_speed_8000) {
10800                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10801                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10802                 }
10803         }
10804
10805         /* get the requested speeds from the fw */
10806         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10807         if (err)
10808                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
10809                         i40e_stat_str(&pf->hw, err),
10810                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10811         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10812
10813         /* get the supported phy types from the fw */
10814         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
10815         if (err)
10816                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
10817                         i40e_stat_str(&pf->hw, err),
10818                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10819         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
10820
10821         /* Add a filter to drop all Flow control frames from any VSI from being
10822          * transmitted. By doing so we stop a malicious VF from sending out
10823          * PAUSE or PFC frames and potentially controlling traffic for other
10824          * PF/VF VSIs.
10825          * The FW can still send Flow control frames if enabled.
10826          */
10827         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
10828                                                        pf->main_vsi_seid);
10829
10830         /* print a string summarizing features */
10831         i40e_print_features(pf);
10832
10833         return 0;
10834
10835         /* Unwind what we've done if something failed in the setup */
10836 err_vsis:
10837         set_bit(__I40E_DOWN, &pf->state);
10838         i40e_clear_interrupt_scheme(pf);
10839         kfree(pf->vsi);
10840 err_switch_setup:
10841         i40e_reset_interrupt_capability(pf);
10842         del_timer_sync(&pf->service_timer);
10843 err_mac_addr:
10844 err_configure_lan_hmc:
10845         (void)i40e_shutdown_lan_hmc(hw);
10846 err_init_lan_hmc:
10847         kfree(pf->qp_pile);
10848 err_sw_init:
10849 err_adminq_setup:
10850         (void)i40e_shutdown_adminq(hw);
10851 err_pf_reset:
10852         iounmap(hw->hw_addr);
10853 err_ioremap:
10854         kfree(pf);
10855 err_pf_alloc:
10856         pci_disable_pcie_error_reporting(pdev);
10857         pci_release_selected_regions(pdev,
10858                                      pci_select_bars(pdev, IORESOURCE_MEM));
10859 err_pci_reg:
10860 err_dma:
10861         pci_disable_device(pdev);
10862         return err;
10863 }
10864
10865 /**
10866  * i40e_remove - Device removal routine
10867  * @pdev: PCI device information struct
10868  *
10869  * i40e_remove is called by the PCI subsystem to alert the driver
10870  * that is should release a PCI device.  This could be caused by a
10871  * Hot-Plug event, or because the driver is going to be removed from
10872  * memory.
10873  **/
10874 static void i40e_remove(struct pci_dev *pdev)
10875 {
10876         struct i40e_pf *pf = pci_get_drvdata(pdev);
10877         struct i40e_hw *hw = &pf->hw;
10878         i40e_status ret_code;
10879         int i;
10880
10881         i40e_dbg_pf_exit(pf);
10882
10883         i40e_ptp_stop(pf);
10884
10885         /* Disable RSS in hw */
10886         wr32(hw, I40E_PFQF_HENA(0), 0);
10887         wr32(hw, I40E_PFQF_HENA(1), 0);
10888
10889         /* no more scheduling of any task */
10890         set_bit(__I40E_DOWN, &pf->state);
10891         del_timer_sync(&pf->service_timer);
10892         cancel_work_sync(&pf->service_task);
10893         i40e_fdir_teardown(pf);
10894
10895         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10896                 i40e_free_vfs(pf);
10897                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10898         }
10899
10900         i40e_fdir_teardown(pf);
10901
10902         /* If there is a switch structure or any orphans, remove them.
10903          * This will leave only the PF's VSI remaining.
10904          */
10905         for (i = 0; i < I40E_MAX_VEB; i++) {
10906                 if (!pf->veb[i])
10907                         continue;
10908
10909                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10910                     pf->veb[i]->uplink_seid == 0)
10911                         i40e_switch_branch_release(pf->veb[i]);
10912         }
10913
10914         /* Now we can shutdown the PF's VSI, just before we kill
10915          * adminq and hmc.
10916          */
10917         if (pf->vsi[pf->lan_vsi])
10918                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10919
10920         /* shutdown and destroy the HMC */
10921         if (pf->hw.hmc.hmc_obj) {
10922                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10923                 if (ret_code)
10924                         dev_warn(&pdev->dev,
10925                                  "Failed to destroy the HMC resources: %d\n",
10926                                  ret_code);
10927         }
10928
10929         /* shutdown the adminq */
10930         ret_code = i40e_shutdown_adminq(&pf->hw);
10931         if (ret_code)
10932                 dev_warn(&pdev->dev,
10933                          "Failed to destroy the Admin Queue resources: %d\n",
10934                          ret_code);
10935
10936         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10937         i40e_clear_interrupt_scheme(pf);
10938         for (i = 0; i < pf->num_alloc_vsi; i++) {
10939                 if (pf->vsi[i]) {
10940                         i40e_vsi_clear_rings(pf->vsi[i]);
10941                         i40e_vsi_clear(pf->vsi[i]);
10942                         pf->vsi[i] = NULL;
10943                 }
10944         }
10945
10946         for (i = 0; i < I40E_MAX_VEB; i++) {
10947                 kfree(pf->veb[i]);
10948                 pf->veb[i] = NULL;
10949         }
10950
10951         kfree(pf->qp_pile);
10952         kfree(pf->vsi);
10953
10954         iounmap(pf->hw.hw_addr);
10955         kfree(pf);
10956         pci_release_selected_regions(pdev,
10957                                      pci_select_bars(pdev, IORESOURCE_MEM));
10958
10959         pci_disable_pcie_error_reporting(pdev);
10960         pci_disable_device(pdev);
10961 }
10962
10963 /**
10964  * i40e_pci_error_detected - warning that something funky happened in PCI land
10965  * @pdev: PCI device information struct
10966  *
10967  * Called to warn that something happened and the error handling steps
10968  * are in progress.  Allows the driver to quiesce things, be ready for
10969  * remediation.
10970  **/
10971 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10972                                                 enum pci_channel_state error)
10973 {
10974         struct i40e_pf *pf = pci_get_drvdata(pdev);
10975
10976         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10977
10978         /* shutdown all operations */
10979         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10980                 rtnl_lock();
10981                 i40e_prep_for_reset(pf);
10982                 rtnl_unlock();
10983         }
10984
10985         /* Request a slot reset */
10986         return PCI_ERS_RESULT_NEED_RESET;
10987 }
10988
10989 /**
10990  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10991  * @pdev: PCI device information struct
10992  *
10993  * Called to find if the driver can work with the device now that
10994  * the pci slot has been reset.  If a basic connection seems good
10995  * (registers are readable and have sane content) then return a
10996  * happy little PCI_ERS_RESULT_xxx.
10997  **/
10998 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10999 {
11000         struct i40e_pf *pf = pci_get_drvdata(pdev);
11001         pci_ers_result_t result;
11002         int err;
11003         u32 reg;
11004
11005         dev_dbg(&pdev->dev, "%s\n", __func__);
11006         if (pci_enable_device_mem(pdev)) {
11007                 dev_info(&pdev->dev,
11008                          "Cannot re-enable PCI device after reset.\n");
11009                 result = PCI_ERS_RESULT_DISCONNECT;
11010         } else {
11011                 pci_set_master(pdev);
11012                 pci_restore_state(pdev);
11013                 pci_save_state(pdev);
11014                 pci_wake_from_d3(pdev, false);
11015
11016                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11017                 if (reg == 0)
11018                         result = PCI_ERS_RESULT_RECOVERED;
11019                 else
11020                         result = PCI_ERS_RESULT_DISCONNECT;
11021         }
11022
11023         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11024         if (err) {
11025                 dev_info(&pdev->dev,
11026                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11027                          err);
11028                 /* non-fatal, continue */
11029         }
11030
11031         return result;
11032 }
11033
11034 /**
11035  * i40e_pci_error_resume - restart operations after PCI error recovery
11036  * @pdev: PCI device information struct
11037  *
11038  * Called to allow the driver to bring things back up after PCI error
11039  * and/or reset recovery has finished.
11040  **/
11041 static void i40e_pci_error_resume(struct pci_dev *pdev)
11042 {
11043         struct i40e_pf *pf = pci_get_drvdata(pdev);
11044
11045         dev_dbg(&pdev->dev, "%s\n", __func__);
11046         if (test_bit(__I40E_SUSPENDED, &pf->state))
11047                 return;
11048
11049         rtnl_lock();
11050         i40e_handle_reset_warning(pf);
11051         rtnl_unlock();
11052 }
11053
11054 /**
11055  * i40e_shutdown - PCI callback for shutting down
11056  * @pdev: PCI device information struct
11057  **/
11058 static void i40e_shutdown(struct pci_dev *pdev)
11059 {
11060         struct i40e_pf *pf = pci_get_drvdata(pdev);
11061         struct i40e_hw *hw = &pf->hw;
11062
11063         set_bit(__I40E_SUSPENDED, &pf->state);
11064         set_bit(__I40E_DOWN, &pf->state);
11065         rtnl_lock();
11066         i40e_prep_for_reset(pf);
11067         rtnl_unlock();
11068
11069         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11070         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11071
11072         del_timer_sync(&pf->service_timer);
11073         cancel_work_sync(&pf->service_task);
11074         i40e_fdir_teardown(pf);
11075
11076         rtnl_lock();
11077         i40e_prep_for_reset(pf);
11078         rtnl_unlock();
11079
11080         wr32(hw, I40E_PFPM_APM,
11081              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11082         wr32(hw, I40E_PFPM_WUFC,
11083              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11084
11085         i40e_clear_interrupt_scheme(pf);
11086
11087         if (system_state == SYSTEM_POWER_OFF) {
11088                 pci_wake_from_d3(pdev, pf->wol_en);
11089                 pci_set_power_state(pdev, PCI_D3hot);
11090         }
11091 }
11092
11093 #ifdef CONFIG_PM
11094 /**
11095  * i40e_suspend - PCI callback for moving to D3
11096  * @pdev: PCI device information struct
11097  **/
11098 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11099 {
11100         struct i40e_pf *pf = pci_get_drvdata(pdev);
11101         struct i40e_hw *hw = &pf->hw;
11102
11103         set_bit(__I40E_SUSPENDED, &pf->state);
11104         set_bit(__I40E_DOWN, &pf->state);
11105
11106         rtnl_lock();
11107         i40e_prep_for_reset(pf);
11108         rtnl_unlock();
11109
11110         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11111         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11112
11113         pci_wake_from_d3(pdev, pf->wol_en);
11114         pci_set_power_state(pdev, PCI_D3hot);
11115
11116         return 0;
11117 }
11118
11119 /**
11120  * i40e_resume - PCI callback for waking up from D3
11121  * @pdev: PCI device information struct
11122  **/
11123 static int i40e_resume(struct pci_dev *pdev)
11124 {
11125         struct i40e_pf *pf = pci_get_drvdata(pdev);
11126         u32 err;
11127
11128         pci_set_power_state(pdev, PCI_D0);
11129         pci_restore_state(pdev);
11130         /* pci_restore_state() clears dev->state_saves, so
11131          * call pci_save_state() again to restore it.
11132          */
11133         pci_save_state(pdev);
11134
11135         err = pci_enable_device_mem(pdev);
11136         if (err) {
11137                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11138                 return err;
11139         }
11140         pci_set_master(pdev);
11141
11142         /* no wakeup events while running */
11143         pci_wake_from_d3(pdev, false);
11144
11145         /* handling the reset will rebuild the device state */
11146         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11147                 clear_bit(__I40E_DOWN, &pf->state);
11148                 rtnl_lock();
11149                 i40e_reset_and_rebuild(pf, false);
11150                 rtnl_unlock();
11151         }
11152
11153         return 0;
11154 }
11155
11156 #endif
11157 static const struct pci_error_handlers i40e_err_handler = {
11158         .error_detected = i40e_pci_error_detected,
11159         .slot_reset = i40e_pci_error_slot_reset,
11160         .resume = i40e_pci_error_resume,
11161 };
11162
11163 static struct pci_driver i40e_driver = {
11164         .name     = i40e_driver_name,
11165         .id_table = i40e_pci_tbl,
11166         .probe    = i40e_probe,
11167         .remove   = i40e_remove,
11168 #ifdef CONFIG_PM
11169         .suspend  = i40e_suspend,
11170         .resume   = i40e_resume,
11171 #endif
11172         .shutdown = i40e_shutdown,
11173         .err_handler = &i40e_err_handler,
11174         .sriov_configure = i40e_pci_sriov_configure,
11175 };
11176
11177 /**
11178  * i40e_init_module - Driver registration routine
11179  *
11180  * i40e_init_module is the first routine called when the driver is
11181  * loaded. All it does is register with the PCI subsystem.
11182  **/
11183 static int __init i40e_init_module(void)
11184 {
11185         pr_info("%s: %s - version %s\n", i40e_driver_name,
11186                 i40e_driver_string, i40e_driver_version_str);
11187         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11188
11189         i40e_dbg_init();
11190         return pci_register_driver(&i40e_driver);
11191 }
11192 module_init(i40e_init_module);
11193
11194 /**
11195  * i40e_exit_module - Driver exit cleanup routine
11196  *
11197  * i40e_exit_module is called just before the driver is removed
11198  * from memory.
11199  **/
11200 static void __exit i40e_exit_module(void)
11201 {
11202         pci_unregister_driver(&i40e_driver);
11203         i40e_dbg_exit();
11204 }
11205 module_exit(i40e_exit_module);